Mercurial > hg > truffle
annotate src/share/vm/runtime/arguments.cpp @ 10111:8373c19be854
8011621: live_ranges_in_separate_class.patch
Reviewed-by: kvn, roland
Contributed-by: niclas.adlertz@oracle.com
author | neliasso |
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date | Tue, 16 Apr 2013 10:08:41 +0200 |
parents | 480d934f62a8 |
children | 89e4d67fdd2a 63e31ce40bdb 3c0584fec1e6 |
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; | |
67 char* Arguments::_java_command = NULL; | |
68 SystemProperty* Arguments::_system_properties = NULL; | |
69 const char* Arguments::_gc_log_filename = NULL; | |
70 bool Arguments::_has_profile = false; | |
71 bool Arguments::_has_alloc_profile = false; | |
72 uintx Arguments::_min_heap_size = 0; | |
73 Arguments::Mode Arguments::_mode = _mixed; | |
74 bool Arguments::_java_compiler = false; | |
75 bool Arguments::_xdebug_mode = false; | |
76 const char* Arguments::_java_vendor_url_bug = DEFAULT_VENDOR_URL_BUG; | |
77 const char* Arguments::_sun_java_launcher = DEFAULT_JAVA_LAUNCHER; | |
78 int Arguments::_sun_java_launcher_pid = -1; | |
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79 bool Arguments::_created_by_gamma_launcher = false; |
0 | 80 |
81 // These parameters are reset in method parse_vm_init_args(JavaVMInitArgs*) | |
82 bool Arguments::_AlwaysCompileLoopMethods = AlwaysCompileLoopMethods; | |
83 bool Arguments::_UseOnStackReplacement = UseOnStackReplacement; | |
84 bool Arguments::_BackgroundCompilation = BackgroundCompilation; | |
85 bool Arguments::_ClipInlining = ClipInlining; | |
86 | |
87 char* Arguments::SharedArchivePath = NULL; | |
88 | |
89 AgentLibraryList Arguments::_libraryList; | |
90 AgentLibraryList Arguments::_agentList; | |
91 | |
92 abort_hook_t Arguments::_abort_hook = NULL; | |
93 exit_hook_t Arguments::_exit_hook = NULL; | |
94 vfprintf_hook_t Arguments::_vfprintf_hook = NULL; | |
95 | |
96 | |
97 SystemProperty *Arguments::_java_ext_dirs = NULL; | |
98 SystemProperty *Arguments::_java_endorsed_dirs = NULL; | |
99 SystemProperty *Arguments::_sun_boot_library_path = NULL; | |
100 SystemProperty *Arguments::_java_library_path = NULL; | |
101 SystemProperty *Arguments::_java_home = NULL; | |
102 SystemProperty *Arguments::_java_class_path = NULL; | |
103 SystemProperty *Arguments::_sun_boot_class_path = NULL; | |
104 | |
105 char* Arguments::_meta_index_path = NULL; | |
106 char* Arguments::_meta_index_dir = NULL; | |
107 | |
108 // Check if head of 'option' matches 'name', and sets 'tail' remaining part of option string | |
109 | |
110 static bool match_option(const JavaVMOption *option, const char* name, | |
111 const char** tail) { | |
112 int len = (int)strlen(name); | |
113 if (strncmp(option->optionString, name, len) == 0) { | |
114 *tail = option->optionString + len; | |
115 return true; | |
116 } else { | |
117 return false; | |
118 } | |
119 } | |
120 | |
121 static void logOption(const char* opt) { | |
122 if (PrintVMOptions) { | |
123 jio_fprintf(defaultStream::output_stream(), "VM option '%s'\n", opt); | |
124 } | |
125 } | |
126 | |
127 // Process java launcher properties. | |
128 void Arguments::process_sun_java_launcher_properties(JavaVMInitArgs* args) { | |
129 // See if sun.java.launcher or sun.java.launcher.pid is defined. | |
130 // Must do this before setting up other system properties, | |
131 // as some of them may depend on launcher type. | |
132 for (int index = 0; index < args->nOptions; index++) { | |
133 const JavaVMOption* option = args->options + index; | |
134 const char* tail; | |
135 | |
136 if (match_option(option, "-Dsun.java.launcher=", &tail)) { | |
137 process_java_launcher_argument(tail, option->extraInfo); | |
138 continue; | |
139 } | |
140 if (match_option(option, "-Dsun.java.launcher.pid=", &tail)) { | |
141 _sun_java_launcher_pid = atoi(tail); | |
142 continue; | |
143 } | |
144 } | |
145 } | |
146 | |
147 // Initialize system properties key and value. | |
148 void Arguments::init_system_properties() { | |
149 | |
150 PropertyList_add(&_system_properties, new SystemProperty("java.vm.specification.name", | |
151 "Java Virtual Machine Specification", false)); | |
152 PropertyList_add(&_system_properties, new SystemProperty("java.vm.version", VM_Version::vm_release(), false)); | |
153 PropertyList_add(&_system_properties, new SystemProperty("java.vm.name", VM_Version::vm_name(), false)); | |
154 PropertyList_add(&_system_properties, new SystemProperty("java.vm.info", VM_Version::vm_info_string(), true)); | |
155 | |
156 // following are JVMTI agent writeable properties. | |
157 // Properties values are set to NULL and they are | |
158 // os specific they are initialized in os::init_system_properties_values(). | |
159 _java_ext_dirs = new SystemProperty("java.ext.dirs", NULL, true); | |
160 _java_endorsed_dirs = new SystemProperty("java.endorsed.dirs", NULL, true); | |
161 _sun_boot_library_path = new SystemProperty("sun.boot.library.path", NULL, true); | |
162 _java_library_path = new SystemProperty("java.library.path", NULL, true); | |
163 _java_home = new SystemProperty("java.home", NULL, true); | |
164 _sun_boot_class_path = new SystemProperty("sun.boot.class.path", NULL, true); | |
165 | |
166 _java_class_path = new SystemProperty("java.class.path", "", true); | |
167 | |
168 // Add to System Property list. | |
169 PropertyList_add(&_system_properties, _java_ext_dirs); | |
170 PropertyList_add(&_system_properties, _java_endorsed_dirs); | |
171 PropertyList_add(&_system_properties, _sun_boot_library_path); | |
172 PropertyList_add(&_system_properties, _java_library_path); | |
173 PropertyList_add(&_system_properties, _java_home); | |
174 PropertyList_add(&_system_properties, _java_class_path); | |
175 PropertyList_add(&_system_properties, _sun_boot_class_path); | |
176 | |
177 // Set OS specific system properties values | |
178 os::init_system_properties_values(); | |
179 } | |
180 | |
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181 |
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182 // Update/Initialize System properties after JDK version number is known |
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183 void Arguments::init_version_specific_system_properties() { |
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184 enum { bufsz = 16 }; |
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185 char buffer[bufsz]; |
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186 const char* spec_vendor = "Sun Microsystems Inc."; |
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187 uint32_t spec_version = 0; |
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188 |
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189 if (JDK_Version::is_gte_jdk17x_version()) { |
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190 spec_vendor = "Oracle Corporation"; |
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191 spec_version = JDK_Version::current().major_version(); |
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192 } |
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193 jio_snprintf(buffer, bufsz, "1." UINT32_FORMAT, spec_version); |
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194 |
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195 PropertyList_add(&_system_properties, |
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196 new SystemProperty("java.vm.specification.vendor", spec_vendor, false)); |
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197 PropertyList_add(&_system_properties, |
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198 new SystemProperty("java.vm.specification.version", buffer, false)); |
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199 PropertyList_add(&_system_properties, |
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200 new SystemProperty("java.vm.vendor", VM_Version::vm_vendor(), false)); |
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201 } |
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202 |
242 | 203 /** |
204 * Provide a slightly more user-friendly way of eliminating -XX flags. | |
205 * When a flag is eliminated, it can be added to this list in order to | |
206 * continue accepting this flag on the command-line, while issuing a warning | |
207 * and ignoring the value. Once the JDK version reaches the 'accept_until' | |
208 * limit, we flatly refuse to admit the existence of the flag. This allows | |
209 * a flag to die correctly over JDK releases using HSX. | |
210 */ | |
211 typedef struct { | |
212 const char* name; | |
213 JDK_Version obsoleted_in; // when the flag went away | |
214 JDK_Version accept_until; // which version to start denying the existence | |
215 } ObsoleteFlag; | |
0 | 216 |
242 | 217 static ObsoleteFlag obsolete_jvm_flags[] = { |
218 { "UseTrainGC", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
219 { "UseSpecialLargeObjectHandling", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
220 { "UseOversizedCarHandling", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
221 { "TraceCarAllocation", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
222 { "PrintTrainGCProcessingStats", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
223 { "LogOfCarSpaceSize", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
224 { "OversizedCarThreshold", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
225 { "MinTickInterval", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
226 { "DefaultTickInterval", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
227 { "MaxTickInterval", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
228 { "DelayTickAdjustment", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
229 { "ProcessingToTenuringRatio", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
230 { "MinTrainLength", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
231 { "AppendRatio", JDK_Version::jdk_update(6,10), JDK_Version::jdk(7) }, | |
1064 | 232 { "DefaultMaxRAM", JDK_Version::jdk_update(6,18), JDK_Version::jdk(7) }, |
233 { "DefaultInitialRAMFraction", | |
234 JDK_Version::jdk_update(6,18), JDK_Version::jdk(7) }, | |
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235 { "UseDepthFirstScavengeOrder", |
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236 JDK_Version::jdk_update(6,22), JDK_Version::jdk(7) }, |
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237 { "HandlePromotionFailure", |
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238 JDK_Version::jdk_update(6,24), JDK_Version::jdk(8) }, |
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239 { "MaxLiveObjectEvacuationRatio", |
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240 JDK_Version::jdk_update(6,24), JDK_Version::jdk(8) }, |
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241 { "ForceSharedSpaces", JDK_Version::jdk_update(6,25), JDK_Version::jdk(8) }, |
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242 { "UseParallelOldGCCompacting", |
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243 JDK_Version::jdk_update(6,27), JDK_Version::jdk(8) }, |
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244 { "UseParallelDensePrefixUpdate", |
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245 JDK_Version::jdk_update(6,27), JDK_Version::jdk(8) }, |
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246 { "UseParallelOldGCDensePrefix", |
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247 JDK_Version::jdk_update(6,27), JDK_Version::jdk(8) }, |
2460 | 248 { "AllowTransitionalJSR292", JDK_Version::jdk(7), JDK_Version::jdk(8) }, |
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249 { "UseCompressedStrings", JDK_Version::jdk(7), JDK_Version::jdk(8) }, |
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250 { "CMSPermGenPrecleaningEnabled", JDK_Version::jdk(8), JDK_Version::jdk(9) }, |
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251 { "CMSTriggerPermRatio", JDK_Version::jdk(8), JDK_Version::jdk(9) }, |
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252 { "CMSInitiatingPermOccupancyFraction", JDK_Version::jdk(8), JDK_Version::jdk(9) }, |
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253 { "AdaptivePermSizeWeight", JDK_Version::jdk(8), JDK_Version::jdk(9) }, |
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254 { "PermGenPadding", JDK_Version::jdk(8), JDK_Version::jdk(9) }, |
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255 { "PermMarkSweepDeadRatio", JDK_Version::jdk(8), JDK_Version::jdk(9) }, |
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256 { "PermSize", JDK_Version::jdk(8), JDK_Version::jdk(9) }, |
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257 { "MaxPermSize", JDK_Version::jdk(8), JDK_Version::jdk(9) }, |
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258 { "MinPermHeapExpansion", JDK_Version::jdk(8), JDK_Version::jdk(9) }, |
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259 { "MaxPermHeapExpansion", JDK_Version::jdk(8), JDK_Version::jdk(9) }, |
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260 { "CMSRevisitStackSize", JDK_Version::jdk(8), JDK_Version::jdk(9) }, |
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261 { "PrintRevisitStats", JDK_Version::jdk(8), JDK_Version::jdk(9) }, |
6916 | 262 { "UseVectoredExceptions", JDK_Version::jdk(8), JDK_Version::jdk(9) }, |
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263 { "UseSplitVerifier", JDK_Version::jdk(8), JDK_Version::jdk(9) }, |
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264 #ifdef PRODUCT |
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265 { "DesiredMethodLimit", |
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266 JDK_Version::jdk_update(7, 2), JDK_Version::jdk(8) }, |
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267 #endif // PRODUCT |
242 | 268 { NULL, JDK_Version(0), JDK_Version(0) } |
269 }; | |
270 | |
271 // Returns true if the flag is obsolete and fits into the range specified | |
272 // for being ignored. In the case that the flag is ignored, the 'version' | |
273 // value is filled in with the version number when the flag became | |
274 // obsolete so that that value can be displayed to the user. | |
275 bool Arguments::is_newly_obsolete(const char *s, JDK_Version* version) { | |
0 | 276 int i = 0; |
242 | 277 assert(version != NULL, "Must provide a version buffer"); |
278 while (obsolete_jvm_flags[i].name != NULL) { | |
279 const ObsoleteFlag& flag_status = obsolete_jvm_flags[i]; | |
0 | 280 // <flag>=xxx form |
281 // [-|+]<flag> form | |
242 | 282 if ((strncmp(flag_status.name, s, strlen(flag_status.name)) == 0) || |
0 | 283 ((s[0] == '+' || s[0] == '-') && |
242 | 284 (strncmp(flag_status.name, &s[1], strlen(flag_status.name)) == 0))) { |
285 if (JDK_Version::current().compare(flag_status.accept_until) == -1) { | |
286 *version = flag_status.obsoleted_in; | |
287 return true; | |
288 } | |
0 | 289 } |
290 i++; | |
291 } | |
292 return false; | |
293 } | |
294 | |
295 // Constructs the system class path (aka boot class path) from the following | |
296 // components, in order: | |
297 // | |
298 // prefix // from -Xbootclasspath/p:... | |
299 // endorsed // the expansion of -Djava.endorsed.dirs=... | |
300 // base // from os::get_system_properties() or -Xbootclasspath= | |
301 // suffix // from -Xbootclasspath/a:... | |
302 // | |
303 // java.endorsed.dirs is a list of directories; any jar or zip files in the | |
304 // directories are added to the sysclasspath just before the base. | |
305 // | |
306 // This could be AllStatic, but it isn't needed after argument processing is | |
307 // complete. | |
308 class SysClassPath: public StackObj { | |
309 public: | |
310 SysClassPath(const char* base); | |
311 ~SysClassPath(); | |
312 | |
313 inline void set_base(const char* base); | |
314 inline void add_prefix(const char* prefix); | |
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315 inline void add_suffix_to_prefix(const char* suffix); |
0 | 316 inline void add_suffix(const char* suffix); |
317 inline void reset_path(const char* base); | |
318 | |
319 // Expand the jar/zip files in each directory listed by the java.endorsed.dirs | |
320 // property. Must be called after all command-line arguments have been | |
321 // processed (in particular, -Djava.endorsed.dirs=...) and before calling | |
322 // combined_path(). | |
323 void expand_endorsed(); | |
324 | |
325 inline const char* get_base() const { return _items[_scp_base]; } | |
326 inline const char* get_prefix() const { return _items[_scp_prefix]; } | |
327 inline const char* get_suffix() const { return _items[_scp_suffix]; } | |
328 inline const char* get_endorsed() const { return _items[_scp_endorsed]; } | |
329 | |
330 // Combine all the components into a single c-heap-allocated string; caller | |
331 // must free the string if/when no longer needed. | |
332 char* combined_path(); | |
333 | |
334 private: | |
335 // Utility routines. | |
336 static char* add_to_path(const char* path, const char* str, bool prepend); | |
337 static char* add_jars_to_path(char* path, const char* directory); | |
338 | |
339 inline void reset_item_at(int index); | |
340 | |
341 // Array indices for the items that make up the sysclasspath. All except the | |
342 // base are allocated in the C heap and freed by this class. | |
343 enum { | |
344 _scp_prefix, // from -Xbootclasspath/p:... | |
345 _scp_endorsed, // the expansion of -Djava.endorsed.dirs=... | |
346 _scp_base, // the default sysclasspath | |
347 _scp_suffix, // from -Xbootclasspath/a:... | |
348 _scp_nitems // the number of items, must be last. | |
349 }; | |
350 | |
351 const char* _items[_scp_nitems]; | |
352 DEBUG_ONLY(bool _expansion_done;) | |
353 }; | |
354 | |
355 SysClassPath::SysClassPath(const char* base) { | |
356 memset(_items, 0, sizeof(_items)); | |
357 _items[_scp_base] = base; | |
358 DEBUG_ONLY(_expansion_done = false;) | |
359 } | |
360 | |
361 SysClassPath::~SysClassPath() { | |
362 // Free everything except the base. | |
363 for (int i = 0; i < _scp_nitems; ++i) { | |
364 if (i != _scp_base) reset_item_at(i); | |
365 } | |
366 DEBUG_ONLY(_expansion_done = false;) | |
367 } | |
368 | |
369 inline void SysClassPath::set_base(const char* base) { | |
370 _items[_scp_base] = base; | |
371 } | |
372 | |
373 inline void SysClassPath::add_prefix(const char* prefix) { | |
374 _items[_scp_prefix] = add_to_path(_items[_scp_prefix], prefix, true); | |
375 } | |
376 | |
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377 inline void SysClassPath::add_suffix_to_prefix(const char* suffix) { |
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378 _items[_scp_prefix] = add_to_path(_items[_scp_prefix], suffix, false); |
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379 } |
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380 |
0 | 381 inline void SysClassPath::add_suffix(const char* suffix) { |
382 _items[_scp_suffix] = add_to_path(_items[_scp_suffix], suffix, false); | |
383 } | |
384 | |
385 inline void SysClassPath::reset_item_at(int index) { | |
386 assert(index < _scp_nitems && index != _scp_base, "just checking"); | |
387 if (_items[index] != NULL) { | |
6197 | 388 FREE_C_HEAP_ARRAY(char, _items[index], mtInternal); |
0 | 389 _items[index] = NULL; |
390 } | |
391 } | |
392 | |
393 inline void SysClassPath::reset_path(const char* base) { | |
394 // Clear the prefix and suffix. | |
395 reset_item_at(_scp_prefix); | |
396 reset_item_at(_scp_suffix); | |
397 set_base(base); | |
398 } | |
399 | |
400 //------------------------------------------------------------------------------ | |
401 | |
402 void SysClassPath::expand_endorsed() { | |
403 assert(_items[_scp_endorsed] == NULL, "can only be called once."); | |
404 | |
405 const char* path = Arguments::get_property("java.endorsed.dirs"); | |
406 if (path == NULL) { | |
407 path = Arguments::get_endorsed_dir(); | |
408 assert(path != NULL, "no default for java.endorsed.dirs"); | |
409 } | |
410 | |
411 char* expanded_path = NULL; | |
412 const char separator = *os::path_separator(); | |
413 const char* const end = path + strlen(path); | |
414 while (path < end) { | |
415 const char* tmp_end = strchr(path, separator); | |
416 if (tmp_end == NULL) { | |
417 expanded_path = add_jars_to_path(expanded_path, path); | |
418 path = end; | |
419 } else { | |
6197 | 420 char* dirpath = NEW_C_HEAP_ARRAY(char, tmp_end - path + 1, mtInternal); |
0 | 421 memcpy(dirpath, path, tmp_end - path); |
422 dirpath[tmp_end - path] = '\0'; | |
423 expanded_path = add_jars_to_path(expanded_path, dirpath); | |
6197 | 424 FREE_C_HEAP_ARRAY(char, dirpath, mtInternal); |
0 | 425 path = tmp_end + 1; |
426 } | |
427 } | |
428 _items[_scp_endorsed] = expanded_path; | |
429 DEBUG_ONLY(_expansion_done = true;) | |
430 } | |
431 | |
432 // Combine the bootclasspath elements, some of which may be null, into a single | |
433 // c-heap-allocated string. | |
434 char* SysClassPath::combined_path() { | |
435 assert(_items[_scp_base] != NULL, "empty default sysclasspath"); | |
436 assert(_expansion_done, "must call expand_endorsed() first."); | |
437 | |
438 size_t lengths[_scp_nitems]; | |
439 size_t total_len = 0; | |
440 | |
441 const char separator = *os::path_separator(); | |
442 | |
443 // Get the lengths. | |
444 int i; | |
445 for (i = 0; i < _scp_nitems; ++i) { | |
446 if (_items[i] != NULL) { | |
447 lengths[i] = strlen(_items[i]); | |
448 // Include space for the separator char (or a NULL for the last item). | |
449 total_len += lengths[i] + 1; | |
450 } | |
451 } | |
452 assert(total_len > 0, "empty sysclasspath not allowed"); | |
453 | |
454 // Copy the _items to a single string. | |
6197 | 455 char* cp = NEW_C_HEAP_ARRAY(char, total_len, mtInternal); |
0 | 456 char* cp_tmp = cp; |
457 for (i = 0; i < _scp_nitems; ++i) { | |
458 if (_items[i] != NULL) { | |
459 memcpy(cp_tmp, _items[i], lengths[i]); | |
460 cp_tmp += lengths[i]; | |
461 *cp_tmp++ = separator; | |
462 } | |
463 } | |
464 *--cp_tmp = '\0'; // Replace the extra separator. | |
465 return cp; | |
466 } | |
467 | |
468 // Note: path must be c-heap-allocated (or NULL); it is freed if non-null. | |
469 char* | |
470 SysClassPath::add_to_path(const char* path, const char* str, bool prepend) { | |
471 char *cp; | |
472 | |
473 assert(str != NULL, "just checking"); | |
474 if (path == NULL) { | |
475 size_t len = strlen(str) + 1; | |
6197 | 476 cp = NEW_C_HEAP_ARRAY(char, len, mtInternal); |
0 | 477 memcpy(cp, str, len); // copy the trailing null |
478 } else { | |
479 const char separator = *os::path_separator(); | |
480 size_t old_len = strlen(path); | |
481 size_t str_len = strlen(str); | |
482 size_t len = old_len + str_len + 2; | |
483 | |
484 if (prepend) { | |
6197 | 485 cp = NEW_C_HEAP_ARRAY(char, len, mtInternal); |
0 | 486 char* cp_tmp = cp; |
487 memcpy(cp_tmp, str, str_len); | |
488 cp_tmp += str_len; | |
489 *cp_tmp = separator; | |
490 memcpy(++cp_tmp, path, old_len + 1); // copy the trailing null | |
6197 | 491 FREE_C_HEAP_ARRAY(char, path, mtInternal); |
0 | 492 } else { |
6197 | 493 cp = REALLOC_C_HEAP_ARRAY(char, path, len, mtInternal); |
0 | 494 char* cp_tmp = cp + old_len; |
495 *cp_tmp = separator; | |
496 memcpy(++cp_tmp, str, str_len + 1); // copy the trailing null | |
497 } | |
498 } | |
499 return cp; | |
500 } | |
501 | |
502 // Scan the directory and append any jar or zip files found to path. | |
503 // Note: path must be c-heap-allocated (or NULL); it is freed if non-null. | |
504 char* SysClassPath::add_jars_to_path(char* path, const char* directory) { | |
505 DIR* dir = os::opendir(directory); | |
506 if (dir == NULL) return path; | |
507 | |
508 char dir_sep[2] = { '\0', '\0' }; | |
509 size_t directory_len = strlen(directory); | |
510 const char fileSep = *os::file_separator(); | |
511 if (directory[directory_len - 1] != fileSep) dir_sep[0] = fileSep; | |
512 | |
513 /* Scan the directory for jars/zips, appending them to path. */ | |
514 struct dirent *entry; | |
6197 | 515 char *dbuf = NEW_C_HEAP_ARRAY(char, os::readdir_buf_size(directory), mtInternal); |
0 | 516 while ((entry = os::readdir(dir, (dirent *) dbuf)) != NULL) { |
517 const char* name = entry->d_name; | |
518 const char* ext = name + strlen(name) - 4; | |
519 bool isJarOrZip = ext > name && | |
520 (os::file_name_strcmp(ext, ".jar") == 0 || | |
521 os::file_name_strcmp(ext, ".zip") == 0); | |
522 if (isJarOrZip) { | |
6197 | 523 char* jarpath = NEW_C_HEAP_ARRAY(char, directory_len + 2 + strlen(name), mtInternal); |
0 | 524 sprintf(jarpath, "%s%s%s", directory, dir_sep, name); |
525 path = add_to_path(path, jarpath, false); | |
6197 | 526 FREE_C_HEAP_ARRAY(char, jarpath, mtInternal); |
0 | 527 } |
528 } | |
6197 | 529 FREE_C_HEAP_ARRAY(char, dbuf, mtInternal); |
0 | 530 os::closedir(dir); |
531 return path; | |
532 } | |
533 | |
534 // Parses a memory size specification string. | |
489
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535 static bool atomull(const char *s, julong* result) { |
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536 julong n = 0; |
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537 int args_read = sscanf(s, JULONG_FORMAT, &n); |
0 | 538 if (args_read != 1) { |
539 return false; | |
540 } | |
541 while (*s != '\0' && isdigit(*s)) { | |
542 s++; | |
543 } | |
544 // 4705540: illegal if more characters are found after the first non-digit | |
545 if (strlen(s) > 1) { | |
546 return false; | |
547 } | |
548 switch (*s) { | |
549 case 'T': case 't': | |
550 *result = n * G * K; | |
489
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551 // Check for overflow. |
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552 if (*result/((julong)G * K) != n) return false; |
0 | 553 return true; |
554 case 'G': case 'g': | |
555 *result = n * G; | |
489
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556 if (*result/G != n) return false; |
0 | 557 return true; |
558 case 'M': case 'm': | |
559 *result = n * M; | |
489
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560 if (*result/M != n) return false; |
0 | 561 return true; |
562 case 'K': case 'k': | |
563 *result = n * K; | |
489
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564 if (*result/K != n) return false; |
0 | 565 return true; |
566 case '\0': | |
567 *result = n; | |
568 return true; | |
569 default: | |
570 return false; | |
571 } | |
572 } | |
573 | |
489
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574 Arguments::ArgsRange Arguments::check_memory_size(julong size, julong min_size) { |
0 | 575 if (size < min_size) return arg_too_small; |
576 // Check that size will fit in a size_t (only relevant on 32-bit) | |
489
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577 if (size > max_uintx) return arg_too_big; |
0 | 578 return arg_in_range; |
579 } | |
580 | |
581 // Describe an argument out of range error | |
582 void Arguments::describe_range_error(ArgsRange errcode) { | |
583 switch(errcode) { | |
584 case arg_too_big: | |
585 jio_fprintf(defaultStream::error_stream(), | |
586 "The specified size exceeds the maximum " | |
587 "representable size.\n"); | |
588 break; | |
589 case arg_too_small: | |
590 case arg_unreadable: | |
591 case arg_in_range: | |
592 // do nothing for now | |
593 break; | |
594 default: | |
595 ShouldNotReachHere(); | |
596 } | |
597 } | |
598 | |
599 static bool set_bool_flag(char* name, bool value, FlagValueOrigin origin) { | |
600 return CommandLineFlags::boolAtPut(name, &value, origin); | |
601 } | |
602 | |
603 static bool set_fp_numeric_flag(char* name, char* value, FlagValueOrigin origin) { | |
604 double v; | |
605 if (sscanf(value, "%lf", &v) != 1) { | |
606 return false; | |
607 } | |
608 | |
609 if (CommandLineFlags::doubleAtPut(name, &v, origin)) { | |
610 return true; | |
611 } | |
612 return false; | |
613 } | |
614 | |
615 static bool set_numeric_flag(char* name, char* value, FlagValueOrigin origin) { | |
489
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616 julong v; |
0 | 617 intx intx_v; |
618 bool is_neg = false; | |
489
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619 // Check the sign first since atomull() parses only unsigned values. |
0 | 620 if (*value == '-') { |
621 if (!CommandLineFlags::intxAt(name, &intx_v)) { | |
622 return false; | |
623 } | |
624 value++; | |
625 is_neg = true; | |
626 } | |
489
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627 if (!atomull(value, &v)) { |
0 | 628 return false; |
629 } | |
630 intx_v = (intx) v; | |
631 if (is_neg) { | |
632 intx_v = -intx_v; | |
633 } | |
634 if (CommandLineFlags::intxAtPut(name, &intx_v, origin)) { | |
635 return true; | |
636 } | |
637 uintx uintx_v = (uintx) v; | |
638 if (!is_neg && CommandLineFlags::uintxAtPut(name, &uintx_v, origin)) { | |
639 return true; | |
640 } | |
1064 | 641 uint64_t uint64_t_v = (uint64_t) v; |
642 if (!is_neg && CommandLineFlags::uint64_tAtPut(name, &uint64_t_v, origin)) { | |
643 return true; | |
644 } | |
0 | 645 return false; |
646 } | |
647 | |
648 static bool set_string_flag(char* name, const char* value, FlagValueOrigin origin) { | |
649 if (!CommandLineFlags::ccstrAtPut(name, &value, origin)) return false; | |
650 // Contract: CommandLineFlags always returns a pointer that needs freeing. | |
6197 | 651 FREE_C_HEAP_ARRAY(char, value, mtInternal); |
0 | 652 return true; |
653 } | |
654 | |
655 static bool append_to_string_flag(char* name, const char* new_value, FlagValueOrigin origin) { | |
656 const char* old_value = ""; | |
657 if (!CommandLineFlags::ccstrAt(name, &old_value)) return false; | |
658 size_t old_len = old_value != NULL ? strlen(old_value) : 0; | |
659 size_t new_len = strlen(new_value); | |
660 const char* value; | |
661 char* free_this_too = NULL; | |
662 if (old_len == 0) { | |
663 value = new_value; | |
664 } else if (new_len == 0) { | |
665 value = old_value; | |
666 } else { | |
6197 | 667 char* buf = NEW_C_HEAP_ARRAY(char, old_len + 1 + new_len + 1, mtInternal); |
0 | 668 // each new setting adds another LINE to the switch: |
669 sprintf(buf, "%s\n%s", old_value, new_value); | |
670 value = buf; | |
671 free_this_too = buf; | |
672 } | |
673 (void) CommandLineFlags::ccstrAtPut(name, &value, origin); | |
674 // CommandLineFlags always returns a pointer that needs freeing. | |
6197 | 675 FREE_C_HEAP_ARRAY(char, value, mtInternal); |
0 | 676 if (free_this_too != NULL) { |
677 // CommandLineFlags made its own copy, so I must delete my own temp. buffer. | |
6197 | 678 FREE_C_HEAP_ARRAY(char, free_this_too, mtInternal); |
0 | 679 } |
680 return true; | |
681 } | |
682 | |
683 bool Arguments::parse_argument(const char* arg, FlagValueOrigin origin) { | |
684 | |
685 // range of acceptable characters spelled out for portability reasons | |
686 #define NAME_RANGE "[abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789_]" | |
687 #define BUFLEN 255 | |
688 char name[BUFLEN+1]; | |
689 char dummy; | |
690 | |
691 if (sscanf(arg, "-%" XSTR(BUFLEN) NAME_RANGE "%c", name, &dummy) == 1) { | |
692 return set_bool_flag(name, false, origin); | |
693 } | |
694 if (sscanf(arg, "+%" XSTR(BUFLEN) NAME_RANGE "%c", name, &dummy) == 1) { | |
695 return set_bool_flag(name, true, origin); | |
696 } | |
697 | |
698 char punct; | |
699 if (sscanf(arg, "%" XSTR(BUFLEN) NAME_RANGE "%c", name, &punct) == 2 && punct == '=') { | |
700 const char* value = strchr(arg, '=') + 1; | |
701 Flag* flag = Flag::find_flag(name, strlen(name)); | |
702 if (flag != NULL && flag->is_ccstr()) { | |
703 if (flag->ccstr_accumulates()) { | |
704 return append_to_string_flag(name, value, origin); | |
705 } else { | |
706 if (value[0] == '\0') { | |
707 value = NULL; | |
708 } | |
709 return set_string_flag(name, value, origin); | |
710 } | |
711 } | |
712 } | |
713 | |
714 if (sscanf(arg, "%" XSTR(BUFLEN) NAME_RANGE ":%c", name, &punct) == 2 && punct == '=') { | |
715 const char* value = strchr(arg, '=') + 1; | |
716 // -XX:Foo:=xxx will reset the string flag to the given value. | |
717 if (value[0] == '\0') { | |
718 value = NULL; | |
719 } | |
720 return set_string_flag(name, value, origin); | |
721 } | |
722 | |
723 #define SIGNED_FP_NUMBER_RANGE "[-0123456789.]" | |
724 #define SIGNED_NUMBER_RANGE "[-0123456789]" | |
725 #define NUMBER_RANGE "[0123456789]" | |
726 char value[BUFLEN + 1]; | |
727 char value2[BUFLEN + 1]; | |
728 if (sscanf(arg, "%" XSTR(BUFLEN) NAME_RANGE "=" "%" XSTR(BUFLEN) SIGNED_NUMBER_RANGE "." "%" XSTR(BUFLEN) NUMBER_RANGE "%c", name, value, value2, &dummy) == 3) { | |
729 // Looks like a floating-point number -- try again with more lenient format string | |
730 if (sscanf(arg, "%" XSTR(BUFLEN) NAME_RANGE "=" "%" XSTR(BUFLEN) SIGNED_FP_NUMBER_RANGE "%c", name, value, &dummy) == 2) { | |
731 return set_fp_numeric_flag(name, value, origin); | |
732 } | |
733 } | |
734 | |
735 #define VALUE_RANGE "[-kmgtKMGT0123456789]" | |
736 if (sscanf(arg, "%" XSTR(BUFLEN) NAME_RANGE "=" "%" XSTR(BUFLEN) VALUE_RANGE "%c", name, value, &dummy) == 2) { | |
737 return set_numeric_flag(name, value, origin); | |
738 } | |
739 | |
740 return false; | |
741 } | |
742 | |
743 void Arguments::add_string(char*** bldarray, int* count, const char* arg) { | |
744 assert(bldarray != NULL, "illegal argument"); | |
745 | |
746 if (arg == NULL) { | |
747 return; | |
748 } | |
749 | |
750 int index = *count; | |
751 | |
752 // expand the array and add arg to the last element | |
753 (*count)++; | |
754 if (*bldarray == NULL) { | |
6197 | 755 *bldarray = NEW_C_HEAP_ARRAY(char*, *count, mtInternal); |
0 | 756 } else { |
6197 | 757 *bldarray = REALLOC_C_HEAP_ARRAY(char*, *bldarray, *count, mtInternal); |
0 | 758 } |
759 (*bldarray)[index] = strdup(arg); | |
760 } | |
761 | |
762 void Arguments::build_jvm_args(const char* arg) { | |
763 add_string(&_jvm_args_array, &_num_jvm_args, arg); | |
764 } | |
765 | |
766 void Arguments::build_jvm_flags(const char* arg) { | |
767 add_string(&_jvm_flags_array, &_num_jvm_flags, arg); | |
768 } | |
769 | |
770 // utility function to return a string that concatenates all | |
771 // strings in a given char** array | |
772 const char* Arguments::build_resource_string(char** args, int count) { | |
773 if (args == NULL || count == 0) { | |
774 return NULL; | |
775 } | |
776 size_t length = strlen(args[0]) + 1; // add 1 for the null terminator | |
777 for (int i = 1; i < count; i++) { | |
778 length += strlen(args[i]) + 1; // add 1 for a space | |
779 } | |
780 char* s = NEW_RESOURCE_ARRAY(char, length); | |
781 strcpy(s, args[0]); | |
782 for (int j = 1; j < count; j++) { | |
783 strcat(s, " "); | |
784 strcat(s, args[j]); | |
785 } | |
786 return (const char*) s; | |
787 } | |
788 | |
789 void Arguments::print_on(outputStream* st) { | |
790 st->print_cr("VM Arguments:"); | |
791 if (num_jvm_flags() > 0) { | |
792 st->print("jvm_flags: "); print_jvm_flags_on(st); | |
793 } | |
794 if (num_jvm_args() > 0) { | |
795 st->print("jvm_args: "); print_jvm_args_on(st); | |
796 } | |
797 st->print_cr("java_command: %s", java_command() ? java_command() : "<unknown>"); | |
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798 if (_java_class_path != NULL) { |
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799 char* path = _java_class_path->value(); |
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800 st->print_cr("java_class_path (initial): %s", strlen(path) == 0 ? "<not set>" : path ); |
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801 } |
0 | 802 st->print_cr("Launcher Type: %s", _sun_java_launcher); |
803 } | |
804 | |
805 void Arguments::print_jvm_flags_on(outputStream* st) { | |
806 if (_num_jvm_flags > 0) { | |
807 for (int i=0; i < _num_jvm_flags; i++) { | |
808 st->print("%s ", _jvm_flags_array[i]); | |
809 } | |
810 st->print_cr(""); | |
811 } | |
812 } | |
813 | |
814 void Arguments::print_jvm_args_on(outputStream* st) { | |
815 if (_num_jvm_args > 0) { | |
816 for (int i=0; i < _num_jvm_args; i++) { | |
817 st->print("%s ", _jvm_args_array[i]); | |
818 } | |
819 st->print_cr(""); | |
820 } | |
821 } | |
822 | |
242 | 823 bool Arguments::process_argument(const char* arg, |
824 jboolean ignore_unrecognized, FlagValueOrigin origin) { | |
825 | |
826 JDK_Version since = JDK_Version(); | |
0 | 827 |
3250 | 828 if (parse_argument(arg, origin) || ignore_unrecognized) { |
829 return true; | |
0 | 830 } |
3250 | 831 |
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832 bool has_plus_minus = (*arg == '+' || *arg == '-'); |
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833 const char* const argname = has_plus_minus ? arg + 1 : arg; |
3250 | 834 if (is_newly_obsolete(arg, &since)) { |
835 char version[256]; | |
836 since.to_string(version, sizeof(version)); | |
837 warning("ignoring option %s; support was removed in %s", argname, version); | |
838 return true; | |
839 } | |
840 | |
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841 // For locked flags, report a custom error message if available. |
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842 // Otherwise, report the standard unrecognized VM option. |
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843 |
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844 size_t arg_len; |
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845 const char* equal_sign = strchr(argname, '='); |
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846 if (equal_sign == NULL) { |
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847 arg_len = strlen(argname); |
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848 } else { |
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849 arg_len = equal_sign - argname; |
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850 } |
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851 |
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852 Flag* found_flag = Flag::find_flag((char*)argname, arg_len, true); |
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853 if (found_flag != NULL) { |
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854 char locked_message_buf[BUFLEN]; |
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855 found_flag->get_locked_message(locked_message_buf, BUFLEN); |
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856 if (strlen(locked_message_buf) == 0) { |
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857 if (found_flag->is_bool() && !has_plus_minus) { |
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858 jio_fprintf(defaultStream::error_stream(), |
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859 "Missing +/- setting for VM option '%s'\n", argname); |
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860 } else if (!found_flag->is_bool() && has_plus_minus) { |
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861 jio_fprintf(defaultStream::error_stream(), |
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862 "Unexpected +/- setting in VM option '%s'\n", argname); |
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863 } else { |
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864 jio_fprintf(defaultStream::error_stream(), |
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865 "Improperly specified VM option '%s'\n", argname); |
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866 } |
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867 } else { |
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868 jio_fprintf(defaultStream::error_stream(), "%s", locked_message_buf); |
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869 } |
6017 | 870 } else { |
871 jio_fprintf(defaultStream::error_stream(), | |
872 "Unrecognized VM option '%s'\n", argname); | |
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873 } |
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874 |
3250 | 875 // allow for commandline "commenting out" options like -XX:#+Verbose |
876 return arg[0] == '#'; | |
0 | 877 } |
878 | |
879 bool Arguments::process_settings_file(const char* file_name, bool should_exist, jboolean ignore_unrecognized) { | |
880 FILE* stream = fopen(file_name, "rb"); | |
881 if (stream == NULL) { | |
882 if (should_exist) { | |
883 jio_fprintf(defaultStream::error_stream(), | |
884 "Could not open settings file %s\n", file_name); | |
885 return false; | |
886 } else { | |
887 return true; | |
888 } | |
889 } | |
890 | |
891 char token[1024]; | |
892 int pos = 0; | |
893 | |
894 bool in_white_space = true; | |
895 bool in_comment = false; | |
896 bool in_quote = false; | |
897 char quote_c = 0; | |
898 bool result = true; | |
899 | |
900 int c = getc(stream); | |
6901 | 901 while(c != EOF && pos < (int)(sizeof(token)-1)) { |
0 | 902 if (in_white_space) { |
903 if (in_comment) { | |
904 if (c == '\n') in_comment = false; | |
905 } else { | |
906 if (c == '#') in_comment = true; | |
907 else if (!isspace(c)) { | |
908 in_white_space = false; | |
909 token[pos++] = c; | |
910 } | |
911 } | |
912 } else { | |
913 if (c == '\n' || (!in_quote && isspace(c))) { | |
914 // token ends at newline, or at unquoted whitespace | |
915 // this allows a way to include spaces in string-valued options | |
916 token[pos] = '\0'; | |
917 logOption(token); | |
918 result &= process_argument(token, ignore_unrecognized, CONFIG_FILE); | |
919 build_jvm_flags(token); | |
920 pos = 0; | |
921 in_white_space = true; | |
922 in_quote = false; | |
923 } else if (!in_quote && (c == '\'' || c == '"')) { | |
924 in_quote = true; | |
925 quote_c = c; | |
926 } else if (in_quote && (c == quote_c)) { | |
927 in_quote = false; | |
928 } else { | |
929 token[pos++] = c; | |
930 } | |
931 } | |
932 c = getc(stream); | |
933 } | |
934 if (pos > 0) { | |
935 token[pos] = '\0'; | |
936 result &= process_argument(token, ignore_unrecognized, CONFIG_FILE); | |
937 build_jvm_flags(token); | |
938 } | |
939 fclose(stream); | |
940 return result; | |
941 } | |
942 | |
943 //============================================================================================================= | |
944 // Parsing of properties (-D) | |
945 | |
946 const char* Arguments::get_property(const char* key) { | |
947 return PropertyList_get_value(system_properties(), key); | |
948 } | |
949 | |
950 bool Arguments::add_property(const char* prop) { | |
951 const char* eq = strchr(prop, '='); | |
952 char* key; | |
953 // ns must be static--its address may be stored in a SystemProperty object. | |
954 const static char ns[1] = {0}; | |
955 char* value = (char *)ns; | |
956 | |
957 size_t key_len = (eq == NULL) ? strlen(prop) : (eq - prop); | |
6197 | 958 key = AllocateHeap(key_len + 1, mtInternal); |
0 | 959 strncpy(key, prop, key_len); |
960 key[key_len] = '\0'; | |
961 | |
962 if (eq != NULL) { | |
963 size_t value_len = strlen(prop) - key_len - 1; | |
6197 | 964 value = AllocateHeap(value_len + 1, mtInternal); |
0 | 965 strncpy(value, &prop[key_len + 1], value_len + 1); |
966 } | |
967 | |
968 if (strcmp(key, "java.compiler") == 0) { | |
969 process_java_compiler_argument(value); | |
970 FreeHeap(key); | |
971 if (eq != NULL) { | |
972 FreeHeap(value); | |
973 } | |
974 return true; | |
691 | 975 } else if (strcmp(key, "sun.java.command") == 0) { |
0 | 976 _java_command = value; |
977 | |
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978 // Record value in Arguments, but let it get passed to Java. |
691 | 979 } else if (strcmp(key, "sun.java.launcher.pid") == 0) { |
0 | 980 // launcher.pid property is private and is processed |
981 // in process_sun_java_launcher_properties(); | |
982 // the sun.java.launcher property is passed on to the java application | |
983 FreeHeap(key); | |
984 if (eq != NULL) { | |
985 FreeHeap(value); | |
986 } | |
987 return true; | |
691 | 988 } else if (strcmp(key, "java.vendor.url.bug") == 0) { |
0 | 989 // save it in _java_vendor_url_bug, so JVM fatal error handler can access |
990 // its value without going through the property list or making a Java call. | |
991 _java_vendor_url_bug = value; | |
691 | 992 } else if (strcmp(key, "sun.boot.library.path") == 0) { |
993 PropertyList_unique_add(&_system_properties, key, value, true); | |
994 return true; | |
0 | 995 } |
996 // Create new property and add at the end of the list | |
997 PropertyList_unique_add(&_system_properties, key, value); | |
998 return true; | |
999 } | |
1000 | |
1001 //=========================================================================================================== | |
1002 // Setting int/mixed/comp mode flags | |
1003 | |
1004 void Arguments::set_mode_flags(Mode mode) { | |
1005 // Set up default values for all flags. | |
1006 // If you add a flag to any of the branches below, | |
1007 // add a default value for it here. | |
1008 set_java_compiler(false); | |
1009 _mode = mode; | |
1010 | |
1011 // Ensure Agent_OnLoad has the correct initial values. | |
1012 // This may not be the final mode; mode may change later in onload phase. | |
1013 PropertyList_unique_add(&_system_properties, "java.vm.info", | |
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1014 (char*)VM_Version::vm_info_string(), false); |
0 | 1015 |
1016 UseInterpreter = true; | |
1017 UseCompiler = true; | |
1018 UseLoopCounter = true; | |
1019 | |
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1020 #ifndef ZERO |
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1021 // Turn these off for mixed and comp. Leave them on for Zero. |
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1022 if (FLAG_IS_DEFAULT(UseFastAccessorMethods)) { |
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1023 UseFastAccessorMethods = (mode == _int); |
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1024 } |
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1025 if (FLAG_IS_DEFAULT(UseFastEmptyMethods)) { |
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1026 UseFastEmptyMethods = (mode == _int); |
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1027 } |
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1028 #endif |
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1029 |
0 | 1030 // Default values may be platform/compiler dependent - |
1031 // use the saved values | |
1032 ClipInlining = Arguments::_ClipInlining; | |
1033 AlwaysCompileLoopMethods = Arguments::_AlwaysCompileLoopMethods; | |
1034 UseOnStackReplacement = Arguments::_UseOnStackReplacement; | |
1035 BackgroundCompilation = Arguments::_BackgroundCompilation; | |
1036 | |
1037 // Change from defaults based on mode | |
1038 switch (mode) { | |
1039 default: | |
1040 ShouldNotReachHere(); | |
1041 break; | |
1042 case _int: | |
1043 UseCompiler = false; | |
1044 UseLoopCounter = false; | |
1045 AlwaysCompileLoopMethods = false; | |
1046 UseOnStackReplacement = false; | |
1047 break; | |
1048 case _mixed: | |
1049 // same as default | |
1050 break; | |
1051 case _comp: | |
1052 UseInterpreter = false; | |
1053 BackgroundCompilation = false; | |
1054 ClipInlining = false; | |
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1055 // Be much more aggressive in tiered mode with -Xcomp and exercise C2 more. |
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1056 // We will first compile a level 3 version (C1 with full profiling), then do one invocation of it and |
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1057 // compile a level 4 (C2) and then continue executing it. |
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1058 if (TieredCompilation) { |
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1059 Tier3InvokeNotifyFreqLog = 0; |
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1060 Tier4InvocationThreshold = 0; |
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1061 } |
0 | 1062 break; |
1063 } | |
1064 } | |
1065 | |
1066 // Conflict: required to use shared spaces (-Xshare:on), but | |
1067 // incompatible command line options were chosen. | |
1068 | |
1069 static void no_shared_spaces() { | |
1070 if (RequireSharedSpaces) { | |
1071 jio_fprintf(defaultStream::error_stream(), | |
1072 "Class data sharing is inconsistent with other specified options.\n"); | |
1073 vm_exit_during_initialization("Unable to use shared archive.", NULL); | |
1074 } else { | |
1075 FLAG_SET_DEFAULT(UseSharedSpaces, false); | |
1076 } | |
1077 } | |
1078 | |
1783 | 1079 void Arguments::set_tiered_flags() { |
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1080 // With tiered, set default policy to AdvancedThresholdPolicy, which is 3. |
1783 | 1081 if (FLAG_IS_DEFAULT(CompilationPolicyChoice)) { |
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1082 FLAG_SET_DEFAULT(CompilationPolicyChoice, 3); |
1783 | 1083 } |
1084 if (CompilationPolicyChoice < 2) { | |
1085 vm_exit_during_initialization( | |
1086 "Incompatible compilation policy selected", NULL); | |
1087 } | |
1891
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1088 // Increase the code cache size - tiered compiles a lot more. |
1783 | 1089 if (FLAG_IS_DEFAULT(ReservedCodeCacheSize)) { |
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1090 FLAG_SET_DEFAULT(ReservedCodeCacheSize, ReservedCodeCacheSize * 5); |
1783 | 1091 } |
1092 } | |
1093 | |
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1094 #if INCLUDE_ALL_GCS |
4838 | 1095 static void disable_adaptive_size_policy(const char* collector_name) { |
1096 if (UseAdaptiveSizePolicy) { | |
1097 if (FLAG_IS_CMDLINE(UseAdaptiveSizePolicy)) { | |
1098 warning("disabling UseAdaptiveSizePolicy; it is incompatible with %s.", | |
1099 collector_name); | |
1100 } | |
1101 FLAG_SET_DEFAULT(UseAdaptiveSizePolicy, false); | |
1102 } | |
1103 } | |
1104 | |
0 | 1105 void Arguments::set_parnew_gc_flags() { |
1064 | 1106 assert(!UseSerialGC && !UseParallelOldGC && !UseParallelGC && !UseG1GC, |
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1107 "control point invariant"); |
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1108 assert(UseParNewGC, "Error"); |
0 | 1109 |
4838 | 1110 // Turn off AdaptiveSizePolicy for parnew until it is complete. |
1111 disable_adaptive_size_policy("UseParNewGC"); | |
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1112 |
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1113 if (FLAG_IS_DEFAULT(ParallelGCThreads)) { |
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1114 FLAG_SET_DEFAULT(ParallelGCThreads, Abstract_VM_Version::parallel_worker_threads()); |
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1115 assert(ParallelGCThreads > 0, "We should always have at least one thread by default"); |
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1116 } else if (ParallelGCThreads == 0) { |
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1117 jio_fprintf(defaultStream::error_stream(), |
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1118 "The ParNew GC can not be combined with -XX:ParallelGCThreads=0\n"); |
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1119 vm_exit(1); |
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1120 } |
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1121 |
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1122 // By default YoungPLABSize and OldPLABSize are set to 4096 and 1024 respectively, |
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1123 // these settings are default for Parallel Scavenger. For ParNew+Tenured configuration |
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1124 // we set them to 1024 and 1024. |
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1125 // See CR 6362902. |
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1126 if (FLAG_IS_DEFAULT(YoungPLABSize)) { |
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1127 FLAG_SET_DEFAULT(YoungPLABSize, (intx)1024); |
0 | 1128 } |
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1129 if (FLAG_IS_DEFAULT(OldPLABSize)) { |
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1130 FLAG_SET_DEFAULT(OldPLABSize, (intx)1024); |
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1131 } |
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1132 |
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1133 // AlwaysTenure flag should make ParNew promote all at first collection. |
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1134 // See CR 6362902. |
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1135 if (AlwaysTenure) { |
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1136 FLAG_SET_CMDLINE(uintx, MaxTenuringThreshold, 0); |
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1137 } |
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1138 // When using compressed oops, we use local overflow stacks, |
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1139 // rather than using a global overflow list chained through |
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1140 // the klass word of the object's pre-image. |
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1141 if (UseCompressedOops && !ParGCUseLocalOverflow) { |
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1142 if (!FLAG_IS_DEFAULT(ParGCUseLocalOverflow)) { |
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1143 warning("Forcing +ParGCUseLocalOverflow: needed if using compressed references"); |
0 | 1144 } |
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1145 FLAG_SET_DEFAULT(ParGCUseLocalOverflow, true); |
0 | 1146 } |
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1147 assert(ParGCUseLocalOverflow || !UseCompressedOops, "Error"); |
0 | 1148 } |
1149 | |
1150 // Adjust some sizes to suit CMS and/or ParNew needs; these work well on | |
1151 // sparc/solaris for certain applications, but would gain from | |
1152 // further optimization and tuning efforts, and would almost | |
1153 // certainly gain from analysis of platform and environment. | |
1154 void Arguments::set_cms_and_parnew_gc_flags() { | |
1064 | 1155 assert(!UseSerialGC && !UseParallelOldGC && !UseParallelGC, "Error"); |
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1156 assert(UseConcMarkSweepGC, "CMS is expected to be on here"); |
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1157 |
0 | 1158 // If we are using CMS, we prefer to UseParNewGC, |
1159 // unless explicitly forbidden. | |
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1160 if (FLAG_IS_DEFAULT(UseParNewGC)) { |
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1161 FLAG_SET_ERGO(bool, UseParNewGC, true); |
0 | 1162 } |
1163 | |
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1164 // Turn off AdaptiveSizePolicy by default for cms until it is complete. |
4838 | 1165 disable_adaptive_size_policy("UseConcMarkSweepGC"); |
0 | 1166 |
1167 // In either case, adjust ParallelGCThreads and/or UseParNewGC | |
1168 // as needed. | |
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1169 if (UseParNewGC) { |
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1170 set_parnew_gc_flags(); |
0 | 1171 } |
1172 | |
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1173 size_t max_heap = align_size_down(MaxHeapSize, |
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1174 CardTableRS::ct_max_alignment_constraint()); |
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1175 |
0 | 1176 // Now make adjustments for CMS |
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1177 intx tenuring_default = (intx)6; |
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1178 size_t young_gen_per_worker = CMSYoungGenPerWorker; |
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1179 |
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1180 // Preferred young gen size for "short" pauses: |
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1181 // upper bound depends on # of threads and NewRatio. |
0 | 1182 const uintx parallel_gc_threads = |
1183 (ParallelGCThreads == 0 ? 1 : ParallelGCThreads); | |
1184 const size_t preferred_max_new_size_unaligned = | |
2368
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1185 MIN2(max_heap/(NewRatio+1), ScaleForWordSize(young_gen_per_worker * parallel_gc_threads)); |
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1186 size_t preferred_max_new_size = |
0 | 1187 align_size_up(preferred_max_new_size_unaligned, os::vm_page_size()); |
1188 | |
1189 // Unless explicitly requested otherwise, size young gen | |
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1190 // for "short" pauses ~ CMSYoungGenPerWorker*ParallelGCThreads |
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1191 |
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1192 // If either MaxNewSize or NewRatio is set on the command line, |
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1193 // assume the user is trying to set the size of the young gen. |
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1194 if (FLAG_IS_DEFAULT(MaxNewSize) && FLAG_IS_DEFAULT(NewRatio)) { |
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1195 |
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1196 // Set MaxNewSize to our calculated preferred_max_new_size unless |
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1197 // NewSize was set on the command line and it is larger than |
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1198 // preferred_max_new_size. |
0 | 1199 if (!FLAG_IS_DEFAULT(NewSize)) { // NewSize explicitly set at command-line |
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1200 FLAG_SET_ERGO(uintx, MaxNewSize, MAX2(NewSize, preferred_max_new_size)); |
0 | 1201 } else { |
13
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1202 FLAG_SET_ERGO(uintx, MaxNewSize, preferred_max_new_size); |
0 | 1203 } |
1064 | 1204 if (PrintGCDetails && Verbose) { |
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1205 // Too early to use gclog_or_tty |
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1206 tty->print_cr("CMS ergo set MaxNewSize: " SIZE_FORMAT, MaxNewSize); |
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1207 } |
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1208 |
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1209 // Code along this path potentially sets NewSize and OldSize |
1064 | 1210 if (PrintGCDetails && Verbose) { |
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1211 // Too early to use gclog_or_tty |
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1212 tty->print_cr("CMS set min_heap_size: " SIZE_FORMAT |
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1213 " initial_heap_size: " SIZE_FORMAT |
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1214 " max_heap: " SIZE_FORMAT, |
1064 | 1215 min_heap_size(), InitialHeapSize, max_heap); |
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1216 } |
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1217 size_t min_new = preferred_max_new_size; |
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1218 if (FLAG_IS_CMDLINE(NewSize)) { |
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1219 min_new = NewSize; |
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1220 } |
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1221 if (max_heap > min_new && min_heap_size() > min_new) { |
0 | 1222 // Unless explicitly requested otherwise, make young gen |
1223 // at least min_new, and at most preferred_max_new_size. | |
1224 if (FLAG_IS_DEFAULT(NewSize)) { | |
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1225 FLAG_SET_ERGO(uintx, NewSize, MAX2(NewSize, min_new)); |
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1226 FLAG_SET_ERGO(uintx, NewSize, MIN2(preferred_max_new_size, NewSize)); |
1064 | 1227 if (PrintGCDetails && Verbose) { |
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1228 // Too early to use gclog_or_tty |
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1229 tty->print_cr("CMS ergo set NewSize: " SIZE_FORMAT, NewSize); |
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1230 } |
0 | 1231 } |
1232 // Unless explicitly requested otherwise, size old gen | |
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1233 // so it's NewRatio x of NewSize. |
0 | 1234 if (FLAG_IS_DEFAULT(OldSize)) { |
1235 if (max_heap > NewSize) { | |
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1236 FLAG_SET_ERGO(uintx, OldSize, MIN2(NewRatio*NewSize, max_heap - NewSize)); |
1064 | 1237 if (PrintGCDetails && Verbose) { |
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1238 // Too early to use gclog_or_tty |
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1239 tty->print_cr("CMS ergo set OldSize: " SIZE_FORMAT, OldSize); |
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1240 } |
0 | 1241 } |
1242 } | |
1243 } | |
1244 } | |
1245 // Unless explicitly requested otherwise, definitely | |
1246 // promote all objects surviving "tenuring_default" scavenges. | |
1247 if (FLAG_IS_DEFAULT(MaxTenuringThreshold) && | |
1248 FLAG_IS_DEFAULT(SurvivorRatio)) { | |
6818 | 1249 FLAG_SET_ERGO(uintx, MaxTenuringThreshold, tenuring_default); |
0 | 1250 } |
1251 // If we decided above (or user explicitly requested) | |
1252 // `promote all' (via MaxTenuringThreshold := 0), | |
1253 // prefer minuscule survivor spaces so as not to waste | |
1254 // space for (non-existent) survivors | |
1255 if (FLAG_IS_DEFAULT(SurvivorRatio) && MaxTenuringThreshold == 0) { | |
8035 | 1256 FLAG_SET_ERGO(uintx, SurvivorRatio, MAX2((uintx)1024, SurvivorRatio)); |
0 | 1257 } |
1258 // If OldPLABSize is set and CMSParPromoteBlocksToClaim is not, | |
1259 // set CMSParPromoteBlocksToClaim equal to OldPLABSize. | |
1260 // This is done in order to make ParNew+CMS configuration to work | |
1261 // with YoungPLABSize and OldPLABSize options. | |
1262 // See CR 6362902. | |
1263 if (!FLAG_IS_DEFAULT(OldPLABSize)) { | |
1264 if (FLAG_IS_DEFAULT(CMSParPromoteBlocksToClaim)) { | |
13
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1265 // OldPLABSize is not the default value but CMSParPromoteBlocksToClaim |
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1266 // is. In this situtation let CMSParPromoteBlocksToClaim follow |
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1267 // the value (either from the command line or ergonomics) of |
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1268 // OldPLABSize. Following OldPLABSize is an ergonomics decision. |
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1269 FLAG_SET_ERGO(uintx, CMSParPromoteBlocksToClaim, OldPLABSize); |
1145
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1270 } else { |
0 | 1271 // OldPLABSize and CMSParPromoteBlocksToClaim are both set. |
1272 // CMSParPromoteBlocksToClaim is a collector-specific flag, so | |
1273 // we'll let it to take precedence. | |
1274 jio_fprintf(defaultStream::error_stream(), | |
886
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1275 "Both OldPLABSize and CMSParPromoteBlocksToClaim" |
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1276 " options are specified for the CMS collector." |
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1277 " CMSParPromoteBlocksToClaim will take precedence.\n"); |
0 | 1278 } |
1279 } | |
1145
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1280 if (!FLAG_IS_DEFAULT(ResizeOldPLAB) && !ResizeOldPLAB) { |
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1281 // OldPLAB sizing manually turned off: Use a larger default setting, |
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1282 // unless it was manually specified. This is because a too-low value |
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1283 // will slow down scavenges. |
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1284 if (FLAG_IS_DEFAULT(CMSParPromoteBlocksToClaim)) { |
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1285 FLAG_SET_ERGO(uintx, CMSParPromoteBlocksToClaim, 50); // default value before 6631166 |
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|
1286 } |
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1287 } |
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|
1288 // Overwrite OldPLABSize which is the variable we will internally use everywhere. |
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1289 FLAG_SET_ERGO(uintx, OldPLABSize, CMSParPromoteBlocksToClaim); |
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1290 // If either of the static initialization defaults have changed, note this |
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|
1291 // modification. |
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|
1292 if (!FLAG_IS_DEFAULT(CMSParPromoteBlocksToClaim) || !FLAG_IS_DEFAULT(OldPLABWeight)) { |
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|
1293 CFLS_LAB::modify_initialization(OldPLABSize, OldPLABWeight); |
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1294 } |
1284 | 1295 if (PrintGCDetails && Verbose) { |
1296 tty->print_cr("MarkStackSize: %uk MarkStackSizeMax: %uk", | |
1297 MarkStackSize / K, MarkStackSizeMax / K); | |
1298 tty->print_cr("ConcGCThreads: %u", ConcGCThreads); | |
1299 } | |
0 | 1300 } |
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1301 #endif // INCLUDE_ALL_GCS |
0 | 1302 |
1571
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1303 void set_object_alignment() { |
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1304 // Object alignment. |
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1305 assert(is_power_of_2(ObjectAlignmentInBytes), "ObjectAlignmentInBytes must be power of 2"); |
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1306 MinObjAlignmentInBytes = ObjectAlignmentInBytes; |
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1307 assert(MinObjAlignmentInBytes >= HeapWordsPerLong * HeapWordSize, "ObjectAlignmentInBytes value is too small"); |
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1308 MinObjAlignment = MinObjAlignmentInBytes / HeapWordSize; |
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1309 assert(MinObjAlignmentInBytes == MinObjAlignment * HeapWordSize, "ObjectAlignmentInBytes value is incorrect"); |
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1310 MinObjAlignmentInBytesMask = MinObjAlignmentInBytes - 1; |
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1311 |
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1312 LogMinObjAlignmentInBytes = exact_log2(ObjectAlignmentInBytes); |
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1313 LogMinObjAlignment = LogMinObjAlignmentInBytes - LogHeapWordSize; |
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1314 |
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1315 // Oop encoding heap max |
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1316 OopEncodingHeapMax = (uint64_t(max_juint) + 1) << LogMinObjAlignmentInBytes; |
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|
1317 |
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|
1318 #if INCLUDE_ALL_GCS |
1571
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1319 // Set CMS global values |
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|
1320 CompactibleFreeListSpace::set_cms_values(); |
8001
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|
1321 #endif // INCLUDE_ALL_GCS |
1571
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|
1322 } |
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|
1323 |
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|
1324 bool verify_object_alignment() { |
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1325 // Object alignment. |
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1326 if (!is_power_of_2(ObjectAlignmentInBytes)) { |
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1327 jio_fprintf(defaultStream::error_stream(), |
1829
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|
1328 "error: ObjectAlignmentInBytes=%d must be power of 2\n", |
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|
1329 (int)ObjectAlignmentInBytes); |
1571
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1330 return false; |
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|
1331 } |
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1332 if ((int)ObjectAlignmentInBytes < BytesPerLong) { |
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|
1333 jio_fprintf(defaultStream::error_stream(), |
1829
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|
1334 "error: ObjectAlignmentInBytes=%d must be greater or equal %d\n", |
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|
1335 (int)ObjectAlignmentInBytes, BytesPerLong); |
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|
1336 return false; |
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|
1337 } |
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|
1338 // It does not make sense to have big object alignment |
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|
1339 // since a space lost due to alignment will be greater |
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|
1340 // then a saved space from compressed oops. |
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|
1341 if ((int)ObjectAlignmentInBytes > 256) { |
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|
1342 jio_fprintf(defaultStream::error_stream(), |
7461
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|
1343 "error: ObjectAlignmentInBytes=%d must not be greater than 256\n", |
1829
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|
1344 (int)ObjectAlignmentInBytes); |
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|
1345 return false; |
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|
1346 } |
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|
1347 // In case page size is very small. |
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|
1348 if ((int)ObjectAlignmentInBytes >= os::vm_page_size()) { |
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|
1349 jio_fprintf(defaultStream::error_stream(), |
7461
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1350 "error: ObjectAlignmentInBytes=%d must be less than page size %d\n", |
1829
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|
1351 (int)ObjectAlignmentInBytes, os::vm_page_size()); |
1571
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1352 return false; |
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|
1353 } |
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|
1354 return true; |
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1355 } |
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|
1356 |
135
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|
1357 inline uintx max_heap_for_compressed_oops() { |
1963 | 1358 // Avoid sign flip. |
6725
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|
1359 if (OopEncodingHeapMax < ClassMetaspaceSize + os::vm_page_size()) { |
1963 | 1360 return 0; |
1361 } | |
6725
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1362 LP64_ONLY(return OopEncodingHeapMax - ClassMetaspaceSize - os::vm_page_size()); |
1064 | 1363 NOT_LP64(ShouldNotReachHere(); return 0); |
135
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1364 } |
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1365 |
0 | 1366 bool Arguments::should_auto_select_low_pause_collector() { |
1367 if (UseAutoGCSelectPolicy && | |
1368 !FLAG_IS_DEFAULT(MaxGCPauseMillis) && | |
1369 (MaxGCPauseMillis <= AutoGCSelectPauseMillis)) { | |
1370 if (PrintGCDetails) { | |
1371 // Cannot use gclog_or_tty yet. | |
1372 tty->print_cr("Automatic selection of the low pause collector" | |
1373 " based on pause goal of %d (ms)", MaxGCPauseMillis); | |
1374 } | |
1375 return true; | |
1376 } | |
1377 return false; | |
1378 } | |
1379 | |
8741
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1380 void Arguments::set_use_compressed_oops() { |
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1381 #ifndef ZERO |
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|
1382 #ifdef _LP64 |
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1383 // MaxHeapSize is not set up properly at this point, but |
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1384 // the only value that can override MaxHeapSize if we are |
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1385 // to use UseCompressedOops is InitialHeapSize. |
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|
1386 size_t max_heap_size = MAX2(MaxHeapSize, InitialHeapSize); |
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1387 |
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1388 if (max_heap_size <= max_heap_for_compressed_oops()) { |
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1389 #if !defined(COMPILER1) || defined(TIERED) |
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1390 if (FLAG_IS_DEFAULT(UseCompressedOops)) { |
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|
1391 FLAG_SET_ERGO(bool, UseCompressedOops, true); |
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1392 } |
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|
1393 #endif |
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|
1394 #ifdef _WIN64 |
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1395 if (UseLargePages && UseCompressedOops) { |
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|
1396 // Cannot allocate guard pages for implicit checks in indexed addressing |
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|
1397 // mode, when large pages are specified on windows. |
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|
1398 // This flag could be switched ON if narrow oop base address is set to 0, |
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1399 // see code in Universe::initialize_heap(). |
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|
1400 Universe::set_narrow_oop_use_implicit_null_checks(false); |
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1401 } |
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|
1402 #endif // _WIN64 |
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|
1403 } else { |
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|
1404 if (UseCompressedOops && !FLAG_IS_DEFAULT(UseCompressedOops)) { |
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1405 warning("Max heap size too large for Compressed Oops"); |
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1406 FLAG_SET_DEFAULT(UseCompressedOops, false); |
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1407 FLAG_SET_DEFAULT(UseCompressedKlassPointers, false); |
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1408 } |
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1409 } |
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1410 #endif // _LP64 |
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1411 #endif // ZERO |
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1412 } |
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1413 |
0 | 1414 void Arguments::set_ergonomics_flags() { |
1415 | |
4946 | 1416 if (os::is_server_class_machine()) { |
0 | 1417 // If no other collector is requested explicitly, |
1418 // let the VM select the collector based on | |
1419 // machine class and automatic selection policy. | |
1420 if (!UseSerialGC && | |
1421 !UseConcMarkSweepGC && | |
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1422 !UseG1GC && |
0 | 1423 !UseParNewGC && |
1424 FLAG_IS_DEFAULT(UseParallelGC)) { | |
1425 if (should_auto_select_low_pause_collector()) { | |
1426 FLAG_SET_ERGO(bool, UseConcMarkSweepGC, true); | |
1427 } else { | |
1428 FLAG_SET_ERGO(bool, UseParallelGC, true); | |
1429 } | |
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1430 } |
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1431 // Shared spaces work fine with other GCs but causes bytecode rewriting |
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1432 // to be disabled, which hurts interpreter performance and decreases |
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1433 // server performance. On server class machines, keep the default |
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1434 // off unless it is asked for. Future work: either add bytecode rewriting |
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1435 // at link time, or rewrite bytecodes in non-shared methods. |
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1436 if (!DumpSharedSpaces && !RequireSharedSpaces) { |
0 | 1437 no_shared_spaces(); |
1438 } | |
1439 } | |
113
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1440 |
1010 | 1441 #ifndef ZERO |
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1442 #ifdef _LP64 |
8741
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1443 set_use_compressed_oops(); |
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1444 // UseCompressedOops must be on for UseCompressedKlassPointers to be on. |
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1445 if (!UseCompressedOops) { |
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1446 if (UseCompressedKlassPointers) { |
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1447 warning("UseCompressedKlassPointers requires UseCompressedOops"); |
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1448 } |
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1449 FLAG_SET_DEFAULT(UseCompressedKlassPointers, false); |
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1450 } else { |
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1451 // Turn on UseCompressedKlassPointers too |
6848
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1452 if (FLAG_IS_DEFAULT(UseCompressedKlassPointers)) { |
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1453 FLAG_SET_ERGO(bool, UseCompressedKlassPointers, true); |
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1454 } |
6736
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1455 // Set the ClassMetaspaceSize to something that will not need to be |
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1456 // expanded, since it cannot be expanded. |
7982
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1457 if (UseCompressedKlassPointers) { |
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1458 if (ClassMetaspaceSize > KlassEncodingMetaspaceMax) { |
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1459 warning("Class metaspace size is too large for UseCompressedKlassPointers"); |
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1460 FLAG_SET_DEFAULT(UseCompressedKlassPointers, false); |
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1461 } else if (FLAG_IS_DEFAULT(ClassMetaspaceSize)) { |
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1462 // 100,000 classes seems like a good size, so 100M assumes around 1K |
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1463 // per klass. The vtable and oopMap is embedded so we don't have a fixed |
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1464 // size per klass. Eventually, this will be parameterized because it |
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1465 // would also be useful to determine the optimal size of the |
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1466 // systemDictionary. |
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1467 FLAG_SET_ERGO(uintx, ClassMetaspaceSize, 100*M); |
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1468 } |
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1469 } |
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1470 } |
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1471 // Also checks that certain machines are slower with compressed oops |
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1472 // in vm_version initialization code. |
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1473 #endif // _LP64 |
1010 | 1474 #endif // !ZERO |
0 | 1475 } |
1476 | |
1477 void Arguments::set_parallel_gc_flags() { | |
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1478 assert(UseParallelGC || UseParallelOldGC, "Error"); |
4879 | 1479 // Enable ParallelOld unless it was explicitly disabled (cmd line or rc file). |
1480 if (FLAG_IS_DEFAULT(UseParallelOldGC)) { | |
1481 FLAG_SET_DEFAULT(UseParallelOldGC, true); | |
0 | 1482 } |
4879 | 1483 FLAG_SET_DEFAULT(UseParallelGC, true); |
0 | 1484 |
1485 // If no heap maximum was requested explicitly, use some reasonable fraction | |
1486 // of the physical memory, up to a maximum of 1GB. | |
7471
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1487 FLAG_SET_DEFAULT(ParallelGCThreads, |
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1488 Abstract_VM_Version::parallel_worker_threads()); |
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1489 if (ParallelGCThreads == 0) { |
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1490 jio_fprintf(defaultStream::error_stream(), |
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1491 "The Parallel GC can not be combined with -XX:ParallelGCThreads=0\n"); |
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1492 vm_exit(1); |
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1493 } |
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|
1494 |
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|
1495 |
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|
1496 // If InitialSurvivorRatio or MinSurvivorRatio were not specified, but the |
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|
1497 // SurvivorRatio has been set, reset their default values to SurvivorRatio + |
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|
1498 // 2. By doing this we make SurvivorRatio also work for Parallel Scavenger. |
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1499 // See CR 6362902 for details. |
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|
1500 if (!FLAG_IS_DEFAULT(SurvivorRatio)) { |
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1501 if (FLAG_IS_DEFAULT(InitialSurvivorRatio)) { |
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1502 FLAG_SET_DEFAULT(InitialSurvivorRatio, SurvivorRatio + 2); |
0 | 1503 } |
7471
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1504 if (FLAG_IS_DEFAULT(MinSurvivorRatio)) { |
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|
1505 FLAG_SET_DEFAULT(MinSurvivorRatio, SurvivorRatio + 2); |
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1506 } |
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|
1507 } |
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1508 |
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1509 if (UseParallelOldGC) { |
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1510 // Par compact uses lower default values since they are treated as |
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1511 // minimums. These are different defaults because of the different |
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1512 // interpretation and are not ergonomically set. |
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1513 if (FLAG_IS_DEFAULT(MarkSweepDeadRatio)) { |
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1514 FLAG_SET_DEFAULT(MarkSweepDeadRatio, 1); |
0 | 1515 } |
1516 } | |
1517 } | |
1518 | |
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1519 void Arguments::set_g1_gc_flags() { |
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1520 assert(UseG1GC, "Error"); |
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1521 #ifdef COMPILER1 |
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1522 FastTLABRefill = false; |
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1523 #endif |
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1524 FLAG_SET_DEFAULT(ParallelGCThreads, |
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1525 Abstract_VM_Version::parallel_worker_threads()); |
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1526 if (ParallelGCThreads == 0) { |
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1527 FLAG_SET_DEFAULT(ParallelGCThreads, |
751 | 1528 Abstract_VM_Version::parallel_worker_threads()); |
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1529 } |
751 | 1530 |
7397
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1531 // MarkStackSize will be set (if it hasn't been set by the user) |
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1532 // when concurrent marking is initialized. |
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1533 // Its value will be based upon the number of parallel marking threads. |
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1534 // But we do set the maximum mark stack size here. |
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1535 if (FLAG_IS_DEFAULT(MarkStackSizeMax)) { |
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|
1536 FLAG_SET_DEFAULT(MarkStackSizeMax, 128 * TASKQUEUE_SIZE); |
1284 | 1537 } |
1356 | 1538 |
1539 if (FLAG_IS_DEFAULT(GCTimeRatio) || GCTimeRatio == 0) { | |
1540 // In G1, we want the default GC overhead goal to be higher than | |
1541 // say in PS. So we set it here to 10%. Otherwise the heap might | |
1542 // be expanded more aggressively than we would like it to. In | |
1543 // fact, even 10% seems to not be high enough in some cases | |
1544 // (especially small GC stress tests that the main thing they do | |
1545 // is allocation). We might consider increase it further. | |
1546 FLAG_SET_DEFAULT(GCTimeRatio, 9); | |
1547 } | |
7397
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1548 |
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1549 if (PrintGCDetails && Verbose) { |
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1550 tty->print_cr("MarkStackSize: %uk MarkStackSizeMax: %uk", |
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1551 MarkStackSize / K, MarkStackSizeMax / K); |
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1552 tty->print_cr("ConcGCThreads: %u", ConcGCThreads); |
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1553 } |
342
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1554 } |
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1555 |
8854
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1556 julong Arguments::limit_by_allocatable_memory(julong limit) { |
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1557 julong max_allocatable; |
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1558 julong result = limit; |
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1559 if (os::has_allocatable_memory_limit(&max_allocatable)) { |
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1560 result = MIN2(result, max_allocatable / MaxVirtMemFraction); |
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|
1561 } |
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|
1562 return result; |
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|
1563 } |
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|
1564 |
1064 | 1565 void Arguments::set_heap_size() { |
1566 if (!FLAG_IS_DEFAULT(DefaultMaxRAMFraction)) { | |
1567 // Deprecated flag | |
1568 FLAG_SET_CMDLINE(uintx, MaxRAMFraction, DefaultMaxRAMFraction); | |
1569 } | |
1570 | |
1571 const julong phys_mem = | |
1572 FLAG_IS_DEFAULT(MaxRAM) ? MIN2(os::physical_memory(), (julong)MaxRAM) | |
1573 : (julong)MaxRAM; | |
1574 | |
1575 // If the maximum heap size has not been set with -Xmx, | |
1576 // then set it as fraction of the size of physical memory, | |
1577 // respecting the maximum and minimum sizes of the heap. | |
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|
1578 if (FLAG_IS_DEFAULT(MaxHeapSize)) { |
1064 | 1579 julong reasonable_max = phys_mem / MaxRAMFraction; |
1580 | |
1581 if (phys_mem <= MaxHeapSize * MinRAMFraction) { | |
1582 // Small physical memory, so use a minimum fraction of it for the heap | |
1583 reasonable_max = phys_mem / MinRAMFraction; | |
1584 } else { | |
1585 // Not-small physical memory, so require a heap at least | |
1586 // as large as MaxHeapSize | |
1587 reasonable_max = MAX2(reasonable_max, (julong)MaxHeapSize); | |
1588 } | |
1589 if (!FLAG_IS_DEFAULT(ErgoHeapSizeLimit) && ErgoHeapSizeLimit != 0) { | |
1590 // Limit the heap size to ErgoHeapSizeLimit | |
1591 reasonable_max = MIN2(reasonable_max, (julong)ErgoHeapSizeLimit); | |
342
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|
1592 } |
1064 | 1593 if (UseCompressedOops) { |
1594 // Limit the heap size to the maximum possible when using compressed oops | |
1963 | 1595 julong max_coop_heap = (julong)max_heap_for_compressed_oops(); |
1596 if (HeapBaseMinAddress + MaxHeapSize < max_coop_heap) { | |
1597 // Heap should be above HeapBaseMinAddress to get zero based compressed oops | |
1598 // but it should be not less than default MaxHeapSize. | |
1599 max_coop_heap -= HeapBaseMinAddress; | |
1600 } | |
1601 reasonable_max = MIN2(reasonable_max, max_coop_heap); | |
1064 | 1602 } |
8854
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|
1603 reasonable_max = limit_by_allocatable_memory(reasonable_max); |
1064 | 1604 |
1605 if (!FLAG_IS_DEFAULT(InitialHeapSize)) { | |
1606 // An initial heap size was specified on the command line, | |
1607 // so be sure that the maximum size is consistent. Done | |
8854
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|
1608 // after call to limit_by_allocatable_memory because that |
1064 | 1609 // method might reduce the allocation size. |
1610 reasonable_max = MAX2(reasonable_max, (julong)InitialHeapSize); | |
1611 } | |
1612 | |
342
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|
1613 if (PrintGCDetails && Verbose) { |
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|
1614 // Cannot use gclog_or_tty yet. |
1064 | 1615 tty->print_cr(" Maximum heap size " SIZE_FORMAT, reasonable_max); |
342
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|
1616 } |
1064 | 1617 FLAG_SET_ERGO(uintx, MaxHeapSize, (uintx)reasonable_max); |
1618 } | |
1619 | |
1620 // If the initial_heap_size has not been set with InitialHeapSize | |
1621 // or -Xms, then set it as fraction of the size of physical memory, | |
1622 // respecting the maximum and minimum sizes of the heap. | |
1623 if (FLAG_IS_DEFAULT(InitialHeapSize)) { | |
1074
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|
1624 julong reasonable_minimum = (julong)(OldSize + NewSize); |
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|
1625 |
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|
1626 reasonable_minimum = MIN2(reasonable_minimum, (julong)MaxHeapSize); |
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|
1627 |
8854
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|
1628 reasonable_minimum = limit_by_allocatable_memory(reasonable_minimum); |
1074
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|
1629 |
1064 | 1630 julong reasonable_initial = phys_mem / InitialRAMFraction; |
1631 | |
1074
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|
1632 reasonable_initial = MAX2(reasonable_initial, reasonable_minimum); |
1064 | 1633 reasonable_initial = MIN2(reasonable_initial, (julong)MaxHeapSize); |
1634 | |
8854
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|
1635 reasonable_initial = limit_by_allocatable_memory(reasonable_initial); |
1064 | 1636 |
1637 if (PrintGCDetails && Verbose) { | |
1638 // Cannot use gclog_or_tty yet. | |
1639 tty->print_cr(" Initial heap size " SIZE_FORMAT, (uintx)reasonable_initial); | |
1074
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|
1640 tty->print_cr(" Minimum heap size " SIZE_FORMAT, (uintx)reasonable_minimum); |
342
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|
1641 } |
1064 | 1642 FLAG_SET_ERGO(uintx, InitialHeapSize, (uintx)reasonable_initial); |
1074
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|
1643 set_min_heap_size((uintx)reasonable_minimum); |
342
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|
1644 } |
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|
1645 } |
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|
1646 |
0 | 1647 // This must be called after ergonomics because we want bytecode rewriting |
1648 // if the server compiler is used, or if UseSharedSpaces is disabled. | |
1649 void Arguments::set_bytecode_flags() { | |
1650 // Better not attempt to store into a read-only space. | |
1651 if (UseSharedSpaces) { | |
1652 FLAG_SET_DEFAULT(RewriteBytecodes, false); | |
1653 FLAG_SET_DEFAULT(RewriteFrequentPairs, false); | |
1654 } | |
1655 | |
1656 if (!RewriteBytecodes) { | |
1657 FLAG_SET_DEFAULT(RewriteFrequentPairs, false); | |
1658 } | |
1659 } | |
1660 | |
1661 // Aggressive optimization flags -XX:+AggressiveOpts | |
1662 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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parents:
0
diff
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|
1663 #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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|
1664 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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|
1665 if (FLAG_IS_DEFAULT(EliminateAutoBox)) { |
ff5961f4c095
6395208: Elide autoboxing for calls to HashMap.get(int) and HashMap.get(long)
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parents:
0
diff
changeset
|
1666 FLAG_SET_DEFAULT(EliminateAutoBox, true); |
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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|
1667 } |
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6395208: Elide autoboxing for calls to HashMap.get(int) and HashMap.get(long)
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0
diff
changeset
|
1668 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
|
1669 FLAG_SET_DEFAULT(AutoBoxCacheMax, 20000); |
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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|
1670 } |
ff5961f4c095
6395208: Elide autoboxing for calls to HashMap.get(int) and HashMap.get(long)
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parents:
0
diff
changeset
|
1671 |
ff5961f4c095
6395208: Elide autoboxing for calls to HashMap.get(int) and HashMap.get(long)
never
parents:
0
diff
changeset
|
1672 // Feed the cache size setting into the JDK |
ff5961f4c095
6395208: Elide autoboxing for calls to HashMap.get(int) and HashMap.get(long)
never
parents:
0
diff
changeset
|
1673 char buffer[1024]; |
513
2328d1d3f8cf
6781583: Hotspot build fails on linux 64 bit platform with gcc 4.3.2
xlu
parents:
489
diff
changeset
|
1674 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
changeset
|
1675 add_property(buffer); |
ff5961f4c095
6395208: Elide autoboxing for calls to HashMap.get(int) and HashMap.get(long)
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parents:
0
diff
changeset
|
1676 } |
416
b6cfd754403d
6649622: HotSpot Biased locking needs tuning on latest CPUs
never
parents:
363
diff
changeset
|
1677 if (AggressiveOpts && FLAG_IS_DEFAULT(BiasedLockingStartupDelay)) { |
b6cfd754403d
6649622: HotSpot Biased locking needs tuning on latest CPUs
never
parents:
363
diff
changeset
|
1678 FLAG_SET_DEFAULT(BiasedLockingStartupDelay, 500); |
b6cfd754403d
6649622: HotSpot Biased locking needs tuning on latest CPUs
never
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363
diff
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|
1679 } |
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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|
1680 #endif |
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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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|
1681 |
0 | 1682 if (AggressiveOpts) { |
61 | 1683 // Sample flag setting code |
1684 // if (FLAG_IS_DEFAULT(EliminateZeroing)) { | |
1685 // FLAG_SET_DEFAULT(EliminateZeroing, true); | |
1686 // } | |
0 | 1687 } |
1688 } | |
1689 | |
1690 //=========================================================================================================== | |
1691 // Parsing of java.compiler property | |
1692 | |
1693 void Arguments::process_java_compiler_argument(char* arg) { | |
1694 // For backwards compatibility, Djava.compiler=NONE or "" | |
1695 // causes us to switch to -Xint mode UNLESS -Xdebug | |
1696 // is also specified. | |
1697 if (strlen(arg) == 0 || strcasecmp(arg, "NONE") == 0) { | |
1698 set_java_compiler(true); // "-Djava.compiler[=...]" most recently seen. | |
1699 } | |
1700 } | |
1701 | |
1702 void Arguments::process_java_launcher_argument(const char* launcher, void* extra_info) { | |
1703 _sun_java_launcher = strdup(launcher); | |
2302
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
1704 if (strcmp("gamma", _sun_java_launcher) == 0) { |
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
1705 _created_by_gamma_launcher = true; |
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
1706 } |
0 | 1707 } |
1708 | |
1709 bool Arguments::created_by_java_launcher() { | |
1710 assert(_sun_java_launcher != NULL, "property must have value"); | |
1711 return strcmp(DEFAULT_JAVA_LAUNCHER, _sun_java_launcher) != 0; | |
1712 } | |
1713 | |
2302
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
1714 bool Arguments::created_by_gamma_launcher() { |
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
1715 return _created_by_gamma_launcher; |
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
1716 } |
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
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|
1717 |
0 | 1718 //=========================================================================================================== |
1719 // Parsing of main arguments | |
1720 | |
1244
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
1721 bool Arguments::verify_interval(uintx val, uintx min, |
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
1722 uintx max, const char* name) { |
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
1723 // 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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parents:
1188
diff
changeset
|
1724 // false, otherwise. |
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
1725 if (val >= min && val <= max) { |
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
1726 return true; |
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
1727 } |
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
1728 jio_fprintf(defaultStream::error_stream(), |
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
1729 "%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
parents:
1188
diff
changeset
|
1730 " 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
|
1731 name, val, min, max); |
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
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parents:
1188
diff
changeset
|
1732 return false; |
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
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diff
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|
1733 } |
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
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diff
changeset
|
1734 |
1744
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
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diff
changeset
|
1735 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
|
1736 // 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
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|
1737 // false, otherwise. |
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
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diff
changeset
|
1738 if (val >= min ) { |
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
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diff
changeset
|
1739 return true; |
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
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diff
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|
1740 } |
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
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diff
changeset
|
1741 jio_fprintf(defaultStream::error_stream(), |
2366
1fb790245268
6820066: Check that -XX:ParGCArrayScanChunk has a value larger than zero.
jwilhelm
parents:
2362
diff
changeset
|
1742 "%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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1681
diff
changeset
|
1743 name, val, min); |
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
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diff
changeset
|
1744 return false; |
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
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1681
diff
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|
1745 } |
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
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1681
diff
changeset
|
1746 |
0 | 1747 bool Arguments::verify_percentage(uintx value, const char* name) { |
1748 if (value <= 100) { | |
1749 return true; | |
1750 } | |
1751 jio_fprintf(defaultStream::error_stream(), | |
1752 "%s of " UINTX_FORMAT " is invalid; must be between 0 and 100\n", | |
1753 name, value); | |
1754 return false; | |
1755 } | |
1756 | |
9060
cc32ccaaf47f
8003310: Enable -Wunused-function when compiling with gcc
mikael
parents:
8847
diff
changeset
|
1757 #if !INCLUDE_ALL_GCS |
cc32ccaaf47f
8003310: Enable -Wunused-function when compiling with gcc
mikael
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8847
diff
changeset
|
1758 #ifdef ASSERT |
0 | 1759 static bool verify_serial_gc_flags() { |
1760 return (UseSerialGC && | |
945
68ef3fdcdb76
6872136: CMS: confusing message may be printed when a collector is switched off implicitly
ysr
parents:
932
diff
changeset
|
1761 !(UseParNewGC || (UseConcMarkSweepGC || CMSIncrementalMode) || UseG1GC || |
342
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6711316: Open source the Garbage-First garbage collector
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135
diff
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|
1762 UseParallelGC || UseParallelOldGC)); |
0 | 1763 } |
9060
cc32ccaaf47f
8003310: Enable -Wunused-function when compiling with gcc
mikael
parents:
8847
diff
changeset
|
1764 #endif // ASSERT |
cc32ccaaf47f
8003310: Enable -Wunused-function when compiling with gcc
mikael
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8847
diff
changeset
|
1765 #endif // INCLUDE_ALL_GCS |
0 | 1766 |
3767
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3349
diff
changeset
|
1767 // check if do gclog rotation |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3349
diff
changeset
|
1768 // +UseGCLogFileRotation is a must, |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3349
diff
changeset
|
1769 // no gc log rotation when log file not supplied or |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3349
diff
changeset
|
1770 // NumberOfGCLogFiles is 0, or GCLogFileSize is 0 |
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1771 void check_gclog_consistency() { |
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1772 if (UseGCLogFileRotation) { |
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1773 if ((Arguments::gc_log_filename() == NULL) || |
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1774 (NumberOfGCLogFiles == 0) || |
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1775 (GCLogFileSize == 0)) { |
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1776 jio_fprintf(defaultStream::output_stream(), |
3769
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1777 "To enable GC log rotation, use -Xloggc:<filename> -XX:+UseGCLogFileRotation -XX:NumberOfGCLogFiles=<num_of_files> -XX:GCLogFileSize=<num_of_size>\n" |
3767
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1778 "where num_of_file > 0 and num_of_size > 0\n" |
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1779 "GC log rotation is turned off\n"); |
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1780 UseGCLogFileRotation = false; |
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1781 } |
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|
1782 } |
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1783 |
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1784 if (UseGCLogFileRotation && GCLogFileSize < 8*K) { |
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1785 FLAG_SET_CMDLINE(uintx, GCLogFileSize, 8*K); |
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1786 jio_fprintf(defaultStream::output_stream(), |
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1787 "GCLogFileSize changed to minimum 8K\n"); |
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1788 } |
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1789 } |
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|
1790 |
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1791 // Check consistency of GC selection |
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1792 bool Arguments::check_gc_consistency() { |
3767
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1793 check_gclog_consistency(); |
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1794 bool status = true; |
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1795 // Ensure that the user has not selected conflicting sets |
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1796 // of collectors. [Note: this check is merely a user convenience; |
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1797 // collectors over-ride each other so that only a non-conflicting |
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1798 // set is selected; however what the user gets is not what they |
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1799 // may have expected from the combination they asked for. It's |
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1800 // better to reduce user confusion by not allowing them to |
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|
1801 // select conflicting combinations. |
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|
1802 uint i = 0; |
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|
1803 if (UseSerialGC) i++; |
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1804 if (UseConcMarkSweepGC || UseParNewGC) i++; |
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1805 if (UseParallelGC || UseParallelOldGC) i++; |
845
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|
1806 if (UseG1GC) i++; |
10
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1807 if (i > 1) { |
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1808 jio_fprintf(defaultStream::error_stream(), |
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|
1809 "Conflicting collector combinations in option list; " |
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|
1810 "please refer to the release notes for the combinations " |
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|
1811 "allowed\n"); |
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1812 status = false; |
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|
1813 } |
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|
1814 |
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1815 return status; |
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|
1816 } |
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|
1817 |
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1818 void Arguments::check_deprecated_gcs() { |
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1819 if (UseConcMarkSweepGC && !UseParNewGC) { |
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1820 warning("Using the DefNew young collector with the CMS collector is deprecated " |
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1821 "and will likely be removed in a future release"); |
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1822 } |
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1823 |
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1824 if (UseParNewGC && !UseConcMarkSweepGC) { |
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1825 // !UseConcMarkSweepGC means that we are using serial old gc. Unfortunately we don't |
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1826 // set up UseSerialGC properly, so that can't be used in the check here. |
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1827 warning("Using the ParNew young collector with the Serial old collector is deprecated " |
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1828 "and will likely be removed in a future release"); |
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1829 } |
7453 | 1830 |
1831 if (CMSIncrementalMode) { | |
1832 warning("Using incremental CMS is deprecated and will likely be removed in a future release"); | |
1833 } | |
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1834 } |
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1835 |
8734 | 1836 void Arguments::check_deprecated_gc_flags() { |
1837 if (FLAG_IS_CMDLINE(MaxGCMinorPauseMillis)) { | |
1838 warning("Using MaxGCMinorPauseMillis as minor pause goal is deprecated" | |
1839 "and will likely be removed in future release"); | |
1840 } | |
1841 } | |
1842 | |
1744
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1843 // Check stack pages settings |
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1844 bool Arguments::check_stack_pages() |
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1845 { |
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1846 bool status = true; |
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1847 status = status && verify_min_value(StackYellowPages, 1, "StackYellowPages"); |
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1848 status = status && verify_min_value(StackRedPages, 1, "StackRedPages"); |
1867
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1849 // greater stack shadow pages can't generate instruction to bang stack |
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1850 status = status && verify_interval(StackShadowPages, 1, 50, "StackShadowPages"); |
1744
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1851 return status; |
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1852 } |
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1853 |
0 | 1854 // Check the consistency of vm_init_args |
1855 bool Arguments::check_vm_args_consistency() { | |
1856 // Method for adding checks for flag consistency. | |
1857 // The intent is to warn the user of all possible conflicts, | |
1858 // before returning an error. | |
1859 // Note: Needs platform-dependent factoring. | |
1860 bool status = true; | |
1861 | |
1862 #if ( (defined(COMPILER2) && defined(SPARC))) | |
1863 // NOTE: The call to VM_Version_init depends on the fact that VM_Version_init | |
1864 // on sparc doesn't require generation of a stub as is the case on, e.g., | |
1865 // x86. Normally, VM_Version_init must be called from init_globals in | |
1866 // init.cpp, which is called by the initial java thread *after* arguments | |
1867 // have been parsed. VM_Version_init gets called twice on sparc. | |
1868 extern void VM_Version_init(); | |
1869 VM_Version_init(); | |
1870 if (!VM_Version::has_v9()) { | |
1871 jio_fprintf(defaultStream::error_stream(), | |
1872 "V8 Machine detected, Server requires V9\n"); | |
1873 status = false; | |
1874 } | |
1875 #endif /* COMPILER2 && SPARC */ | |
1876 | |
1877 // Allow both -XX:-UseStackBanging and -XX:-UseBoundThreads in non-product | |
1878 // builds so the cost of stack banging can be measured. | |
1879 #if (defined(PRODUCT) && defined(SOLARIS)) | |
1880 if (!UseBoundThreads && !UseStackBanging) { | |
1881 jio_fprintf(defaultStream::error_stream(), | |
1882 "-UseStackBanging conflicts with -UseBoundThreads\n"); | |
1883 | |
1884 status = false; | |
1885 } | |
1886 #endif | |
1887 | |
1888 if (TLABRefillWasteFraction == 0) { | |
1889 jio_fprintf(defaultStream::error_stream(), | |
1890 "TLABRefillWasteFraction should be a denominator, " | |
1891 "not " SIZE_FORMAT "\n", | |
1892 TLABRefillWasteFraction); | |
1893 status = false; | |
1894 } | |
1895 | |
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1896 status = status && verify_percentage(AdaptiveSizePolicyWeight, |
0 | 1897 "AdaptiveSizePolicyWeight"); |
10
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1898 status = status && verify_percentage(ThresholdTolerance, "ThresholdTolerance"); |
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1899 status = status && verify_percentage(MinHeapFreeRatio, "MinHeapFreeRatio"); |
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1900 status = status && verify_percentage(MaxHeapFreeRatio, "MaxHeapFreeRatio"); |
0 | 1901 |
6982
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1902 // Divide by bucket size to prevent a large size from causing rollover when |
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1903 // calculating amount of memory needed to be allocated for the String table. |
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1904 status = status && verify_interval(StringTableSize, defaultStringTableSize, |
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1905 (max_uintx / StringTable::bucket_size()), "StringTable size"); |
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1906 |
0 | 1907 if (MinHeapFreeRatio > MaxHeapFreeRatio) { |
1908 jio_fprintf(defaultStream::error_stream(), | |
1909 "MinHeapFreeRatio (" UINTX_FORMAT ") must be less than or " | |
1910 "equal to MaxHeapFreeRatio (" UINTX_FORMAT ")\n", | |
1911 MinHeapFreeRatio, MaxHeapFreeRatio); | |
1912 status = false; | |
1913 } | |
1914 // Keeping the heap 100% free is hard ;-) so limit it to 99%. | |
1915 MinHeapFreeRatio = MIN2(MinHeapFreeRatio, (uintx) 99); | |
1916 | |
8040
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1917 // Min/MaxMetaspaceFreeRatio |
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1918 status = status && verify_percentage(MinMetaspaceFreeRatio, "MinMetaspaceFreeRatio"); |
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1919 status = status && verify_percentage(MaxMetaspaceFreeRatio, "MaxMetaspaceFreeRatio"); |
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1920 |
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1921 if (MinMetaspaceFreeRatio > MaxMetaspaceFreeRatio) { |
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1922 jio_fprintf(defaultStream::error_stream(), |
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1923 "MinMetaspaceFreeRatio (%s" UINTX_FORMAT ") must be less than or " |
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1924 "equal to MaxMetaspaceFreeRatio (%s" UINTX_FORMAT ")\n", |
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1925 FLAG_IS_DEFAULT(MinMetaspaceFreeRatio) ? "Default: " : "", |
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1926 MinMetaspaceFreeRatio, |
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1927 FLAG_IS_DEFAULT(MaxMetaspaceFreeRatio) ? "Default: " : "", |
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1928 MaxMetaspaceFreeRatio); |
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1929 status = false; |
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1930 } |
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1931 |
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1932 // Trying to keep 100% free is not practical |
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1933 MinMetaspaceFreeRatio = MIN2(MinMetaspaceFreeRatio, (uintx) 99); |
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1934 |
0 | 1935 if (FullGCALot && FLAG_IS_DEFAULT(MarkSweepAlwaysCompactCount)) { |
1936 MarkSweepAlwaysCompactCount = 1; // Move objects every gc. | |
1937 } | |
1938 | |
483
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1939 if (UseParallelOldGC && ParallelOldGCSplitALot) { |
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|
1940 // Settings to encourage splitting. |
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|
1941 if (!FLAG_IS_CMDLINE(NewRatio)) { |
8035 | 1942 FLAG_SET_CMDLINE(uintx, NewRatio, 2); |
483
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|
1943 } |
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|
1944 if (!FLAG_IS_CMDLINE(ScavengeBeforeFullGC)) { |
0f773163217d
6765954: par compact - stress mode for splitting young gen spaces
jcoomes
parents:
449
diff
changeset
|
1945 FLAG_SET_CMDLINE(bool, ScavengeBeforeFullGC, false); |
0f773163217d
6765954: par compact - stress mode for splitting young gen spaces
jcoomes
parents:
449
diff
changeset
|
1946 } |
0f773163217d
6765954: par compact - stress mode for splitting young gen spaces
jcoomes
parents:
449
diff
changeset
|
1947 } |
0f773163217d
6765954: par compact - stress mode for splitting young gen spaces
jcoomes
parents:
449
diff
changeset
|
1948 |
10
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jmasa
parents:
0
diff
changeset
|
1949 status = status && verify_percentage(GCHeapFreeLimit, "GCHeapFreeLimit"); |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
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0
diff
changeset
|
1950 status = status && verify_percentage(GCTimeLimit, "GCTimeLimit"); |
0 | 1951 if (GCTimeLimit == 100) { |
1952 // Turn off gc-overhead-limit-exceeded checks | |
1953 FLAG_SET_DEFAULT(UseGCOverheadLimit, false); | |
1954 } | |
1955 | |
10
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1956 status = status && verify_percentage(GCHeapFreeLimit, "GCHeapFreeLimit"); |
0 | 1957 |
10
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1958 status = status && check_gc_consistency(); |
1744
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
ptisnovs
parents:
1681
diff
changeset
|
1959 status = status && check_stack_pages(); |
0 | 1960 |
1961 if (_has_alloc_profile) { | |
1962 if (UseParallelGC || UseParallelOldGC) { | |
1963 jio_fprintf(defaultStream::error_stream(), | |
1964 "error: invalid argument combination.\n" | |
1965 "Allocation profiling (-Xaprof) cannot be used together with " | |
1966 "Parallel GC (-XX:+UseParallelGC or -XX:+UseParallelOldGC).\n"); | |
1967 status = false; | |
1968 } | |
1969 if (UseConcMarkSweepGC) { | |
1970 jio_fprintf(defaultStream::error_stream(), | |
1971 "error: invalid argument combination.\n" | |
1972 "Allocation profiling (-Xaprof) cannot be used together with " | |
1973 "the CMS collector (-XX:+UseConcMarkSweepGC).\n"); | |
1974 status = false; | |
1975 } | |
1976 } | |
1977 | |
1978 if (CMSIncrementalMode) { | |
1979 if (!UseConcMarkSweepGC) { | |
1980 jio_fprintf(defaultStream::error_stream(), | |
1981 "error: invalid argument combination.\n" | |
1982 "The CMS collector (-XX:+UseConcMarkSweepGC) must be " | |
1983 "selected in order\nto use CMSIncrementalMode.\n"); | |
1984 status = false; | |
1985 } else { | |
10
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1986 status = status && verify_percentage(CMSIncrementalDutyCycle, |
0 | 1987 "CMSIncrementalDutyCycle"); |
10
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1988 status = status && verify_percentage(CMSIncrementalDutyCycleMin, |
0 | 1989 "CMSIncrementalDutyCycleMin"); |
10
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1990 status = status && verify_percentage(CMSIncrementalSafetyFactor, |
0 | 1991 "CMSIncrementalSafetyFactor"); |
10
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1992 status = status && verify_percentage(CMSIncrementalOffset, |
0 | 1993 "CMSIncrementalOffset"); |
10
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1994 status = status && verify_percentage(CMSExpAvgFactor, |
0 | 1995 "CMSExpAvgFactor"); |
1996 // If it was not set on the command line, set | |
1997 // CMSInitiatingOccupancyFraction to 1 so icms can initiate cycles early. | |
1998 if (CMSInitiatingOccupancyFraction < 0) { | |
1999 FLAG_SET_DEFAULT(CMSInitiatingOccupancyFraction, 1); | |
2000 } | |
2001 } | |
2002 } | |
2003 | |
2004 // CMS space iteration, which FLSVerifyAllHeapreferences entails, | |
2005 // insists that we hold the requisite locks so that the iteration is | |
2006 // MT-safe. For the verification at start-up and shut-down, we don't | |
2007 // yet have a good way of acquiring and releasing these locks, | |
2008 // which are not visible at the CollectedHeap level. We want to | |
2009 // be able to acquire these locks and then do the iteration rather | |
2010 // than just disable the lock verification. This will be fixed under | |
2011 // bug 4788986. | |
2012 if (UseConcMarkSweepGC && FLSVerifyAllHeapReferences) { | |
9071
68fe50d4f1d5
8011343: Add new flag for verifying the heap during startup
johnc
parents:
8859
diff
changeset
|
2013 if (VerifyDuringStartup) { |
0 | 2014 warning("Heap verification at start-up disabled " |
2015 "(due to current incompatibility with FLSVerifyAllHeapReferences)"); | |
9071
68fe50d4f1d5
8011343: Add new flag for verifying the heap during startup
johnc
parents:
8859
diff
changeset
|
2016 VerifyDuringStartup = false; // Disable verification at start-up |
0 | 2017 } |
9071
68fe50d4f1d5
8011343: Add new flag for verifying the heap during startup
johnc
parents:
8859
diff
changeset
|
2018 |
0 | 2019 if (VerifyBeforeExit) { |
2020 warning("Heap verification at shutdown disabled " | |
2021 "(due to current incompatibility with FLSVerifyAllHeapReferences)"); | |
2022 VerifyBeforeExit = false; // Disable verification at shutdown | |
2023 } | |
2024 } | |
2025 | |
2026 // Note: only executed in non-PRODUCT mode | |
2027 if (!UseAsyncConcMarkSweepGC && | |
2028 (ExplicitGCInvokesConcurrent || | |
2029 ExplicitGCInvokesConcurrentAndUnloadsClasses)) { | |
2030 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
|
2031 "error: +ExplicitGCInvokesConcurrent[AndUnloadsClasses] conflicts" |
0 | 2032 " with -UseAsyncConcMarkSweepGC"); |
2033 status = false; | |
2034 } | |
2035 | |
2366
1fb790245268
6820066: Check that -XX:ParGCArrayScanChunk has a value larger than zero.
jwilhelm
parents:
2362
diff
changeset
|
2036 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
|
2037 |
8001
db9981fd3124
8005915: Unify SERIALGC and INCLUDE_ALTERNATE_GCS
jprovino
parents:
7479
diff
changeset
|
2038 #if INCLUDE_ALL_GCS |
1283
1c72304f1885
6928073: G1: use existing command line parameters for marking cycle initiation
tonyp
parents:
1257
diff
changeset
|
2039 if (UseG1GC) { |
1c72304f1885
6928073: G1: use existing command line parameters for marking cycle initiation
tonyp
parents:
1257
diff
changeset
|
2040 status = status && verify_percentage(InitiatingHeapOccupancyPercent, |
1c72304f1885
6928073: G1: use existing command line parameters for marking cycle initiation
tonyp
parents:
1257
diff
changeset
|
2041 "InitiatingHeapOccupancyPercent"); |
2174
234761c55641
6608385: G1: need to support parallel reference processing
johnc
parents:
2129
diff
changeset
|
2042 status = status && verify_min_value(G1RefProcDrainInterval, 1, |
234761c55641
6608385: G1: need to support parallel reference processing
johnc
parents:
2129
diff
changeset
|
2043 "G1RefProcDrainInterval"); |
234761c55641
6608385: G1: need to support parallel reference processing
johnc
parents:
2129
diff
changeset
|
2044 status = status && verify_min_value((intx)G1ConcMarkStepDurationMillis, 1, |
234761c55641
6608385: G1: need to support parallel reference processing
johnc
parents:
2129
diff
changeset
|
2045 "G1ConcMarkStepDurationMillis"); |
1283
1c72304f1885
6928073: G1: use existing command line parameters for marking cycle initiation
tonyp
parents:
1257
diff
changeset
|
2046 } |
8001
db9981fd3124
8005915: Unify SERIALGC and INCLUDE_ALTERNATE_GCS
jprovino
parents:
7479
diff
changeset
|
2047 #endif // INCLUDE_ALL_GCS |
1283
1c72304f1885
6928073: G1: use existing command line parameters for marking cycle initiation
tonyp
parents:
1257
diff
changeset
|
2048 |
1244
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
2049 status = status && verify_interval(RefDiscoveryPolicy, |
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
2050 ReferenceProcessor::DiscoveryPolicyMin, |
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
2051 ReferenceProcessor::DiscoveryPolicyMax, |
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
2052 "RefDiscoveryPolicy"); |
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
2053 |
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
2054 // 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
|
2055 // expression. |
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
2056 status = status && verify_interval(TLABWasteTargetPercent, |
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
2057 1, 100, "TLABWasteTargetPercent"); |
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
2058 |
1571
2d127394260e
6916623: Align object to 16 bytes to use Compressed Oops with java heap up to 64Gb
kvn
parents:
1506
diff
changeset
|
2059 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
|
2060 |
6736
11fb740ce98f
7196103: NPG: Unable to allocate bit map for parallel garbage collection for the requested heap size
coleenp
parents:
6725
diff
changeset
|
2061 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
|
2062 "ClassMetaspaceSize"); |
11fb740ce98f
7196103: NPG: Unable to allocate bit map for parallel garbage collection for the requested heap size
coleenp
parents:
6725
diff
changeset
|
2063 |
7397
442f942757c0
8000244: G1: Ergonomically set MarkStackSize and use virtual space for global marking stack
johnc
parents:
7177
diff
changeset
|
2064 status = status && verify_interval(MarkStackSizeMax, |
442f942757c0
8000244: G1: Ergonomically set MarkStackSize and use virtual space for global marking stack
johnc
parents:
7177
diff
changeset
|
2065 1, (max_jint - 1), "MarkStackSizeMax"); |
442f942757c0
8000244: G1: Ergonomically set MarkStackSize and use virtual space for global marking stack
johnc
parents:
7177
diff
changeset
|
2066 |
6755
bc675e55b48c
7193946: Move warnings associated with UseMemSetInBOT flag
johnc
parents:
6736
diff
changeset
|
2067 #ifdef SPARC |
bc675e55b48c
7193946: Move warnings associated with UseMemSetInBOT flag
johnc
parents:
6736
diff
changeset
|
2068 if (UseConcMarkSweepGC || UseG1GC) { |
bc675e55b48c
7193946: Move warnings associated with UseMemSetInBOT flag
johnc
parents:
6736
diff
changeset
|
2069 // Issue a stern warning if the user has explicitly set |
bc675e55b48c
7193946: Move warnings associated with UseMemSetInBOT flag
johnc
parents:
6736
diff
changeset
|
2070 // UseMemSetInBOT (it is known to cause issues), but allow |
bc675e55b48c
7193946: Move warnings associated with UseMemSetInBOT flag
johnc
parents:
6736
diff
changeset
|
2071 // use for experimentation and debugging. |
bc675e55b48c
7193946: Move warnings associated with UseMemSetInBOT flag
johnc
parents:
6736
diff
changeset
|
2072 if (VM_Version::is_sun4v() && UseMemSetInBOT) { |
bc675e55b48c
7193946: Move warnings associated with UseMemSetInBOT flag
johnc
parents:
6736
diff
changeset
|
2073 assert(!FLAG_IS_DEFAULT(UseMemSetInBOT), "Error"); |
bc675e55b48c
7193946: Move warnings associated with UseMemSetInBOT flag
johnc
parents:
6736
diff
changeset
|
2074 warning("Experimental flag -XX:+UseMemSetInBOT is known to cause instability" |
bc675e55b48c
7193946: Move warnings associated with UseMemSetInBOT flag
johnc
parents:
6736
diff
changeset
|
2075 " 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
|
2076 } |
bc675e55b48c
7193946: Move warnings associated with UseMemSetInBOT flag
johnc
parents:
6736
diff
changeset
|
2077 } |
bc675e55b48c
7193946: Move warnings associated with UseMemSetInBOT flag
johnc
parents:
6736
diff
changeset
|
2078 #endif // SPARC |
bc675e55b48c
7193946: Move warnings associated with UseMemSetInBOT flag
johnc
parents:
6736
diff
changeset
|
2079 |
6854
fb19af007ffc
7189254: Change makefiles for more flexibility to override defaults
jprovino
parents:
6818
diff
changeset
|
2080 if (PrintNMTStatistics) { |
fb19af007ffc
7189254: Change makefiles for more flexibility to override defaults
jprovino
parents:
6818
diff
changeset
|
2081 #if INCLUDE_NMT |
fb19af007ffc
7189254: Change makefiles for more flexibility to override defaults
jprovino
parents:
6818
diff
changeset
|
2082 if (MemTracker::tracking_level() == MemTracker::NMT_off) { |
fb19af007ffc
7189254: Change makefiles for more flexibility to override defaults
jprovino
parents:
6818
diff
changeset
|
2083 #endif // INCLUDE_NMT |
fb19af007ffc
7189254: Change makefiles for more flexibility to override defaults
jprovino
parents:
6818
diff
changeset
|
2084 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
|
2085 PrintNMTStatistics = false; |
fb19af007ffc
7189254: Change makefiles for more flexibility to override defaults
jprovino
parents:
6818
diff
changeset
|
2086 #if INCLUDE_NMT |
fb19af007ffc
7189254: Change makefiles for more flexibility to override defaults
jprovino
parents:
6818
diff
changeset
|
2087 } |
fb19af007ffc
7189254: Change makefiles for more flexibility to override defaults
jprovino
parents:
6818
diff
changeset
|
2088 #endif |
6770
9a86ddfc6c8f
7188594: Print statistic collected by NMT with VM flag
zgu
parents:
6736
diff
changeset
|
2089 } |
9a86ddfc6c8f
7188594: Print statistic collected by NMT with VM flag
zgu
parents:
6736
diff
changeset
|
2090 |
0 | 2091 return status; |
2092 } | |
2093 | |
2094 bool Arguments::is_bad_option(const JavaVMOption* option, jboolean ignore, | |
2095 const char* option_type) { | |
2096 if (ignore) return false; | |
2097 | |
2098 const char* spacer = " "; | |
2099 if (option_type == NULL) { | |
2100 option_type = ++spacer; // Set both to the empty string. | |
2101 } | |
2102 | |
2103 if (os::obsolete_option(option)) { | |
2104 jio_fprintf(defaultStream::error_stream(), | |
2105 "Obsolete %s%soption: %s\n", option_type, spacer, | |
2106 option->optionString); | |
2107 return false; | |
2108 } else { | |
2109 jio_fprintf(defaultStream::error_stream(), | |
2110 "Unrecognized %s%soption: %s\n", option_type, spacer, | |
2111 option->optionString); | |
2112 return true; | |
2113 } | |
2114 } | |
2115 | |
2116 static const char* user_assertion_options[] = { | |
2117 "-da", "-ea", "-disableassertions", "-enableassertions", 0 | |
2118 }; | |
2119 | |
2120 static const char* system_assertion_options[] = { | |
2121 "-dsa", "-esa", "-disablesystemassertions", "-enablesystemassertions", 0 | |
2122 }; | |
2123 | |
2124 // Return true if any of the strings in null-terminated array 'names' matches. | |
2125 // If tail_allowed is true, then the tail must begin with a colon; otherwise, | |
2126 // the option must match exactly. | |
2127 static bool match_option(const JavaVMOption* option, const char** names, const char** tail, | |
2128 bool tail_allowed) { | |
2129 for (/* empty */; *names != NULL; ++names) { | |
2130 if (match_option(option, *names, tail)) { | |
2131 if (**tail == '\0' || tail_allowed && **tail == ':') { | |
2132 return true; | |
2133 } | |
2134 } | |
2135 } | |
2136 return false; | |
2137 } | |
2138 | |
1284 | 2139 bool Arguments::parse_uintx(const char* value, |
2140 uintx* uintx_arg, | |
2141 uintx min_size) { | |
2142 | |
2143 // Check the sign first since atomull() parses only unsigned values. | |
2144 bool value_is_positive = !(*value == '-'); | |
2145 | |
2146 if (value_is_positive) { | |
2147 julong n; | |
2148 bool good_return = atomull(value, &n); | |
2149 if (good_return) { | |
2150 bool above_minimum = n >= min_size; | |
2151 bool value_is_too_large = n > max_uintx; | |
2152 | |
2153 if (above_minimum && !value_is_too_large) { | |
2154 *uintx_arg = n; | |
2155 return true; | |
2156 } | |
2157 } | |
2158 } | |
2159 return false; | |
2160 } | |
2161 | |
0 | 2162 Arguments::ArgsRange Arguments::parse_memory_size(const char* s, |
489
2494ab195856
6653214: MemoryPoolMXBean.setUsageThreshold() does not support large heap sizes.
swamyv
parents:
483
diff
changeset
|
2163 julong* long_arg, |
2494ab195856
6653214: MemoryPoolMXBean.setUsageThreshold() does not support large heap sizes.
swamyv
parents:
483
diff
changeset
|
2164 julong min_size) { |
2494ab195856
6653214: MemoryPoolMXBean.setUsageThreshold() does not support large heap sizes.
swamyv
parents:
483
diff
changeset
|
2165 if (!atomull(s, long_arg)) return arg_unreadable; |
0 | 2166 return check_memory_size(*long_arg, min_size); |
2167 } | |
2168 | |
2169 // Parse JavaVMInitArgs structure | |
2170 | |
2171 jint Arguments::parse_vm_init_args(const JavaVMInitArgs* args) { | |
2172 // For components of the system classpath. | |
2173 SysClassPath scp(Arguments::get_sysclasspath()); | |
2174 bool scp_assembly_required = false; | |
2175 | |
2176 // Save default settings for some mode flags | |
2177 Arguments::_AlwaysCompileLoopMethods = AlwaysCompileLoopMethods; | |
2178 Arguments::_UseOnStackReplacement = UseOnStackReplacement; | |
2179 Arguments::_ClipInlining = ClipInlining; | |
2180 Arguments::_BackgroundCompilation = BackgroundCompilation; | |
2181 | |
3341
e9b8ef09622a
7041582: set_mode_flags isn't called without -Xmixed specified
never
parents:
3261
diff
changeset
|
2182 // Setup flags for mixed which is the default |
e9b8ef09622a
7041582: set_mode_flags isn't called without -Xmixed specified
never
parents:
3261
diff
changeset
|
2183 set_mode_flags(_mixed); |
e9b8ef09622a
7041582: set_mode_flags isn't called without -Xmixed specified
never
parents:
3261
diff
changeset
|
2184 |
0 | 2185 // Parse JAVA_TOOL_OPTIONS environment variable (if present) |
2186 jint result = parse_java_tool_options_environment_variable(&scp, &scp_assembly_required); | |
2187 if (result != JNI_OK) { | |
2188 return result; | |
2189 } | |
2190 | |
2191 // Parse JavaVMInitArgs structure passed in | |
2192 result = parse_each_vm_init_arg(args, &scp, &scp_assembly_required, COMMAND_LINE); | |
2193 if (result != JNI_OK) { | |
2194 return result; | |
2195 } | |
2196 | |
531
40ee984935b9
6792705: Add JAR file to bootclasspath when using AggressiveOpts
phh
parents:
513
diff
changeset
|
2197 if (AggressiveOpts) { |
40ee984935b9
6792705: Add JAR file to bootclasspath when using AggressiveOpts
phh
parents:
513
diff
changeset
|
2198 // Insert alt-rt.jar between user-specified bootclasspath |
40ee984935b9
6792705: Add JAR file to bootclasspath when using AggressiveOpts
phh
parents:
513
diff
changeset
|
2199 // prefix and the default bootclasspath. os::set_boot_path() |
40ee984935b9
6792705: Add JAR file to bootclasspath when using AggressiveOpts
phh
parents:
513
diff
changeset
|
2200 // uses meta_index_dir as the default bootclasspath directory. |
40ee984935b9
6792705: Add JAR file to bootclasspath when using AggressiveOpts
phh
parents:
513
diff
changeset
|
2201 const char* altclasses_jar = "alt-rt.jar"; |
40ee984935b9
6792705: Add JAR file to bootclasspath when using AggressiveOpts
phh
parents:
513
diff
changeset
|
2202 size_t altclasses_path_len = strlen(get_meta_index_dir()) + 1 + |
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2203 strlen(altclasses_jar); |
6197 | 2204 char* altclasses_path = NEW_C_HEAP_ARRAY(char, altclasses_path_len, mtInternal); |
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2205 strcpy(altclasses_path, get_meta_index_dir()); |
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2206 strcat(altclasses_path, altclasses_jar); |
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2207 scp.add_suffix_to_prefix(altclasses_path); |
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2208 scp_assembly_required = true; |
6197 | 2209 FREE_C_HEAP_ARRAY(char, altclasses_path, mtInternal); |
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2210 } |
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2211 |
0 | 2212 // Parse _JAVA_OPTIONS environment variable (if present) (mimics classic VM) |
2213 result = parse_java_options_environment_variable(&scp, &scp_assembly_required); | |
2214 if (result != JNI_OK) { | |
2215 return result; | |
2216 } | |
2217 | |
2218 // Do final processing now that all arguments have been parsed | |
2219 result = finalize_vm_init_args(&scp, scp_assembly_required); | |
2220 if (result != JNI_OK) { | |
2221 return result; | |
2222 } | |
2223 | |
2224 return JNI_OK; | |
2225 } | |
2226 | |
2227 jint Arguments::parse_each_vm_init_arg(const JavaVMInitArgs* args, | |
2228 SysClassPath* scp_p, | |
2229 bool* scp_assembly_required_p, | |
2230 FlagValueOrigin origin) { | |
2231 // Remaining part of option string | |
2232 const char* tail; | |
2233 | |
2234 // iterate over arguments | |
2235 for (int index = 0; index < args->nOptions; index++) { | |
2236 bool is_absolute_path = false; // for -agentpath vs -agentlib | |
2237 | |
2238 const JavaVMOption* option = args->options + index; | |
2239 | |
2240 if (!match_option(option, "-Djava.class.path", &tail) && | |
2241 !match_option(option, "-Dsun.java.command", &tail) && | |
2242 !match_option(option, "-Dsun.java.launcher", &tail)) { | |
2243 | |
2244 // add all jvm options to the jvm_args string. This string | |
2245 // is used later to set the java.vm.args PerfData string constant. | |
2246 // the -Djava.class.path and the -Dsun.java.command options are | |
2247 // omitted from jvm_args string as each have their own PerfData | |
2248 // string constant object. | |
2249 build_jvm_args(option->optionString); | |
2250 } | |
2251 | |
2252 // -verbose:[class/gc/jni] | |
2253 if (match_option(option, "-verbose", &tail)) { | |
2254 if (!strcmp(tail, ":class") || !strcmp(tail, "")) { | |
2255 FLAG_SET_CMDLINE(bool, TraceClassLoading, true); | |
2256 FLAG_SET_CMDLINE(bool, TraceClassUnloading, true); | |
2257 } else if (!strcmp(tail, ":gc")) { | |
2258 FLAG_SET_CMDLINE(bool, PrintGC, true); | |
2259 } else if (!strcmp(tail, ":jni")) { | |
2260 FLAG_SET_CMDLINE(bool, PrintJNIResolving, true); | |
2261 } | |
2262 // -da / -ea / -disableassertions / -enableassertions | |
2263 // These accept an optional class/package name separated by a colon, e.g., | |
2264 // -da:java.lang.Thread. | |
2265 } else if (match_option(option, user_assertion_options, &tail, true)) { | |
2266 bool enable = option->optionString[1] == 'e'; // char after '-' is 'e' | |
2267 if (*tail == '\0') { | |
2268 JavaAssertions::setUserClassDefault(enable); | |
2269 } else { | |
2270 assert(*tail == ':', "bogus match by match_option()"); | |
2271 JavaAssertions::addOption(tail + 1, enable); | |
2272 } | |
2273 // -dsa / -esa / -disablesystemassertions / -enablesystemassertions | |
2274 } else if (match_option(option, system_assertion_options, &tail, false)) { | |
2275 bool enable = option->optionString[1] == 'e'; // char after '-' is 'e' | |
2276 JavaAssertions::setSystemClassDefault(enable); | |
2277 // -bootclasspath: | |
2278 } else if (match_option(option, "-Xbootclasspath:", &tail)) { | |
2279 scp_p->reset_path(tail); | |
2280 *scp_assembly_required_p = true; | |
2281 // -bootclasspath/a: | |
2282 } else if (match_option(option, "-Xbootclasspath/a:", &tail)) { | |
2283 scp_p->add_suffix(tail); | |
2284 *scp_assembly_required_p = true; | |
2285 // -bootclasspath/p: | |
2286 } else if (match_option(option, "-Xbootclasspath/p:", &tail)) { | |
2287 scp_p->add_prefix(tail); | |
2288 *scp_assembly_required_p = true; | |
2289 // -Xrun | |
2290 } else if (match_option(option, "-Xrun", &tail)) { | |
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2291 if (tail != NULL) { |
0 | 2292 const char* pos = strchr(tail, ':'); |
2293 size_t len = (pos == NULL) ? strlen(tail) : pos - tail; | |
6197 | 2294 char* name = (char*)memcpy(NEW_C_HEAP_ARRAY(char, len + 1, mtInternal), tail, len); |
0 | 2295 name[len] = '\0'; |
2296 | |
2297 char *options = NULL; | |
2298 if(pos != NULL) { | |
2299 size_t len2 = strlen(pos+1) + 1; // options start after ':'. Final zero must be copied. | |
6197 | 2300 options = (char*)memcpy(NEW_C_HEAP_ARRAY(char, len2, mtInternal), pos+1, len2); |
0 | 2301 } |
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2302 #if !INCLUDE_JVMTI |
0 | 2303 if ((strcmp(name, "hprof") == 0) || (strcmp(name, "jdwp") == 0)) { |
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2304 jio_fprintf(defaultStream::error_stream(), |
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2305 "Profiling and debugging agents are not supported in this VM\n"); |
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2306 return JNI_ERR; |
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2307 } |
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2308 #endif // !INCLUDE_JVMTI |
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2309 add_init_library(name, options); |
0 | 2310 } |
2311 // -agentlib and -agentpath | |
2312 } else if (match_option(option, "-agentlib:", &tail) || | |
2313 (is_absolute_path = match_option(option, "-agentpath:", &tail))) { | |
2314 if(tail != NULL) { | |
2315 const char* pos = strchr(tail, '='); | |
2316 size_t len = (pos == NULL) ? strlen(tail) : pos - tail; | |
6197 | 2317 char* name = strncpy(NEW_C_HEAP_ARRAY(char, len + 1, mtInternal), tail, len); |
0 | 2318 name[len] = '\0'; |
2319 | |
2320 char *options = NULL; | |
2321 if(pos != NULL) { | |
6197 | 2322 options = strcpy(NEW_C_HEAP_ARRAY(char, strlen(pos + 1) + 1, mtInternal), pos + 1); |
0 | 2323 } |
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2324 #if !INCLUDE_JVMTI |
0 | 2325 if ((strcmp(name, "hprof") == 0) || (strcmp(name, "jdwp") == 0)) { |
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2326 jio_fprintf(defaultStream::error_stream(), |
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2327 "Profiling and debugging agents are not supported in this VM\n"); |
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2328 return JNI_ERR; |
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2329 } |
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2330 #endif // !INCLUDE_JVMTI |
0 | 2331 add_init_agent(name, options, is_absolute_path); |
2332 } | |
2333 // -javaagent | |
2334 } else if (match_option(option, "-javaagent:", &tail)) { | |
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2335 #if !INCLUDE_JVMTI |
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2336 jio_fprintf(defaultStream::error_stream(), |
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2337 "Instrumentation agents are not supported in this VM\n"); |
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2338 return JNI_ERR; |
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2339 #else |
0 | 2340 if(tail != NULL) { |
6197 | 2341 char *options = strcpy(NEW_C_HEAP_ARRAY(char, strlen(tail) + 1, mtInternal), tail); |
0 | 2342 add_init_agent("instrument", options, false); |
2343 } | |
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2344 #endif // !INCLUDE_JVMTI |
0 | 2345 // -Xnoclassgc |
2346 } else if (match_option(option, "-Xnoclassgc", &tail)) { | |
2347 FLAG_SET_CMDLINE(bool, ClassUnloading, false); | |
2348 // -Xincgc: i-CMS | |
2349 } else if (match_option(option, "-Xincgc", &tail)) { | |
2350 FLAG_SET_CMDLINE(bool, UseConcMarkSweepGC, true); | |
2351 FLAG_SET_CMDLINE(bool, CMSIncrementalMode, true); | |
2352 // -Xnoincgc: no i-CMS | |
2353 } else if (match_option(option, "-Xnoincgc", &tail)) { | |
2354 FLAG_SET_CMDLINE(bool, UseConcMarkSweepGC, false); | |
2355 FLAG_SET_CMDLINE(bool, CMSIncrementalMode, false); | |
2356 // -Xconcgc | |
2357 } else if (match_option(option, "-Xconcgc", &tail)) { | |
2358 FLAG_SET_CMDLINE(bool, UseConcMarkSweepGC, true); | |
2359 // -Xnoconcgc | |
2360 } else if (match_option(option, "-Xnoconcgc", &tail)) { | |
2361 FLAG_SET_CMDLINE(bool, UseConcMarkSweepGC, false); | |
2362 // -Xbatch | |
2363 } else if (match_option(option, "-Xbatch", &tail)) { | |
2364 FLAG_SET_CMDLINE(bool, BackgroundCompilation, false); | |
2365 // -Xmn for compatibility with other JVM vendors | |
2366 } else if (match_option(option, "-Xmn", &tail)) { | |
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2367 julong long_initial_eden_size = 0; |
0 | 2368 ArgsRange errcode = parse_memory_size(tail, &long_initial_eden_size, 1); |
2369 if (errcode != arg_in_range) { | |
2370 jio_fprintf(defaultStream::error_stream(), | |
2371 "Invalid initial eden size: %s\n", option->optionString); | |
2372 describe_range_error(errcode); | |
2373 return JNI_EINVAL; | |
2374 } | |
1064 | 2375 FLAG_SET_CMDLINE(uintx, MaxNewSize, (uintx)long_initial_eden_size); |
2376 FLAG_SET_CMDLINE(uintx, NewSize, (uintx)long_initial_eden_size); | |
0 | 2377 // -Xms |
2378 } else if (match_option(option, "-Xms", &tail)) { | |
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2379 julong long_initial_heap_size = 0; |
0 | 2380 ArgsRange errcode = parse_memory_size(tail, &long_initial_heap_size, 1); |
2381 if (errcode != arg_in_range) { | |
2382 jio_fprintf(defaultStream::error_stream(), | |
2383 "Invalid initial heap size: %s\n", option->optionString); | |
2384 describe_range_error(errcode); | |
2385 return JNI_EINVAL; | |
2386 } | |
1064 | 2387 FLAG_SET_CMDLINE(uintx, InitialHeapSize, (uintx)long_initial_heap_size); |
0 | 2388 // Currently the minimum size and the initial heap sizes are the same. |
1064 | 2389 set_min_heap_size(InitialHeapSize); |
0 | 2390 // -Xmx |
2391 } else if (match_option(option, "-Xmx", &tail)) { | |
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2392 julong long_max_heap_size = 0; |
0 | 2393 ArgsRange errcode = parse_memory_size(tail, &long_max_heap_size, 1); |
2394 if (errcode != arg_in_range) { | |
2395 jio_fprintf(defaultStream::error_stream(), | |
2396 "Invalid maximum heap size: %s\n", option->optionString); | |
2397 describe_range_error(errcode); | |
2398 return JNI_EINVAL; | |
2399 } | |
1064 | 2400 FLAG_SET_CMDLINE(uintx, MaxHeapSize, (uintx)long_max_heap_size); |
0 | 2401 // Xmaxf |
2402 } else if (match_option(option, "-Xmaxf", &tail)) { | |
2403 int maxf = (int)(atof(tail) * 100); | |
2404 if (maxf < 0 || maxf > 100) { | |
2405 jio_fprintf(defaultStream::error_stream(), | |
2406 "Bad max heap free percentage size: %s\n", | |
2407 option->optionString); | |
2408 return JNI_EINVAL; | |
2409 } else { | |
2410 FLAG_SET_CMDLINE(uintx, MaxHeapFreeRatio, maxf); | |
2411 } | |
2412 // Xminf | |
2413 } else if (match_option(option, "-Xminf", &tail)) { | |
2414 int minf = (int)(atof(tail) * 100); | |
2415 if (minf < 0 || minf > 100) { | |
2416 jio_fprintf(defaultStream::error_stream(), | |
2417 "Bad min heap free percentage size: %s\n", | |
2418 option->optionString); | |
2419 return JNI_EINVAL; | |
2420 } else { | |
2421 FLAG_SET_CMDLINE(uintx, MinHeapFreeRatio, minf); | |
2422 } | |
2423 // -Xss | |
2424 } else if (match_option(option, "-Xss", &tail)) { | |
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2425 julong long_ThreadStackSize = 0; |
0 | 2426 ArgsRange errcode = parse_memory_size(tail, &long_ThreadStackSize, 1000); |
2427 if (errcode != arg_in_range) { | |
2428 jio_fprintf(defaultStream::error_stream(), | |
2429 "Invalid thread stack size: %s\n", option->optionString); | |
2430 describe_range_error(errcode); | |
2431 return JNI_EINVAL; | |
2432 } | |
2433 // Internally track ThreadStackSize in units of 1024 bytes. | |
2434 FLAG_SET_CMDLINE(intx, ThreadStackSize, | |
2435 round_to((int)long_ThreadStackSize, K) / K); | |
2436 // -Xoss | |
2437 } else if (match_option(option, "-Xoss", &tail)) { | |
2438 // HotSpot does not have separate native and Java stacks, ignore silently for compatibility | |
2439 // -Xmaxjitcodesize | |
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2440 } else if (match_option(option, "-Xmaxjitcodesize", &tail) || |
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2441 match_option(option, "-XX:ReservedCodeCacheSize=", &tail)) { |
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2442 julong long_ReservedCodeCacheSize = 0; |
0 | 2443 ArgsRange errcode = parse_memory_size(tail, &long_ReservedCodeCacheSize, |
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2444 (size_t)InitialCodeCacheSize); |
0 | 2445 if (errcode != arg_in_range) { |
2446 jio_fprintf(defaultStream::error_stream(), | |
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2447 "Invalid maximum code cache size: %s. Should be greater than InitialCodeCacheSize=%dK\n", |
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2448 option->optionString, InitialCodeCacheSize/K); |
0 | 2449 describe_range_error(errcode); |
2450 return JNI_EINVAL; | |
2451 } | |
2452 FLAG_SET_CMDLINE(uintx, ReservedCodeCacheSize, (uintx)long_ReservedCodeCacheSize); | |
2453 // -green | |
2454 } else if (match_option(option, "-green", &tail)) { | |
2455 jio_fprintf(defaultStream::error_stream(), | |
2456 "Green threads support not available\n"); | |
2457 return JNI_EINVAL; | |
2458 // -native | |
2459 } else if (match_option(option, "-native", &tail)) { | |
2460 // HotSpot always uses native threads, ignore silently for compatibility | |
2461 // -Xsqnopause | |
2462 } else if (match_option(option, "-Xsqnopause", &tail)) { | |
2463 // EVM option, ignore silently for compatibility | |
2464 // -Xrs | |
2465 } else if (match_option(option, "-Xrs", &tail)) { | |
2466 // Classic/EVM option, new functionality | |
2467 FLAG_SET_CMDLINE(bool, ReduceSignalUsage, true); | |
2468 } else if (match_option(option, "-Xusealtsigs", &tail)) { | |
2469 // change default internal VM signals used - lower case for back compat | |
2470 FLAG_SET_CMDLINE(bool, UseAltSigs, true); | |
2471 // -Xoptimize | |
2472 } else if (match_option(option, "-Xoptimize", &tail)) { | |
2473 // EVM option, ignore silently for compatibility | |
2474 // -Xprof | |
2475 } else if (match_option(option, "-Xprof", &tail)) { | |
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2476 #if INCLUDE_FPROF |
0 | 2477 _has_profile = true; |
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2478 #else // INCLUDE_FPROF |
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2479 jio_fprintf(defaultStream::error_stream(), |
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2480 "Flat profiling is not supported in this VM.\n"); |
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2481 return JNI_ERR; |
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2482 #endif // INCLUDE_FPROF |
0 | 2483 // -Xaprof |
2484 } else if (match_option(option, "-Xaprof", &tail)) { | |
2485 _has_alloc_profile = true; | |
2486 // -Xconcurrentio | |
2487 } else if (match_option(option, "-Xconcurrentio", &tail)) { | |
2488 FLAG_SET_CMDLINE(bool, UseLWPSynchronization, true); | |
2489 FLAG_SET_CMDLINE(bool, BackgroundCompilation, false); | |
2490 FLAG_SET_CMDLINE(intx, DeferThrSuspendLoopCount, 1); | |
2491 FLAG_SET_CMDLINE(bool, UseTLAB, false); | |
2492 FLAG_SET_CMDLINE(uintx, NewSizeThreadIncrease, 16 * K); // 20Kb per thread added to new generation | |
2493 | |
2494 // -Xinternalversion | |
2495 } else if (match_option(option, "-Xinternalversion", &tail)) { | |
2496 jio_fprintf(defaultStream::output_stream(), "%s\n", | |
2497 VM_Version::internal_vm_info_string()); | |
2498 vm_exit(0); | |
2499 #ifndef PRODUCT | |
2500 // -Xprintflags | |
2501 } else if (match_option(option, "-Xprintflags", &tail)) { | |
4773 | 2502 CommandLineFlags::printFlags(tty, false); |
0 | 2503 vm_exit(0); |
2504 #endif | |
2505 // -D | |
2506 } else if (match_option(option, "-D", &tail)) { | |
2507 if (!add_property(tail)) { | |
2508 return JNI_ENOMEM; | |
2509 } | |
2510 // Out of the box management support | |
2511 if (match_option(option, "-Dcom.sun.management", &tail)) { | |
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2512 #if INCLUDE_MANAGEMENT |
0 | 2513 FLAG_SET_CMDLINE(bool, ManagementServer, true); |
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2514 #else |
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2515 jio_fprintf(defaultStream::output_stream(), |
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|
2516 "-Dcom.sun.management is not supported in this VM.\n"); |
fad90b102190
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|
2517 return JNI_ERR; |
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579f6adb7f51
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diff
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|
2518 #endif |
0 | 2519 } |
2520 // -Xint | |
2521 } else if (match_option(option, "-Xint", &tail)) { | |
2522 set_mode_flags(_int); | |
2523 // -Xmixed | |
2524 } else if (match_option(option, "-Xmixed", &tail)) { | |
2525 set_mode_flags(_mixed); | |
2526 // -Xcomp | |
2527 } else if (match_option(option, "-Xcomp", &tail)) { | |
2528 // for testing the compiler; turn off all flags that inhibit compilation | |
2529 set_mode_flags(_comp); | |
2530 // -Xshare:dump | |
2531 } else if (match_option(option, "-Xshare:dump", &tail)) { | |
2532 FLAG_SET_CMDLINE(bool, DumpSharedSpaces, true); | |
2533 set_mode_flags(_int); // Prevent compilation, which creates objects | |
2534 // -Xshare:on | |
2535 } else if (match_option(option, "-Xshare:on", &tail)) { | |
2536 FLAG_SET_CMDLINE(bool, UseSharedSpaces, true); | |
2537 FLAG_SET_CMDLINE(bool, RequireSharedSpaces, true); | |
2538 // -Xshare:auto | |
2539 } else if (match_option(option, "-Xshare:auto", &tail)) { | |
2540 FLAG_SET_CMDLINE(bool, UseSharedSpaces, true); | |
2541 FLAG_SET_CMDLINE(bool, RequireSharedSpaces, false); | |
2542 // -Xshare:off | |
2543 } else if (match_option(option, "-Xshare:off", &tail)) { | |
2544 FLAG_SET_CMDLINE(bool, UseSharedSpaces, false); | |
2545 FLAG_SET_CMDLINE(bool, RequireSharedSpaces, false); | |
2546 // -Xverify | |
2547 } else if (match_option(option, "-Xverify", &tail)) { | |
2548 if (strcmp(tail, ":all") == 0 || strcmp(tail, "") == 0) { | |
2549 FLAG_SET_CMDLINE(bool, BytecodeVerificationLocal, true); | |
2550 FLAG_SET_CMDLINE(bool, BytecodeVerificationRemote, true); | |
2551 } else if (strcmp(tail, ":remote") == 0) { | |
2552 FLAG_SET_CMDLINE(bool, BytecodeVerificationLocal, false); | |
2553 FLAG_SET_CMDLINE(bool, BytecodeVerificationRemote, true); | |
2554 } else if (strcmp(tail, ":none") == 0) { | |
2555 FLAG_SET_CMDLINE(bool, BytecodeVerificationLocal, false); | |
2556 FLAG_SET_CMDLINE(bool, BytecodeVerificationRemote, false); | |
2557 } else if (is_bad_option(option, args->ignoreUnrecognized, "verification")) { | |
2558 return JNI_EINVAL; | |
2559 } | |
2560 // -Xdebug | |
2561 } else if (match_option(option, "-Xdebug", &tail)) { | |
2562 // note this flag has been used, then ignore | |
2563 set_xdebug_mode(true); | |
2564 // -Xnoagent | |
2565 } else if (match_option(option, "-Xnoagent", &tail)) { | |
2566 // For compatibility with classic. HotSpot refuses to load the old style agent.dll. | |
2567 } else if (match_option(option, "-Xboundthreads", &tail)) { | |
2568 // Bind user level threads to kernel threads (Solaris only) | |
2569 FLAG_SET_CMDLINE(bool, UseBoundThreads, true); | |
2570 } else if (match_option(option, "-Xloggc:", &tail)) { | |
2571 // Redirect GC output to the file. -Xloggc:<filename> | |
2572 // ostream_init_log(), when called will use this filename | |
2573 // to initialize a fileStream. | |
2574 _gc_log_filename = strdup(tail); | |
2575 FLAG_SET_CMDLINE(bool, PrintGC, true); | |
2576 FLAG_SET_CMDLINE(bool, PrintGCTimeStamps, true); | |
2577 | |
2578 // JNI hooks | |
2579 } else if (match_option(option, "-Xcheck", &tail)) { | |
2580 if (!strcmp(tail, ":jni")) { | |
6854
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|
2581 #if !INCLUDE_JNI_CHECK |
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|
2582 warning("JNI CHECKING is not supported in this VM"); |
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|
2583 #else |
0 | 2584 CheckJNICalls = true; |
6854
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|
2585 #endif // INCLUDE_JNI_CHECK |
0 | 2586 } else if (is_bad_option(option, args->ignoreUnrecognized, |
2587 "check")) { | |
2588 return JNI_EINVAL; | |
2589 } | |
2590 } else if (match_option(option, "vfprintf", &tail)) { | |
2591 _vfprintf_hook = CAST_TO_FN_PTR(vfprintf_hook_t, option->extraInfo); | |
2592 } else if (match_option(option, "exit", &tail)) { | |
2593 _exit_hook = CAST_TO_FN_PTR(exit_hook_t, option->extraInfo); | |
2594 } else if (match_option(option, "abort", &tail)) { | |
2595 _abort_hook = CAST_TO_FN_PTR(abort_hook_t, option->extraInfo); | |
2596 // -XX:+AggressiveHeap | |
2597 } else if (match_option(option, "-XX:+AggressiveHeap", &tail)) { | |
2598 | |
2599 // This option inspects the machine and attempts to set various | |
2600 // parameters to be optimal for long-running, memory allocation | |
2601 // intensive jobs. It is intended for machines with large | |
2602 // amounts of cpu and memory. | |
2603 | |
2604 // initHeapSize is needed since _initial_heap_size is 4 bytes on a 32 bit | |
2605 // VM, but we may not be able to represent the total physical memory | |
2606 // available (like having 8gb of memory on a box but using a 32bit VM). | |
2607 // Thus, we need to make sure we're using a julong for intermediate | |
2608 // calculations. | |
2609 julong initHeapSize; | |
2610 julong total_memory = os::physical_memory(); | |
2611 | |
2612 if (total_memory < (julong)256*M) { | |
2613 jio_fprintf(defaultStream::error_stream(), | |
2614 "You need at least 256mb of memory to use -XX:+AggressiveHeap\n"); | |
2615 vm_exit(1); | |
2616 } | |
2617 | |
2618 // The heap size is half of available memory, or (at most) | |
2619 // all of possible memory less 160mb (leaving room for the OS | |
2620 // when using ISM). This is the maximum; because adaptive sizing | |
2621 // is turned on below, the actual space used may be smaller. | |
2622 | |
2623 initHeapSize = MIN2(total_memory / (julong)2, | |
2624 total_memory - (julong)160*M); | |
2625 | |
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7112912: Message "Error occurred during initialization of VM" on boxes with lots of RAM
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|
2626 initHeapSize = limit_by_allocatable_memory(initHeapSize); |
0 | 2627 |
2628 if (FLAG_IS_DEFAULT(MaxHeapSize)) { | |
2629 FLAG_SET_CMDLINE(uintx, MaxHeapSize, initHeapSize); | |
1064 | 2630 FLAG_SET_CMDLINE(uintx, InitialHeapSize, initHeapSize); |
0 | 2631 // Currently the minimum size and the initial heap sizes are the same. |
1064 | 2632 set_min_heap_size(initHeapSize); |
0 | 2633 } |
2634 if (FLAG_IS_DEFAULT(NewSize)) { | |
2635 // Make the young generation 3/8ths of the total heap. | |
2636 FLAG_SET_CMDLINE(uintx, NewSize, | |
2637 ((julong)MaxHeapSize / (julong)8) * (julong)3); | |
2638 FLAG_SET_CMDLINE(uintx, MaxNewSize, NewSize); | |
2639 } | |
2640 | |
6917
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diff
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|
2641 #ifndef _ALLBSD_SOURCE // UseLargePages is not yet supported on BSD. |
0 | 2642 FLAG_SET_DEFAULT(UseLargePages, true); |
6917
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|
2643 #endif |
0 | 2644 |
2645 // Increase some data structure sizes for efficiency | |
2646 FLAG_SET_CMDLINE(uintx, BaseFootPrintEstimate, MaxHeapSize); | |
2647 FLAG_SET_CMDLINE(bool, ResizeTLAB, false); | |
2648 FLAG_SET_CMDLINE(uintx, TLABSize, 256*K); | |
2649 | |
2650 // See the OldPLABSize comment below, but replace 'after promotion' | |
2651 // with 'after copying'. YoungPLABSize is the size of the survivor | |
2652 // space per-gc-thread buffers. The default is 4kw. | |
2653 FLAG_SET_CMDLINE(uintx, YoungPLABSize, 256*K); // Note: this is in words | |
2654 | |
2655 // OldPLABSize is the size of the buffers in the old gen that | |
2656 // UseParallelGC uses to promote live data that doesn't fit in the | |
2657 // survivor spaces. At any given time, there's one for each gc thread. | |
2658 // The default size is 1kw. These buffers are rarely used, since the | |
2659 // survivor spaces are usually big enough. For specjbb, however, there | |
2660 // are occasions when there's lots of live data in the young gen | |
2661 // and we end up promoting some of it. We don't have a definite | |
2662 // explanation for why bumping OldPLABSize helps, but the theory | |
2663 // is that a bigger PLAB results in retaining something like the | |
2664 // original allocation order after promotion, which improves mutator | |
2665 // locality. A minor effect may be that larger PLABs reduce the | |
2666 // number of PLAB allocation events during gc. The value of 8kw | |
2667 // was arrived at by experimenting with specjbb. | |
2668 FLAG_SET_CMDLINE(uintx, OldPLABSize, 8*K); // Note: this is in words | |
2669 | |
2670 // Enable parallel GC and adaptive generation sizing | |
2671 FLAG_SET_CMDLINE(bool, UseParallelGC, true); | |
10
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diff
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|
2672 FLAG_SET_DEFAULT(ParallelGCThreads, |
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diff
changeset
|
2673 Abstract_VM_Version::parallel_worker_threads()); |
0 | 2674 |
2675 // Encourage steady state memory management | |
2676 FLAG_SET_CMDLINE(uintx, ThresholdTolerance, 100); | |
2677 | |
2678 // This appears to improve mutator locality | |
2679 FLAG_SET_CMDLINE(bool, ScavengeBeforeFullGC, false); | |
2680 | |
2681 // Get around early Solaris scheduling bug | |
2682 // (affinity vs other jobs on system) | |
2683 // but disallow DR and offlining (5008695). | |
2684 FLAG_SET_CMDLINE(bool, BindGCTaskThreadsToCPUs, true); | |
2685 | |
2686 } else if (match_option(option, "-XX:+NeverTenure", &tail)) { | |
2687 // The last option must always win. | |
2688 FLAG_SET_CMDLINE(bool, AlwaysTenure, false); | |
2689 FLAG_SET_CMDLINE(bool, NeverTenure, true); | |
2690 } else if (match_option(option, "-XX:+AlwaysTenure", &tail)) { | |
2691 // The last option must always win. | |
2692 FLAG_SET_CMDLINE(bool, NeverTenure, false); | |
2693 FLAG_SET_CMDLINE(bool, AlwaysTenure, true); | |
2694 } else if (match_option(option, "-XX:+CMSPermGenSweepingEnabled", &tail) || | |
2695 match_option(option, "-XX:-CMSPermGenSweepingEnabled", &tail)) { | |
2696 jio_fprintf(defaultStream::error_stream(), | |
2697 "Please use CMSClassUnloadingEnabled in place of " | |
2698 "CMSPermGenSweepingEnabled in the future\n"); | |
2699 } else if (match_option(option, "-XX:+UseGCTimeLimit", &tail)) { | |
2700 FLAG_SET_CMDLINE(bool, UseGCOverheadLimit, true); | |
2701 jio_fprintf(defaultStream::error_stream(), | |
2702 "Please use -XX:+UseGCOverheadLimit in place of " | |
2703 "-XX:+UseGCTimeLimit in the future\n"); | |
2704 } else if (match_option(option, "-XX:-UseGCTimeLimit", &tail)) { | |
2705 FLAG_SET_CMDLINE(bool, UseGCOverheadLimit, false); | |
2706 jio_fprintf(defaultStream::error_stream(), | |
2707 "Please use -XX:-UseGCOverheadLimit in place of " | |
2708 "-XX:-UseGCTimeLimit in the future\n"); | |
2709 // The TLE options are for compatibility with 1.3 and will be | |
2710 // removed without notice in a future release. These options | |
2711 // are not to be documented. | |
2712 } else if (match_option(option, "-XX:MaxTLERatio=", &tail)) { | |
2713 // No longer used. | |
2714 } else if (match_option(option, "-XX:+ResizeTLE", &tail)) { | |
2715 FLAG_SET_CMDLINE(bool, ResizeTLAB, true); | |
2716 } else if (match_option(option, "-XX:-ResizeTLE", &tail)) { | |
2717 FLAG_SET_CMDLINE(bool, ResizeTLAB, false); | |
2718 } else if (match_option(option, "-XX:+PrintTLE", &tail)) { | |
2719 FLAG_SET_CMDLINE(bool, PrintTLAB, true); | |
2720 } else if (match_option(option, "-XX:-PrintTLE", &tail)) { | |
2721 FLAG_SET_CMDLINE(bool, PrintTLAB, false); | |
2722 } else if (match_option(option, "-XX:TLEFragmentationRatio=", &tail)) { | |
2723 // No longer used. | |
2724 } else if (match_option(option, "-XX:TLESize=", &tail)) { | |
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diff
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|
2725 julong long_tlab_size = 0; |
0 | 2726 ArgsRange errcode = parse_memory_size(tail, &long_tlab_size, 1); |
2727 if (errcode != arg_in_range) { | |
2728 jio_fprintf(defaultStream::error_stream(), | |
2729 "Invalid TLAB size: %s\n", option->optionString); | |
2730 describe_range_error(errcode); | |
2731 return JNI_EINVAL; | |
2732 } | |
2733 FLAG_SET_CMDLINE(uintx, TLABSize, long_tlab_size); | |
2734 } else if (match_option(option, "-XX:TLEThreadRatio=", &tail)) { | |
2735 // No longer used. | |
2736 } else if (match_option(option, "-XX:+UseTLE", &tail)) { | |
2737 FLAG_SET_CMDLINE(bool, UseTLAB, true); | |
2738 } else if (match_option(option, "-XX:-UseTLE", &tail)) { | |
2739 FLAG_SET_CMDLINE(bool, UseTLAB, false); | |
2740 SOLARIS_ONLY( | |
2741 } else if (match_option(option, "-XX:+UsePermISM", &tail)) { | |
2742 warning("-XX:+UsePermISM is obsolete."); | |
2743 FLAG_SET_CMDLINE(bool, UseISM, true); | |
2744 } else if (match_option(option, "-XX:-UsePermISM", &tail)) { | |
2745 FLAG_SET_CMDLINE(bool, UseISM, false); | |
2746 ) | |
2747 } else if (match_option(option, "-XX:+DisplayVMOutputToStderr", &tail)) { | |
2748 FLAG_SET_CMDLINE(bool, DisplayVMOutputToStdout, false); | |
2749 FLAG_SET_CMDLINE(bool, DisplayVMOutputToStderr, true); | |
2750 } else if (match_option(option, "-XX:+DisplayVMOutputToStdout", &tail)) { | |
2751 FLAG_SET_CMDLINE(bool, DisplayVMOutputToStderr, false); | |
2752 FLAG_SET_CMDLINE(bool, DisplayVMOutputToStdout, true); | |
2753 } else if (match_option(option, "-XX:+ExtendedDTraceProbes", &tail)) { | |
4006 | 2754 #if defined(DTRACE_ENABLED) |
0 | 2755 FLAG_SET_CMDLINE(bool, ExtendedDTraceProbes, true); |
2756 FLAG_SET_CMDLINE(bool, DTraceMethodProbes, true); | |
2757 FLAG_SET_CMDLINE(bool, DTraceAllocProbes, true); | |
2758 FLAG_SET_CMDLINE(bool, DTraceMonitorProbes, true); | |
4006 | 2759 #else // defined(DTRACE_ENABLED) |
0 | 2760 jio_fprintf(defaultStream::error_stream(), |
4006 | 2761 "ExtendedDTraceProbes flag is not applicable for this configuration\n"); |
0 | 2762 return JNI_EINVAL; |
4006 | 2763 #endif // defined(DTRACE_ENABLED) |
0 | 2764 #ifdef ASSERT |
1145
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6631166: CMS: better heuristics when combatting fragmentation
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1074
diff
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|
2765 } else if (match_option(option, "-XX:+FullGCALot", &tail)) { |
0 | 2766 FLAG_SET_CMDLINE(bool, FullGCALot, true); |
2767 // disable scavenge before parallel mark-compact | |
2768 FLAG_SET_CMDLINE(bool, ScavengeBeforeFullGC, false); | |
2769 #endif | |
1145
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|
2770 } else if (match_option(option, "-XX:CMSParPromoteBlocksToClaim=", &tail)) { |
0 | 2771 julong cms_blocks_to_claim = (julong)atol(tail); |
2772 FLAG_SET_CMDLINE(uintx, CMSParPromoteBlocksToClaim, cms_blocks_to_claim); | |
2773 jio_fprintf(defaultStream::error_stream(), | |
1145
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|
2774 "Please use -XX:OldPLABSize in place of " |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
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|
2775 "-XX:CMSParPromoteBlocksToClaim in the future\n"); |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
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diff
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|
2776 } else if (match_option(option, "-XX:ParCMSPromoteBlocksToClaim=", &tail)) { |
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|
2777 julong cms_blocks_to_claim = (julong)atol(tail); |
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|
2778 FLAG_SET_CMDLINE(uintx, CMSParPromoteBlocksToClaim, cms_blocks_to_claim); |
e018e6884bd8
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|
2779 jio_fprintf(defaultStream::error_stream(), |
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|
2780 "Please use -XX:OldPLABSize in place of " |
0 | 2781 "-XX:ParCMSPromoteBlocksToClaim in the future\n"); |
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|
2782 } else if (match_option(option, "-XX:ParallelGCOldGenAllocBufferSize=", &tail)) { |
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2783 julong old_plab_size = 0; |
0 | 2784 ArgsRange errcode = parse_memory_size(tail, &old_plab_size, 1); |
2785 if (errcode != arg_in_range) { | |
2786 jio_fprintf(defaultStream::error_stream(), | |
2787 "Invalid old PLAB size: %s\n", option->optionString); | |
2788 describe_range_error(errcode); | |
2789 return JNI_EINVAL; | |
2790 } | |
489
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|
2791 FLAG_SET_CMDLINE(uintx, OldPLABSize, old_plab_size); |
0 | 2792 jio_fprintf(defaultStream::error_stream(), |
2793 "Please use -XX:OldPLABSize in place of " | |
2794 "-XX:ParallelGCOldGenAllocBufferSize in the future\n"); | |
1145
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|
2795 } else if (match_option(option, "-XX:ParallelGCToSpaceAllocBufferSize=", &tail)) { |
489
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2796 julong young_plab_size = 0; |
0 | 2797 ArgsRange errcode = parse_memory_size(tail, &young_plab_size, 1); |
2798 if (errcode != arg_in_range) { | |
2799 jio_fprintf(defaultStream::error_stream(), | |
2800 "Invalid young PLAB size: %s\n", option->optionString); | |
2801 describe_range_error(errcode); | |
2802 return JNI_EINVAL; | |
2803 } | |
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|
2804 FLAG_SET_CMDLINE(uintx, YoungPLABSize, young_plab_size); |
0 | 2805 jio_fprintf(defaultStream::error_stream(), |
2806 "Please use -XX:YoungPLABSize in place of " | |
2807 "-XX:ParallelGCToSpaceAllocBufferSize in the future\n"); | |
1284 | 2808 } else if (match_option(option, "-XX:CMSMarkStackSize=", &tail) || |
2809 match_option(option, "-XX:G1MarkStackSize=", &tail)) { | |
2810 julong stack_size = 0; | |
2811 ArgsRange errcode = parse_memory_size(tail, &stack_size, 1); | |
2812 if (errcode != arg_in_range) { | |
2813 jio_fprintf(defaultStream::error_stream(), | |
2814 "Invalid mark stack size: %s\n", option->optionString); | |
2815 describe_range_error(errcode); | |
2816 return JNI_EINVAL; | |
2817 } | |
2818 FLAG_SET_CMDLINE(uintx, MarkStackSize, stack_size); | |
2819 } else if (match_option(option, "-XX:CMSMarkStackSizeMax=", &tail)) { | |
2820 julong max_stack_size = 0; | |
2821 ArgsRange errcode = parse_memory_size(tail, &max_stack_size, 1); | |
2822 if (errcode != arg_in_range) { | |
2823 jio_fprintf(defaultStream::error_stream(), | |
2824 "Invalid maximum mark stack size: %s\n", | |
2825 option->optionString); | |
2826 describe_range_error(errcode); | |
2827 return JNI_EINVAL; | |
2828 } | |
2829 FLAG_SET_CMDLINE(uintx, MarkStackSizeMax, max_stack_size); | |
2830 } else if (match_option(option, "-XX:ParallelMarkingThreads=", &tail) || | |
2831 match_option(option, "-XX:ParallelCMSThreads=", &tail)) { | |
2832 uintx conc_threads = 0; | |
2833 if (!parse_uintx(tail, &conc_threads, 1)) { | |
2834 jio_fprintf(defaultStream::error_stream(), | |
2835 "Invalid concurrent threads: %s\n", option->optionString); | |
2836 return JNI_EINVAL; | |
2837 } | |
2838 FLAG_SET_CMDLINE(uintx, ConcGCThreads, conc_threads); | |
6199
3f1ab0c19c30
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6198
diff
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|
2839 } else if (match_option(option, "-XX:MaxDirectMemorySize=", &tail)) { |
3f1ab0c19c30
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dholmes
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changeset
|
2840 julong max_direct_memory_size = 0; |
3f1ab0c19c30
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dholmes
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6198
diff
changeset
|
2841 ArgsRange errcode = parse_memory_size(tail, &max_direct_memory_size, 0); |
3f1ab0c19c30
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dholmes
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diff
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|
2842 if (errcode != arg_in_range) { |
3f1ab0c19c30
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6198
diff
changeset
|
2843 jio_fprintf(defaultStream::error_stream(), |
3f1ab0c19c30
7179383: MaxDirectMemorySize argument parsing is broken for values >2G
dholmes
parents:
6198
diff
changeset
|
2844 "Invalid maximum direct memory size: %s\n", |
3f1ab0c19c30
7179383: MaxDirectMemorySize argument parsing is broken for values >2G
dholmes
parents:
6198
diff
changeset
|
2845 option->optionString); |
3f1ab0c19c30
7179383: MaxDirectMemorySize argument parsing is broken for values >2G
dholmes
parents:
6198
diff
changeset
|
2846 describe_range_error(errcode); |
3f1ab0c19c30
7179383: MaxDirectMemorySize argument parsing is broken for values >2G
dholmes
parents:
6198
diff
changeset
|
2847 return JNI_EINVAL; |
3f1ab0c19c30
7179383: MaxDirectMemorySize argument parsing is broken for values >2G
dholmes
parents:
6198
diff
changeset
|
2848 } |
3f1ab0c19c30
7179383: MaxDirectMemorySize argument parsing is broken for values >2G
dholmes
parents:
6198
diff
changeset
|
2849 FLAG_SET_CMDLINE(uintx, MaxDirectMemorySize, max_direct_memory_size); |
6878
85916677fc22
7188233: UseVMInterruptibleIO flag deprecate for JDK8
coleenp
parents:
6857
diff
changeset
|
2850 } else if (match_option(option, "-XX:+UseVMInterruptibleIO", &tail)) { |
85916677fc22
7188233: UseVMInterruptibleIO flag deprecate for JDK8
coleenp
parents:
6857
diff
changeset
|
2851 // NOTE! In JDK 9, the UseVMInterruptibleIO flag will completely go |
85916677fc22
7188233: UseVMInterruptibleIO flag deprecate for JDK8
coleenp
parents:
6857
diff
changeset
|
2852 // away and will cause VM initialization failures! |
85916677fc22
7188233: UseVMInterruptibleIO flag deprecate for JDK8
coleenp
parents:
6857
diff
changeset
|
2853 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
|
2854 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
|
2855 #if !INCLUDE_MANAGEMENT |
579f6adb7f51
8003539: Minimal VM don't react to -Dcom.sun.management and -XX:+ManagementServer
jprovino
parents:
8002
diff
changeset
|
2856 } else if (match_option(option, "-XX:+ManagementServer", &tail)) { |
8720
fad90b102190
8008310: Some adjustments needed to minimal VM warnings and errors for unsupported command line options
jprovino
parents:
8105
diff
changeset
|
2857 jio_fprintf(defaultStream::error_stream(), |
fad90b102190
8008310: Some adjustments needed to minimal VM warnings and errors for unsupported command line options
jprovino
parents:
8105
diff
changeset
|
2858 "ManagementServer is not supported in this VM.\n"); |
fad90b102190
8008310: Some adjustments needed to minimal VM warnings and errors for unsupported command line options
jprovino
parents:
8105
diff
changeset
|
2859 return JNI_ERR; |
8081
579f6adb7f51
8003539: Minimal VM don't react to -Dcom.sun.management and -XX:+ManagementServer
jprovino
parents:
8002
diff
changeset
|
2860 #endif // INCLUDE_MANAGEMENT |
1145
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1074
diff
changeset
|
2861 } else if (match_option(option, "-XX:", &tail)) { // -XX:xxxx |
0 | 2862 // Skip -XX:Flags= since that case has already been handled |
2863 if (strncmp(tail, "Flags=", strlen("Flags=")) != 0) { | |
2864 if (!process_argument(tail, args->ignoreUnrecognized, origin)) { | |
2865 return JNI_EINVAL; | |
2866 } | |
2867 } | |
2868 // Unknown option | |
2869 } else if (is_bad_option(option, args->ignoreUnrecognized)) { | |
2870 return JNI_ERR; | |
2871 } | |
2872 } | |
3767
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3349
diff
changeset
|
2873 |
449
171e581e8161
6554406: Change switch UseVMInterruptibleIO default to false (sol)
xlu
parents:
420
diff
changeset
|
2874 // 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
|
2875 // when working with older JDKs. |
1679
3d90023429ec
6888526: Linux getCurrentThreadCpuTime is drastically slower than Windows
aph
parents:
1628
diff
changeset
|
2876 #ifdef LINUX |
3d90023429ec
6888526: Linux getCurrentThreadCpuTime is drastically slower than Windows
aph
parents:
1628
diff
changeset
|
2877 if (JDK_Version::current().compare_major(6) <= 0 && |
3d90023429ec
6888526: Linux getCurrentThreadCpuTime is drastically slower than Windows
aph
parents:
1628
diff
changeset
|
2878 FLAG_IS_DEFAULT(UseLinuxPosixThreadCPUClocks)) { |
3d90023429ec
6888526: Linux getCurrentThreadCpuTime is drastically slower than Windows
aph
parents:
1628
diff
changeset
|
2879 FLAG_SET_DEFAULT(UseLinuxPosixThreadCPUClocks, false); |
3d90023429ec
6888526: Linux getCurrentThreadCpuTime is drastically slower than Windows
aph
parents:
1628
diff
changeset
|
2880 } |
3d90023429ec
6888526: Linux getCurrentThreadCpuTime is drastically slower than Windows
aph
parents:
1628
diff
changeset
|
2881 #endif // LINUX |
0 | 2882 return JNI_OK; |
2883 } | |
2884 | |
2885 jint Arguments::finalize_vm_init_args(SysClassPath* scp_p, bool scp_assembly_required) { | |
2886 // This must be done after all -D arguments have been processed. | |
2887 scp_p->expand_endorsed(); | |
2888 | |
2889 if (scp_assembly_required || scp_p->get_endorsed() != NULL) { | |
2890 // Assemble the bootclasspath elements into the final path. | |
2891 Arguments::set_sysclasspath(scp_p->combined_path()); | |
2892 } | |
2893 | |
2894 // This must be done after all arguments have been processed. | |
2895 // java_compiler() true means set to "NONE" or empty. | |
2896 if (java_compiler() && !xdebug_mode()) { | |
2897 // For backwards compatibility, we switch to interpreted mode if | |
2898 // -Djava.compiler="NONE" or "" is specified AND "-Xdebug" was | |
2899 // not specified. | |
2900 set_mode_flags(_int); | |
2901 } | |
2902 if (CompileThreshold == 0) { | |
2903 set_mode_flags(_int); | |
2904 } | |
2905 | |
2906 #ifndef COMPILER2 | |
2907 // Don't degrade server performance for footprint | |
2908 if (FLAG_IS_DEFAULT(UseLargePages) && | |
2909 MaxHeapSize < LargePageHeapSizeThreshold) { | |
2910 // No need for large granularity pages w/small heaps. | |
2911 // Note that large pages are enabled/disabled for both the | |
2912 // Java heap and the code cache. | |
2913 FLAG_SET_DEFAULT(UseLargePages, false); | |
2914 SOLARIS_ONLY(FLAG_SET_DEFAULT(UseMPSS, false)); | |
2915 SOLARIS_ONLY(FLAG_SET_DEFAULT(UseISM, false)); | |
2916 } | |
342
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
135
diff
changeset
|
2917 |
1251
576e77447e3c
6923002: assert(false,"this call site should not be polymorphic")
kvn
parents:
1188
diff
changeset
|
2918 // Tiered compilation is undefined with C1. |
576e77447e3c
6923002: assert(false,"this call site should not be polymorphic")
kvn
parents:
1188
diff
changeset
|
2919 TieredCompilation = false; |
0 | 2920 #else |
2921 if (!FLAG_IS_DEFAULT(OptoLoopAlignment) && FLAG_IS_DEFAULT(MaxLoopPad)) { | |
2922 FLAG_SET_DEFAULT(MaxLoopPad, OptoLoopAlignment-1); | |
2923 } | |
2924 #endif | |
2925 | |
1681
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2926 // 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
|
2927 // to be true unless the property has already been set. |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2928 // 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
|
2929 if (os::is_headless_jre()) { |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2930 const char* headless = Arguments::get_property("java.awt.headless"); |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2931 if (headless == NULL) { |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2932 char envbuffer[128]; |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2933 if (!os::getenv("JAVA_AWT_HEADLESS", envbuffer, sizeof(envbuffer))) { |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2934 if (!add_property("java.awt.headless=true")) { |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2935 return JNI_ENOMEM; |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2936 } |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2937 } else { |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2938 char buffer[256]; |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2939 strcpy(buffer, "java.awt.headless="); |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2940 strcat(buffer, envbuffer); |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2941 if (!add_property(buffer)) { |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2942 return JNI_ENOMEM; |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2943 } |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2944 } |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2945 } |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2946 } |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2947 |
0 | 2948 if (!check_vm_args_consistency()) { |
2949 return JNI_ERR; | |
2950 } | |
2951 | |
2952 return JNI_OK; | |
2953 } | |
2954 | |
2955 jint Arguments::parse_java_options_environment_variable(SysClassPath* scp_p, bool* scp_assembly_required_p) { | |
2956 return parse_options_environment_variable("_JAVA_OPTIONS", scp_p, | |
2957 scp_assembly_required_p); | |
2958 } | |
2959 | |
2960 jint Arguments::parse_java_tool_options_environment_variable(SysClassPath* scp_p, bool* scp_assembly_required_p) { | |
2961 return parse_options_environment_variable("JAVA_TOOL_OPTIONS", scp_p, | |
2962 scp_assembly_required_p); | |
2963 } | |
2964 | |
2965 jint Arguments::parse_options_environment_variable(const char* name, SysClassPath* scp_p, bool* scp_assembly_required_p) { | |
2966 const int N_MAX_OPTIONS = 64; | |
2967 const int OPTION_BUFFER_SIZE = 1024; | |
2968 char buffer[OPTION_BUFFER_SIZE]; | |
2969 | |
2970 // The variable will be ignored if it exceeds the length of the buffer. | |
2971 // Don't check this variable if user has special privileges | |
2972 // (e.g. unix su command). | |
2973 if (os::getenv(name, buffer, sizeof(buffer)) && | |
2974 !os::have_special_privileges()) { | |
2975 JavaVMOption options[N_MAX_OPTIONS]; // Construct option array | |
2976 jio_fprintf(defaultStream::error_stream(), | |
2977 "Picked up %s: %s\n", name, buffer); | |
2978 char* rd = buffer; // pointer to the input string (rd) | |
2979 int i; | |
2980 for (i = 0; i < N_MAX_OPTIONS;) { // repeat for all options in the input string | |
2981 while (isspace(*rd)) rd++; // skip whitespace | |
2982 if (*rd == 0) break; // we re done when the input string is read completely | |
2983 | |
2984 // The output, option string, overwrites the input string. | |
2985 // Because of quoting, the pointer to the option string (wrt) may lag the pointer to | |
2986 // input string (rd). | |
2987 char* wrt = rd; | |
2988 | |
2989 options[i++].optionString = wrt; // Fill in option | |
2990 while (*rd != 0 && !isspace(*rd)) { // unquoted strings terminate with a space or NULL | |
2991 if (*rd == '\'' || *rd == '"') { // handle a quoted string | |
2992 int quote = *rd; // matching quote to look for | |
2993 rd++; // don't copy open quote | |
2994 while (*rd != quote) { // include everything (even spaces) up until quote | |
2995 if (*rd == 0) { // string termination means unmatched string | |
2996 jio_fprintf(defaultStream::error_stream(), | |
2997 "Unmatched quote in %s\n", name); | |
2998 return JNI_ERR; | |
2999 } | |
3000 *wrt++ = *rd++; // copy to option string | |
3001 } | |
3002 rd++; // don't copy close quote | |
3003 } else { | |
3004 *wrt++ = *rd++; // copy to option string | |
3005 } | |
3006 } | |
3007 // Need to check if we're done before writing a NULL, | |
3008 // because the write could be to the byte that rd is pointing to. | |
3009 if (*rd++ == 0) { | |
3010 *wrt = 0; | |
3011 break; | |
3012 } | |
3013 *wrt = 0; // Zero terminate option | |
3014 } | |
3015 // Construct JavaVMInitArgs structure and parse as if it was part of the command line | |
3016 JavaVMInitArgs vm_args; | |
3017 vm_args.version = JNI_VERSION_1_2; | |
3018 vm_args.options = options; | |
3019 vm_args.nOptions = i; | |
564 | 3020 vm_args.ignoreUnrecognized = IgnoreUnrecognizedVMOptions; |
0 | 3021 |
3022 if (PrintVMOptions) { | |
3023 const char* tail; | |
3024 for (int i = 0; i < vm_args.nOptions; i++) { | |
3025 const JavaVMOption *option = vm_args.options + i; | |
3026 if (match_option(option, "-XX:", &tail)) { | |
3027 logOption(tail); | |
3028 } | |
3029 } | |
3030 } | |
3031 | |
3032 return(parse_each_vm_init_arg(&vm_args, scp_p, scp_assembly_required_p, ENVIRON_VAR)); | |
3033 } | |
3034 return JNI_OK; | |
3035 } | |
3036 | |
2362
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
3037 void Arguments::set_shared_spaces_flags() { |
2378 | 3038 const bool must_share = DumpSharedSpaces || RequireSharedSpaces; |
3039 const bool might_share = must_share || UseSharedSpaces; | |
3040 | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6628
diff
changeset
|
3041 // CompressedOops cannot be used with CDS. The offsets of oopmaps and |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6628
diff
changeset
|
3042 // static fields are incorrect in the archive. With some more clever |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6628
diff
changeset
|
3043 // initialization, this restriction can probably be lifted. |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6628
diff
changeset
|
3044 // ??? UseLargePages might be okay now |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6628
diff
changeset
|
3045 const bool cannot_share = UseCompressedOops || |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6628
diff
changeset
|
3046 (UseLargePages && FLAG_IS_CMDLINE(UseLargePages)); |
2362
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
3047 if (cannot_share) { |
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
3048 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
|
3049 warning("disabling large pages %s" |
2378 | 3050 "because of %s", "" LP64_ONLY("and compressed oops "), |
3051 DumpSharedSpaces ? "-Xshare:dump" : "-Xshare:on"); | |
3052 FLAG_SET_CMDLINE(bool, UseLargePages, false); | |
3053 LP64_ONLY(FLAG_SET_CMDLINE(bool, UseCompressedOops, false)); | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6628
diff
changeset
|
3054 LP64_ONLY(FLAG_SET_CMDLINE(bool, UseCompressedKlassPointers, false)); |
2362
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
3055 } else { |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6628
diff
changeset
|
3056 // Prefer compressed oops and large pages to class data sharing |
2362
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
3057 if (UseSharedSpaces && Verbose) { |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6628
diff
changeset
|
3058 warning("turning off use of shared archive because of large pages%s", |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6628
diff
changeset
|
3059 "" LP64_ONLY(" and/or compressed oops")); |
2362
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
3060 } |
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
3061 no_shared_spaces(); |
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
3062 } |
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
3063 } else if (UseLargePages && might_share) { |
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
3064 // Disable large pages to allow shared spaces. This is sub-optimal, since |
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
3065 // there may not even be a shared archive to use. |
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
3066 FLAG_SET_DEFAULT(UseLargePages, false); |
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
3067 } |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6628
diff
changeset
|
3068 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6628
diff
changeset
|
3069 if (DumpSharedSpaces) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6628
diff
changeset
|
3070 if (RequireSharedSpaces) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6628
diff
changeset
|
3071 warning("cannot dump shared archive while using shared archive"); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6628
diff
changeset
|
3072 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6628
diff
changeset
|
3073 UseSharedSpaces = false; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6628
diff
changeset
|
3074 } |
2362
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
3075 } |
1891
9de67bf4244d
6996136: VM crash in src/share/vm/runtime/virtualspace.cpp:424
iveresov
parents:
1890
diff
changeset
|
3076 |
3797
eb94b7226b7a
7061192: option handling adjustments for oracle and embedded builds
jcoomes
parents:
3769
diff
changeset
|
3077 // 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
|
3078 // were explicitly requested on the command-line |
eb94b7226b7a
7061192: option handling adjustments for oracle and embedded builds
jcoomes
parents:
3769
diff
changeset
|
3079 #define UNSUPPORTED_OPTION(opt, description) \ |
eb94b7226b7a
7061192: option handling adjustments for oracle and embedded builds
jcoomes
parents:
3769
diff
changeset
|
3080 do { \ |
eb94b7226b7a
7061192: option handling adjustments for oracle and embedded builds
jcoomes
parents:
3769
diff
changeset
|
3081 if (opt) { \ |
eb94b7226b7a
7061192: option handling adjustments for oracle and embedded builds
jcoomes
parents:
3769
diff
changeset
|
3082 if (FLAG_IS_CMDLINE(opt)) { \ |
eb94b7226b7a
7061192: option handling adjustments for oracle and embedded builds
jcoomes
parents:
3769
diff
changeset
|
3083 warning(description " is disabled in this release."); \ |
eb94b7226b7a
7061192: option handling adjustments for oracle and embedded builds
jcoomes
parents:
3769
diff
changeset
|
3084 } \ |
eb94b7226b7a
7061192: option handling adjustments for oracle and embedded builds
jcoomes
parents:
3769
diff
changeset
|
3085 FLAG_SET_DEFAULT(opt, false); \ |
eb94b7226b7a
7061192: option handling adjustments for oracle and embedded builds
jcoomes
parents:
3769
diff
changeset
|
3086 } \ |
eb94b7226b7a
7061192: option handling adjustments for oracle and embedded builds
jcoomes
parents:
3769
diff
changeset
|
3087 } while(0) |
eb94b7226b7a
7061192: option handling adjustments for oracle and embedded builds
jcoomes
parents:
3769
diff
changeset
|
3088 |
8086
1605eef8e11e
8003581: UseG1GC is not properly accounted for by INCLUDE_ALTERNATE_GCS
jprovino
parents:
8083
diff
changeset
|
3089 |
1605eef8e11e
8003581: UseG1GC is not properly accounted for by INCLUDE_ALTERNATE_GCS
jprovino
parents:
8083
diff
changeset
|
3090 #define UNSUPPORTED_GC_OPTION(gc) \ |
1605eef8e11e
8003581: UseG1GC is not properly accounted for by INCLUDE_ALTERNATE_GCS
jprovino
parents:
8083
diff
changeset
|
3091 do { \ |
1605eef8e11e
8003581: UseG1GC is not properly accounted for by INCLUDE_ALTERNATE_GCS
jprovino
parents:
8083
diff
changeset
|
3092 if (gc) { \ |
1605eef8e11e
8003581: UseG1GC is not properly accounted for by INCLUDE_ALTERNATE_GCS
jprovino
parents:
8083
diff
changeset
|
3093 if (FLAG_IS_CMDLINE(gc)) { \ |
1605eef8e11e
8003581: UseG1GC is not properly accounted for by INCLUDE_ALTERNATE_GCS
jprovino
parents:
8083
diff
changeset
|
3094 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
|
3095 } \ |
1605eef8e11e
8003581: UseG1GC is not properly accounted for by INCLUDE_ALTERNATE_GCS
jprovino
parents:
8083
diff
changeset
|
3096 FLAG_SET_DEFAULT(gc, false); \ |
1605eef8e11e
8003581: UseG1GC is not properly accounted for by INCLUDE_ALTERNATE_GCS
jprovino
parents:
8083
diff
changeset
|
3097 } \ |
1605eef8e11e
8003581: UseG1GC is not properly accounted for by INCLUDE_ALTERNATE_GCS
jprovino
parents:
8083
diff
changeset
|
3098 } while(0) |
1605eef8e11e
8003581: UseG1GC is not properly accounted for by INCLUDE_ALTERNATE_GCS
jprovino
parents:
8083
diff
changeset
|
3099 |
9060
cc32ccaaf47f
8003310: Enable -Wunused-function when compiling with gcc
mikael
parents:
8847
diff
changeset
|
3100 #if !INCLUDE_ALL_GCS |
8086
1605eef8e11e
8003581: UseG1GC is not properly accounted for by INCLUDE_ALTERNATE_GCS
jprovino
parents:
8083
diff
changeset
|
3101 static void force_serial_gc() { |
1605eef8e11e
8003581: UseG1GC is not properly accounted for by INCLUDE_ALTERNATE_GCS
jprovino
parents:
8083
diff
changeset
|
3102 FLAG_SET_DEFAULT(UseSerialGC, true); |
1605eef8e11e
8003581: UseG1GC is not properly accounted for by INCLUDE_ALTERNATE_GCS
jprovino
parents:
8083
diff
changeset
|
3103 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
|
3104 UNSUPPORTED_GC_OPTION(UseG1GC); |
1605eef8e11e
8003581: UseG1GC is not properly accounted for by INCLUDE_ALTERNATE_GCS
jprovino
parents:
8083
diff
changeset
|
3105 UNSUPPORTED_GC_OPTION(UseParallelGC); |
1605eef8e11e
8003581: UseG1GC is not properly accounted for by INCLUDE_ALTERNATE_GCS
jprovino
parents:
8083
diff
changeset
|
3106 UNSUPPORTED_GC_OPTION(UseParallelOldGC); |
1605eef8e11e
8003581: UseG1GC is not properly accounted for by INCLUDE_ALTERNATE_GCS
jprovino
parents:
8083
diff
changeset
|
3107 UNSUPPORTED_GC_OPTION(UseConcMarkSweepGC); |
1605eef8e11e
8003581: UseG1GC is not properly accounted for by INCLUDE_ALTERNATE_GCS
jprovino
parents:
8083
diff
changeset
|
3108 UNSUPPORTED_GC_OPTION(UseParNewGC); |
1605eef8e11e
8003581: UseG1GC is not properly accounted for by INCLUDE_ALTERNATE_GCS
jprovino
parents:
8083
diff
changeset
|
3109 } |
9060
cc32ccaaf47f
8003310: Enable -Wunused-function when compiling with gcc
mikael
parents:
8847
diff
changeset
|
3110 #endif // INCLUDE_ALL_GCS |
8086
1605eef8e11e
8003581: UseG1GC is not properly accounted for by INCLUDE_ALTERNATE_GCS
jprovino
parents:
8083
diff
changeset
|
3111 |
0 | 3112 // Parse entry point called from JNI_CreateJavaVM |
3113 | |
3114 jint Arguments::parse(const JavaVMInitArgs* args) { | |
3115 | |
3116 // Sharing support | |
3117 // Construct the path to the archive | |
3118 char jvm_path[JVM_MAXPATHLEN]; | |
3119 os::jvm_path(jvm_path, sizeof(jvm_path)); | |
3120 char *end = strrchr(jvm_path, *os::file_separator()); | |
3121 if (end != NULL) *end = '\0'; | |
3122 char *shared_archive_path = NEW_C_HEAP_ARRAY(char, strlen(jvm_path) + | |
6197 | 3123 strlen(os::file_separator()) + 20, mtInternal); |
0 | 3124 if (shared_archive_path == NULL) return JNI_ENOMEM; |
3125 strcpy(shared_archive_path, jvm_path); | |
3126 strcat(shared_archive_path, os::file_separator()); | |
3127 strcat(shared_archive_path, "classes"); | |
3128 strcat(shared_archive_path, ".jsa"); | |
3129 SharedArchivePath = shared_archive_path; | |
3130 | |
3131 // Remaining part of option string | |
3132 const char* tail; | |
3133 | |
3134 // 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
|
3135 const char* hotspotrc = ".hotspotrc"; |
0 | 3136 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
|
3137 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
|
3138 |
564 | 3139 const char* flags_file; |
0 | 3140 int index; |
3141 for (index = 0; index < args->nOptions; index++) { | |
3142 const JavaVMOption *option = args->options + index; | |
3143 if (match_option(option, "-XX:Flags=", &tail)) { | |
564 | 3144 flags_file = tail; |
0 | 3145 settings_file_specified = true; |
3146 } | |
3147 if (match_option(option, "-XX:+PrintVMOptions", &tail)) { | |
3148 PrintVMOptions = true; | |
3149 } | |
253
b0fe4deeb9fb
6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.")
kvn
parents:
196
diff
changeset
|
3150 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
|
3151 PrintVMOptions = false; |
b0fe4deeb9fb
6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.")
kvn
parents:
196
diff
changeset
|
3152 } |
564 | 3153 if (match_option(option, "-XX:+IgnoreUnrecognizedVMOptions", &tail)) { |
3154 IgnoreUnrecognizedVMOptions = true; | |
3155 } | |
3156 if (match_option(option, "-XX:-IgnoreUnrecognizedVMOptions", &tail)) { | |
3157 IgnoreUnrecognizedVMOptions = false; | |
3158 } | |
1150 | 3159 if (match_option(option, "-XX:+PrintFlagsInitial", &tail)) { |
4773 | 3160 CommandLineFlags::printFlags(tty, false); |
1150 | 3161 vm_exit(0); |
3162 } | |
6197 | 3163 if (match_option(option, "-XX:NativeMemoryTracking", &tail)) { |
6854
fb19af007ffc
7189254: Change makefiles for more flexibility to override defaults
jprovino
parents:
6818
diff
changeset
|
3164 #if INCLUDE_NMT |
6197 | 3165 MemTracker::init_tracking_options(tail); |
6854
fb19af007ffc
7189254: Change makefiles for more flexibility to override defaults
jprovino
parents:
6818
diff
changeset
|
3166 #else |
8720
fad90b102190
8008310: Some adjustments needed to minimal VM warnings and errors for unsupported command line options
jprovino
parents:
8105
diff
changeset
|
3167 jio_fprintf(defaultStream::error_stream(), |
fad90b102190
8008310: Some adjustments needed to minimal VM warnings and errors for unsupported command line options
jprovino
parents:
8105
diff
changeset
|
3168 "Native Memory Tracking is not supported in this VM\n"); |
fad90b102190
8008310: Some adjustments needed to minimal VM warnings and errors for unsupported command line options
jprovino
parents:
8105
diff
changeset
|
3169 return JNI_ERR; |
6854
fb19af007ffc
7189254: Change makefiles for more flexibility to override defaults
jprovino
parents:
6818
diff
changeset
|
3170 #endif |
6197 | 3171 } |
3172 | |
1768
6ee479178066
6979444: add command line option to print command line flags descriptions
ikrylov
parents:
1745
diff
changeset
|
3173 |
6ee479178066
6979444: add command line option to print command line flags descriptions
ikrylov
parents:
1745
diff
changeset
|
3174 #ifndef PRODUCT |
6ee479178066
6979444: add command line option to print command line flags descriptions
ikrylov
parents:
1745
diff
changeset
|
3175 if (match_option(option, "-XX:+PrintFlagsWithComments", &tail)) { |
4773 | 3176 CommandLineFlags::printFlags(tty, true); |
1768
6ee479178066
6979444: add command line option to print command line flags descriptions
ikrylov
parents:
1745
diff
changeset
|
3177 vm_exit(0); |
6ee479178066
6979444: add command line option to print command line flags descriptions
ikrylov
parents:
1745
diff
changeset
|
3178 } |
6ee479178066
6979444: add command line option to print command line flags descriptions
ikrylov
parents:
1745
diff
changeset
|
3179 #endif |
564 | 3180 } |
3181 | |
3182 if (IgnoreUnrecognizedVMOptions) { | |
3183 // uncast const to modify the flag args->ignoreUnrecognized | |
3184 *(jboolean*)(&args->ignoreUnrecognized) = true; | |
3185 } | |
3186 | |
3187 // Parse specified settings file | |
3188 if (settings_file_specified) { | |
3189 if (!process_settings_file(flags_file, true, args->ignoreUnrecognized)) { | |
3190 return JNI_EINVAL; | |
3191 } | |
6196
3759236eea14
7167142: Consider a warning when finding a .hotspotrc or .hotspot_compiler file that isn't used
kamg
parents:
6158
diff
changeset
|
3192 } else { |
6150
1e76463170b3
7110720: Issue with vm config file loadingIssue with vm config file loading
kamg
parents:
4780
diff
changeset
|
3193 #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
|
3194 // Parse default .hotspotrc settings file |
0 | 3195 if (!process_settings_file(".hotspotrc", false, args->ignoreUnrecognized)) { |
3196 return JNI_EINVAL; | |
3197 } | |
6196
3759236eea14
7167142: Consider a warning when finding a .hotspotrc or .hotspot_compiler file that isn't used
kamg
parents:
6158
diff
changeset
|
3198 #else |
3759236eea14
7167142: Consider a warning when finding a .hotspotrc or .hotspot_compiler file that isn't used
kamg
parents:
6158
diff
changeset
|
3199 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
|
3200 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
|
3201 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
|
3202 } |
3759236eea14
7167142: Consider a warning when finding a .hotspotrc or .hotspot_compiler file that isn't used
kamg
parents:
6158
diff
changeset
|
3203 #endif |
0 | 3204 } |
3205 | |
3206 if (PrintVMOptions) { | |
3207 for (index = 0; index < args->nOptions; index++) { | |
3208 const JavaVMOption *option = args->options + index; | |
3209 if (match_option(option, "-XX:", &tail)) { | |
3210 logOption(tail); | |
3211 } | |
3212 } | |
3213 } | |
3214 | |
3215 // Parse JavaVMInitArgs structure passed in, as well as JAVA_TOOL_OPTIONS and _JAVA_OPTIONS | |
3216 jint result = parse_vm_init_args(args); | |
3217 if (result != JNI_OK) { | |
3218 return result; | |
3219 } | |
3220 | |
6196
3759236eea14
7167142: Consider a warning when finding a .hotspotrc or .hotspot_compiler file that isn't used
kamg
parents:
6158
diff
changeset
|
3221 // 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
|
3222 // 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
|
3223 if (needs_hotspotrc_warning) { |
3759236eea14
7167142: Consider a warning when finding a .hotspotrc or .hotspot_compiler file that isn't used
kamg
parents:
6158
diff
changeset
|
3224 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
|
3225 "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
|
3226 hotspotrc, hotspotrc); |
3759236eea14
7167142: Consider a warning when finding a .hotspotrc or .hotspot_compiler file that isn't used
kamg
parents:
6158
diff
changeset
|
3227 } |
3759236eea14
7167142: Consider a warning when finding a .hotspotrc or .hotspot_compiler file that isn't used
kamg
parents:
6158
diff
changeset
|
3228 |
6917
e81fbc04a942
7191817: -XX:+UseSerialGC -XX:+UseLargePages crashes with SIGFPE on MacOS X
coleenp
parents:
6916
diff
changeset
|
3229 #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
|
3230 UNSUPPORTED_OPTION(UseLargePages, "-XX:+UseLargePages"); |
e81fbc04a942
7191817: -XX:+UseSerialGC -XX:+UseLargePages crashes with SIGFPE on MacOS X
coleenp
parents:
6916
diff
changeset
|
3231 #endif |
e81fbc04a942
7191817: -XX:+UseSerialGC -XX:+UseLargePages crashes with SIGFPE on MacOS X
coleenp
parents:
6916
diff
changeset
|
3232 |
8086
1605eef8e11e
8003581: UseG1GC is not properly accounted for by INCLUDE_ALTERNATE_GCS
jprovino
parents:
8083
diff
changeset
|
3233 #if INCLUDE_ALL_GCS |
1605eef8e11e
8003581: UseG1GC is not properly accounted for by INCLUDE_ALTERNATE_GCS
jprovino
parents:
8083
diff
changeset
|
3234 #if (defined JAVASE_EMBEDDED || defined ARM) |
1605eef8e11e
8003581: UseG1GC is not properly accounted for by INCLUDE_ALTERNATE_GCS
jprovino
parents:
8083
diff
changeset
|
3235 UNSUPPORTED_OPTION(UseG1GC, "G1 GC"); |
1605eef8e11e
8003581: UseG1GC is not properly accounted for by INCLUDE_ALTERNATE_GCS
jprovino
parents:
8083
diff
changeset
|
3236 #endif |
1605eef8e11e
8003581: UseG1GC is not properly accounted for by INCLUDE_ALTERNATE_GCS
jprovino
parents:
8083
diff
changeset
|
3237 #endif |
6854
fb19af007ffc
7189254: Change makefiles for more flexibility to override defaults
jprovino
parents:
6818
diff
changeset
|
3238 |
0 | 3239 #ifndef PRODUCT |
3240 if (TraceBytecodesAt != 0) { | |
3241 TraceBytecodes = true; | |
3242 } | |
3243 if (CountCompiledCalls) { | |
3244 if (UseCounterDecay) { | |
3245 warning("UseCounterDecay disabled because CountCalls is set"); | |
3246 UseCounterDecay = false; | |
3247 } | |
3248 } | |
3249 #endif // PRODUCT | |
3250 | |
2416
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
3251 // 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
|
3252 if (!JDK_Version::is_gte_jdk17x_version()) { |
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
3253 if (EnableInvokeDynamic) { |
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
3254 if (!FLAG_IS_DEFAULT(EnableInvokeDynamic)) { |
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
3255 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
|
3256 } |
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
3257 EnableInvokeDynamic = false; |
710 | 3258 } |
3259 } | |
2416
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
3260 |
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
3261 if (EnableInvokeDynamic && ScavengeRootsInCode == 0) { |
989
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
932
diff
changeset
|
3262 if (!FLAG_IS_DEFAULT(ScavengeRootsInCode)) { |
2416
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
3263 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
|
3264 } |
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
932
diff
changeset
|
3265 ScavengeRootsInCode = 1; |
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
932
diff
changeset
|
3266 } |
710 | 3267 |
0 | 3268 if (PrintGCDetails) { |
3269 // Turn on -verbose:gc options as well | |
3270 PrintGC = true; | |
3271 } | |
3272 | |
6064
9d679effd28c
7166894: Add gc cause to GC logging for all collectors
brutisso
parents:
6017
diff
changeset
|
3273 if (!JDK_Version::is_gte_jdk18x_version()) { |
9d679effd28c
7166894: Add gc cause to GC logging for all collectors
brutisso
parents:
6017
diff
changeset
|
3274 // 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
|
3275 // true by default in JDK8 and above. |
9d679effd28c
7166894: Add gc cause to GC logging for all collectors
brutisso
parents:
6017
diff
changeset
|
3276 if (FLAG_IS_DEFAULT(PrintGCCause)) { |
9d679effd28c
7166894: Add gc cause to GC logging for all collectors
brutisso
parents:
6017
diff
changeset
|
3277 FLAG_SET_DEFAULT(PrintGCCause, false); |
9d679effd28c
7166894: Add gc cause to GC logging for all collectors
brutisso
parents:
6017
diff
changeset
|
3278 } |
9d679effd28c
7166894: Add gc cause to GC logging for all collectors
brutisso
parents:
6017
diff
changeset
|
3279 } |
9d679effd28c
7166894: Add gc cause to GC logging for all collectors
brutisso
parents:
6017
diff
changeset
|
3280 |
1571
2d127394260e
6916623: Align object to 16 bytes to use Compressed Oops with java heap up to 64Gb
kvn
parents:
1506
diff
changeset
|
3281 // 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
|
3282 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
|
3283 |
8001
db9981fd3124
8005915: Unify SERIALGC and INCLUDE_ALTERNATE_GCS
jprovino
parents:
7479
diff
changeset
|
3284 #if !INCLUDE_ALL_GCS |
1064 | 3285 force_serial_gc(); |
8001
db9981fd3124
8005915: Unify SERIALGC and INCLUDE_ALTERNATE_GCS
jprovino
parents:
7479
diff
changeset
|
3286 #endif // INCLUDE_ALL_GCS |
6854
fb19af007ffc
7189254: Change makefiles for more flexibility to override defaults
jprovino
parents:
6818
diff
changeset
|
3287 #if !INCLUDE_CDS |
8720
fad90b102190
8008310: Some adjustments needed to minimal VM warnings and errors for unsupported command line options
jprovino
parents:
8105
diff
changeset
|
3288 if (DumpSharedSpaces || RequireSharedSpaces) { |
fad90b102190
8008310: Some adjustments needed to minimal VM warnings and errors for unsupported command line options
jprovino
parents:
8105
diff
changeset
|
3289 jio_fprintf(defaultStream::error_stream(), |
fad90b102190
8008310: Some adjustments needed to minimal VM warnings and errors for unsupported command line options
jprovino
parents:
8105
diff
changeset
|
3290 "Shared spaces are not supported in this VM\n"); |
fad90b102190
8008310: Some adjustments needed to minimal VM warnings and errors for unsupported command line options
jprovino
parents:
8105
diff
changeset
|
3291 return JNI_ERR; |
fad90b102190
8008310: Some adjustments needed to minimal VM warnings and errors for unsupported command line options
jprovino
parents:
8105
diff
changeset
|
3292 } |
8724
69ffa4ac9e53
8009835: Only produce a warning when -Xshare:auto is explicitly requested
jprovino
parents:
8720
diff
changeset
|
3293 if ((UseSharedSpaces && FLAG_IS_CMDLINE(UseSharedSpaces)) || PrintSharedSpaces) { |
8720
fad90b102190
8008310: Some adjustments needed to minimal VM warnings and errors for unsupported command line options
jprovino
parents:
8105
diff
changeset
|
3294 warning("Shared spaces are not supported in this VM"); |
fad90b102190
8008310: Some adjustments needed to minimal VM warnings and errors for unsupported command line options
jprovino
parents:
8105
diff
changeset
|
3295 FLAG_SET_DEFAULT(UseSharedSpaces, false); |
fad90b102190
8008310: Some adjustments needed to minimal VM warnings and errors for unsupported command line options
jprovino
parents:
8105
diff
changeset
|
3296 FLAG_SET_DEFAULT(PrintSharedSpaces, false); |
fad90b102190
8008310: Some adjustments needed to minimal VM warnings and errors for unsupported command line options
jprovino
parents:
8105
diff
changeset
|
3297 } |
0 | 3298 no_shared_spaces(); |
6854
fb19af007ffc
7189254: Change makefiles for more flexibility to override defaults
jprovino
parents:
6818
diff
changeset
|
3299 #endif // INCLUDE_CDS |
0 | 3300 |
3301 // Set flags based on ergonomics. | |
3302 set_ergonomics_flags(); | |
3303 | |
2362
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
3304 set_shared_spaces_flags(); |
1135
e66fd840cb6b
6893081: method handle & invokedynamic code needs additional cleanup (post 6815692, 6858164)
twisti
parents:
1131
diff
changeset
|
3305 |
10
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
3306 // Check the GC selections again. |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
3307 if (!check_gc_consistency()) { |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
3308 return JNI_EINVAL; |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
3309 } |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
3310 |
1783 | 3311 if (TieredCompilation) { |
3312 set_tiered_flags(); | |
3313 } else { | |
3314 // Check if the policy is valid. Policies 0 and 1 are valid for non-tiered setup. | |
3315 if (CompilationPolicyChoice >= 2) { | |
3316 vm_exit_during_initialization( | |
3317 "Incompatible compilation policy selected", NULL); | |
3318 } | |
3319 } | |
3320 | |
2368
dde920245681
6896099: Integrate CMS heap ergo with default heap sizing ergo
ysr
parents:
2366
diff
changeset
|
3321 // Set heap size based on available physical memory |
dde920245681
6896099: Integrate CMS heap ergo with default heap sizing ergo
ysr
parents:
2366
diff
changeset
|
3322 set_heap_size(); |
6854
fb19af007ffc
7189254: Change makefiles for more flexibility to override defaults
jprovino
parents:
6818
diff
changeset
|
3323 |
8001
db9981fd3124
8005915: Unify SERIALGC and INCLUDE_ALTERNATE_GCS
jprovino
parents:
7479
diff
changeset
|
3324 #if INCLUDE_ALL_GCS |
2368
dde920245681
6896099: Integrate CMS heap ergo with default heap sizing ergo
ysr
parents:
2366
diff
changeset
|
3325 // Set per-collector flags |
dde920245681
6896099: Integrate CMS heap ergo with default heap sizing ergo
ysr
parents:
2366
diff
changeset
|
3326 if (UseParallelGC || UseParallelOldGC) { |
dde920245681
6896099: Integrate CMS heap ergo with default heap sizing ergo
ysr
parents:
2366
diff
changeset
|
3327 set_parallel_gc_flags(); |
dde920245681
6896099: Integrate CMS heap ergo with default heap sizing ergo
ysr
parents:
2366
diff
changeset
|
3328 } 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
|
3329 set_cms_and_parnew_gc_flags(); |
2368
dde920245681
6896099: Integrate CMS heap ergo with default heap sizing ergo
ysr
parents:
2366
diff
changeset
|
3330 } 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
|
3331 set_parnew_gc_flags(); |
dde920245681
6896099: Integrate CMS heap ergo with default heap sizing ergo
ysr
parents:
2366
diff
changeset
|
3332 } else if (UseG1GC) { |
dde920245681
6896099: Integrate CMS heap ergo with default heap sizing ergo
ysr
parents:
2366
diff
changeset
|
3333 set_g1_gc_flags(); |
342
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
135
diff
changeset
|
3334 } |
7452
e0ab18eafbde
8003820: Deprecate untested and rarely used GC combinations
brutisso
parents:
7451
diff
changeset
|
3335 check_deprecated_gcs(); |
8734 | 3336 check_deprecated_gc_flags(); |
8845
1b90c7607451
2178143: JVM crashes if the number of bound CPUs changed during runtime
minqi
parents:
8819
diff
changeset
|
3337 if (AssumeMP && !UseSerialGC) { |
1b90c7607451
2178143: JVM crashes if the number of bound CPUs changed during runtime
minqi
parents:
8819
diff
changeset
|
3338 if (FLAG_IS_DEFAULT(ParallelGCThreads) && ParallelGCThreads == 1) { |
1b90c7607451
2178143: JVM crashes if the number of bound CPUs changed during runtime
minqi
parents:
8819
diff
changeset
|
3339 warning("If the number of processors is expected to increase from one, then" |
1b90c7607451
2178143: JVM crashes if the number of bound CPUs changed during runtime
minqi
parents:
8819
diff
changeset
|
3340 " you should configure the number of parallel GC threads appropriately" |
1b90c7607451
2178143: JVM crashes if the number of bound CPUs changed during runtime
minqi
parents:
8819
diff
changeset
|
3341 " using -XX:ParallelGCThreads=N"); |
1b90c7607451
2178143: JVM crashes if the number of bound CPUs changed during runtime
minqi
parents:
8819
diff
changeset
|
3342 } |
1b90c7607451
2178143: JVM crashes if the number of bound CPUs changed during runtime
minqi
parents:
8819
diff
changeset
|
3343 } |
8001
db9981fd3124
8005915: Unify SERIALGC and INCLUDE_ALTERNATE_GCS
jprovino
parents:
7479
diff
changeset
|
3344 #else // INCLUDE_ALL_GCS |
0 | 3345 assert(verify_serial_gc_flags(), "SerialGC unset"); |
8001
db9981fd3124
8005915: Unify SERIALGC and INCLUDE_ALTERNATE_GCS
jprovino
parents:
7479
diff
changeset
|
3346 #endif // INCLUDE_ALL_GCS |
0 | 3347 |
3348 // Set bytecode rewriting flags | |
3349 set_bytecode_flags(); | |
3350 | |
3351 // Set flags if Aggressive optimization flags (-XX:+AggressiveOpts) enabled. | |
3352 set_aggressive_opts_flags(); | |
3353 | |
2239
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3354 // Turn off biased locking for locking debug mode flags, |
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3355 // 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
|
3356 // biased locking. |
2331 | 3357 if (UseHeavyMonitors |
3358 #ifdef COMPILER1 | |
3359 || !UseFastLocking | |
3360 #endif // COMPILER1 | |
3361 ) { | |
2239
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3362 if (!FLAG_IS_DEFAULT(UseBiasedLocking) && UseBiasedLocking) { |
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3363 // 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
|
3364 // can't enable biased locking here |
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3365 warning("Biased Locking is not supported with locking debug flags" |
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3366 "; ignoring UseBiasedLocking flag." ); |
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3367 } |
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3368 UseBiasedLocking = false; |
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3369 } |
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3370 |
0 | 3371 #ifdef CC_INTERP |
1131 | 3372 // Clear flags not supported by the C++ interpreter |
3373 FLAG_SET_DEFAULT(ProfileInterpreter, false); | |
0 | 3374 FLAG_SET_DEFAULT(UseBiasedLocking, false); |
1131 | 3375 LP64_ONLY(FLAG_SET_DEFAULT(UseCompressedOops, false)); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6628
diff
changeset
|
3376 LP64_ONLY(FLAG_SET_DEFAULT(UseCompressedKlassPointers, false)); |
1131 | 3377 #endif // CC_INTERP |
3378 | |
420
a1980da045cc
6462850: generate biased locking code in C2 ideal graph
kvn
parents:
416
diff
changeset
|
3379 #ifdef COMPILER2 |
a1980da045cc
6462850: generate biased locking code in C2 ideal graph
kvn
parents:
416
diff
changeset
|
3380 if (!UseBiasedLocking || EmitSync != 0) { |
a1980da045cc
6462850: generate biased locking code in C2 ideal graph
kvn
parents:
416
diff
changeset
|
3381 UseOptoBiasInlining = false; |
a1980da045cc
6462850: generate biased locking code in C2 ideal graph
kvn
parents:
416
diff
changeset
|
3382 } |
4777 | 3383 if (!EliminateLocks) { |
3384 EliminateNestedLocks = false; | |
3385 } | |
7473 | 3386 if (!Inline) { |
3387 IncrementalInline = false; | |
3388 } | |
3389 #ifndef PRODUCT | |
3390 if (!IncrementalInline) { | |
3391 AlwaysIncrementalInline = false; | |
3392 } | |
3393 #endif | |
3394 if (IncrementalInline && FLAG_IS_DEFAULT(MaxNodeLimit)) { | |
3395 // incremental inlining: bump MaxNodeLimit | |
3396 FLAG_SET_DEFAULT(MaxNodeLimit, (intx)75000); | |
3397 } | |
420
a1980da045cc
6462850: generate biased locking code in C2 ideal graph
kvn
parents:
416
diff
changeset
|
3398 #endif |
a1980da045cc
6462850: generate biased locking code in C2 ideal graph
kvn
parents:
416
diff
changeset
|
3399 |
1155
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1150
diff
changeset
|
3400 if (PrintAssembly && FLAG_IS_DEFAULT(DebugNonSafepoints)) { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1150
diff
changeset
|
3401 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
|
3402 DebugNonSafepoints = true; |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1150
diff
changeset
|
3403 } |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1150
diff
changeset
|
3404 |
1188
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents:
1161
diff
changeset
|
3405 #ifndef PRODUCT |
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents:
1161
diff
changeset
|
3406 if (CompileTheWorld) { |
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents:
1161
diff
changeset
|
3407 // 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
|
3408 if (FLAG_IS_DEFAULT(NmethodSweepFraction)) { |
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents:
1161
diff
changeset
|
3409 NmethodSweepFraction = 1; |
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents:
1161
diff
changeset
|
3410 } |
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents:
1161
diff
changeset
|
3411 } |
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents:
1161
diff
changeset
|
3412 #endif |
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents:
1161
diff
changeset
|
3413 |
0 | 3414 if (PrintCommandLineFlags) { |
4773 | 3415 CommandLineFlags::printSetFlags(tty); |
0 | 3416 } |
3417 | |
1681
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
3418 // Apply CPU specific policy for the BiasedLocking |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
3419 if (UseBiasedLocking) { |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
3420 if (!VM_Version::use_biased_locking() && |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
3421 !(FLAG_IS_CMDLINE(UseBiasedLocking))) { |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
3422 UseBiasedLocking = false; |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
3423 } |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
3424 } |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
3425 |
2302
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
3426 // set PauseAtExit if the gamma launcher was used and a debugger is attached |
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
3427 // but only if not already set on the commandline |
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
3428 if (Arguments::created_by_gamma_launcher() && os::is_debugger_attached()) { |
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
3429 bool set = false; |
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
3430 CommandLineFlags::wasSetOnCmdline("PauseAtExit", &set); |
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
3431 if (!set) { |
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
3432 FLAG_SET_DEFAULT(PauseAtExit, true); |
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
3433 } |
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
3434 } |
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
3435 |
0 | 3436 return JNI_OK; |
3437 } | |
3438 | |
7177
53715fb1597d
7198334: UseNUMA modifies system parameters on non-NUMA system
brutisso
parents:
6982
diff
changeset
|
3439 jint Arguments::adjust_after_os() { |
8001
db9981fd3124
8005915: Unify SERIALGC and INCLUDE_ALTERNATE_GCS
jprovino
parents:
7479
diff
changeset
|
3440 #if INCLUDE_ALL_GCS |
7177
53715fb1597d
7198334: UseNUMA modifies system parameters on non-NUMA system
brutisso
parents:
6982
diff
changeset
|
3441 if (UseParallelGC || UseParallelOldGC) { |
53715fb1597d
7198334: UseNUMA modifies system parameters on non-NUMA system
brutisso
parents:
6982
diff
changeset
|
3442 if (UseNUMA) { |
53715fb1597d
7198334: UseNUMA modifies system parameters on non-NUMA system
brutisso
parents:
6982
diff
changeset
|
3443 if (FLAG_IS_DEFAULT(MinHeapDeltaBytes)) { |
53715fb1597d
7198334: UseNUMA modifies system parameters on non-NUMA system
brutisso
parents:
6982
diff
changeset
|
3444 FLAG_SET_DEFAULT(MinHeapDeltaBytes, 64*M); |
53715fb1597d
7198334: UseNUMA modifies system parameters on non-NUMA system
brutisso
parents:
6982
diff
changeset
|
3445 } |
53715fb1597d
7198334: UseNUMA modifies system parameters on non-NUMA system
brutisso
parents:
6982
diff
changeset
|
3446 // For those collectors or operating systems (eg, Windows) that do |
53715fb1597d
7198334: UseNUMA modifies system parameters on non-NUMA system
brutisso
parents:
6982
diff
changeset
|
3447 // not support full UseNUMA, we will map to UseNUMAInterleaving for now |
53715fb1597d
7198334: UseNUMA modifies system parameters on non-NUMA system
brutisso
parents:
6982
diff
changeset
|
3448 UseNUMAInterleaving = true; |
53715fb1597d
7198334: UseNUMA modifies system parameters on non-NUMA system
brutisso
parents:
6982
diff
changeset
|
3449 } |
53715fb1597d
7198334: UseNUMA modifies system parameters on non-NUMA system
brutisso
parents:
6982
diff
changeset
|
3450 } |
8001
db9981fd3124
8005915: Unify SERIALGC and INCLUDE_ALTERNATE_GCS
jprovino
parents:
7479
diff
changeset
|
3451 #endif // INCLUDE_ALL_GCS |
7177
53715fb1597d
7198334: UseNUMA modifies system parameters on non-NUMA system
brutisso
parents:
6982
diff
changeset
|
3452 return JNI_OK; |
53715fb1597d
7198334: UseNUMA modifies system parameters on non-NUMA system
brutisso
parents:
6982
diff
changeset
|
3453 } |
53715fb1597d
7198334: UseNUMA modifies system parameters on non-NUMA system
brutisso
parents:
6982
diff
changeset
|
3454 |
0 | 3455 int Arguments::PropertyList_count(SystemProperty* pl) { |
3456 int count = 0; | |
3457 while(pl != NULL) { | |
3458 count++; | |
3459 pl = pl->next(); | |
3460 } | |
3461 return count; | |
3462 } | |
3463 | |
3464 const char* Arguments::PropertyList_get_value(SystemProperty *pl, const char* key) { | |
3465 assert(key != NULL, "just checking"); | |
3466 SystemProperty* prop; | |
3467 for (prop = pl; prop != NULL; prop = prop->next()) { | |
3468 if (strcmp(key, prop->key()) == 0) return prop->value(); | |
3469 } | |
3470 return NULL; | |
3471 } | |
3472 | |
3473 const char* Arguments::PropertyList_get_key_at(SystemProperty *pl, int index) { | |
3474 int count = 0; | |
3475 const char* ret_val = NULL; | |
3476 | |
3477 while(pl != NULL) { | |
3478 if(count >= index) { | |
3479 ret_val = pl->key(); | |
3480 break; | |
3481 } | |
3482 count++; | |
3483 pl = pl->next(); | |
3484 } | |
3485 | |
3486 return ret_val; | |
3487 } | |
3488 | |
3489 char* Arguments::PropertyList_get_value_at(SystemProperty* pl, int index) { | |
3490 int count = 0; | |
3491 char* ret_val = NULL; | |
3492 | |
3493 while(pl != NULL) { | |
3494 if(count >= index) { | |
3495 ret_val = pl->value(); | |
3496 break; | |
3497 } | |
3498 count++; | |
3499 pl = pl->next(); | |
3500 } | |
3501 | |
3502 return ret_val; | |
3503 } | |
3504 | |
3505 void Arguments::PropertyList_add(SystemProperty** plist, SystemProperty *new_p) { | |
3506 SystemProperty* p = *plist; | |
3507 if (p == NULL) { | |
3508 *plist = new_p; | |
3509 } else { | |
3510 while (p->next() != NULL) { | |
3511 p = p->next(); | |
3512 } | |
3513 p->set_next(new_p); | |
3514 } | |
3515 } | |
3516 | |
3517 void Arguments::PropertyList_add(SystemProperty** plist, const char* k, char* v) { | |
3518 if (plist == NULL) | |
3519 return; | |
3520 | |
3521 SystemProperty* new_p = new SystemProperty(k, v, true); | |
3522 PropertyList_add(plist, new_p); | |
3523 } | |
3524 | |
3525 // This add maintains unique property key in the list. | |
691 | 3526 void Arguments::PropertyList_unique_add(SystemProperty** plist, const char* k, char* v, jboolean append) { |
0 | 3527 if (plist == NULL) |
3528 return; | |
3529 | |
3530 // If property key exist then update with new value. | |
3531 SystemProperty* prop; | |
3532 for (prop = *plist; prop != NULL; prop = prop->next()) { | |
3533 if (strcmp(k, prop->key()) == 0) { | |
691 | 3534 if (append) { |
3535 prop->append_value(v); | |
3536 } else { | |
3537 prop->set_value(v); | |
3538 } | |
0 | 3539 return; |
3540 } | |
3541 } | |
3542 | |
3543 PropertyList_add(plist, k, v); | |
3544 } | |
3545 | |
3546 // Copies src into buf, replacing "%%" with "%" and "%p" with pid | |
3547 // Returns true if all of the source pointed by src has been copied over to | |
3548 // the destination buffer pointed by buf. Otherwise, returns false. | |
3549 // Notes: | |
3550 // 1. If the length (buflen) of the destination buffer excluding the | |
3551 // NULL terminator character is not long enough for holding the expanded | |
3552 // pid characters, it also returns false instead of returning the partially | |
3553 // expanded one. | |
3554 // 2. The passed in "buflen" should be large enough to hold the null terminator. | |
3555 bool Arguments::copy_expand_pid(const char* src, size_t srclen, | |
3556 char* buf, size_t buflen) { | |
3557 const char* p = src; | |
3558 char* b = buf; | |
3559 const char* src_end = &src[srclen]; | |
3560 char* buf_end = &buf[buflen - 1]; | |
3561 | |
3562 while (p < src_end && b < buf_end) { | |
3563 if (*p == '%') { | |
3564 switch (*(++p)) { | |
3565 case '%': // "%%" ==> "%" | |
3566 *b++ = *p++; | |
3567 break; | |
3568 case 'p': { // "%p" ==> current process id | |
3569 // buf_end points to the character before the last character so | |
3570 // that we could write '\0' to the end of the buffer. | |
3571 size_t buf_sz = buf_end - b + 1; | |
3572 int ret = jio_snprintf(b, buf_sz, "%d", os::current_process_id()); | |
3573 | |
3574 // if jio_snprintf fails or the buffer is not long enough to hold | |
3575 // the expanded pid, returns false. | |
3576 if (ret < 0 || ret >= (int)buf_sz) { | |
3577 return false; | |
3578 } else { | |
3579 b += ret; | |
3580 assert(*b == '\0', "fail in copy_expand_pid"); | |
3581 if (p == src_end && b == buf_end + 1) { | |
3582 // reach the end of the buffer. | |
3583 return true; | |
3584 } | |
3585 } | |
3586 p++; | |
3587 break; | |
3588 } | |
3589 default : | |
3590 *b++ = '%'; | |
3591 } | |
3592 } else { | |
3593 *b++ = *p++; | |
3594 } | |
3595 } | |
3596 *b = '\0'; | |
3597 return (p == src_end); // return false if not all of the source was copied | |
3598 } |