Mercurial > hg > truffle
annotate src/share/vm/runtime/arguments.cpp @ 3251:eda9eb483d29
6841742: par compact - remove unused/unsupported options
Summary: ignore UseParallel{OldGCDensePrefix,OldGCCompacting,DensePrefixUpdate}
Reviewed-by: jwilhelm, brutisso
author | jcoomes |
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date | Thu, 07 Apr 2011 17:16:20 -0700 |
parents | 9c4f56ff88e9 |
children | f177ddd59c60 |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 1997, 2011, 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" | |
27 #include "compiler/compilerOracle.hpp" | |
28 #include "memory/allocation.inline.hpp" | |
29 #include "memory/cardTableRS.hpp" | |
30 #include "memory/referenceProcessor.hpp" | |
31 #include "memory/universe.inline.hpp" | |
32 #include "oops/oop.inline.hpp" | |
33 #include "prims/jvmtiExport.hpp" | |
34 #include "runtime/arguments.hpp" | |
35 #include "runtime/globals_extension.hpp" | |
36 #include "runtime/java.hpp" | |
37 #include "services/management.hpp" | |
38 #include "utilities/defaultStream.hpp" | |
39 #include "utilities/taskqueue.hpp" | |
40 #ifdef TARGET_ARCH_x86 | |
41 # include "vm_version_x86.hpp" | |
42 #endif | |
43 #ifdef TARGET_ARCH_sparc | |
44 # include "vm_version_sparc.hpp" | |
45 #endif | |
46 #ifdef TARGET_ARCH_zero | |
47 # include "vm_version_zero.hpp" | |
48 #endif | |
49 #ifdef TARGET_OS_FAMILY_linux | |
50 # include "os_linux.inline.hpp" | |
51 #endif | |
52 #ifdef TARGET_OS_FAMILY_solaris | |
53 # include "os_solaris.inline.hpp" | |
54 #endif | |
55 #ifdef TARGET_OS_FAMILY_windows | |
56 # include "os_windows.inline.hpp" | |
57 #endif | |
58 #ifndef SERIALGC | |
59 #include "gc_implementation/concurrentMarkSweep/compactibleFreeListSpace.hpp" | |
60 #endif | |
0 | 61 |
62 #define DEFAULT_VENDOR_URL_BUG "http://java.sun.com/webapps/bugreport/crash.jsp" | |
63 #define DEFAULT_JAVA_LAUNCHER "generic" | |
64 | |
65 char** Arguments::_jvm_flags_array = NULL; | |
66 int Arguments::_num_jvm_flags = 0; | |
67 char** Arguments::_jvm_args_array = NULL; | |
68 int Arguments::_num_jvm_args = 0; | |
69 char* Arguments::_java_command = NULL; | |
70 SystemProperty* Arguments::_system_properties = NULL; | |
71 const char* Arguments::_gc_log_filename = NULL; | |
72 bool Arguments::_has_profile = false; | |
73 bool Arguments::_has_alloc_profile = false; | |
74 uintx Arguments::_min_heap_size = 0; | |
75 Arguments::Mode Arguments::_mode = _mixed; | |
76 bool Arguments::_java_compiler = false; | |
77 bool Arguments::_xdebug_mode = false; | |
78 const char* Arguments::_java_vendor_url_bug = DEFAULT_VENDOR_URL_BUG; | |
79 const char* Arguments::_sun_java_launcher = DEFAULT_JAVA_LAUNCHER; | |
80 int Arguments::_sun_java_launcher_pid = -1; | |
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81 bool Arguments::_created_by_gamma_launcher = false; |
0 | 82 |
83 // These parameters are reset in method parse_vm_init_args(JavaVMInitArgs*) | |
84 bool Arguments::_AlwaysCompileLoopMethods = AlwaysCompileLoopMethods; | |
85 bool Arguments::_UseOnStackReplacement = UseOnStackReplacement; | |
86 bool Arguments::_BackgroundCompilation = BackgroundCompilation; | |
87 bool Arguments::_ClipInlining = ClipInlining; | |
88 | |
89 char* Arguments::SharedArchivePath = NULL; | |
90 | |
91 AgentLibraryList Arguments::_libraryList; | |
92 AgentLibraryList Arguments::_agentList; | |
93 | |
94 abort_hook_t Arguments::_abort_hook = NULL; | |
95 exit_hook_t Arguments::_exit_hook = NULL; | |
96 vfprintf_hook_t Arguments::_vfprintf_hook = NULL; | |
97 | |
98 | |
99 SystemProperty *Arguments::_java_ext_dirs = NULL; | |
100 SystemProperty *Arguments::_java_endorsed_dirs = NULL; | |
101 SystemProperty *Arguments::_sun_boot_library_path = NULL; | |
102 SystemProperty *Arguments::_java_library_path = NULL; | |
103 SystemProperty *Arguments::_java_home = NULL; | |
104 SystemProperty *Arguments::_java_class_path = NULL; | |
105 SystemProperty *Arguments::_sun_boot_class_path = NULL; | |
106 | |
107 char* Arguments::_meta_index_path = NULL; | |
108 char* Arguments::_meta_index_dir = NULL; | |
109 | |
110 static bool force_client_mode = false; | |
111 | |
112 // Check if head of 'option' matches 'name', and sets 'tail' remaining part of option string | |
113 | |
114 static bool match_option(const JavaVMOption *option, const char* name, | |
115 const char** tail) { | |
116 int len = (int)strlen(name); | |
117 if (strncmp(option->optionString, name, len) == 0) { | |
118 *tail = option->optionString + len; | |
119 return true; | |
120 } else { | |
121 return false; | |
122 } | |
123 } | |
124 | |
125 static void logOption(const char* opt) { | |
126 if (PrintVMOptions) { | |
127 jio_fprintf(defaultStream::output_stream(), "VM option '%s'\n", opt); | |
128 } | |
129 } | |
130 | |
131 // Process java launcher properties. | |
132 void Arguments::process_sun_java_launcher_properties(JavaVMInitArgs* args) { | |
133 // See if sun.java.launcher or sun.java.launcher.pid is defined. | |
134 // Must do this before setting up other system properties, | |
135 // as some of them may depend on launcher type. | |
136 for (int index = 0; index < args->nOptions; index++) { | |
137 const JavaVMOption* option = args->options + index; | |
138 const char* tail; | |
139 | |
140 if (match_option(option, "-Dsun.java.launcher=", &tail)) { | |
141 process_java_launcher_argument(tail, option->extraInfo); | |
142 continue; | |
143 } | |
144 if (match_option(option, "-Dsun.java.launcher.pid=", &tail)) { | |
145 _sun_java_launcher_pid = atoi(tail); | |
146 continue; | |
147 } | |
148 } | |
149 } | |
150 | |
151 // Initialize system properties key and value. | |
152 void Arguments::init_system_properties() { | |
153 | |
154 PropertyList_add(&_system_properties, new SystemProperty("java.vm.specification.name", | |
155 "Java Virtual Machine Specification", false)); | |
156 PropertyList_add(&_system_properties, new SystemProperty("java.vm.version", VM_Version::vm_release(), false)); | |
157 PropertyList_add(&_system_properties, new SystemProperty("java.vm.name", VM_Version::vm_name(), false)); | |
158 PropertyList_add(&_system_properties, new SystemProperty("java.vm.info", VM_Version::vm_info_string(), true)); | |
159 | |
160 // following are JVMTI agent writeable properties. | |
161 // Properties values are set to NULL and they are | |
162 // os specific they are initialized in os::init_system_properties_values(). | |
163 _java_ext_dirs = new SystemProperty("java.ext.dirs", NULL, true); | |
164 _java_endorsed_dirs = new SystemProperty("java.endorsed.dirs", NULL, true); | |
165 _sun_boot_library_path = new SystemProperty("sun.boot.library.path", NULL, true); | |
166 _java_library_path = new SystemProperty("java.library.path", NULL, true); | |
167 _java_home = new SystemProperty("java.home", NULL, true); | |
168 _sun_boot_class_path = new SystemProperty("sun.boot.class.path", NULL, true); | |
169 | |
170 _java_class_path = new SystemProperty("java.class.path", "", true); | |
171 | |
172 // Add to System Property list. | |
173 PropertyList_add(&_system_properties, _java_ext_dirs); | |
174 PropertyList_add(&_system_properties, _java_endorsed_dirs); | |
175 PropertyList_add(&_system_properties, _sun_boot_library_path); | |
176 PropertyList_add(&_system_properties, _java_library_path); | |
177 PropertyList_add(&_system_properties, _java_home); | |
178 PropertyList_add(&_system_properties, _java_class_path); | |
179 PropertyList_add(&_system_properties, _sun_boot_class_path); | |
180 | |
181 // Set OS specific system properties values | |
182 os::init_system_properties_values(); | |
183 } | |
184 | |
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185 |
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186 // Update/Initialize System properties after JDK version number is known |
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187 void Arguments::init_version_specific_system_properties() { |
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188 enum { bufsz = 16 }; |
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189 char buffer[bufsz]; |
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190 const char* spec_vendor = "Sun Microsystems Inc."; |
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191 uint32_t spec_version = 0; |
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192 |
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193 if (JDK_Version::is_gte_jdk17x_version()) { |
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194 spec_vendor = "Oracle Corporation"; |
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195 spec_version = JDK_Version::current().major_version(); |
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196 } |
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197 jio_snprintf(buffer, bufsz, "1." UINT32_FORMAT, spec_version); |
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198 |
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199 PropertyList_add(&_system_properties, |
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200 new SystemProperty("java.vm.specification.vendor", spec_vendor, false)); |
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201 PropertyList_add(&_system_properties, |
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202 new SystemProperty("java.vm.specification.version", buffer, false)); |
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203 PropertyList_add(&_system_properties, |
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204 new SystemProperty("java.vm.vendor", VM_Version::vm_vendor(), false)); |
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205 } |
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206 |
242 | 207 /** |
208 * Provide a slightly more user-friendly way of eliminating -XX flags. | |
209 * When a flag is eliminated, it can be added to this list in order to | |
210 * continue accepting this flag on the command-line, while issuing a warning | |
211 * and ignoring the value. Once the JDK version reaches the 'accept_until' | |
212 * limit, we flatly refuse to admit the existence of the flag. This allows | |
213 * a flag to die correctly over JDK releases using HSX. | |
214 */ | |
215 typedef struct { | |
216 const char* name; | |
217 JDK_Version obsoleted_in; // when the flag went away | |
218 JDK_Version accept_until; // which version to start denying the existence | |
219 } ObsoleteFlag; | |
0 | 220 |
242 | 221 static ObsoleteFlag obsolete_jvm_flags[] = { |
222 { "UseTrainGC", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
223 { "UseSpecialLargeObjectHandling", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
224 { "UseOversizedCarHandling", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
225 { "TraceCarAllocation", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
226 { "PrintTrainGCProcessingStats", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
227 { "LogOfCarSpaceSize", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
228 { "OversizedCarThreshold", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
229 { "MinTickInterval", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
230 { "DefaultTickInterval", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
231 { "MaxTickInterval", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
232 { "DelayTickAdjustment", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
233 { "ProcessingToTenuringRatio", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
234 { "MinTrainLength", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
235 { "AppendRatio", JDK_Version::jdk_update(6,10), JDK_Version::jdk(7) }, | |
1064 | 236 { "DefaultMaxRAM", JDK_Version::jdk_update(6,18), JDK_Version::jdk(7) }, |
237 { "DefaultInitialRAMFraction", | |
238 JDK_Version::jdk_update(6,18), JDK_Version::jdk(7) }, | |
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239 { "UseDepthFirstScavengeOrder", |
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240 JDK_Version::jdk_update(6,22), JDK_Version::jdk(7) }, |
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241 { "HandlePromotionFailure", |
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242 JDK_Version::jdk_update(6,24), JDK_Version::jdk(8) }, |
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243 { "MaxLiveObjectEvacuationRatio", |
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244 JDK_Version::jdk_update(6,24), JDK_Version::jdk(8) }, |
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245 { "ForceSharedSpaces", JDK_Version::jdk_update(6,25), JDK_Version::jdk(8) }, |
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246 { "UseParallelOldGCCompacting", |
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247 JDK_Version::jdk_update(6,27), JDK_Version::jdk(8) }, |
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248 { "UseParallelDensePrefixUpdate", |
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249 JDK_Version::jdk_update(6,27), JDK_Version::jdk(8) }, |
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250 { "UseParallelOldGCDensePrefix", |
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251 JDK_Version::jdk_update(6,27), JDK_Version::jdk(8) }, |
242 | 252 { NULL, JDK_Version(0), JDK_Version(0) } |
253 }; | |
254 | |
255 // Returns true if the flag is obsolete and fits into the range specified | |
256 // for being ignored. In the case that the flag is ignored, the 'version' | |
257 // value is filled in with the version number when the flag became | |
258 // obsolete so that that value can be displayed to the user. | |
259 bool Arguments::is_newly_obsolete(const char *s, JDK_Version* version) { | |
0 | 260 int i = 0; |
242 | 261 assert(version != NULL, "Must provide a version buffer"); |
262 while (obsolete_jvm_flags[i].name != NULL) { | |
263 const ObsoleteFlag& flag_status = obsolete_jvm_flags[i]; | |
0 | 264 // <flag>=xxx form |
265 // [-|+]<flag> form | |
242 | 266 if ((strncmp(flag_status.name, s, strlen(flag_status.name)) == 0) || |
0 | 267 ((s[0] == '+' || s[0] == '-') && |
242 | 268 (strncmp(flag_status.name, &s[1], strlen(flag_status.name)) == 0))) { |
269 if (JDK_Version::current().compare(flag_status.accept_until) == -1) { | |
270 *version = flag_status.obsoleted_in; | |
271 return true; | |
272 } | |
0 | 273 } |
274 i++; | |
275 } | |
276 return false; | |
277 } | |
278 | |
279 // Constructs the system class path (aka boot class path) from the following | |
280 // components, in order: | |
281 // | |
282 // prefix // from -Xbootclasspath/p:... | |
283 // endorsed // the expansion of -Djava.endorsed.dirs=... | |
284 // base // from os::get_system_properties() or -Xbootclasspath= | |
285 // suffix // from -Xbootclasspath/a:... | |
286 // | |
287 // java.endorsed.dirs is a list of directories; any jar or zip files in the | |
288 // directories are added to the sysclasspath just before the base. | |
289 // | |
290 // This could be AllStatic, but it isn't needed after argument processing is | |
291 // complete. | |
292 class SysClassPath: public StackObj { | |
293 public: | |
294 SysClassPath(const char* base); | |
295 ~SysClassPath(); | |
296 | |
297 inline void set_base(const char* base); | |
298 inline void add_prefix(const char* prefix); | |
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299 inline void add_suffix_to_prefix(const char* suffix); |
0 | 300 inline void add_suffix(const char* suffix); |
301 inline void reset_path(const char* base); | |
302 | |
303 // Expand the jar/zip files in each directory listed by the java.endorsed.dirs | |
304 // property. Must be called after all command-line arguments have been | |
305 // processed (in particular, -Djava.endorsed.dirs=...) and before calling | |
306 // combined_path(). | |
307 void expand_endorsed(); | |
308 | |
309 inline const char* get_base() const { return _items[_scp_base]; } | |
310 inline const char* get_prefix() const { return _items[_scp_prefix]; } | |
311 inline const char* get_suffix() const { return _items[_scp_suffix]; } | |
312 inline const char* get_endorsed() const { return _items[_scp_endorsed]; } | |
313 | |
314 // Combine all the components into a single c-heap-allocated string; caller | |
315 // must free the string if/when no longer needed. | |
316 char* combined_path(); | |
317 | |
318 private: | |
319 // Utility routines. | |
320 static char* add_to_path(const char* path, const char* str, bool prepend); | |
321 static char* add_jars_to_path(char* path, const char* directory); | |
322 | |
323 inline void reset_item_at(int index); | |
324 | |
325 // Array indices for the items that make up the sysclasspath. All except the | |
326 // base are allocated in the C heap and freed by this class. | |
327 enum { | |
328 _scp_prefix, // from -Xbootclasspath/p:... | |
329 _scp_endorsed, // the expansion of -Djava.endorsed.dirs=... | |
330 _scp_base, // the default sysclasspath | |
331 _scp_suffix, // from -Xbootclasspath/a:... | |
332 _scp_nitems // the number of items, must be last. | |
333 }; | |
334 | |
335 const char* _items[_scp_nitems]; | |
336 DEBUG_ONLY(bool _expansion_done;) | |
337 }; | |
338 | |
339 SysClassPath::SysClassPath(const char* base) { | |
340 memset(_items, 0, sizeof(_items)); | |
341 _items[_scp_base] = base; | |
342 DEBUG_ONLY(_expansion_done = false;) | |
343 } | |
344 | |
345 SysClassPath::~SysClassPath() { | |
346 // Free everything except the base. | |
347 for (int i = 0; i < _scp_nitems; ++i) { | |
348 if (i != _scp_base) reset_item_at(i); | |
349 } | |
350 DEBUG_ONLY(_expansion_done = false;) | |
351 } | |
352 | |
353 inline void SysClassPath::set_base(const char* base) { | |
354 _items[_scp_base] = base; | |
355 } | |
356 | |
357 inline void SysClassPath::add_prefix(const char* prefix) { | |
358 _items[_scp_prefix] = add_to_path(_items[_scp_prefix], prefix, true); | |
359 } | |
360 | |
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361 inline void SysClassPath::add_suffix_to_prefix(const char* suffix) { |
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362 _items[_scp_prefix] = add_to_path(_items[_scp_prefix], suffix, false); |
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363 } |
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364 |
0 | 365 inline void SysClassPath::add_suffix(const char* suffix) { |
366 _items[_scp_suffix] = add_to_path(_items[_scp_suffix], suffix, false); | |
367 } | |
368 | |
369 inline void SysClassPath::reset_item_at(int index) { | |
370 assert(index < _scp_nitems && index != _scp_base, "just checking"); | |
371 if (_items[index] != NULL) { | |
372 FREE_C_HEAP_ARRAY(char, _items[index]); | |
373 _items[index] = NULL; | |
374 } | |
375 } | |
376 | |
377 inline void SysClassPath::reset_path(const char* base) { | |
378 // Clear the prefix and suffix. | |
379 reset_item_at(_scp_prefix); | |
380 reset_item_at(_scp_suffix); | |
381 set_base(base); | |
382 } | |
383 | |
384 //------------------------------------------------------------------------------ | |
385 | |
386 void SysClassPath::expand_endorsed() { | |
387 assert(_items[_scp_endorsed] == NULL, "can only be called once."); | |
388 | |
389 const char* path = Arguments::get_property("java.endorsed.dirs"); | |
390 if (path == NULL) { | |
391 path = Arguments::get_endorsed_dir(); | |
392 assert(path != NULL, "no default for java.endorsed.dirs"); | |
393 } | |
394 | |
395 char* expanded_path = NULL; | |
396 const char separator = *os::path_separator(); | |
397 const char* const end = path + strlen(path); | |
398 while (path < end) { | |
399 const char* tmp_end = strchr(path, separator); | |
400 if (tmp_end == NULL) { | |
401 expanded_path = add_jars_to_path(expanded_path, path); | |
402 path = end; | |
403 } else { | |
404 char* dirpath = NEW_C_HEAP_ARRAY(char, tmp_end - path + 1); | |
405 memcpy(dirpath, path, tmp_end - path); | |
406 dirpath[tmp_end - path] = '\0'; | |
407 expanded_path = add_jars_to_path(expanded_path, dirpath); | |
408 FREE_C_HEAP_ARRAY(char, dirpath); | |
409 path = tmp_end + 1; | |
410 } | |
411 } | |
412 _items[_scp_endorsed] = expanded_path; | |
413 DEBUG_ONLY(_expansion_done = true;) | |
414 } | |
415 | |
416 // Combine the bootclasspath elements, some of which may be null, into a single | |
417 // c-heap-allocated string. | |
418 char* SysClassPath::combined_path() { | |
419 assert(_items[_scp_base] != NULL, "empty default sysclasspath"); | |
420 assert(_expansion_done, "must call expand_endorsed() first."); | |
421 | |
422 size_t lengths[_scp_nitems]; | |
423 size_t total_len = 0; | |
424 | |
425 const char separator = *os::path_separator(); | |
426 | |
427 // Get the lengths. | |
428 int i; | |
429 for (i = 0; i < _scp_nitems; ++i) { | |
430 if (_items[i] != NULL) { | |
431 lengths[i] = strlen(_items[i]); | |
432 // Include space for the separator char (or a NULL for the last item). | |
433 total_len += lengths[i] + 1; | |
434 } | |
435 } | |
436 assert(total_len > 0, "empty sysclasspath not allowed"); | |
437 | |
438 // Copy the _items to a single string. | |
439 char* cp = NEW_C_HEAP_ARRAY(char, total_len); | |
440 char* cp_tmp = cp; | |
441 for (i = 0; i < _scp_nitems; ++i) { | |
442 if (_items[i] != NULL) { | |
443 memcpy(cp_tmp, _items[i], lengths[i]); | |
444 cp_tmp += lengths[i]; | |
445 *cp_tmp++ = separator; | |
446 } | |
447 } | |
448 *--cp_tmp = '\0'; // Replace the extra separator. | |
449 return cp; | |
450 } | |
451 | |
452 // Note: path must be c-heap-allocated (or NULL); it is freed if non-null. | |
453 char* | |
454 SysClassPath::add_to_path(const char* path, const char* str, bool prepend) { | |
455 char *cp; | |
456 | |
457 assert(str != NULL, "just checking"); | |
458 if (path == NULL) { | |
459 size_t len = strlen(str) + 1; | |
460 cp = NEW_C_HEAP_ARRAY(char, len); | |
461 memcpy(cp, str, len); // copy the trailing null | |
462 } else { | |
463 const char separator = *os::path_separator(); | |
464 size_t old_len = strlen(path); | |
465 size_t str_len = strlen(str); | |
466 size_t len = old_len + str_len + 2; | |
467 | |
468 if (prepend) { | |
469 cp = NEW_C_HEAP_ARRAY(char, len); | |
470 char* cp_tmp = cp; | |
471 memcpy(cp_tmp, str, str_len); | |
472 cp_tmp += str_len; | |
473 *cp_tmp = separator; | |
474 memcpy(++cp_tmp, path, old_len + 1); // copy the trailing null | |
475 FREE_C_HEAP_ARRAY(char, path); | |
476 } else { | |
477 cp = REALLOC_C_HEAP_ARRAY(char, path, len); | |
478 char* cp_tmp = cp + old_len; | |
479 *cp_tmp = separator; | |
480 memcpy(++cp_tmp, str, str_len + 1); // copy the trailing null | |
481 } | |
482 } | |
483 return cp; | |
484 } | |
485 | |
486 // Scan the directory and append any jar or zip files found to path. | |
487 // Note: path must be c-heap-allocated (or NULL); it is freed if non-null. | |
488 char* SysClassPath::add_jars_to_path(char* path, const char* directory) { | |
489 DIR* dir = os::opendir(directory); | |
490 if (dir == NULL) return path; | |
491 | |
492 char dir_sep[2] = { '\0', '\0' }; | |
493 size_t directory_len = strlen(directory); | |
494 const char fileSep = *os::file_separator(); | |
495 if (directory[directory_len - 1] != fileSep) dir_sep[0] = fileSep; | |
496 | |
497 /* Scan the directory for jars/zips, appending them to path. */ | |
498 struct dirent *entry; | |
499 char *dbuf = NEW_C_HEAP_ARRAY(char, os::readdir_buf_size(directory)); | |
500 while ((entry = os::readdir(dir, (dirent *) dbuf)) != NULL) { | |
501 const char* name = entry->d_name; | |
502 const char* ext = name + strlen(name) - 4; | |
503 bool isJarOrZip = ext > name && | |
504 (os::file_name_strcmp(ext, ".jar") == 0 || | |
505 os::file_name_strcmp(ext, ".zip") == 0); | |
506 if (isJarOrZip) { | |
507 char* jarpath = NEW_C_HEAP_ARRAY(char, directory_len + 2 + strlen(name)); | |
508 sprintf(jarpath, "%s%s%s", directory, dir_sep, name); | |
509 path = add_to_path(path, jarpath, false); | |
510 FREE_C_HEAP_ARRAY(char, jarpath); | |
511 } | |
512 } | |
513 FREE_C_HEAP_ARRAY(char, dbuf); | |
514 os::closedir(dir); | |
515 return path; | |
516 } | |
517 | |
518 // Parses a memory size specification string. | |
489
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519 static bool atomull(const char *s, julong* result) { |
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520 julong n = 0; |
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521 int args_read = sscanf(s, os::julong_format_specifier(), &n); |
0 | 522 if (args_read != 1) { |
523 return false; | |
524 } | |
525 while (*s != '\0' && isdigit(*s)) { | |
526 s++; | |
527 } | |
528 // 4705540: illegal if more characters are found after the first non-digit | |
529 if (strlen(s) > 1) { | |
530 return false; | |
531 } | |
532 switch (*s) { | |
533 case 'T': case 't': | |
534 *result = n * G * K; | |
489
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535 // Check for overflow. |
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536 if (*result/((julong)G * K) != n) return false; |
0 | 537 return true; |
538 case 'G': case 'g': | |
539 *result = n * G; | |
489
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540 if (*result/G != n) return false; |
0 | 541 return true; |
542 case 'M': case 'm': | |
543 *result = n * M; | |
489
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544 if (*result/M != n) return false; |
0 | 545 return true; |
546 case 'K': case 'k': | |
547 *result = n * K; | |
489
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548 if (*result/K != n) return false; |
0 | 549 return true; |
550 case '\0': | |
551 *result = n; | |
552 return true; | |
553 default: | |
554 return false; | |
555 } | |
556 } | |
557 | |
489
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558 Arguments::ArgsRange Arguments::check_memory_size(julong size, julong min_size) { |
0 | 559 if (size < min_size) return arg_too_small; |
560 // Check that size will fit in a size_t (only relevant on 32-bit) | |
489
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561 if (size > max_uintx) return arg_too_big; |
0 | 562 return arg_in_range; |
563 } | |
564 | |
565 // Describe an argument out of range error | |
566 void Arguments::describe_range_error(ArgsRange errcode) { | |
567 switch(errcode) { | |
568 case arg_too_big: | |
569 jio_fprintf(defaultStream::error_stream(), | |
570 "The specified size exceeds the maximum " | |
571 "representable size.\n"); | |
572 break; | |
573 case arg_too_small: | |
574 case arg_unreadable: | |
575 case arg_in_range: | |
576 // do nothing for now | |
577 break; | |
578 default: | |
579 ShouldNotReachHere(); | |
580 } | |
581 } | |
582 | |
583 static bool set_bool_flag(char* name, bool value, FlagValueOrigin origin) { | |
584 return CommandLineFlags::boolAtPut(name, &value, origin); | |
585 } | |
586 | |
587 static bool set_fp_numeric_flag(char* name, char* value, FlagValueOrigin origin) { | |
588 double v; | |
589 if (sscanf(value, "%lf", &v) != 1) { | |
590 return false; | |
591 } | |
592 | |
593 if (CommandLineFlags::doubleAtPut(name, &v, origin)) { | |
594 return true; | |
595 } | |
596 return false; | |
597 } | |
598 | |
599 static bool set_numeric_flag(char* name, char* value, FlagValueOrigin origin) { | |
489
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600 julong v; |
0 | 601 intx intx_v; |
602 bool is_neg = false; | |
489
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603 // Check the sign first since atomull() parses only unsigned values. |
0 | 604 if (*value == '-') { |
605 if (!CommandLineFlags::intxAt(name, &intx_v)) { | |
606 return false; | |
607 } | |
608 value++; | |
609 is_neg = true; | |
610 } | |
489
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611 if (!atomull(value, &v)) { |
0 | 612 return false; |
613 } | |
614 intx_v = (intx) v; | |
615 if (is_neg) { | |
616 intx_v = -intx_v; | |
617 } | |
618 if (CommandLineFlags::intxAtPut(name, &intx_v, origin)) { | |
619 return true; | |
620 } | |
621 uintx uintx_v = (uintx) v; | |
622 if (!is_neg && CommandLineFlags::uintxAtPut(name, &uintx_v, origin)) { | |
623 return true; | |
624 } | |
1064 | 625 uint64_t uint64_t_v = (uint64_t) v; |
626 if (!is_neg && CommandLineFlags::uint64_tAtPut(name, &uint64_t_v, origin)) { | |
627 return true; | |
628 } | |
0 | 629 return false; |
630 } | |
631 | |
632 static bool set_string_flag(char* name, const char* value, FlagValueOrigin origin) { | |
633 if (!CommandLineFlags::ccstrAtPut(name, &value, origin)) return false; | |
634 // Contract: CommandLineFlags always returns a pointer that needs freeing. | |
635 FREE_C_HEAP_ARRAY(char, value); | |
636 return true; | |
637 } | |
638 | |
639 static bool append_to_string_flag(char* name, const char* new_value, FlagValueOrigin origin) { | |
640 const char* old_value = ""; | |
641 if (!CommandLineFlags::ccstrAt(name, &old_value)) return false; | |
642 size_t old_len = old_value != NULL ? strlen(old_value) : 0; | |
643 size_t new_len = strlen(new_value); | |
644 const char* value; | |
645 char* free_this_too = NULL; | |
646 if (old_len == 0) { | |
647 value = new_value; | |
648 } else if (new_len == 0) { | |
649 value = old_value; | |
650 } else { | |
651 char* buf = NEW_C_HEAP_ARRAY(char, old_len + 1 + new_len + 1); | |
652 // each new setting adds another LINE to the switch: | |
653 sprintf(buf, "%s\n%s", old_value, new_value); | |
654 value = buf; | |
655 free_this_too = buf; | |
656 } | |
657 (void) CommandLineFlags::ccstrAtPut(name, &value, origin); | |
658 // CommandLineFlags always returns a pointer that needs freeing. | |
659 FREE_C_HEAP_ARRAY(char, value); | |
660 if (free_this_too != NULL) { | |
661 // CommandLineFlags made its own copy, so I must delete my own temp. buffer. | |
662 FREE_C_HEAP_ARRAY(char, free_this_too); | |
663 } | |
664 return true; | |
665 } | |
666 | |
667 bool Arguments::parse_argument(const char* arg, FlagValueOrigin origin) { | |
668 | |
669 // range of acceptable characters spelled out for portability reasons | |
670 #define NAME_RANGE "[abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789_]" | |
671 #define BUFLEN 255 | |
672 char name[BUFLEN+1]; | |
673 char dummy; | |
674 | |
675 if (sscanf(arg, "-%" XSTR(BUFLEN) NAME_RANGE "%c", name, &dummy) == 1) { | |
676 return set_bool_flag(name, false, origin); | |
677 } | |
678 if (sscanf(arg, "+%" XSTR(BUFLEN) NAME_RANGE "%c", name, &dummy) == 1) { | |
679 return set_bool_flag(name, true, origin); | |
680 } | |
681 | |
682 char punct; | |
683 if (sscanf(arg, "%" XSTR(BUFLEN) NAME_RANGE "%c", name, &punct) == 2 && punct == '=') { | |
684 const char* value = strchr(arg, '=') + 1; | |
685 Flag* flag = Flag::find_flag(name, strlen(name)); | |
686 if (flag != NULL && flag->is_ccstr()) { | |
687 if (flag->ccstr_accumulates()) { | |
688 return append_to_string_flag(name, value, origin); | |
689 } else { | |
690 if (value[0] == '\0') { | |
691 value = NULL; | |
692 } | |
693 return set_string_flag(name, value, origin); | |
694 } | |
695 } | |
696 } | |
697 | |
698 if (sscanf(arg, "%" XSTR(BUFLEN) NAME_RANGE ":%c", name, &punct) == 2 && punct == '=') { | |
699 const char* value = strchr(arg, '=') + 1; | |
700 // -XX:Foo:=xxx will reset the string flag to the given value. | |
701 if (value[0] == '\0') { | |
702 value = NULL; | |
703 } | |
704 return set_string_flag(name, value, origin); | |
705 } | |
706 | |
707 #define SIGNED_FP_NUMBER_RANGE "[-0123456789.]" | |
708 #define SIGNED_NUMBER_RANGE "[-0123456789]" | |
709 #define NUMBER_RANGE "[0123456789]" | |
710 char value[BUFLEN + 1]; | |
711 char value2[BUFLEN + 1]; | |
712 if (sscanf(arg, "%" XSTR(BUFLEN) NAME_RANGE "=" "%" XSTR(BUFLEN) SIGNED_NUMBER_RANGE "." "%" XSTR(BUFLEN) NUMBER_RANGE "%c", name, value, value2, &dummy) == 3) { | |
713 // Looks like a floating-point number -- try again with more lenient format string | |
714 if (sscanf(arg, "%" XSTR(BUFLEN) NAME_RANGE "=" "%" XSTR(BUFLEN) SIGNED_FP_NUMBER_RANGE "%c", name, value, &dummy) == 2) { | |
715 return set_fp_numeric_flag(name, value, origin); | |
716 } | |
717 } | |
718 | |
719 #define VALUE_RANGE "[-kmgtKMGT0123456789]" | |
720 if (sscanf(arg, "%" XSTR(BUFLEN) NAME_RANGE "=" "%" XSTR(BUFLEN) VALUE_RANGE "%c", name, value, &dummy) == 2) { | |
721 return set_numeric_flag(name, value, origin); | |
722 } | |
723 | |
724 return false; | |
725 } | |
726 | |
727 void Arguments::add_string(char*** bldarray, int* count, const char* arg) { | |
728 assert(bldarray != NULL, "illegal argument"); | |
729 | |
730 if (arg == NULL) { | |
731 return; | |
732 } | |
733 | |
734 int index = *count; | |
735 | |
736 // expand the array and add arg to the last element | |
737 (*count)++; | |
738 if (*bldarray == NULL) { | |
739 *bldarray = NEW_C_HEAP_ARRAY(char*, *count); | |
740 } else { | |
741 *bldarray = REALLOC_C_HEAP_ARRAY(char*, *bldarray, *count); | |
742 } | |
743 (*bldarray)[index] = strdup(arg); | |
744 } | |
745 | |
746 void Arguments::build_jvm_args(const char* arg) { | |
747 add_string(&_jvm_args_array, &_num_jvm_args, arg); | |
748 } | |
749 | |
750 void Arguments::build_jvm_flags(const char* arg) { | |
751 add_string(&_jvm_flags_array, &_num_jvm_flags, arg); | |
752 } | |
753 | |
754 // utility function to return a string that concatenates all | |
755 // strings in a given char** array | |
756 const char* Arguments::build_resource_string(char** args, int count) { | |
757 if (args == NULL || count == 0) { | |
758 return NULL; | |
759 } | |
760 size_t length = strlen(args[0]) + 1; // add 1 for the null terminator | |
761 for (int i = 1; i < count; i++) { | |
762 length += strlen(args[i]) + 1; // add 1 for a space | |
763 } | |
764 char* s = NEW_RESOURCE_ARRAY(char, length); | |
765 strcpy(s, args[0]); | |
766 for (int j = 1; j < count; j++) { | |
767 strcat(s, " "); | |
768 strcat(s, args[j]); | |
769 } | |
770 return (const char*) s; | |
771 } | |
772 | |
773 void Arguments::print_on(outputStream* st) { | |
774 st->print_cr("VM Arguments:"); | |
775 if (num_jvm_flags() > 0) { | |
776 st->print("jvm_flags: "); print_jvm_flags_on(st); | |
777 } | |
778 if (num_jvm_args() > 0) { | |
779 st->print("jvm_args: "); print_jvm_args_on(st); | |
780 } | |
781 st->print_cr("java_command: %s", java_command() ? java_command() : "<unknown>"); | |
782 st->print_cr("Launcher Type: %s", _sun_java_launcher); | |
783 } | |
784 | |
785 void Arguments::print_jvm_flags_on(outputStream* st) { | |
786 if (_num_jvm_flags > 0) { | |
787 for (int i=0; i < _num_jvm_flags; i++) { | |
788 st->print("%s ", _jvm_flags_array[i]); | |
789 } | |
790 st->print_cr(""); | |
791 } | |
792 } | |
793 | |
794 void Arguments::print_jvm_args_on(outputStream* st) { | |
795 if (_num_jvm_args > 0) { | |
796 for (int i=0; i < _num_jvm_args; i++) { | |
797 st->print("%s ", _jvm_args_array[i]); | |
798 } | |
799 st->print_cr(""); | |
800 } | |
801 } | |
802 | |
242 | 803 bool Arguments::process_argument(const char* arg, |
804 jboolean ignore_unrecognized, FlagValueOrigin origin) { | |
805 | |
806 JDK_Version since = JDK_Version(); | |
0 | 807 |
3250 | 808 if (parse_argument(arg, origin) || ignore_unrecognized) { |
809 return true; | |
0 | 810 } |
3250 | 811 |
812 const char * const argname = *arg == '+' || *arg == '-' ? arg + 1 : arg; | |
813 if (is_newly_obsolete(arg, &since)) { | |
814 char version[256]; | |
815 since.to_string(version, sizeof(version)); | |
816 warning("ignoring option %s; support was removed in %s", argname, version); | |
817 return true; | |
818 } | |
819 | |
820 jio_fprintf(defaultStream::error_stream(), | |
821 "Unrecognized VM option '%s'\n", argname); | |
822 // allow for commandline "commenting out" options like -XX:#+Verbose | |
823 return arg[0] == '#'; | |
0 | 824 } |
825 | |
826 bool Arguments::process_settings_file(const char* file_name, bool should_exist, jboolean ignore_unrecognized) { | |
827 FILE* stream = fopen(file_name, "rb"); | |
828 if (stream == NULL) { | |
829 if (should_exist) { | |
830 jio_fprintf(defaultStream::error_stream(), | |
831 "Could not open settings file %s\n", file_name); | |
832 return false; | |
833 } else { | |
834 return true; | |
835 } | |
836 } | |
837 | |
838 char token[1024]; | |
839 int pos = 0; | |
840 | |
841 bool in_white_space = true; | |
842 bool in_comment = false; | |
843 bool in_quote = false; | |
844 char quote_c = 0; | |
845 bool result = true; | |
846 | |
847 int c = getc(stream); | |
848 while(c != EOF) { | |
849 if (in_white_space) { | |
850 if (in_comment) { | |
851 if (c == '\n') in_comment = false; | |
852 } else { | |
853 if (c == '#') in_comment = true; | |
854 else if (!isspace(c)) { | |
855 in_white_space = false; | |
856 token[pos++] = c; | |
857 } | |
858 } | |
859 } else { | |
860 if (c == '\n' || (!in_quote && isspace(c))) { | |
861 // token ends at newline, or at unquoted whitespace | |
862 // this allows a way to include spaces in string-valued options | |
863 token[pos] = '\0'; | |
864 logOption(token); | |
865 result &= process_argument(token, ignore_unrecognized, CONFIG_FILE); | |
866 build_jvm_flags(token); | |
867 pos = 0; | |
868 in_white_space = true; | |
869 in_quote = false; | |
870 } else if (!in_quote && (c == '\'' || c == '"')) { | |
871 in_quote = true; | |
872 quote_c = c; | |
873 } else if (in_quote && (c == quote_c)) { | |
874 in_quote = false; | |
875 } else { | |
876 token[pos++] = c; | |
877 } | |
878 } | |
879 c = getc(stream); | |
880 } | |
881 if (pos > 0) { | |
882 token[pos] = '\0'; | |
883 result &= process_argument(token, ignore_unrecognized, CONFIG_FILE); | |
884 build_jvm_flags(token); | |
885 } | |
886 fclose(stream); | |
887 return result; | |
888 } | |
889 | |
890 //============================================================================================================= | |
891 // Parsing of properties (-D) | |
892 | |
893 const char* Arguments::get_property(const char* key) { | |
894 return PropertyList_get_value(system_properties(), key); | |
895 } | |
896 | |
897 bool Arguments::add_property(const char* prop) { | |
898 const char* eq = strchr(prop, '='); | |
899 char* key; | |
900 // ns must be static--its address may be stored in a SystemProperty object. | |
901 const static char ns[1] = {0}; | |
902 char* value = (char *)ns; | |
903 | |
904 size_t key_len = (eq == NULL) ? strlen(prop) : (eq - prop); | |
905 key = AllocateHeap(key_len + 1, "add_property"); | |
906 strncpy(key, prop, key_len); | |
907 key[key_len] = '\0'; | |
908 | |
909 if (eq != NULL) { | |
910 size_t value_len = strlen(prop) - key_len - 1; | |
911 value = AllocateHeap(value_len + 1, "add_property"); | |
912 strncpy(value, &prop[key_len + 1], value_len + 1); | |
913 } | |
914 | |
915 if (strcmp(key, "java.compiler") == 0) { | |
916 process_java_compiler_argument(value); | |
917 FreeHeap(key); | |
918 if (eq != NULL) { | |
919 FreeHeap(value); | |
920 } | |
921 return true; | |
691 | 922 } else if (strcmp(key, "sun.java.command") == 0) { |
0 | 923 _java_command = value; |
924 | |
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925 // Record value in Arguments, but let it get passed to Java. |
691 | 926 } else if (strcmp(key, "sun.java.launcher.pid") == 0) { |
0 | 927 // launcher.pid property is private and is processed |
928 // in process_sun_java_launcher_properties(); | |
929 // the sun.java.launcher property is passed on to the java application | |
930 FreeHeap(key); | |
931 if (eq != NULL) { | |
932 FreeHeap(value); | |
933 } | |
934 return true; | |
691 | 935 } else if (strcmp(key, "java.vendor.url.bug") == 0) { |
0 | 936 // save it in _java_vendor_url_bug, so JVM fatal error handler can access |
937 // its value without going through the property list or making a Java call. | |
938 _java_vendor_url_bug = value; | |
691 | 939 } else if (strcmp(key, "sun.boot.library.path") == 0) { |
940 PropertyList_unique_add(&_system_properties, key, value, true); | |
941 return true; | |
0 | 942 } |
943 // Create new property and add at the end of the list | |
944 PropertyList_unique_add(&_system_properties, key, value); | |
945 return true; | |
946 } | |
947 | |
948 //=========================================================================================================== | |
949 // Setting int/mixed/comp mode flags | |
950 | |
951 void Arguments::set_mode_flags(Mode mode) { | |
952 // Set up default values for all flags. | |
953 // If you add a flag to any of the branches below, | |
954 // add a default value for it here. | |
955 set_java_compiler(false); | |
956 _mode = mode; | |
957 | |
958 // Ensure Agent_OnLoad has the correct initial values. | |
959 // This may not be the final mode; mode may change later in onload phase. | |
960 PropertyList_unique_add(&_system_properties, "java.vm.info", | |
691 | 961 (char*)Abstract_VM_Version::vm_info_string(), false); |
0 | 962 |
963 UseInterpreter = true; | |
964 UseCompiler = true; | |
965 UseLoopCounter = true; | |
966 | |
967 // Default values may be platform/compiler dependent - | |
968 // use the saved values | |
969 ClipInlining = Arguments::_ClipInlining; | |
970 AlwaysCompileLoopMethods = Arguments::_AlwaysCompileLoopMethods; | |
971 UseOnStackReplacement = Arguments::_UseOnStackReplacement; | |
972 BackgroundCompilation = Arguments::_BackgroundCompilation; | |
973 | |
974 // Change from defaults based on mode | |
975 switch (mode) { | |
976 default: | |
977 ShouldNotReachHere(); | |
978 break; | |
979 case _int: | |
980 UseCompiler = false; | |
981 UseLoopCounter = false; | |
982 AlwaysCompileLoopMethods = false; | |
983 UseOnStackReplacement = false; | |
984 break; | |
985 case _mixed: | |
986 // same as default | |
987 break; | |
988 case _comp: | |
989 UseInterpreter = false; | |
990 BackgroundCompilation = false; | |
991 ClipInlining = false; | |
992 break; | |
993 } | |
994 } | |
995 | |
996 // Conflict: required to use shared spaces (-Xshare:on), but | |
997 // incompatible command line options were chosen. | |
998 | |
999 static void no_shared_spaces() { | |
1000 if (RequireSharedSpaces) { | |
1001 jio_fprintf(defaultStream::error_stream(), | |
1002 "Class data sharing is inconsistent with other specified options.\n"); | |
1003 vm_exit_during_initialization("Unable to use shared archive.", NULL); | |
1004 } else { | |
1005 FLAG_SET_DEFAULT(UseSharedSpaces, false); | |
1006 } | |
1007 } | |
1008 | |
1783 | 1009 void Arguments::set_tiered_flags() { |
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1010 // With tiered, set default policy to AdvancedThresholdPolicy, which is 3. |
1783 | 1011 if (FLAG_IS_DEFAULT(CompilationPolicyChoice)) { |
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1012 FLAG_SET_DEFAULT(CompilationPolicyChoice, 3); |
1783 | 1013 } |
1014 if (CompilationPolicyChoice < 2) { | |
1015 vm_exit_during_initialization( | |
1016 "Incompatible compilation policy selected", NULL); | |
1017 } | |
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1018 // Increase the code cache size - tiered compiles a lot more. |
1783 | 1019 if (FLAG_IS_DEFAULT(ReservedCodeCacheSize)) { |
1020 FLAG_SET_DEFAULT(ReservedCodeCacheSize, ReservedCodeCacheSize * 2); | |
1021 } | |
1022 } | |
1023 | |
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1024 #ifndef KERNEL |
0 | 1025 // If the user has chosen ParallelGCThreads > 0, we set UseParNewGC |
1026 // if it's not explictly set or unset. If the user has chosen | |
1027 // UseParNewGC and not explicitly set ParallelGCThreads we | |
1028 // set it, unless this is a single cpu machine. | |
1029 void Arguments::set_parnew_gc_flags() { | |
1064 | 1030 assert(!UseSerialGC && !UseParallelOldGC && !UseParallelGC && !UseG1GC, |
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1031 "control point invariant"); |
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1032 assert(UseParNewGC, "Error"); |
0 | 1033 |
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1034 // Turn off AdaptiveSizePolicy by default for parnew until it is |
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1035 // complete. |
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1036 if (FLAG_IS_DEFAULT(UseAdaptiveSizePolicy)) { |
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1037 FLAG_SET_DEFAULT(UseAdaptiveSizePolicy, false); |
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1038 } |
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1039 |
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1040 if (ParallelGCThreads == 0) { |
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1041 FLAG_SET_DEFAULT(ParallelGCThreads, |
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1042 Abstract_VM_Version::parallel_worker_threads()); |
1064 | 1043 if (ParallelGCThreads == 1) { |
0 | 1044 FLAG_SET_DEFAULT(UseParNewGC, false); |
1064 | 1045 FLAG_SET_DEFAULT(ParallelGCThreads, 0); |
0 | 1046 } |
1047 } | |
1064 | 1048 if (UseParNewGC) { |
1049 // CDS doesn't work with ParNew yet | |
0 | 1050 no_shared_spaces(); |
1051 | |
695 | 1052 // By default YoungPLABSize and OldPLABSize are set to 4096 and 1024 respectively, |
0 | 1053 // these settings are default for Parallel Scavenger. For ParNew+Tenured configuration |
1054 // we set them to 1024 and 1024. | |
1055 // See CR 6362902. | |
1056 if (FLAG_IS_DEFAULT(YoungPLABSize)) { | |
1057 FLAG_SET_DEFAULT(YoungPLABSize, (intx)1024); | |
1058 } | |
1059 if (FLAG_IS_DEFAULT(OldPLABSize)) { | |
1060 FLAG_SET_DEFAULT(OldPLABSize, (intx)1024); | |
1061 } | |
1062 | |
1064 | 1063 // AlwaysTenure flag should make ParNew promote all at first collection. |
0 | 1064 // See CR 6362902. |
1065 if (AlwaysTenure) { | |
1066 FLAG_SET_CMDLINE(intx, MaxTenuringThreshold, 0); | |
1067 } | |
695 | 1068 // When using compressed oops, we use local overflow stacks, |
1069 // rather than using a global overflow list chained through | |
1070 // the klass word of the object's pre-image. | |
1071 if (UseCompressedOops && !ParGCUseLocalOverflow) { | |
1072 if (!FLAG_IS_DEFAULT(ParGCUseLocalOverflow)) { | |
1073 warning("Forcing +ParGCUseLocalOverflow: needed if using compressed references"); | |
1074 } | |
1075 FLAG_SET_DEFAULT(ParGCUseLocalOverflow, true); | |
1076 } | |
1077 assert(ParGCUseLocalOverflow || !UseCompressedOops, "Error"); | |
0 | 1078 } |
1079 } | |
1080 | |
1081 // Adjust some sizes to suit CMS and/or ParNew needs; these work well on | |
1082 // sparc/solaris for certain applications, but would gain from | |
1083 // further optimization and tuning efforts, and would almost | |
1084 // certainly gain from analysis of platform and environment. | |
1085 void Arguments::set_cms_and_parnew_gc_flags() { | |
1064 | 1086 assert(!UseSerialGC && !UseParallelOldGC && !UseParallelGC, "Error"); |
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1087 assert(UseConcMarkSweepGC, "CMS is expected to be on here"); |
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1088 |
0 | 1089 // If we are using CMS, we prefer to UseParNewGC, |
1090 // unless explicitly forbidden. | |
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1091 if (FLAG_IS_DEFAULT(UseParNewGC)) { |
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1092 FLAG_SET_ERGO(bool, UseParNewGC, true); |
0 | 1093 } |
1094 | |
1095 // Turn off AdaptiveSizePolicy by default for cms until it is | |
10
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1096 // complete. |
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1097 if (FLAG_IS_DEFAULT(UseAdaptiveSizePolicy)) { |
0 | 1098 FLAG_SET_DEFAULT(UseAdaptiveSizePolicy, false); |
1099 } | |
1100 | |
1101 // In either case, adjust ParallelGCThreads and/or UseParNewGC | |
1102 // as needed. | |
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1103 if (UseParNewGC) { |
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1104 set_parnew_gc_flags(); |
0 | 1105 } |
1106 | |
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1107 // MaxHeapSize is aligned down in collectorPolicy |
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1108 size_t max_heap = align_size_down(MaxHeapSize, |
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1109 CardTableRS::ct_max_alignment_constraint()); |
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1110 |
0 | 1111 // Now make adjustments for CMS |
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1112 intx tenuring_default = (intx)6; |
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1113 size_t young_gen_per_worker = CMSYoungGenPerWorker; |
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1114 |
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1115 // Preferred young gen size for "short" pauses: |
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1116 // upper bound depends on # of threads and NewRatio. |
0 | 1117 const uintx parallel_gc_threads = |
1118 (ParallelGCThreads == 0 ? 1 : ParallelGCThreads); | |
1119 const size_t preferred_max_new_size_unaligned = | |
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1120 MIN2(max_heap/(NewRatio+1), ScaleForWordSize(young_gen_per_worker * parallel_gc_threads)); |
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1121 size_t preferred_max_new_size = |
0 | 1122 align_size_up(preferred_max_new_size_unaligned, os::vm_page_size()); |
1123 | |
1124 // Unless explicitly requested otherwise, size young gen | |
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1125 // for "short" pauses ~ CMSYoungGenPerWorker*ParallelGCThreads |
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1126 |
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1127 // If either MaxNewSize or NewRatio is set on the command line, |
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1128 // assume the user is trying to set the size of the young gen. |
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1129 if (FLAG_IS_DEFAULT(MaxNewSize) && FLAG_IS_DEFAULT(NewRatio)) { |
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1130 |
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1131 // Set MaxNewSize to our calculated preferred_max_new_size unless |
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1132 // NewSize was set on the command line and it is larger than |
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1133 // preferred_max_new_size. |
0 | 1134 if (!FLAG_IS_DEFAULT(NewSize)) { // NewSize explicitly set at command-line |
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1135 FLAG_SET_ERGO(uintx, MaxNewSize, MAX2(NewSize, preferred_max_new_size)); |
0 | 1136 } else { |
13
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1137 FLAG_SET_ERGO(uintx, MaxNewSize, preferred_max_new_size); |
0 | 1138 } |
1064 | 1139 if (PrintGCDetails && Verbose) { |
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1140 // Too early to use gclog_or_tty |
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1141 tty->print_cr("CMS ergo set MaxNewSize: " SIZE_FORMAT, MaxNewSize); |
886
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1142 } |
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1143 |
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1144 // Code along this path potentially sets NewSize and OldSize |
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1145 |
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1146 assert(max_heap >= InitialHeapSize, "Error"); |
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1147 assert(max_heap >= NewSize, "Error"); |
0 | 1148 |
1064 | 1149 if (PrintGCDetails && Verbose) { |
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1150 // Too early to use gclog_or_tty |
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1151 tty->print_cr("CMS set min_heap_size: " SIZE_FORMAT |
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1152 " initial_heap_size: " SIZE_FORMAT |
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1153 " max_heap: " SIZE_FORMAT, |
1064 | 1154 min_heap_size(), InitialHeapSize, max_heap); |
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1155 } |
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1156 size_t min_new = preferred_max_new_size; |
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1157 if (FLAG_IS_CMDLINE(NewSize)) { |
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1158 min_new = NewSize; |
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1159 } |
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1160 if (max_heap > min_new && min_heap_size() > min_new) { |
0 | 1161 // Unless explicitly requested otherwise, make young gen |
1162 // at least min_new, and at most preferred_max_new_size. | |
1163 if (FLAG_IS_DEFAULT(NewSize)) { | |
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1164 FLAG_SET_ERGO(uintx, NewSize, MAX2(NewSize, min_new)); |
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1165 FLAG_SET_ERGO(uintx, NewSize, MIN2(preferred_max_new_size, NewSize)); |
1064 | 1166 if (PrintGCDetails && Verbose) { |
13
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1167 // Too early to use gclog_or_tty |
2368
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1168 tty->print_cr("CMS ergo set NewSize: " SIZE_FORMAT, NewSize); |
13
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1169 } |
0 | 1170 } |
1171 // Unless explicitly requested otherwise, size old gen | |
2368
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1172 // so it's NewRatio x of NewSize. |
0 | 1173 if (FLAG_IS_DEFAULT(OldSize)) { |
1174 if (max_heap > NewSize) { | |
2368
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1175 FLAG_SET_ERGO(uintx, OldSize, MIN2(NewRatio*NewSize, max_heap - NewSize)); |
1064 | 1176 if (PrintGCDetails && Verbose) { |
13
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1177 // Too early to use gclog_or_tty |
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1178 tty->print_cr("CMS ergo set OldSize: " SIZE_FORMAT, OldSize); |
13
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1179 } |
0 | 1180 } |
1181 } | |
1182 } | |
1183 } | |
1184 // Unless explicitly requested otherwise, definitely | |
1185 // promote all objects surviving "tenuring_default" scavenges. | |
1186 if (FLAG_IS_DEFAULT(MaxTenuringThreshold) && | |
1187 FLAG_IS_DEFAULT(SurvivorRatio)) { | |
13
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1188 FLAG_SET_ERGO(intx, MaxTenuringThreshold, tenuring_default); |
0 | 1189 } |
1190 // If we decided above (or user explicitly requested) | |
1191 // `promote all' (via MaxTenuringThreshold := 0), | |
1192 // prefer minuscule survivor spaces so as not to waste | |
1193 // space for (non-existent) survivors | |
1194 if (FLAG_IS_DEFAULT(SurvivorRatio) && MaxTenuringThreshold == 0) { | |
13
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1195 FLAG_SET_ERGO(intx, SurvivorRatio, MAX2((intx)1024, SurvivorRatio)); |
0 | 1196 } |
1197 // If OldPLABSize is set and CMSParPromoteBlocksToClaim is not, | |
1198 // set CMSParPromoteBlocksToClaim equal to OldPLABSize. | |
1199 // This is done in order to make ParNew+CMS configuration to work | |
1200 // with YoungPLABSize and OldPLABSize options. | |
1201 // See CR 6362902. | |
1202 if (!FLAG_IS_DEFAULT(OldPLABSize)) { | |
1203 if (FLAG_IS_DEFAULT(CMSParPromoteBlocksToClaim)) { | |
13
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1204 // OldPLABSize is not the default value but CMSParPromoteBlocksToClaim |
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1205 // is. In this situtation let CMSParPromoteBlocksToClaim follow |
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1206 // the value (either from the command line or ergonomics) of |
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1207 // OldPLABSize. Following OldPLABSize is an ergonomics decision. |
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1208 FLAG_SET_ERGO(uintx, CMSParPromoteBlocksToClaim, OldPLABSize); |
1145
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1209 } else { |
0 | 1210 // OldPLABSize and CMSParPromoteBlocksToClaim are both set. |
1211 // CMSParPromoteBlocksToClaim is a collector-specific flag, so | |
1212 // we'll let it to take precedence. | |
1213 jio_fprintf(defaultStream::error_stream(), | |
886
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1214 "Both OldPLABSize and CMSParPromoteBlocksToClaim" |
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1215 " options are specified for the CMS collector." |
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1216 " CMSParPromoteBlocksToClaim will take precedence.\n"); |
0 | 1217 } |
1218 } | |
1145
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1219 if (!FLAG_IS_DEFAULT(ResizeOldPLAB) && !ResizeOldPLAB) { |
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1220 // OldPLAB sizing manually turned off: Use a larger default setting, |
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1221 // unless it was manually specified. This is because a too-low value |
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1222 // will slow down scavenges. |
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1223 if (FLAG_IS_DEFAULT(CMSParPromoteBlocksToClaim)) { |
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1224 FLAG_SET_ERGO(uintx, CMSParPromoteBlocksToClaim, 50); // default value before 6631166 |
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1225 } |
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1226 } |
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1227 // Overwrite OldPLABSize which is the variable we will internally use everywhere. |
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1228 FLAG_SET_ERGO(uintx, OldPLABSize, CMSParPromoteBlocksToClaim); |
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1229 // If either of the static initialization defaults have changed, note this |
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1230 // modification. |
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1231 if (!FLAG_IS_DEFAULT(CMSParPromoteBlocksToClaim) || !FLAG_IS_DEFAULT(OldPLABWeight)) { |
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1232 CFLS_LAB::modify_initialization(OldPLABSize, OldPLABWeight); |
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1233 } |
1284 | 1234 if (PrintGCDetails && Verbose) { |
1235 tty->print_cr("MarkStackSize: %uk MarkStackSizeMax: %uk", | |
1236 MarkStackSize / K, MarkStackSizeMax / K); | |
1237 tty->print_cr("ConcGCThreads: %u", ConcGCThreads); | |
1238 } | |
0 | 1239 } |
1145
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1240 #endif // KERNEL |
0 | 1241 |
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1242 void set_object_alignment() { |
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1243 // Object alignment. |
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1244 assert(is_power_of_2(ObjectAlignmentInBytes), "ObjectAlignmentInBytes must be power of 2"); |
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1245 MinObjAlignmentInBytes = ObjectAlignmentInBytes; |
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1246 assert(MinObjAlignmentInBytes >= HeapWordsPerLong * HeapWordSize, "ObjectAlignmentInBytes value is too small"); |
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1247 MinObjAlignment = MinObjAlignmentInBytes / HeapWordSize; |
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1248 assert(MinObjAlignmentInBytes == MinObjAlignment * HeapWordSize, "ObjectAlignmentInBytes value is incorrect"); |
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1249 MinObjAlignmentInBytesMask = MinObjAlignmentInBytes - 1; |
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1250 |
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1251 LogMinObjAlignmentInBytes = exact_log2(ObjectAlignmentInBytes); |
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1252 LogMinObjAlignment = LogMinObjAlignmentInBytes - LogHeapWordSize; |
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1253 |
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1254 // Oop encoding heap max |
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1255 OopEncodingHeapMax = (uint64_t(max_juint) + 1) << LogMinObjAlignmentInBytes; |
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1256 |
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1257 #ifndef KERNEL |
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1258 // Set CMS global values |
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1259 CompactibleFreeListSpace::set_cms_values(); |
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1260 #endif // KERNEL |
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1261 } |
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1262 |
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1263 bool verify_object_alignment() { |
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1264 // Object alignment. |
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1265 if (!is_power_of_2(ObjectAlignmentInBytes)) { |
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1266 jio_fprintf(defaultStream::error_stream(), |
1829
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1267 "error: ObjectAlignmentInBytes=%d must be power of 2\n", |
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1268 (int)ObjectAlignmentInBytes); |
1571
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1269 return false; |
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1270 } |
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1271 if ((int)ObjectAlignmentInBytes < BytesPerLong) { |
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1272 jio_fprintf(defaultStream::error_stream(), |
1829
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1273 "error: ObjectAlignmentInBytes=%d must be greater or equal %d\n", |
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1274 (int)ObjectAlignmentInBytes, BytesPerLong); |
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1275 return false; |
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1276 } |
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1277 // It does not make sense to have big object alignment |
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1278 // since a space lost due to alignment will be greater |
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1279 // then a saved space from compressed oops. |
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1280 if ((int)ObjectAlignmentInBytes > 256) { |
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1281 jio_fprintf(defaultStream::error_stream(), |
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1282 "error: ObjectAlignmentInBytes=%d must not be greater then 256\n", |
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1283 (int)ObjectAlignmentInBytes); |
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1284 return false; |
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1285 } |
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1286 // In case page size is very small. |
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1287 if ((int)ObjectAlignmentInBytes >= os::vm_page_size()) { |
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1288 jio_fprintf(defaultStream::error_stream(), |
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1289 "error: ObjectAlignmentInBytes=%d must be less then page size %d\n", |
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1290 (int)ObjectAlignmentInBytes, os::vm_page_size()); |
1571
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1291 return false; |
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1292 } |
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1293 return true; |
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1294 } |
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1295 |
135
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1296 inline uintx max_heap_for_compressed_oops() { |
1963 | 1297 // Avoid sign flip. |
1298 if (OopEncodingHeapMax < MaxPermSize + os::vm_page_size()) { | |
1299 return 0; | |
1300 } | |
1301 LP64_ONLY(return OopEncodingHeapMax - MaxPermSize - os::vm_page_size()); | |
1064 | 1302 NOT_LP64(ShouldNotReachHere(); return 0); |
135
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1303 } |
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1304 |
0 | 1305 bool Arguments::should_auto_select_low_pause_collector() { |
1306 if (UseAutoGCSelectPolicy && | |
1307 !FLAG_IS_DEFAULT(MaxGCPauseMillis) && | |
1308 (MaxGCPauseMillis <= AutoGCSelectPauseMillis)) { | |
1309 if (PrintGCDetails) { | |
1310 // Cannot use gclog_or_tty yet. | |
1311 tty->print_cr("Automatic selection of the low pause collector" | |
1312 " based on pause goal of %d (ms)", MaxGCPauseMillis); | |
1313 } | |
1314 return true; | |
1315 } | |
1316 return false; | |
1317 } | |
1318 | |
1319 void Arguments::set_ergonomics_flags() { | |
1320 // Parallel GC is not compatible with sharing. If one specifies | |
1064 | 1321 // that they want sharing explicitly, do not set ergonomics flags. |
2362
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1322 if (DumpSharedSpaces || RequireSharedSpaces) { |
0 | 1323 return; |
1324 } | |
1325 | |
1326 if (os::is_server_class_machine() && !force_client_mode ) { | |
1327 // If no other collector is requested explicitly, | |
1328 // let the VM select the collector based on | |
1329 // machine class and automatic selection policy. | |
1330 if (!UseSerialGC && | |
1331 !UseConcMarkSweepGC && | |
342
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1332 !UseG1GC && |
0 | 1333 !UseParNewGC && |
1334 !DumpSharedSpaces && | |
1335 FLAG_IS_DEFAULT(UseParallelGC)) { | |
1336 if (should_auto_select_low_pause_collector()) { | |
1337 FLAG_SET_ERGO(bool, UseConcMarkSweepGC, true); | |
1338 } else { | |
1339 FLAG_SET_ERGO(bool, UseParallelGC, true); | |
1340 } | |
1341 no_shared_spaces(); | |
1342 } | |
1343 } | |
113
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1344 |
1010 | 1345 #ifndef ZERO |
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1346 #ifdef _LP64 |
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1347 // Check that UseCompressedOops can be set with the max heap size allocated |
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1348 // by ergonomics. |
187 | 1349 if (MaxHeapSize <= max_heap_for_compressed_oops()) { |
1783 | 1350 #if !defined(COMPILER1) || defined(TIERED) |
2228 | 1351 if (FLAG_IS_DEFAULT(UseCompressedOops)) { |
932 | 1352 FLAG_SET_ERGO(bool, UseCompressedOops, true); |
113
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1353 } |
1060 | 1354 #endif |
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1355 #ifdef _WIN64 |
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1356 if (UseLargePages && UseCompressedOops) { |
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1357 // Cannot allocate guard pages for implicit checks in indexed addressing |
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1358 // mode, when large pages are specified on windows. |
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1359 // This flag could be switched ON if narrow oop base address is set to 0, |
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1360 // see code in Universe::initialize_heap(). |
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1361 Universe::set_narrow_oop_use_implicit_null_checks(false); |
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1362 } |
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1363 #endif // _WIN64 |
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1364 } else { |
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1365 if (UseCompressedOops && !FLAG_IS_DEFAULT(UseCompressedOops)) { |
344 | 1366 warning("Max heap size too large for Compressed Oops"); |
113
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1367 FLAG_SET_DEFAULT(UseCompressedOops, false); |
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1368 } |
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1369 } |
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1370 // Also checks that certain machines are slower with compressed oops |
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1371 // in vm_version initialization code. |
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1372 #endif // _LP64 |
1010 | 1373 #endif // !ZERO |
0 | 1374 } |
1375 | |
1376 void Arguments::set_parallel_gc_flags() { | |
342
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1377 assert(UseParallelGC || UseParallelOldGC, "Error"); |
0 | 1378 // If parallel old was requested, automatically enable parallel scavenge. |
1379 if (UseParallelOldGC && !UseParallelGC && FLAG_IS_DEFAULT(UseParallelGC)) { | |
1380 FLAG_SET_DEFAULT(UseParallelGC, true); | |
1381 } | |
1382 | |
1383 // If no heap maximum was requested explicitly, use some reasonable fraction | |
1384 // of the physical memory, up to a maximum of 1GB. | |
1385 if (UseParallelGC) { | |
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1386 FLAG_SET_ERGO(uintx, ParallelGCThreads, |
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1387 Abstract_VM_Version::parallel_worker_threads()); |
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1388 |
0 | 1389 // If InitialSurvivorRatio or MinSurvivorRatio were not specified, but the |
1390 // SurvivorRatio has been set, reset their default values to SurvivorRatio + | |
1391 // 2. By doing this we make SurvivorRatio also work for Parallel Scavenger. | |
1392 // See CR 6362902 for details. | |
1393 if (!FLAG_IS_DEFAULT(SurvivorRatio)) { | |
1394 if (FLAG_IS_DEFAULT(InitialSurvivorRatio)) { | |
1395 FLAG_SET_DEFAULT(InitialSurvivorRatio, SurvivorRatio + 2); | |
1396 } | |
1397 if (FLAG_IS_DEFAULT(MinSurvivorRatio)) { | |
1398 FLAG_SET_DEFAULT(MinSurvivorRatio, SurvivorRatio + 2); | |
1399 } | |
1400 } | |
1401 | |
1402 if (UseParallelOldGC) { | |
1403 // Par compact uses lower default values since they are treated as | |
13
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1404 // minimums. These are different defaults because of the different |
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1405 // interpretation and are not ergonomically set. |
0 | 1406 if (FLAG_IS_DEFAULT(MarkSweepDeadRatio)) { |
13
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1407 FLAG_SET_DEFAULT(MarkSweepDeadRatio, 1); |
0 | 1408 } |
1409 if (FLAG_IS_DEFAULT(PermMarkSweepDeadRatio)) { | |
13
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1410 FLAG_SET_DEFAULT(PermMarkSweepDeadRatio, 5); |
0 | 1411 } |
1412 } | |
1413 } | |
1414 } | |
1415 | |
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1416 void Arguments::set_g1_gc_flags() { |
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1417 assert(UseG1GC, "Error"); |
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1418 #ifdef COMPILER1 |
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1419 FastTLABRefill = false; |
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1420 #endif |
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1421 FLAG_SET_DEFAULT(ParallelGCThreads, |
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1422 Abstract_VM_Version::parallel_worker_threads()); |
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1423 if (ParallelGCThreads == 0) { |
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1424 FLAG_SET_DEFAULT(ParallelGCThreads, |
751 | 1425 Abstract_VM_Version::parallel_worker_threads()); |
342
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1426 } |
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1427 no_shared_spaces(); |
751 | 1428 |
1284 | 1429 if (FLAG_IS_DEFAULT(MarkStackSize)) { |
1311
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1430 FLAG_SET_DEFAULT(MarkStackSize, 128 * TASKQUEUE_SIZE); |
1284 | 1431 } |
1432 if (PrintGCDetails && Verbose) { | |
1433 tty->print_cr("MarkStackSize: %uk MarkStackSizeMax: %uk", | |
1434 MarkStackSize / K, MarkStackSizeMax / K); | |
1435 tty->print_cr("ConcGCThreads: %u", ConcGCThreads); | |
1436 } | |
1356 | 1437 |
1438 if (FLAG_IS_DEFAULT(GCTimeRatio) || GCTimeRatio == 0) { | |
1439 // In G1, we want the default GC overhead goal to be higher than | |
1440 // say in PS. So we set it here to 10%. Otherwise the heap might | |
1441 // be expanded more aggressively than we would like it to. In | |
1442 // fact, even 10% seems to not be high enough in some cases | |
1443 // (especially small GC stress tests that the main thing they do | |
1444 // is allocation). We might consider increase it further. | |
1445 FLAG_SET_DEFAULT(GCTimeRatio, 9); | |
1446 } | |
342
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1447 } |
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1448 |
1064 | 1449 void Arguments::set_heap_size() { |
1450 if (!FLAG_IS_DEFAULT(DefaultMaxRAMFraction)) { | |
1451 // Deprecated flag | |
1452 FLAG_SET_CMDLINE(uintx, MaxRAMFraction, DefaultMaxRAMFraction); | |
1453 } | |
1454 | |
1455 const julong phys_mem = | |
1456 FLAG_IS_DEFAULT(MaxRAM) ? MIN2(os::physical_memory(), (julong)MaxRAM) | |
1457 : (julong)MaxRAM; | |
1458 | |
1459 // If the maximum heap size has not been set with -Xmx, | |
1460 // then set it as fraction of the size of physical memory, | |
1461 // respecting the maximum and minimum sizes of the heap. | |
342
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1462 if (FLAG_IS_DEFAULT(MaxHeapSize)) { |
1064 | 1463 julong reasonable_max = phys_mem / MaxRAMFraction; |
1464 | |
1465 if (phys_mem <= MaxHeapSize * MinRAMFraction) { | |
1466 // Small physical memory, so use a minimum fraction of it for the heap | |
1467 reasonable_max = phys_mem / MinRAMFraction; | |
1468 } else { | |
1469 // Not-small physical memory, so require a heap at least | |
1470 // as large as MaxHeapSize | |
1471 reasonable_max = MAX2(reasonable_max, (julong)MaxHeapSize); | |
1472 } | |
1473 if (!FLAG_IS_DEFAULT(ErgoHeapSizeLimit) && ErgoHeapSizeLimit != 0) { | |
1474 // Limit the heap size to ErgoHeapSizeLimit | |
1475 reasonable_max = MIN2(reasonable_max, (julong)ErgoHeapSizeLimit); | |
342
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1476 } |
1064 | 1477 if (UseCompressedOops) { |
1478 // Limit the heap size to the maximum possible when using compressed oops | |
1963 | 1479 julong max_coop_heap = (julong)max_heap_for_compressed_oops(); |
1480 if (HeapBaseMinAddress + MaxHeapSize < max_coop_heap) { | |
1481 // Heap should be above HeapBaseMinAddress to get zero based compressed oops | |
1482 // but it should be not less than default MaxHeapSize. | |
1483 max_coop_heap -= HeapBaseMinAddress; | |
1484 } | |
1485 reasonable_max = MIN2(reasonable_max, max_coop_heap); | |
1064 | 1486 } |
1487 reasonable_max = os::allocatable_physical_memory(reasonable_max); | |
1488 | |
1489 if (!FLAG_IS_DEFAULT(InitialHeapSize)) { | |
1490 // An initial heap size was specified on the command line, | |
1491 // so be sure that the maximum size is consistent. Done | |
1492 // after call to allocatable_physical_memory because that | |
1493 // method might reduce the allocation size. | |
1494 reasonable_max = MAX2(reasonable_max, (julong)InitialHeapSize); | |
1495 } | |
1496 | |
342
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1497 if (PrintGCDetails && Verbose) { |
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1498 // Cannot use gclog_or_tty yet. |
1064 | 1499 tty->print_cr(" Maximum heap size " SIZE_FORMAT, reasonable_max); |
342
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1500 } |
1064 | 1501 FLAG_SET_ERGO(uintx, MaxHeapSize, (uintx)reasonable_max); |
1502 } | |
1503 | |
1504 // If the initial_heap_size has not been set with InitialHeapSize | |
1505 // or -Xms, then set it as fraction of the size of physical memory, | |
1506 // respecting the maximum and minimum sizes of the heap. | |
1507 if (FLAG_IS_DEFAULT(InitialHeapSize)) { | |
1074
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1508 julong reasonable_minimum = (julong)(OldSize + NewSize); |
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1509 |
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1510 reasonable_minimum = MIN2(reasonable_minimum, (julong)MaxHeapSize); |
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1511 |
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1512 reasonable_minimum = os::allocatable_physical_memory(reasonable_minimum); |
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1513 |
1064 | 1514 julong reasonable_initial = phys_mem / InitialRAMFraction; |
1515 | |
1074
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1516 reasonable_initial = MAX2(reasonable_initial, reasonable_minimum); |
1064 | 1517 reasonable_initial = MIN2(reasonable_initial, (julong)MaxHeapSize); |
1518 | |
1519 reasonable_initial = os::allocatable_physical_memory(reasonable_initial); | |
1520 | |
1521 if (PrintGCDetails && Verbose) { | |
1522 // Cannot use gclog_or_tty yet. | |
1523 tty->print_cr(" Initial heap size " SIZE_FORMAT, (uintx)reasonable_initial); | |
1074
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1524 tty->print_cr(" Minimum heap size " SIZE_FORMAT, (uintx)reasonable_minimum); |
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1525 } |
1064 | 1526 FLAG_SET_ERGO(uintx, InitialHeapSize, (uintx)reasonable_initial); |
1074
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1527 set_min_heap_size((uintx)reasonable_minimum); |
342
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1528 } |
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1529 } |
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1530 |
0 | 1531 // This must be called after ergonomics because we want bytecode rewriting |
1532 // if the server compiler is used, or if UseSharedSpaces is disabled. | |
1533 void Arguments::set_bytecode_flags() { | |
1534 // Better not attempt to store into a read-only space. | |
1535 if (UseSharedSpaces) { | |
1536 FLAG_SET_DEFAULT(RewriteBytecodes, false); | |
1537 FLAG_SET_DEFAULT(RewriteFrequentPairs, false); | |
1538 } | |
1539 | |
1540 if (!RewriteBytecodes) { | |
1541 FLAG_SET_DEFAULT(RewriteFrequentPairs, false); | |
1542 } | |
1543 } | |
1544 | |
1545 // Aggressive optimization flags -XX:+AggressiveOpts | |
1546 void Arguments::set_aggressive_opts_flags() { | |
17
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1547 #ifdef COMPILER2 |
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1548 if (AggressiveOpts || !FLAG_IS_DEFAULT(AutoBoxCacheMax)) { |
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1549 if (FLAG_IS_DEFAULT(EliminateAutoBox)) { |
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1550 FLAG_SET_DEFAULT(EliminateAutoBox, true); |
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1551 } |
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1552 if (FLAG_IS_DEFAULT(AutoBoxCacheMax)) { |
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|
1553 FLAG_SET_DEFAULT(AutoBoxCacheMax, 20000); |
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1554 } |
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1555 |
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1556 // Feed the cache size setting into the JDK |
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|
1557 char buffer[1024]; |
513
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|
1558 sprintf(buffer, "java.lang.Integer.IntegerCache.high=" INTX_FORMAT, AutoBoxCacheMax); |
17
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|
1559 add_property(buffer); |
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|
1560 } |
65 | 1561 if (AggressiveOpts && FLAG_IS_DEFAULT(DoEscapeAnalysis)) { |
1562 FLAG_SET_DEFAULT(DoEscapeAnalysis, true); | |
1563 } | |
416
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1564 if (AggressiveOpts && FLAG_IS_DEFAULT(BiasedLockingStartupDelay)) { |
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1565 FLAG_SET_DEFAULT(BiasedLockingStartupDelay, 500); |
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|
1566 } |
1622 | 1567 if (AggressiveOpts && FLAG_IS_DEFAULT(OptimizeStringConcat)) { |
1568 FLAG_SET_DEFAULT(OptimizeStringConcat, true); | |
1569 } | |
1763 | 1570 if (AggressiveOpts && FLAG_IS_DEFAULT(OptimizeFill)) { |
1571 FLAG_SET_DEFAULT(OptimizeFill, true); | |
1572 } | |
17
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1573 #endif |
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1574 |
0 | 1575 if (AggressiveOpts) { |
61 | 1576 // Sample flag setting code |
1577 // if (FLAG_IS_DEFAULT(EliminateZeroing)) { | |
1578 // FLAG_SET_DEFAULT(EliminateZeroing, true); | |
1579 // } | |
0 | 1580 } |
1581 } | |
1582 | |
1583 //=========================================================================================================== | |
1584 // Parsing of java.compiler property | |
1585 | |
1586 void Arguments::process_java_compiler_argument(char* arg) { | |
1587 // For backwards compatibility, Djava.compiler=NONE or "" | |
1588 // causes us to switch to -Xint mode UNLESS -Xdebug | |
1589 // is also specified. | |
1590 if (strlen(arg) == 0 || strcasecmp(arg, "NONE") == 0) { | |
1591 set_java_compiler(true); // "-Djava.compiler[=...]" most recently seen. | |
1592 } | |
1593 } | |
1594 | |
1595 void Arguments::process_java_launcher_argument(const char* launcher, void* extra_info) { | |
1596 _sun_java_launcher = strdup(launcher); | |
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1597 if (strcmp("gamma", _sun_java_launcher) == 0) { |
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7022037: Pause when exiting if debugger is attached on windows
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2243
diff
changeset
|
1598 _created_by_gamma_launcher = true; |
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
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diff
changeset
|
1599 } |
0 | 1600 } |
1601 | |
1602 bool Arguments::created_by_java_launcher() { | |
1603 assert(_sun_java_launcher != NULL, "property must have value"); | |
1604 return strcmp(DEFAULT_JAVA_LAUNCHER, _sun_java_launcher) != 0; | |
1605 } | |
1606 | |
2302
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7022037: Pause when exiting if debugger is attached on windows
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2243
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|
1607 bool Arguments::created_by_gamma_launcher() { |
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
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2243
diff
changeset
|
1608 return _created_by_gamma_launcher; |
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7022037: Pause when exiting if debugger is attached on windows
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parents:
2243
diff
changeset
|
1609 } |
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diff
changeset
|
1610 |
0 | 1611 //=========================================================================================================== |
1612 // Parsing of main arguments | |
1613 | |
1244
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6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
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1188
diff
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|
1614 bool Arguments::verify_interval(uintx val, uintx min, |
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
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1188
diff
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|
1615 uintx max, const char* name) { |
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
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1188
diff
changeset
|
1616 // Returns true iff value is in the inclusive interval [min..max] |
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
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1188
diff
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|
1617 // false, otherwise. |
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
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1188
diff
changeset
|
1618 if (val >= min && val <= max) { |
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
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1188
diff
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|
1619 return true; |
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
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1188
diff
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|
1620 } |
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
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1188
diff
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|
1621 jio_fprintf(defaultStream::error_stream(), |
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
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diff
changeset
|
1622 "%s of " UINTX_FORMAT " is invalid; must be between " UINTX_FORMAT |
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
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diff
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|
1623 " and " UINTX_FORMAT "\n", |
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
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diff
changeset
|
1624 name, val, min, max); |
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
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|
1625 return false; |
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6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
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1188
diff
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|
1626 } |
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6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
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parents:
1188
diff
changeset
|
1627 |
1744
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
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|
1628 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.
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2362
diff
changeset
|
1629 // Returns true if given value is at least specified min threshold |
1744
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
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diff
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|
1630 // false, otherwise. |
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6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
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diff
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|
1631 if (val >= min ) { |
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6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
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|
1632 return true; |
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
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diff
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|
1633 } |
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6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
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diff
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|
1634 jio_fprintf(defaultStream::error_stream(), |
2366
1fb790245268
6820066: Check that -XX:ParGCArrayScanChunk has a value larger than zero.
jwilhelm
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diff
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|
1635 "%s of " INTX_FORMAT " is invalid; must be at least " INTX_FORMAT "\n", |
1744
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
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diff
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|
1636 name, val, min); |
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
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diff
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|
1637 return false; |
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
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diff
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|
1638 } |
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
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1681
diff
changeset
|
1639 |
0 | 1640 bool Arguments::verify_percentage(uintx value, const char* name) { |
1641 if (value <= 100) { | |
1642 return true; | |
1643 } | |
1644 jio_fprintf(defaultStream::error_stream(), | |
1645 "%s of " UINTX_FORMAT " is invalid; must be between 0 and 100\n", | |
1646 name, value); | |
1647 return false; | |
1648 } | |
1649 | |
1064 | 1650 static void force_serial_gc() { |
0 | 1651 FLAG_SET_DEFAULT(UseSerialGC, true); |
1652 FLAG_SET_DEFAULT(UseParNewGC, false); | |
1653 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
|
1654 FLAG_SET_DEFAULT(CMSIncrementalMode, false); // special CMS suboption |
0 | 1655 FLAG_SET_DEFAULT(UseParallelGC, false); |
1656 FLAG_SET_DEFAULT(UseParallelOldGC, false); | |
342
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
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parents:
135
diff
changeset
|
1657 FLAG_SET_DEFAULT(UseG1GC, false); |
0 | 1658 } |
1659 | |
1660 static bool verify_serial_gc_flags() { | |
1661 return (UseSerialGC && | |
945
68ef3fdcdb76
6872136: CMS: confusing message may be printed when a collector is switched off implicitly
ysr
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932
diff
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|
1662 !(UseParNewGC || (UseConcMarkSweepGC || CMSIncrementalMode) || UseG1GC || |
342
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6711316: Open source the Garbage-First garbage collector
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parents:
135
diff
changeset
|
1663 UseParallelGC || UseParallelOldGC)); |
0 | 1664 } |
1665 | |
10
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
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0
diff
changeset
|
1666 // Check consistency of GC selection |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
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0
diff
changeset
|
1667 bool Arguments::check_gc_consistency() { |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1668 bool status = true; |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1669 // Ensure that the user has not selected conflicting sets |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
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0
diff
changeset
|
1670 // 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
|
1671 // 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
|
1672 // 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
|
1673 // 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
|
1674 // 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
|
1675 // select conflicting combinations. |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1676 uint i = 0; |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1677 if (UseSerialGC) i++; |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1678 if (UseConcMarkSweepGC || UseParNewGC) i++; |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1679 if (UseParallelGC || UseParallelOldGC) i++; |
845
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
751
diff
changeset
|
1680 if (UseG1GC) i++; |
10
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1681 if (i > 1) { |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1682 jio_fprintf(defaultStream::error_stream(), |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1683 "Conflicting collector combinations in option list; " |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1684 "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
|
1685 "allowed\n"); |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1686 status = false; |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1687 } |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1688 |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1689 return status; |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1690 } |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1691 |
1744
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
ptisnovs
parents:
1681
diff
changeset
|
1692 // Check stack pages settings |
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
ptisnovs
parents:
1681
diff
changeset
|
1693 bool Arguments::check_stack_pages() |
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
ptisnovs
parents:
1681
diff
changeset
|
1694 { |
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
ptisnovs
parents:
1681
diff
changeset
|
1695 bool status = true; |
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
ptisnovs
parents:
1681
diff
changeset
|
1696 status = status && verify_min_value(StackYellowPages, 1, "StackYellowPages"); |
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
ptisnovs
parents:
1681
diff
changeset
|
1697 status = status && verify_min_value(StackRedPages, 1, "StackRedPages"); |
1867
b6aedd1acdc0
6983240: guarantee((Solaris::min_stack_allowed >= (StackYellowPages+StackRedPages...) wrong
coleenp
parents:
1864
diff
changeset
|
1698 // greater stack shadow pages can't generate instruction to bang stack |
b6aedd1acdc0
6983240: guarantee((Solaris::min_stack_allowed >= (StackYellowPages+StackRedPages...) wrong
coleenp
parents:
1864
diff
changeset
|
1699 status = status && verify_interval(StackShadowPages, 1, 50, "StackShadowPages"); |
1744
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
ptisnovs
parents:
1681
diff
changeset
|
1700 return status; |
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
ptisnovs
parents:
1681
diff
changeset
|
1701 } |
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
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1681
diff
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|
1702 |
0 | 1703 // Check the consistency of vm_init_args |
1704 bool Arguments::check_vm_args_consistency() { | |
1705 // Method for adding checks for flag consistency. | |
1706 // The intent is to warn the user of all possible conflicts, | |
1707 // before returning an error. | |
1708 // Note: Needs platform-dependent factoring. | |
1709 bool status = true; | |
1710 | |
1711 #if ( (defined(COMPILER2) && defined(SPARC))) | |
1712 // NOTE: The call to VM_Version_init depends on the fact that VM_Version_init | |
1713 // on sparc doesn't require generation of a stub as is the case on, e.g., | |
1714 // x86. Normally, VM_Version_init must be called from init_globals in | |
1715 // init.cpp, which is called by the initial java thread *after* arguments | |
1716 // have been parsed. VM_Version_init gets called twice on sparc. | |
1717 extern void VM_Version_init(); | |
1718 VM_Version_init(); | |
1719 if (!VM_Version::has_v9()) { | |
1720 jio_fprintf(defaultStream::error_stream(), | |
1721 "V8 Machine detected, Server requires V9\n"); | |
1722 status = false; | |
1723 } | |
1724 #endif /* COMPILER2 && SPARC */ | |
1725 | |
1726 // Allow both -XX:-UseStackBanging and -XX:-UseBoundThreads in non-product | |
1727 // builds so the cost of stack banging can be measured. | |
1728 #if (defined(PRODUCT) && defined(SOLARIS)) | |
1729 if (!UseBoundThreads && !UseStackBanging) { | |
1730 jio_fprintf(defaultStream::error_stream(), | |
1731 "-UseStackBanging conflicts with -UseBoundThreads\n"); | |
1732 | |
1733 status = false; | |
1734 } | |
1735 #endif | |
1736 | |
1737 if (TLABRefillWasteFraction == 0) { | |
1738 jio_fprintf(defaultStream::error_stream(), | |
1739 "TLABRefillWasteFraction should be a denominator, " | |
1740 "not " SIZE_FORMAT "\n", | |
1741 TLABRefillWasteFraction); | |
1742 status = false; | |
1743 } | |
1744 | |
10
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1745 status = status && verify_percentage(AdaptiveSizePolicyWeight, |
0 | 1746 "AdaptiveSizePolicyWeight"); |
10
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1747 status = status && verify_percentage(AdaptivePermSizeWeight, "AdaptivePermSizeWeight"); |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1748 status = status && verify_percentage(ThresholdTolerance, "ThresholdTolerance"); |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1749 status = status && verify_percentage(MinHeapFreeRatio, "MinHeapFreeRatio"); |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1750 status = status && verify_percentage(MaxHeapFreeRatio, "MaxHeapFreeRatio"); |
0 | 1751 |
1752 if (MinHeapFreeRatio > MaxHeapFreeRatio) { | |
1753 jio_fprintf(defaultStream::error_stream(), | |
1754 "MinHeapFreeRatio (" UINTX_FORMAT ") must be less than or " | |
1755 "equal to MaxHeapFreeRatio (" UINTX_FORMAT ")\n", | |
1756 MinHeapFreeRatio, MaxHeapFreeRatio); | |
1757 status = false; | |
1758 } | |
1759 // Keeping the heap 100% free is hard ;-) so limit it to 99%. | |
1760 MinHeapFreeRatio = MIN2(MinHeapFreeRatio, (uintx) 99); | |
1761 | |
1762 if (FullGCALot && FLAG_IS_DEFAULT(MarkSweepAlwaysCompactCount)) { | |
1763 MarkSweepAlwaysCompactCount = 1; // Move objects every gc. | |
1764 } | |
1765 | |
483
0f773163217d
6765954: par compact - stress mode for splitting young gen spaces
jcoomes
parents:
449
diff
changeset
|
1766 if (UseParallelOldGC && ParallelOldGCSplitALot) { |
0f773163217d
6765954: par compact - stress mode for splitting young gen spaces
jcoomes
parents:
449
diff
changeset
|
1767 // Settings to encourage splitting. |
0f773163217d
6765954: par compact - stress mode for splitting young gen spaces
jcoomes
parents:
449
diff
changeset
|
1768 if (!FLAG_IS_CMDLINE(NewRatio)) { |
0f773163217d
6765954: par compact - stress mode for splitting young gen spaces
jcoomes
parents:
449
diff
changeset
|
1769 FLAG_SET_CMDLINE(intx, NewRatio, 2); |
0f773163217d
6765954: par compact - stress mode for splitting young gen spaces
jcoomes
parents:
449
diff
changeset
|
1770 } |
0f773163217d
6765954: par compact - stress mode for splitting young gen spaces
jcoomes
parents:
449
diff
changeset
|
1771 if (!FLAG_IS_CMDLINE(ScavengeBeforeFullGC)) { |
0f773163217d
6765954: par compact - stress mode for splitting young gen spaces
jcoomes
parents:
449
diff
changeset
|
1772 FLAG_SET_CMDLINE(bool, ScavengeBeforeFullGC, false); |
0f773163217d
6765954: par compact - stress mode for splitting young gen spaces
jcoomes
parents:
449
diff
changeset
|
1773 } |
0f773163217d
6765954: par compact - stress mode for splitting young gen spaces
jcoomes
parents:
449
diff
changeset
|
1774 } |
0f773163217d
6765954: par compact - stress mode for splitting young gen spaces
jcoomes
parents:
449
diff
changeset
|
1775 |
10
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1776 status = status && verify_percentage(GCHeapFreeLimit, "GCHeapFreeLimit"); |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
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0
diff
changeset
|
1777 status = status && verify_percentage(GCTimeLimit, "GCTimeLimit"); |
0 | 1778 if (GCTimeLimit == 100) { |
1779 // Turn off gc-overhead-limit-exceeded checks | |
1780 FLAG_SET_DEFAULT(UseGCOverheadLimit, false); | |
1781 } | |
1782 | |
10
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1783 status = status && verify_percentage(GCHeapFreeLimit, "GCHeapFreeLimit"); |
0 | 1784 |
10
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1785 status = status && check_gc_consistency(); |
1744
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
ptisnovs
parents:
1681
diff
changeset
|
1786 status = status && check_stack_pages(); |
0 | 1787 |
1788 if (_has_alloc_profile) { | |
1789 if (UseParallelGC || UseParallelOldGC) { | |
1790 jio_fprintf(defaultStream::error_stream(), | |
1791 "error: invalid argument combination.\n" | |
1792 "Allocation profiling (-Xaprof) cannot be used together with " | |
1793 "Parallel GC (-XX:+UseParallelGC or -XX:+UseParallelOldGC).\n"); | |
1794 status = false; | |
1795 } | |
1796 if (UseConcMarkSweepGC) { | |
1797 jio_fprintf(defaultStream::error_stream(), | |
1798 "error: invalid argument combination.\n" | |
1799 "Allocation profiling (-Xaprof) cannot be used together with " | |
1800 "the CMS collector (-XX:+UseConcMarkSweepGC).\n"); | |
1801 status = false; | |
1802 } | |
1803 } | |
1804 | |
1805 if (CMSIncrementalMode) { | |
1806 if (!UseConcMarkSweepGC) { | |
1807 jio_fprintf(defaultStream::error_stream(), | |
1808 "error: invalid argument combination.\n" | |
1809 "The CMS collector (-XX:+UseConcMarkSweepGC) must be " | |
1810 "selected in order\nto use CMSIncrementalMode.\n"); | |
1811 status = false; | |
1812 } else { | |
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1813 status = status && verify_percentage(CMSIncrementalDutyCycle, |
0 | 1814 "CMSIncrementalDutyCycle"); |
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1815 status = status && verify_percentage(CMSIncrementalDutyCycleMin, |
0 | 1816 "CMSIncrementalDutyCycleMin"); |
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1817 status = status && verify_percentage(CMSIncrementalSafetyFactor, |
0 | 1818 "CMSIncrementalSafetyFactor"); |
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1819 status = status && verify_percentage(CMSIncrementalOffset, |
0 | 1820 "CMSIncrementalOffset"); |
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1821 status = status && verify_percentage(CMSExpAvgFactor, |
0 | 1822 "CMSExpAvgFactor"); |
1823 // If it was not set on the command line, set | |
1824 // CMSInitiatingOccupancyFraction to 1 so icms can initiate cycles early. | |
1825 if (CMSInitiatingOccupancyFraction < 0) { | |
1826 FLAG_SET_DEFAULT(CMSInitiatingOccupancyFraction, 1); | |
1827 } | |
1828 } | |
1829 } | |
1830 | |
1831 // CMS space iteration, which FLSVerifyAllHeapreferences entails, | |
1832 // insists that we hold the requisite locks so that the iteration is | |
1833 // MT-safe. For the verification at start-up and shut-down, we don't | |
1834 // yet have a good way of acquiring and releasing these locks, | |
1835 // which are not visible at the CollectedHeap level. We want to | |
1836 // be able to acquire these locks and then do the iteration rather | |
1837 // than just disable the lock verification. This will be fixed under | |
1838 // bug 4788986. | |
1839 if (UseConcMarkSweepGC && FLSVerifyAllHeapReferences) { | |
1840 if (VerifyGCStartAt == 0) { | |
1841 warning("Heap verification at start-up disabled " | |
1842 "(due to current incompatibility with FLSVerifyAllHeapReferences)"); | |
1843 VerifyGCStartAt = 1; // Disable verification at start-up | |
1844 } | |
1845 if (VerifyBeforeExit) { | |
1846 warning("Heap verification at shutdown disabled " | |
1847 "(due to current incompatibility with FLSVerifyAllHeapReferences)"); | |
1848 VerifyBeforeExit = false; // Disable verification at shutdown | |
1849 } | |
1850 } | |
1851 | |
1852 // Note: only executed in non-PRODUCT mode | |
1853 if (!UseAsyncConcMarkSweepGC && | |
1854 (ExplicitGCInvokesConcurrent || | |
1855 ExplicitGCInvokesConcurrentAndUnloadsClasses)) { | |
1856 jio_fprintf(defaultStream::error_stream(), | |
1857 "error: +ExplictGCInvokesConcurrent[AndUnloadsClasses] conflicts" | |
1858 " with -UseAsyncConcMarkSweepGC"); | |
1859 status = false; | |
1860 } | |
1861 | |
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1862 status = status && verify_min_value(ParGCArrayScanChunk, 1, "ParGCArrayScanChunk"); |
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1863 |
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1864 #ifndef SERIALGC |
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1865 if (UseG1GC) { |
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1866 status = status && verify_percentage(InitiatingHeapOccupancyPercent, |
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1867 "InitiatingHeapOccupancyPercent"); |
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1868 status = status && verify_min_value(G1RefProcDrainInterval, 1, |
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1869 "G1RefProcDrainInterval"); |
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1870 status = status && verify_min_value((intx)G1ConcMarkStepDurationMillis, 1, |
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1871 "G1ConcMarkStepDurationMillis"); |
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1872 } |
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1873 #endif |
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1874 |
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1875 status = status && verify_interval(RefDiscoveryPolicy, |
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1876 ReferenceProcessor::DiscoveryPolicyMin, |
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1877 ReferenceProcessor::DiscoveryPolicyMax, |
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1878 "RefDiscoveryPolicy"); |
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1879 |
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1880 // Limit the lower bound of this flag to 1 as it is used in a division |
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1881 // expression. |
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1882 status = status && verify_interval(TLABWasteTargetPercent, |
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1883 1, 100, "TLABWasteTargetPercent"); |
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1884 |
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1885 status = status && verify_object_alignment(); |
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1886 |
0 | 1887 return status; |
1888 } | |
1889 | |
1890 bool Arguments::is_bad_option(const JavaVMOption* option, jboolean ignore, | |
1891 const char* option_type) { | |
1892 if (ignore) return false; | |
1893 | |
1894 const char* spacer = " "; | |
1895 if (option_type == NULL) { | |
1896 option_type = ++spacer; // Set both to the empty string. | |
1897 } | |
1898 | |
1899 if (os::obsolete_option(option)) { | |
1900 jio_fprintf(defaultStream::error_stream(), | |
1901 "Obsolete %s%soption: %s\n", option_type, spacer, | |
1902 option->optionString); | |
1903 return false; | |
1904 } else { | |
1905 jio_fprintf(defaultStream::error_stream(), | |
1906 "Unrecognized %s%soption: %s\n", option_type, spacer, | |
1907 option->optionString); | |
1908 return true; | |
1909 } | |
1910 } | |
1911 | |
1912 static const char* user_assertion_options[] = { | |
1913 "-da", "-ea", "-disableassertions", "-enableassertions", 0 | |
1914 }; | |
1915 | |
1916 static const char* system_assertion_options[] = { | |
1917 "-dsa", "-esa", "-disablesystemassertions", "-enablesystemassertions", 0 | |
1918 }; | |
1919 | |
1920 // Return true if any of the strings in null-terminated array 'names' matches. | |
1921 // If tail_allowed is true, then the tail must begin with a colon; otherwise, | |
1922 // the option must match exactly. | |
1923 static bool match_option(const JavaVMOption* option, const char** names, const char** tail, | |
1924 bool tail_allowed) { | |
1925 for (/* empty */; *names != NULL; ++names) { | |
1926 if (match_option(option, *names, tail)) { | |
1927 if (**tail == '\0' || tail_allowed && **tail == ':') { | |
1928 return true; | |
1929 } | |
1930 } | |
1931 } | |
1932 return false; | |
1933 } | |
1934 | |
1284 | 1935 bool Arguments::parse_uintx(const char* value, |
1936 uintx* uintx_arg, | |
1937 uintx min_size) { | |
1938 | |
1939 // Check the sign first since atomull() parses only unsigned values. | |
1940 bool value_is_positive = !(*value == '-'); | |
1941 | |
1942 if (value_is_positive) { | |
1943 julong n; | |
1944 bool good_return = atomull(value, &n); | |
1945 if (good_return) { | |
1946 bool above_minimum = n >= min_size; | |
1947 bool value_is_too_large = n > max_uintx; | |
1948 | |
1949 if (above_minimum && !value_is_too_large) { | |
1950 *uintx_arg = n; | |
1951 return true; | |
1952 } | |
1953 } | |
1954 } | |
1955 return false; | |
1956 } | |
1957 | |
0 | 1958 Arguments::ArgsRange Arguments::parse_memory_size(const char* s, |
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1959 julong* long_arg, |
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1960 julong min_size) { |
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1961 if (!atomull(s, long_arg)) return arg_unreadable; |
0 | 1962 return check_memory_size(*long_arg, min_size); |
1963 } | |
1964 | |
1965 // Parse JavaVMInitArgs structure | |
1966 | |
1967 jint Arguments::parse_vm_init_args(const JavaVMInitArgs* args) { | |
1968 // For components of the system classpath. | |
1969 SysClassPath scp(Arguments::get_sysclasspath()); | |
1970 bool scp_assembly_required = false; | |
1971 | |
1972 // Save default settings for some mode flags | |
1973 Arguments::_AlwaysCompileLoopMethods = AlwaysCompileLoopMethods; | |
1974 Arguments::_UseOnStackReplacement = UseOnStackReplacement; | |
1975 Arguments::_ClipInlining = ClipInlining; | |
1976 Arguments::_BackgroundCompilation = BackgroundCompilation; | |
1977 | |
1978 // Parse JAVA_TOOL_OPTIONS environment variable (if present) | |
1979 jint result = parse_java_tool_options_environment_variable(&scp, &scp_assembly_required); | |
1980 if (result != JNI_OK) { | |
1981 return result; | |
1982 } | |
1983 | |
1984 // Parse JavaVMInitArgs structure passed in | |
1985 result = parse_each_vm_init_arg(args, &scp, &scp_assembly_required, COMMAND_LINE); | |
1986 if (result != JNI_OK) { | |
1987 return result; | |
1988 } | |
1989 | |
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1990 if (AggressiveOpts) { |
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1991 // Insert alt-rt.jar between user-specified bootclasspath |
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1992 // prefix and the default bootclasspath. os::set_boot_path() |
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1993 // uses meta_index_dir as the default bootclasspath directory. |
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1994 const char* altclasses_jar = "alt-rt.jar"; |
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1995 size_t altclasses_path_len = strlen(get_meta_index_dir()) + 1 + |
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1996 strlen(altclasses_jar); |
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1997 char* altclasses_path = NEW_C_HEAP_ARRAY(char, altclasses_path_len); |
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1998 strcpy(altclasses_path, get_meta_index_dir()); |
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1999 strcat(altclasses_path, altclasses_jar); |
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2000 scp.add_suffix_to_prefix(altclasses_path); |
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2001 scp_assembly_required = true; |
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2002 FREE_C_HEAP_ARRAY(char, altclasses_path); |
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2003 } |
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2004 |
0 | 2005 // Parse _JAVA_OPTIONS environment variable (if present) (mimics classic VM) |
2006 result = parse_java_options_environment_variable(&scp, &scp_assembly_required); | |
2007 if (result != JNI_OK) { | |
2008 return result; | |
2009 } | |
2010 | |
2011 // Do final processing now that all arguments have been parsed | |
2012 result = finalize_vm_init_args(&scp, scp_assembly_required); | |
2013 if (result != JNI_OK) { | |
2014 return result; | |
2015 } | |
2016 | |
2017 return JNI_OK; | |
2018 } | |
2019 | |
2020 jint Arguments::parse_each_vm_init_arg(const JavaVMInitArgs* args, | |
2021 SysClassPath* scp_p, | |
2022 bool* scp_assembly_required_p, | |
2023 FlagValueOrigin origin) { | |
2024 // Remaining part of option string | |
2025 const char* tail; | |
2026 | |
2027 // iterate over arguments | |
2028 for (int index = 0; index < args->nOptions; index++) { | |
2029 bool is_absolute_path = false; // for -agentpath vs -agentlib | |
2030 | |
2031 const JavaVMOption* option = args->options + index; | |
2032 | |
2033 if (!match_option(option, "-Djava.class.path", &tail) && | |
2034 !match_option(option, "-Dsun.java.command", &tail) && | |
2035 !match_option(option, "-Dsun.java.launcher", &tail)) { | |
2036 | |
2037 // add all jvm options to the jvm_args string. This string | |
2038 // is used later to set the java.vm.args PerfData string constant. | |
2039 // the -Djava.class.path and the -Dsun.java.command options are | |
2040 // omitted from jvm_args string as each have their own PerfData | |
2041 // string constant object. | |
2042 build_jvm_args(option->optionString); | |
2043 } | |
2044 | |
2045 // -verbose:[class/gc/jni] | |
2046 if (match_option(option, "-verbose", &tail)) { | |
2047 if (!strcmp(tail, ":class") || !strcmp(tail, "")) { | |
2048 FLAG_SET_CMDLINE(bool, TraceClassLoading, true); | |
2049 FLAG_SET_CMDLINE(bool, TraceClassUnloading, true); | |
2050 } else if (!strcmp(tail, ":gc")) { | |
2051 FLAG_SET_CMDLINE(bool, PrintGC, true); | |
2052 } else if (!strcmp(tail, ":jni")) { | |
2053 FLAG_SET_CMDLINE(bool, PrintJNIResolving, true); | |
2054 } | |
2055 // -da / -ea / -disableassertions / -enableassertions | |
2056 // These accept an optional class/package name separated by a colon, e.g., | |
2057 // -da:java.lang.Thread. | |
2058 } else if (match_option(option, user_assertion_options, &tail, true)) { | |
2059 bool enable = option->optionString[1] == 'e'; // char after '-' is 'e' | |
2060 if (*tail == '\0') { | |
2061 JavaAssertions::setUserClassDefault(enable); | |
2062 } else { | |
2063 assert(*tail == ':', "bogus match by match_option()"); | |
2064 JavaAssertions::addOption(tail + 1, enable); | |
2065 } | |
2066 // -dsa / -esa / -disablesystemassertions / -enablesystemassertions | |
2067 } else if (match_option(option, system_assertion_options, &tail, false)) { | |
2068 bool enable = option->optionString[1] == 'e'; // char after '-' is 'e' | |
2069 JavaAssertions::setSystemClassDefault(enable); | |
2070 // -bootclasspath: | |
2071 } else if (match_option(option, "-Xbootclasspath:", &tail)) { | |
2072 scp_p->reset_path(tail); | |
2073 *scp_assembly_required_p = true; | |
2074 // -bootclasspath/a: | |
2075 } else if (match_option(option, "-Xbootclasspath/a:", &tail)) { | |
2076 scp_p->add_suffix(tail); | |
2077 *scp_assembly_required_p = true; | |
2078 // -bootclasspath/p: | |
2079 } else if (match_option(option, "-Xbootclasspath/p:", &tail)) { | |
2080 scp_p->add_prefix(tail); | |
2081 *scp_assembly_required_p = true; | |
2082 // -Xrun | |
2083 } else if (match_option(option, "-Xrun", &tail)) { | |
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2084 if (tail != NULL) { |
0 | 2085 const char* pos = strchr(tail, ':'); |
2086 size_t len = (pos == NULL) ? strlen(tail) : pos - tail; | |
2087 char* name = (char*)memcpy(NEW_C_HEAP_ARRAY(char, len + 1), tail, len); | |
2088 name[len] = '\0'; | |
2089 | |
2090 char *options = NULL; | |
2091 if(pos != NULL) { | |
2092 size_t len2 = strlen(pos+1) + 1; // options start after ':'. Final zero must be copied. | |
2093 options = (char*)memcpy(NEW_C_HEAP_ARRAY(char, len2), pos+1, len2); | |
2094 } | |
2095 #ifdef JVMTI_KERNEL | |
2096 if ((strcmp(name, "hprof") == 0) || (strcmp(name, "jdwp") == 0)) { | |
2097 warning("profiling and debugging agents are not supported with Kernel VM"); | |
2098 } else | |
2099 #endif // JVMTI_KERNEL | |
2100 add_init_library(name, options); | |
2101 } | |
2102 // -agentlib and -agentpath | |
2103 } else if (match_option(option, "-agentlib:", &tail) || | |
2104 (is_absolute_path = match_option(option, "-agentpath:", &tail))) { | |
2105 if(tail != NULL) { | |
2106 const char* pos = strchr(tail, '='); | |
2107 size_t len = (pos == NULL) ? strlen(tail) : pos - tail; | |
2108 char* name = strncpy(NEW_C_HEAP_ARRAY(char, len + 1), tail, len); | |
2109 name[len] = '\0'; | |
2110 | |
2111 char *options = NULL; | |
2112 if(pos != NULL) { | |
2113 options = strcpy(NEW_C_HEAP_ARRAY(char, strlen(pos + 1) + 1), pos + 1); | |
2114 } | |
2115 #ifdef JVMTI_KERNEL | |
2116 if ((strcmp(name, "hprof") == 0) || (strcmp(name, "jdwp") == 0)) { | |
2117 warning("profiling and debugging agents are not supported with Kernel VM"); | |
2118 } else | |
2119 #endif // JVMTI_KERNEL | |
2120 add_init_agent(name, options, is_absolute_path); | |
2121 | |
2122 } | |
2123 // -javaagent | |
2124 } else if (match_option(option, "-javaagent:", &tail)) { | |
2125 if(tail != NULL) { | |
2126 char *options = strcpy(NEW_C_HEAP_ARRAY(char, strlen(tail) + 1), tail); | |
2127 add_init_agent("instrument", options, false); | |
2128 } | |
2129 // -Xnoclassgc | |
2130 } else if (match_option(option, "-Xnoclassgc", &tail)) { | |
2131 FLAG_SET_CMDLINE(bool, ClassUnloading, false); | |
2132 // -Xincgc: i-CMS | |
2133 } else if (match_option(option, "-Xincgc", &tail)) { | |
2134 FLAG_SET_CMDLINE(bool, UseConcMarkSweepGC, true); | |
2135 FLAG_SET_CMDLINE(bool, CMSIncrementalMode, true); | |
2136 // -Xnoincgc: no i-CMS | |
2137 } else if (match_option(option, "-Xnoincgc", &tail)) { | |
2138 FLAG_SET_CMDLINE(bool, UseConcMarkSweepGC, false); | |
2139 FLAG_SET_CMDLINE(bool, CMSIncrementalMode, false); | |
2140 // -Xconcgc | |
2141 } else if (match_option(option, "-Xconcgc", &tail)) { | |
2142 FLAG_SET_CMDLINE(bool, UseConcMarkSweepGC, true); | |
2143 // -Xnoconcgc | |
2144 } else if (match_option(option, "-Xnoconcgc", &tail)) { | |
2145 FLAG_SET_CMDLINE(bool, UseConcMarkSweepGC, false); | |
2146 // -Xbatch | |
2147 } else if (match_option(option, "-Xbatch", &tail)) { | |
2148 FLAG_SET_CMDLINE(bool, BackgroundCompilation, false); | |
2149 // -Xmn for compatibility with other JVM vendors | |
2150 } else if (match_option(option, "-Xmn", &tail)) { | |
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2151 julong long_initial_eden_size = 0; |
0 | 2152 ArgsRange errcode = parse_memory_size(tail, &long_initial_eden_size, 1); |
2153 if (errcode != arg_in_range) { | |
2154 jio_fprintf(defaultStream::error_stream(), | |
2155 "Invalid initial eden size: %s\n", option->optionString); | |
2156 describe_range_error(errcode); | |
2157 return JNI_EINVAL; | |
2158 } | |
1064 | 2159 FLAG_SET_CMDLINE(uintx, MaxNewSize, (uintx)long_initial_eden_size); |
2160 FLAG_SET_CMDLINE(uintx, NewSize, (uintx)long_initial_eden_size); | |
0 | 2161 // -Xms |
2162 } else if (match_option(option, "-Xms", &tail)) { | |
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2163 julong long_initial_heap_size = 0; |
0 | 2164 ArgsRange errcode = parse_memory_size(tail, &long_initial_heap_size, 1); |
2165 if (errcode != arg_in_range) { | |
2166 jio_fprintf(defaultStream::error_stream(), | |
2167 "Invalid initial heap size: %s\n", option->optionString); | |
2168 describe_range_error(errcode); | |
2169 return JNI_EINVAL; | |
2170 } | |
1064 | 2171 FLAG_SET_CMDLINE(uintx, InitialHeapSize, (uintx)long_initial_heap_size); |
0 | 2172 // Currently the minimum size and the initial heap sizes are the same. |
1064 | 2173 set_min_heap_size(InitialHeapSize); |
0 | 2174 // -Xmx |
2175 } else if (match_option(option, "-Xmx", &tail)) { | |
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2176 julong long_max_heap_size = 0; |
0 | 2177 ArgsRange errcode = parse_memory_size(tail, &long_max_heap_size, 1); |
2178 if (errcode != arg_in_range) { | |
2179 jio_fprintf(defaultStream::error_stream(), | |
2180 "Invalid maximum heap size: %s\n", option->optionString); | |
2181 describe_range_error(errcode); | |
2182 return JNI_EINVAL; | |
2183 } | |
1064 | 2184 FLAG_SET_CMDLINE(uintx, MaxHeapSize, (uintx)long_max_heap_size); |
0 | 2185 // Xmaxf |
2186 } else if (match_option(option, "-Xmaxf", &tail)) { | |
2187 int maxf = (int)(atof(tail) * 100); | |
2188 if (maxf < 0 || maxf > 100) { | |
2189 jio_fprintf(defaultStream::error_stream(), | |
2190 "Bad max heap free percentage size: %s\n", | |
2191 option->optionString); | |
2192 return JNI_EINVAL; | |
2193 } else { | |
2194 FLAG_SET_CMDLINE(uintx, MaxHeapFreeRatio, maxf); | |
2195 } | |
2196 // Xminf | |
2197 } else if (match_option(option, "-Xminf", &tail)) { | |
2198 int minf = (int)(atof(tail) * 100); | |
2199 if (minf < 0 || minf > 100) { | |
2200 jio_fprintf(defaultStream::error_stream(), | |
2201 "Bad min heap free percentage size: %s\n", | |
2202 option->optionString); | |
2203 return JNI_EINVAL; | |
2204 } else { | |
2205 FLAG_SET_CMDLINE(uintx, MinHeapFreeRatio, minf); | |
2206 } | |
2207 // -Xss | |
2208 } else if (match_option(option, "-Xss", &tail)) { | |
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2209 julong long_ThreadStackSize = 0; |
0 | 2210 ArgsRange errcode = parse_memory_size(tail, &long_ThreadStackSize, 1000); |
2211 if (errcode != arg_in_range) { | |
2212 jio_fprintf(defaultStream::error_stream(), | |
2213 "Invalid thread stack size: %s\n", option->optionString); | |
2214 describe_range_error(errcode); | |
2215 return JNI_EINVAL; | |
2216 } | |
2217 // Internally track ThreadStackSize in units of 1024 bytes. | |
2218 FLAG_SET_CMDLINE(intx, ThreadStackSize, | |
2219 round_to((int)long_ThreadStackSize, K) / K); | |
2220 // -Xoss | |
2221 } else if (match_option(option, "-Xoss", &tail)) { | |
2222 // HotSpot does not have separate native and Java stacks, ignore silently for compatibility | |
2223 // -Xmaxjitcodesize | |
2095
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2224 } else if (match_option(option, "-Xmaxjitcodesize", &tail) || |
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2225 match_option(option, "-XX:ReservedCodeCacheSize=", &tail)) { |
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2226 julong long_ReservedCodeCacheSize = 0; |
0 | 2227 ArgsRange errcode = parse_memory_size(tail, &long_ReservedCodeCacheSize, |
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2228 (size_t)InitialCodeCacheSize); |
0 | 2229 if (errcode != arg_in_range) { |
2230 jio_fprintf(defaultStream::error_stream(), | |
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2231 "Invalid maximum code cache size: %s. Should be greater than InitialCodeCacheSize=%dK\n", |
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2232 option->optionString, InitialCodeCacheSize/K); |
0 | 2233 describe_range_error(errcode); |
2234 return JNI_EINVAL; | |
2235 } | |
2236 FLAG_SET_CMDLINE(uintx, ReservedCodeCacheSize, (uintx)long_ReservedCodeCacheSize); | |
2237 // -green | |
2238 } else if (match_option(option, "-green", &tail)) { | |
2239 jio_fprintf(defaultStream::error_stream(), | |
2240 "Green threads support not available\n"); | |
2241 return JNI_EINVAL; | |
2242 // -native | |
2243 } else if (match_option(option, "-native", &tail)) { | |
2244 // HotSpot always uses native threads, ignore silently for compatibility | |
2245 // -Xsqnopause | |
2246 } else if (match_option(option, "-Xsqnopause", &tail)) { | |
2247 // EVM option, ignore silently for compatibility | |
2248 // -Xrs | |
2249 } else if (match_option(option, "-Xrs", &tail)) { | |
2250 // Classic/EVM option, new functionality | |
2251 FLAG_SET_CMDLINE(bool, ReduceSignalUsage, true); | |
2252 } else if (match_option(option, "-Xusealtsigs", &tail)) { | |
2253 // change default internal VM signals used - lower case for back compat | |
2254 FLAG_SET_CMDLINE(bool, UseAltSigs, true); | |
2255 // -Xoptimize | |
2256 } else if (match_option(option, "-Xoptimize", &tail)) { | |
2257 // EVM option, ignore silently for compatibility | |
2258 // -Xprof | |
2259 } else if (match_option(option, "-Xprof", &tail)) { | |
2260 #ifndef FPROF_KERNEL | |
2261 _has_profile = true; | |
2262 #else // FPROF_KERNEL | |
2263 // do we have to exit? | |
2264 warning("Kernel VM does not support flat profiling."); | |
2265 #endif // FPROF_KERNEL | |
2266 // -Xaprof | |
2267 } else if (match_option(option, "-Xaprof", &tail)) { | |
2268 _has_alloc_profile = true; | |
2269 // -Xconcurrentio | |
2270 } else if (match_option(option, "-Xconcurrentio", &tail)) { | |
2271 FLAG_SET_CMDLINE(bool, UseLWPSynchronization, true); | |
2272 FLAG_SET_CMDLINE(bool, BackgroundCompilation, false); | |
2273 FLAG_SET_CMDLINE(intx, DeferThrSuspendLoopCount, 1); | |
2274 FLAG_SET_CMDLINE(bool, UseTLAB, false); | |
2275 FLAG_SET_CMDLINE(uintx, NewSizeThreadIncrease, 16 * K); // 20Kb per thread added to new generation | |
2276 | |
2277 // -Xinternalversion | |
2278 } else if (match_option(option, "-Xinternalversion", &tail)) { | |
2279 jio_fprintf(defaultStream::output_stream(), "%s\n", | |
2280 VM_Version::internal_vm_info_string()); | |
2281 vm_exit(0); | |
2282 #ifndef PRODUCT | |
2283 // -Xprintflags | |
2284 } else if (match_option(option, "-Xprintflags", &tail)) { | |
2285 CommandLineFlags::printFlags(); | |
2286 vm_exit(0); | |
2287 #endif | |
2288 // -D | |
2289 } else if (match_option(option, "-D", &tail)) { | |
2290 if (!add_property(tail)) { | |
2291 return JNI_ENOMEM; | |
2292 } | |
2293 // Out of the box management support | |
2294 if (match_option(option, "-Dcom.sun.management", &tail)) { | |
2295 FLAG_SET_CMDLINE(bool, ManagementServer, true); | |
2296 } | |
2297 // -Xint | |
2298 } else if (match_option(option, "-Xint", &tail)) { | |
2299 set_mode_flags(_int); | |
2300 // -Xmixed | |
2301 } else if (match_option(option, "-Xmixed", &tail)) { | |
2302 set_mode_flags(_mixed); | |
2303 // -Xcomp | |
2304 } else if (match_option(option, "-Xcomp", &tail)) { | |
2305 // for testing the compiler; turn off all flags that inhibit compilation | |
2306 set_mode_flags(_comp); | |
2307 | |
2308 // -Xshare:dump | |
2309 } else if (match_option(option, "-Xshare:dump", &tail)) { | |
2310 #ifdef TIERED | |
2311 FLAG_SET_CMDLINE(bool, DumpSharedSpaces, true); | |
2312 set_mode_flags(_int); // Prevent compilation, which creates objects | |
2313 #elif defined(COMPILER2) | |
2314 vm_exit_during_initialization( | |
2315 "Dumping a shared archive is not supported on the Server JVM.", NULL); | |
2316 #elif defined(KERNEL) | |
2317 vm_exit_during_initialization( | |
2318 "Dumping a shared archive is not supported on the Kernel JVM.", NULL); | |
2319 #else | |
2320 FLAG_SET_CMDLINE(bool, DumpSharedSpaces, true); | |
2321 set_mode_flags(_int); // Prevent compilation, which creates objects | |
2322 #endif | |
2323 // -Xshare:on | |
2324 } else if (match_option(option, "-Xshare:on", &tail)) { | |
2325 FLAG_SET_CMDLINE(bool, UseSharedSpaces, true); | |
2326 FLAG_SET_CMDLINE(bool, RequireSharedSpaces, true); | |
2327 // -Xshare:auto | |
2328 } else if (match_option(option, "-Xshare:auto", &tail)) { | |
2329 FLAG_SET_CMDLINE(bool, UseSharedSpaces, true); | |
2330 FLAG_SET_CMDLINE(bool, RequireSharedSpaces, false); | |
2331 // -Xshare:off | |
2332 } else if (match_option(option, "-Xshare:off", &tail)) { | |
2333 FLAG_SET_CMDLINE(bool, UseSharedSpaces, false); | |
2334 FLAG_SET_CMDLINE(bool, RequireSharedSpaces, false); | |
2335 | |
2336 // -Xverify | |
2337 } else if (match_option(option, "-Xverify", &tail)) { | |
2338 if (strcmp(tail, ":all") == 0 || strcmp(tail, "") == 0) { | |
2339 FLAG_SET_CMDLINE(bool, BytecodeVerificationLocal, true); | |
2340 FLAG_SET_CMDLINE(bool, BytecodeVerificationRemote, true); | |
2341 } else if (strcmp(tail, ":remote") == 0) { | |
2342 FLAG_SET_CMDLINE(bool, BytecodeVerificationLocal, false); | |
2343 FLAG_SET_CMDLINE(bool, BytecodeVerificationRemote, true); | |
2344 } else if (strcmp(tail, ":none") == 0) { | |
2345 FLAG_SET_CMDLINE(bool, BytecodeVerificationLocal, false); | |
2346 FLAG_SET_CMDLINE(bool, BytecodeVerificationRemote, false); | |
2347 } else if (is_bad_option(option, args->ignoreUnrecognized, "verification")) { | |
2348 return JNI_EINVAL; | |
2349 } | |
2350 // -Xdebug | |
2351 } else if (match_option(option, "-Xdebug", &tail)) { | |
2352 // note this flag has been used, then ignore | |
2353 set_xdebug_mode(true); | |
2354 // -Xnoagent | |
2355 } else if (match_option(option, "-Xnoagent", &tail)) { | |
2356 // For compatibility with classic. HotSpot refuses to load the old style agent.dll. | |
2357 } else if (match_option(option, "-Xboundthreads", &tail)) { | |
2358 // Bind user level threads to kernel threads (Solaris only) | |
2359 FLAG_SET_CMDLINE(bool, UseBoundThreads, true); | |
2360 } else if (match_option(option, "-Xloggc:", &tail)) { | |
2361 // Redirect GC output to the file. -Xloggc:<filename> | |
2362 // ostream_init_log(), when called will use this filename | |
2363 // to initialize a fileStream. | |
2364 _gc_log_filename = strdup(tail); | |
2365 FLAG_SET_CMDLINE(bool, PrintGC, true); | |
2366 FLAG_SET_CMDLINE(bool, PrintGCTimeStamps, true); | |
2367 FLAG_SET_CMDLINE(bool, TraceClassUnloading, true); | |
2368 | |
2369 // JNI hooks | |
2370 } else if (match_option(option, "-Xcheck", &tail)) { | |
2371 if (!strcmp(tail, ":jni")) { | |
2372 CheckJNICalls = true; | |
2373 } else if (is_bad_option(option, args->ignoreUnrecognized, | |
2374 "check")) { | |
2375 return JNI_EINVAL; | |
2376 } | |
2377 } else if (match_option(option, "vfprintf", &tail)) { | |
2378 _vfprintf_hook = CAST_TO_FN_PTR(vfprintf_hook_t, option->extraInfo); | |
2379 } else if (match_option(option, "exit", &tail)) { | |
2380 _exit_hook = CAST_TO_FN_PTR(exit_hook_t, option->extraInfo); | |
2381 } else if (match_option(option, "abort", &tail)) { | |
2382 _abort_hook = CAST_TO_FN_PTR(abort_hook_t, option->extraInfo); | |
2383 // -XX:+AggressiveHeap | |
2384 } else if (match_option(option, "-XX:+AggressiveHeap", &tail)) { | |
2385 | |
2386 // This option inspects the machine and attempts to set various | |
2387 // parameters to be optimal for long-running, memory allocation | |
2388 // intensive jobs. It is intended for machines with large | |
2389 // amounts of cpu and memory. | |
2390 | |
2391 // initHeapSize is needed since _initial_heap_size is 4 bytes on a 32 bit | |
2392 // VM, but we may not be able to represent the total physical memory | |
2393 // available (like having 8gb of memory on a box but using a 32bit VM). | |
2394 // Thus, we need to make sure we're using a julong for intermediate | |
2395 // calculations. | |
2396 julong initHeapSize; | |
2397 julong total_memory = os::physical_memory(); | |
2398 | |
2399 if (total_memory < (julong)256*M) { | |
2400 jio_fprintf(defaultStream::error_stream(), | |
2401 "You need at least 256mb of memory to use -XX:+AggressiveHeap\n"); | |
2402 vm_exit(1); | |
2403 } | |
2404 | |
2405 // The heap size is half of available memory, or (at most) | |
2406 // all of possible memory less 160mb (leaving room for the OS | |
2407 // when using ISM). This is the maximum; because adaptive sizing | |
2408 // is turned on below, the actual space used may be smaller. | |
2409 | |
2410 initHeapSize = MIN2(total_memory / (julong)2, | |
2411 total_memory - (julong)160*M); | |
2412 | |
2413 // Make sure that if we have a lot of memory we cap the 32 bit | |
2414 // process space. The 64bit VM version of this function is a nop. | |
2415 initHeapSize = os::allocatable_physical_memory(initHeapSize); | |
2416 | |
2417 // The perm gen is separate but contiguous with the | |
2418 // object heap (and is reserved with it) so subtract it | |
2419 // from the heap size. | |
2420 if (initHeapSize > MaxPermSize) { | |
2421 initHeapSize = initHeapSize - MaxPermSize; | |
2422 } else { | |
2423 warning("AggressiveHeap and MaxPermSize values may conflict"); | |
2424 } | |
2425 | |
2426 if (FLAG_IS_DEFAULT(MaxHeapSize)) { | |
2427 FLAG_SET_CMDLINE(uintx, MaxHeapSize, initHeapSize); | |
1064 | 2428 FLAG_SET_CMDLINE(uintx, InitialHeapSize, initHeapSize); |
0 | 2429 // Currently the minimum size and the initial heap sizes are the same. |
1064 | 2430 set_min_heap_size(initHeapSize); |
0 | 2431 } |
2432 if (FLAG_IS_DEFAULT(NewSize)) { | |
2433 // Make the young generation 3/8ths of the total heap. | |
2434 FLAG_SET_CMDLINE(uintx, NewSize, | |
2435 ((julong)MaxHeapSize / (julong)8) * (julong)3); | |
2436 FLAG_SET_CMDLINE(uintx, MaxNewSize, NewSize); | |
2437 } | |
2438 | |
2439 FLAG_SET_DEFAULT(UseLargePages, true); | |
2440 | |
2441 // Increase some data structure sizes for efficiency | |
2442 FLAG_SET_CMDLINE(uintx, BaseFootPrintEstimate, MaxHeapSize); | |
2443 FLAG_SET_CMDLINE(bool, ResizeTLAB, false); | |
2444 FLAG_SET_CMDLINE(uintx, TLABSize, 256*K); | |
2445 | |
2446 // See the OldPLABSize comment below, but replace 'after promotion' | |
2447 // with 'after copying'. YoungPLABSize is the size of the survivor | |
2448 // space per-gc-thread buffers. The default is 4kw. | |
2449 FLAG_SET_CMDLINE(uintx, YoungPLABSize, 256*K); // Note: this is in words | |
2450 | |
2451 // OldPLABSize is the size of the buffers in the old gen that | |
2452 // UseParallelGC uses to promote live data that doesn't fit in the | |
2453 // survivor spaces. At any given time, there's one for each gc thread. | |
2454 // The default size is 1kw. These buffers are rarely used, since the | |
2455 // survivor spaces are usually big enough. For specjbb, however, there | |
2456 // are occasions when there's lots of live data in the young gen | |
2457 // and we end up promoting some of it. We don't have a definite | |
2458 // explanation for why bumping OldPLABSize helps, but the theory | |
2459 // is that a bigger PLAB results in retaining something like the | |
2460 // original allocation order after promotion, which improves mutator | |
2461 // locality. A minor effect may be that larger PLABs reduce the | |
2462 // number of PLAB allocation events during gc. The value of 8kw | |
2463 // was arrived at by experimenting with specjbb. | |
2464 FLAG_SET_CMDLINE(uintx, OldPLABSize, 8*K); // Note: this is in words | |
2465 | |
2466 // CompilationPolicyChoice=0 causes the server compiler to adopt | |
2467 // a more conservative which-method-do-I-compile policy when one | |
2468 // of the counters maintained by the interpreter trips. The | |
2469 // result is reduced startup time and improved specjbb and | |
2470 // alacrity performance. Zero is the default, but we set it | |
2471 // explicitly here in case the default changes. | |
2472 // See runtime/compilationPolicy.*. | |
2473 FLAG_SET_CMDLINE(intx, CompilationPolicyChoice, 0); | |
2474 | |
2475 // Enable parallel GC and adaptive generation sizing | |
2476 FLAG_SET_CMDLINE(bool, UseParallelGC, true); | |
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2477 FLAG_SET_DEFAULT(ParallelGCThreads, |
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2478 Abstract_VM_Version::parallel_worker_threads()); |
0 | 2479 |
2480 // Encourage steady state memory management | |
2481 FLAG_SET_CMDLINE(uintx, ThresholdTolerance, 100); | |
2482 | |
2483 // This appears to improve mutator locality | |
2484 FLAG_SET_CMDLINE(bool, ScavengeBeforeFullGC, false); | |
2485 | |
2486 // Get around early Solaris scheduling bug | |
2487 // (affinity vs other jobs on system) | |
2488 // but disallow DR and offlining (5008695). | |
2489 FLAG_SET_CMDLINE(bool, BindGCTaskThreadsToCPUs, true); | |
2490 | |
2491 } else if (match_option(option, "-XX:+NeverTenure", &tail)) { | |
2492 // The last option must always win. | |
2493 FLAG_SET_CMDLINE(bool, AlwaysTenure, false); | |
2494 FLAG_SET_CMDLINE(bool, NeverTenure, true); | |
2495 } else if (match_option(option, "-XX:+AlwaysTenure", &tail)) { | |
2496 // The last option must always win. | |
2497 FLAG_SET_CMDLINE(bool, NeverTenure, false); | |
2498 FLAG_SET_CMDLINE(bool, AlwaysTenure, true); | |
2499 } else if (match_option(option, "-XX:+CMSPermGenSweepingEnabled", &tail) || | |
2500 match_option(option, "-XX:-CMSPermGenSweepingEnabled", &tail)) { | |
2501 jio_fprintf(defaultStream::error_stream(), | |
2502 "Please use CMSClassUnloadingEnabled in place of " | |
2503 "CMSPermGenSweepingEnabled in the future\n"); | |
2504 } else if (match_option(option, "-XX:+UseGCTimeLimit", &tail)) { | |
2505 FLAG_SET_CMDLINE(bool, UseGCOverheadLimit, true); | |
2506 jio_fprintf(defaultStream::error_stream(), | |
2507 "Please use -XX:+UseGCOverheadLimit in place of " | |
2508 "-XX:+UseGCTimeLimit in the future\n"); | |
2509 } else if (match_option(option, "-XX:-UseGCTimeLimit", &tail)) { | |
2510 FLAG_SET_CMDLINE(bool, UseGCOverheadLimit, false); | |
2511 jio_fprintf(defaultStream::error_stream(), | |
2512 "Please use -XX:-UseGCOverheadLimit in place of " | |
2513 "-XX:-UseGCTimeLimit in the future\n"); | |
2514 // The TLE options are for compatibility with 1.3 and will be | |
2515 // removed without notice in a future release. These options | |
2516 // are not to be documented. | |
2517 } else if (match_option(option, "-XX:MaxTLERatio=", &tail)) { | |
2518 // No longer used. | |
2519 } else if (match_option(option, "-XX:+ResizeTLE", &tail)) { | |
2520 FLAG_SET_CMDLINE(bool, ResizeTLAB, true); | |
2521 } else if (match_option(option, "-XX:-ResizeTLE", &tail)) { | |
2522 FLAG_SET_CMDLINE(bool, ResizeTLAB, false); | |
2523 } else if (match_option(option, "-XX:+PrintTLE", &tail)) { | |
2524 FLAG_SET_CMDLINE(bool, PrintTLAB, true); | |
2525 } else if (match_option(option, "-XX:-PrintTLE", &tail)) { | |
2526 FLAG_SET_CMDLINE(bool, PrintTLAB, false); | |
2527 } else if (match_option(option, "-XX:TLEFragmentationRatio=", &tail)) { | |
2528 // No longer used. | |
2529 } else if (match_option(option, "-XX:TLESize=", &tail)) { | |
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2530 julong long_tlab_size = 0; |
0 | 2531 ArgsRange errcode = parse_memory_size(tail, &long_tlab_size, 1); |
2532 if (errcode != arg_in_range) { | |
2533 jio_fprintf(defaultStream::error_stream(), | |
2534 "Invalid TLAB size: %s\n", option->optionString); | |
2535 describe_range_error(errcode); | |
2536 return JNI_EINVAL; | |
2537 } | |
2538 FLAG_SET_CMDLINE(uintx, TLABSize, long_tlab_size); | |
2539 } else if (match_option(option, "-XX:TLEThreadRatio=", &tail)) { | |
2540 // No longer used. | |
2541 } else if (match_option(option, "-XX:+UseTLE", &tail)) { | |
2542 FLAG_SET_CMDLINE(bool, UseTLAB, true); | |
2543 } else if (match_option(option, "-XX:-UseTLE", &tail)) { | |
2544 FLAG_SET_CMDLINE(bool, UseTLAB, false); | |
2545 SOLARIS_ONLY( | |
2546 } else if (match_option(option, "-XX:+UsePermISM", &tail)) { | |
2547 warning("-XX:+UsePermISM is obsolete."); | |
2548 FLAG_SET_CMDLINE(bool, UseISM, true); | |
2549 } else if (match_option(option, "-XX:-UsePermISM", &tail)) { | |
2550 FLAG_SET_CMDLINE(bool, UseISM, false); | |
2551 ) | |
2552 } else if (match_option(option, "-XX:+DisplayVMOutputToStderr", &tail)) { | |
2553 FLAG_SET_CMDLINE(bool, DisplayVMOutputToStdout, false); | |
2554 FLAG_SET_CMDLINE(bool, DisplayVMOutputToStderr, true); | |
2555 } else if (match_option(option, "-XX:+DisplayVMOutputToStdout", &tail)) { | |
2556 FLAG_SET_CMDLINE(bool, DisplayVMOutputToStderr, false); | |
2557 FLAG_SET_CMDLINE(bool, DisplayVMOutputToStdout, true); | |
2558 } else if (match_option(option, "-XX:+ExtendedDTraceProbes", &tail)) { | |
2559 #ifdef SOLARIS | |
2560 FLAG_SET_CMDLINE(bool, ExtendedDTraceProbes, true); | |
2561 FLAG_SET_CMDLINE(bool, DTraceMethodProbes, true); | |
2562 FLAG_SET_CMDLINE(bool, DTraceAllocProbes, true); | |
2563 FLAG_SET_CMDLINE(bool, DTraceMonitorProbes, true); | |
2564 #else // ndef SOLARIS | |
2565 jio_fprintf(defaultStream::error_stream(), | |
2566 "ExtendedDTraceProbes flag is only applicable on Solaris\n"); | |
2567 return JNI_EINVAL; | |
2568 #endif // ndef SOLARIS | |
2569 #ifdef ASSERT | |
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|
2570 } else if (match_option(option, "-XX:+FullGCALot", &tail)) { |
0 | 2571 FLAG_SET_CMDLINE(bool, FullGCALot, true); |
2572 // disable scavenge before parallel mark-compact | |
2573 FLAG_SET_CMDLINE(bool, ScavengeBeforeFullGC, false); | |
2574 #endif | |
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2575 } else if (match_option(option, "-XX:CMSParPromoteBlocksToClaim=", &tail)) { |
0 | 2576 julong cms_blocks_to_claim = (julong)atol(tail); |
2577 FLAG_SET_CMDLINE(uintx, CMSParPromoteBlocksToClaim, cms_blocks_to_claim); | |
2578 jio_fprintf(defaultStream::error_stream(), | |
1145
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2579 "Please use -XX:OldPLABSize in place of " |
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|
2580 "-XX:CMSParPromoteBlocksToClaim in the future\n"); |
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2581 } else if (match_option(option, "-XX:ParCMSPromoteBlocksToClaim=", &tail)) { |
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|
2582 julong cms_blocks_to_claim = (julong)atol(tail); |
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2583 FLAG_SET_CMDLINE(uintx, CMSParPromoteBlocksToClaim, cms_blocks_to_claim); |
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2584 jio_fprintf(defaultStream::error_stream(), |
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2585 "Please use -XX:OldPLABSize in place of " |
0 | 2586 "-XX:ParCMSPromoteBlocksToClaim in the future\n"); |
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|
2587 } else if (match_option(option, "-XX:ParallelGCOldGenAllocBufferSize=", &tail)) { |
489
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|
2588 julong old_plab_size = 0; |
0 | 2589 ArgsRange errcode = parse_memory_size(tail, &old_plab_size, 1); |
2590 if (errcode != arg_in_range) { | |
2591 jio_fprintf(defaultStream::error_stream(), | |
2592 "Invalid old PLAB size: %s\n", option->optionString); | |
2593 describe_range_error(errcode); | |
2594 return JNI_EINVAL; | |
2595 } | |
489
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6653214: MemoryPoolMXBean.setUsageThreshold() does not support large heap sizes.
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|
2596 FLAG_SET_CMDLINE(uintx, OldPLABSize, old_plab_size); |
0 | 2597 jio_fprintf(defaultStream::error_stream(), |
2598 "Please use -XX:OldPLABSize in place of " | |
2599 "-XX:ParallelGCOldGenAllocBufferSize in the future\n"); | |
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2600 } else if (match_option(option, "-XX:ParallelGCToSpaceAllocBufferSize=", &tail)) { |
489
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2601 julong young_plab_size = 0; |
0 | 2602 ArgsRange errcode = parse_memory_size(tail, &young_plab_size, 1); |
2603 if (errcode != arg_in_range) { | |
2604 jio_fprintf(defaultStream::error_stream(), | |
2605 "Invalid young PLAB size: %s\n", option->optionString); | |
2606 describe_range_error(errcode); | |
2607 return JNI_EINVAL; | |
2608 } | |
489
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diff
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|
2609 FLAG_SET_CMDLINE(uintx, YoungPLABSize, young_plab_size); |
0 | 2610 jio_fprintf(defaultStream::error_stream(), |
2611 "Please use -XX:YoungPLABSize in place of " | |
2612 "-XX:ParallelGCToSpaceAllocBufferSize in the future\n"); | |
1284 | 2613 } else if (match_option(option, "-XX:CMSMarkStackSize=", &tail) || |
2614 match_option(option, "-XX:G1MarkStackSize=", &tail)) { | |
2615 julong stack_size = 0; | |
2616 ArgsRange errcode = parse_memory_size(tail, &stack_size, 1); | |
2617 if (errcode != arg_in_range) { | |
2618 jio_fprintf(defaultStream::error_stream(), | |
2619 "Invalid mark stack size: %s\n", option->optionString); | |
2620 describe_range_error(errcode); | |
2621 return JNI_EINVAL; | |
2622 } | |
2623 FLAG_SET_CMDLINE(uintx, MarkStackSize, stack_size); | |
2624 } else if (match_option(option, "-XX:CMSMarkStackSizeMax=", &tail)) { | |
2625 julong max_stack_size = 0; | |
2626 ArgsRange errcode = parse_memory_size(tail, &max_stack_size, 1); | |
2627 if (errcode != arg_in_range) { | |
2628 jio_fprintf(defaultStream::error_stream(), | |
2629 "Invalid maximum mark stack size: %s\n", | |
2630 option->optionString); | |
2631 describe_range_error(errcode); | |
2632 return JNI_EINVAL; | |
2633 } | |
2634 FLAG_SET_CMDLINE(uintx, MarkStackSizeMax, max_stack_size); | |
2635 } else if (match_option(option, "-XX:ParallelMarkingThreads=", &tail) || | |
2636 match_option(option, "-XX:ParallelCMSThreads=", &tail)) { | |
2637 uintx conc_threads = 0; | |
2638 if (!parse_uintx(tail, &conc_threads, 1)) { | |
2639 jio_fprintf(defaultStream::error_stream(), | |
2640 "Invalid concurrent threads: %s\n", option->optionString); | |
2641 return JNI_EINVAL; | |
2642 } | |
2643 FLAG_SET_CMDLINE(uintx, ConcGCThreads, conc_threads); | |
1145
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|
2644 } else if (match_option(option, "-XX:", &tail)) { // -XX:xxxx |
0 | 2645 // Skip -XX:Flags= since that case has already been handled |
2646 if (strncmp(tail, "Flags=", strlen("Flags=")) != 0) { | |
2647 if (!process_argument(tail, args->ignoreUnrecognized, origin)) { | |
2648 return JNI_EINVAL; | |
2649 } | |
2650 } | |
2651 // Unknown option | |
2652 } else if (is_bad_option(option, args->ignoreUnrecognized)) { | |
2653 return JNI_ERR; | |
2654 } | |
2655 } | |
449
171e581e8161
6554406: Change switch UseVMInterruptibleIO default to false (sol)
xlu
parents:
420
diff
changeset
|
2656 // Change the default value for flags which have different default values |
171e581e8161
6554406: Change switch UseVMInterruptibleIO default to false (sol)
xlu
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diff
changeset
|
2657 // when working with older JDKs. |
171e581e8161
6554406: Change switch UseVMInterruptibleIO default to false (sol)
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parents:
420
diff
changeset
|
2658 if (JDK_Version::current().compare_major(6) <= 0 && |
171e581e8161
6554406: Change switch UseVMInterruptibleIO default to false (sol)
xlu
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420
diff
changeset
|
2659 FLAG_IS_DEFAULT(UseVMInterruptibleIO)) { |
171e581e8161
6554406: Change switch UseVMInterruptibleIO default to false (sol)
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420
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|
2660 FLAG_SET_DEFAULT(UseVMInterruptibleIO, true); |
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6554406: Change switch UseVMInterruptibleIO default to false (sol)
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|
2661 } |
1679
3d90023429ec
6888526: Linux getCurrentThreadCpuTime is drastically slower than Windows
aph
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1628
diff
changeset
|
2662 #ifdef LINUX |
3d90023429ec
6888526: Linux getCurrentThreadCpuTime is drastically slower than Windows
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1628
diff
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|
2663 if (JDK_Version::current().compare_major(6) <= 0 && |
3d90023429ec
6888526: Linux getCurrentThreadCpuTime is drastically slower than Windows
aph
parents:
1628
diff
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|
2664 FLAG_IS_DEFAULT(UseLinuxPosixThreadCPUClocks)) { |
3d90023429ec
6888526: Linux getCurrentThreadCpuTime is drastically slower than Windows
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1628
diff
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|
2665 FLAG_SET_DEFAULT(UseLinuxPosixThreadCPUClocks, false); |
3d90023429ec
6888526: Linux getCurrentThreadCpuTime is drastically slower than Windows
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1628
diff
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|
2666 } |
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1628
diff
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|
2667 #endif // LINUX |
0 | 2668 return JNI_OK; |
2669 } | |
2670 | |
2671 jint Arguments::finalize_vm_init_args(SysClassPath* scp_p, bool scp_assembly_required) { | |
2672 // This must be done after all -D arguments have been processed. | |
2673 scp_p->expand_endorsed(); | |
2674 | |
2675 if (scp_assembly_required || scp_p->get_endorsed() != NULL) { | |
2676 // Assemble the bootclasspath elements into the final path. | |
2677 Arguments::set_sysclasspath(scp_p->combined_path()); | |
2678 } | |
2679 | |
2680 // This must be done after all arguments have been processed. | |
2681 // java_compiler() true means set to "NONE" or empty. | |
2682 if (java_compiler() && !xdebug_mode()) { | |
2683 // For backwards compatibility, we switch to interpreted mode if | |
2684 // -Djava.compiler="NONE" or "" is specified AND "-Xdebug" was | |
2685 // not specified. | |
2686 set_mode_flags(_int); | |
2687 } | |
2688 if (CompileThreshold == 0) { | |
2689 set_mode_flags(_int); | |
2690 } | |
2691 | |
2692 #ifndef COMPILER2 | |
2693 // Don't degrade server performance for footprint | |
2694 if (FLAG_IS_DEFAULT(UseLargePages) && | |
2695 MaxHeapSize < LargePageHeapSizeThreshold) { | |
2696 // No need for large granularity pages w/small heaps. | |
2697 // Note that large pages are enabled/disabled for both the | |
2698 // Java heap and the code cache. | |
2699 FLAG_SET_DEFAULT(UseLargePages, false); | |
2700 SOLARIS_ONLY(FLAG_SET_DEFAULT(UseMPSS, false)); | |
2701 SOLARIS_ONLY(FLAG_SET_DEFAULT(UseISM, false)); | |
2702 } | |
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37f87013dfd8
6711316: Open source the Garbage-First garbage collector
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135
diff
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|
2703 |
1251
576e77447e3c
6923002: assert(false,"this call site should not be polymorphic")
kvn
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1188
diff
changeset
|
2704 // Tiered compilation is undefined with C1. |
576e77447e3c
6923002: assert(false,"this call site should not be polymorphic")
kvn
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1188
diff
changeset
|
2705 TieredCompilation = false; |
0 | 2706 #else |
2707 if (!FLAG_IS_DEFAULT(OptoLoopAlignment) && FLAG_IS_DEFAULT(MaxLoopPad)) { | |
2708 FLAG_SET_DEFAULT(MaxLoopPad, OptoLoopAlignment-1); | |
2709 } | |
2710 #endif | |
2711 | |
1681
126ea7725993
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1679
diff
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|
2712 // If we are running in a headless jre, force java.awt.headless property |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
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|
2713 // to be true unless the property has already been set. |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
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1679
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|
2714 // Also allow the OS environment variable JAVA_AWT_HEADLESS to set headless state. |
126ea7725993
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bobv
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1679
diff
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|
2715 if (os::is_headless_jre()) { |
126ea7725993
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1679
diff
changeset
|
2716 const char* headless = Arguments::get_property("java.awt.headless"); |
126ea7725993
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bobv
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1679
diff
changeset
|
2717 if (headless == NULL) { |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
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1679
diff
changeset
|
2718 char envbuffer[128]; |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
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1679
diff
changeset
|
2719 if (!os::getenv("JAVA_AWT_HEADLESS", envbuffer, sizeof(envbuffer))) { |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
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1679
diff
changeset
|
2720 if (!add_property("java.awt.headless=true")) { |
126ea7725993
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bobv
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1679
diff
changeset
|
2721 return JNI_ENOMEM; |
126ea7725993
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bobv
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1679
diff
changeset
|
2722 } |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
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1679
diff
changeset
|
2723 } else { |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
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1679
diff
changeset
|
2724 char buffer[256]; |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
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1679
diff
changeset
|
2725 strcpy(buffer, "java.awt.headless="); |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
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1679
diff
changeset
|
2726 strcat(buffer, envbuffer); |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
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1679
diff
changeset
|
2727 if (!add_property(buffer)) { |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
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1679
diff
changeset
|
2728 return JNI_ENOMEM; |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
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1679
diff
changeset
|
2729 } |
126ea7725993
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1679
diff
changeset
|
2730 } |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
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1679
diff
changeset
|
2731 } |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
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1679
diff
changeset
|
2732 } |
126ea7725993
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|
2733 |
0 | 2734 if (!check_vm_args_consistency()) { |
2735 return JNI_ERR; | |
2736 } | |
2737 | |
2738 return JNI_OK; | |
2739 } | |
2740 | |
2741 jint Arguments::parse_java_options_environment_variable(SysClassPath* scp_p, bool* scp_assembly_required_p) { | |
2742 return parse_options_environment_variable("_JAVA_OPTIONS", scp_p, | |
2743 scp_assembly_required_p); | |
2744 } | |
2745 | |
2746 jint Arguments::parse_java_tool_options_environment_variable(SysClassPath* scp_p, bool* scp_assembly_required_p) { | |
2747 return parse_options_environment_variable("JAVA_TOOL_OPTIONS", scp_p, | |
2748 scp_assembly_required_p); | |
2749 } | |
2750 | |
2751 jint Arguments::parse_options_environment_variable(const char* name, SysClassPath* scp_p, bool* scp_assembly_required_p) { | |
2752 const int N_MAX_OPTIONS = 64; | |
2753 const int OPTION_BUFFER_SIZE = 1024; | |
2754 char buffer[OPTION_BUFFER_SIZE]; | |
2755 | |
2756 // The variable will be ignored if it exceeds the length of the buffer. | |
2757 // Don't check this variable if user has special privileges | |
2758 // (e.g. unix su command). | |
2759 if (os::getenv(name, buffer, sizeof(buffer)) && | |
2760 !os::have_special_privileges()) { | |
2761 JavaVMOption options[N_MAX_OPTIONS]; // Construct option array | |
2762 jio_fprintf(defaultStream::error_stream(), | |
2763 "Picked up %s: %s\n", name, buffer); | |
2764 char* rd = buffer; // pointer to the input string (rd) | |
2765 int i; | |
2766 for (i = 0; i < N_MAX_OPTIONS;) { // repeat for all options in the input string | |
2767 while (isspace(*rd)) rd++; // skip whitespace | |
2768 if (*rd == 0) break; // we re done when the input string is read completely | |
2769 | |
2770 // The output, option string, overwrites the input string. | |
2771 // Because of quoting, the pointer to the option string (wrt) may lag the pointer to | |
2772 // input string (rd). | |
2773 char* wrt = rd; | |
2774 | |
2775 options[i++].optionString = wrt; // Fill in option | |
2776 while (*rd != 0 && !isspace(*rd)) { // unquoted strings terminate with a space or NULL | |
2777 if (*rd == '\'' || *rd == '"') { // handle a quoted string | |
2778 int quote = *rd; // matching quote to look for | |
2779 rd++; // don't copy open quote | |
2780 while (*rd != quote) { // include everything (even spaces) up until quote | |
2781 if (*rd == 0) { // string termination means unmatched string | |
2782 jio_fprintf(defaultStream::error_stream(), | |
2783 "Unmatched quote in %s\n", name); | |
2784 return JNI_ERR; | |
2785 } | |
2786 *wrt++ = *rd++; // copy to option string | |
2787 } | |
2788 rd++; // don't copy close quote | |
2789 } else { | |
2790 *wrt++ = *rd++; // copy to option string | |
2791 } | |
2792 } | |
2793 // Need to check if we're done before writing a NULL, | |
2794 // because the write could be to the byte that rd is pointing to. | |
2795 if (*rd++ == 0) { | |
2796 *wrt = 0; | |
2797 break; | |
2798 } | |
2799 *wrt = 0; // Zero terminate option | |
2800 } | |
2801 // Construct JavaVMInitArgs structure and parse as if it was part of the command line | |
2802 JavaVMInitArgs vm_args; | |
2803 vm_args.version = JNI_VERSION_1_2; | |
2804 vm_args.options = options; | |
2805 vm_args.nOptions = i; | |
564 | 2806 vm_args.ignoreUnrecognized = IgnoreUnrecognizedVMOptions; |
0 | 2807 |
2808 if (PrintVMOptions) { | |
2809 const char* tail; | |
2810 for (int i = 0; i < vm_args.nOptions; i++) { | |
2811 const JavaVMOption *option = vm_args.options + i; | |
2812 if (match_option(option, "-XX:", &tail)) { | |
2813 logOption(tail); | |
2814 } | |
2815 } | |
2816 } | |
2817 | |
2818 return(parse_each_vm_init_arg(&vm_args, scp_p, scp_assembly_required_p, ENVIRON_VAR)); | |
2819 } | |
2820 return JNI_OK; | |
2821 } | |
2822 | |
2362
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diff
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|
2823 void Arguments::set_shared_spaces_flags() { |
2378 | 2824 const bool must_share = DumpSharedSpaces || RequireSharedSpaces; |
2825 const bool might_share = must_share || UseSharedSpaces; | |
2826 | |
2827 // The string table is part of the shared archive so the size must match. | |
2828 if (!FLAG_IS_DEFAULT(StringTableSize)) { | |
2829 // Disable sharing. | |
2830 if (must_share) { | |
2831 warning("disabling shared archive %s because of non-default " | |
2832 "StringTableSize", DumpSharedSpaces ? "creation" : "use"); | |
2833 } | |
2834 if (might_share) { | |
2835 FLAG_SET_DEFAULT(DumpSharedSpaces, false); | |
2836 FLAG_SET_DEFAULT(RequireSharedSpaces, false); | |
2837 FLAG_SET_DEFAULT(UseSharedSpaces, false); | |
2838 } | |
2839 return; | |
2840 } | |
2841 | |
2362
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
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2302
diff
changeset
|
2842 // Check whether class data sharing settings conflict with GC, compressed oops |
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
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2302
diff
changeset
|
2843 // or page size, and fix them up. Explicit sharing options override other |
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
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2302
diff
changeset
|
2844 // settings. |
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
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2302
diff
changeset
|
2845 const bool cannot_share = UseConcMarkSweepGC || CMSIncrementalMode || |
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
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2302
diff
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|
2846 UseG1GC || UseParNewGC || UseParallelGC || UseParallelOldGC || |
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7018056: large pages not always enabled by default
jcoomes
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2302
diff
changeset
|
2847 UseCompressedOops || UseLargePages && FLAG_IS_CMDLINE(UseLargePages); |
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2848 if (cannot_share) { |
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2849 if (must_share) { |
2378 | 2850 warning("selecting serial gc and disabling large pages %s" |
2851 "because of %s", "" LP64_ONLY("and compressed oops "), | |
2852 DumpSharedSpaces ? "-Xshare:dump" : "-Xshare:on"); | |
2853 force_serial_gc(); | |
2854 FLAG_SET_CMDLINE(bool, UseLargePages, false); | |
2855 LP64_ONLY(FLAG_SET_CMDLINE(bool, UseCompressedOops, false)); | |
2362
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2856 } else { |
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2857 if (UseSharedSpaces && Verbose) { |
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2858 warning("turning off use of shared archive because of " |
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2859 "choice of garbage collector or large pages"); |
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2860 } |
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2861 no_shared_spaces(); |
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2862 } |
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2863 } else if (UseLargePages && might_share) { |
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2864 // 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
|
2865 // there may not even be a shared archive to use. |
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2866 FLAG_SET_DEFAULT(UseLargePages, false); |
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2867 } |
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2868 } |
1891
9de67bf4244d
6996136: VM crash in src/share/vm/runtime/virtualspace.cpp:424
iveresov
parents:
1890
diff
changeset
|
2869 |
0 | 2870 // Parse entry point called from JNI_CreateJavaVM |
2871 | |
2872 jint Arguments::parse(const JavaVMInitArgs* args) { | |
2873 | |
2874 // Sharing support | |
2875 // Construct the path to the archive | |
2876 char jvm_path[JVM_MAXPATHLEN]; | |
2877 os::jvm_path(jvm_path, sizeof(jvm_path)); | |
2878 #ifdef TIERED | |
2879 if (strstr(jvm_path, "client") != NULL) { | |
2880 force_client_mode = true; | |
2881 } | |
2882 #endif // TIERED | |
2883 char *end = strrchr(jvm_path, *os::file_separator()); | |
2884 if (end != NULL) *end = '\0'; | |
2885 char *shared_archive_path = NEW_C_HEAP_ARRAY(char, strlen(jvm_path) + | |
2886 strlen(os::file_separator()) + 20); | |
2887 if (shared_archive_path == NULL) return JNI_ENOMEM; | |
2888 strcpy(shared_archive_path, jvm_path); | |
2889 strcat(shared_archive_path, os::file_separator()); | |
2890 strcat(shared_archive_path, "classes"); | |
2891 DEBUG_ONLY(strcat(shared_archive_path, "_g");) | |
2892 strcat(shared_archive_path, ".jsa"); | |
2893 SharedArchivePath = shared_archive_path; | |
2894 | |
2895 // Remaining part of option string | |
2896 const char* tail; | |
2897 | |
2898 // If flag "-XX:Flags=flags-file" is used it will be the first option to be processed. | |
2899 bool settings_file_specified = false; | |
564 | 2900 const char* flags_file; |
0 | 2901 int index; |
2902 for (index = 0; index < args->nOptions; index++) { | |
2903 const JavaVMOption *option = args->options + index; | |
2904 if (match_option(option, "-XX:Flags=", &tail)) { | |
564 | 2905 flags_file = tail; |
0 | 2906 settings_file_specified = true; |
2907 } | |
2908 if (match_option(option, "-XX:+PrintVMOptions", &tail)) { | |
2909 PrintVMOptions = true; | |
2910 } | |
253
b0fe4deeb9fb
6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.")
kvn
parents:
196
diff
changeset
|
2911 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
|
2912 PrintVMOptions = false; |
b0fe4deeb9fb
6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.")
kvn
parents:
196
diff
changeset
|
2913 } |
564 | 2914 if (match_option(option, "-XX:+IgnoreUnrecognizedVMOptions", &tail)) { |
2915 IgnoreUnrecognizedVMOptions = true; | |
2916 } | |
2917 if (match_option(option, "-XX:-IgnoreUnrecognizedVMOptions", &tail)) { | |
2918 IgnoreUnrecognizedVMOptions = false; | |
2919 } | |
1150 | 2920 if (match_option(option, "-XX:+PrintFlagsInitial", &tail)) { |
2921 CommandLineFlags::printFlags(); | |
2922 vm_exit(0); | |
2923 } | |
1768
6ee479178066
6979444: add command line option to print command line flags descriptions
ikrylov
parents:
1745
diff
changeset
|
2924 |
6ee479178066
6979444: add command line option to print command line flags descriptions
ikrylov
parents:
1745
diff
changeset
|
2925 #ifndef PRODUCT |
6ee479178066
6979444: add command line option to print command line flags descriptions
ikrylov
parents:
1745
diff
changeset
|
2926 if (match_option(option, "-XX:+PrintFlagsWithComments", &tail)) { |
6ee479178066
6979444: add command line option to print command line flags descriptions
ikrylov
parents:
1745
diff
changeset
|
2927 CommandLineFlags::printFlags(true); |
6ee479178066
6979444: add command line option to print command line flags descriptions
ikrylov
parents:
1745
diff
changeset
|
2928 vm_exit(0); |
6ee479178066
6979444: add command line option to print command line flags descriptions
ikrylov
parents:
1745
diff
changeset
|
2929 } |
6ee479178066
6979444: add command line option to print command line flags descriptions
ikrylov
parents:
1745
diff
changeset
|
2930 #endif |
564 | 2931 } |
2932 | |
2933 if (IgnoreUnrecognizedVMOptions) { | |
2934 // uncast const to modify the flag args->ignoreUnrecognized | |
2935 *(jboolean*)(&args->ignoreUnrecognized) = true; | |
2936 } | |
2937 | |
2938 // Parse specified settings file | |
2939 if (settings_file_specified) { | |
2940 if (!process_settings_file(flags_file, true, args->ignoreUnrecognized)) { | |
2941 return JNI_EINVAL; | |
2942 } | |
0 | 2943 } |
2944 | |
2945 // Parse default .hotspotrc settings file | |
2946 if (!settings_file_specified) { | |
2947 if (!process_settings_file(".hotspotrc", false, args->ignoreUnrecognized)) { | |
2948 return JNI_EINVAL; | |
2949 } | |
2950 } | |
2951 | |
2952 if (PrintVMOptions) { | |
2953 for (index = 0; index < args->nOptions; index++) { | |
2954 const JavaVMOption *option = args->options + index; | |
2955 if (match_option(option, "-XX:", &tail)) { | |
2956 logOption(tail); | |
2957 } | |
2958 } | |
2959 } | |
2960 | |
2961 // Parse JavaVMInitArgs structure passed in, as well as JAVA_TOOL_OPTIONS and _JAVA_OPTIONS | |
2962 jint result = parse_vm_init_args(args); | |
2963 if (result != JNI_OK) { | |
2964 return result; | |
2965 } | |
2966 | |
2967 #ifndef PRODUCT | |
2968 if (TraceBytecodesAt != 0) { | |
2969 TraceBytecodes = true; | |
2970 } | |
2971 if (CountCompiledCalls) { | |
2972 if (UseCounterDecay) { | |
2973 warning("UseCounterDecay disabled because CountCalls is set"); | |
2974 UseCounterDecay = false; | |
2975 } | |
2976 } | |
2977 #endif // PRODUCT | |
2978 | |
726
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
712
diff
changeset
|
2979 if (EnableInvokeDynamic && !EnableMethodHandles) { |
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
712
diff
changeset
|
2980 if (!FLAG_IS_DEFAULT(EnableMethodHandles)) { |
989
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
932
diff
changeset
|
2981 warning("forcing EnableMethodHandles true because EnableInvokeDynamic is true"); |
726
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
712
diff
changeset
|
2982 } |
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
712
diff
changeset
|
2983 EnableMethodHandles = true; |
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
712
diff
changeset
|
2984 } |
710 | 2985 if (EnableMethodHandles && !AnonymousClasses) { |
2986 if (!FLAG_IS_DEFAULT(AnonymousClasses)) { | |
989
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
932
diff
changeset
|
2987 warning("forcing AnonymousClasses true because EnableMethodHandles is true"); |
710 | 2988 } |
2989 AnonymousClasses = true; | |
2990 } | |
989
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
932
diff
changeset
|
2991 if ((EnableMethodHandles || AnonymousClasses) && ScavengeRootsInCode == 0) { |
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
932
diff
changeset
|
2992 if (!FLAG_IS_DEFAULT(ScavengeRootsInCode)) { |
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
932
diff
changeset
|
2993 warning("forcing ScavengeRootsInCode non-zero because EnableMethodHandles or AnonymousClasses is true"); |
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
932
diff
changeset
|
2994 } |
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
932
diff
changeset
|
2995 ScavengeRootsInCode = 1; |
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
932
diff
changeset
|
2996 } |
2376
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
never
parents:
2370
diff
changeset
|
2997 if (!JavaObjectsInPerm && ScavengeRootsInCode == 0) { |
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
never
parents:
2370
diff
changeset
|
2998 if (!FLAG_IS_DEFAULT(ScavengeRootsInCode)) { |
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
never
parents:
2370
diff
changeset
|
2999 warning("forcing ScavengeRootsInCode non-zero because JavaObjectsInPerm is false"); |
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
never
parents:
2370
diff
changeset
|
3000 } |
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
never
parents:
2370
diff
changeset
|
3001 ScavengeRootsInCode = 1; |
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
never
parents:
2370
diff
changeset
|
3002 } |
710 | 3003 |
0 | 3004 if (PrintGCDetails) { |
3005 // Turn on -verbose:gc options as well | |
3006 PrintGC = true; | |
3007 } | |
3008 | |
1571
2d127394260e
6916623: Align object to 16 bytes to use Compressed Oops with java heap up to 64Gb
kvn
parents:
1506
diff
changeset
|
3009 // 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
|
3010 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
|
3011 |
0 | 3012 #ifdef SERIALGC |
1064 | 3013 force_serial_gc(); |
0 | 3014 #endif // SERIALGC |
3015 #ifdef KERNEL | |
3016 no_shared_spaces(); | |
3017 #endif // KERNEL | |
3018 | |
3019 // Set flags based on ergonomics. | |
3020 set_ergonomics_flags(); | |
3021 | |
2362
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
3022 set_shared_spaces_flags(); |
1135
e66fd840cb6b
6893081: method handle & invokedynamic code needs additional cleanup (post 6815692, 6858164)
twisti
parents:
1131
diff
changeset
|
3023 |
10
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
3024 // Check the GC selections again. |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
3025 if (!check_gc_consistency()) { |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
3026 return JNI_EINVAL; |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
3027 } |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
3028 |
1783 | 3029 if (TieredCompilation) { |
3030 set_tiered_flags(); | |
3031 } else { | |
3032 // Check if the policy is valid. Policies 0 and 1 are valid for non-tiered setup. | |
3033 if (CompilationPolicyChoice >= 2) { | |
3034 vm_exit_during_initialization( | |
3035 "Incompatible compilation policy selected", NULL); | |
3036 } | |
3037 } | |
3038 | |
1145
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1074
diff
changeset
|
3039 #ifndef KERNEL |
2368
dde920245681
6896099: Integrate CMS heap ergo with default heap sizing ergo
ysr
parents:
2366
diff
changeset
|
3040 // Set heap size based on available physical memory |
dde920245681
6896099: Integrate CMS heap ergo with default heap sizing ergo
ysr
parents:
2366
diff
changeset
|
3041 set_heap_size(); |
dde920245681
6896099: Integrate CMS heap ergo with default heap sizing ergo
ysr
parents:
2366
diff
changeset
|
3042 // Set per-collector flags |
dde920245681
6896099: Integrate CMS heap ergo with default heap sizing ergo
ysr
parents:
2366
diff
changeset
|
3043 if (UseParallelGC || UseParallelOldGC) { |
dde920245681
6896099: Integrate CMS heap ergo with default heap sizing ergo
ysr
parents:
2366
diff
changeset
|
3044 set_parallel_gc_flags(); |
dde920245681
6896099: Integrate CMS heap ergo with default heap sizing ergo
ysr
parents:
2366
diff
changeset
|
3045 } 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
|
3046 set_cms_and_parnew_gc_flags(); |
2368
dde920245681
6896099: Integrate CMS heap ergo with default heap sizing ergo
ysr
parents:
2366
diff
changeset
|
3047 } 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
|
3048 set_parnew_gc_flags(); |
dde920245681
6896099: Integrate CMS heap ergo with default heap sizing ergo
ysr
parents:
2366
diff
changeset
|
3049 } else if (UseG1GC) { |
dde920245681
6896099: Integrate CMS heap ergo with default heap sizing ergo
ysr
parents:
2366
diff
changeset
|
3050 set_g1_gc_flags(); |
342
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
135
diff
changeset
|
3051 } |
1145
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1074
diff
changeset
|
3052 #endif // KERNEL |
10
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
3053 |
0 | 3054 #ifdef SERIALGC |
3055 assert(verify_serial_gc_flags(), "SerialGC unset"); | |
3056 #endif // SERIALGC | |
3057 | |
3058 // Set bytecode rewriting flags | |
3059 set_bytecode_flags(); | |
3060 | |
3061 // Set flags if Aggressive optimization flags (-XX:+AggressiveOpts) enabled. | |
3062 set_aggressive_opts_flags(); | |
3063 | |
2239
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3064 // Turn off biased locking for locking debug mode flags, |
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3065 // 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
|
3066 // biased locking. |
2331 | 3067 if (UseHeavyMonitors |
3068 #ifdef COMPILER1 | |
3069 || !UseFastLocking | |
3070 #endif // COMPILER1 | |
3071 ) { | |
2239
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3072 if (!FLAG_IS_DEFAULT(UseBiasedLocking) && UseBiasedLocking) { |
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3073 // 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
|
3074 // can't enable biased locking here |
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3075 warning("Biased Locking is not supported with locking debug flags" |
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3076 "; ignoring UseBiasedLocking flag." ); |
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3077 } |
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3078 UseBiasedLocking = false; |
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3079 } |
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3080 |
0 | 3081 #ifdef CC_INTERP |
1131 | 3082 // Clear flags not supported by the C++ interpreter |
3083 FLAG_SET_DEFAULT(ProfileInterpreter, false); | |
0 | 3084 FLAG_SET_DEFAULT(UseBiasedLocking, false); |
1131 | 3085 LP64_ONLY(FLAG_SET_DEFAULT(UseCompressedOops, false)); |
3086 #endif // CC_INTERP | |
3087 | |
420
a1980da045cc
6462850: generate biased locking code in C2 ideal graph
kvn
parents:
416
diff
changeset
|
3088 #ifdef COMPILER2 |
a1980da045cc
6462850: generate biased locking code in C2 ideal graph
kvn
parents:
416
diff
changeset
|
3089 if (!UseBiasedLocking || EmitSync != 0) { |
a1980da045cc
6462850: generate biased locking code in C2 ideal graph
kvn
parents:
416
diff
changeset
|
3090 UseOptoBiasInlining = false; |
a1980da045cc
6462850: generate biased locking code in C2 ideal graph
kvn
parents:
416
diff
changeset
|
3091 } |
a1980da045cc
6462850: generate biased locking code in C2 ideal graph
kvn
parents:
416
diff
changeset
|
3092 #endif |
a1980da045cc
6462850: generate biased locking code in C2 ideal graph
kvn
parents:
416
diff
changeset
|
3093 |
1155
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1150
diff
changeset
|
3094 if (PrintAssembly && FLAG_IS_DEFAULT(DebugNonSafepoints)) { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1150
diff
changeset
|
3095 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
|
3096 DebugNonSafepoints = true; |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1150
diff
changeset
|
3097 } |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1150
diff
changeset
|
3098 |
1188
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents:
1161
diff
changeset
|
3099 #ifndef PRODUCT |
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
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3100 if (CompileTheWorld) { |
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3101 // Force NmethodSweeper to sweep whole CodeCache each time. |
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3102 if (FLAG_IS_DEFAULT(NmethodSweepFraction)) { |
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3103 NmethodSweepFraction = 1; |
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3104 } |
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3105 } |
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3106 #endif |
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3107 |
0 | 3108 if (PrintCommandLineFlags) { |
3109 CommandLineFlags::printSetFlags(); | |
3110 } | |
3111 | |
1681
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3112 // Apply CPU specific policy for the BiasedLocking |
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3113 if (UseBiasedLocking) { |
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3114 if (!VM_Version::use_biased_locking() && |
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3115 !(FLAG_IS_CMDLINE(UseBiasedLocking))) { |
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3116 UseBiasedLocking = false; |
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3117 } |
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3118 } |
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3119 |
2302
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3120 // set PauseAtExit if the gamma launcher was used and a debugger is attached |
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3121 // but only if not already set on the commandline |
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3122 if (Arguments::created_by_gamma_launcher() && os::is_debugger_attached()) { |
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3123 bool set = false; |
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3124 CommandLineFlags::wasSetOnCmdline("PauseAtExit", &set); |
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3125 if (!set) { |
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3126 FLAG_SET_DEFAULT(PauseAtExit, true); |
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3127 } |
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3128 } |
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3129 |
0 | 3130 return JNI_OK; |
3131 } | |
3132 | |
3133 int Arguments::PropertyList_count(SystemProperty* pl) { | |
3134 int count = 0; | |
3135 while(pl != NULL) { | |
3136 count++; | |
3137 pl = pl->next(); | |
3138 } | |
3139 return count; | |
3140 } | |
3141 | |
3142 const char* Arguments::PropertyList_get_value(SystemProperty *pl, const char* key) { | |
3143 assert(key != NULL, "just checking"); | |
3144 SystemProperty* prop; | |
3145 for (prop = pl; prop != NULL; prop = prop->next()) { | |
3146 if (strcmp(key, prop->key()) == 0) return prop->value(); | |
3147 } | |
3148 return NULL; | |
3149 } | |
3150 | |
3151 const char* Arguments::PropertyList_get_key_at(SystemProperty *pl, int index) { | |
3152 int count = 0; | |
3153 const char* ret_val = NULL; | |
3154 | |
3155 while(pl != NULL) { | |
3156 if(count >= index) { | |
3157 ret_val = pl->key(); | |
3158 break; | |
3159 } | |
3160 count++; | |
3161 pl = pl->next(); | |
3162 } | |
3163 | |
3164 return ret_val; | |
3165 } | |
3166 | |
3167 char* Arguments::PropertyList_get_value_at(SystemProperty* pl, int index) { | |
3168 int count = 0; | |
3169 char* ret_val = NULL; | |
3170 | |
3171 while(pl != NULL) { | |
3172 if(count >= index) { | |
3173 ret_val = pl->value(); | |
3174 break; | |
3175 } | |
3176 count++; | |
3177 pl = pl->next(); | |
3178 } | |
3179 | |
3180 return ret_val; | |
3181 } | |
3182 | |
3183 void Arguments::PropertyList_add(SystemProperty** plist, SystemProperty *new_p) { | |
3184 SystemProperty* p = *plist; | |
3185 if (p == NULL) { | |
3186 *plist = new_p; | |
3187 } else { | |
3188 while (p->next() != NULL) { | |
3189 p = p->next(); | |
3190 } | |
3191 p->set_next(new_p); | |
3192 } | |
3193 } | |
3194 | |
3195 void Arguments::PropertyList_add(SystemProperty** plist, const char* k, char* v) { | |
3196 if (plist == NULL) | |
3197 return; | |
3198 | |
3199 SystemProperty* new_p = new SystemProperty(k, v, true); | |
3200 PropertyList_add(plist, new_p); | |
3201 } | |
3202 | |
3203 // This add maintains unique property key in the list. | |
691 | 3204 void Arguments::PropertyList_unique_add(SystemProperty** plist, const char* k, char* v, jboolean append) { |
0 | 3205 if (plist == NULL) |
3206 return; | |
3207 | |
3208 // If property key exist then update with new value. | |
3209 SystemProperty* prop; | |
3210 for (prop = *plist; prop != NULL; prop = prop->next()) { | |
3211 if (strcmp(k, prop->key()) == 0) { | |
691 | 3212 if (append) { |
3213 prop->append_value(v); | |
3214 } else { | |
3215 prop->set_value(v); | |
3216 } | |
0 | 3217 return; |
3218 } | |
3219 } | |
3220 | |
3221 PropertyList_add(plist, k, v); | |
3222 } | |
3223 | |
3224 #ifdef KERNEL | |
3225 char *Arguments::get_kernel_properties() { | |
3226 // Find properties starting with kernel and append them to string | |
3227 // We need to find out how long they are first because the URL's that they | |
3228 // might point to could get long. | |
3229 int length = 0; | |
3230 SystemProperty* prop; | |
3231 for (prop = _system_properties; prop != NULL; prop = prop->next()) { | |
3232 if (strncmp(prop->key(), "kernel.", 7 ) == 0) { | |
3233 length += (strlen(prop->key()) + strlen(prop->value()) + 5); // "-D =" | |
3234 } | |
3235 } | |
3236 // Add one for null terminator. | |
3237 char *props = AllocateHeap(length + 1, "get_kernel_properties"); | |
3238 if (length != 0) { | |
3239 int pos = 0; | |
3240 for (prop = _system_properties; prop != NULL; prop = prop->next()) { | |
3241 if (strncmp(prop->key(), "kernel.", 7 ) == 0) { | |
3242 jio_snprintf(&props[pos], length-pos, | |
3243 "-D%s=%s ", prop->key(), prop->value()); | |
3244 pos = strlen(props); | |
3245 } | |
3246 } | |
3247 } | |
3248 // null terminate props in case of null | |
3249 props[length] = '\0'; | |
3250 return props; | |
3251 } | |
3252 #endif // KERNEL | |
3253 | |
3254 // Copies src into buf, replacing "%%" with "%" and "%p" with pid | |
3255 // Returns true if all of the source pointed by src has been copied over to | |
3256 // the destination buffer pointed by buf. Otherwise, returns false. | |
3257 // Notes: | |
3258 // 1. If the length (buflen) of the destination buffer excluding the | |
3259 // NULL terminator character is not long enough for holding the expanded | |
3260 // pid characters, it also returns false instead of returning the partially | |
3261 // expanded one. | |
3262 // 2. The passed in "buflen" should be large enough to hold the null terminator. | |
3263 bool Arguments::copy_expand_pid(const char* src, size_t srclen, | |
3264 char* buf, size_t buflen) { | |
3265 const char* p = src; | |
3266 char* b = buf; | |
3267 const char* src_end = &src[srclen]; | |
3268 char* buf_end = &buf[buflen - 1]; | |
3269 | |
3270 while (p < src_end && b < buf_end) { | |
3271 if (*p == '%') { | |
3272 switch (*(++p)) { | |
3273 case '%': // "%%" ==> "%" | |
3274 *b++ = *p++; | |
3275 break; | |
3276 case 'p': { // "%p" ==> current process id | |
3277 // buf_end points to the character before the last character so | |
3278 // that we could write '\0' to the end of the buffer. | |
3279 size_t buf_sz = buf_end - b + 1; | |
3280 int ret = jio_snprintf(b, buf_sz, "%d", os::current_process_id()); | |
3281 | |
3282 // if jio_snprintf fails or the buffer is not long enough to hold | |
3283 // the expanded pid, returns false. | |
3284 if (ret < 0 || ret >= (int)buf_sz) { | |
3285 return false; | |
3286 } else { | |
3287 b += ret; | |
3288 assert(*b == '\0', "fail in copy_expand_pid"); | |
3289 if (p == src_end && b == buf_end + 1) { | |
3290 // reach the end of the buffer. | |
3291 return true; | |
3292 } | |
3293 } | |
3294 p++; | |
3295 break; | |
3296 } | |
3297 default : | |
3298 *b++ = '%'; | |
3299 } | |
3300 } else { | |
3301 *b++ = *p++; | |
3302 } | |
3303 } | |
3304 *b = '\0'; | |
3305 return (p == src_end); // return false if not all of the source was copied | |
3306 } |