Mercurial > hg > graal-compiler
annotate src/share/vm/runtime/arguments.cpp @ 8001:db9981fd3124
8005915: Unify SERIALGC and INCLUDE_ALTERNATE_GCS
Summary: Rename INCLUDE_ALTERNATE_GCS to INCLUDE_ALL_GCS and replace SERIALGC with INCLUDE_ALL_GCS.
Reviewed-by: coleenp, stefank
author | jprovino |
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date | Wed, 23 Jan 2013 13:02:39 -0500 |
parents | f1c06dcee0b5 |
children | 8391fdd36e1f |
rev | line source |
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0 | 1 /* |
4838 | 2 * Copyright (c) 1997, 2012, 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 #ifdef PRODUCT |
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264 { "DesiredMethodLimit", |
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265 JDK_Version::jdk_update(7, 2), JDK_Version::jdk(8) }, |
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266 #endif // PRODUCT |
242 | 267 { NULL, JDK_Version(0), JDK_Version(0) } |
268 }; | |
269 | |
270 // Returns true if the flag is obsolete and fits into the range specified | |
271 // for being ignored. In the case that the flag is ignored, the 'version' | |
272 // value is filled in with the version number when the flag became | |
273 // obsolete so that that value can be displayed to the user. | |
274 bool Arguments::is_newly_obsolete(const char *s, JDK_Version* version) { | |
0 | 275 int i = 0; |
242 | 276 assert(version != NULL, "Must provide a version buffer"); |
277 while (obsolete_jvm_flags[i].name != NULL) { | |
278 const ObsoleteFlag& flag_status = obsolete_jvm_flags[i]; | |
0 | 279 // <flag>=xxx form |
280 // [-|+]<flag> form | |
242 | 281 if ((strncmp(flag_status.name, s, strlen(flag_status.name)) == 0) || |
0 | 282 ((s[0] == '+' || s[0] == '-') && |
242 | 283 (strncmp(flag_status.name, &s[1], strlen(flag_status.name)) == 0))) { |
284 if (JDK_Version::current().compare(flag_status.accept_until) == -1) { | |
285 *version = flag_status.obsoleted_in; | |
286 return true; | |
287 } | |
0 | 288 } |
289 i++; | |
290 } | |
291 return false; | |
292 } | |
293 | |
294 // Constructs the system class path (aka boot class path) from the following | |
295 // components, in order: | |
296 // | |
297 // prefix // from -Xbootclasspath/p:... | |
298 // endorsed // the expansion of -Djava.endorsed.dirs=... | |
299 // base // from os::get_system_properties() or -Xbootclasspath= | |
300 // suffix // from -Xbootclasspath/a:... | |
301 // | |
302 // java.endorsed.dirs is a list of directories; any jar or zip files in the | |
303 // directories are added to the sysclasspath just before the base. | |
304 // | |
305 // This could be AllStatic, but it isn't needed after argument processing is | |
306 // complete. | |
307 class SysClassPath: public StackObj { | |
308 public: | |
309 SysClassPath(const char* base); | |
310 ~SysClassPath(); | |
311 | |
312 inline void set_base(const char* base); | |
313 inline void add_prefix(const char* prefix); | |
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314 inline void add_suffix_to_prefix(const char* suffix); |
0 | 315 inline void add_suffix(const char* suffix); |
316 inline void reset_path(const char* base); | |
317 | |
318 // Expand the jar/zip files in each directory listed by the java.endorsed.dirs | |
319 // property. Must be called after all command-line arguments have been | |
320 // processed (in particular, -Djava.endorsed.dirs=...) and before calling | |
321 // combined_path(). | |
322 void expand_endorsed(); | |
323 | |
324 inline const char* get_base() const { return _items[_scp_base]; } | |
325 inline const char* get_prefix() const { return _items[_scp_prefix]; } | |
326 inline const char* get_suffix() const { return _items[_scp_suffix]; } | |
327 inline const char* get_endorsed() const { return _items[_scp_endorsed]; } | |
328 | |
329 // Combine all the components into a single c-heap-allocated string; caller | |
330 // must free the string if/when no longer needed. | |
331 char* combined_path(); | |
332 | |
333 private: | |
334 // Utility routines. | |
335 static char* add_to_path(const char* path, const char* str, bool prepend); | |
336 static char* add_jars_to_path(char* path, const char* directory); | |
337 | |
338 inline void reset_item_at(int index); | |
339 | |
340 // Array indices for the items that make up the sysclasspath. All except the | |
341 // base are allocated in the C heap and freed by this class. | |
342 enum { | |
343 _scp_prefix, // from -Xbootclasspath/p:... | |
344 _scp_endorsed, // the expansion of -Djava.endorsed.dirs=... | |
345 _scp_base, // the default sysclasspath | |
346 _scp_suffix, // from -Xbootclasspath/a:... | |
347 _scp_nitems // the number of items, must be last. | |
348 }; | |
349 | |
350 const char* _items[_scp_nitems]; | |
351 DEBUG_ONLY(bool _expansion_done;) | |
352 }; | |
353 | |
354 SysClassPath::SysClassPath(const char* base) { | |
355 memset(_items, 0, sizeof(_items)); | |
356 _items[_scp_base] = base; | |
357 DEBUG_ONLY(_expansion_done = false;) | |
358 } | |
359 | |
360 SysClassPath::~SysClassPath() { | |
361 // Free everything except the base. | |
362 for (int i = 0; i < _scp_nitems; ++i) { | |
363 if (i != _scp_base) reset_item_at(i); | |
364 } | |
365 DEBUG_ONLY(_expansion_done = false;) | |
366 } | |
367 | |
368 inline void SysClassPath::set_base(const char* base) { | |
369 _items[_scp_base] = base; | |
370 } | |
371 | |
372 inline void SysClassPath::add_prefix(const char* prefix) { | |
373 _items[_scp_prefix] = add_to_path(_items[_scp_prefix], prefix, true); | |
374 } | |
375 | |
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376 inline void SysClassPath::add_suffix_to_prefix(const char* suffix) { |
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377 _items[_scp_prefix] = add_to_path(_items[_scp_prefix], suffix, false); |
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378 } |
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379 |
0 | 380 inline void SysClassPath::add_suffix(const char* suffix) { |
381 _items[_scp_suffix] = add_to_path(_items[_scp_suffix], suffix, false); | |
382 } | |
383 | |
384 inline void SysClassPath::reset_item_at(int index) { | |
385 assert(index < _scp_nitems && index != _scp_base, "just checking"); | |
386 if (_items[index] != NULL) { | |
6197 | 387 FREE_C_HEAP_ARRAY(char, _items[index], mtInternal); |
0 | 388 _items[index] = NULL; |
389 } | |
390 } | |
391 | |
392 inline void SysClassPath::reset_path(const char* base) { | |
393 // Clear the prefix and suffix. | |
394 reset_item_at(_scp_prefix); | |
395 reset_item_at(_scp_suffix); | |
396 set_base(base); | |
397 } | |
398 | |
399 //------------------------------------------------------------------------------ | |
400 | |
401 void SysClassPath::expand_endorsed() { | |
402 assert(_items[_scp_endorsed] == NULL, "can only be called once."); | |
403 | |
404 const char* path = Arguments::get_property("java.endorsed.dirs"); | |
405 if (path == NULL) { | |
406 path = Arguments::get_endorsed_dir(); | |
407 assert(path != NULL, "no default for java.endorsed.dirs"); | |
408 } | |
409 | |
410 char* expanded_path = NULL; | |
411 const char separator = *os::path_separator(); | |
412 const char* const end = path + strlen(path); | |
413 while (path < end) { | |
414 const char* tmp_end = strchr(path, separator); | |
415 if (tmp_end == NULL) { | |
416 expanded_path = add_jars_to_path(expanded_path, path); | |
417 path = end; | |
418 } else { | |
6197 | 419 char* dirpath = NEW_C_HEAP_ARRAY(char, tmp_end - path + 1, mtInternal); |
0 | 420 memcpy(dirpath, path, tmp_end - path); |
421 dirpath[tmp_end - path] = '\0'; | |
422 expanded_path = add_jars_to_path(expanded_path, dirpath); | |
6197 | 423 FREE_C_HEAP_ARRAY(char, dirpath, mtInternal); |
0 | 424 path = tmp_end + 1; |
425 } | |
426 } | |
427 _items[_scp_endorsed] = expanded_path; | |
428 DEBUG_ONLY(_expansion_done = true;) | |
429 } | |
430 | |
431 // Combine the bootclasspath elements, some of which may be null, into a single | |
432 // c-heap-allocated string. | |
433 char* SysClassPath::combined_path() { | |
434 assert(_items[_scp_base] != NULL, "empty default sysclasspath"); | |
435 assert(_expansion_done, "must call expand_endorsed() first."); | |
436 | |
437 size_t lengths[_scp_nitems]; | |
438 size_t total_len = 0; | |
439 | |
440 const char separator = *os::path_separator(); | |
441 | |
442 // Get the lengths. | |
443 int i; | |
444 for (i = 0; i < _scp_nitems; ++i) { | |
445 if (_items[i] != NULL) { | |
446 lengths[i] = strlen(_items[i]); | |
447 // Include space for the separator char (or a NULL for the last item). | |
448 total_len += lengths[i] + 1; | |
449 } | |
450 } | |
451 assert(total_len > 0, "empty sysclasspath not allowed"); | |
452 | |
453 // Copy the _items to a single string. | |
6197 | 454 char* cp = NEW_C_HEAP_ARRAY(char, total_len, mtInternal); |
0 | 455 char* cp_tmp = cp; |
456 for (i = 0; i < _scp_nitems; ++i) { | |
457 if (_items[i] != NULL) { | |
458 memcpy(cp_tmp, _items[i], lengths[i]); | |
459 cp_tmp += lengths[i]; | |
460 *cp_tmp++ = separator; | |
461 } | |
462 } | |
463 *--cp_tmp = '\0'; // Replace the extra separator. | |
464 return cp; | |
465 } | |
466 | |
467 // Note: path must be c-heap-allocated (or NULL); it is freed if non-null. | |
468 char* | |
469 SysClassPath::add_to_path(const char* path, const char* str, bool prepend) { | |
470 char *cp; | |
471 | |
472 assert(str != NULL, "just checking"); | |
473 if (path == NULL) { | |
474 size_t len = strlen(str) + 1; | |
6197 | 475 cp = NEW_C_HEAP_ARRAY(char, len, mtInternal); |
0 | 476 memcpy(cp, str, len); // copy the trailing null |
477 } else { | |
478 const char separator = *os::path_separator(); | |
479 size_t old_len = strlen(path); | |
480 size_t str_len = strlen(str); | |
481 size_t len = old_len + str_len + 2; | |
482 | |
483 if (prepend) { | |
6197 | 484 cp = NEW_C_HEAP_ARRAY(char, len, mtInternal); |
0 | 485 char* cp_tmp = cp; |
486 memcpy(cp_tmp, str, str_len); | |
487 cp_tmp += str_len; | |
488 *cp_tmp = separator; | |
489 memcpy(++cp_tmp, path, old_len + 1); // copy the trailing null | |
6197 | 490 FREE_C_HEAP_ARRAY(char, path, mtInternal); |
0 | 491 } else { |
6197 | 492 cp = REALLOC_C_HEAP_ARRAY(char, path, len, mtInternal); |
0 | 493 char* cp_tmp = cp + old_len; |
494 *cp_tmp = separator; | |
495 memcpy(++cp_tmp, str, str_len + 1); // copy the trailing null | |
496 } | |
497 } | |
498 return cp; | |
499 } | |
500 | |
501 // Scan the directory and append any jar or zip files found to path. | |
502 // Note: path must be c-heap-allocated (or NULL); it is freed if non-null. | |
503 char* SysClassPath::add_jars_to_path(char* path, const char* directory) { | |
504 DIR* dir = os::opendir(directory); | |
505 if (dir == NULL) return path; | |
506 | |
507 char dir_sep[2] = { '\0', '\0' }; | |
508 size_t directory_len = strlen(directory); | |
509 const char fileSep = *os::file_separator(); | |
510 if (directory[directory_len - 1] != fileSep) dir_sep[0] = fileSep; | |
511 | |
512 /* Scan the directory for jars/zips, appending them to path. */ | |
513 struct dirent *entry; | |
6197 | 514 char *dbuf = NEW_C_HEAP_ARRAY(char, os::readdir_buf_size(directory), mtInternal); |
0 | 515 while ((entry = os::readdir(dir, (dirent *) dbuf)) != NULL) { |
516 const char* name = entry->d_name; | |
517 const char* ext = name + strlen(name) - 4; | |
518 bool isJarOrZip = ext > name && | |
519 (os::file_name_strcmp(ext, ".jar") == 0 || | |
520 os::file_name_strcmp(ext, ".zip") == 0); | |
521 if (isJarOrZip) { | |
6197 | 522 char* jarpath = NEW_C_HEAP_ARRAY(char, directory_len + 2 + strlen(name), mtInternal); |
0 | 523 sprintf(jarpath, "%s%s%s", directory, dir_sep, name); |
524 path = add_to_path(path, jarpath, false); | |
6197 | 525 FREE_C_HEAP_ARRAY(char, jarpath, mtInternal); |
0 | 526 } |
527 } | |
6197 | 528 FREE_C_HEAP_ARRAY(char, dbuf, mtInternal); |
0 | 529 os::closedir(dir); |
530 return path; | |
531 } | |
532 | |
533 // Parses a memory size specification string. | |
489
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534 static bool atomull(const char *s, julong* result) { |
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535 julong n = 0; |
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536 int args_read = sscanf(s, os::julong_format_specifier(), &n); |
0 | 537 if (args_read != 1) { |
538 return false; | |
539 } | |
540 while (*s != '\0' && isdigit(*s)) { | |
541 s++; | |
542 } | |
543 // 4705540: illegal if more characters are found after the first non-digit | |
544 if (strlen(s) > 1) { | |
545 return false; | |
546 } | |
547 switch (*s) { | |
548 case 'T': case 't': | |
549 *result = n * G * K; | |
489
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550 // Check for overflow. |
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551 if (*result/((julong)G * K) != n) return false; |
0 | 552 return true; |
553 case 'G': case 'g': | |
554 *result = n * G; | |
489
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555 if (*result/G != n) return false; |
0 | 556 return true; |
557 case 'M': case 'm': | |
558 *result = n * M; | |
489
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559 if (*result/M != n) return false; |
0 | 560 return true; |
561 case 'K': case 'k': | |
562 *result = n * K; | |
489
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563 if (*result/K != n) return false; |
0 | 564 return true; |
565 case '\0': | |
566 *result = n; | |
567 return true; | |
568 default: | |
569 return false; | |
570 } | |
571 } | |
572 | |
489
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573 Arguments::ArgsRange Arguments::check_memory_size(julong size, julong min_size) { |
0 | 574 if (size < min_size) return arg_too_small; |
575 // Check that size will fit in a size_t (only relevant on 32-bit) | |
489
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576 if (size > max_uintx) return arg_too_big; |
0 | 577 return arg_in_range; |
578 } | |
579 | |
580 // Describe an argument out of range error | |
581 void Arguments::describe_range_error(ArgsRange errcode) { | |
582 switch(errcode) { | |
583 case arg_too_big: | |
584 jio_fprintf(defaultStream::error_stream(), | |
585 "The specified size exceeds the maximum " | |
586 "representable size.\n"); | |
587 break; | |
588 case arg_too_small: | |
589 case arg_unreadable: | |
590 case arg_in_range: | |
591 // do nothing for now | |
592 break; | |
593 default: | |
594 ShouldNotReachHere(); | |
595 } | |
596 } | |
597 | |
598 static bool set_bool_flag(char* name, bool value, FlagValueOrigin origin) { | |
599 return CommandLineFlags::boolAtPut(name, &value, origin); | |
600 } | |
601 | |
602 static bool set_fp_numeric_flag(char* name, char* value, FlagValueOrigin origin) { | |
603 double v; | |
604 if (sscanf(value, "%lf", &v) != 1) { | |
605 return false; | |
606 } | |
607 | |
608 if (CommandLineFlags::doubleAtPut(name, &v, origin)) { | |
609 return true; | |
610 } | |
611 return false; | |
612 } | |
613 | |
614 static bool set_numeric_flag(char* name, char* value, FlagValueOrigin origin) { | |
489
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615 julong v; |
0 | 616 intx intx_v; |
617 bool is_neg = false; | |
489
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618 // Check the sign first since atomull() parses only unsigned values. |
0 | 619 if (*value == '-') { |
620 if (!CommandLineFlags::intxAt(name, &intx_v)) { | |
621 return false; | |
622 } | |
623 value++; | |
624 is_neg = true; | |
625 } | |
489
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626 if (!atomull(value, &v)) { |
0 | 627 return false; |
628 } | |
629 intx_v = (intx) v; | |
630 if (is_neg) { | |
631 intx_v = -intx_v; | |
632 } | |
633 if (CommandLineFlags::intxAtPut(name, &intx_v, origin)) { | |
634 return true; | |
635 } | |
636 uintx uintx_v = (uintx) v; | |
637 if (!is_neg && CommandLineFlags::uintxAtPut(name, &uintx_v, origin)) { | |
638 return true; | |
639 } | |
1064 | 640 uint64_t uint64_t_v = (uint64_t) v; |
641 if (!is_neg && CommandLineFlags::uint64_tAtPut(name, &uint64_t_v, origin)) { | |
642 return true; | |
643 } | |
0 | 644 return false; |
645 } | |
646 | |
647 static bool set_string_flag(char* name, const char* value, FlagValueOrigin origin) { | |
648 if (!CommandLineFlags::ccstrAtPut(name, &value, origin)) return false; | |
649 // Contract: CommandLineFlags always returns a pointer that needs freeing. | |
6197 | 650 FREE_C_HEAP_ARRAY(char, value, mtInternal); |
0 | 651 return true; |
652 } | |
653 | |
654 static bool append_to_string_flag(char* name, const char* new_value, FlagValueOrigin origin) { | |
655 const char* old_value = ""; | |
656 if (!CommandLineFlags::ccstrAt(name, &old_value)) return false; | |
657 size_t old_len = old_value != NULL ? strlen(old_value) : 0; | |
658 size_t new_len = strlen(new_value); | |
659 const char* value; | |
660 char* free_this_too = NULL; | |
661 if (old_len == 0) { | |
662 value = new_value; | |
663 } else if (new_len == 0) { | |
664 value = old_value; | |
665 } else { | |
6197 | 666 char* buf = NEW_C_HEAP_ARRAY(char, old_len + 1 + new_len + 1, mtInternal); |
0 | 667 // each new setting adds another LINE to the switch: |
668 sprintf(buf, "%s\n%s", old_value, new_value); | |
669 value = buf; | |
670 free_this_too = buf; | |
671 } | |
672 (void) CommandLineFlags::ccstrAtPut(name, &value, origin); | |
673 // CommandLineFlags always returns a pointer that needs freeing. | |
6197 | 674 FREE_C_HEAP_ARRAY(char, value, mtInternal); |
0 | 675 if (free_this_too != NULL) { |
676 // CommandLineFlags made its own copy, so I must delete my own temp. buffer. | |
6197 | 677 FREE_C_HEAP_ARRAY(char, free_this_too, mtInternal); |
0 | 678 } |
679 return true; | |
680 } | |
681 | |
682 bool Arguments::parse_argument(const char* arg, FlagValueOrigin origin) { | |
683 | |
684 // range of acceptable characters spelled out for portability reasons | |
685 #define NAME_RANGE "[abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789_]" | |
686 #define BUFLEN 255 | |
687 char name[BUFLEN+1]; | |
688 char dummy; | |
689 | |
690 if (sscanf(arg, "-%" XSTR(BUFLEN) NAME_RANGE "%c", name, &dummy) == 1) { | |
691 return set_bool_flag(name, false, origin); | |
692 } | |
693 if (sscanf(arg, "+%" XSTR(BUFLEN) NAME_RANGE "%c", name, &dummy) == 1) { | |
694 return set_bool_flag(name, true, origin); | |
695 } | |
696 | |
697 char punct; | |
698 if (sscanf(arg, "%" XSTR(BUFLEN) NAME_RANGE "%c", name, &punct) == 2 && punct == '=') { | |
699 const char* value = strchr(arg, '=') + 1; | |
700 Flag* flag = Flag::find_flag(name, strlen(name)); | |
701 if (flag != NULL && flag->is_ccstr()) { | |
702 if (flag->ccstr_accumulates()) { | |
703 return append_to_string_flag(name, value, origin); | |
704 } else { | |
705 if (value[0] == '\0') { | |
706 value = NULL; | |
707 } | |
708 return set_string_flag(name, value, origin); | |
709 } | |
710 } | |
711 } | |
712 | |
713 if (sscanf(arg, "%" XSTR(BUFLEN) NAME_RANGE ":%c", name, &punct) == 2 && punct == '=') { | |
714 const char* value = strchr(arg, '=') + 1; | |
715 // -XX:Foo:=xxx will reset the string flag to the given value. | |
716 if (value[0] == '\0') { | |
717 value = NULL; | |
718 } | |
719 return set_string_flag(name, value, origin); | |
720 } | |
721 | |
722 #define SIGNED_FP_NUMBER_RANGE "[-0123456789.]" | |
723 #define SIGNED_NUMBER_RANGE "[-0123456789]" | |
724 #define NUMBER_RANGE "[0123456789]" | |
725 char value[BUFLEN + 1]; | |
726 char value2[BUFLEN + 1]; | |
727 if (sscanf(arg, "%" XSTR(BUFLEN) NAME_RANGE "=" "%" XSTR(BUFLEN) SIGNED_NUMBER_RANGE "." "%" XSTR(BUFLEN) NUMBER_RANGE "%c", name, value, value2, &dummy) == 3) { | |
728 // Looks like a floating-point number -- try again with more lenient format string | |
729 if (sscanf(arg, "%" XSTR(BUFLEN) NAME_RANGE "=" "%" XSTR(BUFLEN) SIGNED_FP_NUMBER_RANGE "%c", name, value, &dummy) == 2) { | |
730 return set_fp_numeric_flag(name, value, origin); | |
731 } | |
732 } | |
733 | |
734 #define VALUE_RANGE "[-kmgtKMGT0123456789]" | |
735 if (sscanf(arg, "%" XSTR(BUFLEN) NAME_RANGE "=" "%" XSTR(BUFLEN) VALUE_RANGE "%c", name, value, &dummy) == 2) { | |
736 return set_numeric_flag(name, value, origin); | |
737 } | |
738 | |
739 return false; | |
740 } | |
741 | |
742 void Arguments::add_string(char*** bldarray, int* count, const char* arg) { | |
743 assert(bldarray != NULL, "illegal argument"); | |
744 | |
745 if (arg == NULL) { | |
746 return; | |
747 } | |
748 | |
749 int index = *count; | |
750 | |
751 // expand the array and add arg to the last element | |
752 (*count)++; | |
753 if (*bldarray == NULL) { | |
6197 | 754 *bldarray = NEW_C_HEAP_ARRAY(char*, *count, mtInternal); |
0 | 755 } else { |
6197 | 756 *bldarray = REALLOC_C_HEAP_ARRAY(char*, *bldarray, *count, mtInternal); |
0 | 757 } |
758 (*bldarray)[index] = strdup(arg); | |
759 } | |
760 | |
761 void Arguments::build_jvm_args(const char* arg) { | |
762 add_string(&_jvm_args_array, &_num_jvm_args, arg); | |
763 } | |
764 | |
765 void Arguments::build_jvm_flags(const char* arg) { | |
766 add_string(&_jvm_flags_array, &_num_jvm_flags, arg); | |
767 } | |
768 | |
769 // utility function to return a string that concatenates all | |
770 // strings in a given char** array | |
771 const char* Arguments::build_resource_string(char** args, int count) { | |
772 if (args == NULL || count == 0) { | |
773 return NULL; | |
774 } | |
775 size_t length = strlen(args[0]) + 1; // add 1 for the null terminator | |
776 for (int i = 1; i < count; i++) { | |
777 length += strlen(args[i]) + 1; // add 1 for a space | |
778 } | |
779 char* s = NEW_RESOURCE_ARRAY(char, length); | |
780 strcpy(s, args[0]); | |
781 for (int j = 1; j < count; j++) { | |
782 strcat(s, " "); | |
783 strcat(s, args[j]); | |
784 } | |
785 return (const char*) s; | |
786 } | |
787 | |
788 void Arguments::print_on(outputStream* st) { | |
789 st->print_cr("VM Arguments:"); | |
790 if (num_jvm_flags() > 0) { | |
791 st->print("jvm_flags: "); print_jvm_flags_on(st); | |
792 } | |
793 if (num_jvm_args() > 0) { | |
794 st->print("jvm_args: "); print_jvm_args_on(st); | |
795 } | |
796 st->print_cr("java_command: %s", java_command() ? java_command() : "<unknown>"); | |
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797 if (_java_class_path != NULL) { |
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798 char* path = _java_class_path->value(); |
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799 st->print_cr("java_class_path (initial): %s", strlen(path) == 0 ? "<not set>" : path ); |
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800 } |
0 | 801 st->print_cr("Launcher Type: %s", _sun_java_launcher); |
802 } | |
803 | |
804 void Arguments::print_jvm_flags_on(outputStream* st) { | |
805 if (_num_jvm_flags > 0) { | |
806 for (int i=0; i < _num_jvm_flags; i++) { | |
807 st->print("%s ", _jvm_flags_array[i]); | |
808 } | |
809 st->print_cr(""); | |
810 } | |
811 } | |
812 | |
813 void Arguments::print_jvm_args_on(outputStream* st) { | |
814 if (_num_jvm_args > 0) { | |
815 for (int i=0; i < _num_jvm_args; i++) { | |
816 st->print("%s ", _jvm_args_array[i]); | |
817 } | |
818 st->print_cr(""); | |
819 } | |
820 } | |
821 | |
242 | 822 bool Arguments::process_argument(const char* arg, |
823 jboolean ignore_unrecognized, FlagValueOrigin origin) { | |
824 | |
825 JDK_Version since = JDK_Version(); | |
0 | 826 |
3250 | 827 if (parse_argument(arg, origin) || ignore_unrecognized) { |
828 return true; | |
0 | 829 } |
3250 | 830 |
831 const char * const argname = *arg == '+' || *arg == '-' ? arg + 1 : arg; | |
832 if (is_newly_obsolete(arg, &since)) { | |
833 char version[256]; | |
834 since.to_string(version, sizeof(version)); | |
835 warning("ignoring option %s; support was removed in %s", argname, version); | |
836 return true; | |
837 } | |
838 | |
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839 // For locked flags, report a custom error message if available. |
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840 // Otherwise, report the standard unrecognized VM option. |
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841 |
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842 Flag* locked_flag = Flag::find_flag((char*)argname, strlen(argname), true); |
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843 if (locked_flag != NULL) { |
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844 char locked_message_buf[BUFLEN]; |
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845 locked_flag->get_locked_message(locked_message_buf, BUFLEN); |
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846 if (strlen(locked_message_buf) == 0) { |
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847 jio_fprintf(defaultStream::error_stream(), |
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848 "Unrecognized VM option '%s'\n", argname); |
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849 } else { |
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850 jio_fprintf(defaultStream::error_stream(), "%s", locked_message_buf); |
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851 } |
6017 | 852 } else { |
853 jio_fprintf(defaultStream::error_stream(), | |
854 "Unrecognized VM option '%s'\n", argname); | |
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855 } |
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856 |
3250 | 857 // allow for commandline "commenting out" options like -XX:#+Verbose |
858 return arg[0] == '#'; | |
0 | 859 } |
860 | |
861 bool Arguments::process_settings_file(const char* file_name, bool should_exist, jboolean ignore_unrecognized) { | |
862 FILE* stream = fopen(file_name, "rb"); | |
863 if (stream == NULL) { | |
864 if (should_exist) { | |
865 jio_fprintf(defaultStream::error_stream(), | |
866 "Could not open settings file %s\n", file_name); | |
867 return false; | |
868 } else { | |
869 return true; | |
870 } | |
871 } | |
872 | |
873 char token[1024]; | |
874 int pos = 0; | |
875 | |
876 bool in_white_space = true; | |
877 bool in_comment = false; | |
878 bool in_quote = false; | |
879 char quote_c = 0; | |
880 bool result = true; | |
881 | |
882 int c = getc(stream); | |
6901 | 883 while(c != EOF && pos < (int)(sizeof(token)-1)) { |
0 | 884 if (in_white_space) { |
885 if (in_comment) { | |
886 if (c == '\n') in_comment = false; | |
887 } else { | |
888 if (c == '#') in_comment = true; | |
889 else if (!isspace(c)) { | |
890 in_white_space = false; | |
891 token[pos++] = c; | |
892 } | |
893 } | |
894 } else { | |
895 if (c == '\n' || (!in_quote && isspace(c))) { | |
896 // token ends at newline, or at unquoted whitespace | |
897 // this allows a way to include spaces in string-valued options | |
898 token[pos] = '\0'; | |
899 logOption(token); | |
900 result &= process_argument(token, ignore_unrecognized, CONFIG_FILE); | |
901 build_jvm_flags(token); | |
902 pos = 0; | |
903 in_white_space = true; | |
904 in_quote = false; | |
905 } else if (!in_quote && (c == '\'' || c == '"')) { | |
906 in_quote = true; | |
907 quote_c = c; | |
908 } else if (in_quote && (c == quote_c)) { | |
909 in_quote = false; | |
910 } else { | |
911 token[pos++] = c; | |
912 } | |
913 } | |
914 c = getc(stream); | |
915 } | |
916 if (pos > 0) { | |
917 token[pos] = '\0'; | |
918 result &= process_argument(token, ignore_unrecognized, CONFIG_FILE); | |
919 build_jvm_flags(token); | |
920 } | |
921 fclose(stream); | |
922 return result; | |
923 } | |
924 | |
925 //============================================================================================================= | |
926 // Parsing of properties (-D) | |
927 | |
928 const char* Arguments::get_property(const char* key) { | |
929 return PropertyList_get_value(system_properties(), key); | |
930 } | |
931 | |
932 bool Arguments::add_property(const char* prop) { | |
933 const char* eq = strchr(prop, '='); | |
934 char* key; | |
935 // ns must be static--its address may be stored in a SystemProperty object. | |
936 const static char ns[1] = {0}; | |
937 char* value = (char *)ns; | |
938 | |
939 size_t key_len = (eq == NULL) ? strlen(prop) : (eq - prop); | |
6197 | 940 key = AllocateHeap(key_len + 1, mtInternal); |
0 | 941 strncpy(key, prop, key_len); |
942 key[key_len] = '\0'; | |
943 | |
944 if (eq != NULL) { | |
945 size_t value_len = strlen(prop) - key_len - 1; | |
6197 | 946 value = AllocateHeap(value_len + 1, mtInternal); |
0 | 947 strncpy(value, &prop[key_len + 1], value_len + 1); |
948 } | |
949 | |
950 if (strcmp(key, "java.compiler") == 0) { | |
951 process_java_compiler_argument(value); | |
952 FreeHeap(key); | |
953 if (eq != NULL) { | |
954 FreeHeap(value); | |
955 } | |
956 return true; | |
691 | 957 } else if (strcmp(key, "sun.java.command") == 0) { |
0 | 958 _java_command = value; |
959 | |
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960 // Record value in Arguments, but let it get passed to Java. |
691 | 961 } else if (strcmp(key, "sun.java.launcher.pid") == 0) { |
0 | 962 // launcher.pid property is private and is processed |
963 // in process_sun_java_launcher_properties(); | |
964 // the sun.java.launcher property is passed on to the java application | |
965 FreeHeap(key); | |
966 if (eq != NULL) { | |
967 FreeHeap(value); | |
968 } | |
969 return true; | |
691 | 970 } else if (strcmp(key, "java.vendor.url.bug") == 0) { |
0 | 971 // save it in _java_vendor_url_bug, so JVM fatal error handler can access |
972 // its value without going through the property list or making a Java call. | |
973 _java_vendor_url_bug = value; | |
691 | 974 } else if (strcmp(key, "sun.boot.library.path") == 0) { |
975 PropertyList_unique_add(&_system_properties, key, value, true); | |
976 return true; | |
0 | 977 } |
978 // Create new property and add at the end of the list | |
979 PropertyList_unique_add(&_system_properties, key, value); | |
980 return true; | |
981 } | |
982 | |
983 //=========================================================================================================== | |
984 // Setting int/mixed/comp mode flags | |
985 | |
986 void Arguments::set_mode_flags(Mode mode) { | |
987 // Set up default values for all flags. | |
988 // If you add a flag to any of the branches below, | |
989 // add a default value for it here. | |
990 set_java_compiler(false); | |
991 _mode = mode; | |
992 | |
993 // Ensure Agent_OnLoad has the correct initial values. | |
994 // This may not be the final mode; mode may change later in onload phase. | |
995 PropertyList_unique_add(&_system_properties, "java.vm.info", | |
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996 (char*)VM_Version::vm_info_string(), false); |
0 | 997 |
998 UseInterpreter = true; | |
999 UseCompiler = true; | |
1000 UseLoopCounter = true; | |
1001 | |
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1002 #ifndef ZERO |
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1003 // Turn these off for mixed and comp. Leave them on for Zero. |
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1004 if (FLAG_IS_DEFAULT(UseFastAccessorMethods)) { |
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1005 UseFastAccessorMethods = (mode == _int); |
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1006 } |
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1007 if (FLAG_IS_DEFAULT(UseFastEmptyMethods)) { |
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1008 UseFastEmptyMethods = (mode == _int); |
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1009 } |
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1010 #endif |
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1011 |
0 | 1012 // Default values may be platform/compiler dependent - |
1013 // use the saved values | |
1014 ClipInlining = Arguments::_ClipInlining; | |
1015 AlwaysCompileLoopMethods = Arguments::_AlwaysCompileLoopMethods; | |
1016 UseOnStackReplacement = Arguments::_UseOnStackReplacement; | |
1017 BackgroundCompilation = Arguments::_BackgroundCompilation; | |
1018 | |
1019 // Change from defaults based on mode | |
1020 switch (mode) { | |
1021 default: | |
1022 ShouldNotReachHere(); | |
1023 break; | |
1024 case _int: | |
1025 UseCompiler = false; | |
1026 UseLoopCounter = false; | |
1027 AlwaysCompileLoopMethods = false; | |
1028 UseOnStackReplacement = false; | |
1029 break; | |
1030 case _mixed: | |
1031 // same as default | |
1032 break; | |
1033 case _comp: | |
1034 UseInterpreter = false; | |
1035 BackgroundCompilation = false; | |
1036 ClipInlining = false; | |
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1037 // Be much more aggressive in tiered mode with -Xcomp and exercise C2 more. |
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1038 // We will first compile a level 3 version (C1 with full profiling), then do one invocation of it and |
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1039 // compile a level 4 (C2) and then continue executing it. |
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1040 if (TieredCompilation) { |
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1041 Tier3InvokeNotifyFreqLog = 0; |
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1042 Tier4InvocationThreshold = 0; |
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1043 } |
0 | 1044 break; |
1045 } | |
1046 } | |
1047 | |
1048 // Conflict: required to use shared spaces (-Xshare:on), but | |
1049 // incompatible command line options were chosen. | |
1050 | |
1051 static void no_shared_spaces() { | |
1052 if (RequireSharedSpaces) { | |
1053 jio_fprintf(defaultStream::error_stream(), | |
1054 "Class data sharing is inconsistent with other specified options.\n"); | |
1055 vm_exit_during_initialization("Unable to use shared archive.", NULL); | |
1056 } else { | |
1057 FLAG_SET_DEFAULT(UseSharedSpaces, false); | |
1058 } | |
1059 } | |
1060 | |
1783 | 1061 void Arguments::set_tiered_flags() { |
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1062 // With tiered, set default policy to AdvancedThresholdPolicy, which is 3. |
1783 | 1063 if (FLAG_IS_DEFAULT(CompilationPolicyChoice)) { |
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1064 FLAG_SET_DEFAULT(CompilationPolicyChoice, 3); |
1783 | 1065 } |
1066 if (CompilationPolicyChoice < 2) { | |
1067 vm_exit_during_initialization( | |
1068 "Incompatible compilation policy selected", NULL); | |
1069 } | |
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1070 // Increase the code cache size - tiered compiles a lot more. |
1783 | 1071 if (FLAG_IS_DEFAULT(ReservedCodeCacheSize)) { |
1072 FLAG_SET_DEFAULT(ReservedCodeCacheSize, ReservedCodeCacheSize * 2); | |
1073 } | |
1074 } | |
1075 | |
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1076 #if INCLUDE_ALL_GCS |
4838 | 1077 static void disable_adaptive_size_policy(const char* collector_name) { |
1078 if (UseAdaptiveSizePolicy) { | |
1079 if (FLAG_IS_CMDLINE(UseAdaptiveSizePolicy)) { | |
1080 warning("disabling UseAdaptiveSizePolicy; it is incompatible with %s.", | |
1081 collector_name); | |
1082 } | |
1083 FLAG_SET_DEFAULT(UseAdaptiveSizePolicy, false); | |
1084 } | |
1085 } | |
1086 | |
0 | 1087 void Arguments::set_parnew_gc_flags() { |
1064 | 1088 assert(!UseSerialGC && !UseParallelOldGC && !UseParallelGC && !UseG1GC, |
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1089 "control point invariant"); |
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1090 assert(UseParNewGC, "Error"); |
0 | 1091 |
4838 | 1092 // Turn off AdaptiveSizePolicy for parnew until it is complete. |
1093 disable_adaptive_size_policy("UseParNewGC"); | |
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1094 |
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1095 if (FLAG_IS_DEFAULT(ParallelGCThreads)) { |
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1096 FLAG_SET_DEFAULT(ParallelGCThreads, Abstract_VM_Version::parallel_worker_threads()); |
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1097 assert(ParallelGCThreads > 0, "We should always have at least one thread by default"); |
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1098 } else if (ParallelGCThreads == 0) { |
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1099 jio_fprintf(defaultStream::error_stream(), |
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1100 "The ParNew GC can not be combined with -XX:ParallelGCThreads=0\n"); |
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1101 vm_exit(1); |
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1102 } |
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1103 |
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1104 // By default YoungPLABSize and OldPLABSize are set to 4096 and 1024 respectively, |
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1105 // these settings are default for Parallel Scavenger. For ParNew+Tenured configuration |
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1106 // we set them to 1024 and 1024. |
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1107 // See CR 6362902. |
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1108 if (FLAG_IS_DEFAULT(YoungPLABSize)) { |
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1109 FLAG_SET_DEFAULT(YoungPLABSize, (intx)1024); |
0 | 1110 } |
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1111 if (FLAG_IS_DEFAULT(OldPLABSize)) { |
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1112 FLAG_SET_DEFAULT(OldPLABSize, (intx)1024); |
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1113 } |
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1114 |
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1115 // AlwaysTenure flag should make ParNew promote all at first collection. |
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1116 // See CR 6362902. |
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1117 if (AlwaysTenure) { |
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1118 FLAG_SET_CMDLINE(uintx, MaxTenuringThreshold, 0); |
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1119 } |
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1120 // When using compressed oops, we use local overflow stacks, |
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1121 // rather than using a global overflow list chained through |
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1122 // the klass word of the object's pre-image. |
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1123 if (UseCompressedOops && !ParGCUseLocalOverflow) { |
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1124 if (!FLAG_IS_DEFAULT(ParGCUseLocalOverflow)) { |
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1125 warning("Forcing +ParGCUseLocalOverflow: needed if using compressed references"); |
0 | 1126 } |
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1127 FLAG_SET_DEFAULT(ParGCUseLocalOverflow, true); |
0 | 1128 } |
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1129 assert(ParGCUseLocalOverflow || !UseCompressedOops, "Error"); |
0 | 1130 } |
1131 | |
1132 // Adjust some sizes to suit CMS and/or ParNew needs; these work well on | |
1133 // sparc/solaris for certain applications, but would gain from | |
1134 // further optimization and tuning efforts, and would almost | |
1135 // certainly gain from analysis of platform and environment. | |
1136 void Arguments::set_cms_and_parnew_gc_flags() { | |
1064 | 1137 assert(!UseSerialGC && !UseParallelOldGC && !UseParallelGC, "Error"); |
10
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1138 assert(UseConcMarkSweepGC, "CMS is expected to be on here"); |
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1139 |
0 | 1140 // If we are using CMS, we prefer to UseParNewGC, |
1141 // unless explicitly forbidden. | |
342
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1142 if (FLAG_IS_DEFAULT(UseParNewGC)) { |
10
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1143 FLAG_SET_ERGO(bool, UseParNewGC, true); |
0 | 1144 } |
1145 | |
6854
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1146 // Turn off AdaptiveSizePolicy by default for cms until it is complete. |
4838 | 1147 disable_adaptive_size_policy("UseConcMarkSweepGC"); |
0 | 1148 |
1149 // In either case, adjust ParallelGCThreads and/or UseParNewGC | |
1150 // as needed. | |
10
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1151 if (UseParNewGC) { |
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1152 set_parnew_gc_flags(); |
0 | 1153 } |
1154 | |
2368
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1155 // MaxHeapSize is aligned down in collectorPolicy |
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1156 size_t max_heap = align_size_down(MaxHeapSize, |
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1157 CardTableRS::ct_max_alignment_constraint()); |
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1158 |
0 | 1159 // Now make adjustments for CMS |
2368
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1160 intx tenuring_default = (intx)6; |
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1161 size_t young_gen_per_worker = CMSYoungGenPerWorker; |
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1162 |
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1163 // Preferred young gen size for "short" pauses: |
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1164 // upper bound depends on # of threads and NewRatio. |
0 | 1165 const uintx parallel_gc_threads = |
1166 (ParallelGCThreads == 0 ? 1 : ParallelGCThreads); | |
1167 const size_t preferred_max_new_size_unaligned = | |
2368
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1168 MIN2(max_heap/(NewRatio+1), ScaleForWordSize(young_gen_per_worker * parallel_gc_threads)); |
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1169 size_t preferred_max_new_size = |
0 | 1170 align_size_up(preferred_max_new_size_unaligned, os::vm_page_size()); |
1171 | |
1172 // Unless explicitly requested otherwise, size young gen | |
2368
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1173 // for "short" pauses ~ CMSYoungGenPerWorker*ParallelGCThreads |
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1174 |
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1175 // If either MaxNewSize or NewRatio is set on the command line, |
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1176 // assume the user is trying to set the size of the young gen. |
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1177 if (FLAG_IS_DEFAULT(MaxNewSize) && FLAG_IS_DEFAULT(NewRatio)) { |
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1178 |
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1179 // Set MaxNewSize to our calculated preferred_max_new_size unless |
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1180 // NewSize was set on the command line and it is larger than |
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1181 // preferred_max_new_size. |
0 | 1182 if (!FLAG_IS_DEFAULT(NewSize)) { // NewSize explicitly set at command-line |
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1183 FLAG_SET_ERGO(uintx, MaxNewSize, MAX2(NewSize, preferred_max_new_size)); |
0 | 1184 } else { |
13
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1185 FLAG_SET_ERGO(uintx, MaxNewSize, preferred_max_new_size); |
0 | 1186 } |
1064 | 1187 if (PrintGCDetails && Verbose) { |
13
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1188 // Too early to use gclog_or_tty |
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1189 tty->print_cr("CMS ergo set MaxNewSize: " SIZE_FORMAT, MaxNewSize); |
886
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1190 } |
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1191 |
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1192 // Code along this path potentially sets NewSize and OldSize |
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1193 |
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1194 assert(max_heap >= InitialHeapSize, "Error"); |
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1195 assert(max_heap >= NewSize, "Error"); |
0 | 1196 |
1064 | 1197 if (PrintGCDetails && Verbose) { |
13
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1198 // Too early to use gclog_or_tty |
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1199 tty->print_cr("CMS set min_heap_size: " SIZE_FORMAT |
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1200 " initial_heap_size: " SIZE_FORMAT |
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1201 " max_heap: " SIZE_FORMAT, |
1064 | 1202 min_heap_size(), InitialHeapSize, max_heap); |
13
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1203 } |
2368
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1204 size_t min_new = preferred_max_new_size; |
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1205 if (FLAG_IS_CMDLINE(NewSize)) { |
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1206 min_new = NewSize; |
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1207 } |
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1208 if (max_heap > min_new && min_heap_size() > min_new) { |
0 | 1209 // Unless explicitly requested otherwise, make young gen |
1210 // at least min_new, and at most preferred_max_new_size. | |
1211 if (FLAG_IS_DEFAULT(NewSize)) { | |
13
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1212 FLAG_SET_ERGO(uintx, NewSize, MAX2(NewSize, min_new)); |
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1213 FLAG_SET_ERGO(uintx, NewSize, MIN2(preferred_max_new_size, NewSize)); |
1064 | 1214 if (PrintGCDetails && Verbose) { |
13
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1215 // Too early to use gclog_or_tty |
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1216 tty->print_cr("CMS ergo set NewSize: " SIZE_FORMAT, NewSize); |
13
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1217 } |
0 | 1218 } |
1219 // Unless explicitly requested otherwise, size old gen | |
2368
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1220 // so it's NewRatio x of NewSize. |
0 | 1221 if (FLAG_IS_DEFAULT(OldSize)) { |
1222 if (max_heap > NewSize) { | |
2368
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1223 FLAG_SET_ERGO(uintx, OldSize, MIN2(NewRatio*NewSize, max_heap - NewSize)); |
1064 | 1224 if (PrintGCDetails && Verbose) { |
13
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1225 // Too early to use gclog_or_tty |
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1226 tty->print_cr("CMS ergo set OldSize: " SIZE_FORMAT, OldSize); |
13
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1227 } |
0 | 1228 } |
1229 } | |
1230 } | |
1231 } | |
1232 // Unless explicitly requested otherwise, definitely | |
1233 // promote all objects surviving "tenuring_default" scavenges. | |
1234 if (FLAG_IS_DEFAULT(MaxTenuringThreshold) && | |
1235 FLAG_IS_DEFAULT(SurvivorRatio)) { | |
6818 | 1236 FLAG_SET_ERGO(uintx, MaxTenuringThreshold, tenuring_default); |
0 | 1237 } |
1238 // If we decided above (or user explicitly requested) | |
1239 // `promote all' (via MaxTenuringThreshold := 0), | |
1240 // prefer minuscule survivor spaces so as not to waste | |
1241 // space for (non-existent) survivors | |
1242 if (FLAG_IS_DEFAULT(SurvivorRatio) && MaxTenuringThreshold == 0) { | |
13
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1243 FLAG_SET_ERGO(intx, SurvivorRatio, MAX2((intx)1024, SurvivorRatio)); |
0 | 1244 } |
1245 // If OldPLABSize is set and CMSParPromoteBlocksToClaim is not, | |
1246 // set CMSParPromoteBlocksToClaim equal to OldPLABSize. | |
1247 // This is done in order to make ParNew+CMS configuration to work | |
1248 // with YoungPLABSize and OldPLABSize options. | |
1249 // See CR 6362902. | |
1250 if (!FLAG_IS_DEFAULT(OldPLABSize)) { | |
1251 if (FLAG_IS_DEFAULT(CMSParPromoteBlocksToClaim)) { | |
13
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1252 // OldPLABSize is not the default value but CMSParPromoteBlocksToClaim |
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1253 // is. In this situtation let CMSParPromoteBlocksToClaim follow |
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1254 // the value (either from the command line or ergonomics) of |
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1255 // OldPLABSize. Following OldPLABSize is an ergonomics decision. |
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1256 FLAG_SET_ERGO(uintx, CMSParPromoteBlocksToClaim, OldPLABSize); |
1145
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1257 } else { |
0 | 1258 // OldPLABSize and CMSParPromoteBlocksToClaim are both set. |
1259 // CMSParPromoteBlocksToClaim is a collector-specific flag, so | |
1260 // we'll let it to take precedence. | |
1261 jio_fprintf(defaultStream::error_stream(), | |
886
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1262 "Both OldPLABSize and CMSParPromoteBlocksToClaim" |
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1263 " options are specified for the CMS collector." |
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1264 " CMSParPromoteBlocksToClaim will take precedence.\n"); |
0 | 1265 } |
1266 } | |
1145
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1267 if (!FLAG_IS_DEFAULT(ResizeOldPLAB) && !ResizeOldPLAB) { |
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1268 // OldPLAB sizing manually turned off: Use a larger default setting, |
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1269 // unless it was manually specified. This is because a too-low value |
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1270 // will slow down scavenges. |
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1271 if (FLAG_IS_DEFAULT(CMSParPromoteBlocksToClaim)) { |
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1272 FLAG_SET_ERGO(uintx, CMSParPromoteBlocksToClaim, 50); // default value before 6631166 |
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1273 } |
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1274 } |
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1275 // Overwrite OldPLABSize which is the variable we will internally use everywhere. |
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1276 FLAG_SET_ERGO(uintx, OldPLABSize, CMSParPromoteBlocksToClaim); |
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1277 // If either of the static initialization defaults have changed, note this |
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1278 // modification. |
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1279 if (!FLAG_IS_DEFAULT(CMSParPromoteBlocksToClaim) || !FLAG_IS_DEFAULT(OldPLABWeight)) { |
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1280 CFLS_LAB::modify_initialization(OldPLABSize, OldPLABWeight); |
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1281 } |
1284 | 1282 if (PrintGCDetails && Verbose) { |
1283 tty->print_cr("MarkStackSize: %uk MarkStackSizeMax: %uk", | |
1284 MarkStackSize / K, MarkStackSizeMax / K); | |
1285 tty->print_cr("ConcGCThreads: %u", ConcGCThreads); | |
1286 } | |
0 | 1287 } |
8001
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1288 #endif // INCLUDE_ALL_GCS |
0 | 1289 |
1571
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1290 void set_object_alignment() { |
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1291 // Object alignment. |
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1292 assert(is_power_of_2(ObjectAlignmentInBytes), "ObjectAlignmentInBytes must be power of 2"); |
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1293 MinObjAlignmentInBytes = ObjectAlignmentInBytes; |
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1294 assert(MinObjAlignmentInBytes >= HeapWordsPerLong * HeapWordSize, "ObjectAlignmentInBytes value is too small"); |
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1295 MinObjAlignment = MinObjAlignmentInBytes / HeapWordSize; |
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1296 assert(MinObjAlignmentInBytes == MinObjAlignment * HeapWordSize, "ObjectAlignmentInBytes value is incorrect"); |
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1297 MinObjAlignmentInBytesMask = MinObjAlignmentInBytes - 1; |
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1298 |
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1299 LogMinObjAlignmentInBytes = exact_log2(ObjectAlignmentInBytes); |
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1300 LogMinObjAlignment = LogMinObjAlignmentInBytes - LogHeapWordSize; |
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1301 |
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1302 // Oop encoding heap max |
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1303 OopEncodingHeapMax = (uint64_t(max_juint) + 1) << LogMinObjAlignmentInBytes; |
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1304 |
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1305 #if INCLUDE_ALL_GCS |
1571
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1306 // Set CMS global values |
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1307 CompactibleFreeListSpace::set_cms_values(); |
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1308 #endif // INCLUDE_ALL_GCS |
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1309 } |
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1310 |
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1311 bool verify_object_alignment() { |
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1312 // Object alignment. |
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1313 if (!is_power_of_2(ObjectAlignmentInBytes)) { |
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1314 jio_fprintf(defaultStream::error_stream(), |
1829
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1315 "error: ObjectAlignmentInBytes=%d must be power of 2\n", |
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1316 (int)ObjectAlignmentInBytes); |
1571
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1317 return false; |
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1318 } |
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1319 if ((int)ObjectAlignmentInBytes < BytesPerLong) { |
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1320 jio_fprintf(defaultStream::error_stream(), |
1829
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1321 "error: ObjectAlignmentInBytes=%d must be greater or equal %d\n", |
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1322 (int)ObjectAlignmentInBytes, BytesPerLong); |
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1323 return false; |
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|
1324 } |
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1325 // It does not make sense to have big object alignment |
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1326 // since a space lost due to alignment will be greater |
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1327 // then a saved space from compressed oops. |
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1328 if ((int)ObjectAlignmentInBytes > 256) { |
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1329 jio_fprintf(defaultStream::error_stream(), |
7461
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1330 "error: ObjectAlignmentInBytes=%d must not be greater than 256\n", |
1829
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1331 (int)ObjectAlignmentInBytes); |
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1332 return false; |
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1333 } |
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1334 // In case page size is very small. |
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1335 if ((int)ObjectAlignmentInBytes >= os::vm_page_size()) { |
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1336 jio_fprintf(defaultStream::error_stream(), |
7461
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1337 "error: ObjectAlignmentInBytes=%d must be less than page size %d\n", |
1829
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1338 (int)ObjectAlignmentInBytes, os::vm_page_size()); |
1571
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1339 return false; |
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1340 } |
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1341 return true; |
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1342 } |
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1343 |
135
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1344 inline uintx max_heap_for_compressed_oops() { |
1963 | 1345 // Avoid sign flip. |
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1346 if (OopEncodingHeapMax < ClassMetaspaceSize + os::vm_page_size()) { |
1963 | 1347 return 0; |
1348 } | |
6725
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1349 LP64_ONLY(return OopEncodingHeapMax - ClassMetaspaceSize - os::vm_page_size()); |
1064 | 1350 NOT_LP64(ShouldNotReachHere(); return 0); |
135
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1351 } |
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1352 |
0 | 1353 bool Arguments::should_auto_select_low_pause_collector() { |
1354 if (UseAutoGCSelectPolicy && | |
1355 !FLAG_IS_DEFAULT(MaxGCPauseMillis) && | |
1356 (MaxGCPauseMillis <= AutoGCSelectPauseMillis)) { | |
1357 if (PrintGCDetails) { | |
1358 // Cannot use gclog_or_tty yet. | |
1359 tty->print_cr("Automatic selection of the low pause collector" | |
1360 " based on pause goal of %d (ms)", MaxGCPauseMillis); | |
1361 } | |
1362 return true; | |
1363 } | |
1364 return false; | |
1365 } | |
1366 | |
1367 void Arguments::set_ergonomics_flags() { | |
1368 | |
4946 | 1369 if (os::is_server_class_machine()) { |
0 | 1370 // If no other collector is requested explicitly, |
1371 // let the VM select the collector based on | |
1372 // machine class and automatic selection policy. | |
1373 if (!UseSerialGC && | |
1374 !UseConcMarkSweepGC && | |
342
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1375 !UseG1GC && |
0 | 1376 !UseParNewGC && |
1377 FLAG_IS_DEFAULT(UseParallelGC)) { | |
1378 if (should_auto_select_low_pause_collector()) { | |
1379 FLAG_SET_ERGO(bool, UseConcMarkSweepGC, true); | |
1380 } else { | |
1381 FLAG_SET_ERGO(bool, UseParallelGC, true); | |
1382 } | |
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1383 } |
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1384 // Shared spaces work fine with other GCs but causes bytecode rewriting |
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1385 // to be disabled, which hurts interpreter performance and decreases |
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1386 // server performance. On server class machines, keep the default |
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1387 // off unless it is asked for. Future work: either add bytecode rewriting |
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1388 // at link time, or rewrite bytecodes in non-shared methods. |
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1389 if (!DumpSharedSpaces && !RequireSharedSpaces) { |
0 | 1390 no_shared_spaces(); |
1391 } | |
1392 } | |
113
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1393 |
1010 | 1394 #ifndef ZERO |
113
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1395 #ifdef _LP64 |
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1396 // Check that UseCompressedOops can be set with the max heap size allocated |
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1397 // by ergonomics. |
187 | 1398 if (MaxHeapSize <= max_heap_for_compressed_oops()) { |
1783 | 1399 #if !defined(COMPILER1) || defined(TIERED) |
2228 | 1400 if (FLAG_IS_DEFAULT(UseCompressedOops)) { |
932 | 1401 FLAG_SET_ERGO(bool, UseCompressedOops, true); |
113
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1402 } |
1060 | 1403 #endif |
325
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1404 #ifdef _WIN64 |
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1405 if (UseLargePages && UseCompressedOops) { |
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1406 // Cannot allocate guard pages for implicit checks in indexed addressing |
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1407 // mode, when large pages are specified on windows. |
642
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1408 // This flag could be switched ON if narrow oop base address is set to 0, |
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1409 // see code in Universe::initialize_heap(). |
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1410 Universe::set_narrow_oop_use_implicit_null_checks(false); |
325
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1411 } |
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1412 #endif // _WIN64 |
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1413 } else { |
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1414 if (UseCompressedOops && !FLAG_IS_DEFAULT(UseCompressedOops)) { |
344 | 1415 warning("Max heap size too large for Compressed Oops"); |
113
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1416 FLAG_SET_DEFAULT(UseCompressedOops, false); |
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1417 FLAG_SET_DEFAULT(UseCompressedKlassPointers, false); |
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1418 } |
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1419 } |
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1420 // UseCompressedOops must be on for UseCompressedKlassPointers to be on. |
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1421 if (!UseCompressedOops) { |
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1422 if (UseCompressedKlassPointers) { |
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1423 warning("UseCompressedKlassPointers requires UseCompressedOops"); |
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1424 } |
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1425 FLAG_SET_DEFAULT(UseCompressedKlassPointers, false); |
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1426 } else { |
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1427 // Turn on UseCompressedKlassPointers too |
6848
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1428 if (FLAG_IS_DEFAULT(UseCompressedKlassPointers)) { |
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1429 FLAG_SET_ERGO(bool, UseCompressedKlassPointers, true); |
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1430 } |
6736
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1431 // Set the ClassMetaspaceSize to something that will not need to be |
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1432 // expanded, since it cannot be expanded. |
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1433 if (UseCompressedKlassPointers && FLAG_IS_DEFAULT(ClassMetaspaceSize)) { |
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1434 // 100,000 classes seems like a good size, so 100M assumes around 1K |
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1435 // per klass. The vtable and oopMap is embedded so we don't have a fixed |
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1436 // size per klass. Eventually, this will be parameterized because it |
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1437 // would also be useful to determine the optimal size of the |
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1438 // systemDictionary. |
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1439 FLAG_SET_ERGO(uintx, ClassMetaspaceSize, 100*M); |
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1440 } |
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1441 } |
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1442 // Also checks that certain machines are slower with compressed oops |
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1443 // in vm_version initialization code. |
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1444 #endif // _LP64 |
1010 | 1445 #endif // !ZERO |
0 | 1446 } |
1447 | |
1448 void Arguments::set_parallel_gc_flags() { | |
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1449 assert(UseParallelGC || UseParallelOldGC, "Error"); |
4879 | 1450 // Enable ParallelOld unless it was explicitly disabled (cmd line or rc file). |
1451 if (FLAG_IS_DEFAULT(UseParallelOldGC)) { | |
1452 FLAG_SET_DEFAULT(UseParallelOldGC, true); | |
0 | 1453 } |
4879 | 1454 FLAG_SET_DEFAULT(UseParallelGC, true); |
0 | 1455 |
1456 // If no heap maximum was requested explicitly, use some reasonable fraction | |
1457 // of the physical memory, up to a maximum of 1GB. | |
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1458 FLAG_SET_DEFAULT(ParallelGCThreads, |
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1459 Abstract_VM_Version::parallel_worker_threads()); |
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1460 if (ParallelGCThreads == 0) { |
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1461 jio_fprintf(defaultStream::error_stream(), |
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1462 "The Parallel GC can not be combined with -XX:ParallelGCThreads=0\n"); |
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1463 vm_exit(1); |
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1464 } |
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1465 |
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1466 |
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1467 // If InitialSurvivorRatio or MinSurvivorRatio were not specified, but the |
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1468 // SurvivorRatio has been set, reset their default values to SurvivorRatio + |
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1469 // 2. By doing this we make SurvivorRatio also work for Parallel Scavenger. |
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1470 // See CR 6362902 for details. |
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1471 if (!FLAG_IS_DEFAULT(SurvivorRatio)) { |
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1472 if (FLAG_IS_DEFAULT(InitialSurvivorRatio)) { |
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1473 FLAG_SET_DEFAULT(InitialSurvivorRatio, SurvivorRatio + 2); |
0 | 1474 } |
7471
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1475 if (FLAG_IS_DEFAULT(MinSurvivorRatio)) { |
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1476 FLAG_SET_DEFAULT(MinSurvivorRatio, SurvivorRatio + 2); |
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1477 } |
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1478 } |
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1479 |
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1480 if (UseParallelOldGC) { |
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1481 // Par compact uses lower default values since they are treated as |
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1482 // minimums. These are different defaults because of the different |
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1483 // interpretation and are not ergonomically set. |
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1484 if (FLAG_IS_DEFAULT(MarkSweepDeadRatio)) { |
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1485 FLAG_SET_DEFAULT(MarkSweepDeadRatio, 1); |
0 | 1486 } |
1487 } | |
1488 } | |
1489 | |
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1490 void Arguments::set_g1_gc_flags() { |
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1491 assert(UseG1GC, "Error"); |
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1492 #ifdef COMPILER1 |
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1493 FastTLABRefill = false; |
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1494 #endif |
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1495 FLAG_SET_DEFAULT(ParallelGCThreads, |
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1496 Abstract_VM_Version::parallel_worker_threads()); |
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1497 if (ParallelGCThreads == 0) { |
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1498 FLAG_SET_DEFAULT(ParallelGCThreads, |
751 | 1499 Abstract_VM_Version::parallel_worker_threads()); |
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1500 } |
751 | 1501 |
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1502 // MarkStackSize will be set (if it hasn't been set by the user) |
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1503 // when concurrent marking is initialized. |
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1504 // Its value will be based upon the number of parallel marking threads. |
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1505 // But we do set the maximum mark stack size here. |
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1506 if (FLAG_IS_DEFAULT(MarkStackSizeMax)) { |
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1507 FLAG_SET_DEFAULT(MarkStackSizeMax, 128 * TASKQUEUE_SIZE); |
1284 | 1508 } |
1356 | 1509 |
1510 if (FLAG_IS_DEFAULT(GCTimeRatio) || GCTimeRatio == 0) { | |
1511 // In G1, we want the default GC overhead goal to be higher than | |
1512 // say in PS. So we set it here to 10%. Otherwise the heap might | |
1513 // be expanded more aggressively than we would like it to. In | |
1514 // fact, even 10% seems to not be high enough in some cases | |
1515 // (especially small GC stress tests that the main thing they do | |
1516 // is allocation). We might consider increase it further. | |
1517 FLAG_SET_DEFAULT(GCTimeRatio, 9); | |
1518 } | |
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1519 |
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1520 if (PrintGCDetails && Verbose) { |
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1521 tty->print_cr("MarkStackSize: %uk MarkStackSizeMax: %uk", |
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1522 MarkStackSize / K, MarkStackSizeMax / K); |
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1523 tty->print_cr("ConcGCThreads: %u", ConcGCThreads); |
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1524 } |
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1525 } |
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1526 |
1064 | 1527 void Arguments::set_heap_size() { |
1528 if (!FLAG_IS_DEFAULT(DefaultMaxRAMFraction)) { | |
1529 // Deprecated flag | |
1530 FLAG_SET_CMDLINE(uintx, MaxRAMFraction, DefaultMaxRAMFraction); | |
1531 } | |
1532 | |
1533 const julong phys_mem = | |
1534 FLAG_IS_DEFAULT(MaxRAM) ? MIN2(os::physical_memory(), (julong)MaxRAM) | |
1535 : (julong)MaxRAM; | |
1536 | |
1537 // If the maximum heap size has not been set with -Xmx, | |
1538 // then set it as fraction of the size of physical memory, | |
1539 // respecting the maximum and minimum sizes of the heap. | |
342
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1540 if (FLAG_IS_DEFAULT(MaxHeapSize)) { |
1064 | 1541 julong reasonable_max = phys_mem / MaxRAMFraction; |
1542 | |
1543 if (phys_mem <= MaxHeapSize * MinRAMFraction) { | |
1544 // Small physical memory, so use a minimum fraction of it for the heap | |
1545 reasonable_max = phys_mem / MinRAMFraction; | |
1546 } else { | |
1547 // Not-small physical memory, so require a heap at least | |
1548 // as large as MaxHeapSize | |
1549 reasonable_max = MAX2(reasonable_max, (julong)MaxHeapSize); | |
1550 } | |
1551 if (!FLAG_IS_DEFAULT(ErgoHeapSizeLimit) && ErgoHeapSizeLimit != 0) { | |
1552 // Limit the heap size to ErgoHeapSizeLimit | |
1553 reasonable_max = MIN2(reasonable_max, (julong)ErgoHeapSizeLimit); | |
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1554 } |
1064 | 1555 if (UseCompressedOops) { |
1556 // Limit the heap size to the maximum possible when using compressed oops | |
1963 | 1557 julong max_coop_heap = (julong)max_heap_for_compressed_oops(); |
1558 if (HeapBaseMinAddress + MaxHeapSize < max_coop_heap) { | |
1559 // Heap should be above HeapBaseMinAddress to get zero based compressed oops | |
1560 // but it should be not less than default MaxHeapSize. | |
1561 max_coop_heap -= HeapBaseMinAddress; | |
1562 } | |
1563 reasonable_max = MIN2(reasonable_max, max_coop_heap); | |
1064 | 1564 } |
1565 reasonable_max = os::allocatable_physical_memory(reasonable_max); | |
1566 | |
1567 if (!FLAG_IS_DEFAULT(InitialHeapSize)) { | |
1568 // An initial heap size was specified on the command line, | |
1569 // so be sure that the maximum size is consistent. Done | |
1570 // after call to allocatable_physical_memory because that | |
1571 // method might reduce the allocation size. | |
1572 reasonable_max = MAX2(reasonable_max, (julong)InitialHeapSize); | |
1573 } | |
1574 | |
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1575 if (PrintGCDetails && Verbose) { |
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1576 // Cannot use gclog_or_tty yet. |
1064 | 1577 tty->print_cr(" Maximum heap size " SIZE_FORMAT, reasonable_max); |
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1578 } |
1064 | 1579 FLAG_SET_ERGO(uintx, MaxHeapSize, (uintx)reasonable_max); |
1580 } | |
1581 | |
1582 // If the initial_heap_size has not been set with InitialHeapSize | |
1583 // or -Xms, then set it as fraction of the size of physical memory, | |
1584 // respecting the maximum and minimum sizes of the heap. | |
1585 if (FLAG_IS_DEFAULT(InitialHeapSize)) { | |
1074
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1586 julong reasonable_minimum = (julong)(OldSize + NewSize); |
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1587 |
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1588 reasonable_minimum = MIN2(reasonable_minimum, (julong)MaxHeapSize); |
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1589 |
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1590 reasonable_minimum = os::allocatable_physical_memory(reasonable_minimum); |
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1591 |
1064 | 1592 julong reasonable_initial = phys_mem / InitialRAMFraction; |
1593 | |
1074
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1594 reasonable_initial = MAX2(reasonable_initial, reasonable_minimum); |
1064 | 1595 reasonable_initial = MIN2(reasonable_initial, (julong)MaxHeapSize); |
1596 | |
1597 reasonable_initial = os::allocatable_physical_memory(reasonable_initial); | |
1598 | |
1599 if (PrintGCDetails && Verbose) { | |
1600 // Cannot use gclog_or_tty yet. | |
1601 tty->print_cr(" Initial heap size " SIZE_FORMAT, (uintx)reasonable_initial); | |
1074
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1602 tty->print_cr(" Minimum heap size " SIZE_FORMAT, (uintx)reasonable_minimum); |
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1603 } |
1064 | 1604 FLAG_SET_ERGO(uintx, InitialHeapSize, (uintx)reasonable_initial); |
1074
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1605 set_min_heap_size((uintx)reasonable_minimum); |
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1606 } |
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1607 } |
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1608 |
0 | 1609 // This must be called after ergonomics because we want bytecode rewriting |
1610 // if the server compiler is used, or if UseSharedSpaces is disabled. | |
1611 void Arguments::set_bytecode_flags() { | |
1612 // Better not attempt to store into a read-only space. | |
1613 if (UseSharedSpaces) { | |
1614 FLAG_SET_DEFAULT(RewriteBytecodes, false); | |
1615 FLAG_SET_DEFAULT(RewriteFrequentPairs, false); | |
1616 } | |
1617 | |
1618 if (!RewriteBytecodes) { | |
1619 FLAG_SET_DEFAULT(RewriteFrequentPairs, false); | |
1620 } | |
1621 } | |
1622 | |
1623 // Aggressive optimization flags -XX:+AggressiveOpts | |
1624 void Arguments::set_aggressive_opts_flags() { | |
17
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1625 #ifdef COMPILER2 |
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1626 if (AggressiveOpts || !FLAG_IS_DEFAULT(AutoBoxCacheMax)) { |
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1627 if (FLAG_IS_DEFAULT(EliminateAutoBox)) { |
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1628 FLAG_SET_DEFAULT(EliminateAutoBox, true); |
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1629 } |
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1630 if (FLAG_IS_DEFAULT(AutoBoxCacheMax)) { |
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1631 FLAG_SET_DEFAULT(AutoBoxCacheMax, 20000); |
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6395208: Elide autoboxing for calls to HashMap.get(int) and HashMap.get(long)
never
parents:
0
diff
changeset
|
1632 } |
ff5961f4c095
6395208: Elide autoboxing for calls to HashMap.get(int) and HashMap.get(long)
never
parents:
0
diff
changeset
|
1633 |
ff5961f4c095
6395208: Elide autoboxing for calls to HashMap.get(int) and HashMap.get(long)
never
parents:
0
diff
changeset
|
1634 // 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
|
1635 char buffer[1024]; |
513
2328d1d3f8cf
6781583: Hotspot build fails on linux 64 bit platform with gcc 4.3.2
xlu
parents:
489
diff
changeset
|
1636 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)
never
parents:
0
diff
changeset
|
1637 add_property(buffer); |
ff5961f4c095
6395208: Elide autoboxing for calls to HashMap.get(int) and HashMap.get(long)
never
parents:
0
diff
changeset
|
1638 } |
416
b6cfd754403d
6649622: HotSpot Biased locking needs tuning on latest CPUs
never
parents:
363
diff
changeset
|
1639 if (AggressiveOpts && FLAG_IS_DEFAULT(BiasedLockingStartupDelay)) { |
b6cfd754403d
6649622: HotSpot Biased locking needs tuning on latest CPUs
never
parents:
363
diff
changeset
|
1640 FLAG_SET_DEFAULT(BiasedLockingStartupDelay, 500); |
b6cfd754403d
6649622: HotSpot Biased locking needs tuning on latest CPUs
never
parents:
363
diff
changeset
|
1641 } |
17
ff5961f4c095
6395208: Elide autoboxing for calls to HashMap.get(int) and HashMap.get(long)
never
parents:
0
diff
changeset
|
1642 #endif |
ff5961f4c095
6395208: Elide autoboxing for calls to HashMap.get(int) and HashMap.get(long)
never
parents:
0
diff
changeset
|
1643 |
0 | 1644 if (AggressiveOpts) { |
61 | 1645 // Sample flag setting code |
1646 // if (FLAG_IS_DEFAULT(EliminateZeroing)) { | |
1647 // FLAG_SET_DEFAULT(EliminateZeroing, true); | |
1648 // } | |
0 | 1649 } |
1650 } | |
1651 | |
1652 //=========================================================================================================== | |
1653 // Parsing of java.compiler property | |
1654 | |
1655 void Arguments::process_java_compiler_argument(char* arg) { | |
1656 // For backwards compatibility, Djava.compiler=NONE or "" | |
1657 // causes us to switch to -Xint mode UNLESS -Xdebug | |
1658 // is also specified. | |
1659 if (strlen(arg) == 0 || strcasecmp(arg, "NONE") == 0) { | |
1660 set_java_compiler(true); // "-Djava.compiler[=...]" most recently seen. | |
1661 } | |
1662 } | |
1663 | |
1664 void Arguments::process_java_launcher_argument(const char* launcher, void* extra_info) { | |
1665 _sun_java_launcher = strdup(launcher); | |
2302
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
1666 if (strcmp("gamma", _sun_java_launcher) == 0) { |
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
1667 _created_by_gamma_launcher = true; |
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
1668 } |
0 | 1669 } |
1670 | |
1671 bool Arguments::created_by_java_launcher() { | |
1672 assert(_sun_java_launcher != NULL, "property must have value"); | |
1673 return strcmp(DEFAULT_JAVA_LAUNCHER, _sun_java_launcher) != 0; | |
1674 } | |
1675 | |
2302
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
1676 bool Arguments::created_by_gamma_launcher() { |
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
1677 return _created_by_gamma_launcher; |
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
1678 } |
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
1679 |
0 | 1680 //=========================================================================================================== |
1681 // Parsing of main arguments | |
1682 | |
1244
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
1683 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
|
1684 uintx max, const char* name) { |
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
1685 // Returns true iff value is in the inclusive interval [min..max] |
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
1686 // false, otherwise. |
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
1687 if (val >= min && val <= max) { |
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
1688 return true; |
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
1689 } |
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
1690 jio_fprintf(defaultStream::error_stream(), |
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
1691 "%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
|
1692 " and " UINTX_FORMAT "\n", |
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
1693 name, val, min, max); |
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
1694 return false; |
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
1695 } |
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
1696 |
1744
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
ptisnovs
parents:
1681
diff
changeset
|
1697 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
parents:
2362
diff
changeset
|
1698 // 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
ptisnovs
parents:
1681
diff
changeset
|
1699 // false, otherwise. |
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
ptisnovs
parents:
1681
diff
changeset
|
1700 if (val >= min ) { |
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
ptisnovs
parents:
1681
diff
changeset
|
1701 return true; |
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
ptisnovs
parents:
1681
diff
changeset
|
1702 } |
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
ptisnovs
parents:
1681
diff
changeset
|
1703 jio_fprintf(defaultStream::error_stream(), |
2366
1fb790245268
6820066: Check that -XX:ParGCArrayScanChunk has a value larger than zero.
jwilhelm
parents:
2362
diff
changeset
|
1704 "%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
ptisnovs
parents:
1681
diff
changeset
|
1705 name, val, min); |
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
ptisnovs
parents:
1681
diff
changeset
|
1706 return false; |
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
ptisnovs
parents:
1681
diff
changeset
|
1707 } |
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
ptisnovs
parents:
1681
diff
changeset
|
1708 |
0 | 1709 bool Arguments::verify_percentage(uintx value, const char* name) { |
1710 if (value <= 100) { | |
1711 return true; | |
1712 } | |
1713 jio_fprintf(defaultStream::error_stream(), | |
1714 "%s of " UINTX_FORMAT " is invalid; must be between 0 and 100\n", | |
1715 name, value); | |
1716 return false; | |
1717 } | |
1718 | |
1064 | 1719 static void force_serial_gc() { |
0 | 1720 FLAG_SET_DEFAULT(UseSerialGC, true); |
1721 FLAG_SET_DEFAULT(UseParNewGC, false); | |
1722 FLAG_SET_DEFAULT(UseConcMarkSweepGC, false); | |
945
68ef3fdcdb76
6872136: CMS: confusing message may be printed when a collector is switched off implicitly
ysr
parents:
932
diff
changeset
|
1723 FLAG_SET_DEFAULT(CMSIncrementalMode, false); // special CMS suboption |
0 | 1724 FLAG_SET_DEFAULT(UseParallelGC, false); |
1725 FLAG_SET_DEFAULT(UseParallelOldGC, false); | |
342
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
135
diff
changeset
|
1726 FLAG_SET_DEFAULT(UseG1GC, false); |
0 | 1727 } |
1728 | |
1729 static bool verify_serial_gc_flags() { | |
1730 return (UseSerialGC && | |
945
68ef3fdcdb76
6872136: CMS: confusing message may be printed when a collector is switched off implicitly
ysr
parents:
932
diff
changeset
|
1731 !(UseParNewGC || (UseConcMarkSweepGC || CMSIncrementalMode) || UseG1GC || |
342
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
135
diff
changeset
|
1732 UseParallelGC || UseParallelOldGC)); |
0 | 1733 } |
1734 | |
3767
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3349
diff
changeset
|
1735 // check if do gclog rotation |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3349
diff
changeset
|
1736 // +UseGCLogFileRotation is a must, |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3349
diff
changeset
|
1737 // 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
|
1738 // NumberOfGCLogFiles is 0, or GCLogFileSize is 0 |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3349
diff
changeset
|
1739 void check_gclog_consistency() { |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3349
diff
changeset
|
1740 if (UseGCLogFileRotation) { |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3349
diff
changeset
|
1741 if ((Arguments::gc_log_filename() == NULL) || |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3349
diff
changeset
|
1742 (NumberOfGCLogFiles == 0) || |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3349
diff
changeset
|
1743 (GCLogFileSize == 0)) { |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3349
diff
changeset
|
1744 jio_fprintf(defaultStream::output_stream(), |
3769
ef2d1b8f2dd4
7051430: CMS: ongoing CMS cycle should terminate abruptly to allow prompt JVM termination at exit
ysr
parents:
3767
diff
changeset
|
1745 "To enable GC log rotation, use -Xloggc:<filename> -XX:+UseGCLogFileRotation -XX:NumberOfGCLogFiles=<num_of_files> -XX:GCLogFileSize=<num_of_size>\n" |
3767
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3349
diff
changeset
|
1746 "where num_of_file > 0 and num_of_size > 0\n" |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3349
diff
changeset
|
1747 "GC log rotation is turned off\n"); |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3349
diff
changeset
|
1748 UseGCLogFileRotation = false; |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3349
diff
changeset
|
1749 } |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3349
diff
changeset
|
1750 } |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3349
diff
changeset
|
1751 |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3349
diff
changeset
|
1752 if (UseGCLogFileRotation && GCLogFileSize < 8*K) { |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3349
diff
changeset
|
1753 FLAG_SET_CMDLINE(uintx, GCLogFileSize, 8*K); |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3349
diff
changeset
|
1754 jio_fprintf(defaultStream::output_stream(), |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3349
diff
changeset
|
1755 "GCLogFileSize changed to minimum 8K\n"); |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3349
diff
changeset
|
1756 } |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3349
diff
changeset
|
1757 } |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3349
diff
changeset
|
1758 |
10
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1759 // Check consistency of GC selection |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1760 bool Arguments::check_gc_consistency() { |
3767
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3349
diff
changeset
|
1761 check_gclog_consistency(); |
10
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1762 bool status = true; |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1763 // Ensure that the user has not selected conflicting sets |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1764 // of collectors. [Note: this check is merely a user convenience; |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1765 // collectors over-ride each other so that only a non-conflicting |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1766 // set is selected; however what the user gets is not what they |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1767 // may have expected from the combination they asked for. It's |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1768 // better to reduce user confusion by not allowing them to |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1769 // select conflicting combinations. |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1770 uint i = 0; |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1771 if (UseSerialGC) i++; |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1772 if (UseConcMarkSweepGC || UseParNewGC) i++; |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1773 if (UseParallelGC || UseParallelOldGC) i++; |
845
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
751
diff
changeset
|
1774 if (UseG1GC) i++; |
10
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1775 if (i > 1) { |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1776 jio_fprintf(defaultStream::error_stream(), |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1777 "Conflicting collector combinations in option list; " |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1778 "please refer to the release notes for the combinations " |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1779 "allowed\n"); |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1780 status = false; |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1781 } |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1782 |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1783 return status; |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1784 } |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1785 |
7452
e0ab18eafbde
8003820: Deprecate untested and rarely used GC combinations
brutisso
parents:
7451
diff
changeset
|
1786 void Arguments::check_deprecated_gcs() { |
e0ab18eafbde
8003820: Deprecate untested and rarely used GC combinations
brutisso
parents:
7451
diff
changeset
|
1787 if (UseConcMarkSweepGC && !UseParNewGC) { |
e0ab18eafbde
8003820: Deprecate untested and rarely used GC combinations
brutisso
parents:
7451
diff
changeset
|
1788 warning("Using the DefNew young collector with the CMS collector is deprecated " |
e0ab18eafbde
8003820: Deprecate untested and rarely used GC combinations
brutisso
parents:
7451
diff
changeset
|
1789 "and will likely be removed in a future release"); |
e0ab18eafbde
8003820: Deprecate untested and rarely used GC combinations
brutisso
parents:
7451
diff
changeset
|
1790 } |
e0ab18eafbde
8003820: Deprecate untested and rarely used GC combinations
brutisso
parents:
7451
diff
changeset
|
1791 |
e0ab18eafbde
8003820: Deprecate untested and rarely used GC combinations
brutisso
parents:
7451
diff
changeset
|
1792 if (UseParNewGC && !UseConcMarkSweepGC) { |
e0ab18eafbde
8003820: Deprecate untested and rarely used GC combinations
brutisso
parents:
7451
diff
changeset
|
1793 // !UseConcMarkSweepGC means that we are using serial old gc. Unfortunately we don't |
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1794 // set up UseSerialGC properly, so that can't be used in the check here. |
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1795 warning("Using the ParNew young collector with the Serial old collector is deprecated " |
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1796 "and will likely be removed in a future release"); |
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1797 } |
7453 | 1798 |
1799 if (CMSIncrementalMode) { | |
1800 warning("Using incremental CMS is deprecated and will likely be removed in a future release"); | |
1801 } | |
7452
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1802 } |
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1803 |
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1804 // Check stack pages settings |
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1805 bool Arguments::check_stack_pages() |
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1806 { |
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1807 bool status = true; |
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1808 status = status && verify_min_value(StackYellowPages, 1, "StackYellowPages"); |
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1809 status = status && verify_min_value(StackRedPages, 1, "StackRedPages"); |
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1810 // greater stack shadow pages can't generate instruction to bang stack |
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1811 status = status && verify_interval(StackShadowPages, 1, 50, "StackShadowPages"); |
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1812 return status; |
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1813 } |
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1814 |
0 | 1815 // Check the consistency of vm_init_args |
1816 bool Arguments::check_vm_args_consistency() { | |
1817 // Method for adding checks for flag consistency. | |
1818 // The intent is to warn the user of all possible conflicts, | |
1819 // before returning an error. | |
1820 // Note: Needs platform-dependent factoring. | |
1821 bool status = true; | |
1822 | |
1823 #if ( (defined(COMPILER2) && defined(SPARC))) | |
1824 // NOTE: The call to VM_Version_init depends on the fact that VM_Version_init | |
1825 // on sparc doesn't require generation of a stub as is the case on, e.g., | |
1826 // x86. Normally, VM_Version_init must be called from init_globals in | |
1827 // init.cpp, which is called by the initial java thread *after* arguments | |
1828 // have been parsed. VM_Version_init gets called twice on sparc. | |
1829 extern void VM_Version_init(); | |
1830 VM_Version_init(); | |
1831 if (!VM_Version::has_v9()) { | |
1832 jio_fprintf(defaultStream::error_stream(), | |
1833 "V8 Machine detected, Server requires V9\n"); | |
1834 status = false; | |
1835 } | |
1836 #endif /* COMPILER2 && SPARC */ | |
1837 | |
1838 // Allow both -XX:-UseStackBanging and -XX:-UseBoundThreads in non-product | |
1839 // builds so the cost of stack banging can be measured. | |
1840 #if (defined(PRODUCT) && defined(SOLARIS)) | |
1841 if (!UseBoundThreads && !UseStackBanging) { | |
1842 jio_fprintf(defaultStream::error_stream(), | |
1843 "-UseStackBanging conflicts with -UseBoundThreads\n"); | |
1844 | |
1845 status = false; | |
1846 } | |
1847 #endif | |
1848 | |
1849 if (TLABRefillWasteFraction == 0) { | |
1850 jio_fprintf(defaultStream::error_stream(), | |
1851 "TLABRefillWasteFraction should be a denominator, " | |
1852 "not " SIZE_FORMAT "\n", | |
1853 TLABRefillWasteFraction); | |
1854 status = false; | |
1855 } | |
1856 | |
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1857 status = status && verify_percentage(AdaptiveSizePolicyWeight, |
0 | 1858 "AdaptiveSizePolicyWeight"); |
10
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1859 status = status && verify_percentage(ThresholdTolerance, "ThresholdTolerance"); |
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1860 status = status && verify_percentage(MinHeapFreeRatio, "MinHeapFreeRatio"); |
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1861 status = status && verify_percentage(MaxHeapFreeRatio, "MaxHeapFreeRatio"); |
0 | 1862 |
6982
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1863 // Divide by bucket size to prevent a large size from causing rollover when |
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1864 // calculating amount of memory needed to be allocated for the String table. |
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1865 status = status && verify_interval(StringTableSize, defaultStringTableSize, |
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1866 (max_uintx / StringTable::bucket_size()), "StringTable size"); |
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1867 |
0 | 1868 if (MinHeapFreeRatio > MaxHeapFreeRatio) { |
1869 jio_fprintf(defaultStream::error_stream(), | |
1870 "MinHeapFreeRatio (" UINTX_FORMAT ") must be less than or " | |
1871 "equal to MaxHeapFreeRatio (" UINTX_FORMAT ")\n", | |
1872 MinHeapFreeRatio, MaxHeapFreeRatio); | |
1873 status = false; | |
1874 } | |
1875 // Keeping the heap 100% free is hard ;-) so limit it to 99%. | |
1876 MinHeapFreeRatio = MIN2(MinHeapFreeRatio, (uintx) 99); | |
1877 | |
1878 if (FullGCALot && FLAG_IS_DEFAULT(MarkSweepAlwaysCompactCount)) { | |
1879 MarkSweepAlwaysCompactCount = 1; // Move objects every gc. | |
1880 } | |
1881 | |
483
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1882 if (UseParallelOldGC && ParallelOldGCSplitALot) { |
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1883 // Settings to encourage splitting. |
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1884 if (!FLAG_IS_CMDLINE(NewRatio)) { |
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1885 FLAG_SET_CMDLINE(intx, NewRatio, 2); |
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1886 } |
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1887 if (!FLAG_IS_CMDLINE(ScavengeBeforeFullGC)) { |
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1888 FLAG_SET_CMDLINE(bool, ScavengeBeforeFullGC, false); |
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1889 } |
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1890 } |
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1891 |
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1892 status = status && verify_percentage(GCHeapFreeLimit, "GCHeapFreeLimit"); |
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1893 status = status && verify_percentage(GCTimeLimit, "GCTimeLimit"); |
0 | 1894 if (GCTimeLimit == 100) { |
1895 // Turn off gc-overhead-limit-exceeded checks | |
1896 FLAG_SET_DEFAULT(UseGCOverheadLimit, false); | |
1897 } | |
1898 | |
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1899 status = status && verify_percentage(GCHeapFreeLimit, "GCHeapFreeLimit"); |
0 | 1900 |
10
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1901 status = status && check_gc_consistency(); |
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1902 status = status && check_stack_pages(); |
0 | 1903 |
1904 if (_has_alloc_profile) { | |
1905 if (UseParallelGC || UseParallelOldGC) { | |
1906 jio_fprintf(defaultStream::error_stream(), | |
1907 "error: invalid argument combination.\n" | |
1908 "Allocation profiling (-Xaprof) cannot be used together with " | |
1909 "Parallel GC (-XX:+UseParallelGC or -XX:+UseParallelOldGC).\n"); | |
1910 status = false; | |
1911 } | |
1912 if (UseConcMarkSweepGC) { | |
1913 jio_fprintf(defaultStream::error_stream(), | |
1914 "error: invalid argument combination.\n" | |
1915 "Allocation profiling (-Xaprof) cannot be used together with " | |
1916 "the CMS collector (-XX:+UseConcMarkSweepGC).\n"); | |
1917 status = false; | |
1918 } | |
1919 } | |
1920 | |
1921 if (CMSIncrementalMode) { | |
1922 if (!UseConcMarkSweepGC) { | |
1923 jio_fprintf(defaultStream::error_stream(), | |
1924 "error: invalid argument combination.\n" | |
1925 "The CMS collector (-XX:+UseConcMarkSweepGC) must be " | |
1926 "selected in order\nto use CMSIncrementalMode.\n"); | |
1927 status = false; | |
1928 } else { | |
10
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|
1929 status = status && verify_percentage(CMSIncrementalDutyCycle, |
0 | 1930 "CMSIncrementalDutyCycle"); |
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1931 status = status && verify_percentage(CMSIncrementalDutyCycleMin, |
0 | 1932 "CMSIncrementalDutyCycleMin"); |
10
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1933 status = status && verify_percentage(CMSIncrementalSafetyFactor, |
0 | 1934 "CMSIncrementalSafetyFactor"); |
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1935 status = status && verify_percentage(CMSIncrementalOffset, |
0 | 1936 "CMSIncrementalOffset"); |
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1937 status = status && verify_percentage(CMSExpAvgFactor, |
0 | 1938 "CMSExpAvgFactor"); |
1939 // If it was not set on the command line, set | |
1940 // CMSInitiatingOccupancyFraction to 1 so icms can initiate cycles early. | |
1941 if (CMSInitiatingOccupancyFraction < 0) { | |
1942 FLAG_SET_DEFAULT(CMSInitiatingOccupancyFraction, 1); | |
1943 } | |
1944 } | |
1945 } | |
1946 | |
1947 // CMS space iteration, which FLSVerifyAllHeapreferences entails, | |
1948 // insists that we hold the requisite locks so that the iteration is | |
1949 // MT-safe. For the verification at start-up and shut-down, we don't | |
1950 // yet have a good way of acquiring and releasing these locks, | |
1951 // which are not visible at the CollectedHeap level. We want to | |
1952 // be able to acquire these locks and then do the iteration rather | |
1953 // than just disable the lock verification. This will be fixed under | |
1954 // bug 4788986. | |
1955 if (UseConcMarkSweepGC && FLSVerifyAllHeapReferences) { | |
1956 if (VerifyGCStartAt == 0) { | |
1957 warning("Heap verification at start-up disabled " | |
1958 "(due to current incompatibility with FLSVerifyAllHeapReferences)"); | |
1959 VerifyGCStartAt = 1; // Disable verification at start-up | |
1960 } | |
1961 if (VerifyBeforeExit) { | |
1962 warning("Heap verification at shutdown disabled " | |
1963 "(due to current incompatibility with FLSVerifyAllHeapReferences)"); | |
1964 VerifyBeforeExit = false; // Disable verification at shutdown | |
1965 } | |
1966 } | |
1967 | |
1968 // Note: only executed in non-PRODUCT mode | |
1969 if (!UseAsyncConcMarkSweepGC && | |
1970 (ExplicitGCInvokesConcurrent || | |
1971 ExplicitGCInvokesConcurrentAndUnloadsClasses)) { | |
1972 jio_fprintf(defaultStream::error_stream(), | |
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1973 "error: +ExplicitGCInvokesConcurrent[AndUnloadsClasses] conflicts" |
0 | 1974 " with -UseAsyncConcMarkSweepGC"); |
1975 status = false; | |
1976 } | |
1977 | |
2366
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1978 status = status && verify_min_value(ParGCArrayScanChunk, 1, "ParGCArrayScanChunk"); |
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1979 |
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1980 #if INCLUDE_ALL_GCS |
1283
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1981 if (UseG1GC) { |
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1982 status = status && verify_percentage(InitiatingHeapOccupancyPercent, |
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1983 "InitiatingHeapOccupancyPercent"); |
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|
1984 status = status && verify_min_value(G1RefProcDrainInterval, 1, |
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|
1985 "G1RefProcDrainInterval"); |
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|
1986 status = status && verify_min_value((intx)G1ConcMarkStepDurationMillis, 1, |
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|
1987 "G1ConcMarkStepDurationMillis"); |
1283
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|
1988 } |
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|
1989 #endif // INCLUDE_ALL_GCS |
1283
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|
1990 |
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|
1991 status = status && verify_interval(RefDiscoveryPolicy, |
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|
1992 ReferenceProcessor::DiscoveryPolicyMin, |
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6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
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|
1993 ReferenceProcessor::DiscoveryPolicyMax, |
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|
1994 "RefDiscoveryPolicy"); |
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|
1995 |
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|
1996 // Limit the lower bound of this flag to 1 as it is used in a division |
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|
1997 // expression. |
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|
1998 status = status && verify_interval(TLABWasteTargetPercent, |
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1999 1, 100, "TLABWasteTargetPercent"); |
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|
2000 |
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2001 status = status && verify_object_alignment(); |
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|
2002 |
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2003 status = status && verify_min_value(ClassMetaspaceSize, 1*M, |
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|
2004 "ClassMetaspaceSize"); |
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|
2005 |
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2006 status = status && verify_interval(MarkStackSizeMax, |
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2007 1, (max_jint - 1), "MarkStackSizeMax"); |
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|
2008 |
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|
2009 #ifdef SPARC |
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|
2010 if (UseConcMarkSweepGC || UseG1GC) { |
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|
2011 // Issue a stern warning if the user has explicitly set |
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2012 // UseMemSetInBOT (it is known to cause issues), but allow |
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2013 // use for experimentation and debugging. |
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2014 if (VM_Version::is_sun4v() && UseMemSetInBOT) { |
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2015 assert(!FLAG_IS_DEFAULT(UseMemSetInBOT), "Error"); |
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2016 warning("Experimental flag -XX:+UseMemSetInBOT is known to cause instability" |
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2017 " on sun4v; please understand that you are using at your own risk!"); |
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2018 } |
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2019 } |
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2020 #endif // SPARC |
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2021 |
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2022 if (PrintNMTStatistics) { |
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2023 #if INCLUDE_NMT |
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2024 if (MemTracker::tracking_level() == MemTracker::NMT_off) { |
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2025 #endif // INCLUDE_NMT |
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2026 warning("PrintNMTStatistics is disabled, because native memory tracking is not enabled"); |
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2027 PrintNMTStatistics = false; |
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2028 #if INCLUDE_NMT |
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2029 } |
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2030 #endif |
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2031 } |
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2032 |
0 | 2033 return status; |
2034 } | |
2035 | |
2036 bool Arguments::is_bad_option(const JavaVMOption* option, jboolean ignore, | |
2037 const char* option_type) { | |
2038 if (ignore) return false; | |
2039 | |
2040 const char* spacer = " "; | |
2041 if (option_type == NULL) { | |
2042 option_type = ++spacer; // Set both to the empty string. | |
2043 } | |
2044 | |
2045 if (os::obsolete_option(option)) { | |
2046 jio_fprintf(defaultStream::error_stream(), | |
2047 "Obsolete %s%soption: %s\n", option_type, spacer, | |
2048 option->optionString); | |
2049 return false; | |
2050 } else { | |
2051 jio_fprintf(defaultStream::error_stream(), | |
2052 "Unrecognized %s%soption: %s\n", option_type, spacer, | |
2053 option->optionString); | |
2054 return true; | |
2055 } | |
2056 } | |
2057 | |
2058 static const char* user_assertion_options[] = { | |
2059 "-da", "-ea", "-disableassertions", "-enableassertions", 0 | |
2060 }; | |
2061 | |
2062 static const char* system_assertion_options[] = { | |
2063 "-dsa", "-esa", "-disablesystemassertions", "-enablesystemassertions", 0 | |
2064 }; | |
2065 | |
2066 // Return true if any of the strings in null-terminated array 'names' matches. | |
2067 // If tail_allowed is true, then the tail must begin with a colon; otherwise, | |
2068 // the option must match exactly. | |
2069 static bool match_option(const JavaVMOption* option, const char** names, const char** tail, | |
2070 bool tail_allowed) { | |
2071 for (/* empty */; *names != NULL; ++names) { | |
2072 if (match_option(option, *names, tail)) { | |
2073 if (**tail == '\0' || tail_allowed && **tail == ':') { | |
2074 return true; | |
2075 } | |
2076 } | |
2077 } | |
2078 return false; | |
2079 } | |
2080 | |
1284 | 2081 bool Arguments::parse_uintx(const char* value, |
2082 uintx* uintx_arg, | |
2083 uintx min_size) { | |
2084 | |
2085 // Check the sign first since atomull() parses only unsigned values. | |
2086 bool value_is_positive = !(*value == '-'); | |
2087 | |
2088 if (value_is_positive) { | |
2089 julong n; | |
2090 bool good_return = atomull(value, &n); | |
2091 if (good_return) { | |
2092 bool above_minimum = n >= min_size; | |
2093 bool value_is_too_large = n > max_uintx; | |
2094 | |
2095 if (above_minimum && !value_is_too_large) { | |
2096 *uintx_arg = n; | |
2097 return true; | |
2098 } | |
2099 } | |
2100 } | |
2101 return false; | |
2102 } | |
2103 | |
0 | 2104 Arguments::ArgsRange Arguments::parse_memory_size(const char* s, |
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2105 julong* long_arg, |
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2106 julong min_size) { |
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2107 if (!atomull(s, long_arg)) return arg_unreadable; |
0 | 2108 return check_memory_size(*long_arg, min_size); |
2109 } | |
2110 | |
2111 // Parse JavaVMInitArgs structure | |
2112 | |
2113 jint Arguments::parse_vm_init_args(const JavaVMInitArgs* args) { | |
2114 // For components of the system classpath. | |
2115 SysClassPath scp(Arguments::get_sysclasspath()); | |
2116 bool scp_assembly_required = false; | |
2117 | |
2118 // Save default settings for some mode flags | |
2119 Arguments::_AlwaysCompileLoopMethods = AlwaysCompileLoopMethods; | |
2120 Arguments::_UseOnStackReplacement = UseOnStackReplacement; | |
2121 Arguments::_ClipInlining = ClipInlining; | |
2122 Arguments::_BackgroundCompilation = BackgroundCompilation; | |
2123 | |
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2124 // Setup flags for mixed which is the default |
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2125 set_mode_flags(_mixed); |
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2126 |
0 | 2127 // Parse JAVA_TOOL_OPTIONS environment variable (if present) |
2128 jint result = parse_java_tool_options_environment_variable(&scp, &scp_assembly_required); | |
2129 if (result != JNI_OK) { | |
2130 return result; | |
2131 } | |
2132 | |
2133 // Parse JavaVMInitArgs structure passed in | |
2134 result = parse_each_vm_init_arg(args, &scp, &scp_assembly_required, COMMAND_LINE); | |
2135 if (result != JNI_OK) { | |
2136 return result; | |
2137 } | |
2138 | |
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2139 if (AggressiveOpts) { |
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2140 // Insert alt-rt.jar between user-specified bootclasspath |
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2141 // prefix and the default bootclasspath. os::set_boot_path() |
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2142 // uses meta_index_dir as the default bootclasspath directory. |
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2143 const char* altclasses_jar = "alt-rt.jar"; |
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2144 size_t altclasses_path_len = strlen(get_meta_index_dir()) + 1 + |
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2145 strlen(altclasses_jar); |
6197 | 2146 char* altclasses_path = NEW_C_HEAP_ARRAY(char, altclasses_path_len, mtInternal); |
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2147 strcpy(altclasses_path, get_meta_index_dir()); |
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2148 strcat(altclasses_path, altclasses_jar); |
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2149 scp.add_suffix_to_prefix(altclasses_path); |
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2150 scp_assembly_required = true; |
6197 | 2151 FREE_C_HEAP_ARRAY(char, altclasses_path, mtInternal); |
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2152 } |
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2153 |
5915 | 2154 if (WhiteBoxAPI) { |
2155 // Append wb.jar to bootclasspath if enabled | |
2156 const char* wb_jar = "wb.jar"; | |
2157 size_t wb_path_len = strlen(get_meta_index_dir()) + 1 + | |
2158 strlen(wb_jar); | |
6197 | 2159 char* wb_path = NEW_C_HEAP_ARRAY(char, wb_path_len, mtInternal); |
5915 | 2160 strcpy(wb_path, get_meta_index_dir()); |
2161 strcat(wb_path, wb_jar); | |
2162 scp.add_suffix(wb_path); | |
2163 scp_assembly_required = true; | |
6197 | 2164 FREE_C_HEAP_ARRAY(char, wb_path, mtInternal); |
5915 | 2165 } |
2166 | |
0 | 2167 // Parse _JAVA_OPTIONS environment variable (if present) (mimics classic VM) |
2168 result = parse_java_options_environment_variable(&scp, &scp_assembly_required); | |
2169 if (result != JNI_OK) { | |
2170 return result; | |
2171 } | |
2172 | |
2173 // Do final processing now that all arguments have been parsed | |
2174 result = finalize_vm_init_args(&scp, scp_assembly_required); | |
2175 if (result != JNI_OK) { | |
2176 return result; | |
2177 } | |
2178 | |
2179 return JNI_OK; | |
2180 } | |
2181 | |
2182 jint Arguments::parse_each_vm_init_arg(const JavaVMInitArgs* args, | |
2183 SysClassPath* scp_p, | |
2184 bool* scp_assembly_required_p, | |
2185 FlagValueOrigin origin) { | |
2186 // Remaining part of option string | |
2187 const char* tail; | |
2188 | |
2189 // iterate over arguments | |
2190 for (int index = 0; index < args->nOptions; index++) { | |
2191 bool is_absolute_path = false; // for -agentpath vs -agentlib | |
2192 | |
2193 const JavaVMOption* option = args->options + index; | |
2194 | |
2195 if (!match_option(option, "-Djava.class.path", &tail) && | |
2196 !match_option(option, "-Dsun.java.command", &tail) && | |
2197 !match_option(option, "-Dsun.java.launcher", &tail)) { | |
2198 | |
2199 // add all jvm options to the jvm_args string. This string | |
2200 // is used later to set the java.vm.args PerfData string constant. | |
2201 // the -Djava.class.path and the -Dsun.java.command options are | |
2202 // omitted from jvm_args string as each have their own PerfData | |
2203 // string constant object. | |
2204 build_jvm_args(option->optionString); | |
2205 } | |
2206 | |
2207 // -verbose:[class/gc/jni] | |
2208 if (match_option(option, "-verbose", &tail)) { | |
2209 if (!strcmp(tail, ":class") || !strcmp(tail, "")) { | |
2210 FLAG_SET_CMDLINE(bool, TraceClassLoading, true); | |
2211 FLAG_SET_CMDLINE(bool, TraceClassUnloading, true); | |
2212 } else if (!strcmp(tail, ":gc")) { | |
2213 FLAG_SET_CMDLINE(bool, PrintGC, true); | |
2214 } else if (!strcmp(tail, ":jni")) { | |
2215 FLAG_SET_CMDLINE(bool, PrintJNIResolving, true); | |
2216 } | |
2217 // -da / -ea / -disableassertions / -enableassertions | |
2218 // These accept an optional class/package name separated by a colon, e.g., | |
2219 // -da:java.lang.Thread. | |
2220 } else if (match_option(option, user_assertion_options, &tail, true)) { | |
2221 bool enable = option->optionString[1] == 'e'; // char after '-' is 'e' | |
2222 if (*tail == '\0') { | |
2223 JavaAssertions::setUserClassDefault(enable); | |
2224 } else { | |
2225 assert(*tail == ':', "bogus match by match_option()"); | |
2226 JavaAssertions::addOption(tail + 1, enable); | |
2227 } | |
2228 // -dsa / -esa / -disablesystemassertions / -enablesystemassertions | |
2229 } else if (match_option(option, system_assertion_options, &tail, false)) { | |
2230 bool enable = option->optionString[1] == 'e'; // char after '-' is 'e' | |
2231 JavaAssertions::setSystemClassDefault(enable); | |
2232 // -bootclasspath: | |
2233 } else if (match_option(option, "-Xbootclasspath:", &tail)) { | |
2234 scp_p->reset_path(tail); | |
2235 *scp_assembly_required_p = true; | |
2236 // -bootclasspath/a: | |
2237 } else if (match_option(option, "-Xbootclasspath/a:", &tail)) { | |
2238 scp_p->add_suffix(tail); | |
2239 *scp_assembly_required_p = true; | |
2240 // -bootclasspath/p: | |
2241 } else if (match_option(option, "-Xbootclasspath/p:", &tail)) { | |
2242 scp_p->add_prefix(tail); | |
2243 *scp_assembly_required_p = true; | |
2244 // -Xrun | |
2245 } else if (match_option(option, "-Xrun", &tail)) { | |
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2246 if (tail != NULL) { |
0 | 2247 const char* pos = strchr(tail, ':'); |
2248 size_t len = (pos == NULL) ? strlen(tail) : pos - tail; | |
6197 | 2249 char* name = (char*)memcpy(NEW_C_HEAP_ARRAY(char, len + 1, mtInternal), tail, len); |
0 | 2250 name[len] = '\0'; |
2251 | |
2252 char *options = NULL; | |
2253 if(pos != NULL) { | |
2254 size_t len2 = strlen(pos+1) + 1; // options start after ':'. Final zero must be copied. | |
6197 | 2255 options = (char*)memcpy(NEW_C_HEAP_ARRAY(char, len2, mtInternal), pos+1, len2); |
0 | 2256 } |
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2257 #if !INCLUDE_JVMTI |
0 | 2258 if ((strcmp(name, "hprof") == 0) || (strcmp(name, "jdwp") == 0)) { |
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2259 warning("profiling and debugging agents are not supported in this VM"); |
0 | 2260 } else |
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2261 #endif // !INCLUDE_JVMTI |
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2262 add_init_library(name, options); |
0 | 2263 } |
2264 // -agentlib and -agentpath | |
2265 } else if (match_option(option, "-agentlib:", &tail) || | |
2266 (is_absolute_path = match_option(option, "-agentpath:", &tail))) { | |
2267 if(tail != NULL) { | |
2268 const char* pos = strchr(tail, '='); | |
2269 size_t len = (pos == NULL) ? strlen(tail) : pos - tail; | |
6197 | 2270 char* name = strncpy(NEW_C_HEAP_ARRAY(char, len + 1, mtInternal), tail, len); |
0 | 2271 name[len] = '\0'; |
2272 | |
2273 char *options = NULL; | |
2274 if(pos != NULL) { | |
6197 | 2275 options = strcpy(NEW_C_HEAP_ARRAY(char, strlen(pos + 1) + 1, mtInternal), pos + 1); |
0 | 2276 } |
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2277 #if !INCLUDE_JVMTI |
0 | 2278 if ((strcmp(name, "hprof") == 0) || (strcmp(name, "jdwp") == 0)) { |
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2279 warning("profiling and debugging agents are not supported in this VM"); |
0 | 2280 } else |
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2281 #endif // !INCLUDE_JVMTI |
0 | 2282 add_init_agent(name, options, is_absolute_path); |
2283 | |
2284 } | |
2285 // -javaagent | |
2286 } else if (match_option(option, "-javaagent:", &tail)) { | |
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2287 #if !INCLUDE_JVMTI |
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2288 warning("Instrumentation agents are not supported in this VM"); |
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2289 #else |
0 | 2290 if(tail != NULL) { |
6197 | 2291 char *options = strcpy(NEW_C_HEAP_ARRAY(char, strlen(tail) + 1, mtInternal), tail); |
0 | 2292 add_init_agent("instrument", options, false); |
2293 } | |
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2294 #endif // !INCLUDE_JVMTI |
0 | 2295 // -Xnoclassgc |
2296 } else if (match_option(option, "-Xnoclassgc", &tail)) { | |
2297 FLAG_SET_CMDLINE(bool, ClassUnloading, false); | |
2298 // -Xincgc: i-CMS | |
2299 } else if (match_option(option, "-Xincgc", &tail)) { | |
2300 FLAG_SET_CMDLINE(bool, UseConcMarkSweepGC, true); | |
2301 FLAG_SET_CMDLINE(bool, CMSIncrementalMode, true); | |
2302 // -Xnoincgc: no i-CMS | |
2303 } else if (match_option(option, "-Xnoincgc", &tail)) { | |
2304 FLAG_SET_CMDLINE(bool, UseConcMarkSweepGC, false); | |
2305 FLAG_SET_CMDLINE(bool, CMSIncrementalMode, false); | |
2306 // -Xconcgc | |
2307 } else if (match_option(option, "-Xconcgc", &tail)) { | |
2308 FLAG_SET_CMDLINE(bool, UseConcMarkSweepGC, true); | |
2309 // -Xnoconcgc | |
2310 } else if (match_option(option, "-Xnoconcgc", &tail)) { | |
2311 FLAG_SET_CMDLINE(bool, UseConcMarkSweepGC, false); | |
2312 // -Xbatch | |
2313 } else if (match_option(option, "-Xbatch", &tail)) { | |
2314 FLAG_SET_CMDLINE(bool, BackgroundCompilation, false); | |
2315 // -Xmn for compatibility with other JVM vendors | |
2316 } else if (match_option(option, "-Xmn", &tail)) { | |
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2317 julong long_initial_eden_size = 0; |
0 | 2318 ArgsRange errcode = parse_memory_size(tail, &long_initial_eden_size, 1); |
2319 if (errcode != arg_in_range) { | |
2320 jio_fprintf(defaultStream::error_stream(), | |
2321 "Invalid initial eden size: %s\n", option->optionString); | |
2322 describe_range_error(errcode); | |
2323 return JNI_EINVAL; | |
2324 } | |
1064 | 2325 FLAG_SET_CMDLINE(uintx, MaxNewSize, (uintx)long_initial_eden_size); |
2326 FLAG_SET_CMDLINE(uintx, NewSize, (uintx)long_initial_eden_size); | |
0 | 2327 // -Xms |
2328 } else if (match_option(option, "-Xms", &tail)) { | |
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2329 julong long_initial_heap_size = 0; |
0 | 2330 ArgsRange errcode = parse_memory_size(tail, &long_initial_heap_size, 1); |
2331 if (errcode != arg_in_range) { | |
2332 jio_fprintf(defaultStream::error_stream(), | |
2333 "Invalid initial heap size: %s\n", option->optionString); | |
2334 describe_range_error(errcode); | |
2335 return JNI_EINVAL; | |
2336 } | |
1064 | 2337 FLAG_SET_CMDLINE(uintx, InitialHeapSize, (uintx)long_initial_heap_size); |
0 | 2338 // Currently the minimum size and the initial heap sizes are the same. |
1064 | 2339 set_min_heap_size(InitialHeapSize); |
0 | 2340 // -Xmx |
2341 } else if (match_option(option, "-Xmx", &tail)) { | |
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2342 julong long_max_heap_size = 0; |
0 | 2343 ArgsRange errcode = parse_memory_size(tail, &long_max_heap_size, 1); |
2344 if (errcode != arg_in_range) { | |
2345 jio_fprintf(defaultStream::error_stream(), | |
2346 "Invalid maximum heap size: %s\n", option->optionString); | |
2347 describe_range_error(errcode); | |
2348 return JNI_EINVAL; | |
2349 } | |
1064 | 2350 FLAG_SET_CMDLINE(uintx, MaxHeapSize, (uintx)long_max_heap_size); |
0 | 2351 // Xmaxf |
2352 } else if (match_option(option, "-Xmaxf", &tail)) { | |
2353 int maxf = (int)(atof(tail) * 100); | |
2354 if (maxf < 0 || maxf > 100) { | |
2355 jio_fprintf(defaultStream::error_stream(), | |
2356 "Bad max heap free percentage size: %s\n", | |
2357 option->optionString); | |
2358 return JNI_EINVAL; | |
2359 } else { | |
2360 FLAG_SET_CMDLINE(uintx, MaxHeapFreeRatio, maxf); | |
2361 } | |
2362 // Xminf | |
2363 } else if (match_option(option, "-Xminf", &tail)) { | |
2364 int minf = (int)(atof(tail) * 100); | |
2365 if (minf < 0 || minf > 100) { | |
2366 jio_fprintf(defaultStream::error_stream(), | |
2367 "Bad min heap free percentage size: %s\n", | |
2368 option->optionString); | |
2369 return JNI_EINVAL; | |
2370 } else { | |
2371 FLAG_SET_CMDLINE(uintx, MinHeapFreeRatio, minf); | |
2372 } | |
2373 // -Xss | |
2374 } else if (match_option(option, "-Xss", &tail)) { | |
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2375 julong long_ThreadStackSize = 0; |
0 | 2376 ArgsRange errcode = parse_memory_size(tail, &long_ThreadStackSize, 1000); |
2377 if (errcode != arg_in_range) { | |
2378 jio_fprintf(defaultStream::error_stream(), | |
2379 "Invalid thread stack size: %s\n", option->optionString); | |
2380 describe_range_error(errcode); | |
2381 return JNI_EINVAL; | |
2382 } | |
2383 // Internally track ThreadStackSize in units of 1024 bytes. | |
2384 FLAG_SET_CMDLINE(intx, ThreadStackSize, | |
2385 round_to((int)long_ThreadStackSize, K) / K); | |
2386 // -Xoss | |
2387 } else if (match_option(option, "-Xoss", &tail)) { | |
2388 // HotSpot does not have separate native and Java stacks, ignore silently for compatibility | |
2389 // -Xmaxjitcodesize | |
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2390 } else if (match_option(option, "-Xmaxjitcodesize", &tail) || |
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2391 match_option(option, "-XX:ReservedCodeCacheSize=", &tail)) { |
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2392 julong long_ReservedCodeCacheSize = 0; |
0 | 2393 ArgsRange errcode = parse_memory_size(tail, &long_ReservedCodeCacheSize, |
489
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2394 (size_t)InitialCodeCacheSize); |
0 | 2395 if (errcode != arg_in_range) { |
2396 jio_fprintf(defaultStream::error_stream(), | |
2095
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2397 "Invalid maximum code cache size: %s. Should be greater than InitialCodeCacheSize=%dK\n", |
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2398 option->optionString, InitialCodeCacheSize/K); |
0 | 2399 describe_range_error(errcode); |
2400 return JNI_EINVAL; | |
2401 } | |
2402 FLAG_SET_CMDLINE(uintx, ReservedCodeCacheSize, (uintx)long_ReservedCodeCacheSize); | |
2403 // -green | |
2404 } else if (match_option(option, "-green", &tail)) { | |
2405 jio_fprintf(defaultStream::error_stream(), | |
2406 "Green threads support not available\n"); | |
2407 return JNI_EINVAL; | |
2408 // -native | |
2409 } else if (match_option(option, "-native", &tail)) { | |
2410 // HotSpot always uses native threads, ignore silently for compatibility | |
2411 // -Xsqnopause | |
2412 } else if (match_option(option, "-Xsqnopause", &tail)) { | |
2413 // EVM option, ignore silently for compatibility | |
2414 // -Xrs | |
2415 } else if (match_option(option, "-Xrs", &tail)) { | |
2416 // Classic/EVM option, new functionality | |
2417 FLAG_SET_CMDLINE(bool, ReduceSignalUsage, true); | |
2418 } else if (match_option(option, "-Xusealtsigs", &tail)) { | |
2419 // change default internal VM signals used - lower case for back compat | |
2420 FLAG_SET_CMDLINE(bool, UseAltSigs, true); | |
2421 // -Xoptimize | |
2422 } else if (match_option(option, "-Xoptimize", &tail)) { | |
2423 // EVM option, ignore silently for compatibility | |
2424 // -Xprof | |
2425 } else if (match_option(option, "-Xprof", &tail)) { | |
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2426 #if INCLUDE_FPROF |
0 | 2427 _has_profile = true; |
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2428 #else // INCLUDE_FPROF |
0 | 2429 // do we have to exit? |
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2430 warning("Flat profiling is not supported in this VM."); |
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2431 #endif // INCLUDE_FPROF |
0 | 2432 // -Xaprof |
2433 } else if (match_option(option, "-Xaprof", &tail)) { | |
2434 _has_alloc_profile = true; | |
2435 // -Xconcurrentio | |
2436 } else if (match_option(option, "-Xconcurrentio", &tail)) { | |
2437 FLAG_SET_CMDLINE(bool, UseLWPSynchronization, true); | |
2438 FLAG_SET_CMDLINE(bool, BackgroundCompilation, false); | |
2439 FLAG_SET_CMDLINE(intx, DeferThrSuspendLoopCount, 1); | |
2440 FLAG_SET_CMDLINE(bool, UseTLAB, false); | |
2441 FLAG_SET_CMDLINE(uintx, NewSizeThreadIncrease, 16 * K); // 20Kb per thread added to new generation | |
2442 | |
2443 // -Xinternalversion | |
2444 } else if (match_option(option, "-Xinternalversion", &tail)) { | |
2445 jio_fprintf(defaultStream::output_stream(), "%s\n", | |
2446 VM_Version::internal_vm_info_string()); | |
2447 vm_exit(0); | |
2448 #ifndef PRODUCT | |
2449 // -Xprintflags | |
2450 } else if (match_option(option, "-Xprintflags", &tail)) { | |
4773 | 2451 CommandLineFlags::printFlags(tty, false); |
0 | 2452 vm_exit(0); |
2453 #endif | |
2454 // -D | |
2455 } else if (match_option(option, "-D", &tail)) { | |
2456 if (!add_property(tail)) { | |
2457 return JNI_ENOMEM; | |
2458 } | |
2459 // Out of the box management support | |
2460 if (match_option(option, "-Dcom.sun.management", &tail)) { | |
2461 FLAG_SET_CMDLINE(bool, ManagementServer, true); | |
2462 } | |
2463 // -Xint | |
2464 } else if (match_option(option, "-Xint", &tail)) { | |
2465 set_mode_flags(_int); | |
2466 // -Xmixed | |
2467 } else if (match_option(option, "-Xmixed", &tail)) { | |
2468 set_mode_flags(_mixed); | |
2469 // -Xcomp | |
2470 } else if (match_option(option, "-Xcomp", &tail)) { | |
2471 // for testing the compiler; turn off all flags that inhibit compilation | |
2472 set_mode_flags(_comp); | |
2473 | |
2474 // -Xshare:dump | |
2475 } else if (match_option(option, "-Xshare:dump", &tail)) { | |
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2476 #if defined(KERNEL) |
0 | 2477 vm_exit_during_initialization( |
2478 "Dumping a shared archive is not supported on the Kernel JVM.", NULL); | |
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2479 #elif !INCLUDE_CDS |
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2480 vm_exit_during_initialization( |
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2481 "Dumping a shared archive is not supported in this VM.", NULL); |
0 | 2482 #else |
2483 FLAG_SET_CMDLINE(bool, DumpSharedSpaces, true); | |
2484 set_mode_flags(_int); // Prevent compilation, which creates objects | |
2485 #endif | |
2486 // -Xshare:on | |
2487 } else if (match_option(option, "-Xshare:on", &tail)) { | |
2488 FLAG_SET_CMDLINE(bool, UseSharedSpaces, true); | |
2489 FLAG_SET_CMDLINE(bool, RequireSharedSpaces, true); | |
2490 // -Xshare:auto | |
2491 } else if (match_option(option, "-Xshare:auto", &tail)) { | |
2492 FLAG_SET_CMDLINE(bool, UseSharedSpaces, true); | |
2493 FLAG_SET_CMDLINE(bool, RequireSharedSpaces, false); | |
2494 // -Xshare:off | |
2495 } else if (match_option(option, "-Xshare:off", &tail)) { | |
2496 FLAG_SET_CMDLINE(bool, UseSharedSpaces, false); | |
2497 FLAG_SET_CMDLINE(bool, RequireSharedSpaces, false); | |
2498 | |
2499 // -Xverify | |
2500 } else if (match_option(option, "-Xverify", &tail)) { | |
2501 if (strcmp(tail, ":all") == 0 || strcmp(tail, "") == 0) { | |
2502 FLAG_SET_CMDLINE(bool, BytecodeVerificationLocal, true); | |
2503 FLAG_SET_CMDLINE(bool, BytecodeVerificationRemote, true); | |
2504 } else if (strcmp(tail, ":remote") == 0) { | |
2505 FLAG_SET_CMDLINE(bool, BytecodeVerificationLocal, false); | |
2506 FLAG_SET_CMDLINE(bool, BytecodeVerificationRemote, true); | |
2507 } else if (strcmp(tail, ":none") == 0) { | |
2508 FLAG_SET_CMDLINE(bool, BytecodeVerificationLocal, false); | |
2509 FLAG_SET_CMDLINE(bool, BytecodeVerificationRemote, false); | |
2510 } else if (is_bad_option(option, args->ignoreUnrecognized, "verification")) { | |
2511 return JNI_EINVAL; | |
2512 } | |
2513 // -Xdebug | |
2514 } else if (match_option(option, "-Xdebug", &tail)) { | |
2515 // note this flag has been used, then ignore | |
2516 set_xdebug_mode(true); | |
2517 // -Xnoagent | |
2518 } else if (match_option(option, "-Xnoagent", &tail)) { | |
2519 // For compatibility with classic. HotSpot refuses to load the old style agent.dll. | |
2520 } else if (match_option(option, "-Xboundthreads", &tail)) { | |
2521 // Bind user level threads to kernel threads (Solaris only) | |
2522 FLAG_SET_CMDLINE(bool, UseBoundThreads, true); | |
2523 } else if (match_option(option, "-Xloggc:", &tail)) { | |
2524 // Redirect GC output to the file. -Xloggc:<filename> | |
2525 // ostream_init_log(), when called will use this filename | |
2526 // to initialize a fileStream. | |
2527 _gc_log_filename = strdup(tail); | |
2528 FLAG_SET_CMDLINE(bool, PrintGC, true); | |
2529 FLAG_SET_CMDLINE(bool, PrintGCTimeStamps, true); | |
2530 | |
2531 // JNI hooks | |
2532 } else if (match_option(option, "-Xcheck", &tail)) { | |
2533 if (!strcmp(tail, ":jni")) { | |
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2534 #if !INCLUDE_JNI_CHECK |
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2535 warning("JNI CHECKING is not supported in this VM"); |
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2536 #else |
0 | 2537 CheckJNICalls = true; |
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2538 #endif // INCLUDE_JNI_CHECK |
0 | 2539 } else if (is_bad_option(option, args->ignoreUnrecognized, |
2540 "check")) { | |
2541 return JNI_EINVAL; | |
2542 } | |
2543 } else if (match_option(option, "vfprintf", &tail)) { | |
2544 _vfprintf_hook = CAST_TO_FN_PTR(vfprintf_hook_t, option->extraInfo); | |
2545 } else if (match_option(option, "exit", &tail)) { | |
2546 _exit_hook = CAST_TO_FN_PTR(exit_hook_t, option->extraInfo); | |
2547 } else if (match_option(option, "abort", &tail)) { | |
2548 _abort_hook = CAST_TO_FN_PTR(abort_hook_t, option->extraInfo); | |
2549 // -XX:+AggressiveHeap | |
2550 } else if (match_option(option, "-XX:+AggressiveHeap", &tail)) { | |
2551 | |
2552 // This option inspects the machine and attempts to set various | |
2553 // parameters to be optimal for long-running, memory allocation | |
2554 // intensive jobs. It is intended for machines with large | |
2555 // amounts of cpu and memory. | |
2556 | |
2557 // initHeapSize is needed since _initial_heap_size is 4 bytes on a 32 bit | |
2558 // VM, but we may not be able to represent the total physical memory | |
2559 // available (like having 8gb of memory on a box but using a 32bit VM). | |
2560 // Thus, we need to make sure we're using a julong for intermediate | |
2561 // calculations. | |
2562 julong initHeapSize; | |
2563 julong total_memory = os::physical_memory(); | |
2564 | |
2565 if (total_memory < (julong)256*M) { | |
2566 jio_fprintf(defaultStream::error_stream(), | |
2567 "You need at least 256mb of memory to use -XX:+AggressiveHeap\n"); | |
2568 vm_exit(1); | |
2569 } | |
2570 | |
2571 // The heap size is half of available memory, or (at most) | |
2572 // all of possible memory less 160mb (leaving room for the OS | |
2573 // when using ISM). This is the maximum; because adaptive sizing | |
2574 // is turned on below, the actual space used may be smaller. | |
2575 | |
2576 initHeapSize = MIN2(total_memory / (julong)2, | |
2577 total_memory - (julong)160*M); | |
2578 | |
2579 // Make sure that if we have a lot of memory we cap the 32 bit | |
2580 // process space. The 64bit VM version of this function is a nop. | |
2581 initHeapSize = os::allocatable_physical_memory(initHeapSize); | |
2582 | |
2583 if (FLAG_IS_DEFAULT(MaxHeapSize)) { | |
2584 FLAG_SET_CMDLINE(uintx, MaxHeapSize, initHeapSize); | |
1064 | 2585 FLAG_SET_CMDLINE(uintx, InitialHeapSize, initHeapSize); |
0 | 2586 // Currently the minimum size and the initial heap sizes are the same. |
1064 | 2587 set_min_heap_size(initHeapSize); |
0 | 2588 } |
2589 if (FLAG_IS_DEFAULT(NewSize)) { | |
2590 // Make the young generation 3/8ths of the total heap. | |
2591 FLAG_SET_CMDLINE(uintx, NewSize, | |
2592 ((julong)MaxHeapSize / (julong)8) * (julong)3); | |
2593 FLAG_SET_CMDLINE(uintx, MaxNewSize, NewSize); | |
2594 } | |
2595 | |
6917
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2596 #ifndef _ALLBSD_SOURCE // UseLargePages is not yet supported on BSD. |
0 | 2597 FLAG_SET_DEFAULT(UseLargePages, true); |
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2598 #endif |
0 | 2599 |
2600 // Increase some data structure sizes for efficiency | |
2601 FLAG_SET_CMDLINE(uintx, BaseFootPrintEstimate, MaxHeapSize); | |
2602 FLAG_SET_CMDLINE(bool, ResizeTLAB, false); | |
2603 FLAG_SET_CMDLINE(uintx, TLABSize, 256*K); | |
2604 | |
2605 // See the OldPLABSize comment below, but replace 'after promotion' | |
2606 // with 'after copying'. YoungPLABSize is the size of the survivor | |
2607 // space per-gc-thread buffers. The default is 4kw. | |
2608 FLAG_SET_CMDLINE(uintx, YoungPLABSize, 256*K); // Note: this is in words | |
2609 | |
2610 // OldPLABSize is the size of the buffers in the old gen that | |
2611 // UseParallelGC uses to promote live data that doesn't fit in the | |
2612 // survivor spaces. At any given time, there's one for each gc thread. | |
2613 // The default size is 1kw. These buffers are rarely used, since the | |
2614 // survivor spaces are usually big enough. For specjbb, however, there | |
2615 // are occasions when there's lots of live data in the young gen | |
2616 // and we end up promoting some of it. We don't have a definite | |
2617 // explanation for why bumping OldPLABSize helps, but the theory | |
2618 // is that a bigger PLAB results in retaining something like the | |
2619 // original allocation order after promotion, which improves mutator | |
2620 // locality. A minor effect may be that larger PLABs reduce the | |
2621 // number of PLAB allocation events during gc. The value of 8kw | |
2622 // was arrived at by experimenting with specjbb. | |
2623 FLAG_SET_CMDLINE(uintx, OldPLABSize, 8*K); // Note: this is in words | |
2624 | |
2625 // Enable parallel GC and adaptive generation sizing | |
2626 FLAG_SET_CMDLINE(bool, UseParallelGC, true); | |
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|
2627 FLAG_SET_DEFAULT(ParallelGCThreads, |
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2628 Abstract_VM_Version::parallel_worker_threads()); |
0 | 2629 |
2630 // Encourage steady state memory management | |
2631 FLAG_SET_CMDLINE(uintx, ThresholdTolerance, 100); | |
2632 | |
2633 // This appears to improve mutator locality | |
2634 FLAG_SET_CMDLINE(bool, ScavengeBeforeFullGC, false); | |
2635 | |
2636 // Get around early Solaris scheduling bug | |
2637 // (affinity vs other jobs on system) | |
2638 // but disallow DR and offlining (5008695). | |
2639 FLAG_SET_CMDLINE(bool, BindGCTaskThreadsToCPUs, true); | |
2640 | |
2641 } else if (match_option(option, "-XX:+NeverTenure", &tail)) { | |
2642 // The last option must always win. | |
2643 FLAG_SET_CMDLINE(bool, AlwaysTenure, false); | |
2644 FLAG_SET_CMDLINE(bool, NeverTenure, true); | |
2645 } else if (match_option(option, "-XX:+AlwaysTenure", &tail)) { | |
2646 // The last option must always win. | |
2647 FLAG_SET_CMDLINE(bool, NeverTenure, false); | |
2648 FLAG_SET_CMDLINE(bool, AlwaysTenure, true); | |
2649 } else if (match_option(option, "-XX:+CMSPermGenSweepingEnabled", &tail) || | |
2650 match_option(option, "-XX:-CMSPermGenSweepingEnabled", &tail)) { | |
2651 jio_fprintf(defaultStream::error_stream(), | |
2652 "Please use CMSClassUnloadingEnabled in place of " | |
2653 "CMSPermGenSweepingEnabled in the future\n"); | |
2654 } else if (match_option(option, "-XX:+UseGCTimeLimit", &tail)) { | |
2655 FLAG_SET_CMDLINE(bool, UseGCOverheadLimit, true); | |
2656 jio_fprintf(defaultStream::error_stream(), | |
2657 "Please use -XX:+UseGCOverheadLimit in place of " | |
2658 "-XX:+UseGCTimeLimit in the future\n"); | |
2659 } else if (match_option(option, "-XX:-UseGCTimeLimit", &tail)) { | |
2660 FLAG_SET_CMDLINE(bool, UseGCOverheadLimit, false); | |
2661 jio_fprintf(defaultStream::error_stream(), | |
2662 "Please use -XX:-UseGCOverheadLimit in place of " | |
2663 "-XX:-UseGCTimeLimit in the future\n"); | |
2664 // The TLE options are for compatibility with 1.3 and will be | |
2665 // removed without notice in a future release. These options | |
2666 // are not to be documented. | |
2667 } else if (match_option(option, "-XX:MaxTLERatio=", &tail)) { | |
2668 // No longer used. | |
2669 } else if (match_option(option, "-XX:+ResizeTLE", &tail)) { | |
2670 FLAG_SET_CMDLINE(bool, ResizeTLAB, true); | |
2671 } else if (match_option(option, "-XX:-ResizeTLE", &tail)) { | |
2672 FLAG_SET_CMDLINE(bool, ResizeTLAB, false); | |
2673 } else if (match_option(option, "-XX:+PrintTLE", &tail)) { | |
2674 FLAG_SET_CMDLINE(bool, PrintTLAB, true); | |
2675 } else if (match_option(option, "-XX:-PrintTLE", &tail)) { | |
2676 FLAG_SET_CMDLINE(bool, PrintTLAB, false); | |
2677 } else if (match_option(option, "-XX:TLEFragmentationRatio=", &tail)) { | |
2678 // No longer used. | |
2679 } else if (match_option(option, "-XX:TLESize=", &tail)) { | |
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2680 julong long_tlab_size = 0; |
0 | 2681 ArgsRange errcode = parse_memory_size(tail, &long_tlab_size, 1); |
2682 if (errcode != arg_in_range) { | |
2683 jio_fprintf(defaultStream::error_stream(), | |
2684 "Invalid TLAB size: %s\n", option->optionString); | |
2685 describe_range_error(errcode); | |
2686 return JNI_EINVAL; | |
2687 } | |
2688 FLAG_SET_CMDLINE(uintx, TLABSize, long_tlab_size); | |
2689 } else if (match_option(option, "-XX:TLEThreadRatio=", &tail)) { | |
2690 // No longer used. | |
2691 } else if (match_option(option, "-XX:+UseTLE", &tail)) { | |
2692 FLAG_SET_CMDLINE(bool, UseTLAB, true); | |
2693 } else if (match_option(option, "-XX:-UseTLE", &tail)) { | |
2694 FLAG_SET_CMDLINE(bool, UseTLAB, false); | |
2695 SOLARIS_ONLY( | |
2696 } else if (match_option(option, "-XX:+UsePermISM", &tail)) { | |
2697 warning("-XX:+UsePermISM is obsolete."); | |
2698 FLAG_SET_CMDLINE(bool, UseISM, true); | |
2699 } else if (match_option(option, "-XX:-UsePermISM", &tail)) { | |
2700 FLAG_SET_CMDLINE(bool, UseISM, false); | |
2701 ) | |
2702 } else if (match_option(option, "-XX:+DisplayVMOutputToStderr", &tail)) { | |
2703 FLAG_SET_CMDLINE(bool, DisplayVMOutputToStdout, false); | |
2704 FLAG_SET_CMDLINE(bool, DisplayVMOutputToStderr, true); | |
2705 } else if (match_option(option, "-XX:+DisplayVMOutputToStdout", &tail)) { | |
2706 FLAG_SET_CMDLINE(bool, DisplayVMOutputToStderr, false); | |
2707 FLAG_SET_CMDLINE(bool, DisplayVMOutputToStdout, true); | |
2708 } else if (match_option(option, "-XX:+ExtendedDTraceProbes", &tail)) { | |
4006 | 2709 #if defined(DTRACE_ENABLED) |
0 | 2710 FLAG_SET_CMDLINE(bool, ExtendedDTraceProbes, true); |
2711 FLAG_SET_CMDLINE(bool, DTraceMethodProbes, true); | |
2712 FLAG_SET_CMDLINE(bool, DTraceAllocProbes, true); | |
2713 FLAG_SET_CMDLINE(bool, DTraceMonitorProbes, true); | |
4006 | 2714 #else // defined(DTRACE_ENABLED) |
0 | 2715 jio_fprintf(defaultStream::error_stream(), |
4006 | 2716 "ExtendedDTraceProbes flag is not applicable for this configuration\n"); |
0 | 2717 return JNI_EINVAL; |
4006 | 2718 #endif // defined(DTRACE_ENABLED) |
0 | 2719 #ifdef ASSERT |
1145
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6631166: CMS: better heuristics when combatting fragmentation
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1074
diff
changeset
|
2720 } else if (match_option(option, "-XX:+FullGCALot", &tail)) { |
0 | 2721 FLAG_SET_CMDLINE(bool, FullGCALot, true); |
2722 // disable scavenge before parallel mark-compact | |
2723 FLAG_SET_CMDLINE(bool, ScavengeBeforeFullGC, false); | |
2724 #endif | |
1145
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
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parents:
1074
diff
changeset
|
2725 } else if (match_option(option, "-XX:CMSParPromoteBlocksToClaim=", &tail)) { |
0 | 2726 julong cms_blocks_to_claim = (julong)atol(tail); |
2727 FLAG_SET_CMDLINE(uintx, CMSParPromoteBlocksToClaim, cms_blocks_to_claim); | |
2728 jio_fprintf(defaultStream::error_stream(), | |
1145
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
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parents:
1074
diff
changeset
|
2729 "Please use -XX:OldPLABSize in place of " |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1074
diff
changeset
|
2730 "-XX:CMSParPromoteBlocksToClaim in the future\n"); |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1074
diff
changeset
|
2731 } else if (match_option(option, "-XX:ParCMSPromoteBlocksToClaim=", &tail)) { |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1074
diff
changeset
|
2732 julong cms_blocks_to_claim = (julong)atol(tail); |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1074
diff
changeset
|
2733 FLAG_SET_CMDLINE(uintx, CMSParPromoteBlocksToClaim, cms_blocks_to_claim); |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1074
diff
changeset
|
2734 jio_fprintf(defaultStream::error_stream(), |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1074
diff
changeset
|
2735 "Please use -XX:OldPLABSize in place of " |
0 | 2736 "-XX:ParCMSPromoteBlocksToClaim in the future\n"); |
1145
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6631166: CMS: better heuristics when combatting fragmentation
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parents:
1074
diff
changeset
|
2737 } else if (match_option(option, "-XX:ParallelGCOldGenAllocBufferSize=", &tail)) { |
489
2494ab195856
6653214: MemoryPoolMXBean.setUsageThreshold() does not support large heap sizes.
swamyv
parents:
483
diff
changeset
|
2738 julong old_plab_size = 0; |
0 | 2739 ArgsRange errcode = parse_memory_size(tail, &old_plab_size, 1); |
2740 if (errcode != arg_in_range) { | |
2741 jio_fprintf(defaultStream::error_stream(), | |
2742 "Invalid old PLAB size: %s\n", option->optionString); | |
2743 describe_range_error(errcode); | |
2744 return JNI_EINVAL; | |
2745 } | |
489
2494ab195856
6653214: MemoryPoolMXBean.setUsageThreshold() does not support large heap sizes.
swamyv
parents:
483
diff
changeset
|
2746 FLAG_SET_CMDLINE(uintx, OldPLABSize, old_plab_size); |
0 | 2747 jio_fprintf(defaultStream::error_stream(), |
2748 "Please use -XX:OldPLABSize in place of " | |
2749 "-XX:ParallelGCOldGenAllocBufferSize in the future\n"); | |
1145
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1074
diff
changeset
|
2750 } else if (match_option(option, "-XX:ParallelGCToSpaceAllocBufferSize=", &tail)) { |
489
2494ab195856
6653214: MemoryPoolMXBean.setUsageThreshold() does not support large heap sizes.
swamyv
parents:
483
diff
changeset
|
2751 julong young_plab_size = 0; |
0 | 2752 ArgsRange errcode = parse_memory_size(tail, &young_plab_size, 1); |
2753 if (errcode != arg_in_range) { | |
2754 jio_fprintf(defaultStream::error_stream(), | |
2755 "Invalid young PLAB size: %s\n", option->optionString); | |
2756 describe_range_error(errcode); | |
2757 return JNI_EINVAL; | |
2758 } | |
489
2494ab195856
6653214: MemoryPoolMXBean.setUsageThreshold() does not support large heap sizes.
swamyv
parents:
483
diff
changeset
|
2759 FLAG_SET_CMDLINE(uintx, YoungPLABSize, young_plab_size); |
0 | 2760 jio_fprintf(defaultStream::error_stream(), |
2761 "Please use -XX:YoungPLABSize in place of " | |
2762 "-XX:ParallelGCToSpaceAllocBufferSize in the future\n"); | |
1284 | 2763 } else if (match_option(option, "-XX:CMSMarkStackSize=", &tail) || |
2764 match_option(option, "-XX:G1MarkStackSize=", &tail)) { | |
2765 julong stack_size = 0; | |
2766 ArgsRange errcode = parse_memory_size(tail, &stack_size, 1); | |
2767 if (errcode != arg_in_range) { | |
2768 jio_fprintf(defaultStream::error_stream(), | |
2769 "Invalid mark stack size: %s\n", option->optionString); | |
2770 describe_range_error(errcode); | |
2771 return JNI_EINVAL; | |
2772 } | |
2773 FLAG_SET_CMDLINE(uintx, MarkStackSize, stack_size); | |
2774 } else if (match_option(option, "-XX:CMSMarkStackSizeMax=", &tail)) { | |
2775 julong max_stack_size = 0; | |
2776 ArgsRange errcode = parse_memory_size(tail, &max_stack_size, 1); | |
2777 if (errcode != arg_in_range) { | |
2778 jio_fprintf(defaultStream::error_stream(), | |
2779 "Invalid maximum mark stack size: %s\n", | |
2780 option->optionString); | |
2781 describe_range_error(errcode); | |
2782 return JNI_EINVAL; | |
2783 } | |
2784 FLAG_SET_CMDLINE(uintx, MarkStackSizeMax, max_stack_size); | |
2785 } else if (match_option(option, "-XX:ParallelMarkingThreads=", &tail) || | |
2786 match_option(option, "-XX:ParallelCMSThreads=", &tail)) { | |
2787 uintx conc_threads = 0; | |
2788 if (!parse_uintx(tail, &conc_threads, 1)) { | |
2789 jio_fprintf(defaultStream::error_stream(), | |
2790 "Invalid concurrent threads: %s\n", option->optionString); | |
2791 return JNI_EINVAL; | |
2792 } | |
2793 FLAG_SET_CMDLINE(uintx, ConcGCThreads, conc_threads); | |
6199
3f1ab0c19c30
7179383: MaxDirectMemorySize argument parsing is broken for values >2G
dholmes
parents:
6198
diff
changeset
|
2794 } else if (match_option(option, "-XX:MaxDirectMemorySize=", &tail)) { |
3f1ab0c19c30
7179383: MaxDirectMemorySize argument parsing is broken for values >2G
dholmes
parents:
6198
diff
changeset
|
2795 julong max_direct_memory_size = 0; |
3f1ab0c19c30
7179383: MaxDirectMemorySize argument parsing is broken for values >2G
dholmes
parents:
6198
diff
changeset
|
2796 ArgsRange errcode = parse_memory_size(tail, &max_direct_memory_size, 0); |
3f1ab0c19c30
7179383: MaxDirectMemorySize argument parsing is broken for values >2G
dholmes
parents:
6198
diff
changeset
|
2797 if (errcode != arg_in_range) { |
3f1ab0c19c30
7179383: MaxDirectMemorySize argument parsing is broken for values >2G
dholmes
parents:
6198
diff
changeset
|
2798 jio_fprintf(defaultStream::error_stream(), |
3f1ab0c19c30
7179383: MaxDirectMemorySize argument parsing is broken for values >2G
dholmes
parents:
6198
diff
changeset
|
2799 "Invalid maximum direct memory size: %s\n", |
3f1ab0c19c30
7179383: MaxDirectMemorySize argument parsing is broken for values >2G
dholmes
parents:
6198
diff
changeset
|
2800 option->optionString); |
3f1ab0c19c30
7179383: MaxDirectMemorySize argument parsing is broken for values >2G
dholmes
parents:
6198
diff
changeset
|
2801 describe_range_error(errcode); |
3f1ab0c19c30
7179383: MaxDirectMemorySize argument parsing is broken for values >2G
dholmes
parents:
6198
diff
changeset
|
2802 return JNI_EINVAL; |
3f1ab0c19c30
7179383: MaxDirectMemorySize argument parsing is broken for values >2G
dholmes
parents:
6198
diff
changeset
|
2803 } |
3f1ab0c19c30
7179383: MaxDirectMemorySize argument parsing is broken for values >2G
dholmes
parents:
6198
diff
changeset
|
2804 FLAG_SET_CMDLINE(uintx, MaxDirectMemorySize, max_direct_memory_size); |
6878
85916677fc22
7188233: UseVMInterruptibleIO flag deprecate for JDK8
coleenp
parents:
6857
diff
changeset
|
2805 } else if (match_option(option, "-XX:+UseVMInterruptibleIO", &tail)) { |
85916677fc22
7188233: UseVMInterruptibleIO flag deprecate for JDK8
coleenp
parents:
6857
diff
changeset
|
2806 // NOTE! In JDK 9, the UseVMInterruptibleIO flag will completely go |
85916677fc22
7188233: UseVMInterruptibleIO flag deprecate for JDK8
coleenp
parents:
6857
diff
changeset
|
2807 // away and will cause VM initialization failures! |
85916677fc22
7188233: UseVMInterruptibleIO flag deprecate for JDK8
coleenp
parents:
6857
diff
changeset
|
2808 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
|
2809 FLAG_SET_CMDLINE(bool, UseVMInterruptibleIO, true); |
1145
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1074
diff
changeset
|
2810 } else if (match_option(option, "-XX:", &tail)) { // -XX:xxxx |
0 | 2811 // Skip -XX:Flags= since that case has already been handled |
2812 if (strncmp(tail, "Flags=", strlen("Flags=")) != 0) { | |
2813 if (!process_argument(tail, args->ignoreUnrecognized, origin)) { | |
2814 return JNI_EINVAL; | |
2815 } | |
2816 } | |
2817 // Unknown option | |
2818 } else if (is_bad_option(option, args->ignoreUnrecognized)) { | |
2819 return JNI_ERR; | |
2820 } | |
2821 } | |
3767
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3349
diff
changeset
|
2822 |
449
171e581e8161
6554406: Change switch UseVMInterruptibleIO default to false (sol)
xlu
parents:
420
diff
changeset
|
2823 // 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
|
2824 // when working with older JDKs. |
1679
3d90023429ec
6888526: Linux getCurrentThreadCpuTime is drastically slower than Windows
aph
parents:
1628
diff
changeset
|
2825 #ifdef LINUX |
3d90023429ec
6888526: Linux getCurrentThreadCpuTime is drastically slower than Windows
aph
parents:
1628
diff
changeset
|
2826 if (JDK_Version::current().compare_major(6) <= 0 && |
3d90023429ec
6888526: Linux getCurrentThreadCpuTime is drastically slower than Windows
aph
parents:
1628
diff
changeset
|
2827 FLAG_IS_DEFAULT(UseLinuxPosixThreadCPUClocks)) { |
3d90023429ec
6888526: Linux getCurrentThreadCpuTime is drastically slower than Windows
aph
parents:
1628
diff
changeset
|
2828 FLAG_SET_DEFAULT(UseLinuxPosixThreadCPUClocks, false); |
3d90023429ec
6888526: Linux getCurrentThreadCpuTime is drastically slower than Windows
aph
parents:
1628
diff
changeset
|
2829 } |
3d90023429ec
6888526: Linux getCurrentThreadCpuTime is drastically slower than Windows
aph
parents:
1628
diff
changeset
|
2830 #endif // LINUX |
0 | 2831 return JNI_OK; |
2832 } | |
2833 | |
2834 jint Arguments::finalize_vm_init_args(SysClassPath* scp_p, bool scp_assembly_required) { | |
2835 // This must be done after all -D arguments have been processed. | |
2836 scp_p->expand_endorsed(); | |
2837 | |
2838 if (scp_assembly_required || scp_p->get_endorsed() != NULL) { | |
2839 // Assemble the bootclasspath elements into the final path. | |
2840 Arguments::set_sysclasspath(scp_p->combined_path()); | |
2841 } | |
2842 | |
2843 // This must be done after all arguments have been processed. | |
2844 // java_compiler() true means set to "NONE" or empty. | |
2845 if (java_compiler() && !xdebug_mode()) { | |
2846 // For backwards compatibility, we switch to interpreted mode if | |
2847 // -Djava.compiler="NONE" or "" is specified AND "-Xdebug" was | |
2848 // not specified. | |
2849 set_mode_flags(_int); | |
2850 } | |
2851 if (CompileThreshold == 0) { | |
2852 set_mode_flags(_int); | |
2853 } | |
2854 | |
2855 #ifndef COMPILER2 | |
2856 // Don't degrade server performance for footprint | |
2857 if (FLAG_IS_DEFAULT(UseLargePages) && | |
2858 MaxHeapSize < LargePageHeapSizeThreshold) { | |
2859 // No need for large granularity pages w/small heaps. | |
2860 // Note that large pages are enabled/disabled for both the | |
2861 // Java heap and the code cache. | |
2862 FLAG_SET_DEFAULT(UseLargePages, false); | |
2863 SOLARIS_ONLY(FLAG_SET_DEFAULT(UseMPSS, false)); | |
2864 SOLARIS_ONLY(FLAG_SET_DEFAULT(UseISM, false)); | |
2865 } | |
342
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
135
diff
changeset
|
2866 |
1251
576e77447e3c
6923002: assert(false,"this call site should not be polymorphic")
kvn
parents:
1188
diff
changeset
|
2867 // Tiered compilation is undefined with C1. |
576e77447e3c
6923002: assert(false,"this call site should not be polymorphic")
kvn
parents:
1188
diff
changeset
|
2868 TieredCompilation = false; |
0 | 2869 #else |
2870 if (!FLAG_IS_DEFAULT(OptoLoopAlignment) && FLAG_IS_DEFAULT(MaxLoopPad)) { | |
2871 FLAG_SET_DEFAULT(MaxLoopPad, OptoLoopAlignment-1); | |
2872 } | |
2873 #endif | |
2874 | |
1681
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2875 // 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
|
2876 // to be true unless the property has already been set. |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2877 // 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
|
2878 if (os::is_headless_jre()) { |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2879 const char* headless = Arguments::get_property("java.awt.headless"); |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2880 if (headless == NULL) { |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2881 char envbuffer[128]; |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2882 if (!os::getenv("JAVA_AWT_HEADLESS", envbuffer, sizeof(envbuffer))) { |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2883 if (!add_property("java.awt.headless=true")) { |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2884 return JNI_ENOMEM; |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2885 } |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2886 } else { |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2887 char buffer[256]; |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2888 strcpy(buffer, "java.awt.headless="); |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2889 strcat(buffer, envbuffer); |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2890 if (!add_property(buffer)) { |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2891 return JNI_ENOMEM; |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2892 } |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2893 } |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2894 } |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2895 } |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2896 |
0 | 2897 if (!check_vm_args_consistency()) { |
2898 return JNI_ERR; | |
2899 } | |
2900 | |
2901 return JNI_OK; | |
2902 } | |
2903 | |
2904 jint Arguments::parse_java_options_environment_variable(SysClassPath* scp_p, bool* scp_assembly_required_p) { | |
2905 return parse_options_environment_variable("_JAVA_OPTIONS", scp_p, | |
2906 scp_assembly_required_p); | |
2907 } | |
2908 | |
2909 jint Arguments::parse_java_tool_options_environment_variable(SysClassPath* scp_p, bool* scp_assembly_required_p) { | |
2910 return parse_options_environment_variable("JAVA_TOOL_OPTIONS", scp_p, | |
2911 scp_assembly_required_p); | |
2912 } | |
2913 | |
2914 jint Arguments::parse_options_environment_variable(const char* name, SysClassPath* scp_p, bool* scp_assembly_required_p) { | |
2915 const int N_MAX_OPTIONS = 64; | |
2916 const int OPTION_BUFFER_SIZE = 1024; | |
2917 char buffer[OPTION_BUFFER_SIZE]; | |
2918 | |
2919 // The variable will be ignored if it exceeds the length of the buffer. | |
2920 // Don't check this variable if user has special privileges | |
2921 // (e.g. unix su command). | |
2922 if (os::getenv(name, buffer, sizeof(buffer)) && | |
2923 !os::have_special_privileges()) { | |
2924 JavaVMOption options[N_MAX_OPTIONS]; // Construct option array | |
2925 jio_fprintf(defaultStream::error_stream(), | |
2926 "Picked up %s: %s\n", name, buffer); | |
2927 char* rd = buffer; // pointer to the input string (rd) | |
2928 int i; | |
2929 for (i = 0; i < N_MAX_OPTIONS;) { // repeat for all options in the input string | |
2930 while (isspace(*rd)) rd++; // skip whitespace | |
2931 if (*rd == 0) break; // we re done when the input string is read completely | |
2932 | |
2933 // The output, option string, overwrites the input string. | |
2934 // Because of quoting, the pointer to the option string (wrt) may lag the pointer to | |
2935 // input string (rd). | |
2936 char* wrt = rd; | |
2937 | |
2938 options[i++].optionString = wrt; // Fill in option | |
2939 while (*rd != 0 && !isspace(*rd)) { // unquoted strings terminate with a space or NULL | |
2940 if (*rd == '\'' || *rd == '"') { // handle a quoted string | |
2941 int quote = *rd; // matching quote to look for | |
2942 rd++; // don't copy open quote | |
2943 while (*rd != quote) { // include everything (even spaces) up until quote | |
2944 if (*rd == 0) { // string termination means unmatched string | |
2945 jio_fprintf(defaultStream::error_stream(), | |
2946 "Unmatched quote in %s\n", name); | |
2947 return JNI_ERR; | |
2948 } | |
2949 *wrt++ = *rd++; // copy to option string | |
2950 } | |
2951 rd++; // don't copy close quote | |
2952 } else { | |
2953 *wrt++ = *rd++; // copy to option string | |
2954 } | |
2955 } | |
2956 // Need to check if we're done before writing a NULL, | |
2957 // because the write could be to the byte that rd is pointing to. | |
2958 if (*rd++ == 0) { | |
2959 *wrt = 0; | |
2960 break; | |
2961 } | |
2962 *wrt = 0; // Zero terminate option | |
2963 } | |
2964 // Construct JavaVMInitArgs structure and parse as if it was part of the command line | |
2965 JavaVMInitArgs vm_args; | |
2966 vm_args.version = JNI_VERSION_1_2; | |
2967 vm_args.options = options; | |
2968 vm_args.nOptions = i; | |
564 | 2969 vm_args.ignoreUnrecognized = IgnoreUnrecognizedVMOptions; |
0 | 2970 |
2971 if (PrintVMOptions) { | |
2972 const char* tail; | |
2973 for (int i = 0; i < vm_args.nOptions; i++) { | |
2974 const JavaVMOption *option = vm_args.options + i; | |
2975 if (match_option(option, "-XX:", &tail)) { | |
2976 logOption(tail); | |
2977 } | |
2978 } | |
2979 } | |
2980 | |
2981 return(parse_each_vm_init_arg(&vm_args, scp_p, scp_assembly_required_p, ENVIRON_VAR)); | |
2982 } | |
2983 return JNI_OK; | |
2984 } | |
2985 | |
2362
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2986 void Arguments::set_shared_spaces_flags() { |
2378 | 2987 const bool must_share = DumpSharedSpaces || RequireSharedSpaces; |
2988 const bool might_share = must_share || UseSharedSpaces; | |
2989 | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6628
diff
changeset
|
2990 // 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
|
2991 // 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
|
2992 // initialization, this restriction can probably be lifted. |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6628
diff
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|
2993 // ??? UseLargePages might be okay now |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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6628
diff
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|
2994 const bool cannot_share = UseCompressedOops || |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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6628
diff
changeset
|
2995 (UseLargePages && FLAG_IS_CMDLINE(UseLargePages)); |
2362
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2996 if (cannot_share) { |
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2997 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
|
2998 warning("disabling large pages %s" |
2378 | 2999 "because of %s", "" LP64_ONLY("and compressed oops "), |
3000 DumpSharedSpaces ? "-Xshare:dump" : "-Xshare:on"); | |
3001 FLAG_SET_CMDLINE(bool, UseLargePages, false); | |
3002 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
|
3003 LP64_ONLY(FLAG_SET_CMDLINE(bool, UseCompressedKlassPointers, false)); |
2362
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
3004 } else { |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6628
diff
changeset
|
3005 // 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
|
3006 if (UseSharedSpaces && Verbose) { |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6628
diff
changeset
|
3007 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
|
3008 "" LP64_ONLY(" and/or compressed oops")); |
2362
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
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diff
changeset
|
3009 } |
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
3010 no_shared_spaces(); |
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
3011 } |
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
3012 } else if (UseLargePages && might_share) { |
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
3013 // 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
|
3014 // there may not even be a shared archive to use. |
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
3015 FLAG_SET_DEFAULT(UseLargePages, false); |
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
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diff
changeset
|
3016 } |
6725
da91efe96a93
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diff
changeset
|
3017 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
3018 if (DumpSharedSpaces) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
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diff
changeset
|
3019 if (RequireSharedSpaces) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6628
diff
changeset
|
3020 warning("cannot dump shared archive while using shared archive"); |
da91efe96a93
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coleenp
parents:
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diff
changeset
|
3021 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
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diff
changeset
|
3022 UseSharedSpaces = false; |
da91efe96a93
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|
3023 } |
2362
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
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diff
changeset
|
3024 } |
1891
9de67bf4244d
6996136: VM crash in src/share/vm/runtime/virtualspace.cpp:424
iveresov
parents:
1890
diff
changeset
|
3025 |
3797
eb94b7226b7a
7061192: option handling adjustments for oracle and embedded builds
jcoomes
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3769
diff
changeset
|
3026 // Disable options not supported in this release, with a warning if they |
eb94b7226b7a
7061192: option handling adjustments for oracle and embedded builds
jcoomes
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3769
diff
changeset
|
3027 // were explicitly requested on the command-line |
eb94b7226b7a
7061192: option handling adjustments for oracle and embedded builds
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3769
diff
changeset
|
3028 #define UNSUPPORTED_OPTION(opt, description) \ |
eb94b7226b7a
7061192: option handling adjustments for oracle and embedded builds
jcoomes
parents:
3769
diff
changeset
|
3029 do { \ |
eb94b7226b7a
7061192: option handling adjustments for oracle and embedded builds
jcoomes
parents:
3769
diff
changeset
|
3030 if (opt) { \ |
eb94b7226b7a
7061192: option handling adjustments for oracle and embedded builds
jcoomes
parents:
3769
diff
changeset
|
3031 if (FLAG_IS_CMDLINE(opt)) { \ |
eb94b7226b7a
7061192: option handling adjustments for oracle and embedded builds
jcoomes
parents:
3769
diff
changeset
|
3032 warning(description " is disabled in this release."); \ |
eb94b7226b7a
7061192: option handling adjustments for oracle and embedded builds
jcoomes
parents:
3769
diff
changeset
|
3033 } \ |
eb94b7226b7a
7061192: option handling adjustments for oracle and embedded builds
jcoomes
parents:
3769
diff
changeset
|
3034 FLAG_SET_DEFAULT(opt, false); \ |
eb94b7226b7a
7061192: option handling adjustments for oracle and embedded builds
jcoomes
parents:
3769
diff
changeset
|
3035 } \ |
eb94b7226b7a
7061192: option handling adjustments for oracle and embedded builds
jcoomes
parents:
3769
diff
changeset
|
3036 } while(0) |
eb94b7226b7a
7061192: option handling adjustments for oracle and embedded builds
jcoomes
parents:
3769
diff
changeset
|
3037 |
0 | 3038 // Parse entry point called from JNI_CreateJavaVM |
3039 | |
3040 jint Arguments::parse(const JavaVMInitArgs* args) { | |
3041 | |
3042 // Sharing support | |
3043 // Construct the path to the archive | |
3044 char jvm_path[JVM_MAXPATHLEN]; | |
3045 os::jvm_path(jvm_path, sizeof(jvm_path)); | |
3046 char *end = strrchr(jvm_path, *os::file_separator()); | |
3047 if (end != NULL) *end = '\0'; | |
3048 char *shared_archive_path = NEW_C_HEAP_ARRAY(char, strlen(jvm_path) + | |
6197 | 3049 strlen(os::file_separator()) + 20, mtInternal); |
0 | 3050 if (shared_archive_path == NULL) return JNI_ENOMEM; |
3051 strcpy(shared_archive_path, jvm_path); | |
3052 strcat(shared_archive_path, os::file_separator()); | |
3053 strcat(shared_archive_path, "classes"); | |
3054 strcat(shared_archive_path, ".jsa"); | |
3055 SharedArchivePath = shared_archive_path; | |
3056 | |
3057 // Remaining part of option string | |
3058 const char* tail; | |
3059 | |
3060 // 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
|
3061 const char* hotspotrc = ".hotspotrc"; |
0 | 3062 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
|
3063 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
|
3064 |
564 | 3065 const char* flags_file; |
0 | 3066 int index; |
3067 for (index = 0; index < args->nOptions; index++) { | |
3068 const JavaVMOption *option = args->options + index; | |
3069 if (match_option(option, "-XX:Flags=", &tail)) { | |
564 | 3070 flags_file = tail; |
0 | 3071 settings_file_specified = true; |
3072 } | |
3073 if (match_option(option, "-XX:+PrintVMOptions", &tail)) { | |
3074 PrintVMOptions = true; | |
3075 } | |
253
b0fe4deeb9fb
6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.")
kvn
parents:
196
diff
changeset
|
3076 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
|
3077 PrintVMOptions = false; |
b0fe4deeb9fb
6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.")
kvn
parents:
196
diff
changeset
|
3078 } |
564 | 3079 if (match_option(option, "-XX:+IgnoreUnrecognizedVMOptions", &tail)) { |
3080 IgnoreUnrecognizedVMOptions = true; | |
3081 } | |
3082 if (match_option(option, "-XX:-IgnoreUnrecognizedVMOptions", &tail)) { | |
3083 IgnoreUnrecognizedVMOptions = false; | |
3084 } | |
1150 | 3085 if (match_option(option, "-XX:+PrintFlagsInitial", &tail)) { |
4773 | 3086 CommandLineFlags::printFlags(tty, false); |
1150 | 3087 vm_exit(0); |
3088 } | |
6197 | 3089 if (match_option(option, "-XX:NativeMemoryTracking", &tail)) { |
6854
fb19af007ffc
7189254: Change makefiles for more flexibility to override defaults
jprovino
parents:
6818
diff
changeset
|
3090 #if INCLUDE_NMT |
6197 | 3091 MemTracker::init_tracking_options(tail); |
6854
fb19af007ffc
7189254: Change makefiles for more flexibility to override defaults
jprovino
parents:
6818
diff
changeset
|
3092 #else |
fb19af007ffc
7189254: Change makefiles for more flexibility to override defaults
jprovino
parents:
6818
diff
changeset
|
3093 warning("Native Memory Tracking is not supported in this VM"); |
fb19af007ffc
7189254: Change makefiles for more flexibility to override defaults
jprovino
parents:
6818
diff
changeset
|
3094 #endif |
6197 | 3095 } |
3096 | |
1768
6ee479178066
6979444: add command line option to print command line flags descriptions
ikrylov
parents:
1745
diff
changeset
|
3097 |
6ee479178066
6979444: add command line option to print command line flags descriptions
ikrylov
parents:
1745
diff
changeset
|
3098 #ifndef PRODUCT |
6ee479178066
6979444: add command line option to print command line flags descriptions
ikrylov
parents:
1745
diff
changeset
|
3099 if (match_option(option, "-XX:+PrintFlagsWithComments", &tail)) { |
4773 | 3100 CommandLineFlags::printFlags(tty, true); |
1768
6ee479178066
6979444: add command line option to print command line flags descriptions
ikrylov
parents:
1745
diff
changeset
|
3101 vm_exit(0); |
6ee479178066
6979444: add command line option to print command line flags descriptions
ikrylov
parents:
1745
diff
changeset
|
3102 } |
6ee479178066
6979444: add command line option to print command line flags descriptions
ikrylov
parents:
1745
diff
changeset
|
3103 #endif |
564 | 3104 } |
3105 | |
3106 if (IgnoreUnrecognizedVMOptions) { | |
3107 // uncast const to modify the flag args->ignoreUnrecognized | |
3108 *(jboolean*)(&args->ignoreUnrecognized) = true; | |
3109 } | |
3110 | |
3111 // Parse specified settings file | |
3112 if (settings_file_specified) { | |
3113 if (!process_settings_file(flags_file, true, args->ignoreUnrecognized)) { | |
3114 return JNI_EINVAL; | |
3115 } | |
6196
3759236eea14
7167142: Consider a warning when finding a .hotspotrc or .hotspot_compiler file that isn't used
kamg
parents:
6158
diff
changeset
|
3116 } else { |
6150
1e76463170b3
7110720: Issue with vm config file loadingIssue with vm config file loading
kamg
parents:
4780
diff
changeset
|
3117 #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
|
3118 // Parse default .hotspotrc settings file |
0 | 3119 if (!process_settings_file(".hotspotrc", false, args->ignoreUnrecognized)) { |
3120 return JNI_EINVAL; | |
3121 } | |
6196
3759236eea14
7167142: Consider a warning when finding a .hotspotrc or .hotspot_compiler file that isn't used
kamg
parents:
6158
diff
changeset
|
3122 #else |
3759236eea14
7167142: Consider a warning when finding a .hotspotrc or .hotspot_compiler file that isn't used
kamg
parents:
6158
diff
changeset
|
3123 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
|
3124 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
|
3125 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
|
3126 } |
3759236eea14
7167142: Consider a warning when finding a .hotspotrc or .hotspot_compiler file that isn't used
kamg
parents:
6158
diff
changeset
|
3127 #endif |
0 | 3128 } |
3129 | |
3130 if (PrintVMOptions) { | |
3131 for (index = 0; index < args->nOptions; index++) { | |
3132 const JavaVMOption *option = args->options + index; | |
3133 if (match_option(option, "-XX:", &tail)) { | |
3134 logOption(tail); | |
3135 } | |
3136 } | |
3137 } | |
3138 | |
3139 // Parse JavaVMInitArgs structure passed in, as well as JAVA_TOOL_OPTIONS and _JAVA_OPTIONS | |
3140 jint result = parse_vm_init_args(args); | |
3141 if (result != JNI_OK) { | |
3142 return result; | |
3143 } | |
3144 | |
6196
3759236eea14
7167142: Consider a warning when finding a .hotspotrc or .hotspot_compiler file that isn't used
kamg
parents:
6158
diff
changeset
|
3145 // 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
|
3146 // 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
|
3147 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
|
3148 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
|
3149 "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
|
3150 hotspotrc, hotspotrc); |
3759236eea14
7167142: Consider a warning when finding a .hotspotrc or .hotspot_compiler file that isn't used
kamg
parents:
6158
diff
changeset
|
3151 } |
3759236eea14
7167142: Consider a warning when finding a .hotspotrc or .hotspot_compiler file that isn't used
kamg
parents:
6158
diff
changeset
|
3152 |
6055
35e504cb49a6
7167625: Adjustments for SE-Embedded build process
collins
parents:
6017
diff
changeset
|
3153 #if (defined JAVASE_EMBEDDED || defined ARM) |
3797
eb94b7226b7a
7061192: option handling adjustments for oracle and embedded builds
jcoomes
parents:
3769
diff
changeset
|
3154 UNSUPPORTED_OPTION(UseG1GC, "G1 GC"); |
eb94b7226b7a
7061192: option handling adjustments for oracle and embedded builds
jcoomes
parents:
3769
diff
changeset
|
3155 #endif |
eb94b7226b7a
7061192: option handling adjustments for oracle and embedded builds
jcoomes
parents:
3769
diff
changeset
|
3156 |
6917
e81fbc04a942
7191817: -XX:+UseSerialGC -XX:+UseLargePages crashes with SIGFPE on MacOS X
coleenp
parents:
6916
diff
changeset
|
3157 #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
|
3158 UNSUPPORTED_OPTION(UseLargePages, "-XX:+UseLargePages"); |
e81fbc04a942
7191817: -XX:+UseSerialGC -XX:+UseLargePages crashes with SIGFPE on MacOS X
coleenp
parents:
6916
diff
changeset
|
3159 #endif |
e81fbc04a942
7191817: -XX:+UseSerialGC -XX:+UseLargePages crashes with SIGFPE on MacOS X
coleenp
parents:
6916
diff
changeset
|
3160 |
8001
db9981fd3124
8005915: Unify SERIALGC and INCLUDE_ALTERNATE_GCS
jprovino
parents:
7479
diff
changeset
|
3161 #if !INCLUDE_ALL_GCS |
6854
fb19af007ffc
7189254: Change makefiles for more flexibility to override defaults
jprovino
parents:
6818
diff
changeset
|
3162 if (UseParallelGC) { |
fb19af007ffc
7189254: Change makefiles for more flexibility to override defaults
jprovino
parents:
6818
diff
changeset
|
3163 warning("Parallel GC is not supported in this VM. Using Serial GC."); |
fb19af007ffc
7189254: Change makefiles for more flexibility to override defaults
jprovino
parents:
6818
diff
changeset
|
3164 } |
fb19af007ffc
7189254: Change makefiles for more flexibility to override defaults
jprovino
parents:
6818
diff
changeset
|
3165 if (UseParallelOldGC) { |
fb19af007ffc
7189254: Change makefiles for more flexibility to override defaults
jprovino
parents:
6818
diff
changeset
|
3166 warning("Parallel Old GC is not supported in this VM. Using Serial GC."); |
fb19af007ffc
7189254: Change makefiles for more flexibility to override defaults
jprovino
parents:
6818
diff
changeset
|
3167 } |
fb19af007ffc
7189254: Change makefiles for more flexibility to override defaults
jprovino
parents:
6818
diff
changeset
|
3168 if (UseConcMarkSweepGC) { |
fb19af007ffc
7189254: Change makefiles for more flexibility to override defaults
jprovino
parents:
6818
diff
changeset
|
3169 warning("Concurrent Mark Sweep GC is not supported in this VM. Using Serial GC."); |
fb19af007ffc
7189254: Change makefiles for more flexibility to override defaults
jprovino
parents:
6818
diff
changeset
|
3170 } |
fb19af007ffc
7189254: Change makefiles for more flexibility to override defaults
jprovino
parents:
6818
diff
changeset
|
3171 if (UseParNewGC) { |
fb19af007ffc
7189254: Change makefiles for more flexibility to override defaults
jprovino
parents:
6818
diff
changeset
|
3172 warning("Par New GC is not supported in this VM. Using Serial GC."); |
fb19af007ffc
7189254: Change makefiles for more flexibility to override defaults
jprovino
parents:
6818
diff
changeset
|
3173 } |
8001
db9981fd3124
8005915: Unify SERIALGC and INCLUDE_ALTERNATE_GCS
jprovino
parents:
7479
diff
changeset
|
3174 #endif // INCLUDE_ALL_GCS |
6854
fb19af007ffc
7189254: Change makefiles for more flexibility to override defaults
jprovino
parents:
6818
diff
changeset
|
3175 |
0 | 3176 #ifndef PRODUCT |
3177 if (TraceBytecodesAt != 0) { | |
3178 TraceBytecodes = true; | |
3179 } | |
3180 if (CountCompiledCalls) { | |
3181 if (UseCounterDecay) { | |
3182 warning("UseCounterDecay disabled because CountCalls is set"); | |
3183 UseCounterDecay = false; | |
3184 } | |
3185 } | |
3186 #endif // PRODUCT | |
3187 | |
2416
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
3188 // 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
|
3189 if (!JDK_Version::is_gte_jdk17x_version()) { |
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
3190 if (EnableInvokeDynamic) { |
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
3191 if (!FLAG_IS_DEFAULT(EnableInvokeDynamic)) { |
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
3192 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
|
3193 } |
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
3194 EnableInvokeDynamic = false; |
710 | 3195 } |
3196 } | |
2416
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
3197 |
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
3198 if (EnableInvokeDynamic && ScavengeRootsInCode == 0) { |
989
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
932
diff
changeset
|
3199 if (!FLAG_IS_DEFAULT(ScavengeRootsInCode)) { |
2416
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
3200 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
|
3201 } |
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
932
diff
changeset
|
3202 ScavengeRootsInCode = 1; |
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
932
diff
changeset
|
3203 } |
710 | 3204 |
0 | 3205 if (PrintGCDetails) { |
3206 // Turn on -verbose:gc options as well | |
3207 PrintGC = true; | |
3208 } | |
3209 | |
6064
9d679effd28c
7166894: Add gc cause to GC logging for all collectors
brutisso
parents:
6017
diff
changeset
|
3210 if (!JDK_Version::is_gte_jdk18x_version()) { |
9d679effd28c
7166894: Add gc cause to GC logging for all collectors
brutisso
parents:
6017
diff
changeset
|
3211 // 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
|
3212 // true by default in JDK8 and above. |
9d679effd28c
7166894: Add gc cause to GC logging for all collectors
brutisso
parents:
6017
diff
changeset
|
3213 if (FLAG_IS_DEFAULT(PrintGCCause)) { |
9d679effd28c
7166894: Add gc cause to GC logging for all collectors
brutisso
parents:
6017
diff
changeset
|
3214 FLAG_SET_DEFAULT(PrintGCCause, false); |
9d679effd28c
7166894: Add gc cause to GC logging for all collectors
brutisso
parents:
6017
diff
changeset
|
3215 } |
9d679effd28c
7166894: Add gc cause to GC logging for all collectors
brutisso
parents:
6017
diff
changeset
|
3216 } |
9d679effd28c
7166894: Add gc cause to GC logging for all collectors
brutisso
parents:
6017
diff
changeset
|
3217 |
1571
2d127394260e
6916623: Align object to 16 bytes to use Compressed Oops with java heap up to 64Gb
kvn
parents:
1506
diff
changeset
|
3218 // 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
|
3219 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
|
3220 |
8001
db9981fd3124
8005915: Unify SERIALGC and INCLUDE_ALTERNATE_GCS
jprovino
parents:
7479
diff
changeset
|
3221 #if !INCLUDE_ALL_GCS |
1064 | 3222 force_serial_gc(); |
8001
db9981fd3124
8005915: Unify SERIALGC and INCLUDE_ALTERNATE_GCS
jprovino
parents:
7479
diff
changeset
|
3223 #endif // INCLUDE_ALL_GCS |
6854
fb19af007ffc
7189254: Change makefiles for more flexibility to override defaults
jprovino
parents:
6818
diff
changeset
|
3224 #if !INCLUDE_CDS |
0 | 3225 no_shared_spaces(); |
6854
fb19af007ffc
7189254: Change makefiles for more flexibility to override defaults
jprovino
parents:
6818
diff
changeset
|
3226 #endif // INCLUDE_CDS |
0 | 3227 |
3228 // Set flags based on ergonomics. | |
3229 set_ergonomics_flags(); | |
3230 | |
2362
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
3231 set_shared_spaces_flags(); |
1135
e66fd840cb6b
6893081: method handle & invokedynamic code needs additional cleanup (post 6815692, 6858164)
twisti
parents:
1131
diff
changeset
|
3232 |
10
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
3233 // Check the GC selections again. |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
3234 if (!check_gc_consistency()) { |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
3235 return JNI_EINVAL; |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
3236 } |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
3237 |
1783 | 3238 if (TieredCompilation) { |
3239 set_tiered_flags(); | |
3240 } else { | |
3241 // Check if the policy is valid. Policies 0 and 1 are valid for non-tiered setup. | |
3242 if (CompilationPolicyChoice >= 2) { | |
3243 vm_exit_during_initialization( | |
3244 "Incompatible compilation policy selected", NULL); | |
3245 } | |
3246 } | |
3247 | |
2368
dde920245681
6896099: Integrate CMS heap ergo with default heap sizing ergo
ysr
parents:
2366
diff
changeset
|
3248 // Set heap size based on available physical memory |
dde920245681
6896099: Integrate CMS heap ergo with default heap sizing ergo
ysr
parents:
2366
diff
changeset
|
3249 set_heap_size(); |
6854
fb19af007ffc
7189254: Change makefiles for more flexibility to override defaults
jprovino
parents:
6818
diff
changeset
|
3250 |
8001
db9981fd3124
8005915: Unify SERIALGC and INCLUDE_ALTERNATE_GCS
jprovino
parents:
7479
diff
changeset
|
3251 #if INCLUDE_ALL_GCS |
2368
dde920245681
6896099: Integrate CMS heap ergo with default heap sizing ergo
ysr
parents:
2366
diff
changeset
|
3252 // Set per-collector flags |
dde920245681
6896099: Integrate CMS heap ergo with default heap sizing ergo
ysr
parents:
2366
diff
changeset
|
3253 if (UseParallelGC || UseParallelOldGC) { |
dde920245681
6896099: Integrate CMS heap ergo with default heap sizing ergo
ysr
parents:
2366
diff
changeset
|
3254 set_parallel_gc_flags(); |
dde920245681
6896099: Integrate CMS heap ergo with default heap sizing ergo
ysr
parents:
2366
diff
changeset
|
3255 } 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
|
3256 set_cms_and_parnew_gc_flags(); |
2368
dde920245681
6896099: Integrate CMS heap ergo with default heap sizing ergo
ysr
parents:
2366
diff
changeset
|
3257 } 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
|
3258 set_parnew_gc_flags(); |
dde920245681
6896099: Integrate CMS heap ergo with default heap sizing ergo
ysr
parents:
2366
diff
changeset
|
3259 } else if (UseG1GC) { |
dde920245681
6896099: Integrate CMS heap ergo with default heap sizing ergo
ysr
parents:
2366
diff
changeset
|
3260 set_g1_gc_flags(); |
342
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
135
diff
changeset
|
3261 } |
7452
e0ab18eafbde
8003820: Deprecate untested and rarely used GC combinations
brutisso
parents:
7451
diff
changeset
|
3262 check_deprecated_gcs(); |
8001
db9981fd3124
8005915: Unify SERIALGC and INCLUDE_ALTERNATE_GCS
jprovino
parents:
7479
diff
changeset
|
3263 #else // INCLUDE_ALL_GCS |
0 | 3264 assert(verify_serial_gc_flags(), "SerialGC unset"); |
8001
db9981fd3124
8005915: Unify SERIALGC and INCLUDE_ALTERNATE_GCS
jprovino
parents:
7479
diff
changeset
|
3265 #endif // INCLUDE_ALL_GCS |
0 | 3266 |
3267 // Set bytecode rewriting flags | |
3268 set_bytecode_flags(); | |
3269 | |
3270 // Set flags if Aggressive optimization flags (-XX:+AggressiveOpts) enabled. | |
3271 set_aggressive_opts_flags(); | |
3272 | |
2239
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3273 // Turn off biased locking for locking debug mode flags, |
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3274 // 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
|
3275 // biased locking. |
2331 | 3276 if (UseHeavyMonitors |
3277 #ifdef COMPILER1 | |
3278 || !UseFastLocking | |
3279 #endif // COMPILER1 | |
3280 ) { | |
2239
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3281 if (!FLAG_IS_DEFAULT(UseBiasedLocking) && UseBiasedLocking) { |
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3282 // 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
|
3283 // can't enable biased locking here |
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3284 warning("Biased Locking is not supported with locking debug flags" |
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3285 "; ignoring UseBiasedLocking flag." ); |
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3286 } |
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3287 UseBiasedLocking = false; |
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3288 } |
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3289 |
0 | 3290 #ifdef CC_INTERP |
1131 | 3291 // Clear flags not supported by the C++ interpreter |
3292 FLAG_SET_DEFAULT(ProfileInterpreter, false); | |
0 | 3293 FLAG_SET_DEFAULT(UseBiasedLocking, false); |
1131 | 3294 LP64_ONLY(FLAG_SET_DEFAULT(UseCompressedOops, false)); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6628
diff
changeset
|
3295 LP64_ONLY(FLAG_SET_DEFAULT(UseCompressedKlassPointers, false)); |
1131 | 3296 #endif // CC_INTERP |
3297 | |
420
a1980da045cc
6462850: generate biased locking code in C2 ideal graph
kvn
parents:
416
diff
changeset
|
3298 #ifdef COMPILER2 |
a1980da045cc
6462850: generate biased locking code in C2 ideal graph
kvn
parents:
416
diff
changeset
|
3299 if (!UseBiasedLocking || EmitSync != 0) { |
a1980da045cc
6462850: generate biased locking code in C2 ideal graph
kvn
parents:
416
diff
changeset
|
3300 UseOptoBiasInlining = false; |
a1980da045cc
6462850: generate biased locking code in C2 ideal graph
kvn
parents:
416
diff
changeset
|
3301 } |
4777 | 3302 if (!EliminateLocks) { |
3303 EliminateNestedLocks = false; | |
3304 } | |
7473 | 3305 if (!Inline) { |
3306 IncrementalInline = false; | |
3307 } | |
3308 #ifndef PRODUCT | |
3309 if (!IncrementalInline) { | |
3310 AlwaysIncrementalInline = false; | |
3311 } | |
3312 #endif | |
3313 if (IncrementalInline && FLAG_IS_DEFAULT(MaxNodeLimit)) { | |
3314 // incremental inlining: bump MaxNodeLimit | |
3315 FLAG_SET_DEFAULT(MaxNodeLimit, (intx)75000); | |
3316 } | |
420
a1980da045cc
6462850: generate biased locking code in C2 ideal graph
kvn
parents:
416
diff
changeset
|
3317 #endif |
a1980da045cc
6462850: generate biased locking code in C2 ideal graph
kvn
parents:
416
diff
changeset
|
3318 |
1155
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1150
diff
changeset
|
3319 if (PrintAssembly && FLAG_IS_DEFAULT(DebugNonSafepoints)) { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1150
diff
changeset
|
3320 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
|
3321 DebugNonSafepoints = true; |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1150
diff
changeset
|
3322 } |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1150
diff
changeset
|
3323 |
1188
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents:
1161
diff
changeset
|
3324 #ifndef PRODUCT |
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents:
1161
diff
changeset
|
3325 if (CompileTheWorld) { |
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents:
1161
diff
changeset
|
3326 // 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
|
3327 if (FLAG_IS_DEFAULT(NmethodSweepFraction)) { |
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents:
1161
diff
changeset
|
3328 NmethodSweepFraction = 1; |
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents:
1161
diff
changeset
|
3329 } |
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents:
1161
diff
changeset
|
3330 } |
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents:
1161
diff
changeset
|
3331 #endif |
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents:
1161
diff
changeset
|
3332 |
0 | 3333 if (PrintCommandLineFlags) { |
4773 | 3334 CommandLineFlags::printSetFlags(tty); |
0 | 3335 } |
3336 | |
1681
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
3337 // Apply CPU specific policy for the BiasedLocking |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
3338 if (UseBiasedLocking) { |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
3339 if (!VM_Version::use_biased_locking() && |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
3340 !(FLAG_IS_CMDLINE(UseBiasedLocking))) { |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
3341 UseBiasedLocking = false; |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
3342 } |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
3343 } |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
3344 |
2302
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
3345 // 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
|
3346 // 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
|
3347 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
|
3348 bool set = false; |
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
3349 CommandLineFlags::wasSetOnCmdline("PauseAtExit", &set); |
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
3350 if (!set) { |
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
3351 FLAG_SET_DEFAULT(PauseAtExit, true); |
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
3352 } |
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
3353 } |
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
3354 |
0 | 3355 return JNI_OK; |
3356 } | |
3357 | |
7177
53715fb1597d
7198334: UseNUMA modifies system parameters on non-NUMA system
brutisso
parents:
6982
diff
changeset
|
3358 jint Arguments::adjust_after_os() { |
8001
db9981fd3124
8005915: Unify SERIALGC and INCLUDE_ALTERNATE_GCS
jprovino
parents:
7479
diff
changeset
|
3359 #if INCLUDE_ALL_GCS |
7177
53715fb1597d
7198334: UseNUMA modifies system parameters on non-NUMA system
brutisso
parents:
6982
diff
changeset
|
3360 if (UseParallelGC || UseParallelOldGC) { |
53715fb1597d
7198334: UseNUMA modifies system parameters on non-NUMA system
brutisso
parents:
6982
diff
changeset
|
3361 if (UseNUMA) { |
53715fb1597d
7198334: UseNUMA modifies system parameters on non-NUMA system
brutisso
parents:
6982
diff
changeset
|
3362 if (FLAG_IS_DEFAULT(MinHeapDeltaBytes)) { |
53715fb1597d
7198334: UseNUMA modifies system parameters on non-NUMA system
brutisso
parents:
6982
diff
changeset
|
3363 FLAG_SET_DEFAULT(MinHeapDeltaBytes, 64*M); |
53715fb1597d
7198334: UseNUMA modifies system parameters on non-NUMA system
brutisso
parents:
6982
diff
changeset
|
3364 } |
53715fb1597d
7198334: UseNUMA modifies system parameters on non-NUMA system
brutisso
parents:
6982
diff
changeset
|
3365 // 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
|
3366 // 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
|
3367 UseNUMAInterleaving = true; |
53715fb1597d
7198334: UseNUMA modifies system parameters on non-NUMA system
brutisso
parents:
6982
diff
changeset
|
3368 } |
53715fb1597d
7198334: UseNUMA modifies system parameters on non-NUMA system
brutisso
parents:
6982
diff
changeset
|
3369 } |
8001
db9981fd3124
8005915: Unify SERIALGC and INCLUDE_ALTERNATE_GCS
jprovino
parents:
7479
diff
changeset
|
3370 #endif // INCLUDE_ALL_GCS |
7177
53715fb1597d
7198334: UseNUMA modifies system parameters on non-NUMA system
brutisso
parents:
6982
diff
changeset
|
3371 return JNI_OK; |
53715fb1597d
7198334: UseNUMA modifies system parameters on non-NUMA system
brutisso
parents:
6982
diff
changeset
|
3372 } |
53715fb1597d
7198334: UseNUMA modifies system parameters on non-NUMA system
brutisso
parents:
6982
diff
changeset
|
3373 |
0 | 3374 int Arguments::PropertyList_count(SystemProperty* pl) { |
3375 int count = 0; | |
3376 while(pl != NULL) { | |
3377 count++; | |
3378 pl = pl->next(); | |
3379 } | |
3380 return count; | |
3381 } | |
3382 | |
3383 const char* Arguments::PropertyList_get_value(SystemProperty *pl, const char* key) { | |
3384 assert(key != NULL, "just checking"); | |
3385 SystemProperty* prop; | |
3386 for (prop = pl; prop != NULL; prop = prop->next()) { | |
3387 if (strcmp(key, prop->key()) == 0) return prop->value(); | |
3388 } | |
3389 return NULL; | |
3390 } | |
3391 | |
3392 const char* Arguments::PropertyList_get_key_at(SystemProperty *pl, int index) { | |
3393 int count = 0; | |
3394 const char* ret_val = NULL; | |
3395 | |
3396 while(pl != NULL) { | |
3397 if(count >= index) { | |
3398 ret_val = pl->key(); | |
3399 break; | |
3400 } | |
3401 count++; | |
3402 pl = pl->next(); | |
3403 } | |
3404 | |
3405 return ret_val; | |
3406 } | |
3407 | |
3408 char* Arguments::PropertyList_get_value_at(SystemProperty* pl, int index) { | |
3409 int count = 0; | |
3410 char* ret_val = NULL; | |
3411 | |
3412 while(pl != NULL) { | |
3413 if(count >= index) { | |
3414 ret_val = pl->value(); | |
3415 break; | |
3416 } | |
3417 count++; | |
3418 pl = pl->next(); | |
3419 } | |
3420 | |
3421 return ret_val; | |
3422 } | |
3423 | |
3424 void Arguments::PropertyList_add(SystemProperty** plist, SystemProperty *new_p) { | |
3425 SystemProperty* p = *plist; | |
3426 if (p == NULL) { | |
3427 *plist = new_p; | |
3428 } else { | |
3429 while (p->next() != NULL) { | |
3430 p = p->next(); | |
3431 } | |
3432 p->set_next(new_p); | |
3433 } | |
3434 } | |
3435 | |
3436 void Arguments::PropertyList_add(SystemProperty** plist, const char* k, char* v) { | |
3437 if (plist == NULL) | |
3438 return; | |
3439 | |
3440 SystemProperty* new_p = new SystemProperty(k, v, true); | |
3441 PropertyList_add(plist, new_p); | |
3442 } | |
3443 | |
3444 // This add maintains unique property key in the list. | |
691 | 3445 void Arguments::PropertyList_unique_add(SystemProperty** plist, const char* k, char* v, jboolean append) { |
0 | 3446 if (plist == NULL) |
3447 return; | |
3448 | |
3449 // If property key exist then update with new value. | |
3450 SystemProperty* prop; | |
3451 for (prop = *plist; prop != NULL; prop = prop->next()) { | |
3452 if (strcmp(k, prop->key()) == 0) { | |
691 | 3453 if (append) { |
3454 prop->append_value(v); | |
3455 } else { | |
3456 prop->set_value(v); | |
3457 } | |
0 | 3458 return; |
3459 } | |
3460 } | |
3461 | |
3462 PropertyList_add(plist, k, v); | |
3463 } | |
3464 | |
3465 #ifdef KERNEL | |
3466 char *Arguments::get_kernel_properties() { | |
3467 // Find properties starting with kernel and append them to string | |
3468 // We need to find out how long they are first because the URL's that they | |
3469 // might point to could get long. | |
3470 int length = 0; | |
3471 SystemProperty* prop; | |
3472 for (prop = _system_properties; prop != NULL; prop = prop->next()) { | |
3473 if (strncmp(prop->key(), "kernel.", 7 ) == 0) { | |
3474 length += (strlen(prop->key()) + strlen(prop->value()) + 5); // "-D =" | |
3475 } | |
3476 } | |
3477 // Add one for null terminator. | |
6197 | 3478 char *props = AllocateHeap(length + 1, mtInternal); |
0 | 3479 if (length != 0) { |
3480 int pos = 0; | |
3481 for (prop = _system_properties; prop != NULL; prop = prop->next()) { | |
3482 if (strncmp(prop->key(), "kernel.", 7 ) == 0) { | |
3483 jio_snprintf(&props[pos], length-pos, | |
3484 "-D%s=%s ", prop->key(), prop->value()); | |
3485 pos = strlen(props); | |
3486 } | |
3487 } | |
3488 } | |
3489 // null terminate props in case of null | |
3490 props[length] = '\0'; | |
3491 return props; | |
3492 } | |
3493 #endif // KERNEL | |
3494 | |
3495 // Copies src into buf, replacing "%%" with "%" and "%p" with pid | |
3496 // Returns true if all of the source pointed by src has been copied over to | |
3497 // the destination buffer pointed by buf. Otherwise, returns false. | |
3498 // Notes: | |
3499 // 1. If the length (buflen) of the destination buffer excluding the | |
3500 // NULL terminator character is not long enough for holding the expanded | |
3501 // pid characters, it also returns false instead of returning the partially | |
3502 // expanded one. | |
3503 // 2. The passed in "buflen" should be large enough to hold the null terminator. | |
3504 bool Arguments::copy_expand_pid(const char* src, size_t srclen, | |
3505 char* buf, size_t buflen) { | |
3506 const char* p = src; | |
3507 char* b = buf; | |
3508 const char* src_end = &src[srclen]; | |
3509 char* buf_end = &buf[buflen - 1]; | |
3510 | |
3511 while (p < src_end && b < buf_end) { | |
3512 if (*p == '%') { | |
3513 switch (*(++p)) { | |
3514 case '%': // "%%" ==> "%" | |
3515 *b++ = *p++; | |
3516 break; | |
3517 case 'p': { // "%p" ==> current process id | |
3518 // buf_end points to the character before the last character so | |
3519 // that we could write '\0' to the end of the buffer. | |
3520 size_t buf_sz = buf_end - b + 1; | |
3521 int ret = jio_snprintf(b, buf_sz, "%d", os::current_process_id()); | |
3522 | |
3523 // if jio_snprintf fails or the buffer is not long enough to hold | |
3524 // the expanded pid, returns false. | |
3525 if (ret < 0 || ret >= (int)buf_sz) { | |
3526 return false; | |
3527 } else { | |
3528 b += ret; | |
3529 assert(*b == '\0', "fail in copy_expand_pid"); | |
3530 if (p == src_end && b == buf_end + 1) { | |
3531 // reach the end of the buffer. | |
3532 return true; | |
3533 } | |
3534 } | |
3535 p++; | |
3536 break; | |
3537 } | |
3538 default : | |
3539 *b++ = '%'; | |
3540 } | |
3541 } else { | |
3542 *b++ = *p++; | |
3543 } | |
3544 } | |
3545 *b = '\0'; | |
3546 return (p == src_end); // return false if not all of the source was copied | |
3547 } |