Mercurial > hg > truffle
annotate src/share/vm/runtime/arguments.cpp @ 8600:c423a5fd8ac7
Cull frame states before lowering.
author | Roland Schatz <roland.schatz@oracle.com> |
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date | Tue, 02 Apr 2013 11:47:56 +0200 |
parents | c92949b1ec8a |
children | b9a918201d47 |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #include "precompiled.hpp" |
26 #include "classfile/javaAssertions.hpp" | |
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27 #include "classfile/symbolTable.hpp" |
1972 | 28 #include "compiler/compilerOracle.hpp" |
29 #include "memory/allocation.inline.hpp" | |
30 #include "memory/cardTableRS.hpp" | |
31 #include "memory/referenceProcessor.hpp" | |
32 #include "memory/universe.inline.hpp" | |
33 #include "oops/oop.inline.hpp" | |
34 #include "prims/jvmtiExport.hpp" | |
35 #include "runtime/arguments.hpp" | |
36 #include "runtime/globals_extension.hpp" | |
37 #include "runtime/java.hpp" | |
38 #include "services/management.hpp" | |
6197 | 39 #include "services/memTracker.hpp" |
1972 | 40 #include "utilities/defaultStream.hpp" |
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41 #include "utilities/macros.hpp" |
1972 | 42 #include "utilities/taskqueue.hpp" |
43 #ifdef TARGET_OS_FAMILY_linux | |
44 # include "os_linux.inline.hpp" | |
45 #endif | |
46 #ifdef TARGET_OS_FAMILY_solaris | |
47 # include "os_solaris.inline.hpp" | |
48 #endif | |
49 #ifdef TARGET_OS_FAMILY_windows | |
50 # include "os_windows.inline.hpp" | |
51 #endif | |
3960 | 52 #ifdef TARGET_OS_FAMILY_bsd |
53 # include "os_bsd.inline.hpp" | |
54 #endif | |
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55 #if INCLUDE_ALL_GCS |
1972 | 56 #include "gc_implementation/concurrentMarkSweep/compactibleFreeListSpace.hpp" |
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57 #endif // INCLUDE_ALL_GCS |
0 | 58 |
2474 | 59 // Note: This is a special bug reporting site for the JVM |
60 #define DEFAULT_VENDOR_URL_BUG "http://bugreport.sun.com/bugreport/crash.jsp" | |
0 | 61 #define DEFAULT_JAVA_LAUNCHER "generic" |
62 | |
63 char** Arguments::_jvm_flags_array = NULL; | |
64 int Arguments::_num_jvm_flags = 0; | |
65 char** Arguments::_jvm_args_array = NULL; | |
66 int Arguments::_num_jvm_args = 0; | |
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67 #ifdef GRAAL |
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68 char** Arguments::_graal_args_array = NULL; |
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69 int Arguments::_num_graal_args = 0; |
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70 #endif |
0 | 71 char* Arguments::_java_command = NULL; |
72 SystemProperty* Arguments::_system_properties = NULL; | |
73 const char* Arguments::_gc_log_filename = NULL; | |
74 bool Arguments::_has_profile = false; | |
75 bool Arguments::_has_alloc_profile = false; | |
76 uintx Arguments::_min_heap_size = 0; | |
77 Arguments::Mode Arguments::_mode = _mixed; | |
78 bool Arguments::_java_compiler = false; | |
79 bool Arguments::_xdebug_mode = false; | |
80 const char* Arguments::_java_vendor_url_bug = DEFAULT_VENDOR_URL_BUG; | |
81 const char* Arguments::_sun_java_launcher = DEFAULT_JAVA_LAUNCHER; | |
82 int Arguments::_sun_java_launcher_pid = -1; | |
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83 bool Arguments::_created_by_gamma_launcher = false; |
0 | 84 |
85 // These parameters are reset in method parse_vm_init_args(JavaVMInitArgs*) | |
86 bool Arguments::_AlwaysCompileLoopMethods = AlwaysCompileLoopMethods; | |
87 bool Arguments::_UseOnStackReplacement = UseOnStackReplacement; | |
88 bool Arguments::_BackgroundCompilation = BackgroundCompilation; | |
89 bool Arguments::_ClipInlining = ClipInlining; | |
90 | |
91 char* Arguments::SharedArchivePath = NULL; | |
92 | |
93 AgentLibraryList Arguments::_libraryList; | |
94 AgentLibraryList Arguments::_agentList; | |
95 | |
96 abort_hook_t Arguments::_abort_hook = NULL; | |
97 exit_hook_t Arguments::_exit_hook = NULL; | |
98 vfprintf_hook_t Arguments::_vfprintf_hook = NULL; | |
99 | |
100 | |
101 SystemProperty *Arguments::_java_ext_dirs = NULL; | |
102 SystemProperty *Arguments::_java_endorsed_dirs = NULL; | |
103 SystemProperty *Arguments::_sun_boot_library_path = NULL; | |
104 SystemProperty *Arguments::_java_library_path = NULL; | |
105 SystemProperty *Arguments::_java_home = NULL; | |
106 SystemProperty *Arguments::_java_class_path = NULL; | |
107 SystemProperty *Arguments::_sun_boot_class_path = NULL; | |
108 | |
109 char* Arguments::_meta_index_path = NULL; | |
110 char* Arguments::_meta_index_dir = NULL; | |
111 | |
112 // Check if head of 'option' matches 'name', and sets 'tail' remaining part of option string | |
113 | |
114 static bool match_option(const JavaVMOption *option, const char* name, | |
115 const char** tail) { | |
116 int len = (int)strlen(name); | |
117 if (strncmp(option->optionString, name, len) == 0) { | |
118 *tail = option->optionString + len; | |
119 return true; | |
120 } else { | |
121 return false; | |
122 } | |
123 } | |
124 | |
125 static void logOption(const char* opt) { | |
126 if (PrintVMOptions) { | |
127 jio_fprintf(defaultStream::output_stream(), "VM option '%s'\n", opt); | |
128 } | |
129 } | |
130 | |
131 // Process java launcher properties. | |
132 void Arguments::process_sun_java_launcher_properties(JavaVMInitArgs* args) { | |
133 // See if sun.java.launcher or sun.java.launcher.pid is defined. | |
134 // Must do this before setting up other system properties, | |
135 // as some of them may depend on launcher type. | |
136 for (int index = 0; index < args->nOptions; index++) { | |
137 const JavaVMOption* option = args->options + index; | |
138 const char* tail; | |
139 | |
140 if (match_option(option, "-Dsun.java.launcher=", &tail)) { | |
141 process_java_launcher_argument(tail, option->extraInfo); | |
142 continue; | |
143 } | |
144 if (match_option(option, "-Dsun.java.launcher.pid=", &tail)) { | |
145 _sun_java_launcher_pid = atoi(tail); | |
146 continue; | |
147 } | |
148 } | |
149 } | |
150 | |
151 // Initialize system properties key and value. | |
152 void Arguments::init_system_properties() { | |
153 | |
154 PropertyList_add(&_system_properties, new SystemProperty("java.vm.specification.name", | |
155 "Java Virtual Machine Specification", false)); | |
156 PropertyList_add(&_system_properties, new SystemProperty("java.vm.version", VM_Version::vm_release(), false)); | |
157 PropertyList_add(&_system_properties, new SystemProperty("java.vm.name", VM_Version::vm_name(), false)); | |
158 PropertyList_add(&_system_properties, new SystemProperty("java.vm.info", VM_Version::vm_info_string(), true)); | |
159 | |
160 // following are JVMTI agent writeable properties. | |
161 // Properties values are set to NULL and they are | |
162 // os specific they are initialized in os::init_system_properties_values(). | |
163 _java_ext_dirs = new SystemProperty("java.ext.dirs", NULL, true); | |
164 _java_endorsed_dirs = new SystemProperty("java.endorsed.dirs", NULL, true); | |
165 _sun_boot_library_path = new SystemProperty("sun.boot.library.path", NULL, true); | |
166 _java_library_path = new SystemProperty("java.library.path", NULL, true); | |
167 _java_home = new SystemProperty("java.home", NULL, true); | |
168 _sun_boot_class_path = new SystemProperty("sun.boot.class.path", NULL, true); | |
169 | |
170 _java_class_path = new SystemProperty("java.class.path", "", true); | |
171 | |
172 // Add to System Property list. | |
173 PropertyList_add(&_system_properties, _java_ext_dirs); | |
174 PropertyList_add(&_system_properties, _java_endorsed_dirs); | |
175 PropertyList_add(&_system_properties, _sun_boot_library_path); | |
176 PropertyList_add(&_system_properties, _java_library_path); | |
177 PropertyList_add(&_system_properties, _java_home); | |
178 PropertyList_add(&_system_properties, _java_class_path); | |
179 PropertyList_add(&_system_properties, _sun_boot_class_path); | |
180 | |
181 // Set OS specific system properties values | |
182 os::init_system_properties_values(); | |
183 } | |
184 | |
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185 |
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186 // Update/Initialize System properties after JDK version number is known |
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187 void Arguments::init_version_specific_system_properties() { |
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188 enum { bufsz = 16 }; |
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189 char buffer[bufsz]; |
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190 const char* spec_vendor = "Sun Microsystems Inc."; |
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191 uint32_t spec_version = 0; |
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192 |
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193 if (JDK_Version::is_gte_jdk17x_version()) { |
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194 spec_vendor = "Oracle Corporation"; |
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195 spec_version = JDK_Version::current().major_version(); |
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196 } |
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197 jio_snprintf(buffer, bufsz, "1." UINT32_FORMAT, spec_version); |
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198 |
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199 PropertyList_add(&_system_properties, |
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200 new SystemProperty("java.vm.specification.vendor", spec_vendor, false)); |
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201 PropertyList_add(&_system_properties, |
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202 new SystemProperty("java.vm.specification.version", buffer, false)); |
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203 PropertyList_add(&_system_properties, |
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204 new SystemProperty("java.vm.vendor", VM_Version::vm_vendor(), false)); |
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205 } |
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206 |
242 | 207 /** |
208 * Provide a slightly more user-friendly way of eliminating -XX flags. | |
209 * When a flag is eliminated, it can be added to this list in order to | |
210 * continue accepting this flag on the command-line, while issuing a warning | |
211 * and ignoring the value. Once the JDK version reaches the 'accept_until' | |
212 * limit, we flatly refuse to admit the existence of the flag. This allows | |
213 * a flag to die correctly over JDK releases using HSX. | |
214 */ | |
215 typedef struct { | |
216 const char* name; | |
217 JDK_Version obsoleted_in; // when the flag went away | |
218 JDK_Version accept_until; // which version to start denying the existence | |
219 } ObsoleteFlag; | |
0 | 220 |
242 | 221 static ObsoleteFlag obsolete_jvm_flags[] = { |
222 { "UseTrainGC", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
223 { "UseSpecialLargeObjectHandling", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
224 { "UseOversizedCarHandling", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
225 { "TraceCarAllocation", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
226 { "PrintTrainGCProcessingStats", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
227 { "LogOfCarSpaceSize", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
228 { "OversizedCarThreshold", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
229 { "MinTickInterval", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
230 { "DefaultTickInterval", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
231 { "MaxTickInterval", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
232 { "DelayTickAdjustment", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
233 { "ProcessingToTenuringRatio", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
234 { "MinTrainLength", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
235 { "AppendRatio", JDK_Version::jdk_update(6,10), JDK_Version::jdk(7) }, | |
1064 | 236 { "DefaultMaxRAM", JDK_Version::jdk_update(6,18), JDK_Version::jdk(7) }, |
237 { "DefaultInitialRAMFraction", | |
238 JDK_Version::jdk_update(6,18), JDK_Version::jdk(7) }, | |
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239 { "UseDepthFirstScavengeOrder", |
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240 JDK_Version::jdk_update(6,22), JDK_Version::jdk(7) }, |
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241 { "HandlePromotionFailure", |
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242 JDK_Version::jdk_update(6,24), JDK_Version::jdk(8) }, |
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243 { "MaxLiveObjectEvacuationRatio", |
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244 JDK_Version::jdk_update(6,24), JDK_Version::jdk(8) }, |
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245 { "ForceSharedSpaces", JDK_Version::jdk_update(6,25), JDK_Version::jdk(8) }, |
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246 { "UseParallelOldGCCompacting", |
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247 JDK_Version::jdk_update(6,27), JDK_Version::jdk(8) }, |
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248 { "UseParallelDensePrefixUpdate", |
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249 JDK_Version::jdk_update(6,27), JDK_Version::jdk(8) }, |
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250 { "UseParallelOldGCDensePrefix", |
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251 JDK_Version::jdk_update(6,27), JDK_Version::jdk(8) }, |
2460 | 252 { "AllowTransitionalJSR292", JDK_Version::jdk(7), JDK_Version::jdk(8) }, |
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253 { "UseCompressedStrings", JDK_Version::jdk(7), JDK_Version::jdk(8) }, |
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254 { "CMSPermGenPrecleaningEnabled", JDK_Version::jdk(8), JDK_Version::jdk(9) }, |
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255 { "CMSTriggerPermRatio", JDK_Version::jdk(8), JDK_Version::jdk(9) }, |
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256 { "CMSInitiatingPermOccupancyFraction", JDK_Version::jdk(8), JDK_Version::jdk(9) }, |
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257 { "AdaptivePermSizeWeight", JDK_Version::jdk(8), JDK_Version::jdk(9) }, |
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258 { "PermGenPadding", JDK_Version::jdk(8), JDK_Version::jdk(9) }, |
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259 { "PermMarkSweepDeadRatio", JDK_Version::jdk(8), JDK_Version::jdk(9) }, |
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260 { "PermSize", JDK_Version::jdk(8), JDK_Version::jdk(9) }, |
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261 { "MaxPermSize", JDK_Version::jdk(8), JDK_Version::jdk(9) }, |
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262 { "MinPermHeapExpansion", JDK_Version::jdk(8), JDK_Version::jdk(9) }, |
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263 { "MaxPermHeapExpansion", JDK_Version::jdk(8), JDK_Version::jdk(9) }, |
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264 { "CMSRevisitStackSize", JDK_Version::jdk(8), JDK_Version::jdk(9) }, |
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265 { "PrintRevisitStats", JDK_Version::jdk(8), JDK_Version::jdk(9) }, |
6916 | 266 { "UseVectoredExceptions", JDK_Version::jdk(8), JDK_Version::jdk(9) }, |
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267 #ifdef PRODUCT |
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268 { "DesiredMethodLimit", |
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269 JDK_Version::jdk_update(7, 2), JDK_Version::jdk(8) }, |
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270 #endif // PRODUCT |
242 | 271 { NULL, JDK_Version(0), JDK_Version(0) } |
272 }; | |
273 | |
274 // Returns true if the flag is obsolete and fits into the range specified | |
275 // for being ignored. In the case that the flag is ignored, the 'version' | |
276 // value is filled in with the version number when the flag became | |
277 // obsolete so that that value can be displayed to the user. | |
278 bool Arguments::is_newly_obsolete(const char *s, JDK_Version* version) { | |
0 | 279 int i = 0; |
242 | 280 assert(version != NULL, "Must provide a version buffer"); |
281 while (obsolete_jvm_flags[i].name != NULL) { | |
282 const ObsoleteFlag& flag_status = obsolete_jvm_flags[i]; | |
0 | 283 // <flag>=xxx form |
284 // [-|+]<flag> form | |
242 | 285 if ((strncmp(flag_status.name, s, strlen(flag_status.name)) == 0) || |
0 | 286 ((s[0] == '+' || s[0] == '-') && |
242 | 287 (strncmp(flag_status.name, &s[1], strlen(flag_status.name)) == 0))) { |
288 if (JDK_Version::current().compare(flag_status.accept_until) == -1) { | |
289 *version = flag_status.obsoleted_in; | |
290 return true; | |
291 } | |
0 | 292 } |
293 i++; | |
294 } | |
295 return false; | |
296 } | |
297 | |
298 // Constructs the system class path (aka boot class path) from the following | |
299 // components, in order: | |
300 // | |
301 // prefix // from -Xbootclasspath/p:... | |
302 // endorsed // the expansion of -Djava.endorsed.dirs=... | |
303 // base // from os::get_system_properties() or -Xbootclasspath= | |
304 // suffix // from -Xbootclasspath/a:... | |
305 // | |
306 // java.endorsed.dirs is a list of directories; any jar or zip files in the | |
307 // directories are added to the sysclasspath just before the base. | |
308 // | |
309 // This could be AllStatic, but it isn't needed after argument processing is | |
310 // complete. | |
311 class SysClassPath: public StackObj { | |
312 public: | |
313 SysClassPath(const char* base); | |
314 ~SysClassPath(); | |
315 | |
316 inline void set_base(const char* base); | |
317 inline void add_prefix(const char* prefix); | |
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318 inline void add_suffix_to_prefix(const char* suffix); |
0 | 319 inline void add_suffix(const char* suffix); |
320 inline void reset_path(const char* base); | |
321 | |
322 // Expand the jar/zip files in each directory listed by the java.endorsed.dirs | |
323 // property. Must be called after all command-line arguments have been | |
324 // processed (in particular, -Djava.endorsed.dirs=...) and before calling | |
325 // combined_path(). | |
326 void expand_endorsed(); | |
327 | |
328 inline const char* get_base() const { return _items[_scp_base]; } | |
329 inline const char* get_prefix() const { return _items[_scp_prefix]; } | |
330 inline const char* get_suffix() const { return _items[_scp_suffix]; } | |
331 inline const char* get_endorsed() const { return _items[_scp_endorsed]; } | |
332 | |
333 // Combine all the components into a single c-heap-allocated string; caller | |
334 // must free the string if/when no longer needed. | |
335 char* combined_path(); | |
336 | |
337 private: | |
338 // Utility routines. | |
339 static char* add_to_path(const char* path, const char* str, bool prepend); | |
340 static char* add_jars_to_path(char* path, const char* directory); | |
341 | |
342 inline void reset_item_at(int index); | |
343 | |
344 // Array indices for the items that make up the sysclasspath. All except the | |
345 // base are allocated in the C heap and freed by this class. | |
346 enum { | |
347 _scp_prefix, // from -Xbootclasspath/p:... | |
348 _scp_endorsed, // the expansion of -Djava.endorsed.dirs=... | |
349 _scp_base, // the default sysclasspath | |
350 _scp_suffix, // from -Xbootclasspath/a:... | |
351 _scp_nitems // the number of items, must be last. | |
352 }; | |
353 | |
354 const char* _items[_scp_nitems]; | |
355 DEBUG_ONLY(bool _expansion_done;) | |
356 }; | |
357 | |
358 SysClassPath::SysClassPath(const char* base) { | |
359 memset(_items, 0, sizeof(_items)); | |
360 _items[_scp_base] = base; | |
361 DEBUG_ONLY(_expansion_done = false;) | |
362 } | |
363 | |
364 SysClassPath::~SysClassPath() { | |
365 // Free everything except the base. | |
366 for (int i = 0; i < _scp_nitems; ++i) { | |
367 if (i != _scp_base) reset_item_at(i); | |
368 } | |
369 DEBUG_ONLY(_expansion_done = false;) | |
370 } | |
371 | |
372 inline void SysClassPath::set_base(const char* base) { | |
373 _items[_scp_base] = base; | |
374 } | |
375 | |
376 inline void SysClassPath::add_prefix(const char* prefix) { | |
377 _items[_scp_prefix] = add_to_path(_items[_scp_prefix], prefix, true); | |
378 } | |
379 | |
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380 inline void SysClassPath::add_suffix_to_prefix(const char* suffix) { |
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381 _items[_scp_prefix] = add_to_path(_items[_scp_prefix], suffix, false); |
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382 } |
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383 |
0 | 384 inline void SysClassPath::add_suffix(const char* suffix) { |
385 _items[_scp_suffix] = add_to_path(_items[_scp_suffix], suffix, false); | |
386 } | |
387 | |
388 inline void SysClassPath::reset_item_at(int index) { | |
389 assert(index < _scp_nitems && index != _scp_base, "just checking"); | |
390 if (_items[index] != NULL) { | |
6197 | 391 FREE_C_HEAP_ARRAY(char, _items[index], mtInternal); |
0 | 392 _items[index] = NULL; |
393 } | |
394 } | |
395 | |
396 inline void SysClassPath::reset_path(const char* base) { | |
397 // Clear the prefix and suffix. | |
398 reset_item_at(_scp_prefix); | |
399 reset_item_at(_scp_suffix); | |
400 set_base(base); | |
401 } | |
402 | |
403 //------------------------------------------------------------------------------ | |
404 | |
405 void SysClassPath::expand_endorsed() { | |
406 assert(_items[_scp_endorsed] == NULL, "can only be called once."); | |
407 | |
408 const char* path = Arguments::get_property("java.endorsed.dirs"); | |
409 if (path == NULL) { | |
410 path = Arguments::get_endorsed_dir(); | |
411 assert(path != NULL, "no default for java.endorsed.dirs"); | |
412 } | |
413 | |
414 char* expanded_path = NULL; | |
415 const char separator = *os::path_separator(); | |
416 const char* const end = path + strlen(path); | |
417 while (path < end) { | |
418 const char* tmp_end = strchr(path, separator); | |
419 if (tmp_end == NULL) { | |
420 expanded_path = add_jars_to_path(expanded_path, path); | |
421 path = end; | |
422 } else { | |
6197 | 423 char* dirpath = NEW_C_HEAP_ARRAY(char, tmp_end - path + 1, mtInternal); |
0 | 424 memcpy(dirpath, path, tmp_end - path); |
425 dirpath[tmp_end - path] = '\0'; | |
426 expanded_path = add_jars_to_path(expanded_path, dirpath); | |
6197 | 427 FREE_C_HEAP_ARRAY(char, dirpath, mtInternal); |
0 | 428 path = tmp_end + 1; |
429 } | |
430 } | |
431 _items[_scp_endorsed] = expanded_path; | |
432 DEBUG_ONLY(_expansion_done = true;) | |
433 } | |
434 | |
435 // Combine the bootclasspath elements, some of which may be null, into a single | |
436 // c-heap-allocated string. | |
437 char* SysClassPath::combined_path() { | |
438 assert(_items[_scp_base] != NULL, "empty default sysclasspath"); | |
439 assert(_expansion_done, "must call expand_endorsed() first."); | |
440 | |
441 size_t lengths[_scp_nitems]; | |
442 size_t total_len = 0; | |
443 | |
444 const char separator = *os::path_separator(); | |
445 | |
446 // Get the lengths. | |
447 int i; | |
448 for (i = 0; i < _scp_nitems; ++i) { | |
449 if (_items[i] != NULL) { | |
450 lengths[i] = strlen(_items[i]); | |
451 // Include space for the separator char (or a NULL for the last item). | |
452 total_len += lengths[i] + 1; | |
453 } | |
454 } | |
455 assert(total_len > 0, "empty sysclasspath not allowed"); | |
456 | |
457 // Copy the _items to a single string. | |
6197 | 458 char* cp = NEW_C_HEAP_ARRAY(char, total_len, mtInternal); |
0 | 459 char* cp_tmp = cp; |
460 for (i = 0; i < _scp_nitems; ++i) { | |
461 if (_items[i] != NULL) { | |
462 memcpy(cp_tmp, _items[i], lengths[i]); | |
463 cp_tmp += lengths[i]; | |
464 *cp_tmp++ = separator; | |
465 } | |
466 } | |
467 *--cp_tmp = '\0'; // Replace the extra separator. | |
468 return cp; | |
469 } | |
470 | |
471 // Note: path must be c-heap-allocated (or NULL); it is freed if non-null. | |
472 char* | |
473 SysClassPath::add_to_path(const char* path, const char* str, bool prepend) { | |
474 char *cp; | |
475 | |
476 assert(str != NULL, "just checking"); | |
477 if (path == NULL) { | |
478 size_t len = strlen(str) + 1; | |
6197 | 479 cp = NEW_C_HEAP_ARRAY(char, len, mtInternal); |
0 | 480 memcpy(cp, str, len); // copy the trailing null |
481 } else { | |
482 const char separator = *os::path_separator(); | |
483 size_t old_len = strlen(path); | |
484 size_t str_len = strlen(str); | |
485 size_t len = old_len + str_len + 2; | |
486 | |
487 if (prepend) { | |
6197 | 488 cp = NEW_C_HEAP_ARRAY(char, len, mtInternal); |
0 | 489 char* cp_tmp = cp; |
490 memcpy(cp_tmp, str, str_len); | |
491 cp_tmp += str_len; | |
492 *cp_tmp = separator; | |
493 memcpy(++cp_tmp, path, old_len + 1); // copy the trailing null | |
6197 | 494 FREE_C_HEAP_ARRAY(char, path, mtInternal); |
0 | 495 } else { |
6197 | 496 cp = REALLOC_C_HEAP_ARRAY(char, path, len, mtInternal); |
0 | 497 char* cp_tmp = cp + old_len; |
498 *cp_tmp = separator; | |
499 memcpy(++cp_tmp, str, str_len + 1); // copy the trailing null | |
500 } | |
501 } | |
502 return cp; | |
503 } | |
504 | |
505 // Scan the directory and append any jar or zip files found to path. | |
506 // Note: path must be c-heap-allocated (or NULL); it is freed if non-null. | |
507 char* SysClassPath::add_jars_to_path(char* path, const char* directory) { | |
508 DIR* dir = os::opendir(directory); | |
509 if (dir == NULL) return path; | |
510 | |
511 char dir_sep[2] = { '\0', '\0' }; | |
512 size_t directory_len = strlen(directory); | |
513 const char fileSep = *os::file_separator(); | |
514 if (directory[directory_len - 1] != fileSep) dir_sep[0] = fileSep; | |
515 | |
516 /* Scan the directory for jars/zips, appending them to path. */ | |
517 struct dirent *entry; | |
6197 | 518 char *dbuf = NEW_C_HEAP_ARRAY(char, os::readdir_buf_size(directory), mtInternal); |
0 | 519 while ((entry = os::readdir(dir, (dirent *) dbuf)) != NULL) { |
520 const char* name = entry->d_name; | |
521 const char* ext = name + strlen(name) - 4; | |
522 bool isJarOrZip = ext > name && | |
523 (os::file_name_strcmp(ext, ".jar") == 0 || | |
524 os::file_name_strcmp(ext, ".zip") == 0); | |
525 if (isJarOrZip) { | |
6197 | 526 char* jarpath = NEW_C_HEAP_ARRAY(char, directory_len + 2 + strlen(name), mtInternal); |
0 | 527 sprintf(jarpath, "%s%s%s", directory, dir_sep, name); |
528 path = add_to_path(path, jarpath, false); | |
6197 | 529 FREE_C_HEAP_ARRAY(char, jarpath, mtInternal); |
0 | 530 } |
531 } | |
6197 | 532 FREE_C_HEAP_ARRAY(char, dbuf, mtInternal); |
0 | 533 os::closedir(dir); |
534 return path; | |
535 } | |
536 | |
537 // Parses a memory size specification string. | |
489
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538 static bool atomull(const char *s, julong* result) { |
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539 julong n = 0; |
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540 int args_read = sscanf(s, JULONG_FORMAT, &n); |
0 | 541 if (args_read != 1) { |
542 return false; | |
543 } | |
544 while (*s != '\0' && isdigit(*s)) { | |
545 s++; | |
546 } | |
547 // 4705540: illegal if more characters are found after the first non-digit | |
548 if (strlen(s) > 1) { | |
549 return false; | |
550 } | |
551 switch (*s) { | |
552 case 'T': case 't': | |
553 *result = n * G * K; | |
489
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554 // Check for overflow. |
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555 if (*result/((julong)G * K) != n) return false; |
0 | 556 return true; |
557 case 'G': case 'g': | |
558 *result = n * G; | |
489
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559 if (*result/G != n) return false; |
0 | 560 return true; |
561 case 'M': case 'm': | |
562 *result = n * M; | |
489
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563 if (*result/M != n) return false; |
0 | 564 return true; |
565 case 'K': case 'k': | |
566 *result = n * K; | |
489
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567 if (*result/K != n) return false; |
0 | 568 return true; |
569 case '\0': | |
570 *result = n; | |
571 return true; | |
572 default: | |
573 return false; | |
574 } | |
575 } | |
576 | |
489
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577 Arguments::ArgsRange Arguments::check_memory_size(julong size, julong min_size) { |
0 | 578 if (size < min_size) return arg_too_small; |
579 // Check that size will fit in a size_t (only relevant on 32-bit) | |
489
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580 if (size > max_uintx) return arg_too_big; |
0 | 581 return arg_in_range; |
582 } | |
583 | |
584 // Describe an argument out of range error | |
585 void Arguments::describe_range_error(ArgsRange errcode) { | |
586 switch(errcode) { | |
587 case arg_too_big: | |
588 jio_fprintf(defaultStream::error_stream(), | |
589 "The specified size exceeds the maximum " | |
590 "representable size.\n"); | |
591 break; | |
592 case arg_too_small: | |
593 case arg_unreadable: | |
594 case arg_in_range: | |
595 // do nothing for now | |
596 break; | |
597 default: | |
598 ShouldNotReachHere(); | |
599 } | |
600 } | |
601 | |
602 static bool set_bool_flag(char* name, bool value, FlagValueOrigin origin) { | |
603 return CommandLineFlags::boolAtPut(name, &value, origin); | |
604 } | |
605 | |
606 static bool set_fp_numeric_flag(char* name, char* value, FlagValueOrigin origin) { | |
607 double v; | |
608 if (sscanf(value, "%lf", &v) != 1) { | |
609 return false; | |
610 } | |
611 | |
612 if (CommandLineFlags::doubleAtPut(name, &v, origin)) { | |
613 return true; | |
614 } | |
615 return false; | |
616 } | |
617 | |
618 static bool set_numeric_flag(char* name, char* value, FlagValueOrigin origin) { | |
489
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619 julong v; |
0 | 620 intx intx_v; |
621 bool is_neg = false; | |
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622 // Check the sign first since atomull() parses only unsigned values. |
0 | 623 if (*value == '-') { |
624 if (!CommandLineFlags::intxAt(name, &intx_v)) { | |
625 return false; | |
626 } | |
627 value++; | |
628 is_neg = true; | |
629 } | |
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630 if (!atomull(value, &v)) { |
0 | 631 return false; |
632 } | |
633 intx_v = (intx) v; | |
634 if (is_neg) { | |
635 intx_v = -intx_v; | |
636 } | |
637 if (CommandLineFlags::intxAtPut(name, &intx_v, origin)) { | |
638 return true; | |
639 } | |
640 uintx uintx_v = (uintx) v; | |
641 if (!is_neg && CommandLineFlags::uintxAtPut(name, &uintx_v, origin)) { | |
642 return true; | |
643 } | |
1064 | 644 uint64_t uint64_t_v = (uint64_t) v; |
645 if (!is_neg && CommandLineFlags::uint64_tAtPut(name, &uint64_t_v, origin)) { | |
646 return true; | |
647 } | |
0 | 648 return false; |
649 } | |
650 | |
651 static bool set_string_flag(char* name, const char* value, FlagValueOrigin origin) { | |
652 if (!CommandLineFlags::ccstrAtPut(name, &value, origin)) return false; | |
653 // Contract: CommandLineFlags always returns a pointer that needs freeing. | |
6197 | 654 FREE_C_HEAP_ARRAY(char, value, mtInternal); |
0 | 655 return true; |
656 } | |
657 | |
658 static bool append_to_string_flag(char* name, const char* new_value, FlagValueOrigin origin) { | |
659 const char* old_value = ""; | |
660 if (!CommandLineFlags::ccstrAt(name, &old_value)) return false; | |
661 size_t old_len = old_value != NULL ? strlen(old_value) : 0; | |
662 size_t new_len = strlen(new_value); | |
663 const char* value; | |
664 char* free_this_too = NULL; | |
665 if (old_len == 0) { | |
666 value = new_value; | |
667 } else if (new_len == 0) { | |
668 value = old_value; | |
669 } else { | |
6197 | 670 char* buf = NEW_C_HEAP_ARRAY(char, old_len + 1 + new_len + 1, mtInternal); |
0 | 671 // each new setting adds another LINE to the switch: |
672 sprintf(buf, "%s\n%s", old_value, new_value); | |
673 value = buf; | |
674 free_this_too = buf; | |
675 } | |
676 (void) CommandLineFlags::ccstrAtPut(name, &value, origin); | |
677 // CommandLineFlags always returns a pointer that needs freeing. | |
6197 | 678 FREE_C_HEAP_ARRAY(char, value, mtInternal); |
0 | 679 if (free_this_too != NULL) { |
680 // CommandLineFlags made its own copy, so I must delete my own temp. buffer. | |
6197 | 681 FREE_C_HEAP_ARRAY(char, free_this_too, mtInternal); |
0 | 682 } |
683 return true; | |
684 } | |
685 | |
686 bool Arguments::parse_argument(const char* arg, FlagValueOrigin origin) { | |
687 | |
688 // range of acceptable characters spelled out for portability reasons | |
689 #define NAME_RANGE "[abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789_]" | |
690 #define BUFLEN 255 | |
691 char name[BUFLEN+1]; | |
692 char dummy; | |
693 | |
694 if (sscanf(arg, "-%" XSTR(BUFLEN) NAME_RANGE "%c", name, &dummy) == 1) { | |
695 return set_bool_flag(name, false, origin); | |
696 } | |
697 if (sscanf(arg, "+%" XSTR(BUFLEN) NAME_RANGE "%c", name, &dummy) == 1) { | |
698 return set_bool_flag(name, true, origin); | |
699 } | |
700 | |
701 char punct; | |
702 if (sscanf(arg, "%" XSTR(BUFLEN) NAME_RANGE "%c", name, &punct) == 2 && punct == '=') { | |
703 const char* value = strchr(arg, '=') + 1; | |
704 Flag* flag = Flag::find_flag(name, strlen(name)); | |
705 if (flag != NULL && flag->is_ccstr()) { | |
706 if (flag->ccstr_accumulates()) { | |
707 return append_to_string_flag(name, value, origin); | |
708 } else { | |
709 if (value[0] == '\0') { | |
710 value = NULL; | |
711 } | |
712 return set_string_flag(name, value, origin); | |
713 } | |
714 } | |
715 } | |
716 | |
717 if (sscanf(arg, "%" XSTR(BUFLEN) NAME_RANGE ":%c", name, &punct) == 2 && punct == '=') { | |
718 const char* value = strchr(arg, '=') + 1; | |
719 // -XX:Foo:=xxx will reset the string flag to the given value. | |
720 if (value[0] == '\0') { | |
721 value = NULL; | |
722 } | |
723 return set_string_flag(name, value, origin); | |
724 } | |
725 | |
726 #define SIGNED_FP_NUMBER_RANGE "[-0123456789.]" | |
727 #define SIGNED_NUMBER_RANGE "[-0123456789]" | |
728 #define NUMBER_RANGE "[0123456789]" | |
729 char value[BUFLEN + 1]; | |
730 char value2[BUFLEN + 1]; | |
731 if (sscanf(arg, "%" XSTR(BUFLEN) NAME_RANGE "=" "%" XSTR(BUFLEN) SIGNED_NUMBER_RANGE "." "%" XSTR(BUFLEN) NUMBER_RANGE "%c", name, value, value2, &dummy) == 3) { | |
732 // Looks like a floating-point number -- try again with more lenient format string | |
733 if (sscanf(arg, "%" XSTR(BUFLEN) NAME_RANGE "=" "%" XSTR(BUFLEN) SIGNED_FP_NUMBER_RANGE "%c", name, value, &dummy) == 2) { | |
734 return set_fp_numeric_flag(name, value, origin); | |
735 } | |
736 } | |
737 | |
738 #define VALUE_RANGE "[-kmgtKMGT0123456789]" | |
739 if (sscanf(arg, "%" XSTR(BUFLEN) NAME_RANGE "=" "%" XSTR(BUFLEN) VALUE_RANGE "%c", name, value, &dummy) == 2) { | |
740 return set_numeric_flag(name, value, origin); | |
741 } | |
742 | |
743 return false; | |
744 } | |
745 | |
746 void Arguments::add_string(char*** bldarray, int* count, const char* arg) { | |
747 assert(bldarray != NULL, "illegal argument"); | |
748 | |
749 if (arg == NULL) { | |
750 return; | |
751 } | |
752 | |
753 int index = *count; | |
754 | |
755 // expand the array and add arg to the last element | |
756 (*count)++; | |
757 if (*bldarray == NULL) { | |
6197 | 758 *bldarray = NEW_C_HEAP_ARRAY(char*, *count, mtInternal); |
0 | 759 } else { |
6197 | 760 *bldarray = REALLOC_C_HEAP_ARRAY(char*, *bldarray, *count, mtInternal); |
0 | 761 } |
762 (*bldarray)[index] = strdup(arg); | |
763 } | |
764 | |
765 void Arguments::build_jvm_args(const char* arg) { | |
766 add_string(&_jvm_args_array, &_num_jvm_args, arg); | |
767 } | |
768 | |
769 void Arguments::build_jvm_flags(const char* arg) { | |
770 add_string(&_jvm_flags_array, &_num_jvm_flags, arg); | |
771 } | |
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772 #ifdef GRAAL |
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773 void Arguments::add_graal_arg(const char* arg) { |
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774 add_string(&_graal_args_array, &_num_graal_args, arg); |
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775 } |
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776 #endif |
0 | 777 |
778 // utility function to return a string that concatenates all | |
779 // strings in a given char** array | |
780 const char* Arguments::build_resource_string(char** args, int count) { | |
781 if (args == NULL || count == 0) { | |
782 return NULL; | |
783 } | |
784 size_t length = strlen(args[0]) + 1; // add 1 for the null terminator | |
785 for (int i = 1; i < count; i++) { | |
786 length += strlen(args[i]) + 1; // add 1 for a space | |
787 } | |
788 char* s = NEW_RESOURCE_ARRAY(char, length); | |
789 strcpy(s, args[0]); | |
790 for (int j = 1; j < count; j++) { | |
791 strcat(s, " "); | |
792 strcat(s, args[j]); | |
793 } | |
794 return (const char*) s; | |
795 } | |
796 | |
797 void Arguments::print_on(outputStream* st) { | |
798 st->print_cr("VM Arguments:"); | |
799 if (num_jvm_flags() > 0) { | |
800 st->print("jvm_flags: "); print_jvm_flags_on(st); | |
801 } | |
802 if (num_jvm_args() > 0) { | |
803 st->print("jvm_args: "); print_jvm_args_on(st); | |
804 } | |
805 st->print_cr("java_command: %s", java_command() ? java_command() : "<unknown>"); | |
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806 if (_java_class_path != NULL) { |
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807 char* path = _java_class_path->value(); |
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808 st->print_cr("java_class_path (initial): %s", strlen(path) == 0 ? "<not set>" : path ); |
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809 } |
0 | 810 st->print_cr("Launcher Type: %s", _sun_java_launcher); |
811 } | |
812 | |
813 void Arguments::print_jvm_flags_on(outputStream* st) { | |
814 if (_num_jvm_flags > 0) { | |
815 for (int i=0; i < _num_jvm_flags; i++) { | |
816 st->print("%s ", _jvm_flags_array[i]); | |
817 } | |
818 st->print_cr(""); | |
819 } | |
820 } | |
821 | |
822 void Arguments::print_jvm_args_on(outputStream* st) { | |
823 if (_num_jvm_args > 0) { | |
824 for (int i=0; i < _num_jvm_args; i++) { | |
825 st->print("%s ", _jvm_args_array[i]); | |
826 } | |
827 st->print_cr(""); | |
828 } | |
829 } | |
830 | |
242 | 831 bool Arguments::process_argument(const char* arg, |
832 jboolean ignore_unrecognized, FlagValueOrigin origin) { | |
833 | |
834 JDK_Version since = JDK_Version(); | |
0 | 835 |
3250 | 836 if (parse_argument(arg, origin) || ignore_unrecognized) { |
837 return true; | |
0 | 838 } |
3250 | 839 |
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840 bool has_plus_minus = (*arg == '+' || *arg == '-'); |
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841 const char* const argname = has_plus_minus ? arg + 1 : arg; |
3250 | 842 if (is_newly_obsolete(arg, &since)) { |
843 char version[256]; | |
844 since.to_string(version, sizeof(version)); | |
845 warning("ignoring option %s; support was removed in %s", argname, version); | |
846 return true; | |
847 } | |
848 | |
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849 // For locked flags, report a custom error message if available. |
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850 // Otherwise, report the standard unrecognized VM option. |
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851 |
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852 size_t arg_len; |
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853 const char* equal_sign = strchr(argname, '='); |
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854 if (equal_sign == NULL) { |
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855 arg_len = strlen(argname); |
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856 } else { |
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857 arg_len = equal_sign - argname; |
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858 } |
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859 |
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860 Flag* found_flag = Flag::find_flag((char*)argname, arg_len, true); |
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861 if (found_flag != NULL) { |
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862 char locked_message_buf[BUFLEN]; |
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863 found_flag->get_locked_message(locked_message_buf, BUFLEN); |
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864 if (strlen(locked_message_buf) == 0) { |
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865 if (found_flag->is_bool() && !has_plus_minus) { |
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866 jio_fprintf(defaultStream::error_stream(), |
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867 "Missing +/- setting for VM option '%s'\n", argname); |
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868 } else if (!found_flag->is_bool() && has_plus_minus) { |
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869 jio_fprintf(defaultStream::error_stream(), |
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870 "Unexpected +/- setting in VM option '%s'\n", argname); |
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871 } else { |
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872 jio_fprintf(defaultStream::error_stream(), |
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873 "Improperly specified VM option '%s'\n", argname); |
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874 } |
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875 } else { |
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876 jio_fprintf(defaultStream::error_stream(), "%s", locked_message_buf); |
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877 } |
6017 | 878 } else { |
879 jio_fprintf(defaultStream::error_stream(), | |
880 "Unrecognized VM option '%s'\n", argname); | |
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881 } |
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882 |
3250 | 883 // allow for commandline "commenting out" options like -XX:#+Verbose |
884 return arg[0] == '#'; | |
0 | 885 } |
886 | |
887 bool Arguments::process_settings_file(const char* file_name, bool should_exist, jboolean ignore_unrecognized) { | |
888 FILE* stream = fopen(file_name, "rb"); | |
889 if (stream == NULL) { | |
890 if (should_exist) { | |
891 jio_fprintf(defaultStream::error_stream(), | |
892 "Could not open settings file %s\n", file_name); | |
893 return false; | |
894 } else { | |
895 return true; | |
896 } | |
897 } | |
898 | |
899 char token[1024]; | |
900 int pos = 0; | |
901 | |
902 bool in_white_space = true; | |
903 bool in_comment = false; | |
904 bool in_quote = false; | |
905 char quote_c = 0; | |
906 bool result = true; | |
907 | |
908 int c = getc(stream); | |
6901 | 909 while(c != EOF && pos < (int)(sizeof(token)-1)) { |
0 | 910 if (in_white_space) { |
911 if (in_comment) { | |
912 if (c == '\n') in_comment = false; | |
913 } else { | |
914 if (c == '#') in_comment = true; | |
915 else if (!isspace(c)) { | |
916 in_white_space = false; | |
917 token[pos++] = c; | |
918 } | |
919 } | |
920 } else { | |
921 if (c == '\n' || (!in_quote && isspace(c))) { | |
922 // token ends at newline, or at unquoted whitespace | |
923 // this allows a way to include spaces in string-valued options | |
924 token[pos] = '\0'; | |
925 logOption(token); | |
926 result &= process_argument(token, ignore_unrecognized, CONFIG_FILE); | |
927 build_jvm_flags(token); | |
928 pos = 0; | |
929 in_white_space = true; | |
930 in_quote = false; | |
931 } else if (!in_quote && (c == '\'' || c == '"')) { | |
932 in_quote = true; | |
933 quote_c = c; | |
934 } else if (in_quote && (c == quote_c)) { | |
935 in_quote = false; | |
936 } else { | |
937 token[pos++] = c; | |
938 } | |
939 } | |
940 c = getc(stream); | |
941 } | |
942 if (pos > 0) { | |
943 token[pos] = '\0'; | |
944 result &= process_argument(token, ignore_unrecognized, CONFIG_FILE); | |
945 build_jvm_flags(token); | |
946 } | |
947 fclose(stream); | |
948 return result; | |
949 } | |
950 | |
951 //============================================================================================================= | |
952 // Parsing of properties (-D) | |
953 | |
954 const char* Arguments::get_property(const char* key) { | |
955 return PropertyList_get_value(system_properties(), key); | |
956 } | |
957 | |
958 bool Arguments::add_property(const char* prop) { | |
959 const char* eq = strchr(prop, '='); | |
960 char* key; | |
961 // ns must be static--its address may be stored in a SystemProperty object. | |
962 const static char ns[1] = {0}; | |
963 char* value = (char *)ns; | |
964 | |
965 size_t key_len = (eq == NULL) ? strlen(prop) : (eq - prop); | |
6197 | 966 key = AllocateHeap(key_len + 1, mtInternal); |
0 | 967 strncpy(key, prop, key_len); |
968 key[key_len] = '\0'; | |
969 | |
970 if (eq != NULL) { | |
971 size_t value_len = strlen(prop) - key_len - 1; | |
6197 | 972 value = AllocateHeap(value_len + 1, mtInternal); |
0 | 973 strncpy(value, &prop[key_len + 1], value_len + 1); |
974 } | |
975 | |
976 if (strcmp(key, "java.compiler") == 0) { | |
977 process_java_compiler_argument(value); | |
978 FreeHeap(key); | |
979 if (eq != NULL) { | |
980 FreeHeap(value); | |
981 } | |
982 return true; | |
691 | 983 } else if (strcmp(key, "sun.java.command") == 0) { |
0 | 984 _java_command = value; |
985 | |
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986 // Record value in Arguments, but let it get passed to Java. |
691 | 987 } else if (strcmp(key, "sun.java.launcher.pid") == 0) { |
0 | 988 // launcher.pid property is private and is processed |
989 // in process_sun_java_launcher_properties(); | |
990 // the sun.java.launcher property is passed on to the java application | |
991 FreeHeap(key); | |
992 if (eq != NULL) { | |
993 FreeHeap(value); | |
994 } | |
995 return true; | |
691 | 996 } else if (strcmp(key, "java.vendor.url.bug") == 0) { |
0 | 997 // save it in _java_vendor_url_bug, so JVM fatal error handler can access |
998 // its value without going through the property list or making a Java call. | |
999 _java_vendor_url_bug = value; | |
691 | 1000 } else if (strcmp(key, "sun.boot.library.path") == 0) { |
1001 PropertyList_unique_add(&_system_properties, key, value, true); | |
1002 return true; | |
0 | 1003 } |
1004 // Create new property and add at the end of the list | |
1005 PropertyList_unique_add(&_system_properties, key, value); | |
1006 return true; | |
1007 } | |
1008 | |
1009 //=========================================================================================================== | |
1010 // Setting int/mixed/comp mode flags | |
1011 | |
1012 void Arguments::set_mode_flags(Mode mode) { | |
1013 // Set up default values for all flags. | |
1014 // If you add a flag to any of the branches below, | |
1015 // add a default value for it here. | |
1016 set_java_compiler(false); | |
1017 _mode = mode; | |
1018 | |
1019 // Ensure Agent_OnLoad has the correct initial values. | |
1020 // This may not be the final mode; mode may change later in onload phase. | |
1021 PropertyList_unique_add(&_system_properties, "java.vm.info", | |
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1022 (char*)VM_Version::vm_info_string(), false); |
0 | 1023 |
1024 UseInterpreter = true; | |
1025 UseCompiler = true; | |
1026 UseLoopCounter = true; | |
1027 | |
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1028 #ifndef ZERO |
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1029 // Turn these off for mixed and comp. Leave them on for Zero. |
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1030 if (FLAG_IS_DEFAULT(UseFastAccessorMethods)) { |
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1031 UseFastAccessorMethods = (mode == _int); |
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1032 } |
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1033 if (FLAG_IS_DEFAULT(UseFastEmptyMethods)) { |
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1034 UseFastEmptyMethods = (mode == _int); |
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1035 } |
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1036 #endif |
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1037 |
0 | 1038 // Default values may be platform/compiler dependent - |
1039 // use the saved values | |
1040 ClipInlining = Arguments::_ClipInlining; | |
1041 AlwaysCompileLoopMethods = Arguments::_AlwaysCompileLoopMethods; | |
1042 UseOnStackReplacement = Arguments::_UseOnStackReplacement; | |
1043 BackgroundCompilation = Arguments::_BackgroundCompilation; | |
1044 | |
1045 // Change from defaults based on mode | |
1046 switch (mode) { | |
1047 default: | |
1048 ShouldNotReachHere(); | |
1049 break; | |
1050 case _int: | |
1051 UseCompiler = false; | |
1052 UseLoopCounter = false; | |
1053 AlwaysCompileLoopMethods = false; | |
1054 UseOnStackReplacement = false; | |
1055 break; | |
1056 case _mixed: | |
1057 // same as default | |
1058 break; | |
1059 case _comp: | |
1060 UseInterpreter = false; | |
1061 BackgroundCompilation = false; | |
1062 ClipInlining = false; | |
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1063 // Be much more aggressive in tiered mode with -Xcomp and exercise C2 more. |
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1064 // We will first compile a level 3 version (C1 with full profiling), then do one invocation of it and |
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1065 // compile a level 4 (C2) and then continue executing it. |
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1066 if (TieredCompilation) { |
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1067 Tier3InvokeNotifyFreqLog = 0; |
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1068 Tier4InvocationThreshold = 0; |
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1069 } |
0 | 1070 break; |
1071 } | |
1072 } | |
1073 | |
1074 // Conflict: required to use shared spaces (-Xshare:on), but | |
1075 // incompatible command line options were chosen. | |
1076 | |
1077 static void no_shared_spaces() { | |
1078 if (RequireSharedSpaces) { | |
1079 jio_fprintf(defaultStream::error_stream(), | |
1080 "Class data sharing is inconsistent with other specified options.\n"); | |
1081 vm_exit_during_initialization("Unable to use shared archive.", NULL); | |
1082 } else { | |
1083 FLAG_SET_DEFAULT(UseSharedSpaces, false); | |
1084 } | |
1085 } | |
1086 | |
1783 | 1087 void Arguments::set_tiered_flags() { |
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1088 // With tiered, set default policy to AdvancedThresholdPolicy, which is 3. |
1783 | 1089 if (FLAG_IS_DEFAULT(CompilationPolicyChoice)) { |
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1090 FLAG_SET_DEFAULT(CompilationPolicyChoice, 3); |
1783 | 1091 } |
1092 if (CompilationPolicyChoice < 2) { | |
1093 vm_exit_during_initialization( | |
1094 "Incompatible compilation policy selected", NULL); | |
1095 } | |
1891
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1096 // Increase the code cache size - tiered compiles a lot more. |
1783 | 1097 if (FLAG_IS_DEFAULT(ReservedCodeCacheSize)) { |
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1098 FLAG_SET_DEFAULT(ReservedCodeCacheSize, ReservedCodeCacheSize * 5); |
1783 | 1099 } |
1100 } | |
1101 | |
8001
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1102 #if INCLUDE_ALL_GCS |
4838 | 1103 static void disable_adaptive_size_policy(const char* collector_name) { |
1104 if (UseAdaptiveSizePolicy) { | |
1105 if (FLAG_IS_CMDLINE(UseAdaptiveSizePolicy)) { | |
1106 warning("disabling UseAdaptiveSizePolicy; it is incompatible with %s.", | |
1107 collector_name); | |
1108 } | |
1109 FLAG_SET_DEFAULT(UseAdaptiveSizePolicy, false); | |
1110 } | |
1111 } | |
1112 | |
0 | 1113 void Arguments::set_parnew_gc_flags() { |
1064 | 1114 assert(!UseSerialGC && !UseParallelOldGC && !UseParallelGC && !UseG1GC, |
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1115 "control point invariant"); |
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1116 assert(UseParNewGC, "Error"); |
0 | 1117 |
4838 | 1118 // Turn off AdaptiveSizePolicy for parnew until it is complete. |
1119 disable_adaptive_size_policy("UseParNewGC"); | |
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1120 |
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1121 if (FLAG_IS_DEFAULT(ParallelGCThreads)) { |
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1122 FLAG_SET_DEFAULT(ParallelGCThreads, Abstract_VM_Version::parallel_worker_threads()); |
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1123 assert(ParallelGCThreads > 0, "We should always have at least one thread by default"); |
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1124 } else if (ParallelGCThreads == 0) { |
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1125 jio_fprintf(defaultStream::error_stream(), |
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1126 "The ParNew GC can not be combined with -XX:ParallelGCThreads=0\n"); |
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1127 vm_exit(1); |
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1128 } |
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1129 |
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1130 // By default YoungPLABSize and OldPLABSize are set to 4096 and 1024 respectively, |
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1131 // these settings are default for Parallel Scavenger. For ParNew+Tenured configuration |
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1132 // we set them to 1024 and 1024. |
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1133 // See CR 6362902. |
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1134 if (FLAG_IS_DEFAULT(YoungPLABSize)) { |
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1135 FLAG_SET_DEFAULT(YoungPLABSize, (intx)1024); |
0 | 1136 } |
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1137 if (FLAG_IS_DEFAULT(OldPLABSize)) { |
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1138 FLAG_SET_DEFAULT(OldPLABSize, (intx)1024); |
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1139 } |
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1140 |
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1141 // AlwaysTenure flag should make ParNew promote all at first collection. |
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1142 // See CR 6362902. |
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1143 if (AlwaysTenure) { |
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1144 FLAG_SET_CMDLINE(uintx, MaxTenuringThreshold, 0); |
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1145 } |
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1146 // When using compressed oops, we use local overflow stacks, |
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1147 // rather than using a global overflow list chained through |
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1148 // the klass word of the object's pre-image. |
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1149 if (UseCompressedOops && !ParGCUseLocalOverflow) { |
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1150 if (!FLAG_IS_DEFAULT(ParGCUseLocalOverflow)) { |
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1151 warning("Forcing +ParGCUseLocalOverflow: needed if using compressed references"); |
0 | 1152 } |
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1153 FLAG_SET_DEFAULT(ParGCUseLocalOverflow, true); |
0 | 1154 } |
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1155 assert(ParGCUseLocalOverflow || !UseCompressedOops, "Error"); |
0 | 1156 } |
1157 | |
1158 // Adjust some sizes to suit CMS and/or ParNew needs; these work well on | |
1159 // sparc/solaris for certain applications, but would gain from | |
1160 // further optimization and tuning efforts, and would almost | |
1161 // certainly gain from analysis of platform and environment. | |
1162 void Arguments::set_cms_and_parnew_gc_flags() { | |
1064 | 1163 assert(!UseSerialGC && !UseParallelOldGC && !UseParallelGC, "Error"); |
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1164 assert(UseConcMarkSweepGC, "CMS is expected to be on here"); |
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1165 |
0 | 1166 // If we are using CMS, we prefer to UseParNewGC, |
1167 // unless explicitly forbidden. | |
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1168 if (FLAG_IS_DEFAULT(UseParNewGC)) { |
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1169 FLAG_SET_ERGO(bool, UseParNewGC, true); |
0 | 1170 } |
1171 | |
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1172 // Turn off AdaptiveSizePolicy by default for cms until it is complete. |
4838 | 1173 disable_adaptive_size_policy("UseConcMarkSweepGC"); |
0 | 1174 |
1175 // In either case, adjust ParallelGCThreads and/or UseParNewGC | |
1176 // as needed. | |
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1177 if (UseParNewGC) { |
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1178 set_parnew_gc_flags(); |
0 | 1179 } |
1180 | |
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1181 // MaxHeapSize is aligned down in collectorPolicy |
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1182 size_t max_heap = align_size_down(MaxHeapSize, |
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1183 CardTableRS::ct_max_alignment_constraint()); |
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1184 |
0 | 1185 // Now make adjustments for CMS |
2368
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1186 intx tenuring_default = (intx)6; |
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1187 size_t young_gen_per_worker = CMSYoungGenPerWorker; |
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1188 |
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1189 // Preferred young gen size for "short" pauses: |
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1190 // upper bound depends on # of threads and NewRatio. |
0 | 1191 const uintx parallel_gc_threads = |
1192 (ParallelGCThreads == 0 ? 1 : ParallelGCThreads); | |
1193 const size_t preferred_max_new_size_unaligned = | |
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1194 MIN2(max_heap/(NewRatio+1), ScaleForWordSize(young_gen_per_worker * parallel_gc_threads)); |
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1195 size_t preferred_max_new_size = |
0 | 1196 align_size_up(preferred_max_new_size_unaligned, os::vm_page_size()); |
1197 | |
1198 // Unless explicitly requested otherwise, size young gen | |
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1199 // for "short" pauses ~ CMSYoungGenPerWorker*ParallelGCThreads |
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1200 |
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1201 // If either MaxNewSize or NewRatio is set on the command line, |
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1202 // assume the user is trying to set the size of the young gen. |
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1203 if (FLAG_IS_DEFAULT(MaxNewSize) && FLAG_IS_DEFAULT(NewRatio)) { |
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1204 |
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1205 // Set MaxNewSize to our calculated preferred_max_new_size unless |
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1206 // NewSize was set on the command line and it is larger than |
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1207 // preferred_max_new_size. |
0 | 1208 if (!FLAG_IS_DEFAULT(NewSize)) { // NewSize explicitly set at command-line |
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1209 FLAG_SET_ERGO(uintx, MaxNewSize, MAX2(NewSize, preferred_max_new_size)); |
0 | 1210 } else { |
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1211 FLAG_SET_ERGO(uintx, MaxNewSize, preferred_max_new_size); |
0 | 1212 } |
1064 | 1213 if (PrintGCDetails && Verbose) { |
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1214 // Too early to use gclog_or_tty |
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1215 tty->print_cr("CMS ergo set MaxNewSize: " SIZE_FORMAT, MaxNewSize); |
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1216 } |
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1217 |
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1218 // Code along this path potentially sets NewSize and OldSize |
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1219 |
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1220 assert(max_heap >= InitialHeapSize, "Error"); |
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1221 assert(max_heap >= NewSize, "Error"); |
0 | 1222 |
1064 | 1223 if (PrintGCDetails && Verbose) { |
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1224 // Too early to use gclog_or_tty |
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1225 tty->print_cr("CMS set min_heap_size: " SIZE_FORMAT |
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1226 " initial_heap_size: " SIZE_FORMAT |
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1227 " max_heap: " SIZE_FORMAT, |
1064 | 1228 min_heap_size(), InitialHeapSize, max_heap); |
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1229 } |
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1230 size_t min_new = preferred_max_new_size; |
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1231 if (FLAG_IS_CMDLINE(NewSize)) { |
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1232 min_new = NewSize; |
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1233 } |
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1234 if (max_heap > min_new && min_heap_size() > min_new) { |
0 | 1235 // Unless explicitly requested otherwise, make young gen |
1236 // at least min_new, and at most preferred_max_new_size. | |
1237 if (FLAG_IS_DEFAULT(NewSize)) { | |
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1238 FLAG_SET_ERGO(uintx, NewSize, MAX2(NewSize, min_new)); |
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1239 FLAG_SET_ERGO(uintx, NewSize, MIN2(preferred_max_new_size, NewSize)); |
1064 | 1240 if (PrintGCDetails && Verbose) { |
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1241 // Too early to use gclog_or_tty |
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1242 tty->print_cr("CMS ergo set NewSize: " SIZE_FORMAT, NewSize); |
13
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1243 } |
0 | 1244 } |
1245 // Unless explicitly requested otherwise, size old gen | |
2368
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1246 // so it's NewRatio x of NewSize. |
0 | 1247 if (FLAG_IS_DEFAULT(OldSize)) { |
1248 if (max_heap > NewSize) { | |
2368
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1249 FLAG_SET_ERGO(uintx, OldSize, MIN2(NewRatio*NewSize, max_heap - NewSize)); |
1064 | 1250 if (PrintGCDetails && Verbose) { |
13
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1251 // Too early to use gclog_or_tty |
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1252 tty->print_cr("CMS ergo set OldSize: " SIZE_FORMAT, OldSize); |
13
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1253 } |
0 | 1254 } |
1255 } | |
1256 } | |
1257 } | |
1258 // Unless explicitly requested otherwise, definitely | |
1259 // promote all objects surviving "tenuring_default" scavenges. | |
1260 if (FLAG_IS_DEFAULT(MaxTenuringThreshold) && | |
1261 FLAG_IS_DEFAULT(SurvivorRatio)) { | |
6818 | 1262 FLAG_SET_ERGO(uintx, MaxTenuringThreshold, tenuring_default); |
0 | 1263 } |
1264 // If we decided above (or user explicitly requested) | |
1265 // `promote all' (via MaxTenuringThreshold := 0), | |
1266 // prefer minuscule survivor spaces so as not to waste | |
1267 // space for (non-existent) survivors | |
1268 if (FLAG_IS_DEFAULT(SurvivorRatio) && MaxTenuringThreshold == 0) { | |
8035 | 1269 FLAG_SET_ERGO(uintx, SurvivorRatio, MAX2((uintx)1024, SurvivorRatio)); |
0 | 1270 } |
1271 // If OldPLABSize is set and CMSParPromoteBlocksToClaim is not, | |
1272 // set CMSParPromoteBlocksToClaim equal to OldPLABSize. | |
1273 // This is done in order to make ParNew+CMS configuration to work | |
1274 // with YoungPLABSize and OldPLABSize options. | |
1275 // See CR 6362902. | |
1276 if (!FLAG_IS_DEFAULT(OldPLABSize)) { | |
1277 if (FLAG_IS_DEFAULT(CMSParPromoteBlocksToClaim)) { | |
13
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1278 // OldPLABSize is not the default value but CMSParPromoteBlocksToClaim |
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1279 // is. In this situtation let CMSParPromoteBlocksToClaim follow |
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1280 // the value (either from the command line or ergonomics) of |
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1281 // OldPLABSize. Following OldPLABSize is an ergonomics decision. |
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1282 FLAG_SET_ERGO(uintx, CMSParPromoteBlocksToClaim, OldPLABSize); |
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1283 } else { |
0 | 1284 // OldPLABSize and CMSParPromoteBlocksToClaim are both set. |
1285 // CMSParPromoteBlocksToClaim is a collector-specific flag, so | |
1286 // we'll let it to take precedence. | |
1287 jio_fprintf(defaultStream::error_stream(), | |
886
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1288 "Both OldPLABSize and CMSParPromoteBlocksToClaim" |
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1289 " options are specified for the CMS collector." |
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1290 " CMSParPromoteBlocksToClaim will take precedence.\n"); |
0 | 1291 } |
1292 } | |
1145
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1293 if (!FLAG_IS_DEFAULT(ResizeOldPLAB) && !ResizeOldPLAB) { |
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1294 // OldPLAB sizing manually turned off: Use a larger default setting, |
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1295 // unless it was manually specified. This is because a too-low value |
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1296 // will slow down scavenges. |
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1297 if (FLAG_IS_DEFAULT(CMSParPromoteBlocksToClaim)) { |
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1298 FLAG_SET_ERGO(uintx, CMSParPromoteBlocksToClaim, 50); // default value before 6631166 |
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1299 } |
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1300 } |
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1301 // Overwrite OldPLABSize which is the variable we will internally use everywhere. |
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1302 FLAG_SET_ERGO(uintx, OldPLABSize, CMSParPromoteBlocksToClaim); |
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1303 // If either of the static initialization defaults have changed, note this |
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1304 // modification. |
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1305 if (!FLAG_IS_DEFAULT(CMSParPromoteBlocksToClaim) || !FLAG_IS_DEFAULT(OldPLABWeight)) { |
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1306 CFLS_LAB::modify_initialization(OldPLABSize, OldPLABWeight); |
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1307 } |
1284 | 1308 if (PrintGCDetails && Verbose) { |
1309 tty->print_cr("MarkStackSize: %uk MarkStackSizeMax: %uk", | |
1310 MarkStackSize / K, MarkStackSizeMax / K); | |
1311 tty->print_cr("ConcGCThreads: %u", ConcGCThreads); | |
1312 } | |
0 | 1313 } |
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1314 #endif // INCLUDE_ALL_GCS |
0 | 1315 |
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1316 void set_object_alignment() { |
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1317 // Object alignment. |
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1318 assert(is_power_of_2(ObjectAlignmentInBytes), "ObjectAlignmentInBytes must be power of 2"); |
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1319 MinObjAlignmentInBytes = ObjectAlignmentInBytes; |
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1320 assert(MinObjAlignmentInBytes >= HeapWordsPerLong * HeapWordSize, "ObjectAlignmentInBytes value is too small"); |
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1321 MinObjAlignment = MinObjAlignmentInBytes / HeapWordSize; |
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1322 assert(MinObjAlignmentInBytes == MinObjAlignment * HeapWordSize, "ObjectAlignmentInBytes value is incorrect"); |
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1323 MinObjAlignmentInBytesMask = MinObjAlignmentInBytes - 1; |
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1324 |
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1325 LogMinObjAlignmentInBytes = exact_log2(ObjectAlignmentInBytes); |
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1326 LogMinObjAlignment = LogMinObjAlignmentInBytes - LogHeapWordSize; |
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1327 |
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1328 // Oop encoding heap max |
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1329 OopEncodingHeapMax = (uint64_t(max_juint) + 1) << LogMinObjAlignmentInBytes; |
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1330 |
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1331 #if INCLUDE_ALL_GCS |
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1332 // Set CMS global values |
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1333 CompactibleFreeListSpace::set_cms_values(); |
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1334 #endif // INCLUDE_ALL_GCS |
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1335 } |
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1336 |
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1337 bool verify_object_alignment() { |
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1338 // Object alignment. |
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1339 if (!is_power_of_2(ObjectAlignmentInBytes)) { |
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1340 jio_fprintf(defaultStream::error_stream(), |
1829
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1341 "error: ObjectAlignmentInBytes=%d must be power of 2\n", |
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1342 (int)ObjectAlignmentInBytes); |
1571
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1343 return false; |
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1344 } |
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1345 if ((int)ObjectAlignmentInBytes < BytesPerLong) { |
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1346 jio_fprintf(defaultStream::error_stream(), |
1829
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1347 "error: ObjectAlignmentInBytes=%d must be greater or equal %d\n", |
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1348 (int)ObjectAlignmentInBytes, BytesPerLong); |
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1349 return false; |
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1350 } |
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1351 // It does not make sense to have big object alignment |
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1352 // since a space lost due to alignment will be greater |
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1353 // then a saved space from compressed oops. |
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1354 if ((int)ObjectAlignmentInBytes > 256) { |
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1355 jio_fprintf(defaultStream::error_stream(), |
7461
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1356 "error: ObjectAlignmentInBytes=%d must not be greater than 256\n", |
1829
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1357 (int)ObjectAlignmentInBytes); |
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1358 return false; |
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1359 } |
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1360 // In case page size is very small. |
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1361 if ((int)ObjectAlignmentInBytes >= os::vm_page_size()) { |
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1362 jio_fprintf(defaultStream::error_stream(), |
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1363 "error: ObjectAlignmentInBytes=%d must be less than page size %d\n", |
1829
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1364 (int)ObjectAlignmentInBytes, os::vm_page_size()); |
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1365 return false; |
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1366 } |
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1367 return true; |
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1368 } |
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1369 |
135
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1370 inline uintx max_heap_for_compressed_oops() { |
1963 | 1371 // Avoid sign flip. |
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1372 if (OopEncodingHeapMax < ClassMetaspaceSize + os::vm_page_size()) { |
1963 | 1373 return 0; |
1374 } | |
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1375 LP64_ONLY(return OopEncodingHeapMax - ClassMetaspaceSize - os::vm_page_size()); |
1064 | 1376 NOT_LP64(ShouldNotReachHere(); return 0); |
135
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1377 } |
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1378 |
0 | 1379 bool Arguments::should_auto_select_low_pause_collector() { |
1380 if (UseAutoGCSelectPolicy && | |
1381 !FLAG_IS_DEFAULT(MaxGCPauseMillis) && | |
1382 (MaxGCPauseMillis <= AutoGCSelectPauseMillis)) { | |
1383 if (PrintGCDetails) { | |
1384 // Cannot use gclog_or_tty yet. | |
1385 tty->print_cr("Automatic selection of the low pause collector" | |
1386 " based on pause goal of %d (ms)", MaxGCPauseMillis); | |
1387 } | |
1388 return true; | |
1389 } | |
1390 return false; | |
1391 } | |
1392 | |
1393 void Arguments::set_ergonomics_flags() { | |
1394 | |
4946 | 1395 if (os::is_server_class_machine()) { |
0 | 1396 // If no other collector is requested explicitly, |
1397 // let the VM select the collector based on | |
1398 // machine class and automatic selection policy. | |
1399 if (!UseSerialGC && | |
1400 !UseConcMarkSweepGC && | |
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1401 !UseG1GC && |
0 | 1402 !UseParNewGC && |
1403 FLAG_IS_DEFAULT(UseParallelGC)) { | |
1404 if (should_auto_select_low_pause_collector()) { | |
1405 FLAG_SET_ERGO(bool, UseConcMarkSweepGC, true); | |
1406 } else { | |
1407 FLAG_SET_ERGO(bool, UseParallelGC, true); | |
1408 } | |
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1409 } |
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1410 // Shared spaces work fine with other GCs but causes bytecode rewriting |
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1411 // to be disabled, which hurts interpreter performance and decreases |
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1412 // server performance. On server class machines, keep the default |
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1413 // off unless it is asked for. Future work: either add bytecode rewriting |
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1414 // at link time, or rewrite bytecodes in non-shared methods. |
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1415 if (!DumpSharedSpaces && !RequireSharedSpaces) { |
0 | 1416 no_shared_spaces(); |
1417 } | |
1418 } | |
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1419 |
1010 | 1420 #ifndef ZERO |
113
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1421 #ifdef _LP64 |
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1422 // Check that UseCompressedOops can be set with the max heap size allocated |
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1423 // by ergonomics. |
187 | 1424 if (MaxHeapSize <= max_heap_for_compressed_oops()) { |
1783 | 1425 #if !defined(COMPILER1) || defined(TIERED) |
2228 | 1426 if (FLAG_IS_DEFAULT(UseCompressedOops)) { |
932 | 1427 FLAG_SET_ERGO(bool, UseCompressedOops, true); |
113
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1428 } |
1060 | 1429 #endif |
325
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1430 #ifdef _WIN64 |
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1431 if (UseLargePages && UseCompressedOops) { |
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1432 // Cannot allocate guard pages for implicit checks in indexed addressing |
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1433 // mode, when large pages are specified on windows. |
642
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1434 // This flag could be switched ON if narrow oop base address is set to 0, |
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1435 // see code in Universe::initialize_heap(). |
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1436 Universe::set_narrow_oop_use_implicit_null_checks(false); |
325
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1437 } |
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1438 #endif // _WIN64 |
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1439 } else { |
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1440 if (UseCompressedOops && !FLAG_IS_DEFAULT(UseCompressedOops)) { |
344 | 1441 warning("Max heap size too large for Compressed Oops"); |
113
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1442 FLAG_SET_DEFAULT(UseCompressedOops, false); |
6725
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1443 FLAG_SET_DEFAULT(UseCompressedKlassPointers, false); |
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1444 } |
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1445 } |
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1446 // UseCompressedOops must be on for UseCompressedKlassPointers to be on. |
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1447 if (!UseCompressedOops) { |
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1448 if (UseCompressedKlassPointers) { |
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1449 warning("UseCompressedKlassPointers requires UseCompressedOops"); |
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1450 } |
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1451 FLAG_SET_DEFAULT(UseCompressedKlassPointers, false); |
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1452 } else { |
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1453 // Turn on UseCompressedKlassPointers too |
6848
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1454 if (FLAG_IS_DEFAULT(UseCompressedKlassPointers)) { |
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1455 FLAG_SET_ERGO(bool, UseCompressedKlassPointers, true); |
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1456 } |
6736
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1457 // Set the ClassMetaspaceSize to something that will not need to be |
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1458 // expanded, since it cannot be expanded. |
7982
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1459 if (UseCompressedKlassPointers) { |
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1460 if (ClassMetaspaceSize > KlassEncodingMetaspaceMax) { |
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1461 warning("Class metaspace size is too large for UseCompressedKlassPointers"); |
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1462 FLAG_SET_DEFAULT(UseCompressedKlassPointers, false); |
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1463 } else if (FLAG_IS_DEFAULT(ClassMetaspaceSize)) { |
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1464 // 100,000 classes seems like a good size, so 100M assumes around 1K |
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1465 // per klass. The vtable and oopMap is embedded so we don't have a fixed |
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1466 // size per klass. Eventually, this will be parameterized because it |
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1467 // would also be useful to determine the optimal size of the |
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1468 // systemDictionary. |
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1469 FLAG_SET_ERGO(uintx, ClassMetaspaceSize, 100*M); |
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1470 } |
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1471 } |
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1472 } |
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1473 // Also checks that certain machines are slower with compressed oops |
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1474 // in vm_version initialization code. |
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1475 #endif // _LP64 |
1010 | 1476 #endif // !ZERO |
0 | 1477 } |
1478 | |
1479 void Arguments::set_parallel_gc_flags() { | |
342
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1480 assert(UseParallelGC || UseParallelOldGC, "Error"); |
4879 | 1481 // Enable ParallelOld unless it was explicitly disabled (cmd line or rc file). |
1482 if (FLAG_IS_DEFAULT(UseParallelOldGC)) { | |
1483 FLAG_SET_DEFAULT(UseParallelOldGC, true); | |
0 | 1484 } |
4879 | 1485 FLAG_SET_DEFAULT(UseParallelGC, true); |
0 | 1486 |
1487 // If no heap maximum was requested explicitly, use some reasonable fraction | |
1488 // of the physical memory, up to a maximum of 1GB. | |
7471
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1489 FLAG_SET_DEFAULT(ParallelGCThreads, |
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1490 Abstract_VM_Version::parallel_worker_threads()); |
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1491 if (ParallelGCThreads == 0) { |
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1492 jio_fprintf(defaultStream::error_stream(), |
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1493 "The Parallel GC can not be combined with -XX:ParallelGCThreads=0\n"); |
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1494 vm_exit(1); |
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1495 } |
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1496 |
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1497 |
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1498 // If InitialSurvivorRatio or MinSurvivorRatio were not specified, but the |
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1499 // SurvivorRatio has been set, reset their default values to SurvivorRatio + |
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1500 // 2. By doing this we make SurvivorRatio also work for Parallel Scavenger. |
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1501 // See CR 6362902 for details. |
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1502 if (!FLAG_IS_DEFAULT(SurvivorRatio)) { |
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1503 if (FLAG_IS_DEFAULT(InitialSurvivorRatio)) { |
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1504 FLAG_SET_DEFAULT(InitialSurvivorRatio, SurvivorRatio + 2); |
0 | 1505 } |
7471
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1506 if (FLAG_IS_DEFAULT(MinSurvivorRatio)) { |
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1507 FLAG_SET_DEFAULT(MinSurvivorRatio, SurvivorRatio + 2); |
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1508 } |
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1509 } |
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1510 |
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1511 if (UseParallelOldGC) { |
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1512 // Par compact uses lower default values since they are treated as |
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1513 // minimums. These are different defaults because of the different |
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1514 // interpretation and are not ergonomically set. |
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1515 if (FLAG_IS_DEFAULT(MarkSweepDeadRatio)) { |
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1516 FLAG_SET_DEFAULT(MarkSweepDeadRatio, 1); |
0 | 1517 } |
1518 } | |
1519 } | |
1520 | |
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1521 void Arguments::set_g1_gc_flags() { |
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1522 assert(UseG1GC, "Error"); |
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1523 #if defined(COMPILER1) || defined(GRAAL) |
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1524 FastTLABRefill = false; |
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1525 #endif |
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1526 FLAG_SET_DEFAULT(ParallelGCThreads, |
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1527 Abstract_VM_Version::parallel_worker_threads()); |
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1528 if (ParallelGCThreads == 0) { |
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1529 FLAG_SET_DEFAULT(ParallelGCThreads, |
751 | 1530 Abstract_VM_Version::parallel_worker_threads()); |
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1531 } |
751 | 1532 |
7397
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1533 // MarkStackSize will be set (if it hasn't been set by the user) |
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1534 // when concurrent marking is initialized. |
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1535 // Its value will be based upon the number of parallel marking threads. |
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1536 // But we do set the maximum mark stack size here. |
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1537 if (FLAG_IS_DEFAULT(MarkStackSizeMax)) { |
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|
1538 FLAG_SET_DEFAULT(MarkStackSizeMax, 128 * TASKQUEUE_SIZE); |
1284 | 1539 } |
1356 | 1540 |
1541 if (FLAG_IS_DEFAULT(GCTimeRatio) || GCTimeRatio == 0) { | |
1542 // In G1, we want the default GC overhead goal to be higher than | |
1543 // say in PS. So we set it here to 10%. Otherwise the heap might | |
1544 // be expanded more aggressively than we would like it to. In | |
1545 // fact, even 10% seems to not be high enough in some cases | |
1546 // (especially small GC stress tests that the main thing they do | |
1547 // is allocation). We might consider increase it further. | |
1548 FLAG_SET_DEFAULT(GCTimeRatio, 9); | |
1549 } | |
7397
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1550 |
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1551 if (PrintGCDetails && Verbose) { |
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1552 tty->print_cr("MarkStackSize: %uk MarkStackSizeMax: %uk", |
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|
1553 MarkStackSize / K, MarkStackSizeMax / K); |
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1554 tty->print_cr("ConcGCThreads: %u", ConcGCThreads); |
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1555 } |
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1556 } |
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1557 |
1064 | 1558 void Arguments::set_heap_size() { |
1559 if (!FLAG_IS_DEFAULT(DefaultMaxRAMFraction)) { | |
1560 // Deprecated flag | |
1561 FLAG_SET_CMDLINE(uintx, MaxRAMFraction, DefaultMaxRAMFraction); | |
1562 } | |
1563 | |
1564 const julong phys_mem = | |
1565 FLAG_IS_DEFAULT(MaxRAM) ? MIN2(os::physical_memory(), (julong)MaxRAM) | |
1566 : (julong)MaxRAM; | |
1567 | |
1568 // If the maximum heap size has not been set with -Xmx, | |
1569 // then set it as fraction of the size of physical memory, | |
1570 // respecting the maximum and minimum sizes of the heap. | |
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1571 if (FLAG_IS_DEFAULT(MaxHeapSize)) { |
1064 | 1572 julong reasonable_max = phys_mem / MaxRAMFraction; |
1573 | |
1574 if (phys_mem <= MaxHeapSize * MinRAMFraction) { | |
1575 // Small physical memory, so use a minimum fraction of it for the heap | |
1576 reasonable_max = phys_mem / MinRAMFraction; | |
1577 } else { | |
1578 // Not-small physical memory, so require a heap at least | |
1579 // as large as MaxHeapSize | |
1580 reasonable_max = MAX2(reasonable_max, (julong)MaxHeapSize); | |
1581 } | |
1582 if (!FLAG_IS_DEFAULT(ErgoHeapSizeLimit) && ErgoHeapSizeLimit != 0) { | |
1583 // Limit the heap size to ErgoHeapSizeLimit | |
1584 reasonable_max = MIN2(reasonable_max, (julong)ErgoHeapSizeLimit); | |
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1585 } |
1064 | 1586 if (UseCompressedOops) { |
1587 // Limit the heap size to the maximum possible when using compressed oops | |
1963 | 1588 julong max_coop_heap = (julong)max_heap_for_compressed_oops(); |
1589 if (HeapBaseMinAddress + MaxHeapSize < max_coop_heap) { | |
1590 // Heap should be above HeapBaseMinAddress to get zero based compressed oops | |
1591 // but it should be not less than default MaxHeapSize. | |
1592 max_coop_heap -= HeapBaseMinAddress; | |
1593 } | |
1594 reasonable_max = MIN2(reasonable_max, max_coop_heap); | |
1064 | 1595 } |
1596 reasonable_max = os::allocatable_physical_memory(reasonable_max); | |
1597 | |
1598 if (!FLAG_IS_DEFAULT(InitialHeapSize)) { | |
1599 // An initial heap size was specified on the command line, | |
1600 // so be sure that the maximum size is consistent. Done | |
1601 // after call to allocatable_physical_memory because that | |
1602 // method might reduce the allocation size. | |
1603 reasonable_max = MAX2(reasonable_max, (julong)InitialHeapSize); | |
1604 } | |
1605 | |
342
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1606 if (PrintGCDetails && Verbose) { |
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|
1607 // Cannot use gclog_or_tty yet. |
1064 | 1608 tty->print_cr(" Maximum heap size " SIZE_FORMAT, reasonable_max); |
342
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1609 } |
1064 | 1610 FLAG_SET_ERGO(uintx, MaxHeapSize, (uintx)reasonable_max); |
1611 } | |
1612 | |
1613 // If the initial_heap_size has not been set with InitialHeapSize | |
1614 // or -Xms, then set it as fraction of the size of physical memory, | |
1615 // respecting the maximum and minimum sizes of the heap. | |
1616 if (FLAG_IS_DEFAULT(InitialHeapSize)) { | |
1074
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1617 julong reasonable_minimum = (julong)(OldSize + NewSize); |
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1618 |
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|
1619 reasonable_minimum = MIN2(reasonable_minimum, (julong)MaxHeapSize); |
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1620 |
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|
1621 reasonable_minimum = os::allocatable_physical_memory(reasonable_minimum); |
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|
1622 |
1064 | 1623 julong reasonable_initial = phys_mem / InitialRAMFraction; |
1624 | |
1074
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|
1625 reasonable_initial = MAX2(reasonable_initial, reasonable_minimum); |
1064 | 1626 reasonable_initial = MIN2(reasonable_initial, (julong)MaxHeapSize); |
1627 | |
1628 reasonable_initial = os::allocatable_physical_memory(reasonable_initial); | |
1629 | |
1630 if (PrintGCDetails && Verbose) { | |
1631 // Cannot use gclog_or_tty yet. | |
1632 tty->print_cr(" Initial heap size " SIZE_FORMAT, (uintx)reasonable_initial); | |
1074
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|
1633 tty->print_cr(" Minimum heap size " SIZE_FORMAT, (uintx)reasonable_minimum); |
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|
1634 } |
1064 | 1635 FLAG_SET_ERGO(uintx, InitialHeapSize, (uintx)reasonable_initial); |
1074
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|
1636 set_min_heap_size((uintx)reasonable_minimum); |
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1637 } |
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|
1638 } |
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|
1639 |
0 | 1640 // This must be called after ergonomics because we want bytecode rewriting |
1641 // if the server compiler is used, or if UseSharedSpaces is disabled. | |
1642 void Arguments::set_bytecode_flags() { | |
1643 // Better not attempt to store into a read-only space. | |
1644 if (UseSharedSpaces) { | |
1645 FLAG_SET_DEFAULT(RewriteBytecodes, false); | |
1646 FLAG_SET_DEFAULT(RewriteFrequentPairs, false); | |
1647 } | |
1648 | |
1649 if (!RewriteBytecodes) { | |
1650 FLAG_SET_DEFAULT(RewriteFrequentPairs, false); | |
1651 } | |
1652 } | |
1653 | |
1654 // Aggressive optimization flags -XX:+AggressiveOpts | |
1655 void Arguments::set_aggressive_opts_flags() { | |
17
ff5961f4c095
6395208: Elide autoboxing for calls to HashMap.get(int) and HashMap.get(long)
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|
1656 #ifdef COMPILER2 |
ff5961f4c095
6395208: Elide autoboxing for calls to HashMap.get(int) and HashMap.get(long)
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diff
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|
1657 if (AggressiveOpts || !FLAG_IS_DEFAULT(AutoBoxCacheMax)) { |
ff5961f4c095
6395208: Elide autoboxing for calls to HashMap.get(int) and HashMap.get(long)
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0
diff
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|
1658 if (FLAG_IS_DEFAULT(EliminateAutoBox)) { |
ff5961f4c095
6395208: Elide autoboxing for calls to HashMap.get(int) and HashMap.get(long)
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0
diff
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|
1659 FLAG_SET_DEFAULT(EliminateAutoBox, true); |
ff5961f4c095
6395208: Elide autoboxing for calls to HashMap.get(int) and HashMap.get(long)
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|
1660 } |
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6395208: Elide autoboxing for calls to HashMap.get(int) and HashMap.get(long)
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0
diff
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|
1661 if (FLAG_IS_DEFAULT(AutoBoxCacheMax)) { |
ff5961f4c095
6395208: Elide autoboxing for calls to HashMap.get(int) and HashMap.get(long)
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parents:
0
diff
changeset
|
1662 FLAG_SET_DEFAULT(AutoBoxCacheMax, 20000); |
ff5961f4c095
6395208: Elide autoboxing for calls to HashMap.get(int) and HashMap.get(long)
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0
diff
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|
1663 } |
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6395208: Elide autoboxing for calls to HashMap.get(int) and HashMap.get(long)
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parents:
0
diff
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|
1664 |
ff5961f4c095
6395208: Elide autoboxing for calls to HashMap.get(int) and HashMap.get(long)
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parents:
0
diff
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|
1665 // Feed the cache size setting into the JDK |
ff5961f4c095
6395208: Elide autoboxing for calls to HashMap.get(int) and HashMap.get(long)
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parents:
0
diff
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|
1666 char buffer[1024]; |
513
2328d1d3f8cf
6781583: Hotspot build fails on linux 64 bit platform with gcc 4.3.2
xlu
parents:
489
diff
changeset
|
1667 sprintf(buffer, "java.lang.Integer.IntegerCache.high=" INTX_FORMAT, AutoBoxCacheMax); |
17
ff5961f4c095
6395208: Elide autoboxing for calls to HashMap.get(int) and HashMap.get(long)
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parents:
0
diff
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|
1668 add_property(buffer); |
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diff
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|
1669 } |
416
b6cfd754403d
6649622: HotSpot Biased locking needs tuning on latest CPUs
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parents:
363
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|
1670 if (AggressiveOpts && FLAG_IS_DEFAULT(BiasedLockingStartupDelay)) { |
b6cfd754403d
6649622: HotSpot Biased locking needs tuning on latest CPUs
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parents:
363
diff
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|
1671 FLAG_SET_DEFAULT(BiasedLockingStartupDelay, 500); |
b6cfd754403d
6649622: HotSpot Biased locking needs tuning on latest CPUs
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|
1672 } |
17
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diff
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|
1673 #endif |
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|
1674 |
0 | 1675 if (AggressiveOpts) { |
61 | 1676 // Sample flag setting code |
1677 // if (FLAG_IS_DEFAULT(EliminateZeroing)) { | |
1678 // FLAG_SET_DEFAULT(EliminateZeroing, true); | |
1679 // } | |
0 | 1680 } |
1681 } | |
1682 | |
1683 //=========================================================================================================== | |
1684 // Parsing of java.compiler property | |
1685 | |
1686 void Arguments::process_java_compiler_argument(char* arg) { | |
1687 // For backwards compatibility, Djava.compiler=NONE or "" | |
1688 // causes us to switch to -Xint mode UNLESS -Xdebug | |
1689 // is also specified. | |
1690 if (strlen(arg) == 0 || strcasecmp(arg, "NONE") == 0) { | |
1691 set_java_compiler(true); // "-Djava.compiler[=...]" most recently seen. | |
1692 } | |
1693 } | |
1694 | |
1695 void Arguments::process_java_launcher_argument(const char* launcher, void* extra_info) { | |
1696 _sun_java_launcher = strdup(launcher); | |
2302
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
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2243
diff
changeset
|
1697 if (strcmp("gamma", _sun_java_launcher) == 0) { |
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
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parents:
2243
diff
changeset
|
1698 _created_by_gamma_launcher = true; |
da091bb67459
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diff
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|
1699 } |
0 | 1700 } |
1701 | |
1702 bool Arguments::created_by_java_launcher() { | |
1703 assert(_sun_java_launcher != NULL, "property must have value"); | |
1704 return strcmp(DEFAULT_JAVA_LAUNCHER, _sun_java_launcher) != 0; | |
1705 } | |
1706 | |
2302
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
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2243
diff
changeset
|
1707 bool Arguments::created_by_gamma_launcher() { |
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
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parents:
2243
diff
changeset
|
1708 return _created_by_gamma_launcher; |
da091bb67459
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sla
parents:
2243
diff
changeset
|
1709 } |
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diff
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|
1710 |
0 | 1711 //=========================================================================================================== |
1712 // Parsing of main arguments | |
1713 | |
1244
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
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parents:
1188
diff
changeset
|
1714 bool Arguments::verify_interval(uintx val, uintx min, |
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
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parents:
1188
diff
changeset
|
1715 uintx max, const char* name) { |
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
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1188
diff
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|
1716 // Returns true iff value is in the inclusive interval [min..max] |
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
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1188
diff
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|
1717 // false, otherwise. |
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
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1188
diff
changeset
|
1718 if (val >= min && val <= max) { |
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
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1188
diff
changeset
|
1719 return true; |
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
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1188
diff
changeset
|
1720 } |
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
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parents:
1188
diff
changeset
|
1721 jio_fprintf(defaultStream::error_stream(), |
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
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parents:
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diff
changeset
|
1722 "%s of " UINTX_FORMAT " is invalid; must be between " UINTX_FORMAT |
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
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1188
diff
changeset
|
1723 " and " UINTX_FORMAT "\n", |
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
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parents:
1188
diff
changeset
|
1724 name, val, min, max); |
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
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parents:
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diff
changeset
|
1725 return false; |
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
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diff
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|
1726 } |
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
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diff
changeset
|
1727 |
1744
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
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1681
diff
changeset
|
1728 bool Arguments::verify_min_value(intx val, intx min, const char* name) { |
2366
1fb790245268
6820066: Check that -XX:ParGCArrayScanChunk has a value larger than zero.
jwilhelm
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2362
diff
changeset
|
1729 // Returns true if given value is at least specified min threshold |
1744
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
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diff
changeset
|
1730 // false, otherwise. |
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
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1681
diff
changeset
|
1731 if (val >= min ) { |
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
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1681
diff
changeset
|
1732 return true; |
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
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1681
diff
changeset
|
1733 } |
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
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1681
diff
changeset
|
1734 jio_fprintf(defaultStream::error_stream(), |
2366
1fb790245268
6820066: Check that -XX:ParGCArrayScanChunk has a value larger than zero.
jwilhelm
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2362
diff
changeset
|
1735 "%s of " INTX_FORMAT " is invalid; must be at least " INTX_FORMAT "\n", |
1744
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
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diff
changeset
|
1736 name, val, min); |
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
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diff
changeset
|
1737 return false; |
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
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diff
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|
1738 } |
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
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1681
diff
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|
1739 |
0 | 1740 bool Arguments::verify_percentage(uintx value, const char* name) { |
1741 if (value <= 100) { | |
1742 return true; | |
1743 } | |
1744 jio_fprintf(defaultStream::error_stream(), | |
1745 "%s of " UINTX_FORMAT " is invalid; must be between 0 and 100\n", | |
1746 name, value); | |
1747 return false; | |
1748 } | |
1749 | |
1750 static bool verify_serial_gc_flags() { | |
1751 return (UseSerialGC && | |
945
68ef3fdcdb76
6872136: CMS: confusing message may be printed when a collector is switched off implicitly
ysr
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932
diff
changeset
|
1752 !(UseParNewGC || (UseConcMarkSweepGC || CMSIncrementalMode) || UseG1GC || |
342
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|
1753 UseParallelGC || UseParallelOldGC)); |
0 | 1754 } |
1755 | |
3767
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6941923: RFE: Handling large log files produced by long running Java Applications
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diff
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|
1756 // check if do gclog rotation |
2a241e764894
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|
1757 // +UseGCLogFileRotation is a must, |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
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diff
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|
1758 // no gc log rotation when log file not supplied or |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
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diff
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|
1759 // NumberOfGCLogFiles is 0, or GCLogFileSize is 0 |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
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diff
changeset
|
1760 void check_gclog_consistency() { |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
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diff
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|
1761 if (UseGCLogFileRotation) { |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
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3349
diff
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|
1762 if ((Arguments::gc_log_filename() == NULL) || |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
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3349
diff
changeset
|
1763 (NumberOfGCLogFiles == 0) || |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
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diff
changeset
|
1764 (GCLogFileSize == 0)) { |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
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3349
diff
changeset
|
1765 jio_fprintf(defaultStream::output_stream(), |
3769
ef2d1b8f2dd4
7051430: CMS: ongoing CMS cycle should terminate abruptly to allow prompt JVM termination at exit
ysr
parents:
3767
diff
changeset
|
1766 "To enable GC log rotation, use -Xloggc:<filename> -XX:+UseGCLogFileRotation -XX:NumberOfGCLogFiles=<num_of_files> -XX:GCLogFileSize=<num_of_size>\n" |
3767
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
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3349
diff
changeset
|
1767 "where num_of_file > 0 and num_of_size > 0\n" |
2a241e764894
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diff
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|
1768 "GC log rotation is turned off\n"); |
2a241e764894
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3349
diff
changeset
|
1769 UseGCLogFileRotation = false; |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
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3349
diff
changeset
|
1770 } |
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diff
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|
1771 } |
2a241e764894
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diff
changeset
|
1772 |
2a241e764894
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parents:
3349
diff
changeset
|
1773 if (UseGCLogFileRotation && GCLogFileSize < 8*K) { |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
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parents:
3349
diff
changeset
|
1774 FLAG_SET_CMDLINE(uintx, GCLogFileSize, 8*K); |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
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3349
diff
changeset
|
1775 jio_fprintf(defaultStream::output_stream(), |
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1776 "GCLogFileSize changed to minimum 8K\n"); |
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1777 } |
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1778 } |
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1779 |
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1780 // Check consistency of GC selection |
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1781 bool Arguments::check_gc_consistency() { |
3767
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1782 check_gclog_consistency(); |
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1783 bool status = true; |
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1784 // Ensure that the user has not selected conflicting sets |
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1785 // of collectors. [Note: this check is merely a user convenience; |
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1786 // collectors over-ride each other so that only a non-conflicting |
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1787 // set is selected; however what the user gets is not what they |
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1788 // may have expected from the combination they asked for. It's |
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1789 // better to reduce user confusion by not allowing them to |
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1790 // select conflicting combinations. |
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1791 uint i = 0; |
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1792 if (UseSerialGC) i++; |
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1793 if (UseConcMarkSweepGC || UseParNewGC) i++; |
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1794 if (UseParallelGC || UseParallelOldGC) i++; |
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1795 if (UseG1GC) i++; |
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1796 if (i > 1) { |
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1797 jio_fprintf(defaultStream::error_stream(), |
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1798 "Conflicting collector combinations in option list; " |
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1799 "please refer to the release notes for the combinations " |
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1800 "allowed\n"); |
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1801 status = false; |
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1802 } |
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1803 |
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1804 return status; |
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1805 } |
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1806 |
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1807 void Arguments::check_deprecated_gcs() { |
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1808 if (UseConcMarkSweepGC && !UseParNewGC) { |
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1809 warning("Using the DefNew young collector with the CMS collector is deprecated " |
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1810 "and will likely be removed in a future release"); |
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1811 } |
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1812 |
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1813 if (UseParNewGC && !UseConcMarkSweepGC) { |
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1814 // !UseConcMarkSweepGC means that we are using serial old gc. Unfortunately we don't |
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1815 // set up UseSerialGC properly, so that can't be used in the check here. |
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1816 warning("Using the ParNew young collector with the Serial old collector is deprecated " |
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1817 "and will likely be removed in a future release"); |
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1818 } |
7453 | 1819 |
1820 if (CMSIncrementalMode) { | |
1821 warning("Using incremental CMS is deprecated and will likely be removed in a future release"); | |
1822 } | |
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1823 } |
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1824 |
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1825 // Check stack pages settings |
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1826 bool Arguments::check_stack_pages() |
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1827 { |
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1828 bool status = true; |
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1829 status = status && verify_min_value(StackYellowPages, 1, "StackYellowPages"); |
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1830 status = status && verify_min_value(StackRedPages, 1, "StackRedPages"); |
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1831 // greater stack shadow pages can't generate instruction to bang stack |
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1832 status = status && verify_interval(StackShadowPages, 1, 50, "StackShadowPages"); |
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1833 return status; |
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1834 } |
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1835 |
0 | 1836 // Check the consistency of vm_init_args |
1837 bool Arguments::check_vm_args_consistency() { | |
1838 // Method for adding checks for flag consistency. | |
1839 // The intent is to warn the user of all possible conflicts, | |
1840 // before returning an error. | |
1841 // Note: Needs platform-dependent factoring. | |
1842 bool status = true; | |
1843 | |
1844 #if ( (defined(COMPILER2) && defined(SPARC))) | |
1845 // NOTE: The call to VM_Version_init depends on the fact that VM_Version_init | |
1846 // on sparc doesn't require generation of a stub as is the case on, e.g., | |
1847 // x86. Normally, VM_Version_init must be called from init_globals in | |
1848 // init.cpp, which is called by the initial java thread *after* arguments | |
1849 // have been parsed. VM_Version_init gets called twice on sparc. | |
1850 extern void VM_Version_init(); | |
1851 VM_Version_init(); | |
1852 if (!VM_Version::has_v9()) { | |
1853 jio_fprintf(defaultStream::error_stream(), | |
1854 "V8 Machine detected, Server requires V9\n"); | |
1855 status = false; | |
1856 } | |
1857 #endif /* COMPILER2 && SPARC */ | |
1858 | |
1859 // Allow both -XX:-UseStackBanging and -XX:-UseBoundThreads in non-product | |
1860 // builds so the cost of stack banging can be measured. | |
1861 #if (defined(PRODUCT) && defined(SOLARIS)) | |
1862 if (!UseBoundThreads && !UseStackBanging) { | |
1863 jio_fprintf(defaultStream::error_stream(), | |
1864 "-UseStackBanging conflicts with -UseBoundThreads\n"); | |
1865 | |
1866 status = false; | |
1867 } | |
1868 #endif | |
1869 | |
1870 if (TLABRefillWasteFraction == 0) { | |
1871 jio_fprintf(defaultStream::error_stream(), | |
1872 "TLABRefillWasteFraction should be a denominator, " | |
1873 "not " SIZE_FORMAT "\n", | |
1874 TLABRefillWasteFraction); | |
1875 status = false; | |
1876 } | |
1877 | |
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1878 status = status && verify_percentage(AdaptiveSizePolicyWeight, |
0 | 1879 "AdaptiveSizePolicyWeight"); |
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1880 status = status && verify_percentage(ThresholdTolerance, "ThresholdTolerance"); |
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1881 status = status && verify_percentage(MinHeapFreeRatio, "MinHeapFreeRatio"); |
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1882 status = status && verify_percentage(MaxHeapFreeRatio, "MaxHeapFreeRatio"); |
0 | 1883 |
6982
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1884 // Divide by bucket size to prevent a large size from causing rollover when |
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1885 // calculating amount of memory needed to be allocated for the String table. |
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1886 status = status && verify_interval(StringTableSize, defaultStringTableSize, |
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1887 (max_uintx / StringTable::bucket_size()), "StringTable size"); |
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1888 |
0 | 1889 if (MinHeapFreeRatio > MaxHeapFreeRatio) { |
1890 jio_fprintf(defaultStream::error_stream(), | |
1891 "MinHeapFreeRatio (" UINTX_FORMAT ") must be less than or " | |
1892 "equal to MaxHeapFreeRatio (" UINTX_FORMAT ")\n", | |
1893 MinHeapFreeRatio, MaxHeapFreeRatio); | |
1894 status = false; | |
1895 } | |
1896 // Keeping the heap 100% free is hard ;-) so limit it to 99%. | |
1897 MinHeapFreeRatio = MIN2(MinHeapFreeRatio, (uintx) 99); | |
1898 | |
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1899 // Min/MaxMetaspaceFreeRatio |
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1900 status = status && verify_percentage(MinMetaspaceFreeRatio, "MinMetaspaceFreeRatio"); |
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1901 status = status && verify_percentage(MaxMetaspaceFreeRatio, "MaxMetaspaceFreeRatio"); |
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1902 |
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1903 if (MinMetaspaceFreeRatio > MaxMetaspaceFreeRatio) { |
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1904 jio_fprintf(defaultStream::error_stream(), |
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1905 "MinMetaspaceFreeRatio (%s" UINTX_FORMAT ") must be less than or " |
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1906 "equal to MaxMetaspaceFreeRatio (%s" UINTX_FORMAT ")\n", |
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1907 FLAG_IS_DEFAULT(MinMetaspaceFreeRatio) ? "Default: " : "", |
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1908 MinMetaspaceFreeRatio, |
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1909 FLAG_IS_DEFAULT(MaxMetaspaceFreeRatio) ? "Default: " : "", |
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1910 MaxMetaspaceFreeRatio); |
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1911 status = false; |
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1912 } |
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1913 |
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1914 // Trying to keep 100% free is not practical |
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1915 MinMetaspaceFreeRatio = MIN2(MinMetaspaceFreeRatio, (uintx) 99); |
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1916 |
0 | 1917 if (FullGCALot && FLAG_IS_DEFAULT(MarkSweepAlwaysCompactCount)) { |
1918 MarkSweepAlwaysCompactCount = 1; // Move objects every gc. | |
1919 } | |
1920 | |
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1921 if (UseParallelOldGC && ParallelOldGCSplitALot) { |
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1922 // Settings to encourage splitting. |
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1923 if (!FLAG_IS_CMDLINE(NewRatio)) { |
8035 | 1924 FLAG_SET_CMDLINE(uintx, NewRatio, 2); |
483
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|
1925 } |
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1926 if (!FLAG_IS_CMDLINE(ScavengeBeforeFullGC)) { |
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1927 FLAG_SET_CMDLINE(bool, ScavengeBeforeFullGC, false); |
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|
1928 } |
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|
1929 } |
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|
1930 |
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1931 status = status && verify_percentage(GCHeapFreeLimit, "GCHeapFreeLimit"); |
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1932 status = status && verify_percentage(GCTimeLimit, "GCTimeLimit"); |
0 | 1933 if (GCTimeLimit == 100) { |
1934 // Turn off gc-overhead-limit-exceeded checks | |
1935 FLAG_SET_DEFAULT(UseGCOverheadLimit, false); | |
1936 } | |
1937 | |
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1938 status = status && verify_percentage(GCHeapFreeLimit, "GCHeapFreeLimit"); |
0 | 1939 |
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1940 status = status && check_gc_consistency(); |
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1941 status = status && check_stack_pages(); |
0 | 1942 |
1943 if (_has_alloc_profile) { | |
1944 if (UseParallelGC || UseParallelOldGC) { | |
1945 jio_fprintf(defaultStream::error_stream(), | |
1946 "error: invalid argument combination.\n" | |
1947 "Allocation profiling (-Xaprof) cannot be used together with " | |
1948 "Parallel GC (-XX:+UseParallelGC or -XX:+UseParallelOldGC).\n"); | |
1949 status = false; | |
1950 } | |
1951 if (UseConcMarkSweepGC) { | |
1952 jio_fprintf(defaultStream::error_stream(), | |
1953 "error: invalid argument combination.\n" | |
1954 "Allocation profiling (-Xaprof) cannot be used together with " | |
1955 "the CMS collector (-XX:+UseConcMarkSweepGC).\n"); | |
1956 status = false; | |
1957 } | |
1958 } | |
1959 | |
1960 if (CMSIncrementalMode) { | |
1961 if (!UseConcMarkSweepGC) { | |
1962 jio_fprintf(defaultStream::error_stream(), | |
1963 "error: invalid argument combination.\n" | |
1964 "The CMS collector (-XX:+UseConcMarkSweepGC) must be " | |
1965 "selected in order\nto use CMSIncrementalMode.\n"); | |
1966 status = false; | |
1967 } else { | |
10
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1968 status = status && verify_percentage(CMSIncrementalDutyCycle, |
0 | 1969 "CMSIncrementalDutyCycle"); |
10
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1970 status = status && verify_percentage(CMSIncrementalDutyCycleMin, |
0 | 1971 "CMSIncrementalDutyCycleMin"); |
10
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1972 status = status && verify_percentage(CMSIncrementalSafetyFactor, |
0 | 1973 "CMSIncrementalSafetyFactor"); |
10
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1974 status = status && verify_percentage(CMSIncrementalOffset, |
0 | 1975 "CMSIncrementalOffset"); |
10
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1976 status = status && verify_percentage(CMSExpAvgFactor, |
0 | 1977 "CMSExpAvgFactor"); |
1978 // If it was not set on the command line, set | |
1979 // CMSInitiatingOccupancyFraction to 1 so icms can initiate cycles early. | |
1980 if (CMSInitiatingOccupancyFraction < 0) { | |
1981 FLAG_SET_DEFAULT(CMSInitiatingOccupancyFraction, 1); | |
1982 } | |
1983 } | |
1984 } | |
1985 | |
1986 // CMS space iteration, which FLSVerifyAllHeapreferences entails, | |
1987 // insists that we hold the requisite locks so that the iteration is | |
1988 // MT-safe. For the verification at start-up and shut-down, we don't | |
1989 // yet have a good way of acquiring and releasing these locks, | |
1990 // which are not visible at the CollectedHeap level. We want to | |
1991 // be able to acquire these locks and then do the iteration rather | |
1992 // than just disable the lock verification. This will be fixed under | |
1993 // bug 4788986. | |
1994 if (UseConcMarkSweepGC && FLSVerifyAllHeapReferences) { | |
1995 if (VerifyGCStartAt == 0) { | |
1996 warning("Heap verification at start-up disabled " | |
1997 "(due to current incompatibility with FLSVerifyAllHeapReferences)"); | |
1998 VerifyGCStartAt = 1; // Disable verification at start-up | |
1999 } | |
2000 if (VerifyBeforeExit) { | |
2001 warning("Heap verification at shutdown disabled " | |
2002 "(due to current incompatibility with FLSVerifyAllHeapReferences)"); | |
2003 VerifyBeforeExit = false; // Disable verification at shutdown | |
2004 } | |
2005 } | |
2006 | |
2007 // Note: only executed in non-PRODUCT mode | |
2008 if (!UseAsyncConcMarkSweepGC && | |
2009 (ExplicitGCInvokesConcurrent || | |
2010 ExplicitGCInvokesConcurrentAndUnloadsClasses)) { | |
2011 jio_fprintf(defaultStream::error_stream(), | |
6628
bb3f6194fedb
7178363: G1: Remove the serial code for PrintGCDetails and make it a special case of the parallel code
brutisso
parents:
6266
diff
changeset
|
2012 "error: +ExplicitGCInvokesConcurrent[AndUnloadsClasses] conflicts" |
0 | 2013 " with -UseAsyncConcMarkSweepGC"); |
2014 status = false; | |
2015 } | |
2016 | |
2366
1fb790245268
6820066: Check that -XX:ParGCArrayScanChunk has a value larger than zero.
jwilhelm
parents:
2362
diff
changeset
|
2017 status = status && verify_min_value(ParGCArrayScanChunk, 1, "ParGCArrayScanChunk"); |
1fb790245268
6820066: Check that -XX:ParGCArrayScanChunk has a value larger than zero.
jwilhelm
parents:
2362
diff
changeset
|
2018 |
8001
db9981fd3124
8005915: Unify SERIALGC and INCLUDE_ALTERNATE_GCS
jprovino
parents:
7479
diff
changeset
|
2019 #if INCLUDE_ALL_GCS |
1283
1c72304f1885
6928073: G1: use existing command line parameters for marking cycle initiation
tonyp
parents:
1257
diff
changeset
|
2020 if (UseG1GC) { |
1c72304f1885
6928073: G1: use existing command line parameters for marking cycle initiation
tonyp
parents:
1257
diff
changeset
|
2021 status = status && verify_percentage(InitiatingHeapOccupancyPercent, |
1c72304f1885
6928073: G1: use existing command line parameters for marking cycle initiation
tonyp
parents:
1257
diff
changeset
|
2022 "InitiatingHeapOccupancyPercent"); |
2174
234761c55641
6608385: G1: need to support parallel reference processing
johnc
parents:
2129
diff
changeset
|
2023 status = status && verify_min_value(G1RefProcDrainInterval, 1, |
234761c55641
6608385: G1: need to support parallel reference processing
johnc
parents:
2129
diff
changeset
|
2024 "G1RefProcDrainInterval"); |
234761c55641
6608385: G1: need to support parallel reference processing
johnc
parents:
2129
diff
changeset
|
2025 status = status && verify_min_value((intx)G1ConcMarkStepDurationMillis, 1, |
234761c55641
6608385: G1: need to support parallel reference processing
johnc
parents:
2129
diff
changeset
|
2026 "G1ConcMarkStepDurationMillis"); |
1283
1c72304f1885
6928073: G1: use existing command line parameters for marking cycle initiation
tonyp
parents:
1257
diff
changeset
|
2027 } |
8001
db9981fd3124
8005915: Unify SERIALGC and INCLUDE_ALTERNATE_GCS
jprovino
parents:
7479
diff
changeset
|
2028 #endif // INCLUDE_ALL_GCS |
1283
1c72304f1885
6928073: G1: use existing command line parameters for marking cycle initiation
tonyp
parents:
1257
diff
changeset
|
2029 |
1244
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
2030 status = status && verify_interval(RefDiscoveryPolicy, |
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
2031 ReferenceProcessor::DiscoveryPolicyMin, |
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
2032 ReferenceProcessor::DiscoveryPolicyMax, |
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
2033 "RefDiscoveryPolicy"); |
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
2034 |
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
2035 // Limit the lower bound of this flag to 1 as it is used in a division |
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
2036 // expression. |
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
2037 status = status && verify_interval(TLABWasteTargetPercent, |
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
2038 1, 100, "TLABWasteTargetPercent"); |
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
2039 |
1571
2d127394260e
6916623: Align object to 16 bytes to use Compressed Oops with java heap up to 64Gb
kvn
parents:
1506
diff
changeset
|
2040 status = status && verify_object_alignment(); |
2d127394260e
6916623: Align object to 16 bytes to use Compressed Oops with java heap up to 64Gb
kvn
parents:
1506
diff
changeset
|
2041 |
6736
11fb740ce98f
7196103: NPG: Unable to allocate bit map for parallel garbage collection for the requested heap size
coleenp
parents:
6725
diff
changeset
|
2042 status = status && verify_min_value(ClassMetaspaceSize, 1*M, |
11fb740ce98f
7196103: NPG: Unable to allocate bit map for parallel garbage collection for the requested heap size
coleenp
parents:
6725
diff
changeset
|
2043 "ClassMetaspaceSize"); |
11fb740ce98f
7196103: NPG: Unable to allocate bit map for parallel garbage collection for the requested heap size
coleenp
parents:
6725
diff
changeset
|
2044 |
7397
442f942757c0
8000244: G1: Ergonomically set MarkStackSize and use virtual space for global marking stack
johnc
parents:
7177
diff
changeset
|
2045 status = status && verify_interval(MarkStackSizeMax, |
442f942757c0
8000244: G1: Ergonomically set MarkStackSize and use virtual space for global marking stack
johnc
parents:
7177
diff
changeset
|
2046 1, (max_jint - 1), "MarkStackSizeMax"); |
442f942757c0
8000244: G1: Ergonomically set MarkStackSize and use virtual space for global marking stack
johnc
parents:
7177
diff
changeset
|
2047 |
6755
bc675e55b48c
7193946: Move warnings associated with UseMemSetInBOT flag
johnc
parents:
6736
diff
changeset
|
2048 #ifdef SPARC |
bc675e55b48c
7193946: Move warnings associated with UseMemSetInBOT flag
johnc
parents:
6736
diff
changeset
|
2049 if (UseConcMarkSweepGC || UseG1GC) { |
bc675e55b48c
7193946: Move warnings associated with UseMemSetInBOT flag
johnc
parents:
6736
diff
changeset
|
2050 // Issue a stern warning if the user has explicitly set |
bc675e55b48c
7193946: Move warnings associated with UseMemSetInBOT flag
johnc
parents:
6736
diff
changeset
|
2051 // UseMemSetInBOT (it is known to cause issues), but allow |
bc675e55b48c
7193946: Move warnings associated with UseMemSetInBOT flag
johnc
parents:
6736
diff
changeset
|
2052 // use for experimentation and debugging. |
bc675e55b48c
7193946: Move warnings associated with UseMemSetInBOT flag
johnc
parents:
6736
diff
changeset
|
2053 if (VM_Version::is_sun4v() && UseMemSetInBOT) { |
bc675e55b48c
7193946: Move warnings associated with UseMemSetInBOT flag
johnc
parents:
6736
diff
changeset
|
2054 assert(!FLAG_IS_DEFAULT(UseMemSetInBOT), "Error"); |
bc675e55b48c
7193946: Move warnings associated with UseMemSetInBOT flag
johnc
parents:
6736
diff
changeset
|
2055 warning("Experimental flag -XX:+UseMemSetInBOT is known to cause instability" |
bc675e55b48c
7193946: Move warnings associated with UseMemSetInBOT flag
johnc
parents:
6736
diff
changeset
|
2056 " on sun4v; please understand that you are using at your own risk!"); |
bc675e55b48c
7193946: Move warnings associated with UseMemSetInBOT flag
johnc
parents:
6736
diff
changeset
|
2057 } |
bc675e55b48c
7193946: Move warnings associated with UseMemSetInBOT flag
johnc
parents:
6736
diff
changeset
|
2058 } |
bc675e55b48c
7193946: Move warnings associated with UseMemSetInBOT flag
johnc
parents:
6736
diff
changeset
|
2059 #endif // SPARC |
bc675e55b48c
7193946: Move warnings associated with UseMemSetInBOT flag
johnc
parents:
6736
diff
changeset
|
2060 |
6854
fb19af007ffc
7189254: Change makefiles for more flexibility to override defaults
jprovino
parents:
6818
diff
changeset
|
2061 if (PrintNMTStatistics) { |
fb19af007ffc
7189254: Change makefiles for more flexibility to override defaults
jprovino
parents:
6818
diff
changeset
|
2062 #if INCLUDE_NMT |
fb19af007ffc
7189254: Change makefiles for more flexibility to override defaults
jprovino
parents:
6818
diff
changeset
|
2063 if (MemTracker::tracking_level() == MemTracker::NMT_off) { |
fb19af007ffc
7189254: Change makefiles for more flexibility to override defaults
jprovino
parents:
6818
diff
changeset
|
2064 #endif // INCLUDE_NMT |
fb19af007ffc
7189254: Change makefiles for more flexibility to override defaults
jprovino
parents:
6818
diff
changeset
|
2065 warning("PrintNMTStatistics is disabled, because native memory tracking is not enabled"); |
fb19af007ffc
7189254: Change makefiles for more flexibility to override defaults
jprovino
parents:
6818
diff
changeset
|
2066 PrintNMTStatistics = false; |
fb19af007ffc
7189254: Change makefiles for more flexibility to override defaults
jprovino
parents:
6818
diff
changeset
|
2067 #if INCLUDE_NMT |
fb19af007ffc
7189254: Change makefiles for more flexibility to override defaults
jprovino
parents:
6818
diff
changeset
|
2068 } |
fb19af007ffc
7189254: Change makefiles for more flexibility to override defaults
jprovino
parents:
6818
diff
changeset
|
2069 #endif |
6770
9a86ddfc6c8f
7188594: Print statistic collected by NMT with VM flag
zgu
parents:
6736
diff
changeset
|
2070 } |
4559
723df37192d6
Make it possible again to build a real client libjvm, drop the UseGraal flag.
Gilles Duboscq <duboscq@ssw.jku.at>
parents:
4350
diff
changeset
|
2071 #ifdef GRAAL |
723df37192d6
Make it possible again to build a real client libjvm, drop the UseGraal flag.
Gilles Duboscq <duboscq@ssw.jku.at>
parents:
4350
diff
changeset
|
2072 if (UseCompressedOops) { |
8393
0e2c530885d1
If IgnoreUnrecognizedVMOptions is set then the Graal checks for unsupported options is just a warning instead of an error
Gilles Duboscq <duboscq@ssw.jku.at>
parents:
8213
diff
changeset
|
2073 if (IgnoreUnrecognizedVMOptions) { |
0e2c530885d1
If IgnoreUnrecognizedVMOptions is set then the Graal checks for unsupported options is just a warning instead of an error
Gilles Duboscq <duboscq@ssw.jku.at>
parents:
8213
diff
changeset
|
2074 warning("UseCompressedOops is disabled, because it is not supported by Graal"); |
0e2c530885d1
If IgnoreUnrecognizedVMOptions is set then the Graal checks for unsupported options is just a warning instead of an error
Gilles Duboscq <duboscq@ssw.jku.at>
parents:
8213
diff
changeset
|
2075 FLAG_SET_CMDLINE(bool, UseCompressedOops, false); |
0e2c530885d1
If IgnoreUnrecognizedVMOptions is set then the Graal checks for unsupported options is just a warning instead of an error
Gilles Duboscq <duboscq@ssw.jku.at>
parents:
8213
diff
changeset
|
2076 } else { |
0e2c530885d1
If IgnoreUnrecognizedVMOptions is set then the Graal checks for unsupported options is just a warning instead of an error
Gilles Duboscq <duboscq@ssw.jku.at>
parents:
8213
diff
changeset
|
2077 jio_fprintf(defaultStream::error_stream(), |
4559
723df37192d6
Make it possible again to build a real client libjvm, drop the UseGraal flag.
Gilles Duboscq <duboscq@ssw.jku.at>
parents:
4350
diff
changeset
|
2078 "CompressedOops are not supported in Graal at the moment\n"); |
8393
0e2c530885d1
If IgnoreUnrecognizedVMOptions is set then the Graal checks for unsupported options is just a warning instead of an error
Gilles Duboscq <duboscq@ssw.jku.at>
parents:
8213
diff
changeset
|
2079 status = false; |
0e2c530885d1
If IgnoreUnrecognizedVMOptions is set then the Graal checks for unsupported options is just a warning instead of an error
Gilles Duboscq <duboscq@ssw.jku.at>
parents:
8213
diff
changeset
|
2080 } |
7125
1baf7f1e3f23
decoupled C++ Graal runtime from C1
Doug Simon <doug.simon@oracle.com>
parents:
7066
diff
changeset
|
2081 } else { |
1baf7f1e3f23
decoupled C++ Graal runtime from C1
Doug Simon <doug.simon@oracle.com>
parents:
7066
diff
changeset
|
2082 // This prevents the flag being set to true by set_ergonomics_flags() |
1baf7f1e3f23
decoupled C++ Graal runtime from C1
Doug Simon <doug.simon@oracle.com>
parents:
7066
diff
changeset
|
2083 FLAG_SET_CMDLINE(bool, UseCompressedOops, false); |
4559
723df37192d6
Make it possible again to build a real client libjvm, drop the UseGraal flag.
Gilles Duboscq <duboscq@ssw.jku.at>
parents:
4350
diff
changeset
|
2084 } |
7125
1baf7f1e3f23
decoupled C++ Graal runtime from C1
Doug Simon <doug.simon@oracle.com>
parents:
7066
diff
changeset
|
2085 |
6995
edb2d7ed9a01
ensure UseCompressedKlassPointers is disabled in Graal VM
Doug Simon <doug.simon@oracle.com>
parents:
6948
diff
changeset
|
2086 if (UseCompressedKlassPointers) { |
8393
0e2c530885d1
If IgnoreUnrecognizedVMOptions is set then the Graal checks for unsupported options is just a warning instead of an error
Gilles Duboscq <duboscq@ssw.jku.at>
parents:
8213
diff
changeset
|
2087 if (IgnoreUnrecognizedVMOptions) { |
0e2c530885d1
If IgnoreUnrecognizedVMOptions is set then the Graal checks for unsupported options is just a warning instead of an error
Gilles Duboscq <duboscq@ssw.jku.at>
parents:
8213
diff
changeset
|
2088 warning("UseCompressedKlassPointers is disabled, because it is not supported by Graal"); |
0e2c530885d1
If IgnoreUnrecognizedVMOptions is set then the Graal checks for unsupported options is just a warning instead of an error
Gilles Duboscq <duboscq@ssw.jku.at>
parents:
8213
diff
changeset
|
2089 FLAG_SET_CMDLINE(bool, UseCompressedKlassPointers, false); |
0e2c530885d1
If IgnoreUnrecognizedVMOptions is set then the Graal checks for unsupported options is just a warning instead of an error
Gilles Duboscq <duboscq@ssw.jku.at>
parents:
8213
diff
changeset
|
2090 } else { |
0e2c530885d1
If IgnoreUnrecognizedVMOptions is set then the Graal checks for unsupported options is just a warning instead of an error
Gilles Duboscq <duboscq@ssw.jku.at>
parents:
8213
diff
changeset
|
2091 jio_fprintf(defaultStream::error_stream(), |
6995
edb2d7ed9a01
ensure UseCompressedKlassPointers is disabled in Graal VM
Doug Simon <doug.simon@oracle.com>
parents:
6948
diff
changeset
|
2092 "UseCompressedKlassPointers are not supported in Graal at the moment\n"); |
8393
0e2c530885d1
If IgnoreUnrecognizedVMOptions is set then the Graal checks for unsupported options is just a warning instead of an error
Gilles Duboscq <duboscq@ssw.jku.at>
parents:
8213
diff
changeset
|
2093 status = false; |
0e2c530885d1
If IgnoreUnrecognizedVMOptions is set then the Graal checks for unsupported options is just a warning instead of an error
Gilles Duboscq <duboscq@ssw.jku.at>
parents:
8213
diff
changeset
|
2094 } |
7125
1baf7f1e3f23
decoupled C++ Graal runtime from C1
Doug Simon <doug.simon@oracle.com>
parents:
7066
diff
changeset
|
2095 } else { |
1baf7f1e3f23
decoupled C++ Graal runtime from C1
Doug Simon <doug.simon@oracle.com>
parents:
7066
diff
changeset
|
2096 // This prevents the flag being set to true by set_ergonomics_flags() |
1baf7f1e3f23
decoupled C++ Graal runtime from C1
Doug Simon <doug.simon@oracle.com>
parents:
7066
diff
changeset
|
2097 FLAG_SET_CMDLINE(bool, UseCompressedKlassPointers, false); |
6995
edb2d7ed9a01
ensure UseCompressedKlassPointers is disabled in Graal VM
Doug Simon <doug.simon@oracle.com>
parents:
6948
diff
changeset
|
2098 } |
8507
c92949b1ec8a
-Changes after CR-243
Christos Kotselidis <christos.kotselidis@oracle.com>
parents:
8506
diff
changeset
|
2099 if (UseG1GC) { |
c92949b1ec8a
-Changes after CR-243
Christos Kotselidis <christos.kotselidis@oracle.com>
parents:
8506
diff
changeset
|
2100 if (IgnoreUnrecognizedVMOptions) { |
c92949b1ec8a
-Changes after CR-243
Christos Kotselidis <christos.kotselidis@oracle.com>
parents:
8506
diff
changeset
|
2101 warning("UseG1GC is still experimental in Graal, use SerialGC instead "); |
c92949b1ec8a
-Changes after CR-243
Christos Kotselidis <christos.kotselidis@oracle.com>
parents:
8506
diff
changeset
|
2102 FLAG_SET_CMDLINE(bool, UseG1GC, true); |
c92949b1ec8a
-Changes after CR-243
Christos Kotselidis <christos.kotselidis@oracle.com>
parents:
8506
diff
changeset
|
2103 } else { |
c92949b1ec8a
-Changes after CR-243
Christos Kotselidis <christos.kotselidis@oracle.com>
parents:
8506
diff
changeset
|
2104 warning("UseG1GC is still experimental in Graal, use SerialGC instead "); |
c92949b1ec8a
-Changes after CR-243
Christos Kotselidis <christos.kotselidis@oracle.com>
parents:
8506
diff
changeset
|
2105 status = true; |
c92949b1ec8a
-Changes after CR-243
Christos Kotselidis <christos.kotselidis@oracle.com>
parents:
8506
diff
changeset
|
2106 } |
c92949b1ec8a
-Changes after CR-243
Christos Kotselidis <christos.kotselidis@oracle.com>
parents:
8506
diff
changeset
|
2107 } else { |
c92949b1ec8a
-Changes after CR-243
Christos Kotselidis <christos.kotselidis@oracle.com>
parents:
8506
diff
changeset
|
2108 // This prevents the flag being set to true by set_ergonomics_flags() |
c92949b1ec8a
-Changes after CR-243
Christos Kotselidis <christos.kotselidis@oracle.com>
parents:
8506
diff
changeset
|
2109 FLAG_SET_CMDLINE(bool, UseG1GC, false); |
c92949b1ec8a
-Changes after CR-243
Christos Kotselidis <christos.kotselidis@oracle.com>
parents:
8506
diff
changeset
|
2110 } |
6948
e522a00b91aa
Merge with http://hg.openjdk.java.net/hsx/hsx25/hotspot/ after NPG - C++ build works
Doug Simon <doug.simon@oracle.com>
diff
changeset
|
2111 |
e522a00b91aa
Merge with http://hg.openjdk.java.net/hsx/hsx25/hotspot/ after NPG - C++ build works
Doug Simon <doug.simon@oracle.com>
diff
changeset
|
2112 if (!ScavengeRootsInCode) { |
e522a00b91aa
Merge with http://hg.openjdk.java.net/hsx/hsx25/hotspot/ after NPG - C++ build works
Doug Simon <doug.simon@oracle.com>
diff
changeset
|
2113 warning("forcing ScavengeRootsInCode non-zero because Graal is enabled"); |
e522a00b91aa
Merge with http://hg.openjdk.java.net/hsx/hsx25/hotspot/ after NPG - C++ build works
Doug Simon <doug.simon@oracle.com>
diff
changeset
|
2114 ScavengeRootsInCode = 1; |
e522a00b91aa
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Doug Simon <doug.simon@oracle.com>
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2115 } |
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2116 |
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2117 #endif |
0 | 2118 return status; |
2119 } | |
2120 | |
2121 bool Arguments::is_bad_option(const JavaVMOption* option, jboolean ignore, | |
2122 const char* option_type) { | |
2123 if (ignore) return false; | |
2124 | |
2125 const char* spacer = " "; | |
2126 if (option_type == NULL) { | |
2127 option_type = ++spacer; // Set both to the empty string. | |
2128 } | |
2129 | |
2130 if (os::obsolete_option(option)) { | |
2131 jio_fprintf(defaultStream::error_stream(), | |
2132 "Obsolete %s%soption: %s\n", option_type, spacer, | |
2133 option->optionString); | |
2134 return false; | |
2135 } else { | |
2136 jio_fprintf(defaultStream::error_stream(), | |
2137 "Unrecognized %s%soption: %s\n", option_type, spacer, | |
2138 option->optionString); | |
2139 return true; | |
2140 } | |
2141 } | |
2142 | |
2143 static const char* user_assertion_options[] = { | |
2144 "-da", "-ea", "-disableassertions", "-enableassertions", 0 | |
2145 }; | |
2146 | |
2147 static const char* system_assertion_options[] = { | |
2148 "-dsa", "-esa", "-disablesystemassertions", "-enablesystemassertions", 0 | |
2149 }; | |
2150 | |
2151 // Return true if any of the strings in null-terminated array 'names' matches. | |
2152 // If tail_allowed is true, then the tail must begin with a colon; otherwise, | |
2153 // the option must match exactly. | |
2154 static bool match_option(const JavaVMOption* option, const char** names, const char** tail, | |
2155 bool tail_allowed) { | |
2156 for (/* empty */; *names != NULL; ++names) { | |
2157 if (match_option(option, *names, tail)) { | |
2158 if (**tail == '\0' || tail_allowed && **tail == ':') { | |
2159 return true; | |
2160 } | |
2161 } | |
2162 } | |
2163 return false; | |
2164 } | |
2165 | |
1284 | 2166 bool Arguments::parse_uintx(const char* value, |
2167 uintx* uintx_arg, | |
2168 uintx min_size) { | |
2169 | |
2170 // Check the sign first since atomull() parses only unsigned values. | |
2171 bool value_is_positive = !(*value == '-'); | |
2172 | |
2173 if (value_is_positive) { | |
2174 julong n; | |
2175 bool good_return = atomull(value, &n); | |
2176 if (good_return) { | |
2177 bool above_minimum = n >= min_size; | |
2178 bool value_is_too_large = n > max_uintx; | |
2179 | |
2180 if (above_minimum && !value_is_too_large) { | |
2181 *uintx_arg = n; | |
2182 return true; | |
2183 } | |
2184 } | |
2185 } | |
2186 return false; | |
2187 } | |
2188 | |
0 | 2189 Arguments::ArgsRange Arguments::parse_memory_size(const char* s, |
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2190 julong* long_arg, |
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2191 julong min_size) { |
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2192 if (!atomull(s, long_arg)) return arg_unreadable; |
0 | 2193 return check_memory_size(*long_arg, min_size); |
2194 } | |
2195 | |
2196 // Parse JavaVMInitArgs structure | |
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2197 |
0 | 2198 jint Arguments::parse_vm_init_args(const JavaVMInitArgs* args) { |
2199 // For components of the system classpath. | |
2200 SysClassPath scp(Arguments::get_sysclasspath()); | |
2201 bool scp_assembly_required = false; | |
2202 | |
2203 // Save default settings for some mode flags | |
2204 Arguments::_AlwaysCompileLoopMethods = AlwaysCompileLoopMethods; | |
2205 Arguments::_UseOnStackReplacement = UseOnStackReplacement; | |
2206 Arguments::_ClipInlining = ClipInlining; | |
2207 Arguments::_BackgroundCompilation = BackgroundCompilation; | |
2208 | |
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2209 // Setup flags for mixed which is the default |
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2210 set_mode_flags(_mixed); |
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2211 |
0 | 2212 // Parse JAVA_TOOL_OPTIONS environment variable (if present) |
2213 jint result = parse_java_tool_options_environment_variable(&scp, &scp_assembly_required); | |
2214 if (result != JNI_OK) { | |
2215 return result; | |
2216 } | |
2217 | |
2218 // Parse JavaVMInitArgs structure passed in | |
2219 result = parse_each_vm_init_arg(args, &scp, &scp_assembly_required, COMMAND_LINE); | |
2220 if (result != JNI_OK) { | |
2221 return result; | |
2222 } | |
2223 | |
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2224 if (AggressiveOpts) { |
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2225 // Insert alt-rt.jar between user-specified bootclasspath |
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2226 // prefix and the default bootclasspath. os::set_boot_path() |
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2227 // uses meta_index_dir as the default bootclasspath directory. |
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2228 const char* altclasses_jar = "alt-rt.jar"; |
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2229 size_t altclasses_path_len = strlen(get_meta_index_dir()) + 1 + |
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2230 strlen(altclasses_jar); |
6197 | 2231 char* altclasses_path = NEW_C_HEAP_ARRAY(char, altclasses_path_len, mtInternal); |
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2232 strcpy(altclasses_path, get_meta_index_dir()); |
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2233 strcat(altclasses_path, altclasses_jar); |
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2234 scp.add_suffix_to_prefix(altclasses_path); |
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2235 scp_assembly_required = true; |
6197 | 2236 FREE_C_HEAP_ARRAY(char, altclasses_path, mtInternal); |
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2237 } |
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2238 |
0 | 2239 // Parse _JAVA_OPTIONS environment variable (if present) (mimics classic VM) |
2240 result = parse_java_options_environment_variable(&scp, &scp_assembly_required); | |
2241 if (result != JNI_OK) { | |
2242 return result; | |
2243 } | |
2244 | |
2245 // Do final processing now that all arguments have been parsed | |
2246 result = finalize_vm_init_args(&scp, scp_assembly_required); | |
2247 if (result != JNI_OK) { | |
2248 return result; | |
2249 } | |
2250 | |
2251 return JNI_OK; | |
2252 } | |
2253 | |
2254 jint Arguments::parse_each_vm_init_arg(const JavaVMInitArgs* args, | |
2255 SysClassPath* scp_p, | |
2256 bool* scp_assembly_required_p, | |
2257 FlagValueOrigin origin) { | |
2258 // Remaining part of option string | |
2259 const char* tail; | |
2260 | |
2261 // iterate over arguments | |
2262 for (int index = 0; index < args->nOptions; index++) { | |
2263 bool is_absolute_path = false; // for -agentpath vs -agentlib | |
2264 | |
2265 const JavaVMOption* option = args->options + index; | |
2266 | |
2267 if (!match_option(option, "-Djava.class.path", &tail) && | |
2268 !match_option(option, "-Dsun.java.command", &tail) && | |
2269 !match_option(option, "-Dsun.java.launcher", &tail)) { | |
2270 | |
2271 // add all jvm options to the jvm_args string. This string | |
2272 // is used later to set the java.vm.args PerfData string constant. | |
2273 // the -Djava.class.path and the -Dsun.java.command options are | |
2274 // omitted from jvm_args string as each have their own PerfData | |
2275 // string constant object. | |
2276 build_jvm_args(option->optionString); | |
2277 } | |
2278 | |
2279 // -verbose:[class/gc/jni] | |
2280 if (match_option(option, "-verbose", &tail)) { | |
2281 if (!strcmp(tail, ":class") || !strcmp(tail, "")) { | |
2282 FLAG_SET_CMDLINE(bool, TraceClassLoading, true); | |
2283 FLAG_SET_CMDLINE(bool, TraceClassUnloading, true); | |
2284 } else if (!strcmp(tail, ":gc")) { | |
2285 FLAG_SET_CMDLINE(bool, PrintGC, true); | |
2286 } else if (!strcmp(tail, ":jni")) { | |
2287 FLAG_SET_CMDLINE(bool, PrintJNIResolving, true); | |
2288 } | |
2289 // -da / -ea / -disableassertions / -enableassertions | |
2290 // These accept an optional class/package name separated by a colon, e.g., | |
2291 // -da:java.lang.Thread. | |
2292 } else if (match_option(option, user_assertion_options, &tail, true)) { | |
2293 bool enable = option->optionString[1] == 'e'; // char after '-' is 'e' | |
2294 if (*tail == '\0') { | |
2295 JavaAssertions::setUserClassDefault(enable); | |
2296 } else { | |
2297 assert(*tail == ':', "bogus match by match_option()"); | |
2298 JavaAssertions::addOption(tail + 1, enable); | |
2299 } | |
2300 // -dsa / -esa / -disablesystemassertions / -enablesystemassertions | |
2301 } else if (match_option(option, system_assertion_options, &tail, false)) { | |
2302 bool enable = option->optionString[1] == 'e'; // char after '-' is 'e' | |
2303 JavaAssertions::setSystemClassDefault(enable); | |
2304 // -bootclasspath: | |
2305 } else if (match_option(option, "-Xbootclasspath:", &tail)) { | |
2306 scp_p->reset_path(tail); | |
2307 *scp_assembly_required_p = true; | |
2308 // -bootclasspath/a: | |
2309 } else if (match_option(option, "-Xbootclasspath/a:", &tail)) { | |
2310 scp_p->add_suffix(tail); | |
2311 *scp_assembly_required_p = true; | |
2312 // -bootclasspath/p: | |
2313 } else if (match_option(option, "-Xbootclasspath/p:", &tail)) { | |
2314 scp_p->add_prefix(tail); | |
2315 *scp_assembly_required_p = true; | |
2316 // -Xrun | |
2317 } else if (match_option(option, "-Xrun", &tail)) { | |
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2318 if (tail != NULL) { |
0 | 2319 const char* pos = strchr(tail, ':'); |
2320 size_t len = (pos == NULL) ? strlen(tail) : pos - tail; | |
6197 | 2321 char* name = (char*)memcpy(NEW_C_HEAP_ARRAY(char, len + 1, mtInternal), tail, len); |
0 | 2322 name[len] = '\0'; |
2323 | |
2324 char *options = NULL; | |
2325 if(pos != NULL) { | |
2326 size_t len2 = strlen(pos+1) + 1; // options start after ':'. Final zero must be copied. | |
6197 | 2327 options = (char*)memcpy(NEW_C_HEAP_ARRAY(char, len2, mtInternal), pos+1, len2); |
0 | 2328 } |
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2329 #if !INCLUDE_JVMTI |
0 | 2330 if ((strcmp(name, "hprof") == 0) || (strcmp(name, "jdwp") == 0)) { |
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2331 warning("profiling and debugging agents are not supported in this VM"); |
0 | 2332 } else |
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2333 #endif // !INCLUDE_JVMTI |
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2334 add_init_library(name, options); |
0 | 2335 } |
2336 // -agentlib and -agentpath | |
2337 } else if (match_option(option, "-agentlib:", &tail) || | |
2338 (is_absolute_path = match_option(option, "-agentpath:", &tail))) { | |
2339 if(tail != NULL) { | |
2340 const char* pos = strchr(tail, '='); | |
2341 size_t len = (pos == NULL) ? strlen(tail) : pos - tail; | |
6197 | 2342 char* name = strncpy(NEW_C_HEAP_ARRAY(char, len + 1, mtInternal), tail, len); |
0 | 2343 name[len] = '\0'; |
2344 | |
2345 char *options = NULL; | |
2346 if(pos != NULL) { | |
6197 | 2347 options = strcpy(NEW_C_HEAP_ARRAY(char, strlen(pos + 1) + 1, mtInternal), pos + 1); |
0 | 2348 } |
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2349 #if !INCLUDE_JVMTI |
0 | 2350 if ((strcmp(name, "hprof") == 0) || (strcmp(name, "jdwp") == 0)) { |
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2351 warning("profiling and debugging agents are not supported in this VM"); |
0 | 2352 } else |
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2353 #endif // !INCLUDE_JVMTI |
0 | 2354 add_init_agent(name, options, is_absolute_path); |
2355 | |
2356 } | |
2357 // -javaagent | |
2358 } else if (match_option(option, "-javaagent:", &tail)) { | |
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2359 #if !INCLUDE_JVMTI |
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2360 warning("Instrumentation agents are not supported in this VM"); |
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|
2361 #else |
0 | 2362 if(tail != NULL) { |
6197 | 2363 char *options = strcpy(NEW_C_HEAP_ARRAY(char, strlen(tail) + 1, mtInternal), tail); |
0 | 2364 add_init_agent("instrument", options, false); |
2365 } | |
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2366 #endif // !INCLUDE_JVMTI |
0 | 2367 // -Xnoclassgc |
2368 } else if (match_option(option, "-Xnoclassgc", &tail)) { | |
2369 FLAG_SET_CMDLINE(bool, ClassUnloading, false); | |
2370 // -Xincgc: i-CMS | |
2371 } else if (match_option(option, "-Xincgc", &tail)) { | |
2372 FLAG_SET_CMDLINE(bool, UseConcMarkSweepGC, true); | |
2373 FLAG_SET_CMDLINE(bool, CMSIncrementalMode, true); | |
2374 // -Xnoincgc: no i-CMS | |
2375 } else if (match_option(option, "-Xnoincgc", &tail)) { | |
2376 FLAG_SET_CMDLINE(bool, UseConcMarkSweepGC, false); | |
2377 FLAG_SET_CMDLINE(bool, CMSIncrementalMode, false); | |
2378 // -Xconcgc | |
2379 } else if (match_option(option, "-Xconcgc", &tail)) { | |
2380 FLAG_SET_CMDLINE(bool, UseConcMarkSweepGC, true); | |
2381 // -Xnoconcgc | |
2382 } else if (match_option(option, "-Xnoconcgc", &tail)) { | |
2383 FLAG_SET_CMDLINE(bool, UseConcMarkSweepGC, false); | |
2384 // -Xbatch | |
2385 } else if (match_option(option, "-Xbatch", &tail)) { | |
2386 FLAG_SET_CMDLINE(bool, BackgroundCompilation, false); | |
2387 // -Xmn for compatibility with other JVM vendors | |
2388 } else if (match_option(option, "-Xmn", &tail)) { | |
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2389 julong long_initial_eden_size = 0; |
0 | 2390 ArgsRange errcode = parse_memory_size(tail, &long_initial_eden_size, 1); |
2391 if (errcode != arg_in_range) { | |
2392 jio_fprintf(defaultStream::error_stream(), | |
2393 "Invalid initial eden size: %s\n", option->optionString); | |
2394 describe_range_error(errcode); | |
2395 return JNI_EINVAL; | |
2396 } | |
1064 | 2397 FLAG_SET_CMDLINE(uintx, MaxNewSize, (uintx)long_initial_eden_size); |
2398 FLAG_SET_CMDLINE(uintx, NewSize, (uintx)long_initial_eden_size); | |
0 | 2399 // -Xms |
2400 } else if (match_option(option, "-Xms", &tail)) { | |
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2401 julong long_initial_heap_size = 0; |
0 | 2402 ArgsRange errcode = parse_memory_size(tail, &long_initial_heap_size, 1); |
2403 if (errcode != arg_in_range) { | |
2404 jio_fprintf(defaultStream::error_stream(), | |
2405 "Invalid initial heap size: %s\n", option->optionString); | |
2406 describe_range_error(errcode); | |
2407 return JNI_EINVAL; | |
2408 } | |
1064 | 2409 FLAG_SET_CMDLINE(uintx, InitialHeapSize, (uintx)long_initial_heap_size); |
0 | 2410 // Currently the minimum size and the initial heap sizes are the same. |
1064 | 2411 set_min_heap_size(InitialHeapSize); |
0 | 2412 // -Xmx |
2413 } else if (match_option(option, "-Xmx", &tail)) { | |
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2414 julong long_max_heap_size = 0; |
0 | 2415 ArgsRange errcode = parse_memory_size(tail, &long_max_heap_size, 1); |
2416 if (errcode != arg_in_range) { | |
2417 jio_fprintf(defaultStream::error_stream(), | |
2418 "Invalid maximum heap size: %s\n", option->optionString); | |
2419 describe_range_error(errcode); | |
2420 return JNI_EINVAL; | |
2421 } | |
1064 | 2422 FLAG_SET_CMDLINE(uintx, MaxHeapSize, (uintx)long_max_heap_size); |
0 | 2423 // Xmaxf |
2424 } else if (match_option(option, "-Xmaxf", &tail)) { | |
2425 int maxf = (int)(atof(tail) * 100); | |
2426 if (maxf < 0 || maxf > 100) { | |
2427 jio_fprintf(defaultStream::error_stream(), | |
2428 "Bad max heap free percentage size: %s\n", | |
2429 option->optionString); | |
2430 return JNI_EINVAL; | |
2431 } else { | |
2432 FLAG_SET_CMDLINE(uintx, MaxHeapFreeRatio, maxf); | |
2433 } | |
2434 // Xminf | |
2435 } else if (match_option(option, "-Xminf", &tail)) { | |
2436 int minf = (int)(atof(tail) * 100); | |
2437 if (minf < 0 || minf > 100) { | |
2438 jio_fprintf(defaultStream::error_stream(), | |
2439 "Bad min heap free percentage size: %s\n", | |
2440 option->optionString); | |
2441 return JNI_EINVAL; | |
2442 } else { | |
2443 FLAG_SET_CMDLINE(uintx, MinHeapFreeRatio, minf); | |
2444 } | |
2445 // -Xss | |
2446 } else if (match_option(option, "-Xss", &tail)) { | |
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2447 julong long_ThreadStackSize = 0; |
0 | 2448 ArgsRange errcode = parse_memory_size(tail, &long_ThreadStackSize, 1000); |
2449 if (errcode != arg_in_range) { | |
2450 jio_fprintf(defaultStream::error_stream(), | |
2451 "Invalid thread stack size: %s\n", option->optionString); | |
2452 describe_range_error(errcode); | |
2453 return JNI_EINVAL; | |
2454 } | |
2455 // Internally track ThreadStackSize in units of 1024 bytes. | |
2456 FLAG_SET_CMDLINE(intx, ThreadStackSize, | |
2457 round_to((int)long_ThreadStackSize, K) / K); | |
2458 // -Xoss | |
2459 } else if (match_option(option, "-Xoss", &tail)) { | |
2460 // HotSpot does not have separate native and Java stacks, ignore silently for compatibility | |
2461 // -Xmaxjitcodesize | |
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|
2462 } else if (match_option(option, "-Xmaxjitcodesize", &tail) || |
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|
2463 match_option(option, "-XX:ReservedCodeCacheSize=", &tail)) { |
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|
2464 julong long_ReservedCodeCacheSize = 0; |
0 | 2465 ArgsRange errcode = parse_memory_size(tail, &long_ReservedCodeCacheSize, |
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2466 (size_t)InitialCodeCacheSize); |
0 | 2467 if (errcode != arg_in_range) { |
2468 jio_fprintf(defaultStream::error_stream(), | |
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2469 "Invalid maximum code cache size: %s. Should be greater than InitialCodeCacheSize=%dK\n", |
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2470 option->optionString, InitialCodeCacheSize/K); |
0 | 2471 describe_range_error(errcode); |
2472 return JNI_EINVAL; | |
2473 } | |
2474 FLAG_SET_CMDLINE(uintx, ReservedCodeCacheSize, (uintx)long_ReservedCodeCacheSize); | |
2475 // -green | |
2476 } else if (match_option(option, "-green", &tail)) { | |
2477 jio_fprintf(defaultStream::error_stream(), | |
2478 "Green threads support not available\n"); | |
2479 return JNI_EINVAL; | |
2480 // -native | |
2481 } else if (match_option(option, "-native", &tail)) { | |
2482 // HotSpot always uses native threads, ignore silently for compatibility | |
2483 // -Xsqnopause | |
2484 } else if (match_option(option, "-Xsqnopause", &tail)) { | |
2485 // EVM option, ignore silently for compatibility | |
2486 // -Xrs | |
2487 } else if (match_option(option, "-Xrs", &tail)) { | |
2488 // Classic/EVM option, new functionality | |
2489 FLAG_SET_CMDLINE(bool, ReduceSignalUsage, true); | |
2490 } else if (match_option(option, "-Xusealtsigs", &tail)) { | |
2491 // change default internal VM signals used - lower case for back compat | |
2492 FLAG_SET_CMDLINE(bool, UseAltSigs, true); | |
2493 // -Xoptimize | |
2494 } else if (match_option(option, "-Xoptimize", &tail)) { | |
2495 // EVM option, ignore silently for compatibility | |
2496 // -Xprof | |
2497 } else if (match_option(option, "-Xprof", &tail)) { | |
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2498 #if INCLUDE_FPROF |
0 | 2499 _has_profile = true; |
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2500 #else // INCLUDE_FPROF |
0 | 2501 // do we have to exit? |
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2502 warning("Flat profiling is not supported in this VM."); |
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2503 #endif // INCLUDE_FPROF |
0 | 2504 // -Xaprof |
2505 } else if (match_option(option, "-Xaprof", &tail)) { | |
2506 _has_alloc_profile = true; | |
2507 // -Xconcurrentio | |
2508 } else if (match_option(option, "-Xconcurrentio", &tail)) { | |
2509 FLAG_SET_CMDLINE(bool, UseLWPSynchronization, true); | |
2510 FLAG_SET_CMDLINE(bool, BackgroundCompilation, false); | |
2511 FLAG_SET_CMDLINE(intx, DeferThrSuspendLoopCount, 1); | |
2512 FLAG_SET_CMDLINE(bool, UseTLAB, false); | |
2513 FLAG_SET_CMDLINE(uintx, NewSizeThreadIncrease, 16 * K); // 20Kb per thread added to new generation | |
2514 | |
2515 // -Xinternalversion | |
2516 } else if (match_option(option, "-Xinternalversion", &tail)) { | |
2517 jio_fprintf(defaultStream::output_stream(), "%s\n", | |
2518 VM_Version::internal_vm_info_string()); | |
2519 vm_exit(0); | |
2520 #ifndef PRODUCT | |
2521 // -Xprintflags | |
2522 } else if (match_option(option, "-Xprintflags", &tail)) { | |
4773 | 2523 CommandLineFlags::printFlags(tty, false); |
0 | 2524 vm_exit(0); |
2525 #endif | |
2526 // -D | |
2527 } else if (match_option(option, "-D", &tail)) { | |
2528 if (!add_property(tail)) { | |
2529 return JNI_ENOMEM; | |
2530 } | |
2531 // Out of the box management support | |
2532 if (match_option(option, "-Dcom.sun.management", &tail)) { | |
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2533 #if INCLUDE_MANAGEMENT |
0 | 2534 FLAG_SET_CMDLINE(bool, ManagementServer, true); |
8081
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2535 #else |
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2536 vm_exit_during_initialization( |
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2537 "-Dcom.sun.management is not supported in this VM.", NULL); |
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2538 #endif |
0 | 2539 } |
2540 // -Xint | |
2541 } else if (match_option(option, "-Xint", &tail)) { | |
2542 set_mode_flags(_int); | |
2543 // -Xmixed | |
2544 } else if (match_option(option, "-Xmixed", &tail)) { | |
2545 set_mode_flags(_mixed); | |
2546 // -Xcomp | |
2547 } else if (match_option(option, "-Xcomp", &tail)) { | |
2548 // for testing the compiler; turn off all flags that inhibit compilation | |
2549 set_mode_flags(_comp); | |
2550 | |
2551 // -Xshare:dump | |
2552 } else if (match_option(option, "-Xshare:dump", &tail)) { | |
7951 | 2553 #if !INCLUDE_CDS |
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2554 vm_exit_during_initialization( |
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2555 "Dumping a shared archive is not supported in this VM.", NULL); |
0 | 2556 #else |
2557 FLAG_SET_CMDLINE(bool, DumpSharedSpaces, true); | |
2558 set_mode_flags(_int); // Prevent compilation, which creates objects | |
2559 #endif | |
2560 // -Xshare:on | |
2561 } else if (match_option(option, "-Xshare:on", &tail)) { | |
2562 FLAG_SET_CMDLINE(bool, UseSharedSpaces, true); | |
2563 FLAG_SET_CMDLINE(bool, RequireSharedSpaces, true); | |
2564 // -Xshare:auto | |
2565 } else if (match_option(option, "-Xshare:auto", &tail)) { | |
2566 FLAG_SET_CMDLINE(bool, UseSharedSpaces, true); | |
2567 FLAG_SET_CMDLINE(bool, RequireSharedSpaces, false); | |
2568 // -Xshare:off | |
2569 } else if (match_option(option, "-Xshare:off", &tail)) { | |
2570 FLAG_SET_CMDLINE(bool, UseSharedSpaces, false); | |
2571 FLAG_SET_CMDLINE(bool, RequireSharedSpaces, false); | |
2572 | |
2573 // -Xverify | |
2574 } else if (match_option(option, "-Xverify", &tail)) { | |
2575 if (strcmp(tail, ":all") == 0 || strcmp(tail, "") == 0) { | |
2576 FLAG_SET_CMDLINE(bool, BytecodeVerificationLocal, true); | |
2577 FLAG_SET_CMDLINE(bool, BytecodeVerificationRemote, true); | |
2578 } else if (strcmp(tail, ":remote") == 0) { | |
2579 FLAG_SET_CMDLINE(bool, BytecodeVerificationLocal, false); | |
2580 FLAG_SET_CMDLINE(bool, BytecodeVerificationRemote, true); | |
2581 } else if (strcmp(tail, ":none") == 0) { | |
2582 FLAG_SET_CMDLINE(bool, BytecodeVerificationLocal, false); | |
2583 FLAG_SET_CMDLINE(bool, BytecodeVerificationRemote, false); | |
2584 } else if (is_bad_option(option, args->ignoreUnrecognized, "verification")) { | |
2585 return JNI_EINVAL; | |
2586 } | |
2587 // -Xdebug | |
2588 } else if (match_option(option, "-Xdebug", &tail)) { | |
2589 // note this flag has been used, then ignore | |
2590 set_xdebug_mode(true); | |
2591 // -Xnoagent | |
2592 } else if (match_option(option, "-Xnoagent", &tail)) { | |
2593 // For compatibility with classic. HotSpot refuses to load the old style agent.dll. | |
2594 } else if (match_option(option, "-Xboundthreads", &tail)) { | |
2595 // Bind user level threads to kernel threads (Solaris only) | |
2596 FLAG_SET_CMDLINE(bool, UseBoundThreads, true); | |
2597 } else if (match_option(option, "-Xloggc:", &tail)) { | |
2598 // Redirect GC output to the file. -Xloggc:<filename> | |
2599 // ostream_init_log(), when called will use this filename | |
2600 // to initialize a fileStream. | |
2601 _gc_log_filename = strdup(tail); | |
2602 FLAG_SET_CMDLINE(bool, PrintGC, true); | |
2603 FLAG_SET_CMDLINE(bool, PrintGCTimeStamps, true); | |
2604 | |
2605 // JNI hooks | |
2606 } else if (match_option(option, "-Xcheck", &tail)) { | |
2607 if (!strcmp(tail, ":jni")) { | |
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2608 #if !INCLUDE_JNI_CHECK |
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2609 warning("JNI CHECKING is not supported in this VM"); |
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2610 #else |
0 | 2611 CheckJNICalls = true; |
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2612 #endif // INCLUDE_JNI_CHECK |
0 | 2613 } else if (is_bad_option(option, args->ignoreUnrecognized, |
2614 "check")) { | |
2615 return JNI_EINVAL; | |
2616 } | |
2617 } else if (match_option(option, "vfprintf", &tail)) { | |
2618 _vfprintf_hook = CAST_TO_FN_PTR(vfprintf_hook_t, option->extraInfo); | |
2619 } else if (match_option(option, "exit", &tail)) { | |
2620 _exit_hook = CAST_TO_FN_PTR(exit_hook_t, option->extraInfo); | |
2621 } else if (match_option(option, "abort", &tail)) { | |
2622 _abort_hook = CAST_TO_FN_PTR(abort_hook_t, option->extraInfo); | |
2623 // -XX:+AggressiveHeap | |
2624 } else if (match_option(option, "-XX:+AggressiveHeap", &tail)) { | |
2625 | |
2626 // This option inspects the machine and attempts to set various | |
2627 // parameters to be optimal for long-running, memory allocation | |
2628 // intensive jobs. It is intended for machines with large | |
2629 // amounts of cpu and memory. | |
2630 | |
2631 // initHeapSize is needed since _initial_heap_size is 4 bytes on a 32 bit | |
2632 // VM, but we may not be able to represent the total physical memory | |
2633 // available (like having 8gb of memory on a box but using a 32bit VM). | |
2634 // Thus, we need to make sure we're using a julong for intermediate | |
2635 // calculations. | |
2636 julong initHeapSize; | |
2637 julong total_memory = os::physical_memory(); | |
2638 | |
2639 if (total_memory < (julong)256*M) { | |
2640 jio_fprintf(defaultStream::error_stream(), | |
2641 "You need at least 256mb of memory to use -XX:+AggressiveHeap\n"); | |
2642 vm_exit(1); | |
2643 } | |
2644 | |
2645 // The heap size is half of available memory, or (at most) | |
2646 // all of possible memory less 160mb (leaving room for the OS | |
2647 // when using ISM). This is the maximum; because adaptive sizing | |
2648 // is turned on below, the actual space used may be smaller. | |
2649 | |
2650 initHeapSize = MIN2(total_memory / (julong)2, | |
2651 total_memory - (julong)160*M); | |
2652 | |
2653 // Make sure that if we have a lot of memory we cap the 32 bit | |
2654 // process space. The 64bit VM version of this function is a nop. | |
2655 initHeapSize = os::allocatable_physical_memory(initHeapSize); | |
2656 | |
2657 if (FLAG_IS_DEFAULT(MaxHeapSize)) { | |
2658 FLAG_SET_CMDLINE(uintx, MaxHeapSize, initHeapSize); | |
1064 | 2659 FLAG_SET_CMDLINE(uintx, InitialHeapSize, initHeapSize); |
0 | 2660 // Currently the minimum size and the initial heap sizes are the same. |
1064 | 2661 set_min_heap_size(initHeapSize); |
0 | 2662 } |
2663 if (FLAG_IS_DEFAULT(NewSize)) { | |
2664 // Make the young generation 3/8ths of the total heap. | |
2665 FLAG_SET_CMDLINE(uintx, NewSize, | |
2666 ((julong)MaxHeapSize / (julong)8) * (julong)3); | |
2667 FLAG_SET_CMDLINE(uintx, MaxNewSize, NewSize); | |
2668 } | |
2669 | |
6917
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2670 #ifndef _ALLBSD_SOURCE // UseLargePages is not yet supported on BSD. |
0 | 2671 FLAG_SET_DEFAULT(UseLargePages, true); |
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2672 #endif |
0 | 2673 |
2674 // Increase some data structure sizes for efficiency | |
2675 FLAG_SET_CMDLINE(uintx, BaseFootPrintEstimate, MaxHeapSize); | |
2676 FLAG_SET_CMDLINE(bool, ResizeTLAB, false); | |
2677 FLAG_SET_CMDLINE(uintx, TLABSize, 256*K); | |
2678 | |
2679 // See the OldPLABSize comment below, but replace 'after promotion' | |
2680 // with 'after copying'. YoungPLABSize is the size of the survivor | |
2681 // space per-gc-thread buffers. The default is 4kw. | |
2682 FLAG_SET_CMDLINE(uintx, YoungPLABSize, 256*K); // Note: this is in words | |
2683 | |
2684 // OldPLABSize is the size of the buffers in the old gen that | |
2685 // UseParallelGC uses to promote live data that doesn't fit in the | |
2686 // survivor spaces. At any given time, there's one for each gc thread. | |
2687 // The default size is 1kw. These buffers are rarely used, since the | |
2688 // survivor spaces are usually big enough. For specjbb, however, there | |
2689 // are occasions when there's lots of live data in the young gen | |
2690 // and we end up promoting some of it. We don't have a definite | |
2691 // explanation for why bumping OldPLABSize helps, but the theory | |
2692 // is that a bigger PLAB results in retaining something like the | |
2693 // original allocation order after promotion, which improves mutator | |
2694 // locality. A minor effect may be that larger PLABs reduce the | |
2695 // number of PLAB allocation events during gc. The value of 8kw | |
2696 // was arrived at by experimenting with specjbb. | |
2697 FLAG_SET_CMDLINE(uintx, OldPLABSize, 8*K); // Note: this is in words | |
2698 | |
2699 // Enable parallel GC and adaptive generation sizing | |
2700 FLAG_SET_CMDLINE(bool, UseParallelGC, true); | |
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2701 FLAG_SET_DEFAULT(ParallelGCThreads, |
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2702 Abstract_VM_Version::parallel_worker_threads()); |
0 | 2703 |
2704 // Encourage steady state memory management | |
2705 FLAG_SET_CMDLINE(uintx, ThresholdTolerance, 100); | |
2706 | |
2707 // This appears to improve mutator locality | |
2708 FLAG_SET_CMDLINE(bool, ScavengeBeforeFullGC, false); | |
2709 | |
2710 // Get around early Solaris scheduling bug | |
2711 // (affinity vs other jobs on system) | |
2712 // but disallow DR and offlining (5008695). | |
2713 FLAG_SET_CMDLINE(bool, BindGCTaskThreadsToCPUs, true); | |
2714 | |
2715 } else if (match_option(option, "-XX:+NeverTenure", &tail)) { | |
2716 // The last option must always win. | |
2717 FLAG_SET_CMDLINE(bool, AlwaysTenure, false); | |
2718 FLAG_SET_CMDLINE(bool, NeverTenure, true); | |
2719 } else if (match_option(option, "-XX:+AlwaysTenure", &tail)) { | |
2720 // The last option must always win. | |
2721 FLAG_SET_CMDLINE(bool, NeverTenure, false); | |
2722 FLAG_SET_CMDLINE(bool, AlwaysTenure, true); | |
2723 } else if (match_option(option, "-XX:+CMSPermGenSweepingEnabled", &tail) || | |
2724 match_option(option, "-XX:-CMSPermGenSweepingEnabled", &tail)) { | |
2725 jio_fprintf(defaultStream::error_stream(), | |
2726 "Please use CMSClassUnloadingEnabled in place of " | |
2727 "CMSPermGenSweepingEnabled in the future\n"); | |
2728 } else if (match_option(option, "-XX:+UseGCTimeLimit", &tail)) { | |
2729 FLAG_SET_CMDLINE(bool, UseGCOverheadLimit, true); | |
2730 jio_fprintf(defaultStream::error_stream(), | |
2731 "Please use -XX:+UseGCOverheadLimit in place of " | |
2732 "-XX:+UseGCTimeLimit in the future\n"); | |
2733 } else if (match_option(option, "-XX:-UseGCTimeLimit", &tail)) { | |
2734 FLAG_SET_CMDLINE(bool, UseGCOverheadLimit, false); | |
2735 jio_fprintf(defaultStream::error_stream(), | |
2736 "Please use -XX:-UseGCOverheadLimit in place of " | |
2737 "-XX:-UseGCTimeLimit in the future\n"); | |
2738 // The TLE options are for compatibility with 1.3 and will be | |
2739 // removed without notice in a future release. These options | |
2740 // are not to be documented. | |
2741 } else if (match_option(option, "-XX:MaxTLERatio=", &tail)) { | |
2742 // No longer used. | |
2743 } else if (match_option(option, "-XX:+ResizeTLE", &tail)) { | |
2744 FLAG_SET_CMDLINE(bool, ResizeTLAB, true); | |
2745 } else if (match_option(option, "-XX:-ResizeTLE", &tail)) { | |
2746 FLAG_SET_CMDLINE(bool, ResizeTLAB, false); | |
2747 } else if (match_option(option, "-XX:+PrintTLE", &tail)) { | |
2748 FLAG_SET_CMDLINE(bool, PrintTLAB, true); | |
2749 } else if (match_option(option, "-XX:-PrintTLE", &tail)) { | |
2750 FLAG_SET_CMDLINE(bool, PrintTLAB, false); | |
2751 } else if (match_option(option, "-XX:TLEFragmentationRatio=", &tail)) { | |
2752 // No longer used. | |
2753 } else if (match_option(option, "-XX:TLESize=", &tail)) { | |
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2754 julong long_tlab_size = 0; |
0 | 2755 ArgsRange errcode = parse_memory_size(tail, &long_tlab_size, 1); |
2756 if (errcode != arg_in_range) { | |
2757 jio_fprintf(defaultStream::error_stream(), | |
2758 "Invalid TLAB size: %s\n", option->optionString); | |
2759 describe_range_error(errcode); | |
2760 return JNI_EINVAL; | |
2761 } | |
2762 FLAG_SET_CMDLINE(uintx, TLABSize, long_tlab_size); | |
2763 } else if (match_option(option, "-XX:TLEThreadRatio=", &tail)) { | |
2764 // No longer used. | |
2765 } else if (match_option(option, "-XX:+UseTLE", &tail)) { | |
2766 FLAG_SET_CMDLINE(bool, UseTLAB, true); | |
2767 } else if (match_option(option, "-XX:-UseTLE", &tail)) { | |
2768 FLAG_SET_CMDLINE(bool, UseTLAB, false); | |
2769 SOLARIS_ONLY( | |
2770 } else if (match_option(option, "-XX:+UsePermISM", &tail)) { | |
2771 warning("-XX:+UsePermISM is obsolete."); | |
2772 FLAG_SET_CMDLINE(bool, UseISM, true); | |
2773 } else if (match_option(option, "-XX:-UsePermISM", &tail)) { | |
2774 FLAG_SET_CMDLINE(bool, UseISM, false); | |
2775 ) | |
2776 } else if (match_option(option, "-XX:+DisplayVMOutputToStderr", &tail)) { | |
2777 FLAG_SET_CMDLINE(bool, DisplayVMOutputToStdout, false); | |
2778 FLAG_SET_CMDLINE(bool, DisplayVMOutputToStderr, true); | |
2779 } else if (match_option(option, "-XX:+DisplayVMOutputToStdout", &tail)) { | |
2780 FLAG_SET_CMDLINE(bool, DisplayVMOutputToStderr, false); | |
2781 FLAG_SET_CMDLINE(bool, DisplayVMOutputToStdout, true); | |
2782 } else if (match_option(option, "-XX:+ExtendedDTraceProbes", &tail)) { | |
4006 | 2783 #if defined(DTRACE_ENABLED) |
0 | 2784 FLAG_SET_CMDLINE(bool, ExtendedDTraceProbes, true); |
2785 FLAG_SET_CMDLINE(bool, DTraceMethodProbes, true); | |
2786 FLAG_SET_CMDLINE(bool, DTraceAllocProbes, true); | |
2787 FLAG_SET_CMDLINE(bool, DTraceMonitorProbes, true); | |
4006 | 2788 #else // defined(DTRACE_ENABLED) |
0 | 2789 jio_fprintf(defaultStream::error_stream(), |
4006 | 2790 "ExtendedDTraceProbes flag is not applicable for this configuration\n"); |
0 | 2791 return JNI_EINVAL; |
4006 | 2792 #endif // defined(DTRACE_ENABLED) |
0 | 2793 #ifdef ASSERT |
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2794 } else if (match_option(option, "-XX:+FullGCALot", &tail)) { |
0 | 2795 FLAG_SET_CMDLINE(bool, FullGCALot, true); |
2796 // disable scavenge before parallel mark-compact | |
2797 FLAG_SET_CMDLINE(bool, ScavengeBeforeFullGC, false); | |
2798 #endif | |
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2799 } else if (match_option(option, "-XX:CMSParPromoteBlocksToClaim=", &tail)) { |
0 | 2800 julong cms_blocks_to_claim = (julong)atol(tail); |
2801 FLAG_SET_CMDLINE(uintx, CMSParPromoteBlocksToClaim, cms_blocks_to_claim); | |
2802 jio_fprintf(defaultStream::error_stream(), | |
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2803 "Please use -XX:OldPLABSize in place of " |
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2804 "-XX:CMSParPromoteBlocksToClaim in the future\n"); |
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2805 } else if (match_option(option, "-XX:ParCMSPromoteBlocksToClaim=", &tail)) { |
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|
2806 julong cms_blocks_to_claim = (julong)atol(tail); |
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|
2807 FLAG_SET_CMDLINE(uintx, CMSParPromoteBlocksToClaim, cms_blocks_to_claim); |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1074
diff
changeset
|
2808 jio_fprintf(defaultStream::error_stream(), |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1074
diff
changeset
|
2809 "Please use -XX:OldPLABSize in place of " |
0 | 2810 "-XX:ParCMSPromoteBlocksToClaim in the future\n"); |
1145
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1074
diff
changeset
|
2811 } else if (match_option(option, "-XX:ParallelGCOldGenAllocBufferSize=", &tail)) { |
489
2494ab195856
6653214: MemoryPoolMXBean.setUsageThreshold() does not support large heap sizes.
swamyv
parents:
483
diff
changeset
|
2812 julong old_plab_size = 0; |
0 | 2813 ArgsRange errcode = parse_memory_size(tail, &old_plab_size, 1); |
2814 if (errcode != arg_in_range) { | |
2815 jio_fprintf(defaultStream::error_stream(), | |
2816 "Invalid old PLAB size: %s\n", option->optionString); | |
2817 describe_range_error(errcode); | |
2818 return JNI_EINVAL; | |
2819 } | |
489
2494ab195856
6653214: MemoryPoolMXBean.setUsageThreshold() does not support large heap sizes.
swamyv
parents:
483
diff
changeset
|
2820 FLAG_SET_CMDLINE(uintx, OldPLABSize, old_plab_size); |
0 | 2821 jio_fprintf(defaultStream::error_stream(), |
2822 "Please use -XX:OldPLABSize in place of " | |
2823 "-XX:ParallelGCOldGenAllocBufferSize in the future\n"); | |
1145
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1074
diff
changeset
|
2824 } else if (match_option(option, "-XX:ParallelGCToSpaceAllocBufferSize=", &tail)) { |
489
2494ab195856
6653214: MemoryPoolMXBean.setUsageThreshold() does not support large heap sizes.
swamyv
parents:
483
diff
changeset
|
2825 julong young_plab_size = 0; |
0 | 2826 ArgsRange errcode = parse_memory_size(tail, &young_plab_size, 1); |
2827 if (errcode != arg_in_range) { | |
2828 jio_fprintf(defaultStream::error_stream(), | |
2829 "Invalid young PLAB size: %s\n", option->optionString); | |
2830 describe_range_error(errcode); | |
2831 return JNI_EINVAL; | |
2832 } | |
489
2494ab195856
6653214: MemoryPoolMXBean.setUsageThreshold() does not support large heap sizes.
swamyv
parents:
483
diff
changeset
|
2833 FLAG_SET_CMDLINE(uintx, YoungPLABSize, young_plab_size); |
0 | 2834 jio_fprintf(defaultStream::error_stream(), |
2835 "Please use -XX:YoungPLABSize in place of " | |
2836 "-XX:ParallelGCToSpaceAllocBufferSize in the future\n"); | |
1284 | 2837 } else if (match_option(option, "-XX:CMSMarkStackSize=", &tail) || |
2838 match_option(option, "-XX:G1MarkStackSize=", &tail)) { | |
2839 julong stack_size = 0; | |
2840 ArgsRange errcode = parse_memory_size(tail, &stack_size, 1); | |
2841 if (errcode != arg_in_range) { | |
2842 jio_fprintf(defaultStream::error_stream(), | |
2843 "Invalid mark stack size: %s\n", option->optionString); | |
2844 describe_range_error(errcode); | |
2845 return JNI_EINVAL; | |
2846 } | |
2847 FLAG_SET_CMDLINE(uintx, MarkStackSize, stack_size); | |
2848 } else if (match_option(option, "-XX:CMSMarkStackSizeMax=", &tail)) { | |
2849 julong max_stack_size = 0; | |
2850 ArgsRange errcode = parse_memory_size(tail, &max_stack_size, 1); | |
2851 if (errcode != arg_in_range) { | |
2852 jio_fprintf(defaultStream::error_stream(), | |
2853 "Invalid maximum mark stack size: %s\n", | |
2854 option->optionString); | |
2855 describe_range_error(errcode); | |
2856 return JNI_EINVAL; | |
2857 } | |
2858 FLAG_SET_CMDLINE(uintx, MarkStackSizeMax, max_stack_size); | |
2859 } else if (match_option(option, "-XX:ParallelMarkingThreads=", &tail) || | |
2860 match_option(option, "-XX:ParallelCMSThreads=", &tail)) { | |
2861 uintx conc_threads = 0; | |
2862 if (!parse_uintx(tail, &conc_threads, 1)) { | |
2863 jio_fprintf(defaultStream::error_stream(), | |
2864 "Invalid concurrent threads: %s\n", option->optionString); | |
2865 return JNI_EINVAL; | |
2866 } | |
2867 FLAG_SET_CMDLINE(uintx, ConcGCThreads, conc_threads); | |
6199
3f1ab0c19c30
7179383: MaxDirectMemorySize argument parsing is broken for values >2G
dholmes
parents:
6198
diff
changeset
|
2868 } else if (match_option(option, "-XX:MaxDirectMemorySize=", &tail)) { |
3f1ab0c19c30
7179383: MaxDirectMemorySize argument parsing is broken for values >2G
dholmes
parents:
6198
diff
changeset
|
2869 julong max_direct_memory_size = 0; |
3f1ab0c19c30
7179383: MaxDirectMemorySize argument parsing is broken for values >2G
dholmes
parents:
6198
diff
changeset
|
2870 ArgsRange errcode = parse_memory_size(tail, &max_direct_memory_size, 0); |
3f1ab0c19c30
7179383: MaxDirectMemorySize argument parsing is broken for values >2G
dholmes
parents:
6198
diff
changeset
|
2871 if (errcode != arg_in_range) { |
3f1ab0c19c30
7179383: MaxDirectMemorySize argument parsing is broken for values >2G
dholmes
parents:
6198
diff
changeset
|
2872 jio_fprintf(defaultStream::error_stream(), |
3f1ab0c19c30
7179383: MaxDirectMemorySize argument parsing is broken for values >2G
dholmes
parents:
6198
diff
changeset
|
2873 "Invalid maximum direct memory size: %s\n", |
3f1ab0c19c30
7179383: MaxDirectMemorySize argument parsing is broken for values >2G
dholmes
parents:
6198
diff
changeset
|
2874 option->optionString); |
3f1ab0c19c30
7179383: MaxDirectMemorySize argument parsing is broken for values >2G
dholmes
parents:
6198
diff
changeset
|
2875 describe_range_error(errcode); |
3f1ab0c19c30
7179383: MaxDirectMemorySize argument parsing is broken for values >2G
dholmes
parents:
6198
diff
changeset
|
2876 return JNI_EINVAL; |
3f1ab0c19c30
7179383: MaxDirectMemorySize argument parsing is broken for values >2G
dholmes
parents:
6198
diff
changeset
|
2877 } |
3f1ab0c19c30
7179383: MaxDirectMemorySize argument parsing is broken for values >2G
dholmes
parents:
6198
diff
changeset
|
2878 FLAG_SET_CMDLINE(uintx, MaxDirectMemorySize, max_direct_memory_size); |
6878
85916677fc22
7188233: UseVMInterruptibleIO flag deprecate for JDK8
coleenp
parents:
6857
diff
changeset
|
2879 } else if (match_option(option, "-XX:+UseVMInterruptibleIO", &tail)) { |
85916677fc22
7188233: UseVMInterruptibleIO flag deprecate for JDK8
coleenp
parents:
6857
diff
changeset
|
2880 // NOTE! In JDK 9, the UseVMInterruptibleIO flag will completely go |
85916677fc22
7188233: UseVMInterruptibleIO flag deprecate for JDK8
coleenp
parents:
6857
diff
changeset
|
2881 // away and will cause VM initialization failures! |
85916677fc22
7188233: UseVMInterruptibleIO flag deprecate for JDK8
coleenp
parents:
6857
diff
changeset
|
2882 warning("-XX:+UseVMInterruptibleIO is obsolete and will be removed in a future release."); |
85916677fc22
7188233: UseVMInterruptibleIO flag deprecate for JDK8
coleenp
parents:
6857
diff
changeset
|
2883 FLAG_SET_CMDLINE(bool, UseVMInterruptibleIO, true); |
8081
579f6adb7f51
8003539: Minimal VM don't react to -Dcom.sun.management and -XX:+ManagementServer
jprovino
parents:
8002
diff
changeset
|
2884 #if !INCLUDE_MANAGEMENT |
579f6adb7f51
8003539: Minimal VM don't react to -Dcom.sun.management and -XX:+ManagementServer
jprovino
parents:
8002
diff
changeset
|
2885 } else if (match_option(option, "-XX:+ManagementServer", &tail)) { |
579f6adb7f51
8003539: Minimal VM don't react to -Dcom.sun.management and -XX:+ManagementServer
jprovino
parents:
8002
diff
changeset
|
2886 vm_exit_during_initialization( |
579f6adb7f51
8003539: Minimal VM don't react to -Dcom.sun.management and -XX:+ManagementServer
jprovino
parents:
8002
diff
changeset
|
2887 "ManagementServer is not supported in this VM.", NULL); |
579f6adb7f51
8003539: Minimal VM don't react to -Dcom.sun.management and -XX:+ManagementServer
jprovino
parents:
8002
diff
changeset
|
2888 #endif // INCLUDE_MANAGEMENT |
1145
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1074
diff
changeset
|
2889 } else if (match_option(option, "-XX:", &tail)) { // -XX:xxxx |
0 | 2890 // Skip -XX:Flags= since that case has already been handled |
2891 if (strncmp(tail, "Flags=", strlen("Flags=")) != 0) { | |
2892 if (!process_argument(tail, args->ignoreUnrecognized, origin)) { | |
2893 return JNI_EINVAL; | |
2894 } | |
2895 } | |
4559
723df37192d6
Make it possible again to build a real client libjvm, drop the UseGraal flag.
Gilles Duboscq <duboscq@ssw.jku.at>
parents:
4350
diff
changeset
|
2896 } |
723df37192d6
Make it possible again to build a real client libjvm, drop the UseGraal flag.
Gilles Duboscq <duboscq@ssw.jku.at>
parents:
4350
diff
changeset
|
2897 #ifdef GRAAL |
723df37192d6
Make it possible again to build a real client libjvm, drop the UseGraal flag.
Gilles Duboscq <duboscq@ssw.jku.at>
parents:
4350
diff
changeset
|
2898 else if (match_option(option, "-G:", &tail)) { // -G:XXX |
7125
1baf7f1e3f23
decoupled C++ Graal runtime from C1
Doug Simon <doug.simon@oracle.com>
parents:
7066
diff
changeset
|
2899 // Option for the Graal compiler. |
1437
9e5e83ca2259
Enabled -C1X:OPTIONS when running HotSpot/C1X. Enabled checkstyle for the HotSpotVM Java project.
Thomas Wuerthinger <wuerthinger@ssw.jku.at>
parents:
1356
diff
changeset
|
2900 if (PrintVMOptions) { |
7125
1baf7f1e3f23
decoupled C++ Graal runtime from C1
Doug Simon <doug.simon@oracle.com>
parents:
7066
diff
changeset
|
2901 tty->print_cr("Graal option %s", tail); |
1437
9e5e83ca2259
Enabled -C1X:OPTIONS when running HotSpot/C1X. Enabled checkstyle for the HotSpotVM Java project.
Thomas Wuerthinger <wuerthinger@ssw.jku.at>
parents:
1356
diff
changeset
|
2902 } |
2891
75a99b4f1c98
Rebranded C++ part from C1X to Graal.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
2873
diff
changeset
|
2903 Arguments::add_graal_arg(tail); |
1437
9e5e83ca2259
Enabled -C1X:OPTIONS when running HotSpot/C1X. Enabled checkstyle for the HotSpotVM Java project.
Thomas Wuerthinger <wuerthinger@ssw.jku.at>
parents:
1356
diff
changeset
|
2904 |
0 | 2905 // Unknown option |
4559
723df37192d6
Make it possible again to build a real client libjvm, drop the UseGraal flag.
Gilles Duboscq <duboscq@ssw.jku.at>
parents:
4350
diff
changeset
|
2906 } |
723df37192d6
Make it possible again to build a real client libjvm, drop the UseGraal flag.
Gilles Duboscq <duboscq@ssw.jku.at>
parents:
4350
diff
changeset
|
2907 #endif |
723df37192d6
Make it possible again to build a real client libjvm, drop the UseGraal flag.
Gilles Duboscq <duboscq@ssw.jku.at>
parents:
4350
diff
changeset
|
2908 else if (is_bad_option(option, args->ignoreUnrecognized)) { |
0 | 2909 return JNI_ERR; |
2910 } | |
2911 } | |
3767
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3349
diff
changeset
|
2912 |
449
171e581e8161
6554406: Change switch UseVMInterruptibleIO default to false (sol)
xlu
parents:
420
diff
changeset
|
2913 // Change the default value for flags which have different default values |
171e581e8161
6554406: Change switch UseVMInterruptibleIO default to false (sol)
xlu
parents:
420
diff
changeset
|
2914 // when working with older JDKs. |
1679
3d90023429ec
6888526: Linux getCurrentThreadCpuTime is drastically slower than Windows
aph
parents:
1628
diff
changeset
|
2915 #ifdef LINUX |
3d90023429ec
6888526: Linux getCurrentThreadCpuTime is drastically slower than Windows
aph
parents:
1628
diff
changeset
|
2916 if (JDK_Version::current().compare_major(6) <= 0 && |
3d90023429ec
6888526: Linux getCurrentThreadCpuTime is drastically slower than Windows
aph
parents:
1628
diff
changeset
|
2917 FLAG_IS_DEFAULT(UseLinuxPosixThreadCPUClocks)) { |
3d90023429ec
6888526: Linux getCurrentThreadCpuTime is drastically slower than Windows
aph
parents:
1628
diff
changeset
|
2918 FLAG_SET_DEFAULT(UseLinuxPosixThreadCPUClocks, false); |
3d90023429ec
6888526: Linux getCurrentThreadCpuTime is drastically slower than Windows
aph
parents:
1628
diff
changeset
|
2919 } |
3d90023429ec
6888526: Linux getCurrentThreadCpuTime is drastically slower than Windows
aph
parents:
1628
diff
changeset
|
2920 #endif // LINUX |
0 | 2921 return JNI_OK; |
2922 } | |
2923 | |
2924 jint Arguments::finalize_vm_init_args(SysClassPath* scp_p, bool scp_assembly_required) { | |
2925 // This must be done after all -D arguments have been processed. | |
2926 scp_p->expand_endorsed(); | |
2927 | |
2928 if (scp_assembly_required || scp_p->get_endorsed() != NULL) { | |
2929 // Assemble the bootclasspath elements into the final path. | |
2930 Arguments::set_sysclasspath(scp_p->combined_path()); | |
2931 } | |
2932 | |
2933 // This must be done after all arguments have been processed. | |
2934 // java_compiler() true means set to "NONE" or empty. | |
2935 if (java_compiler() && !xdebug_mode()) { | |
2936 // For backwards compatibility, we switch to interpreted mode if | |
2937 // -Djava.compiler="NONE" or "" is specified AND "-Xdebug" was | |
2938 // not specified. | |
2939 set_mode_flags(_int); | |
2940 } | |
2941 if (CompileThreshold == 0) { | |
2942 set_mode_flags(_int); | |
2943 } | |
2944 | |
2945 #ifndef COMPILER2 | |
2946 // Don't degrade server performance for footprint | |
2947 if (FLAG_IS_DEFAULT(UseLargePages) && | |
2948 MaxHeapSize < LargePageHeapSizeThreshold) { | |
2949 // No need for large granularity pages w/small heaps. | |
2950 // Note that large pages are enabled/disabled for both the | |
2951 // Java heap and the code cache. | |
2952 FLAG_SET_DEFAULT(UseLargePages, false); | |
2953 SOLARIS_ONLY(FLAG_SET_DEFAULT(UseMPSS, false)); | |
2954 SOLARIS_ONLY(FLAG_SET_DEFAULT(UseISM, false)); | |
2955 } | |
342
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
135
diff
changeset
|
2956 |
1251
576e77447e3c
6923002: assert(false,"this call site should not be polymorphic")
kvn
parents:
1188
diff
changeset
|
2957 // Tiered compilation is undefined with C1. |
576e77447e3c
6923002: assert(false,"this call site should not be polymorphic")
kvn
parents:
1188
diff
changeset
|
2958 TieredCompilation = false; |
0 | 2959 #else |
2960 if (!FLAG_IS_DEFAULT(OptoLoopAlignment) && FLAG_IS_DEFAULT(MaxLoopPad)) { | |
2961 FLAG_SET_DEFAULT(MaxLoopPad, OptoLoopAlignment-1); | |
2962 } | |
2963 #endif | |
2964 | |
1681
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2965 // If we are running in a headless jre, force java.awt.headless property |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2966 // to be true unless the property has already been set. |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2967 // Also allow the OS environment variable JAVA_AWT_HEADLESS to set headless state. |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2968 if (os::is_headless_jre()) { |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2969 const char* headless = Arguments::get_property("java.awt.headless"); |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2970 if (headless == NULL) { |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2971 char envbuffer[128]; |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2972 if (!os::getenv("JAVA_AWT_HEADLESS", envbuffer, sizeof(envbuffer))) { |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2973 if (!add_property("java.awt.headless=true")) { |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2974 return JNI_ENOMEM; |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2975 } |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2976 } else { |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2977 char buffer[256]; |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2978 strcpy(buffer, "java.awt.headless="); |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2979 strcat(buffer, envbuffer); |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2980 if (!add_property(buffer)) { |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2981 return JNI_ENOMEM; |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2982 } |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2983 } |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2984 } |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2985 } |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2986 |
0 | 2987 if (!check_vm_args_consistency()) { |
2988 return JNI_ERR; | |
2989 } | |
2990 | |
2991 return JNI_OK; | |
2992 } | |
2993 | |
2994 jint Arguments::parse_java_options_environment_variable(SysClassPath* scp_p, bool* scp_assembly_required_p) { | |
2995 return parse_options_environment_variable("_JAVA_OPTIONS", scp_p, | |
2996 scp_assembly_required_p); | |
2997 } | |
2998 | |
2999 jint Arguments::parse_java_tool_options_environment_variable(SysClassPath* scp_p, bool* scp_assembly_required_p) { | |
3000 return parse_options_environment_variable("JAVA_TOOL_OPTIONS", scp_p, | |
3001 scp_assembly_required_p); | |
3002 } | |
3003 | |
3004 jint Arguments::parse_options_environment_variable(const char* name, SysClassPath* scp_p, bool* scp_assembly_required_p) { | |
3005 const int N_MAX_OPTIONS = 64; | |
3006 const int OPTION_BUFFER_SIZE = 1024; | |
3007 char buffer[OPTION_BUFFER_SIZE]; | |
3008 | |
3009 // The variable will be ignored if it exceeds the length of the buffer. | |
3010 // Don't check this variable if user has special privileges | |
3011 // (e.g. unix su command). | |
3012 if (os::getenv(name, buffer, sizeof(buffer)) && | |
3013 !os::have_special_privileges()) { | |
3014 JavaVMOption options[N_MAX_OPTIONS]; // Construct option array | |
3015 jio_fprintf(defaultStream::error_stream(), | |
3016 "Picked up %s: %s\n", name, buffer); | |
3017 char* rd = buffer; // pointer to the input string (rd) | |
3018 int i; | |
3019 for (i = 0; i < N_MAX_OPTIONS;) { // repeat for all options in the input string | |
3020 while (isspace(*rd)) rd++; // skip whitespace | |
3021 if (*rd == 0) break; // we re done when the input string is read completely | |
3022 | |
3023 // The output, option string, overwrites the input string. | |
3024 // Because of quoting, the pointer to the option string (wrt) may lag the pointer to | |
3025 // input string (rd). | |
3026 char* wrt = rd; | |
3027 | |
3028 options[i++].optionString = wrt; // Fill in option | |
3029 while (*rd != 0 && !isspace(*rd)) { // unquoted strings terminate with a space or NULL | |
3030 if (*rd == '\'' || *rd == '"') { // handle a quoted string | |
3031 int quote = *rd; // matching quote to look for | |
3032 rd++; // don't copy open quote | |
3033 while (*rd != quote) { // include everything (even spaces) up until quote | |
3034 if (*rd == 0) { // string termination means unmatched string | |
3035 jio_fprintf(defaultStream::error_stream(), | |
3036 "Unmatched quote in %s\n", name); | |
3037 return JNI_ERR; | |
3038 } | |
3039 *wrt++ = *rd++; // copy to option string | |
3040 } | |
3041 rd++; // don't copy close quote | |
3042 } else { | |
3043 *wrt++ = *rd++; // copy to option string | |
3044 } | |
3045 } | |
3046 // Need to check if we're done before writing a NULL, | |
3047 // because the write could be to the byte that rd is pointing to. | |
3048 if (*rd++ == 0) { | |
3049 *wrt = 0; | |
3050 break; | |
3051 } | |
3052 *wrt = 0; // Zero terminate option | |
3053 } | |
3054 // Construct JavaVMInitArgs structure and parse as if it was part of the command line | |
3055 JavaVMInitArgs vm_args; | |
3056 vm_args.version = JNI_VERSION_1_2; | |
3057 vm_args.options = options; | |
3058 vm_args.nOptions = i; | |
564 | 3059 vm_args.ignoreUnrecognized = IgnoreUnrecognizedVMOptions; |
0 | 3060 |
3061 if (PrintVMOptions) { | |
3062 const char* tail; | |
3063 for (int i = 0; i < vm_args.nOptions; i++) { | |
3064 const JavaVMOption *option = vm_args.options + i; | |
3065 if (match_option(option, "-XX:", &tail)) { | |
3066 logOption(tail); | |
3067 } | |
3068 } | |
3069 } | |
3070 | |
3071 return(parse_each_vm_init_arg(&vm_args, scp_p, scp_assembly_required_p, ENVIRON_VAR)); | |
3072 } | |
3073 return JNI_OK; | |
3074 } | |
3075 | |
2362
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7018056: large pages not always enabled by default
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diff
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|
3076 void Arguments::set_shared_spaces_flags() { |
2378 | 3077 const bool must_share = DumpSharedSpaces || RequireSharedSpaces; |
3078 const bool might_share = must_share || UseSharedSpaces; | |
3079 | |
6725
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6964458: Reimplement class meta-data storage to use native memory
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|
3080 // CompressedOops cannot be used with CDS. The offsets of oopmaps and |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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|
3081 // static fields are incorrect in the archive. With some more clever |
da91efe96a93
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|
3082 // initialization, this restriction can probably be lifted. |
da91efe96a93
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|
3083 // ??? UseLargePages might be okay now |
da91efe96a93
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|
3084 const bool cannot_share = UseCompressedOops || |
da91efe96a93
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|
3085 (UseLargePages && FLAG_IS_CMDLINE(UseLargePages)); |
2362
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7018056: large pages not always enabled by default
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diff
changeset
|
3086 if (cannot_share) { |
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
3087 if (must_share) { |
6736
11fb740ce98f
7196103: NPG: Unable to allocate bit map for parallel garbage collection for the requested heap size
coleenp
parents:
6725
diff
changeset
|
3088 warning("disabling large pages %s" |
2378 | 3089 "because of %s", "" LP64_ONLY("and compressed oops "), |
3090 DumpSharedSpaces ? "-Xshare:dump" : "-Xshare:on"); | |
3091 FLAG_SET_CMDLINE(bool, UseLargePages, false); | |
3092 LP64_ONLY(FLAG_SET_CMDLINE(bool, UseCompressedOops, false)); | |
6725
da91efe96a93
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|
3093 LP64_ONLY(FLAG_SET_CMDLINE(bool, UseCompressedKlassPointers, false)); |
2362
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7018056: large pages not always enabled by default
jcoomes
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diff
changeset
|
3094 } else { |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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changeset
|
3095 // Prefer compressed oops and large pages to class data sharing |
2362
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7018056: large pages not always enabled by default
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diff
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|
3096 if (UseSharedSpaces && Verbose) { |
6725
da91efe96a93
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|
3097 warning("turning off use of shared archive because of large pages%s", |
da91efe96a93
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|
3098 "" LP64_ONLY(" and/or compressed oops")); |
2362
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
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diff
changeset
|
3099 } |
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
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diff
changeset
|
3100 no_shared_spaces(); |
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
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diff
changeset
|
3101 } |
a2c2eac1ca62
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diff
changeset
|
3102 } else if (UseLargePages && might_share) { |
a2c2eac1ca62
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changeset
|
3103 // Disable large pages to allow shared spaces. This is sub-optimal, since |
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
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diff
changeset
|
3104 // there may not even be a shared archive to use. |
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
3105 FLAG_SET_DEFAULT(UseLargePages, false); |
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
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diff
changeset
|
3106 } |
6725
da91efe96a93
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changeset
|
3107 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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changeset
|
3108 if (DumpSharedSpaces) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
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|
3109 if (RequireSharedSpaces) { |
da91efe96a93
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changeset
|
3110 warning("cannot dump shared archive while using shared archive"); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
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|
3111 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
changeset
|
3112 UseSharedSpaces = false; |
da91efe96a93
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|
3113 } |
2362
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
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diff
changeset
|
3114 } |
1891
9de67bf4244d
6996136: VM crash in src/share/vm/runtime/virtualspace.cpp:424
iveresov
parents:
1890
diff
changeset
|
3115 |
3797
eb94b7226b7a
7061192: option handling adjustments for oracle and embedded builds
jcoomes
parents:
3769
diff
changeset
|
3116 // Disable options not supported in this release, with a warning if they |
eb94b7226b7a
7061192: option handling adjustments for oracle and embedded builds
jcoomes
parents:
3769
diff
changeset
|
3117 // were explicitly requested on the command-line |
eb94b7226b7a
7061192: option handling adjustments for oracle and embedded builds
jcoomes
parents:
3769
diff
changeset
|
3118 #define UNSUPPORTED_OPTION(opt, description) \ |
eb94b7226b7a
7061192: option handling adjustments for oracle and embedded builds
jcoomes
parents:
3769
diff
changeset
|
3119 do { \ |
eb94b7226b7a
7061192: option handling adjustments for oracle and embedded builds
jcoomes
parents:
3769
diff
changeset
|
3120 if (opt) { \ |
eb94b7226b7a
7061192: option handling adjustments for oracle and embedded builds
jcoomes
parents:
3769
diff
changeset
|
3121 if (FLAG_IS_CMDLINE(opt)) { \ |
eb94b7226b7a
7061192: option handling adjustments for oracle and embedded builds
jcoomes
parents:
3769
diff
changeset
|
3122 warning(description " is disabled in this release."); \ |
eb94b7226b7a
7061192: option handling adjustments for oracle and embedded builds
jcoomes
parents:
3769
diff
changeset
|
3123 } \ |
eb94b7226b7a
7061192: option handling adjustments for oracle and embedded builds
jcoomes
parents:
3769
diff
changeset
|
3124 FLAG_SET_DEFAULT(opt, false); \ |
eb94b7226b7a
7061192: option handling adjustments for oracle and embedded builds
jcoomes
parents:
3769
diff
changeset
|
3125 } \ |
eb94b7226b7a
7061192: option handling adjustments for oracle and embedded builds
jcoomes
parents:
3769
diff
changeset
|
3126 } while(0) |
eb94b7226b7a
7061192: option handling adjustments for oracle and embedded builds
jcoomes
parents:
3769
diff
changeset
|
3127 |
8086
1605eef8e11e
8003581: UseG1GC is not properly accounted for by INCLUDE_ALTERNATE_GCS
jprovino
parents:
8083
diff
changeset
|
3128 |
1605eef8e11e
8003581: UseG1GC is not properly accounted for by INCLUDE_ALTERNATE_GCS
jprovino
parents:
8083
diff
changeset
|
3129 #define UNSUPPORTED_GC_OPTION(gc) \ |
1605eef8e11e
8003581: UseG1GC is not properly accounted for by INCLUDE_ALTERNATE_GCS
jprovino
parents:
8083
diff
changeset
|
3130 do { \ |
1605eef8e11e
8003581: UseG1GC is not properly accounted for by INCLUDE_ALTERNATE_GCS
jprovino
parents:
8083
diff
changeset
|
3131 if (gc) { \ |
1605eef8e11e
8003581: UseG1GC is not properly accounted for by INCLUDE_ALTERNATE_GCS
jprovino
parents:
8083
diff
changeset
|
3132 if (FLAG_IS_CMDLINE(gc)) { \ |
1605eef8e11e
8003581: UseG1GC is not properly accounted for by INCLUDE_ALTERNATE_GCS
jprovino
parents:
8083
diff
changeset
|
3133 warning(#gc " is not supported in this VM. Using Serial GC."); \ |
1605eef8e11e
8003581: UseG1GC is not properly accounted for by INCLUDE_ALTERNATE_GCS
jprovino
parents:
8083
diff
changeset
|
3134 } \ |
1605eef8e11e
8003581: UseG1GC is not properly accounted for by INCLUDE_ALTERNATE_GCS
jprovino
parents:
8083
diff
changeset
|
3135 FLAG_SET_DEFAULT(gc, false); \ |
1605eef8e11e
8003581: UseG1GC is not properly accounted for by INCLUDE_ALTERNATE_GCS
jprovino
parents:
8083
diff
changeset
|
3136 } \ |
1605eef8e11e
8003581: UseG1GC is not properly accounted for by INCLUDE_ALTERNATE_GCS
jprovino
parents:
8083
diff
changeset
|
3137 } while(0) |
1605eef8e11e
8003581: UseG1GC is not properly accounted for by INCLUDE_ALTERNATE_GCS
jprovino
parents:
8083
diff
changeset
|
3138 |
1605eef8e11e
8003581: UseG1GC is not properly accounted for by INCLUDE_ALTERNATE_GCS
jprovino
parents:
8083
diff
changeset
|
3139 static void force_serial_gc() { |
1605eef8e11e
8003581: UseG1GC is not properly accounted for by INCLUDE_ALTERNATE_GCS
jprovino
parents:
8083
diff
changeset
|
3140 FLAG_SET_DEFAULT(UseSerialGC, true); |
1605eef8e11e
8003581: UseG1GC is not properly accounted for by INCLUDE_ALTERNATE_GCS
jprovino
parents:
8083
diff
changeset
|
3141 FLAG_SET_DEFAULT(CMSIncrementalMode, false); // special CMS suboption |
1605eef8e11e
8003581: UseG1GC is not properly accounted for by INCLUDE_ALTERNATE_GCS
jprovino
parents:
8083
diff
changeset
|
3142 UNSUPPORTED_GC_OPTION(UseG1GC); |
1605eef8e11e
8003581: UseG1GC is not properly accounted for by INCLUDE_ALTERNATE_GCS
jprovino
parents:
8083
diff
changeset
|
3143 UNSUPPORTED_GC_OPTION(UseParallelGC); |
1605eef8e11e
8003581: UseG1GC is not properly accounted for by INCLUDE_ALTERNATE_GCS
jprovino
parents:
8083
diff
changeset
|
3144 UNSUPPORTED_GC_OPTION(UseParallelOldGC); |
1605eef8e11e
8003581: UseG1GC is not properly accounted for by INCLUDE_ALTERNATE_GCS
jprovino
parents:
8083
diff
changeset
|
3145 UNSUPPORTED_GC_OPTION(UseConcMarkSweepGC); |
1605eef8e11e
8003581: UseG1GC is not properly accounted for by INCLUDE_ALTERNATE_GCS
jprovino
parents:
8083
diff
changeset
|
3146 UNSUPPORTED_GC_OPTION(UseParNewGC); |
1605eef8e11e
8003581: UseG1GC is not properly accounted for by INCLUDE_ALTERNATE_GCS
jprovino
parents:
8083
diff
changeset
|
3147 } |
1605eef8e11e
8003581: UseG1GC is not properly accounted for by INCLUDE_ALTERNATE_GCS
jprovino
parents:
8083
diff
changeset
|
3148 |
0 | 3149 // Parse entry point called from JNI_CreateJavaVM |
3150 | |
3151 jint Arguments::parse(const JavaVMInitArgs* args) { | |
3152 | |
3153 // Sharing support | |
3154 // Construct the path to the archive | |
3155 char jvm_path[JVM_MAXPATHLEN]; | |
3156 os::jvm_path(jvm_path, sizeof(jvm_path)); | |
3157 char *end = strrchr(jvm_path, *os::file_separator()); | |
3158 if (end != NULL) *end = '\0'; | |
3159 char *shared_archive_path = NEW_C_HEAP_ARRAY(char, strlen(jvm_path) + | |
6197 | 3160 strlen(os::file_separator()) + 20, mtInternal); |
0 | 3161 if (shared_archive_path == NULL) return JNI_ENOMEM; |
3162 strcpy(shared_archive_path, jvm_path); | |
3163 strcat(shared_archive_path, os::file_separator()); | |
3164 strcat(shared_archive_path, "classes"); | |
3165 strcat(shared_archive_path, ".jsa"); | |
3166 SharedArchivePath = shared_archive_path; | |
3167 | |
3168 // Remaining part of option string | |
3169 const char* tail; | |
3170 | |
3171 // If flag "-XX:Flags=flags-file" is used it will be the first option to be processed. | |
6196
3759236eea14
7167142: Consider a warning when finding a .hotspotrc or .hotspot_compiler file that isn't used
kamg
parents:
6158
diff
changeset
|
3172 const char* hotspotrc = ".hotspotrc"; |
0 | 3173 bool settings_file_specified = false; |
6196
3759236eea14
7167142: Consider a warning when finding a .hotspotrc or .hotspot_compiler file that isn't used
kamg
parents:
6158
diff
changeset
|
3174 bool needs_hotspotrc_warning = false; |
3759236eea14
7167142: Consider a warning when finding a .hotspotrc or .hotspot_compiler file that isn't used
kamg
parents:
6158
diff
changeset
|
3175 |
564 | 3176 const char* flags_file; |
0 | 3177 int index; |
3178 for (index = 0; index < args->nOptions; index++) { | |
3179 const JavaVMOption *option = args->options + index; | |
3180 if (match_option(option, "-XX:Flags=", &tail)) { | |
564 | 3181 flags_file = tail; |
0 | 3182 settings_file_specified = true; |
3183 } | |
3184 if (match_option(option, "-XX:+PrintVMOptions", &tail)) { | |
3185 PrintVMOptions = true; | |
3186 } | |
253
b0fe4deeb9fb
6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.")
kvn
parents:
196
diff
changeset
|
3187 if (match_option(option, "-XX:-PrintVMOptions", &tail)) { |
b0fe4deeb9fb
6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.")
kvn
parents:
196
diff
changeset
|
3188 PrintVMOptions = false; |
b0fe4deeb9fb
6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.")
kvn
parents:
196
diff
changeset
|
3189 } |
564 | 3190 if (match_option(option, "-XX:+IgnoreUnrecognizedVMOptions", &tail)) { |
3191 IgnoreUnrecognizedVMOptions = true; | |
3192 } | |
3193 if (match_option(option, "-XX:-IgnoreUnrecognizedVMOptions", &tail)) { | |
3194 IgnoreUnrecognizedVMOptions = false; | |
3195 } | |
1150 | 3196 if (match_option(option, "-XX:+PrintFlagsInitial", &tail)) { |
4773 | 3197 CommandLineFlags::printFlags(tty, false); |
1150 | 3198 vm_exit(0); |
3199 } | |
6197 | 3200 if (match_option(option, "-XX:NativeMemoryTracking", &tail)) { |
6854
fb19af007ffc
7189254: Change makefiles for more flexibility to override defaults
jprovino
parents:
6818
diff
changeset
|
3201 #if INCLUDE_NMT |
6197 | 3202 MemTracker::init_tracking_options(tail); |
6854
fb19af007ffc
7189254: Change makefiles for more flexibility to override defaults
jprovino
parents:
6818
diff
changeset
|
3203 #else |
fb19af007ffc
7189254: Change makefiles for more flexibility to override defaults
jprovino
parents:
6818
diff
changeset
|
3204 warning("Native Memory Tracking is not supported in this VM"); |
fb19af007ffc
7189254: Change makefiles for more flexibility to override defaults
jprovino
parents:
6818
diff
changeset
|
3205 #endif |
6197 | 3206 } |
3207 | |
1768
6ee479178066
6979444: add command line option to print command line flags descriptions
ikrylov
parents:
1745
diff
changeset
|
3208 |
6ee479178066
6979444: add command line option to print command line flags descriptions
ikrylov
parents:
1745
diff
changeset
|
3209 #ifndef PRODUCT |
6ee479178066
6979444: add command line option to print command line flags descriptions
ikrylov
parents:
1745
diff
changeset
|
3210 if (match_option(option, "-XX:+PrintFlagsWithComments", &tail)) { |
4773 | 3211 CommandLineFlags::printFlags(tty, true); |
1768
6ee479178066
6979444: add command line option to print command line flags descriptions
ikrylov
parents:
1745
diff
changeset
|
3212 vm_exit(0); |
6ee479178066
6979444: add command line option to print command line flags descriptions
ikrylov
parents:
1745
diff
changeset
|
3213 } |
6ee479178066
6979444: add command line option to print command line flags descriptions
ikrylov
parents:
1745
diff
changeset
|
3214 #endif |
564 | 3215 } |
3216 | |
3217 if (IgnoreUnrecognizedVMOptions) { | |
3218 // uncast const to modify the flag args->ignoreUnrecognized | |
3219 *(jboolean*)(&args->ignoreUnrecognized) = true; | |
3220 } | |
3221 | |
3222 // Parse specified settings file | |
3223 if (settings_file_specified) { | |
3224 if (!process_settings_file(flags_file, true, args->ignoreUnrecognized)) { | |
3225 return JNI_EINVAL; | |
3226 } | |
6196
3759236eea14
7167142: Consider a warning when finding a .hotspotrc or .hotspot_compiler file that isn't used
kamg
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6158
diff
changeset
|
3227 } else { |
6150
1e76463170b3
7110720: Issue with vm config file loadingIssue with vm config file loading
kamg
parents:
4780
diff
changeset
|
3228 #ifdef ASSERT |
6196
3759236eea14
7167142: Consider a warning when finding a .hotspotrc or .hotspot_compiler file that isn't used
kamg
parents:
6158
diff
changeset
|
3229 // Parse default .hotspotrc settings file |
0 | 3230 if (!process_settings_file(".hotspotrc", false, args->ignoreUnrecognized)) { |
3231 return JNI_EINVAL; | |
3232 } | |
6196
3759236eea14
7167142: Consider a warning when finding a .hotspotrc or .hotspot_compiler file that isn't used
kamg
parents:
6158
diff
changeset
|
3233 #else |
3759236eea14
7167142: Consider a warning when finding a .hotspotrc or .hotspot_compiler file that isn't used
kamg
parents:
6158
diff
changeset
|
3234 struct stat buf; |
3759236eea14
7167142: Consider a warning when finding a .hotspotrc or .hotspot_compiler file that isn't used
kamg
parents:
6158
diff
changeset
|
3235 if (os::stat(hotspotrc, &buf) == 0) { |
3759236eea14
7167142: Consider a warning when finding a .hotspotrc or .hotspot_compiler file that isn't used
kamg
parents:
6158
diff
changeset
|
3236 needs_hotspotrc_warning = true; |
3759236eea14
7167142: Consider a warning when finding a .hotspotrc or .hotspot_compiler file that isn't used
kamg
parents:
6158
diff
changeset
|
3237 } |
3759236eea14
7167142: Consider a warning when finding a .hotspotrc or .hotspot_compiler file that isn't used
kamg
parents:
6158
diff
changeset
|
3238 #endif |
0 | 3239 } |
3240 | |
3241 if (PrintVMOptions) { | |
3242 for (index = 0; index < args->nOptions; index++) { | |
3243 const JavaVMOption *option = args->options + index; | |
3244 if (match_option(option, "-XX:", &tail)) { | |
3245 logOption(tail); | |
3246 } | |
3247 } | |
3248 } | |
3249 | |
3250 // Parse JavaVMInitArgs structure passed in, as well as JAVA_TOOL_OPTIONS and _JAVA_OPTIONS | |
3251 jint result = parse_vm_init_args(args); | |
3252 if (result != JNI_OK) { | |
3253 return result; | |
3254 } | |
3255 | |
6196
3759236eea14
7167142: Consider a warning when finding a .hotspotrc or .hotspot_compiler file that isn't used
kamg
parents:
6158
diff
changeset
|
3256 // Delay warning until here so that we've had a chance to process |
3759236eea14
7167142: Consider a warning when finding a .hotspotrc or .hotspot_compiler file that isn't used
kamg
parents:
6158
diff
changeset
|
3257 // the -XX:-PrintWarnings flag |
3759236eea14
7167142: Consider a warning when finding a .hotspotrc or .hotspot_compiler file that isn't used
kamg
parents:
6158
diff
changeset
|
3258 if (needs_hotspotrc_warning) { |
3759236eea14
7167142: Consider a warning when finding a .hotspotrc or .hotspot_compiler file that isn't used
kamg
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6158
diff
changeset
|
3259 warning("%s file is present but has been ignored. " |
3759236eea14
7167142: Consider a warning when finding a .hotspotrc or .hotspot_compiler file that isn't used
kamg
parents:
6158
diff
changeset
|
3260 "Run with -XX:Flags=%s to load the file.", |
3759236eea14
7167142: Consider a warning when finding a .hotspotrc or .hotspot_compiler file that isn't used
kamg
parents:
6158
diff
changeset
|
3261 hotspotrc, hotspotrc); |
3759236eea14
7167142: Consider a warning when finding a .hotspotrc or .hotspot_compiler file that isn't used
kamg
parents:
6158
diff
changeset
|
3262 } |
3759236eea14
7167142: Consider a warning when finding a .hotspotrc or .hotspot_compiler file that isn't used
kamg
parents:
6158
diff
changeset
|
3263 |
6917
e81fbc04a942
7191817: -XX:+UseSerialGC -XX:+UseLargePages crashes with SIGFPE on MacOS X
coleenp
parents:
6916
diff
changeset
|
3264 #ifdef _ALLBSD_SOURCE // UseLargePages is not yet supported on BSD. |
e81fbc04a942
7191817: -XX:+UseSerialGC -XX:+UseLargePages crashes with SIGFPE on MacOS X
coleenp
parents:
6916
diff
changeset
|
3265 UNSUPPORTED_OPTION(UseLargePages, "-XX:+UseLargePages"); |
e81fbc04a942
7191817: -XX:+UseSerialGC -XX:+UseLargePages crashes with SIGFPE on MacOS X
coleenp
parents:
6916
diff
changeset
|
3266 #endif |
e81fbc04a942
7191817: -XX:+UseSerialGC -XX:+UseLargePages crashes with SIGFPE on MacOS X
coleenp
parents:
6916
diff
changeset
|
3267 |
8086
1605eef8e11e
8003581: UseG1GC is not properly accounted for by INCLUDE_ALTERNATE_GCS
jprovino
parents:
8083
diff
changeset
|
3268 #if INCLUDE_ALL_GCS |
1605eef8e11e
8003581: UseG1GC is not properly accounted for by INCLUDE_ALTERNATE_GCS
jprovino
parents:
8083
diff
changeset
|
3269 #if (defined JAVASE_EMBEDDED || defined ARM) |
1605eef8e11e
8003581: UseG1GC is not properly accounted for by INCLUDE_ALTERNATE_GCS
jprovino
parents:
8083
diff
changeset
|
3270 UNSUPPORTED_OPTION(UseG1GC, "G1 GC"); |
1605eef8e11e
8003581: UseG1GC is not properly accounted for by INCLUDE_ALTERNATE_GCS
jprovino
parents:
8083
diff
changeset
|
3271 #endif |
1605eef8e11e
8003581: UseG1GC is not properly accounted for by INCLUDE_ALTERNATE_GCS
jprovino
parents:
8083
diff
changeset
|
3272 #endif |
6854
fb19af007ffc
7189254: Change makefiles for more flexibility to override defaults
jprovino
parents:
6818
diff
changeset
|
3273 |
0 | 3274 #ifndef PRODUCT |
3275 if (TraceBytecodesAt != 0) { | |
3276 TraceBytecodes = true; | |
3277 } | |
3278 if (CountCompiledCalls) { | |
3279 if (UseCounterDecay) { | |
3280 warning("UseCounterDecay disabled because CountCalls is set"); | |
3281 UseCounterDecay = false; | |
3282 } | |
3283 } | |
3284 #endif // PRODUCT | |
3285 | |
2416
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
3286 // JSR 292 is not supported before 1.7 |
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
3287 if (!JDK_Version::is_gte_jdk17x_version()) { |
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
3288 if (EnableInvokeDynamic) { |
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
3289 if (!FLAG_IS_DEFAULT(EnableInvokeDynamic)) { |
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
3290 warning("JSR 292 is not supported before 1.7. Disabling support."); |
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
3291 } |
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
3292 EnableInvokeDynamic = false; |
710 | 3293 } |
3294 } | |
2416
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
3295 |
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
3296 if (EnableInvokeDynamic && ScavengeRootsInCode == 0) { |
989
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
932
diff
changeset
|
3297 if (!FLAG_IS_DEFAULT(ScavengeRootsInCode)) { |
2416
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
3298 warning("forcing ScavengeRootsInCode non-zero because EnableInvokeDynamic is true"); |
989
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
932
diff
changeset
|
3299 } |
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
932
diff
changeset
|
3300 ScavengeRootsInCode = 1; |
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
932
diff
changeset
|
3301 } |
710 | 3302 |
0 | 3303 if (PrintGCDetails) { |
3304 // Turn on -verbose:gc options as well | |
3305 PrintGC = true; | |
3306 } | |
3307 | |
6064
9d679effd28c
7166894: Add gc cause to GC logging for all collectors
brutisso
parents:
6017
diff
changeset
|
3308 if (!JDK_Version::is_gte_jdk18x_version()) { |
9d679effd28c
7166894: Add gc cause to GC logging for all collectors
brutisso
parents:
6017
diff
changeset
|
3309 // To avoid changing the log format for 7 updates this flag is only |
9d679effd28c
7166894: Add gc cause to GC logging for all collectors
brutisso
parents:
6017
diff
changeset
|
3310 // true by default in JDK8 and above. |
9d679effd28c
7166894: Add gc cause to GC logging for all collectors
brutisso
parents:
6017
diff
changeset
|
3311 if (FLAG_IS_DEFAULT(PrintGCCause)) { |
9d679effd28c
7166894: Add gc cause to GC logging for all collectors
brutisso
parents:
6017
diff
changeset
|
3312 FLAG_SET_DEFAULT(PrintGCCause, false); |
9d679effd28c
7166894: Add gc cause to GC logging for all collectors
brutisso
parents:
6017
diff
changeset
|
3313 } |
9d679effd28c
7166894: Add gc cause to GC logging for all collectors
brutisso
parents:
6017
diff
changeset
|
3314 } |
9d679effd28c
7166894: Add gc cause to GC logging for all collectors
brutisso
parents:
6017
diff
changeset
|
3315 |
1571
2d127394260e
6916623: Align object to 16 bytes to use Compressed Oops with java heap up to 64Gb
kvn
parents:
1506
diff
changeset
|
3316 // Set object alignment values. |
2d127394260e
6916623: Align object to 16 bytes to use Compressed Oops with java heap up to 64Gb
kvn
parents:
1506
diff
changeset
|
3317 set_object_alignment(); |
2d127394260e
6916623: Align object to 16 bytes to use Compressed Oops with java heap up to 64Gb
kvn
parents:
1506
diff
changeset
|
3318 |
8001
db9981fd3124
8005915: Unify SERIALGC and INCLUDE_ALTERNATE_GCS
jprovino
parents:
7479
diff
changeset
|
3319 #if !INCLUDE_ALL_GCS |
1064 | 3320 force_serial_gc(); |
8001
db9981fd3124
8005915: Unify SERIALGC and INCLUDE_ALTERNATE_GCS
jprovino
parents:
7479
diff
changeset
|
3321 #endif // INCLUDE_ALL_GCS |
6854
fb19af007ffc
7189254: Change makefiles for more flexibility to override defaults
jprovino
parents:
6818
diff
changeset
|
3322 #if !INCLUDE_CDS |
0 | 3323 no_shared_spaces(); |
6854
fb19af007ffc
7189254: Change makefiles for more flexibility to override defaults
jprovino
parents:
6818
diff
changeset
|
3324 #endif // INCLUDE_CDS |
0 | 3325 |
3326 // Set flags based on ergonomics. | |
3327 set_ergonomics_flags(); | |
3328 | |
2362
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
3329 set_shared_spaces_flags(); |
1135
e66fd840cb6b
6893081: method handle & invokedynamic code needs additional cleanup (post 6815692, 6858164)
twisti
parents:
1131
diff
changeset
|
3330 |
10
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
3331 // Check the GC selections again. |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
3332 if (!check_gc_consistency()) { |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
3333 return JNI_EINVAL; |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
3334 } |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
3335 |
1783 | 3336 if (TieredCompilation) { |
3337 set_tiered_flags(); | |
3338 } else { | |
3339 // Check if the policy is valid. Policies 0 and 1 are valid for non-tiered setup. | |
5176
af59b4dfc9e4
compilation queue changes:
Lukas Stadler <lukas.stadler@jku.at>
parents:
5152
diff
changeset
|
3340 if (CompilationPolicyChoice >= 2 && CompilationPolicyChoice < 4) { |
1783 | 3341 vm_exit_during_initialization( |
3342 "Incompatible compilation policy selected", NULL); | |
3343 } | |
3344 } | |
3345 | |
2368
dde920245681
6896099: Integrate CMS heap ergo with default heap sizing ergo
ysr
parents:
2366
diff
changeset
|
3346 // Set heap size based on available physical memory |
dde920245681
6896099: Integrate CMS heap ergo with default heap sizing ergo
ysr
parents:
2366
diff
changeset
|
3347 set_heap_size(); |
6854
fb19af007ffc
7189254: Change makefiles for more flexibility to override defaults
jprovino
parents:
6818
diff
changeset
|
3348 |
8001
db9981fd3124
8005915: Unify SERIALGC and INCLUDE_ALTERNATE_GCS
jprovino
parents:
7479
diff
changeset
|
3349 #if INCLUDE_ALL_GCS |
2368
dde920245681
6896099: Integrate CMS heap ergo with default heap sizing ergo
ysr
parents:
2366
diff
changeset
|
3350 // Set per-collector flags |
dde920245681
6896099: Integrate CMS heap ergo with default heap sizing ergo
ysr
parents:
2366
diff
changeset
|
3351 if (UseParallelGC || UseParallelOldGC) { |
dde920245681
6896099: Integrate CMS heap ergo with default heap sizing ergo
ysr
parents:
2366
diff
changeset
|
3352 set_parallel_gc_flags(); |
dde920245681
6896099: Integrate CMS heap ergo with default heap sizing ergo
ysr
parents:
2366
diff
changeset
|
3353 } else if (UseConcMarkSweepGC) { // should be done before ParNew check below |
10
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
3354 set_cms_and_parnew_gc_flags(); |
2368
dde920245681
6896099: Integrate CMS heap ergo with default heap sizing ergo
ysr
parents:
2366
diff
changeset
|
3355 } else if (UseParNewGC) { // skipped if CMS is set above |
dde920245681
6896099: Integrate CMS heap ergo with default heap sizing ergo
ysr
parents:
2366
diff
changeset
|
3356 set_parnew_gc_flags(); |
dde920245681
6896099: Integrate CMS heap ergo with default heap sizing ergo
ysr
parents:
2366
diff
changeset
|
3357 } else if (UseG1GC) { |
dde920245681
6896099: Integrate CMS heap ergo with default heap sizing ergo
ysr
parents:
2366
diff
changeset
|
3358 set_g1_gc_flags(); |
342
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
135
diff
changeset
|
3359 } |
7452
e0ab18eafbde
8003820: Deprecate untested and rarely used GC combinations
brutisso
parents:
7451
diff
changeset
|
3360 check_deprecated_gcs(); |
8001
db9981fd3124
8005915: Unify SERIALGC and INCLUDE_ALTERNATE_GCS
jprovino
parents:
7479
diff
changeset
|
3361 #else // INCLUDE_ALL_GCS |
0 | 3362 assert(verify_serial_gc_flags(), "SerialGC unset"); |
8001
db9981fd3124
8005915: Unify SERIALGC and INCLUDE_ALTERNATE_GCS
jprovino
parents:
7479
diff
changeset
|
3363 #endif // INCLUDE_ALL_GCS |
0 | 3364 |
3365 // Set bytecode rewriting flags | |
3366 set_bytecode_flags(); | |
3367 | |
3368 // Set flags if Aggressive optimization flags (-XX:+AggressiveOpts) enabled. | |
3369 set_aggressive_opts_flags(); | |
3370 | |
2239
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3371 // Turn off biased locking for locking debug mode flags, |
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3372 // which are subtlely different from each other but neither works with |
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3373 // biased locking. |
2331 | 3374 if (UseHeavyMonitors |
3375 #ifdef COMPILER1 | |
3376 || !UseFastLocking | |
3377 #endif // COMPILER1 | |
7154
5d0bb7d52783
changes to support Graal co-existing with the other HotSpot compiler(s) and being used for explicit compilation requests and code installation via the Graal API
Doug Simon <doug.simon@oracle.com>
parents:
7125
diff
changeset
|
3378 #ifdef GRAAL |
5d0bb7d52783
changes to support Graal co-existing with the other HotSpot compiler(s) and being used for explicit compilation requests and code installation via the Graal API
Doug Simon <doug.simon@oracle.com>
parents:
7125
diff
changeset
|
3379 || !GraalUseFastLocking |
5d0bb7d52783
changes to support Graal co-existing with the other HotSpot compiler(s) and being used for explicit compilation requests and code installation via the Graal API
Doug Simon <doug.simon@oracle.com>
parents:
7125
diff
changeset
|
3380 #endif // GRAAL |
2331 | 3381 ) { |
2239
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3382 if (!FLAG_IS_DEFAULT(UseBiasedLocking) && UseBiasedLocking) { |
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3383 // flag set to true on command line; warn the user that they |
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3384 // can't enable biased locking here |
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3385 warning("Biased Locking is not supported with locking debug flags" |
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3386 "; ignoring UseBiasedLocking flag." ); |
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3387 } |
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3388 UseBiasedLocking = false; |
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3389 } |
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3390 |
0 | 3391 #ifdef CC_INTERP |
1131 | 3392 // Clear flags not supported by the C++ interpreter |
3393 FLAG_SET_DEFAULT(ProfileInterpreter, false); | |
0 | 3394 FLAG_SET_DEFAULT(UseBiasedLocking, false); |
1131 | 3395 LP64_ONLY(FLAG_SET_DEFAULT(UseCompressedOops, false)); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6628
diff
changeset
|
3396 LP64_ONLY(FLAG_SET_DEFAULT(UseCompressedKlassPointers, false)); |
1131 | 3397 #endif // CC_INTERP |
3398 | |
420
a1980da045cc
6462850: generate biased locking code in C2 ideal graph
kvn
parents:
416
diff
changeset
|
3399 #ifdef COMPILER2 |
a1980da045cc
6462850: generate biased locking code in C2 ideal graph
kvn
parents:
416
diff
changeset
|
3400 if (!UseBiasedLocking || EmitSync != 0) { |
a1980da045cc
6462850: generate biased locking code in C2 ideal graph
kvn
parents:
416
diff
changeset
|
3401 UseOptoBiasInlining = false; |
a1980da045cc
6462850: generate biased locking code in C2 ideal graph
kvn
parents:
416
diff
changeset
|
3402 } |
4777 | 3403 if (!EliminateLocks) { |
3404 EliminateNestedLocks = false; | |
3405 } | |
7473 | 3406 if (!Inline) { |
3407 IncrementalInline = false; | |
3408 } | |
3409 #ifndef PRODUCT | |
3410 if (!IncrementalInline) { | |
3411 AlwaysIncrementalInline = false; | |
3412 } | |
3413 #endif | |
3414 if (IncrementalInline && FLAG_IS_DEFAULT(MaxNodeLimit)) { | |
3415 // incremental inlining: bump MaxNodeLimit | |
3416 FLAG_SET_DEFAULT(MaxNodeLimit, (intx)75000); | |
3417 } | |
420
a1980da045cc
6462850: generate biased locking code in C2 ideal graph
kvn
parents:
416
diff
changeset
|
3418 #endif |
a1980da045cc
6462850: generate biased locking code in C2 ideal graph
kvn
parents:
416
diff
changeset
|
3419 |
1155
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1150
diff
changeset
|
3420 if (PrintAssembly && FLAG_IS_DEFAULT(DebugNonSafepoints)) { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1150
diff
changeset
|
3421 warning("PrintAssembly is enabled; turning on DebugNonSafepoints to gain additional output"); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1150
diff
changeset
|
3422 DebugNonSafepoints = true; |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1150
diff
changeset
|
3423 } |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1150
diff
changeset
|
3424 |
1188
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents:
1161
diff
changeset
|
3425 #ifndef PRODUCT |
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents:
1161
diff
changeset
|
3426 if (CompileTheWorld) { |
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents:
1161
diff
changeset
|
3427 // Force NmethodSweeper to sweep whole CodeCache each time. |
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents:
1161
diff
changeset
|
3428 if (FLAG_IS_DEFAULT(NmethodSweepFraction)) { |
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents:
1161
diff
changeset
|
3429 NmethodSweepFraction = 1; |
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents:
1161
diff
changeset
|
3430 } |
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents:
1161
diff
changeset
|
3431 } |
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents:
1161
diff
changeset
|
3432 #endif |
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents:
1161
diff
changeset
|
3433 |
0 | 3434 if (PrintCommandLineFlags) { |
4773 | 3435 CommandLineFlags::printSetFlags(tty); |
0 | 3436 } |
3437 | |
1681
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
3438 // Apply CPU specific policy for the BiasedLocking |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
3439 if (UseBiasedLocking) { |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
3440 if (!VM_Version::use_biased_locking() && |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
3441 !(FLAG_IS_CMDLINE(UseBiasedLocking))) { |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
3442 UseBiasedLocking = false; |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
3443 } |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
3444 } |
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3445 |
2302
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3446 // set PauseAtExit if the gamma launcher was used and a debugger is attached |
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3447 // but only if not already set on the commandline |
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3448 if (Arguments::created_by_gamma_launcher() && os::is_debugger_attached()) { |
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3449 bool set = false; |
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3450 CommandLineFlags::wasSetOnCmdline("PauseAtExit", &set); |
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3451 if (!set) { |
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3452 FLAG_SET_DEFAULT(PauseAtExit, true); |
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3453 } |
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3454 } |
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3455 |
0 | 3456 return JNI_OK; |
3457 } | |
3458 | |
7177
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3459 jint Arguments::adjust_after_os() { |
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3460 #if INCLUDE_ALL_GCS |
7177
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3461 if (UseParallelGC || UseParallelOldGC) { |
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3462 if (UseNUMA) { |
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3463 if (FLAG_IS_DEFAULT(MinHeapDeltaBytes)) { |
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3464 FLAG_SET_DEFAULT(MinHeapDeltaBytes, 64*M); |
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3465 } |
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3466 // For those collectors or operating systems (eg, Windows) that do |
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3467 // not support full UseNUMA, we will map to UseNUMAInterleaving for now |
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3468 UseNUMAInterleaving = true; |
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3469 } |
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3470 } |
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3471 #endif // INCLUDE_ALL_GCS |
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3472 return JNI_OK; |
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3473 } |
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3474 |
0 | 3475 int Arguments::PropertyList_count(SystemProperty* pl) { |
3476 int count = 0; | |
3477 while(pl != NULL) { | |
3478 count++; | |
3479 pl = pl->next(); | |
3480 } | |
3481 return count; | |
3482 } | |
3483 | |
3484 const char* Arguments::PropertyList_get_value(SystemProperty *pl, const char* key) { | |
3485 assert(key != NULL, "just checking"); | |
3486 SystemProperty* prop; | |
3487 for (prop = pl; prop != NULL; prop = prop->next()) { | |
3488 if (strcmp(key, prop->key()) == 0) return prop->value(); | |
3489 } | |
3490 return NULL; | |
3491 } | |
3492 | |
3493 const char* Arguments::PropertyList_get_key_at(SystemProperty *pl, int index) { | |
3494 int count = 0; | |
3495 const char* ret_val = NULL; | |
3496 | |
3497 while(pl != NULL) { | |
3498 if(count >= index) { | |
3499 ret_val = pl->key(); | |
3500 break; | |
3501 } | |
3502 count++; | |
3503 pl = pl->next(); | |
3504 } | |
3505 | |
3506 return ret_val; | |
3507 } | |
3508 | |
3509 char* Arguments::PropertyList_get_value_at(SystemProperty* pl, int index) { | |
3510 int count = 0; | |
3511 char* ret_val = NULL; | |
3512 | |
3513 while(pl != NULL) { | |
3514 if(count >= index) { | |
3515 ret_val = pl->value(); | |
3516 break; | |
3517 } | |
3518 count++; | |
3519 pl = pl->next(); | |
3520 } | |
3521 | |
3522 return ret_val; | |
3523 } | |
3524 | |
3525 void Arguments::PropertyList_add(SystemProperty** plist, SystemProperty *new_p) { | |
3526 SystemProperty* p = *plist; | |
3527 if (p == NULL) { | |
3528 *plist = new_p; | |
3529 } else { | |
3530 while (p->next() != NULL) { | |
3531 p = p->next(); | |
3532 } | |
3533 p->set_next(new_p); | |
3534 } | |
3535 } | |
3536 | |
3537 void Arguments::PropertyList_add(SystemProperty** plist, const char* k, char* v) { | |
3538 if (plist == NULL) | |
3539 return; | |
3540 | |
3541 SystemProperty* new_p = new SystemProperty(k, v, true); | |
3542 PropertyList_add(plist, new_p); | |
3543 } | |
3544 | |
3545 // This add maintains unique property key in the list. | |
691 | 3546 void Arguments::PropertyList_unique_add(SystemProperty** plist, const char* k, char* v, jboolean append) { |
0 | 3547 if (plist == NULL) |
3548 return; | |
3549 | |
3550 // If property key exist then update with new value. | |
3551 SystemProperty* prop; | |
3552 for (prop = *plist; prop != NULL; prop = prop->next()) { | |
3553 if (strcmp(k, prop->key()) == 0) { | |
691 | 3554 if (append) { |
3555 prop->append_value(v); | |
3556 } else { | |
3557 prop->set_value(v); | |
3558 } | |
0 | 3559 return; |
3560 } | |
3561 } | |
3562 | |
3563 PropertyList_add(plist, k, v); | |
3564 } | |
3565 | |
3566 // Copies src into buf, replacing "%%" with "%" and "%p" with pid | |
3567 // Returns true if all of the source pointed by src has been copied over to | |
3568 // the destination buffer pointed by buf. Otherwise, returns false. | |
3569 // Notes: | |
3570 // 1. If the length (buflen) of the destination buffer excluding the | |
3571 // NULL terminator character is not long enough for holding the expanded | |
3572 // pid characters, it also returns false instead of returning the partially | |
3573 // expanded one. | |
3574 // 2. The passed in "buflen" should be large enough to hold the null terminator. | |
3575 bool Arguments::copy_expand_pid(const char* src, size_t srclen, | |
3576 char* buf, size_t buflen) { | |
3577 const char* p = src; | |
3578 char* b = buf; | |
3579 const char* src_end = &src[srclen]; | |
3580 char* buf_end = &buf[buflen - 1]; | |
3581 | |
3582 while (p < src_end && b < buf_end) { | |
3583 if (*p == '%') { | |
3584 switch (*(++p)) { | |
3585 case '%': // "%%" ==> "%" | |
3586 *b++ = *p++; | |
3587 break; | |
3588 case 'p': { // "%p" ==> current process id | |
3589 // buf_end points to the character before the last character so | |
3590 // that we could write '\0' to the end of the buffer. | |
3591 size_t buf_sz = buf_end - b + 1; | |
3592 int ret = jio_snprintf(b, buf_sz, "%d", os::current_process_id()); | |
3593 | |
3594 // if jio_snprintf fails or the buffer is not long enough to hold | |
3595 // the expanded pid, returns false. | |
3596 if (ret < 0 || ret >= (int)buf_sz) { | |
3597 return false; | |
3598 } else { | |
3599 b += ret; | |
3600 assert(*b == '\0', "fail in copy_expand_pid"); | |
3601 if (p == src_end && b == buf_end + 1) { | |
3602 // reach the end of the buffer. | |
3603 return true; | |
3604 } | |
3605 } | |
3606 p++; | |
3607 break; | |
3608 } | |
3609 default : | |
3610 *b++ = '%'; | |
3611 } | |
3612 } else { | |
3613 *b++ = *p++; | |
3614 } | |
3615 } | |
3616 *b = '\0'; | |
3617 return (p == src_end); // return false if not all of the source was copied | |
3618 } |