Mercurial > hg > truffle
annotate src/share/vm/runtime/arguments.cpp @ 2831:f072013daba9
Added lookup method.
author | Thomas Wuerthinger <thomas@wuerthinger.net> |
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date | Tue, 31 May 2011 11:32:48 +0200 |
parents | 8fcf5179aafd |
children | 810e2d253e00 |
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 |
2474 | 62 // Note: This is a special bug reporting site for the JVM |
63 #define DEFAULT_VENDOR_URL_BUG "http://bugreport.sun.com/bugreport/crash.jsp" | |
0 | 64 #define DEFAULT_JAVA_LAUNCHER "generic" |
65 | |
66 char** Arguments::_jvm_flags_array = NULL; | |
67 int Arguments::_num_jvm_flags = 0; | |
68 char** Arguments::_jvm_args_array = NULL; | |
69 int Arguments::_num_jvm_args = 0; | |
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70 char** Arguments::_c1x_args_array = NULL; |
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71 int Arguments::_num_c1x_args = 0; |
0 | 72 char* Arguments::_java_command = NULL; |
73 SystemProperty* Arguments::_system_properties = NULL; | |
74 const char* Arguments::_gc_log_filename = NULL; | |
75 bool Arguments::_has_profile = false; | |
76 bool Arguments::_has_alloc_profile = false; | |
77 uintx Arguments::_min_heap_size = 0; | |
78 Arguments::Mode Arguments::_mode = _mixed; | |
79 bool Arguments::_java_compiler = false; | |
80 bool Arguments::_xdebug_mode = false; | |
81 const char* Arguments::_java_vendor_url_bug = DEFAULT_VENDOR_URL_BUG; | |
82 const char* Arguments::_sun_java_launcher = DEFAULT_JAVA_LAUNCHER; | |
83 int Arguments::_sun_java_launcher_pid = -1; | |
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84 bool Arguments::_created_by_gamma_launcher = false; |
0 | 85 |
86 // These parameters are reset in method parse_vm_init_args(JavaVMInitArgs*) | |
87 bool Arguments::_AlwaysCompileLoopMethods = AlwaysCompileLoopMethods; | |
88 bool Arguments::_UseOnStackReplacement = UseOnStackReplacement; | |
89 bool Arguments::_BackgroundCompilation = BackgroundCompilation; | |
90 bool Arguments::_ClipInlining = ClipInlining; | |
91 | |
92 char* Arguments::SharedArchivePath = NULL; | |
93 | |
94 AgentLibraryList Arguments::_libraryList; | |
95 AgentLibraryList Arguments::_agentList; | |
96 | |
97 abort_hook_t Arguments::_abort_hook = NULL; | |
98 exit_hook_t Arguments::_exit_hook = NULL; | |
99 vfprintf_hook_t Arguments::_vfprintf_hook = NULL; | |
100 | |
101 | |
102 SystemProperty *Arguments::_java_ext_dirs = NULL; | |
103 SystemProperty *Arguments::_java_endorsed_dirs = NULL; | |
104 SystemProperty *Arguments::_sun_boot_library_path = NULL; | |
105 SystemProperty *Arguments::_java_library_path = NULL; | |
106 SystemProperty *Arguments::_java_home = NULL; | |
107 SystemProperty *Arguments::_java_class_path = NULL; | |
108 SystemProperty *Arguments::_sun_boot_class_path = NULL; | |
109 | |
110 char* Arguments::_meta_index_path = NULL; | |
111 char* Arguments::_meta_index_dir = NULL; | |
112 | |
113 static bool force_client_mode = false; | |
114 | |
115 // Check if head of 'option' matches 'name', and sets 'tail' remaining part of option string | |
116 | |
117 static bool match_option(const JavaVMOption *option, const char* name, | |
118 const char** tail) { | |
119 int len = (int)strlen(name); | |
120 if (strncmp(option->optionString, name, len) == 0) { | |
121 *tail = option->optionString + len; | |
122 return true; | |
123 } else { | |
124 return false; | |
125 } | |
126 } | |
127 | |
128 static void logOption(const char* opt) { | |
129 if (PrintVMOptions) { | |
130 jio_fprintf(defaultStream::output_stream(), "VM option '%s'\n", opt); | |
131 } | |
132 } | |
133 | |
134 // Process java launcher properties. | |
135 void Arguments::process_sun_java_launcher_properties(JavaVMInitArgs* args) { | |
136 // See if sun.java.launcher or sun.java.launcher.pid is defined. | |
137 // Must do this before setting up other system properties, | |
138 // as some of them may depend on launcher type. | |
139 for (int index = 0; index < args->nOptions; index++) { | |
140 const JavaVMOption* option = args->options + index; | |
141 const char* tail; | |
142 | |
143 if (match_option(option, "-Dsun.java.launcher=", &tail)) { | |
144 process_java_launcher_argument(tail, option->extraInfo); | |
145 continue; | |
146 } | |
147 if (match_option(option, "-Dsun.java.launcher.pid=", &tail)) { | |
148 _sun_java_launcher_pid = atoi(tail); | |
149 continue; | |
150 } | |
151 } | |
152 } | |
153 | |
154 // Initialize system properties key and value. | |
155 void Arguments::init_system_properties() { | |
156 | |
157 PropertyList_add(&_system_properties, new SystemProperty("java.vm.specification.name", | |
158 "Java Virtual Machine Specification", false)); | |
159 PropertyList_add(&_system_properties, new SystemProperty("java.vm.version", VM_Version::vm_release(), false)); | |
160 PropertyList_add(&_system_properties, new SystemProperty("java.vm.name", VM_Version::vm_name(), false)); | |
161 PropertyList_add(&_system_properties, new SystemProperty("java.vm.info", VM_Version::vm_info_string(), true)); | |
162 | |
163 // following are JVMTI agent writeable properties. | |
164 // Properties values are set to NULL and they are | |
165 // os specific they are initialized in os::init_system_properties_values(). | |
166 _java_ext_dirs = new SystemProperty("java.ext.dirs", NULL, true); | |
167 _java_endorsed_dirs = new SystemProperty("java.endorsed.dirs", NULL, true); | |
168 _sun_boot_library_path = new SystemProperty("sun.boot.library.path", NULL, true); | |
169 _java_library_path = new SystemProperty("java.library.path", NULL, true); | |
170 _java_home = new SystemProperty("java.home", NULL, true); | |
171 _sun_boot_class_path = new SystemProperty("sun.boot.class.path", NULL, true); | |
172 | |
173 _java_class_path = new SystemProperty("java.class.path", "", true); | |
174 | |
175 // Add to System Property list. | |
176 PropertyList_add(&_system_properties, _java_ext_dirs); | |
177 PropertyList_add(&_system_properties, _java_endorsed_dirs); | |
178 PropertyList_add(&_system_properties, _sun_boot_library_path); | |
179 PropertyList_add(&_system_properties, _java_library_path); | |
180 PropertyList_add(&_system_properties, _java_home); | |
181 PropertyList_add(&_system_properties, _java_class_path); | |
182 PropertyList_add(&_system_properties, _sun_boot_class_path); | |
183 | |
184 // Set OS specific system properties values | |
185 os::init_system_properties_values(); | |
186 } | |
187 | |
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188 |
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189 // Update/Initialize System properties after JDK version number is known |
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190 void Arguments::init_version_specific_system_properties() { |
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191 enum { bufsz = 16 }; |
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192 char buffer[bufsz]; |
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193 const char* spec_vendor = "Sun Microsystems Inc."; |
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194 uint32_t spec_version = 0; |
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195 |
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196 if (JDK_Version::is_gte_jdk17x_version()) { |
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197 spec_vendor = "Oracle Corporation"; |
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198 spec_version = JDK_Version::current().major_version(); |
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199 } |
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200 jio_snprintf(buffer, bufsz, "1." UINT32_FORMAT, spec_version); |
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201 |
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202 PropertyList_add(&_system_properties, |
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203 new SystemProperty("java.vm.specification.vendor", spec_vendor, false)); |
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204 PropertyList_add(&_system_properties, |
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205 new SystemProperty("java.vm.specification.version", buffer, false)); |
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206 PropertyList_add(&_system_properties, |
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207 new SystemProperty("java.vm.vendor", VM_Version::vm_vendor(), false)); |
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208 } |
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209 |
242 | 210 /** |
211 * Provide a slightly more user-friendly way of eliminating -XX flags. | |
212 * When a flag is eliminated, it can be added to this list in order to | |
213 * continue accepting this flag on the command-line, while issuing a warning | |
214 * and ignoring the value. Once the JDK version reaches the 'accept_until' | |
215 * limit, we flatly refuse to admit the existence of the flag. This allows | |
216 * a flag to die correctly over JDK releases using HSX. | |
217 */ | |
218 typedef struct { | |
219 const char* name; | |
220 JDK_Version obsoleted_in; // when the flag went away | |
221 JDK_Version accept_until; // which version to start denying the existence | |
222 } ObsoleteFlag; | |
0 | 223 |
242 | 224 static ObsoleteFlag obsolete_jvm_flags[] = { |
225 { "UseTrainGC", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
226 { "UseSpecialLargeObjectHandling", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
227 { "UseOversizedCarHandling", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
228 { "TraceCarAllocation", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
229 { "PrintTrainGCProcessingStats", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
230 { "LogOfCarSpaceSize", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
231 { "OversizedCarThreshold", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
232 { "MinTickInterval", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
233 { "DefaultTickInterval", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
234 { "MaxTickInterval", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
235 { "DelayTickAdjustment", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
236 { "ProcessingToTenuringRatio", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
237 { "MinTrainLength", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
238 { "AppendRatio", JDK_Version::jdk_update(6,10), JDK_Version::jdk(7) }, | |
1064 | 239 { "DefaultMaxRAM", JDK_Version::jdk_update(6,18), JDK_Version::jdk(7) }, |
240 { "DefaultInitialRAMFraction", | |
241 JDK_Version::jdk_update(6,18), JDK_Version::jdk(7) }, | |
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242 { "UseDepthFirstScavengeOrder", |
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243 JDK_Version::jdk_update(6,22), JDK_Version::jdk(7) }, |
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244 { "HandlePromotionFailure", |
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245 JDK_Version::jdk_update(6,24), JDK_Version::jdk(8) }, |
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246 { "MaxLiveObjectEvacuationRatio", |
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247 JDK_Version::jdk_update(6,24), JDK_Version::jdk(8) }, |
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248 { "ForceSharedSpaces", JDK_Version::jdk_update(6,25), JDK_Version::jdk(8) }, |
2460 | 249 { "AllowTransitionalJSR292", JDK_Version::jdk(7), JDK_Version::jdk(8) }, |
242 | 250 { NULL, JDK_Version(0), JDK_Version(0) } |
251 }; | |
252 | |
253 // Returns true if the flag is obsolete and fits into the range specified | |
254 // for being ignored. In the case that the flag is ignored, the 'version' | |
255 // value is filled in with the version number when the flag became | |
256 // obsolete so that that value can be displayed to the user. | |
257 bool Arguments::is_newly_obsolete(const char *s, JDK_Version* version) { | |
0 | 258 int i = 0; |
242 | 259 assert(version != NULL, "Must provide a version buffer"); |
260 while (obsolete_jvm_flags[i].name != NULL) { | |
261 const ObsoleteFlag& flag_status = obsolete_jvm_flags[i]; | |
0 | 262 // <flag>=xxx form |
263 // [-|+]<flag> form | |
242 | 264 if ((strncmp(flag_status.name, s, strlen(flag_status.name)) == 0) || |
0 | 265 ((s[0] == '+' || s[0] == '-') && |
242 | 266 (strncmp(flag_status.name, &s[1], strlen(flag_status.name)) == 0))) { |
267 if (JDK_Version::current().compare(flag_status.accept_until) == -1) { | |
268 *version = flag_status.obsoleted_in; | |
269 return true; | |
270 } | |
0 | 271 } |
272 i++; | |
273 } | |
274 return false; | |
275 } | |
276 | |
277 // Constructs the system class path (aka boot class path) from the following | |
278 // components, in order: | |
279 // | |
280 // prefix // from -Xbootclasspath/p:... | |
281 // endorsed // the expansion of -Djava.endorsed.dirs=... | |
282 // base // from os::get_system_properties() or -Xbootclasspath= | |
283 // suffix // from -Xbootclasspath/a:... | |
284 // | |
285 // java.endorsed.dirs is a list of directories; any jar or zip files in the | |
286 // directories are added to the sysclasspath just before the base. | |
287 // | |
288 // This could be AllStatic, but it isn't needed after argument processing is | |
289 // complete. | |
290 class SysClassPath: public StackObj { | |
291 public: | |
292 SysClassPath(const char* base); | |
293 ~SysClassPath(); | |
294 | |
295 inline void set_base(const char* base); | |
296 inline void add_prefix(const char* prefix); | |
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297 inline void add_suffix_to_prefix(const char* suffix); |
0 | 298 inline void add_suffix(const char* suffix); |
299 inline void reset_path(const char* base); | |
300 | |
301 // Expand the jar/zip files in each directory listed by the java.endorsed.dirs | |
302 // property. Must be called after all command-line arguments have been | |
303 // processed (in particular, -Djava.endorsed.dirs=...) and before calling | |
304 // combined_path(). | |
305 void expand_endorsed(); | |
306 | |
307 inline const char* get_base() const { return _items[_scp_base]; } | |
308 inline const char* get_prefix() const { return _items[_scp_prefix]; } | |
309 inline const char* get_suffix() const { return _items[_scp_suffix]; } | |
310 inline const char* get_endorsed() const { return _items[_scp_endorsed]; } | |
311 | |
312 // Combine all the components into a single c-heap-allocated string; caller | |
313 // must free the string if/when no longer needed. | |
314 char* combined_path(); | |
315 | |
316 private: | |
317 // Utility routines. | |
318 static char* add_to_path(const char* path, const char* str, bool prepend); | |
319 static char* add_jars_to_path(char* path, const char* directory); | |
320 | |
321 inline void reset_item_at(int index); | |
322 | |
323 // Array indices for the items that make up the sysclasspath. All except the | |
324 // base are allocated in the C heap and freed by this class. | |
325 enum { | |
326 _scp_prefix, // from -Xbootclasspath/p:... | |
327 _scp_endorsed, // the expansion of -Djava.endorsed.dirs=... | |
328 _scp_base, // the default sysclasspath | |
329 _scp_suffix, // from -Xbootclasspath/a:... | |
330 _scp_nitems // the number of items, must be last. | |
331 }; | |
332 | |
333 const char* _items[_scp_nitems]; | |
334 DEBUG_ONLY(bool _expansion_done;) | |
335 }; | |
336 | |
337 SysClassPath::SysClassPath(const char* base) { | |
338 memset(_items, 0, sizeof(_items)); | |
339 _items[_scp_base] = base; | |
340 DEBUG_ONLY(_expansion_done = false;) | |
341 } | |
342 | |
343 SysClassPath::~SysClassPath() { | |
344 // Free everything except the base. | |
345 for (int i = 0; i < _scp_nitems; ++i) { | |
346 if (i != _scp_base) reset_item_at(i); | |
347 } | |
348 DEBUG_ONLY(_expansion_done = false;) | |
349 } | |
350 | |
351 inline void SysClassPath::set_base(const char* base) { | |
352 _items[_scp_base] = base; | |
353 } | |
354 | |
355 inline void SysClassPath::add_prefix(const char* prefix) { | |
356 _items[_scp_prefix] = add_to_path(_items[_scp_prefix], prefix, true); | |
357 } | |
358 | |
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359 inline void SysClassPath::add_suffix_to_prefix(const char* suffix) { |
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360 _items[_scp_prefix] = add_to_path(_items[_scp_prefix], suffix, false); |
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361 } |
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362 |
0 | 363 inline void SysClassPath::add_suffix(const char* suffix) { |
364 _items[_scp_suffix] = add_to_path(_items[_scp_suffix], suffix, false); | |
365 } | |
366 | |
367 inline void SysClassPath::reset_item_at(int index) { | |
368 assert(index < _scp_nitems && index != _scp_base, "just checking"); | |
369 if (_items[index] != NULL) { | |
370 FREE_C_HEAP_ARRAY(char, _items[index]); | |
371 _items[index] = NULL; | |
372 } | |
373 } | |
374 | |
375 inline void SysClassPath::reset_path(const char* base) { | |
376 // Clear the prefix and suffix. | |
377 reset_item_at(_scp_prefix); | |
378 reset_item_at(_scp_suffix); | |
379 set_base(base); | |
380 } | |
381 | |
382 //------------------------------------------------------------------------------ | |
383 | |
384 void SysClassPath::expand_endorsed() { | |
385 assert(_items[_scp_endorsed] == NULL, "can only be called once."); | |
386 | |
387 const char* path = Arguments::get_property("java.endorsed.dirs"); | |
388 if (path == NULL) { | |
389 path = Arguments::get_endorsed_dir(); | |
390 assert(path != NULL, "no default for java.endorsed.dirs"); | |
391 } | |
392 | |
393 char* expanded_path = NULL; | |
394 const char separator = *os::path_separator(); | |
395 const char* const end = path + strlen(path); | |
396 while (path < end) { | |
397 const char* tmp_end = strchr(path, separator); | |
398 if (tmp_end == NULL) { | |
399 expanded_path = add_jars_to_path(expanded_path, path); | |
400 path = end; | |
401 } else { | |
402 char* dirpath = NEW_C_HEAP_ARRAY(char, tmp_end - path + 1); | |
403 memcpy(dirpath, path, tmp_end - path); | |
404 dirpath[tmp_end - path] = '\0'; | |
405 expanded_path = add_jars_to_path(expanded_path, dirpath); | |
406 FREE_C_HEAP_ARRAY(char, dirpath); | |
407 path = tmp_end + 1; | |
408 } | |
409 } | |
410 _items[_scp_endorsed] = expanded_path; | |
411 DEBUG_ONLY(_expansion_done = true;) | |
412 } | |
413 | |
414 // Combine the bootclasspath elements, some of which may be null, into a single | |
415 // c-heap-allocated string. | |
416 char* SysClassPath::combined_path() { | |
417 assert(_items[_scp_base] != NULL, "empty default sysclasspath"); | |
418 assert(_expansion_done, "must call expand_endorsed() first."); | |
419 | |
420 size_t lengths[_scp_nitems]; | |
421 size_t total_len = 0; | |
422 | |
423 const char separator = *os::path_separator(); | |
424 | |
425 // Get the lengths. | |
426 int i; | |
427 for (i = 0; i < _scp_nitems; ++i) { | |
428 if (_items[i] != NULL) { | |
429 lengths[i] = strlen(_items[i]); | |
430 // Include space for the separator char (or a NULL for the last item). | |
431 total_len += lengths[i] + 1; | |
432 } | |
433 } | |
434 assert(total_len > 0, "empty sysclasspath not allowed"); | |
435 | |
436 // Copy the _items to a single string. | |
437 char* cp = NEW_C_HEAP_ARRAY(char, total_len); | |
438 char* cp_tmp = cp; | |
439 for (i = 0; i < _scp_nitems; ++i) { | |
440 if (_items[i] != NULL) { | |
441 memcpy(cp_tmp, _items[i], lengths[i]); | |
442 cp_tmp += lengths[i]; | |
443 *cp_tmp++ = separator; | |
444 } | |
445 } | |
446 *--cp_tmp = '\0'; // Replace the extra separator. | |
447 return cp; | |
448 } | |
449 | |
450 // Note: path must be c-heap-allocated (or NULL); it is freed if non-null. | |
451 char* | |
452 SysClassPath::add_to_path(const char* path, const char* str, bool prepend) { | |
453 char *cp; | |
454 | |
455 assert(str != NULL, "just checking"); | |
456 if (path == NULL) { | |
457 size_t len = strlen(str) + 1; | |
458 cp = NEW_C_HEAP_ARRAY(char, len); | |
459 memcpy(cp, str, len); // copy the trailing null | |
460 } else { | |
461 const char separator = *os::path_separator(); | |
462 size_t old_len = strlen(path); | |
463 size_t str_len = strlen(str); | |
464 size_t len = old_len + str_len + 2; | |
465 | |
466 if (prepend) { | |
467 cp = NEW_C_HEAP_ARRAY(char, len); | |
468 char* cp_tmp = cp; | |
469 memcpy(cp_tmp, str, str_len); | |
470 cp_tmp += str_len; | |
471 *cp_tmp = separator; | |
472 memcpy(++cp_tmp, path, old_len + 1); // copy the trailing null | |
473 FREE_C_HEAP_ARRAY(char, path); | |
474 } else { | |
475 cp = REALLOC_C_HEAP_ARRAY(char, path, len); | |
476 char* cp_tmp = cp + old_len; | |
477 *cp_tmp = separator; | |
478 memcpy(++cp_tmp, str, str_len + 1); // copy the trailing null | |
479 } | |
480 } | |
481 return cp; | |
482 } | |
483 | |
484 // Scan the directory and append any jar or zip files found to path. | |
485 // Note: path must be c-heap-allocated (or NULL); it is freed if non-null. | |
486 char* SysClassPath::add_jars_to_path(char* path, const char* directory) { | |
487 DIR* dir = os::opendir(directory); | |
488 if (dir == NULL) return path; | |
489 | |
490 char dir_sep[2] = { '\0', '\0' }; | |
491 size_t directory_len = strlen(directory); | |
492 const char fileSep = *os::file_separator(); | |
493 if (directory[directory_len - 1] != fileSep) dir_sep[0] = fileSep; | |
494 | |
495 /* Scan the directory for jars/zips, appending them to path. */ | |
496 struct dirent *entry; | |
497 char *dbuf = NEW_C_HEAP_ARRAY(char, os::readdir_buf_size(directory)); | |
498 while ((entry = os::readdir(dir, (dirent *) dbuf)) != NULL) { | |
499 const char* name = entry->d_name; | |
500 const char* ext = name + strlen(name) - 4; | |
501 bool isJarOrZip = ext > name && | |
502 (os::file_name_strcmp(ext, ".jar") == 0 || | |
503 os::file_name_strcmp(ext, ".zip") == 0); | |
504 if (isJarOrZip) { | |
505 char* jarpath = NEW_C_HEAP_ARRAY(char, directory_len + 2 + strlen(name)); | |
506 sprintf(jarpath, "%s%s%s", directory, dir_sep, name); | |
507 path = add_to_path(path, jarpath, false); | |
508 FREE_C_HEAP_ARRAY(char, jarpath); | |
509 } | |
510 } | |
511 FREE_C_HEAP_ARRAY(char, dbuf); | |
512 os::closedir(dir); | |
513 return path; | |
514 } | |
515 | |
516 // Parses a memory size specification string. | |
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517 static bool atomull(const char *s, julong* result) { |
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518 julong n = 0; |
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519 int args_read = sscanf(s, os::julong_format_specifier(), &n); |
0 | 520 if (args_read != 1) { |
521 return false; | |
522 } | |
523 while (*s != '\0' && isdigit(*s)) { | |
524 s++; | |
525 } | |
526 // 4705540: illegal if more characters are found after the first non-digit | |
527 if (strlen(s) > 1) { | |
528 return false; | |
529 } | |
530 switch (*s) { | |
531 case 'T': case 't': | |
532 *result = n * G * K; | |
489
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533 // Check for overflow. |
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534 if (*result/((julong)G * K) != n) return false; |
0 | 535 return true; |
536 case 'G': case 'g': | |
537 *result = n * G; | |
489
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538 if (*result/G != n) return false; |
0 | 539 return true; |
540 case 'M': case 'm': | |
541 *result = n * M; | |
489
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542 if (*result/M != n) return false; |
0 | 543 return true; |
544 case 'K': case 'k': | |
545 *result = n * K; | |
489
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546 if (*result/K != n) return false; |
0 | 547 return true; |
548 case '\0': | |
549 *result = n; | |
550 return true; | |
551 default: | |
552 return false; | |
553 } | |
554 } | |
555 | |
489
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556 Arguments::ArgsRange Arguments::check_memory_size(julong size, julong min_size) { |
0 | 557 if (size < min_size) return arg_too_small; |
558 // Check that size will fit in a size_t (only relevant on 32-bit) | |
489
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559 if (size > max_uintx) return arg_too_big; |
0 | 560 return arg_in_range; |
561 } | |
562 | |
563 // Describe an argument out of range error | |
564 void Arguments::describe_range_error(ArgsRange errcode) { | |
565 switch(errcode) { | |
566 case arg_too_big: | |
567 jio_fprintf(defaultStream::error_stream(), | |
568 "The specified size exceeds the maximum " | |
569 "representable size.\n"); | |
570 break; | |
571 case arg_too_small: | |
572 case arg_unreadable: | |
573 case arg_in_range: | |
574 // do nothing for now | |
575 break; | |
576 default: | |
577 ShouldNotReachHere(); | |
578 } | |
579 } | |
580 | |
581 static bool set_bool_flag(char* name, bool value, FlagValueOrigin origin) { | |
582 return CommandLineFlags::boolAtPut(name, &value, origin); | |
583 } | |
584 | |
585 static bool set_fp_numeric_flag(char* name, char* value, FlagValueOrigin origin) { | |
586 double v; | |
587 if (sscanf(value, "%lf", &v) != 1) { | |
588 return false; | |
589 } | |
590 | |
591 if (CommandLineFlags::doubleAtPut(name, &v, origin)) { | |
592 return true; | |
593 } | |
594 return false; | |
595 } | |
596 | |
597 static bool set_numeric_flag(char* name, char* value, FlagValueOrigin origin) { | |
489
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598 julong v; |
0 | 599 intx intx_v; |
600 bool is_neg = false; | |
489
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601 // Check the sign first since atomull() parses only unsigned values. |
0 | 602 if (*value == '-') { |
603 if (!CommandLineFlags::intxAt(name, &intx_v)) { | |
604 return false; | |
605 } | |
606 value++; | |
607 is_neg = true; | |
608 } | |
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609 if (!atomull(value, &v)) { |
0 | 610 return false; |
611 } | |
612 intx_v = (intx) v; | |
613 if (is_neg) { | |
614 intx_v = -intx_v; | |
615 } | |
616 if (CommandLineFlags::intxAtPut(name, &intx_v, origin)) { | |
617 return true; | |
618 } | |
619 uintx uintx_v = (uintx) v; | |
620 if (!is_neg && CommandLineFlags::uintxAtPut(name, &uintx_v, origin)) { | |
621 return true; | |
622 } | |
1064 | 623 uint64_t uint64_t_v = (uint64_t) v; |
624 if (!is_neg && CommandLineFlags::uint64_tAtPut(name, &uint64_t_v, origin)) { | |
625 return true; | |
626 } | |
0 | 627 return false; |
628 } | |
629 | |
630 static bool set_string_flag(char* name, const char* value, FlagValueOrigin origin) { | |
631 if (!CommandLineFlags::ccstrAtPut(name, &value, origin)) return false; | |
632 // Contract: CommandLineFlags always returns a pointer that needs freeing. | |
633 FREE_C_HEAP_ARRAY(char, value); | |
634 return true; | |
635 } | |
636 | |
637 static bool append_to_string_flag(char* name, const char* new_value, FlagValueOrigin origin) { | |
638 const char* old_value = ""; | |
639 if (!CommandLineFlags::ccstrAt(name, &old_value)) return false; | |
640 size_t old_len = old_value != NULL ? strlen(old_value) : 0; | |
641 size_t new_len = strlen(new_value); | |
642 const char* value; | |
643 char* free_this_too = NULL; | |
644 if (old_len == 0) { | |
645 value = new_value; | |
646 } else if (new_len == 0) { | |
647 value = old_value; | |
648 } else { | |
649 char* buf = NEW_C_HEAP_ARRAY(char, old_len + 1 + new_len + 1); | |
650 // each new setting adds another LINE to the switch: | |
651 sprintf(buf, "%s\n%s", old_value, new_value); | |
652 value = buf; | |
653 free_this_too = buf; | |
654 } | |
655 (void) CommandLineFlags::ccstrAtPut(name, &value, origin); | |
656 // CommandLineFlags always returns a pointer that needs freeing. | |
657 FREE_C_HEAP_ARRAY(char, value); | |
658 if (free_this_too != NULL) { | |
659 // CommandLineFlags made its own copy, so I must delete my own temp. buffer. | |
660 FREE_C_HEAP_ARRAY(char, free_this_too); | |
661 } | |
662 return true; | |
663 } | |
664 | |
665 bool Arguments::parse_argument(const char* arg, FlagValueOrigin origin) { | |
666 | |
667 // range of acceptable characters spelled out for portability reasons | |
668 #define NAME_RANGE "[abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789_]" | |
669 #define BUFLEN 255 | |
670 char name[BUFLEN+1]; | |
671 char dummy; | |
672 | |
673 if (sscanf(arg, "-%" XSTR(BUFLEN) NAME_RANGE "%c", name, &dummy) == 1) { | |
674 return set_bool_flag(name, false, origin); | |
675 } | |
676 if (sscanf(arg, "+%" XSTR(BUFLEN) NAME_RANGE "%c", name, &dummy) == 1) { | |
677 return set_bool_flag(name, true, origin); | |
678 } | |
679 | |
680 char punct; | |
681 if (sscanf(arg, "%" XSTR(BUFLEN) NAME_RANGE "%c", name, &punct) == 2 && punct == '=') { | |
682 const char* value = strchr(arg, '=') + 1; | |
683 Flag* flag = Flag::find_flag(name, strlen(name)); | |
684 if (flag != NULL && flag->is_ccstr()) { | |
685 if (flag->ccstr_accumulates()) { | |
686 return append_to_string_flag(name, value, origin); | |
687 } else { | |
688 if (value[0] == '\0') { | |
689 value = NULL; | |
690 } | |
691 return set_string_flag(name, value, origin); | |
692 } | |
693 } | |
694 } | |
695 | |
696 if (sscanf(arg, "%" XSTR(BUFLEN) NAME_RANGE ":%c", name, &punct) == 2 && punct == '=') { | |
697 const char* value = strchr(arg, '=') + 1; | |
698 // -XX:Foo:=xxx will reset the string flag to the given value. | |
699 if (value[0] == '\0') { | |
700 value = NULL; | |
701 } | |
702 return set_string_flag(name, value, origin); | |
703 } | |
704 | |
705 #define SIGNED_FP_NUMBER_RANGE "[-0123456789.]" | |
706 #define SIGNED_NUMBER_RANGE "[-0123456789]" | |
707 #define NUMBER_RANGE "[0123456789]" | |
708 char value[BUFLEN + 1]; | |
709 char value2[BUFLEN + 1]; | |
710 if (sscanf(arg, "%" XSTR(BUFLEN) NAME_RANGE "=" "%" XSTR(BUFLEN) SIGNED_NUMBER_RANGE "." "%" XSTR(BUFLEN) NUMBER_RANGE "%c", name, value, value2, &dummy) == 3) { | |
711 // Looks like a floating-point number -- try again with more lenient format string | |
712 if (sscanf(arg, "%" XSTR(BUFLEN) NAME_RANGE "=" "%" XSTR(BUFLEN) SIGNED_FP_NUMBER_RANGE "%c", name, value, &dummy) == 2) { | |
713 return set_fp_numeric_flag(name, value, origin); | |
714 } | |
715 } | |
716 | |
717 #define VALUE_RANGE "[-kmgtKMGT0123456789]" | |
718 if (sscanf(arg, "%" XSTR(BUFLEN) NAME_RANGE "=" "%" XSTR(BUFLEN) VALUE_RANGE "%c", name, value, &dummy) == 2) { | |
719 return set_numeric_flag(name, value, origin); | |
720 } | |
721 | |
722 return false; | |
723 } | |
724 | |
725 void Arguments::add_string(char*** bldarray, int* count, const char* arg) { | |
726 assert(bldarray != NULL, "illegal argument"); | |
727 | |
728 if (arg == NULL) { | |
729 return; | |
730 } | |
731 | |
732 int index = *count; | |
733 | |
734 // expand the array and add arg to the last element | |
735 (*count)++; | |
736 if (*bldarray == NULL) { | |
737 *bldarray = NEW_C_HEAP_ARRAY(char*, *count); | |
738 } else { | |
739 *bldarray = REALLOC_C_HEAP_ARRAY(char*, *bldarray, *count); | |
740 } | |
741 (*bldarray)[index] = strdup(arg); | |
742 } | |
743 | |
744 void Arguments::build_jvm_args(const char* arg) { | |
745 add_string(&_jvm_args_array, &_num_jvm_args, arg); | |
746 } | |
747 | |
748 void Arguments::build_jvm_flags(const char* arg) { | |
749 add_string(&_jvm_flags_array, &_num_jvm_flags, arg); | |
750 } | |
751 | |
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752 void Arguments::add_c1x_arg(const char* arg) { |
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753 add_string(&_c1x_args_array, &_num_c1x_args, arg); |
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754 } |
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755 |
0 | 756 // utility function to return a string that concatenates all |
757 // strings in a given char** array | |
758 const char* Arguments::build_resource_string(char** args, int count) { | |
759 if (args == NULL || count == 0) { | |
760 return NULL; | |
761 } | |
762 size_t length = strlen(args[0]) + 1; // add 1 for the null terminator | |
763 for (int i = 1; i < count; i++) { | |
764 length += strlen(args[i]) + 1; // add 1 for a space | |
765 } | |
766 char* s = NEW_RESOURCE_ARRAY(char, length); | |
767 strcpy(s, args[0]); | |
768 for (int j = 1; j < count; j++) { | |
769 strcat(s, " "); | |
770 strcat(s, args[j]); | |
771 } | |
772 return (const char*) s; | |
773 } | |
774 | |
775 void Arguments::print_on(outputStream* st) { | |
776 st->print_cr("VM Arguments:"); | |
777 if (num_jvm_flags() > 0) { | |
778 st->print("jvm_flags: "); print_jvm_flags_on(st); | |
779 } | |
780 if (num_jvm_args() > 0) { | |
781 st->print("jvm_args: "); print_jvm_args_on(st); | |
782 } | |
783 st->print_cr("java_command: %s", java_command() ? java_command() : "<unknown>"); | |
784 st->print_cr("Launcher Type: %s", _sun_java_launcher); | |
785 } | |
786 | |
787 void Arguments::print_jvm_flags_on(outputStream* st) { | |
788 if (_num_jvm_flags > 0) { | |
789 for (int i=0; i < _num_jvm_flags; i++) { | |
790 st->print("%s ", _jvm_flags_array[i]); | |
791 } | |
792 st->print_cr(""); | |
793 } | |
794 } | |
795 | |
796 void Arguments::print_jvm_args_on(outputStream* st) { | |
797 if (_num_jvm_args > 0) { | |
798 for (int i=0; i < _num_jvm_args; i++) { | |
799 st->print("%s ", _jvm_args_array[i]); | |
800 } | |
801 st->print_cr(""); | |
802 } | |
803 } | |
804 | |
242 | 805 bool Arguments::process_argument(const char* arg, |
806 jboolean ignore_unrecognized, FlagValueOrigin origin) { | |
807 | |
808 JDK_Version since = JDK_Version(); | |
0 | 809 |
810 if (parse_argument(arg, origin)) { | |
811 // do nothing | |
242 | 812 } else if (is_newly_obsolete(arg, &since)) { |
813 enum { bufsize = 256 }; | |
814 char buffer[bufsize]; | |
815 since.to_string(buffer, bufsize); | |
0 | 816 jio_fprintf(defaultStream::error_stream(), |
242 | 817 "Warning: The flag %s has been EOL'd as of %s and will" |
818 " be ignored\n", arg, buffer); | |
0 | 819 } else { |
820 if (!ignore_unrecognized) { | |
821 jio_fprintf(defaultStream::error_stream(), | |
822 "Unrecognized VM option '%s'\n", arg); | |
823 // allow for commandline "commenting out" options like -XX:#+Verbose | |
824 if (strlen(arg) == 0 || arg[0] != '#') { | |
825 return false; | |
826 } | |
827 } | |
828 } | |
829 return true; | |
830 } | |
831 | |
832 bool Arguments::process_settings_file(const char* file_name, bool should_exist, jboolean ignore_unrecognized) { | |
833 FILE* stream = fopen(file_name, "rb"); | |
834 if (stream == NULL) { | |
835 if (should_exist) { | |
836 jio_fprintf(defaultStream::error_stream(), | |
837 "Could not open settings file %s\n", file_name); | |
838 return false; | |
839 } else { | |
840 return true; | |
841 } | |
842 } | |
843 | |
844 char token[1024]; | |
845 int pos = 0; | |
846 | |
847 bool in_white_space = true; | |
848 bool in_comment = false; | |
849 bool in_quote = false; | |
850 char quote_c = 0; | |
851 bool result = true; | |
852 | |
853 int c = getc(stream); | |
854 while(c != EOF) { | |
855 if (in_white_space) { | |
856 if (in_comment) { | |
857 if (c == '\n') in_comment = false; | |
858 } else { | |
859 if (c == '#') in_comment = true; | |
860 else if (!isspace(c)) { | |
861 in_white_space = false; | |
862 token[pos++] = c; | |
863 } | |
864 } | |
865 } else { | |
866 if (c == '\n' || (!in_quote && isspace(c))) { | |
867 // token ends at newline, or at unquoted whitespace | |
868 // this allows a way to include spaces in string-valued options | |
869 token[pos] = '\0'; | |
870 logOption(token); | |
871 result &= process_argument(token, ignore_unrecognized, CONFIG_FILE); | |
872 build_jvm_flags(token); | |
873 pos = 0; | |
874 in_white_space = true; | |
875 in_quote = false; | |
876 } else if (!in_quote && (c == '\'' || c == '"')) { | |
877 in_quote = true; | |
878 quote_c = c; | |
879 } else if (in_quote && (c == quote_c)) { | |
880 in_quote = false; | |
881 } else { | |
882 token[pos++] = c; | |
883 } | |
884 } | |
885 c = getc(stream); | |
886 } | |
887 if (pos > 0) { | |
888 token[pos] = '\0'; | |
889 result &= process_argument(token, ignore_unrecognized, CONFIG_FILE); | |
890 build_jvm_flags(token); | |
891 } | |
892 fclose(stream); | |
893 return result; | |
894 } | |
895 | |
896 //============================================================================================================= | |
897 // Parsing of properties (-D) | |
898 | |
899 const char* Arguments::get_property(const char* key) { | |
900 return PropertyList_get_value(system_properties(), key); | |
901 } | |
902 | |
903 bool Arguments::add_property(const char* prop) { | |
904 const char* eq = strchr(prop, '='); | |
905 char* key; | |
906 // ns must be static--its address may be stored in a SystemProperty object. | |
907 const static char ns[1] = {0}; | |
908 char* value = (char *)ns; | |
909 | |
910 size_t key_len = (eq == NULL) ? strlen(prop) : (eq - prop); | |
911 key = AllocateHeap(key_len + 1, "add_property"); | |
912 strncpy(key, prop, key_len); | |
913 key[key_len] = '\0'; | |
914 | |
915 if (eq != NULL) { | |
916 size_t value_len = strlen(prop) - key_len - 1; | |
917 value = AllocateHeap(value_len + 1, "add_property"); | |
918 strncpy(value, &prop[key_len + 1], value_len + 1); | |
919 } | |
920 | |
921 if (strcmp(key, "java.compiler") == 0) { | |
922 process_java_compiler_argument(value); | |
923 FreeHeap(key); | |
924 if (eq != NULL) { | |
925 FreeHeap(value); | |
926 } | |
927 return true; | |
691 | 928 } else if (strcmp(key, "sun.java.command") == 0) { |
0 | 929 _java_command = value; |
930 | |
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931 // Record value in Arguments, but let it get passed to Java. |
691 | 932 } else if (strcmp(key, "sun.java.launcher.pid") == 0) { |
0 | 933 // launcher.pid property is private and is processed |
934 // in process_sun_java_launcher_properties(); | |
935 // the sun.java.launcher property is passed on to the java application | |
936 FreeHeap(key); | |
937 if (eq != NULL) { | |
938 FreeHeap(value); | |
939 } | |
940 return true; | |
691 | 941 } else if (strcmp(key, "java.vendor.url.bug") == 0) { |
0 | 942 // save it in _java_vendor_url_bug, so JVM fatal error handler can access |
943 // its value without going through the property list or making a Java call. | |
944 _java_vendor_url_bug = value; | |
691 | 945 } else if (strcmp(key, "sun.boot.library.path") == 0) { |
946 PropertyList_unique_add(&_system_properties, key, value, true); | |
947 return true; | |
0 | 948 } |
949 // Create new property and add at the end of the list | |
950 PropertyList_unique_add(&_system_properties, key, value); | |
951 return true; | |
952 } | |
953 | |
954 //=========================================================================================================== | |
955 // Setting int/mixed/comp mode flags | |
956 | |
957 void Arguments::set_mode_flags(Mode mode) { | |
958 // Set up default values for all flags. | |
959 // If you add a flag to any of the branches below, | |
960 // add a default value for it here. | |
961 set_java_compiler(false); | |
962 _mode = mode; | |
963 | |
964 // Ensure Agent_OnLoad has the correct initial values. | |
965 // This may not be the final mode; mode may change later in onload phase. | |
966 PropertyList_unique_add(&_system_properties, "java.vm.info", | |
691 | 967 (char*)Abstract_VM_Version::vm_info_string(), false); |
0 | 968 |
969 UseInterpreter = true; | |
970 UseCompiler = true; | |
971 UseLoopCounter = true; | |
972 | |
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973 #ifndef ZERO |
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974 // Turn these off for mixed and comp. Leave them on for Zero. |
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975 if (FLAG_IS_DEFAULT(UseFastAccessorMethods)) { |
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976 UseFastAccessorMethods = mode == _int; |
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977 } |
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978 if (FLAG_IS_DEFAULT(UseFastEmptyMethods)) { |
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979 UseFastEmptyMethods = mode == _int; |
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980 } |
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981 #endif |
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982 |
0 | 983 // Default values may be platform/compiler dependent - |
984 // use the saved values | |
985 ClipInlining = Arguments::_ClipInlining; | |
986 AlwaysCompileLoopMethods = Arguments::_AlwaysCompileLoopMethods; | |
987 UseOnStackReplacement = Arguments::_UseOnStackReplacement; | |
988 BackgroundCompilation = Arguments::_BackgroundCompilation; | |
989 | |
990 // Change from defaults based on mode | |
991 switch (mode) { | |
992 default: | |
993 ShouldNotReachHere(); | |
994 break; | |
995 case _int: | |
996 UseCompiler = false; | |
997 UseLoopCounter = false; | |
998 AlwaysCompileLoopMethods = false; | |
999 UseOnStackReplacement = false; | |
1000 break; | |
1001 case _mixed: | |
1002 // same as default | |
1003 break; | |
1004 case _comp: | |
1005 UseInterpreter = false; | |
1006 BackgroundCompilation = false; | |
1007 ClipInlining = false; | |
1008 break; | |
1009 } | |
1010 } | |
1011 | |
1012 // Conflict: required to use shared spaces (-Xshare:on), but | |
1013 // incompatible command line options were chosen. | |
1014 | |
1015 static void no_shared_spaces() { | |
1016 if (RequireSharedSpaces) { | |
1017 jio_fprintf(defaultStream::error_stream(), | |
1018 "Class data sharing is inconsistent with other specified options.\n"); | |
1019 vm_exit_during_initialization("Unable to use shared archive.", NULL); | |
1020 } else { | |
1021 FLAG_SET_DEFAULT(UseSharedSpaces, false); | |
1022 } | |
1023 } | |
1024 | |
1783 | 1025 void Arguments::set_tiered_flags() { |
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1026 // With tiered, set default policy to AdvancedThresholdPolicy, which is 3. |
1783 | 1027 if (FLAG_IS_DEFAULT(CompilationPolicyChoice)) { |
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1028 FLAG_SET_DEFAULT(CompilationPolicyChoice, 3); |
1783 | 1029 } |
1030 if (CompilationPolicyChoice < 2) { | |
1031 vm_exit_during_initialization( | |
1032 "Incompatible compilation policy selected", NULL); | |
1033 } | |
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1034 // Increase the code cache size - tiered compiles a lot more. |
1783 | 1035 if (FLAG_IS_DEFAULT(ReservedCodeCacheSize)) { |
1036 FLAG_SET_DEFAULT(ReservedCodeCacheSize, ReservedCodeCacheSize * 2); | |
1037 } | |
1038 } | |
1039 | |
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1040 #ifndef KERNEL |
0 | 1041 // If the user has chosen ParallelGCThreads > 0, we set UseParNewGC |
1042 // if it's not explictly set or unset. If the user has chosen | |
1043 // UseParNewGC and not explicitly set ParallelGCThreads we | |
1044 // set it, unless this is a single cpu machine. | |
1045 void Arguments::set_parnew_gc_flags() { | |
1064 | 1046 assert(!UseSerialGC && !UseParallelOldGC && !UseParallelGC && !UseG1GC, |
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1047 "control point invariant"); |
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1048 assert(UseParNewGC, "Error"); |
0 | 1049 |
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1050 // Turn off AdaptiveSizePolicy by default for parnew until it is |
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1051 // complete. |
342
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1052 if (FLAG_IS_DEFAULT(UseAdaptiveSizePolicy)) { |
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1053 FLAG_SET_DEFAULT(UseAdaptiveSizePolicy, false); |
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1054 } |
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1055 |
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1056 if (ParallelGCThreads == 0) { |
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1057 FLAG_SET_DEFAULT(ParallelGCThreads, |
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1058 Abstract_VM_Version::parallel_worker_threads()); |
1064 | 1059 if (ParallelGCThreads == 1) { |
0 | 1060 FLAG_SET_DEFAULT(UseParNewGC, false); |
1064 | 1061 FLAG_SET_DEFAULT(ParallelGCThreads, 0); |
0 | 1062 } |
1063 } | |
1064 | 1064 if (UseParNewGC) { |
1065 // CDS doesn't work with ParNew yet | |
0 | 1066 no_shared_spaces(); |
1067 | |
695 | 1068 // By default YoungPLABSize and OldPLABSize are set to 4096 and 1024 respectively, |
0 | 1069 // these settings are default for Parallel Scavenger. For ParNew+Tenured configuration |
1070 // we set them to 1024 and 1024. | |
1071 // See CR 6362902. | |
1072 if (FLAG_IS_DEFAULT(YoungPLABSize)) { | |
1073 FLAG_SET_DEFAULT(YoungPLABSize, (intx)1024); | |
1074 } | |
1075 if (FLAG_IS_DEFAULT(OldPLABSize)) { | |
1076 FLAG_SET_DEFAULT(OldPLABSize, (intx)1024); | |
1077 } | |
1078 | |
1064 | 1079 // AlwaysTenure flag should make ParNew promote all at first collection. |
0 | 1080 // See CR 6362902. |
1081 if (AlwaysTenure) { | |
1082 FLAG_SET_CMDLINE(intx, MaxTenuringThreshold, 0); | |
1083 } | |
695 | 1084 // When using compressed oops, we use local overflow stacks, |
1085 // rather than using a global overflow list chained through | |
1086 // the klass word of the object's pre-image. | |
1087 if (UseCompressedOops && !ParGCUseLocalOverflow) { | |
1088 if (!FLAG_IS_DEFAULT(ParGCUseLocalOverflow)) { | |
1089 warning("Forcing +ParGCUseLocalOverflow: needed if using compressed references"); | |
1090 } | |
1091 FLAG_SET_DEFAULT(ParGCUseLocalOverflow, true); | |
1092 } | |
1093 assert(ParGCUseLocalOverflow || !UseCompressedOops, "Error"); | |
0 | 1094 } |
1095 } | |
1096 | |
1097 // Adjust some sizes to suit CMS and/or ParNew needs; these work well on | |
1098 // sparc/solaris for certain applications, but would gain from | |
1099 // further optimization and tuning efforts, and would almost | |
1100 // certainly gain from analysis of platform and environment. | |
1101 void Arguments::set_cms_and_parnew_gc_flags() { | |
1064 | 1102 assert(!UseSerialGC && !UseParallelOldGC && !UseParallelGC, "Error"); |
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1103 assert(UseConcMarkSweepGC, "CMS is expected to be on here"); |
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1104 |
0 | 1105 // If we are using CMS, we prefer to UseParNewGC, |
1106 // unless explicitly forbidden. | |
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1107 if (FLAG_IS_DEFAULT(UseParNewGC)) { |
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1108 FLAG_SET_ERGO(bool, UseParNewGC, true); |
0 | 1109 } |
1110 | |
1111 // Turn off AdaptiveSizePolicy by default for cms until it is | |
10
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1112 // complete. |
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1113 if (FLAG_IS_DEFAULT(UseAdaptiveSizePolicy)) { |
0 | 1114 FLAG_SET_DEFAULT(UseAdaptiveSizePolicy, false); |
1115 } | |
1116 | |
1117 // In either case, adjust ParallelGCThreads and/or UseParNewGC | |
1118 // as needed. | |
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1119 if (UseParNewGC) { |
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1120 set_parnew_gc_flags(); |
0 | 1121 } |
1122 | |
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1123 // MaxHeapSize is aligned down in collectorPolicy |
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1124 size_t max_heap = align_size_down(MaxHeapSize, |
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1125 CardTableRS::ct_max_alignment_constraint()); |
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1126 |
0 | 1127 // Now make adjustments for CMS |
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1128 intx tenuring_default = (intx)6; |
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1129 size_t young_gen_per_worker = CMSYoungGenPerWorker; |
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1130 |
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1131 // Preferred young gen size for "short" pauses: |
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1132 // upper bound depends on # of threads and NewRatio. |
0 | 1133 const uintx parallel_gc_threads = |
1134 (ParallelGCThreads == 0 ? 1 : ParallelGCThreads); | |
1135 const size_t preferred_max_new_size_unaligned = | |
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1136 MIN2(max_heap/(NewRatio+1), ScaleForWordSize(young_gen_per_worker * parallel_gc_threads)); |
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1137 size_t preferred_max_new_size = |
0 | 1138 align_size_up(preferred_max_new_size_unaligned, os::vm_page_size()); |
1139 | |
1140 // Unless explicitly requested otherwise, size young gen | |
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1141 // for "short" pauses ~ CMSYoungGenPerWorker*ParallelGCThreads |
886
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1142 |
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1143 // If either MaxNewSize or NewRatio is set on the command line, |
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1144 // assume the user is trying to set the size of the young gen. |
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1145 if (FLAG_IS_DEFAULT(MaxNewSize) && FLAG_IS_DEFAULT(NewRatio)) { |
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1146 |
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1147 // Set MaxNewSize to our calculated preferred_max_new_size unless |
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1148 // NewSize was set on the command line and it is larger than |
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1149 // preferred_max_new_size. |
0 | 1150 if (!FLAG_IS_DEFAULT(NewSize)) { // NewSize explicitly set at command-line |
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1151 FLAG_SET_ERGO(uintx, MaxNewSize, MAX2(NewSize, preferred_max_new_size)); |
0 | 1152 } else { |
13
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1153 FLAG_SET_ERGO(uintx, MaxNewSize, preferred_max_new_size); |
0 | 1154 } |
1064 | 1155 if (PrintGCDetails && Verbose) { |
13
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1156 // Too early to use gclog_or_tty |
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1157 tty->print_cr("CMS ergo set MaxNewSize: " SIZE_FORMAT, MaxNewSize); |
886
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1158 } |
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1159 |
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1160 // Code along this path potentially sets NewSize and OldSize |
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1161 |
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1162 assert(max_heap >= InitialHeapSize, "Error"); |
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1163 assert(max_heap >= NewSize, "Error"); |
0 | 1164 |
1064 | 1165 if (PrintGCDetails && Verbose) { |
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1166 // Too early to use gclog_or_tty |
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1167 tty->print_cr("CMS set min_heap_size: " SIZE_FORMAT |
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1168 " initial_heap_size: " SIZE_FORMAT |
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1169 " max_heap: " SIZE_FORMAT, |
1064 | 1170 min_heap_size(), InitialHeapSize, max_heap); |
13
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1171 } |
2368
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1172 size_t min_new = preferred_max_new_size; |
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1173 if (FLAG_IS_CMDLINE(NewSize)) { |
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1174 min_new = NewSize; |
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1175 } |
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1176 if (max_heap > min_new && min_heap_size() > min_new) { |
0 | 1177 // Unless explicitly requested otherwise, make young gen |
1178 // at least min_new, and at most preferred_max_new_size. | |
1179 if (FLAG_IS_DEFAULT(NewSize)) { | |
13
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1180 FLAG_SET_ERGO(uintx, NewSize, MAX2(NewSize, min_new)); |
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1181 FLAG_SET_ERGO(uintx, NewSize, MIN2(preferred_max_new_size, NewSize)); |
1064 | 1182 if (PrintGCDetails && Verbose) { |
13
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1183 // Too early to use gclog_or_tty |
2368
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1184 tty->print_cr("CMS ergo set NewSize: " SIZE_FORMAT, NewSize); |
13
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1185 } |
0 | 1186 } |
1187 // Unless explicitly requested otherwise, size old gen | |
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1188 // so it's NewRatio x of NewSize. |
0 | 1189 if (FLAG_IS_DEFAULT(OldSize)) { |
1190 if (max_heap > NewSize) { | |
2368
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1191 FLAG_SET_ERGO(uintx, OldSize, MIN2(NewRatio*NewSize, max_heap - NewSize)); |
1064 | 1192 if (PrintGCDetails && Verbose) { |
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1193 // Too early to use gclog_or_tty |
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1194 tty->print_cr("CMS ergo set OldSize: " SIZE_FORMAT, OldSize); |
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1195 } |
0 | 1196 } |
1197 } | |
1198 } | |
1199 } | |
1200 // Unless explicitly requested otherwise, definitely | |
1201 // promote all objects surviving "tenuring_default" scavenges. | |
1202 if (FLAG_IS_DEFAULT(MaxTenuringThreshold) && | |
1203 FLAG_IS_DEFAULT(SurvivorRatio)) { | |
13
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1204 FLAG_SET_ERGO(intx, MaxTenuringThreshold, tenuring_default); |
0 | 1205 } |
1206 // If we decided above (or user explicitly requested) | |
1207 // `promote all' (via MaxTenuringThreshold := 0), | |
1208 // prefer minuscule survivor spaces so as not to waste | |
1209 // space for (non-existent) survivors | |
1210 if (FLAG_IS_DEFAULT(SurvivorRatio) && MaxTenuringThreshold == 0) { | |
13
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1211 FLAG_SET_ERGO(intx, SurvivorRatio, MAX2((intx)1024, SurvivorRatio)); |
0 | 1212 } |
1213 // If OldPLABSize is set and CMSParPromoteBlocksToClaim is not, | |
1214 // set CMSParPromoteBlocksToClaim equal to OldPLABSize. | |
1215 // This is done in order to make ParNew+CMS configuration to work | |
1216 // with YoungPLABSize and OldPLABSize options. | |
1217 // See CR 6362902. | |
1218 if (!FLAG_IS_DEFAULT(OldPLABSize)) { | |
1219 if (FLAG_IS_DEFAULT(CMSParPromoteBlocksToClaim)) { | |
13
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1220 // OldPLABSize is not the default value but CMSParPromoteBlocksToClaim |
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1221 // is. In this situtation let CMSParPromoteBlocksToClaim follow |
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1222 // the value (either from the command line or ergonomics) of |
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1223 // OldPLABSize. Following OldPLABSize is an ergonomics decision. |
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1224 FLAG_SET_ERGO(uintx, CMSParPromoteBlocksToClaim, OldPLABSize); |
1145
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1225 } else { |
0 | 1226 // OldPLABSize and CMSParPromoteBlocksToClaim are both set. |
1227 // CMSParPromoteBlocksToClaim is a collector-specific flag, so | |
1228 // we'll let it to take precedence. | |
1229 jio_fprintf(defaultStream::error_stream(), | |
886
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1230 "Both OldPLABSize and CMSParPromoteBlocksToClaim" |
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1231 " options are specified for the CMS collector." |
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1232 " CMSParPromoteBlocksToClaim will take precedence.\n"); |
0 | 1233 } |
1234 } | |
1145
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1235 if (!FLAG_IS_DEFAULT(ResizeOldPLAB) && !ResizeOldPLAB) { |
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1236 // OldPLAB sizing manually turned off: Use a larger default setting, |
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1237 // unless it was manually specified. This is because a too-low value |
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1238 // will slow down scavenges. |
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1239 if (FLAG_IS_DEFAULT(CMSParPromoteBlocksToClaim)) { |
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1240 FLAG_SET_ERGO(uintx, CMSParPromoteBlocksToClaim, 50); // default value before 6631166 |
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1241 } |
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1242 } |
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1243 // Overwrite OldPLABSize which is the variable we will internally use everywhere. |
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1244 FLAG_SET_ERGO(uintx, OldPLABSize, CMSParPromoteBlocksToClaim); |
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1245 // If either of the static initialization defaults have changed, note this |
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1246 // modification. |
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1247 if (!FLAG_IS_DEFAULT(CMSParPromoteBlocksToClaim) || !FLAG_IS_DEFAULT(OldPLABWeight)) { |
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1248 CFLS_LAB::modify_initialization(OldPLABSize, OldPLABWeight); |
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1249 } |
1284 | 1250 if (PrintGCDetails && Verbose) { |
1251 tty->print_cr("MarkStackSize: %uk MarkStackSizeMax: %uk", | |
1252 MarkStackSize / K, MarkStackSizeMax / K); | |
1253 tty->print_cr("ConcGCThreads: %u", ConcGCThreads); | |
1254 } | |
0 | 1255 } |
1145
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1256 #endif // KERNEL |
0 | 1257 |
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1258 void set_object_alignment() { |
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1259 // Object alignment. |
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1260 assert(is_power_of_2(ObjectAlignmentInBytes), "ObjectAlignmentInBytes must be power of 2"); |
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1261 MinObjAlignmentInBytes = ObjectAlignmentInBytes; |
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1262 assert(MinObjAlignmentInBytes >= HeapWordsPerLong * HeapWordSize, "ObjectAlignmentInBytes value is too small"); |
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1263 MinObjAlignment = MinObjAlignmentInBytes / HeapWordSize; |
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1264 assert(MinObjAlignmentInBytes == MinObjAlignment * HeapWordSize, "ObjectAlignmentInBytes value is incorrect"); |
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1265 MinObjAlignmentInBytesMask = MinObjAlignmentInBytes - 1; |
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1266 |
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1267 LogMinObjAlignmentInBytes = exact_log2(ObjectAlignmentInBytes); |
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1268 LogMinObjAlignment = LogMinObjAlignmentInBytes - LogHeapWordSize; |
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1269 |
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1270 // Oop encoding heap max |
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1271 OopEncodingHeapMax = (uint64_t(max_juint) + 1) << LogMinObjAlignmentInBytes; |
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1272 |
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1273 #ifndef KERNEL |
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1274 // Set CMS global values |
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1275 CompactibleFreeListSpace::set_cms_values(); |
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1276 #endif // KERNEL |
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1277 } |
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1278 |
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1279 bool verify_object_alignment() { |
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1280 // Object alignment. |
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1281 if (!is_power_of_2(ObjectAlignmentInBytes)) { |
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1282 jio_fprintf(defaultStream::error_stream(), |
1829
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1283 "error: ObjectAlignmentInBytes=%d must be power of 2\n", |
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1284 (int)ObjectAlignmentInBytes); |
1571
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1285 return false; |
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1286 } |
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1287 if ((int)ObjectAlignmentInBytes < BytesPerLong) { |
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1288 jio_fprintf(defaultStream::error_stream(), |
1829
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1289 "error: ObjectAlignmentInBytes=%d must be greater or equal %d\n", |
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1290 (int)ObjectAlignmentInBytes, BytesPerLong); |
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1291 return false; |
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1292 } |
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1293 // It does not make sense to have big object alignment |
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1294 // since a space lost due to alignment will be greater |
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1295 // then a saved space from compressed oops. |
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1296 if ((int)ObjectAlignmentInBytes > 256) { |
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1297 jio_fprintf(defaultStream::error_stream(), |
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1298 "error: ObjectAlignmentInBytes=%d must not be greater then 256\n", |
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1299 (int)ObjectAlignmentInBytes); |
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1300 return false; |
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1301 } |
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1302 // In case page size is very small. |
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1303 if ((int)ObjectAlignmentInBytes >= os::vm_page_size()) { |
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1304 jio_fprintf(defaultStream::error_stream(), |
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1305 "error: ObjectAlignmentInBytes=%d must be less then page size %d\n", |
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1306 (int)ObjectAlignmentInBytes, os::vm_page_size()); |
1571
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1307 return false; |
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1308 } |
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1309 return true; |
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1310 } |
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1311 |
135
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1312 inline uintx max_heap_for_compressed_oops() { |
1963 | 1313 // Avoid sign flip. |
1314 if (OopEncodingHeapMax < MaxPermSize + os::vm_page_size()) { | |
1315 return 0; | |
1316 } | |
1317 LP64_ONLY(return OopEncodingHeapMax - MaxPermSize - os::vm_page_size()); | |
1064 | 1318 NOT_LP64(ShouldNotReachHere(); return 0); |
135
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1319 } |
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1320 |
0 | 1321 bool Arguments::should_auto_select_low_pause_collector() { |
1322 if (UseAutoGCSelectPolicy && | |
1323 !FLAG_IS_DEFAULT(MaxGCPauseMillis) && | |
1324 (MaxGCPauseMillis <= AutoGCSelectPauseMillis)) { | |
1325 if (PrintGCDetails) { | |
1326 // Cannot use gclog_or_tty yet. | |
1327 tty->print_cr("Automatic selection of the low pause collector" | |
1328 " based on pause goal of %d (ms)", MaxGCPauseMillis); | |
1329 } | |
1330 return true; | |
1331 } | |
1332 return false; | |
1333 } | |
1334 | |
1335 void Arguments::set_ergonomics_flags() { | |
1336 // Parallel GC is not compatible with sharing. If one specifies | |
1064 | 1337 // that they want sharing explicitly, do not set ergonomics flags. |
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1338 if (DumpSharedSpaces || RequireSharedSpaces) { |
0 | 1339 return; |
1340 } | |
1341 | |
1342 if (os::is_server_class_machine() && !force_client_mode ) { | |
1343 // If no other collector is requested explicitly, | |
1344 // let the VM select the collector based on | |
1345 // machine class and automatic selection policy. | |
1346 if (!UseSerialGC && | |
1347 !UseConcMarkSweepGC && | |
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1348 !UseG1GC && |
0 | 1349 !UseParNewGC && |
1350 !DumpSharedSpaces && | |
1351 FLAG_IS_DEFAULT(UseParallelGC)) { | |
1352 if (should_auto_select_low_pause_collector()) { | |
1353 FLAG_SET_ERGO(bool, UseConcMarkSweepGC, true); | |
1354 } else { | |
1355 FLAG_SET_ERGO(bool, UseParallelGC, true); | |
1356 } | |
1357 no_shared_spaces(); | |
1358 } | |
1359 } | |
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1360 |
1010 | 1361 #ifndef ZERO |
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1362 #ifdef _LP64 |
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1363 // Check that UseCompressedOops can be set with the max heap size allocated |
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1364 // by ergonomics. |
187 | 1365 if (MaxHeapSize <= max_heap_for_compressed_oops()) { |
1783 | 1366 #if !defined(COMPILER1) || defined(TIERED) |
2228 | 1367 if (FLAG_IS_DEFAULT(UseCompressedOops)) { |
932 | 1368 FLAG_SET_ERGO(bool, UseCompressedOops, true); |
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1369 } |
1060 | 1370 #endif |
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1371 #ifdef _WIN64 |
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1372 if (UseLargePages && UseCompressedOops) { |
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1373 // Cannot allocate guard pages for implicit checks in indexed addressing |
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1374 // mode, when large pages are specified on windows. |
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1375 // This flag could be switched ON if narrow oop base address is set to 0, |
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1376 // see code in Universe::initialize_heap(). |
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1377 Universe::set_narrow_oop_use_implicit_null_checks(false); |
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1378 } |
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1379 #endif // _WIN64 |
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1380 } else { |
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1381 if (UseCompressedOops && !FLAG_IS_DEFAULT(UseCompressedOops)) { |
344 | 1382 warning("Max heap size too large for Compressed Oops"); |
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1383 FLAG_SET_DEFAULT(UseCompressedOops, false); |
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1384 } |
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1385 } |
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1386 // Also checks that certain machines are slower with compressed oops |
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1387 // in vm_version initialization code. |
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1388 #endif // _LP64 |
1010 | 1389 #endif // !ZERO |
0 | 1390 } |
1391 | |
1392 void Arguments::set_parallel_gc_flags() { | |
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1393 assert(UseParallelGC || UseParallelOldGC, "Error"); |
0 | 1394 // If parallel old was requested, automatically enable parallel scavenge. |
1395 if (UseParallelOldGC && !UseParallelGC && FLAG_IS_DEFAULT(UseParallelGC)) { | |
1396 FLAG_SET_DEFAULT(UseParallelGC, true); | |
1397 } | |
1398 | |
1399 // If no heap maximum was requested explicitly, use some reasonable fraction | |
1400 // of the physical memory, up to a maximum of 1GB. | |
1401 if (UseParallelGC) { | |
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1402 FLAG_SET_ERGO(uintx, ParallelGCThreads, |
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1403 Abstract_VM_Version::parallel_worker_threads()); |
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1404 |
0 | 1405 // If InitialSurvivorRatio or MinSurvivorRatio were not specified, but the |
1406 // SurvivorRatio has been set, reset their default values to SurvivorRatio + | |
1407 // 2. By doing this we make SurvivorRatio also work for Parallel Scavenger. | |
1408 // See CR 6362902 for details. | |
1409 if (!FLAG_IS_DEFAULT(SurvivorRatio)) { | |
1410 if (FLAG_IS_DEFAULT(InitialSurvivorRatio)) { | |
1411 FLAG_SET_DEFAULT(InitialSurvivorRatio, SurvivorRatio + 2); | |
1412 } | |
1413 if (FLAG_IS_DEFAULT(MinSurvivorRatio)) { | |
1414 FLAG_SET_DEFAULT(MinSurvivorRatio, SurvivorRatio + 2); | |
1415 } | |
1416 } | |
1417 | |
1418 if (UseParallelOldGC) { | |
1419 // Par compact uses lower default values since they are treated as | |
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1420 // minimums. These are different defaults because of the different |
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1421 // interpretation and are not ergonomically set. |
0 | 1422 if (FLAG_IS_DEFAULT(MarkSweepDeadRatio)) { |
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1423 FLAG_SET_DEFAULT(MarkSweepDeadRatio, 1); |
0 | 1424 } |
1425 if (FLAG_IS_DEFAULT(PermMarkSweepDeadRatio)) { | |
13
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1426 FLAG_SET_DEFAULT(PermMarkSweepDeadRatio, 5); |
0 | 1427 } |
1428 } | |
1429 } | |
1430 } | |
1431 | |
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1432 void Arguments::set_g1_gc_flags() { |
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1433 assert(UseG1GC, "Error"); |
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1434 #ifdef COMPILER1 |
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1435 FastTLABRefill = false; |
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1436 #endif |
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1437 FLAG_SET_DEFAULT(ParallelGCThreads, |
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1438 Abstract_VM_Version::parallel_worker_threads()); |
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1439 if (ParallelGCThreads == 0) { |
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1440 FLAG_SET_DEFAULT(ParallelGCThreads, |
751 | 1441 Abstract_VM_Version::parallel_worker_threads()); |
342
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1442 } |
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1443 no_shared_spaces(); |
751 | 1444 |
1284 | 1445 if (FLAG_IS_DEFAULT(MarkStackSize)) { |
1311
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1446 FLAG_SET_DEFAULT(MarkStackSize, 128 * TASKQUEUE_SIZE); |
1284 | 1447 } |
1448 if (PrintGCDetails && Verbose) { | |
1449 tty->print_cr("MarkStackSize: %uk MarkStackSizeMax: %uk", | |
1450 MarkStackSize / K, MarkStackSizeMax / K); | |
1451 tty->print_cr("ConcGCThreads: %u", ConcGCThreads); | |
1452 } | |
1356 | 1453 |
1454 if (FLAG_IS_DEFAULT(GCTimeRatio) || GCTimeRatio == 0) { | |
1455 // In G1, we want the default GC overhead goal to be higher than | |
1456 // say in PS. So we set it here to 10%. Otherwise the heap might | |
1457 // be expanded more aggressively than we would like it to. In | |
1458 // fact, even 10% seems to not be high enough in some cases | |
1459 // (especially small GC stress tests that the main thing they do | |
1460 // is allocation). We might consider increase it further. | |
1461 FLAG_SET_DEFAULT(GCTimeRatio, 9); | |
1462 } | |
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1463 } |
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1464 |
1064 | 1465 void Arguments::set_heap_size() { |
1466 if (!FLAG_IS_DEFAULT(DefaultMaxRAMFraction)) { | |
1467 // Deprecated flag | |
1468 FLAG_SET_CMDLINE(uintx, MaxRAMFraction, DefaultMaxRAMFraction); | |
1469 } | |
1470 | |
1471 const julong phys_mem = | |
1472 FLAG_IS_DEFAULT(MaxRAM) ? MIN2(os::physical_memory(), (julong)MaxRAM) | |
1473 : (julong)MaxRAM; | |
1474 | |
1475 // If the maximum heap size has not been set with -Xmx, | |
1476 // then set it as fraction of the size of physical memory, | |
1477 // respecting the maximum and minimum sizes of the heap. | |
342
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1478 if (FLAG_IS_DEFAULT(MaxHeapSize)) { |
1064 | 1479 julong reasonable_max = phys_mem / MaxRAMFraction; |
1480 | |
1481 if (phys_mem <= MaxHeapSize * MinRAMFraction) { | |
1482 // Small physical memory, so use a minimum fraction of it for the heap | |
1483 reasonable_max = phys_mem / MinRAMFraction; | |
1484 } else { | |
1485 // Not-small physical memory, so require a heap at least | |
1486 // as large as MaxHeapSize | |
1487 reasonable_max = MAX2(reasonable_max, (julong)MaxHeapSize); | |
1488 } | |
1489 if (!FLAG_IS_DEFAULT(ErgoHeapSizeLimit) && ErgoHeapSizeLimit != 0) { | |
1490 // Limit the heap size to ErgoHeapSizeLimit | |
1491 reasonable_max = MIN2(reasonable_max, (julong)ErgoHeapSizeLimit); | |
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1492 } |
1064 | 1493 if (UseCompressedOops) { |
1494 // Limit the heap size to the maximum possible when using compressed oops | |
1963 | 1495 julong max_coop_heap = (julong)max_heap_for_compressed_oops(); |
1496 if (HeapBaseMinAddress + MaxHeapSize < max_coop_heap) { | |
1497 // Heap should be above HeapBaseMinAddress to get zero based compressed oops | |
1498 // but it should be not less than default MaxHeapSize. | |
1499 max_coop_heap -= HeapBaseMinAddress; | |
1500 } | |
1501 reasonable_max = MIN2(reasonable_max, max_coop_heap); | |
1064 | 1502 } |
1503 reasonable_max = os::allocatable_physical_memory(reasonable_max); | |
1504 | |
1505 if (!FLAG_IS_DEFAULT(InitialHeapSize)) { | |
1506 // An initial heap size was specified on the command line, | |
1507 // so be sure that the maximum size is consistent. Done | |
1508 // after call to allocatable_physical_memory because that | |
1509 // method might reduce the allocation size. | |
1510 reasonable_max = MAX2(reasonable_max, (julong)InitialHeapSize); | |
1511 } | |
1512 | |
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1513 if (PrintGCDetails && Verbose) { |
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1514 // Cannot use gclog_or_tty yet. |
1064 | 1515 tty->print_cr(" Maximum heap size " SIZE_FORMAT, reasonable_max); |
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1516 } |
1064 | 1517 FLAG_SET_ERGO(uintx, MaxHeapSize, (uintx)reasonable_max); |
1518 } | |
1519 | |
1520 // If the initial_heap_size has not been set with InitialHeapSize | |
1521 // or -Xms, then set it as fraction of the size of physical memory, | |
1522 // respecting the maximum and minimum sizes of the heap. | |
1523 if (FLAG_IS_DEFAULT(InitialHeapSize)) { | |
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1524 julong reasonable_minimum = (julong)(OldSize + NewSize); |
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1525 |
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1526 reasonable_minimum = MIN2(reasonable_minimum, (julong)MaxHeapSize); |
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1527 |
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1528 reasonable_minimum = os::allocatable_physical_memory(reasonable_minimum); |
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1529 |
1064 | 1530 julong reasonable_initial = phys_mem / InitialRAMFraction; |
1531 | |
1074
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1532 reasonable_initial = MAX2(reasonable_initial, reasonable_minimum); |
1064 | 1533 reasonable_initial = MIN2(reasonable_initial, (julong)MaxHeapSize); |
1534 | |
1535 reasonable_initial = os::allocatable_physical_memory(reasonable_initial); | |
1536 | |
1537 if (PrintGCDetails && Verbose) { | |
1538 // Cannot use gclog_or_tty yet. | |
1539 tty->print_cr(" Initial heap size " SIZE_FORMAT, (uintx)reasonable_initial); | |
1074
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1540 tty->print_cr(" Minimum heap size " SIZE_FORMAT, (uintx)reasonable_minimum); |
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1541 } |
1064 | 1542 FLAG_SET_ERGO(uintx, InitialHeapSize, (uintx)reasonable_initial); |
1074
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1543 set_min_heap_size((uintx)reasonable_minimum); |
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1544 } |
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1545 } |
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1546 |
0 | 1547 // This must be called after ergonomics because we want bytecode rewriting |
1548 // if the server compiler is used, or if UseSharedSpaces is disabled. | |
1549 void Arguments::set_bytecode_flags() { | |
1550 // Better not attempt to store into a read-only space. | |
1551 if (UseSharedSpaces) { | |
1552 FLAG_SET_DEFAULT(RewriteBytecodes, false); | |
1553 FLAG_SET_DEFAULT(RewriteFrequentPairs, false); | |
1554 } | |
1555 | |
1556 if (!RewriteBytecodes) { | |
1557 FLAG_SET_DEFAULT(RewriteFrequentPairs, false); | |
1558 } | |
1559 } | |
1560 | |
1561 // Aggressive optimization flags -XX:+AggressiveOpts | |
1562 void Arguments::set_aggressive_opts_flags() { | |
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1563 #ifdef COMPILER2 |
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1564 if (AggressiveOpts || !FLAG_IS_DEFAULT(AutoBoxCacheMax)) { |
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1565 if (FLAG_IS_DEFAULT(EliminateAutoBox)) { |
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1566 FLAG_SET_DEFAULT(EliminateAutoBox, true); |
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1567 } |
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1568 if (FLAG_IS_DEFAULT(AutoBoxCacheMax)) { |
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1569 FLAG_SET_DEFAULT(AutoBoxCacheMax, 20000); |
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1570 } |
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1571 |
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1572 // Feed the cache size setting into the JDK |
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1573 char buffer[1024]; |
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1574 sprintf(buffer, "java.lang.Integer.IntegerCache.high=" INTX_FORMAT, AutoBoxCacheMax); |
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1575 add_property(buffer); |
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1576 } |
65 | 1577 if (AggressiveOpts && FLAG_IS_DEFAULT(DoEscapeAnalysis)) { |
1578 FLAG_SET_DEFAULT(DoEscapeAnalysis, true); | |
1579 } | |
416
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6649622: HotSpot Biased locking needs tuning on latest CPUs
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parents:
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|
1580 if (AggressiveOpts && FLAG_IS_DEFAULT(BiasedLockingStartupDelay)) { |
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6649622: HotSpot Biased locking needs tuning on latest CPUs
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|
1581 FLAG_SET_DEFAULT(BiasedLockingStartupDelay, 500); |
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6649622: HotSpot Biased locking needs tuning on latest CPUs
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|
1582 } |
1622 | 1583 if (AggressiveOpts && FLAG_IS_DEFAULT(OptimizeStringConcat)) { |
1584 FLAG_SET_DEFAULT(OptimizeStringConcat, true); | |
1585 } | |
1763 | 1586 if (AggressiveOpts && FLAG_IS_DEFAULT(OptimizeFill)) { |
1587 FLAG_SET_DEFAULT(OptimizeFill, true); | |
1588 } | |
17
ff5961f4c095
6395208: Elide autoboxing for calls to HashMap.get(int) and HashMap.get(long)
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diff
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|
1589 #endif |
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6395208: Elide autoboxing for calls to HashMap.get(int) and HashMap.get(long)
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|
1590 |
0 | 1591 if (AggressiveOpts) { |
61 | 1592 // Sample flag setting code |
1593 // if (FLAG_IS_DEFAULT(EliminateZeroing)) { | |
1594 // FLAG_SET_DEFAULT(EliminateZeroing, true); | |
1595 // } | |
0 | 1596 } |
1597 } | |
1598 | |
1599 //=========================================================================================================== | |
1600 // Parsing of java.compiler property | |
1601 | |
1602 void Arguments::process_java_compiler_argument(char* arg) { | |
1603 // For backwards compatibility, Djava.compiler=NONE or "" | |
1604 // causes us to switch to -Xint mode UNLESS -Xdebug | |
1605 // is also specified. | |
1606 if (strlen(arg) == 0 || strcasecmp(arg, "NONE") == 0) { | |
1607 set_java_compiler(true); // "-Djava.compiler[=...]" most recently seen. | |
1608 } | |
1609 } | |
1610 | |
1611 void Arguments::process_java_launcher_argument(const char* launcher, void* extra_info) { | |
1612 _sun_java_launcher = strdup(launcher); | |
2302
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diff
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|
1613 if (strcmp("gamma", _sun_java_launcher) == 0) { |
da091bb67459
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diff
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|
1614 _created_by_gamma_launcher = true; |
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|
1615 } |
0 | 1616 } |
1617 | |
1618 bool Arguments::created_by_java_launcher() { | |
1619 assert(_sun_java_launcher != NULL, "property must have value"); | |
1620 return strcmp(DEFAULT_JAVA_LAUNCHER, _sun_java_launcher) != 0; | |
1621 } | |
1622 | |
2302
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|
1623 bool Arguments::created_by_gamma_launcher() { |
da091bb67459
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|
1624 return _created_by_gamma_launcher; |
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diff
changeset
|
1625 } |
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diff
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|
1626 |
0 | 1627 //=========================================================================================================== |
1628 // Parsing of main arguments | |
1629 | |
1244
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6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
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|
1630 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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|
1631 uintx max, const char* name) { |
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
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|
1632 // 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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|
1633 // false, otherwise. |
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
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diff
changeset
|
1634 if (val >= min && val <= max) { |
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
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diff
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|
1635 return true; |
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6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
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diff
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|
1636 } |
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
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diff
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|
1637 jio_fprintf(defaultStream::error_stream(), |
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
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diff
changeset
|
1638 "%s of " UINTX_FORMAT " is invalid; must be between " UINTX_FORMAT |
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
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diff
changeset
|
1639 " and " UINTX_FORMAT "\n", |
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
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parents:
1188
diff
changeset
|
1640 name, val, min, max); |
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6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
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diff
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|
1641 return false; |
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6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
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diff
changeset
|
1642 } |
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
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parents:
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diff
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|
1643 |
1744
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
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1681
diff
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|
1644 bool Arguments::verify_min_value(intx val, intx min, const char* name) { |
2366
1fb790245268
6820066: Check that -XX:ParGCArrayScanChunk has a value larger than zero.
jwilhelm
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2362
diff
changeset
|
1645 // 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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|
1646 // false, otherwise. |
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
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diff
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|
1647 if (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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|
1648 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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|
1649 } |
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
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parents:
1681
diff
changeset
|
1650 jio_fprintf(defaultStream::error_stream(), |
2366
1fb790245268
6820066: Check that -XX:ParGCArrayScanChunk has a value larger than zero.
jwilhelm
parents:
2362
diff
changeset
|
1651 "%s of " INTX_FORMAT " is invalid; must be at least " INTX_FORMAT "\n", |
1744
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
ptisnovs
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1681
diff
changeset
|
1652 name, val, min); |
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
ptisnovs
parents:
1681
diff
changeset
|
1653 return false; |
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
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1681
diff
changeset
|
1654 } |
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
ptisnovs
parents:
1681
diff
changeset
|
1655 |
0 | 1656 bool Arguments::verify_percentage(uintx value, const char* name) { |
1657 if (value <= 100) { | |
1658 return true; | |
1659 } | |
1660 jio_fprintf(defaultStream::error_stream(), | |
1661 "%s of " UINTX_FORMAT " is invalid; must be between 0 and 100\n", | |
1662 name, value); | |
1663 return false; | |
1664 } | |
1665 | |
1064 | 1666 static void force_serial_gc() { |
0 | 1667 FLAG_SET_DEFAULT(UseSerialGC, true); |
1668 FLAG_SET_DEFAULT(UseParNewGC, false); | |
1669 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
|
1670 FLAG_SET_DEFAULT(CMSIncrementalMode, false); // special CMS suboption |
0 | 1671 FLAG_SET_DEFAULT(UseParallelGC, false); |
1672 FLAG_SET_DEFAULT(UseParallelOldGC, false); | |
342
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
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parents:
135
diff
changeset
|
1673 FLAG_SET_DEFAULT(UseG1GC, false); |
0 | 1674 } |
1675 | |
1676 static bool verify_serial_gc_flags() { | |
1677 return (UseSerialGC && | |
945
68ef3fdcdb76
6872136: CMS: confusing message may be printed when a collector is switched off implicitly
ysr
parents:
932
diff
changeset
|
1678 !(UseParNewGC || (UseConcMarkSweepGC || CMSIncrementalMode) || UseG1GC || |
342
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
135
diff
changeset
|
1679 UseParallelGC || UseParallelOldGC)); |
0 | 1680 } |
1681 | |
10
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1682 // Check consistency of GC selection |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1683 bool Arguments::check_gc_consistency() { |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1684 bool status = true; |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1685 // Ensure that the user has not selected conflicting sets |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1686 // 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
|
1687 // 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
|
1688 // 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
|
1689 // 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
|
1690 // 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
|
1691 // select conflicting combinations. |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1692 uint i = 0; |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1693 if (UseSerialGC) i++; |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1694 if (UseConcMarkSweepGC || UseParNewGC) i++; |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1695 if (UseParallelGC || UseParallelOldGC) i++; |
845
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
751
diff
changeset
|
1696 if (UseG1GC) i++; |
10
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1697 if (i > 1) { |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1698 jio_fprintf(defaultStream::error_stream(), |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1699 "Conflicting collector combinations in option list; " |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1700 "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
|
1701 "allowed\n"); |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1702 status = false; |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1703 } |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1704 |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1705 return status; |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1706 } |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1707 |
1744
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
ptisnovs
parents:
1681
diff
changeset
|
1708 // Check stack pages settings |
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
ptisnovs
parents:
1681
diff
changeset
|
1709 bool Arguments::check_stack_pages() |
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
ptisnovs
parents:
1681
diff
changeset
|
1710 { |
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
ptisnovs
parents:
1681
diff
changeset
|
1711 bool status = true; |
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
ptisnovs
parents:
1681
diff
changeset
|
1712 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
|
1713 status = status && verify_min_value(StackRedPages, 1, "StackRedPages"); |
1867
b6aedd1acdc0
6983240: guarantee((Solaris::min_stack_allowed >= (StackYellowPages+StackRedPages...) wrong
coleenp
parents:
1864
diff
changeset
|
1714 // 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
|
1715 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
|
1716 return status; |
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
ptisnovs
parents:
1681
diff
changeset
|
1717 } |
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
ptisnovs
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1681
diff
changeset
|
1718 |
0 | 1719 // Check the consistency of vm_init_args |
1720 bool Arguments::check_vm_args_consistency() { | |
1721 // Method for adding checks for flag consistency. | |
1722 // The intent is to warn the user of all possible conflicts, | |
1723 // before returning an error. | |
1724 // Note: Needs platform-dependent factoring. | |
1725 bool status = true; | |
1726 | |
1727 #if ( (defined(COMPILER2) && defined(SPARC))) | |
1728 // NOTE: The call to VM_Version_init depends on the fact that VM_Version_init | |
1729 // on sparc doesn't require generation of a stub as is the case on, e.g., | |
1730 // x86. Normally, VM_Version_init must be called from init_globals in | |
1731 // init.cpp, which is called by the initial java thread *after* arguments | |
1732 // have been parsed. VM_Version_init gets called twice on sparc. | |
1733 extern void VM_Version_init(); | |
1734 VM_Version_init(); | |
1735 if (!VM_Version::has_v9()) { | |
1736 jio_fprintf(defaultStream::error_stream(), | |
1737 "V8 Machine detected, Server requires V9\n"); | |
1738 status = false; | |
1739 } | |
1740 #endif /* COMPILER2 && SPARC */ | |
1741 | |
1742 // Allow both -XX:-UseStackBanging and -XX:-UseBoundThreads in non-product | |
1743 // builds so the cost of stack banging can be measured. | |
1744 #if (defined(PRODUCT) && defined(SOLARIS)) | |
1745 if (!UseBoundThreads && !UseStackBanging) { | |
1746 jio_fprintf(defaultStream::error_stream(), | |
1747 "-UseStackBanging conflicts with -UseBoundThreads\n"); | |
1748 | |
1749 status = false; | |
1750 } | |
1751 #endif | |
1752 | |
1753 if (TLABRefillWasteFraction == 0) { | |
1754 jio_fprintf(defaultStream::error_stream(), | |
1755 "TLABRefillWasteFraction should be a denominator, " | |
1756 "not " SIZE_FORMAT "\n", | |
1757 TLABRefillWasteFraction); | |
1758 status = false; | |
1759 } | |
1760 | |
10
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1761 status = status && verify_percentage(AdaptiveSizePolicyWeight, |
0 | 1762 "AdaptiveSizePolicyWeight"); |
10
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1763 status = status && verify_percentage(AdaptivePermSizeWeight, "AdaptivePermSizeWeight"); |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1764 status = status && verify_percentage(ThresholdTolerance, "ThresholdTolerance"); |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1765 status = status && verify_percentage(MinHeapFreeRatio, "MinHeapFreeRatio"); |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1766 status = status && verify_percentage(MaxHeapFreeRatio, "MaxHeapFreeRatio"); |
0 | 1767 |
1768 if (MinHeapFreeRatio > MaxHeapFreeRatio) { | |
1769 jio_fprintf(defaultStream::error_stream(), | |
1770 "MinHeapFreeRatio (" UINTX_FORMAT ") must be less than or " | |
1771 "equal to MaxHeapFreeRatio (" UINTX_FORMAT ")\n", | |
1772 MinHeapFreeRatio, MaxHeapFreeRatio); | |
1773 status = false; | |
1774 } | |
1775 // Keeping the heap 100% free is hard ;-) so limit it to 99%. | |
1776 MinHeapFreeRatio = MIN2(MinHeapFreeRatio, (uintx) 99); | |
1777 | |
1778 if (FullGCALot && FLAG_IS_DEFAULT(MarkSweepAlwaysCompactCount)) { | |
1779 MarkSweepAlwaysCompactCount = 1; // Move objects every gc. | |
1780 } | |
1781 | |
483
0f773163217d
6765954: par compact - stress mode for splitting young gen spaces
jcoomes
parents:
449
diff
changeset
|
1782 if (UseParallelOldGC && ParallelOldGCSplitALot) { |
0f773163217d
6765954: par compact - stress mode for splitting young gen spaces
jcoomes
parents:
449
diff
changeset
|
1783 // Settings to encourage splitting. |
0f773163217d
6765954: par compact - stress mode for splitting young gen spaces
jcoomes
parents:
449
diff
changeset
|
1784 if (!FLAG_IS_CMDLINE(NewRatio)) { |
0f773163217d
6765954: par compact - stress mode for splitting young gen spaces
jcoomes
parents:
449
diff
changeset
|
1785 FLAG_SET_CMDLINE(intx, NewRatio, 2); |
0f773163217d
6765954: par compact - stress mode for splitting young gen spaces
jcoomes
parents:
449
diff
changeset
|
1786 } |
0f773163217d
6765954: par compact - stress mode for splitting young gen spaces
jcoomes
parents:
449
diff
changeset
|
1787 if (!FLAG_IS_CMDLINE(ScavengeBeforeFullGC)) { |
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1788 FLAG_SET_CMDLINE(bool, ScavengeBeforeFullGC, false); |
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1789 } |
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1790 } |
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1791 |
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1792 status = status && verify_percentage(GCHeapFreeLimit, "GCHeapFreeLimit"); |
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1793 status = status && verify_percentage(GCTimeLimit, "GCTimeLimit"); |
0 | 1794 if (GCTimeLimit == 100) { |
1795 // Turn off gc-overhead-limit-exceeded checks | |
1796 FLAG_SET_DEFAULT(UseGCOverheadLimit, false); | |
1797 } | |
1798 | |
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1799 status = status && verify_percentage(GCHeapFreeLimit, "GCHeapFreeLimit"); |
0 | 1800 |
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1801 status = status && check_gc_consistency(); |
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1802 status = status && check_stack_pages(); |
0 | 1803 |
1804 if (_has_alloc_profile) { | |
1805 if (UseParallelGC || UseParallelOldGC) { | |
1806 jio_fprintf(defaultStream::error_stream(), | |
1807 "error: invalid argument combination.\n" | |
1808 "Allocation profiling (-Xaprof) cannot be used together with " | |
1809 "Parallel GC (-XX:+UseParallelGC or -XX:+UseParallelOldGC).\n"); | |
1810 status = false; | |
1811 } | |
1812 if (UseConcMarkSweepGC) { | |
1813 jio_fprintf(defaultStream::error_stream(), | |
1814 "error: invalid argument combination.\n" | |
1815 "Allocation profiling (-Xaprof) cannot be used together with " | |
1816 "the CMS collector (-XX:+UseConcMarkSweepGC).\n"); | |
1817 status = false; | |
1818 } | |
1819 } | |
1820 | |
1821 if (CMSIncrementalMode) { | |
1822 if (!UseConcMarkSweepGC) { | |
1823 jio_fprintf(defaultStream::error_stream(), | |
1824 "error: invalid argument combination.\n" | |
1825 "The CMS collector (-XX:+UseConcMarkSweepGC) must be " | |
1826 "selected in order\nto use CMSIncrementalMode.\n"); | |
1827 status = false; | |
1828 } else { | |
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1829 status = status && verify_percentage(CMSIncrementalDutyCycle, |
0 | 1830 "CMSIncrementalDutyCycle"); |
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1831 status = status && verify_percentage(CMSIncrementalDutyCycleMin, |
0 | 1832 "CMSIncrementalDutyCycleMin"); |
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1833 status = status && verify_percentage(CMSIncrementalSafetyFactor, |
0 | 1834 "CMSIncrementalSafetyFactor"); |
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1835 status = status && verify_percentage(CMSIncrementalOffset, |
0 | 1836 "CMSIncrementalOffset"); |
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1837 status = status && verify_percentage(CMSExpAvgFactor, |
0 | 1838 "CMSExpAvgFactor"); |
1839 // If it was not set on the command line, set | |
1840 // CMSInitiatingOccupancyFraction to 1 so icms can initiate cycles early. | |
1841 if (CMSInitiatingOccupancyFraction < 0) { | |
1842 FLAG_SET_DEFAULT(CMSInitiatingOccupancyFraction, 1); | |
1843 } | |
1844 } | |
1845 } | |
1846 | |
1847 // CMS space iteration, which FLSVerifyAllHeapreferences entails, | |
1848 // insists that we hold the requisite locks so that the iteration is | |
1849 // MT-safe. For the verification at start-up and shut-down, we don't | |
1850 // yet have a good way of acquiring and releasing these locks, | |
1851 // which are not visible at the CollectedHeap level. We want to | |
1852 // be able to acquire these locks and then do the iteration rather | |
1853 // than just disable the lock verification. This will be fixed under | |
1854 // bug 4788986. | |
1855 if (UseConcMarkSweepGC && FLSVerifyAllHeapReferences) { | |
1856 if (VerifyGCStartAt == 0) { | |
1857 warning("Heap verification at start-up disabled " | |
1858 "(due to current incompatibility with FLSVerifyAllHeapReferences)"); | |
1859 VerifyGCStartAt = 1; // Disable verification at start-up | |
1860 } | |
1861 if (VerifyBeforeExit) { | |
1862 warning("Heap verification at shutdown disabled " | |
1863 "(due to current incompatibility with FLSVerifyAllHeapReferences)"); | |
1864 VerifyBeforeExit = false; // Disable verification at shutdown | |
1865 } | |
1866 } | |
1867 | |
1868 // Note: only executed in non-PRODUCT mode | |
1869 if (!UseAsyncConcMarkSweepGC && | |
1870 (ExplicitGCInvokesConcurrent || | |
1871 ExplicitGCInvokesConcurrentAndUnloadsClasses)) { | |
1872 jio_fprintf(defaultStream::error_stream(), | |
1873 "error: +ExplictGCInvokesConcurrent[AndUnloadsClasses] conflicts" | |
1874 " with -UseAsyncConcMarkSweepGC"); | |
1875 status = false; | |
1876 } | |
1877 | |
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1878 status = status && verify_min_value(ParGCArrayScanChunk, 1, "ParGCArrayScanChunk"); |
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1879 |
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1880 #ifndef SERIALGC |
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1881 if (UseG1GC) { |
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1882 status = status && verify_percentage(InitiatingHeapOccupancyPercent, |
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1883 "InitiatingHeapOccupancyPercent"); |
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1884 status = status && verify_min_value(G1RefProcDrainInterval, 1, |
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1885 "G1RefProcDrainInterval"); |
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1886 status = status && verify_min_value((intx)G1ConcMarkStepDurationMillis, 1, |
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1887 "G1ConcMarkStepDurationMillis"); |
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1888 } |
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1889 #endif |
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1890 |
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1891 status = status && verify_interval(RefDiscoveryPolicy, |
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1892 ReferenceProcessor::DiscoveryPolicyMin, |
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1893 ReferenceProcessor::DiscoveryPolicyMax, |
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1894 "RefDiscoveryPolicy"); |
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1895 |
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1896 // Limit the lower bound of this flag to 1 as it is used in a division |
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1897 // expression. |
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1898 status = status && verify_interval(TLABWasteTargetPercent, |
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1899 1, 100, "TLABWasteTargetPercent"); |
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1900 |
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1901 status = status && verify_object_alignment(); |
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1902 |
0 | 1903 return status; |
1904 } | |
1905 | |
1906 bool Arguments::is_bad_option(const JavaVMOption* option, jboolean ignore, | |
1907 const char* option_type) { | |
1908 if (ignore) return false; | |
1909 | |
1910 const char* spacer = " "; | |
1911 if (option_type == NULL) { | |
1912 option_type = ++spacer; // Set both to the empty string. | |
1913 } | |
1914 | |
1915 if (os::obsolete_option(option)) { | |
1916 jio_fprintf(defaultStream::error_stream(), | |
1917 "Obsolete %s%soption: %s\n", option_type, spacer, | |
1918 option->optionString); | |
1919 return false; | |
1920 } else { | |
1921 jio_fprintf(defaultStream::error_stream(), | |
1922 "Unrecognized %s%soption: %s\n", option_type, spacer, | |
1923 option->optionString); | |
1924 return true; | |
1925 } | |
1926 } | |
1927 | |
1928 static const char* user_assertion_options[] = { | |
1929 "-da", "-ea", "-disableassertions", "-enableassertions", 0 | |
1930 }; | |
1931 | |
1932 static const char* system_assertion_options[] = { | |
1933 "-dsa", "-esa", "-disablesystemassertions", "-enablesystemassertions", 0 | |
1934 }; | |
1935 | |
1936 // Return true if any of the strings in null-terminated array 'names' matches. | |
1937 // If tail_allowed is true, then the tail must begin with a colon; otherwise, | |
1938 // the option must match exactly. | |
1939 static bool match_option(const JavaVMOption* option, const char** names, const char** tail, | |
1940 bool tail_allowed) { | |
1941 for (/* empty */; *names != NULL; ++names) { | |
1942 if (match_option(option, *names, tail)) { | |
1943 if (**tail == '\0' || tail_allowed && **tail == ':') { | |
1944 return true; | |
1945 } | |
1946 } | |
1947 } | |
1948 return false; | |
1949 } | |
1950 | |
1284 | 1951 bool Arguments::parse_uintx(const char* value, |
1952 uintx* uintx_arg, | |
1953 uintx min_size) { | |
1954 | |
1955 // Check the sign first since atomull() parses only unsigned values. | |
1956 bool value_is_positive = !(*value == '-'); | |
1957 | |
1958 if (value_is_positive) { | |
1959 julong n; | |
1960 bool good_return = atomull(value, &n); | |
1961 if (good_return) { | |
1962 bool above_minimum = n >= min_size; | |
1963 bool value_is_too_large = n > max_uintx; | |
1964 | |
1965 if (above_minimum && !value_is_too_large) { | |
1966 *uintx_arg = n; | |
1967 return true; | |
1968 } | |
1969 } | |
1970 } | |
1971 return false; | |
1972 } | |
1973 | |
0 | 1974 Arguments::ArgsRange Arguments::parse_memory_size(const char* s, |
489
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1975 julong* long_arg, |
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1976 julong min_size) { |
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1977 if (!atomull(s, long_arg)) return arg_unreadable; |
0 | 1978 return check_memory_size(*long_arg, min_size); |
1979 } | |
1980 | |
1981 // Parse JavaVMInitArgs structure | |
1982 | |
1983 jint Arguments::parse_vm_init_args(const JavaVMInitArgs* args) { | |
1984 // For components of the system classpath. | |
1985 SysClassPath scp(Arguments::get_sysclasspath()); | |
1986 bool scp_assembly_required = false; | |
1987 | |
1988 // Save default settings for some mode flags | |
1989 Arguments::_AlwaysCompileLoopMethods = AlwaysCompileLoopMethods; | |
1990 Arguments::_UseOnStackReplacement = UseOnStackReplacement; | |
1991 Arguments::_ClipInlining = ClipInlining; | |
1992 Arguments::_BackgroundCompilation = BackgroundCompilation; | |
1993 | |
1994 // Parse JAVA_TOOL_OPTIONS environment variable (if present) | |
1995 jint result = parse_java_tool_options_environment_variable(&scp, &scp_assembly_required); | |
1996 if (result != JNI_OK) { | |
1997 return result; | |
1998 } | |
1999 | |
2000 // Parse JavaVMInitArgs structure passed in | |
2001 result = parse_each_vm_init_arg(args, &scp, &scp_assembly_required, COMMAND_LINE); | |
2002 if (result != JNI_OK) { | |
2003 return result; | |
2004 } | |
2005 | |
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2006 if (AggressiveOpts) { |
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2007 // Insert alt-rt.jar between user-specified bootclasspath |
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2008 // prefix and the default bootclasspath. os::set_boot_path() |
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2009 // uses meta_index_dir as the default bootclasspath directory. |
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2010 const char* altclasses_jar = "alt-rt.jar"; |
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2011 size_t altclasses_path_len = strlen(get_meta_index_dir()) + 1 + |
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|
2012 strlen(altclasses_jar); |
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|
2013 char* altclasses_path = NEW_C_HEAP_ARRAY(char, altclasses_path_len); |
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|
2014 strcpy(altclasses_path, get_meta_index_dir()); |
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2015 strcat(altclasses_path, altclasses_jar); |
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|
2016 scp.add_suffix_to_prefix(altclasses_path); |
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2017 scp_assembly_required = true; |
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2018 FREE_C_HEAP_ARRAY(char, altclasses_path); |
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2019 } |
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2020 |
0 | 2021 // Parse _JAVA_OPTIONS environment variable (if present) (mimics classic VM) |
2022 result = parse_java_options_environment_variable(&scp, &scp_assembly_required); | |
2023 if (result != JNI_OK) { | |
2024 return result; | |
2025 } | |
2026 | |
2027 // Do final processing now that all arguments have been parsed | |
2028 result = finalize_vm_init_args(&scp, scp_assembly_required); | |
2029 if (result != JNI_OK) { | |
2030 return result; | |
2031 } | |
2032 | |
2033 return JNI_OK; | |
2034 } | |
2035 | |
2036 jint Arguments::parse_each_vm_init_arg(const JavaVMInitArgs* args, | |
2037 SysClassPath* scp_p, | |
2038 bool* scp_assembly_required_p, | |
2039 FlagValueOrigin origin) { | |
2040 // Remaining part of option string | |
2041 const char* tail; | |
2042 | |
2043 // iterate over arguments | |
2044 for (int index = 0; index < args->nOptions; index++) { | |
2045 bool is_absolute_path = false; // for -agentpath vs -agentlib | |
2046 | |
2047 const JavaVMOption* option = args->options + index; | |
2048 | |
2049 if (!match_option(option, "-Djava.class.path", &tail) && | |
2050 !match_option(option, "-Dsun.java.command", &tail) && | |
2051 !match_option(option, "-Dsun.java.launcher", &tail)) { | |
2052 | |
2053 // add all jvm options to the jvm_args string. This string | |
2054 // is used later to set the java.vm.args PerfData string constant. | |
2055 // the -Djava.class.path and the -Dsun.java.command options are | |
2056 // omitted from jvm_args string as each have their own PerfData | |
2057 // string constant object. | |
2058 build_jvm_args(option->optionString); | |
2059 } | |
2060 | |
2061 // -verbose:[class/gc/jni] | |
2062 if (match_option(option, "-verbose", &tail)) { | |
2063 if (!strcmp(tail, ":class") || !strcmp(tail, "")) { | |
2064 FLAG_SET_CMDLINE(bool, TraceClassLoading, true); | |
2065 FLAG_SET_CMDLINE(bool, TraceClassUnloading, true); | |
2066 } else if (!strcmp(tail, ":gc")) { | |
2067 FLAG_SET_CMDLINE(bool, PrintGC, true); | |
2068 } else if (!strcmp(tail, ":jni")) { | |
2069 FLAG_SET_CMDLINE(bool, PrintJNIResolving, true); | |
2070 } | |
2071 // -da / -ea / -disableassertions / -enableassertions | |
2072 // These accept an optional class/package name separated by a colon, e.g., | |
2073 // -da:java.lang.Thread. | |
2074 } else if (match_option(option, user_assertion_options, &tail, true)) { | |
2075 bool enable = option->optionString[1] == 'e'; // char after '-' is 'e' | |
2076 if (*tail == '\0') { | |
2077 JavaAssertions::setUserClassDefault(enable); | |
2078 } else { | |
2079 assert(*tail == ':', "bogus match by match_option()"); | |
2080 JavaAssertions::addOption(tail + 1, enable); | |
2081 } | |
2082 // -dsa / -esa / -disablesystemassertions / -enablesystemassertions | |
2083 } else if (match_option(option, system_assertion_options, &tail, false)) { | |
2084 bool enable = option->optionString[1] == 'e'; // char after '-' is 'e' | |
2085 JavaAssertions::setSystemClassDefault(enable); | |
2086 // -bootclasspath: | |
2087 } else if (match_option(option, "-Xbootclasspath:", &tail)) { | |
2088 scp_p->reset_path(tail); | |
2089 *scp_assembly_required_p = true; | |
2090 // -bootclasspath/a: | |
2091 } else if (match_option(option, "-Xbootclasspath/a:", &tail)) { | |
2092 scp_p->add_suffix(tail); | |
2093 *scp_assembly_required_p = true; | |
2094 // -bootclasspath/p: | |
2095 } else if (match_option(option, "-Xbootclasspath/p:", &tail)) { | |
2096 scp_p->add_prefix(tail); | |
2097 *scp_assembly_required_p = true; | |
2098 // -Xrun | |
2099 } else if (match_option(option, "-Xrun", &tail)) { | |
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2100 if (tail != NULL) { |
0 | 2101 const char* pos = strchr(tail, ':'); |
2102 size_t len = (pos == NULL) ? strlen(tail) : pos - tail; | |
2103 char* name = (char*)memcpy(NEW_C_HEAP_ARRAY(char, len + 1), tail, len); | |
2104 name[len] = '\0'; | |
2105 | |
2106 char *options = NULL; | |
2107 if(pos != NULL) { | |
2108 size_t len2 = strlen(pos+1) + 1; // options start after ':'. Final zero must be copied. | |
2109 options = (char*)memcpy(NEW_C_HEAP_ARRAY(char, len2), pos+1, len2); | |
2110 } | |
2111 #ifdef JVMTI_KERNEL | |
2112 if ((strcmp(name, "hprof") == 0) || (strcmp(name, "jdwp") == 0)) { | |
2113 warning("profiling and debugging agents are not supported with Kernel VM"); | |
2114 } else | |
2115 #endif // JVMTI_KERNEL | |
2116 add_init_library(name, options); | |
2117 } | |
2118 // -agentlib and -agentpath | |
2119 } else if (match_option(option, "-agentlib:", &tail) || | |
2120 (is_absolute_path = match_option(option, "-agentpath:", &tail))) { | |
2121 if(tail != NULL) { | |
2122 const char* pos = strchr(tail, '='); | |
2123 size_t len = (pos == NULL) ? strlen(tail) : pos - tail; | |
2124 char* name = strncpy(NEW_C_HEAP_ARRAY(char, len + 1), tail, len); | |
2125 name[len] = '\0'; | |
2126 | |
2127 char *options = NULL; | |
2128 if(pos != NULL) { | |
2129 options = strcpy(NEW_C_HEAP_ARRAY(char, strlen(pos + 1) + 1), pos + 1); | |
2130 } | |
2131 #ifdef JVMTI_KERNEL | |
2132 if ((strcmp(name, "hprof") == 0) || (strcmp(name, "jdwp") == 0)) { | |
2133 warning("profiling and debugging agents are not supported with Kernel VM"); | |
2134 } else | |
2135 #endif // JVMTI_KERNEL | |
2136 add_init_agent(name, options, is_absolute_path); | |
2137 | |
2138 } | |
2139 // -javaagent | |
2140 } else if (match_option(option, "-javaagent:", &tail)) { | |
2141 if(tail != NULL) { | |
2142 char *options = strcpy(NEW_C_HEAP_ARRAY(char, strlen(tail) + 1), tail); | |
2143 add_init_agent("instrument", options, false); | |
2144 } | |
2145 // -Xnoclassgc | |
2146 } else if (match_option(option, "-Xnoclassgc", &tail)) { | |
2147 FLAG_SET_CMDLINE(bool, ClassUnloading, false); | |
2148 // -Xincgc: i-CMS | |
2149 } else if (match_option(option, "-Xincgc", &tail)) { | |
2150 FLAG_SET_CMDLINE(bool, UseConcMarkSweepGC, true); | |
2151 FLAG_SET_CMDLINE(bool, CMSIncrementalMode, true); | |
2152 // -Xnoincgc: no i-CMS | |
2153 } else if (match_option(option, "-Xnoincgc", &tail)) { | |
2154 FLAG_SET_CMDLINE(bool, UseConcMarkSweepGC, false); | |
2155 FLAG_SET_CMDLINE(bool, CMSIncrementalMode, false); | |
2156 // -Xconcgc | |
2157 } else if (match_option(option, "-Xconcgc", &tail)) { | |
2158 FLAG_SET_CMDLINE(bool, UseConcMarkSweepGC, true); | |
2159 // -Xnoconcgc | |
2160 } else if (match_option(option, "-Xnoconcgc", &tail)) { | |
2161 FLAG_SET_CMDLINE(bool, UseConcMarkSweepGC, false); | |
2162 // -Xbatch | |
2163 } else if (match_option(option, "-Xbatch", &tail)) { | |
2164 FLAG_SET_CMDLINE(bool, BackgroundCompilation, false); | |
2165 // -Xmn for compatibility with other JVM vendors | |
2166 } else if (match_option(option, "-Xmn", &tail)) { | |
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2167 julong long_initial_eden_size = 0; |
0 | 2168 ArgsRange errcode = parse_memory_size(tail, &long_initial_eden_size, 1); |
2169 if (errcode != arg_in_range) { | |
2170 jio_fprintf(defaultStream::error_stream(), | |
2171 "Invalid initial eden size: %s\n", option->optionString); | |
2172 describe_range_error(errcode); | |
2173 return JNI_EINVAL; | |
2174 } | |
1064 | 2175 FLAG_SET_CMDLINE(uintx, MaxNewSize, (uintx)long_initial_eden_size); |
2176 FLAG_SET_CMDLINE(uintx, NewSize, (uintx)long_initial_eden_size); | |
0 | 2177 // -Xms |
2178 } else if (match_option(option, "-Xms", &tail)) { | |
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2179 julong long_initial_heap_size = 0; |
0 | 2180 ArgsRange errcode = parse_memory_size(tail, &long_initial_heap_size, 1); |
2181 if (errcode != arg_in_range) { | |
2182 jio_fprintf(defaultStream::error_stream(), | |
2183 "Invalid initial heap size: %s\n", option->optionString); | |
2184 describe_range_error(errcode); | |
2185 return JNI_EINVAL; | |
2186 } | |
1064 | 2187 FLAG_SET_CMDLINE(uintx, InitialHeapSize, (uintx)long_initial_heap_size); |
0 | 2188 // Currently the minimum size and the initial heap sizes are the same. |
1064 | 2189 set_min_heap_size(InitialHeapSize); |
0 | 2190 // -Xmx |
2191 } else if (match_option(option, "-Xmx", &tail)) { | |
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2192 julong long_max_heap_size = 0; |
0 | 2193 ArgsRange errcode = parse_memory_size(tail, &long_max_heap_size, 1); |
2194 if (errcode != arg_in_range) { | |
2195 jio_fprintf(defaultStream::error_stream(), | |
2196 "Invalid maximum heap size: %s\n", option->optionString); | |
2197 describe_range_error(errcode); | |
2198 return JNI_EINVAL; | |
2199 } | |
1064 | 2200 FLAG_SET_CMDLINE(uintx, MaxHeapSize, (uintx)long_max_heap_size); |
0 | 2201 // Xmaxf |
2202 } else if (match_option(option, "-Xmaxf", &tail)) { | |
2203 int maxf = (int)(atof(tail) * 100); | |
2204 if (maxf < 0 || maxf > 100) { | |
2205 jio_fprintf(defaultStream::error_stream(), | |
2206 "Bad max heap free percentage size: %s\n", | |
2207 option->optionString); | |
2208 return JNI_EINVAL; | |
2209 } else { | |
2210 FLAG_SET_CMDLINE(uintx, MaxHeapFreeRatio, maxf); | |
2211 } | |
2212 // Xminf | |
2213 } else if (match_option(option, "-Xminf", &tail)) { | |
2214 int minf = (int)(atof(tail) * 100); | |
2215 if (minf < 0 || minf > 100) { | |
2216 jio_fprintf(defaultStream::error_stream(), | |
2217 "Bad min heap free percentage size: %s\n", | |
2218 option->optionString); | |
2219 return JNI_EINVAL; | |
2220 } else { | |
2221 FLAG_SET_CMDLINE(uintx, MinHeapFreeRatio, minf); | |
2222 } | |
2223 // -Xss | |
2224 } else if (match_option(option, "-Xss", &tail)) { | |
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2225 julong long_ThreadStackSize = 0; |
0 | 2226 ArgsRange errcode = parse_memory_size(tail, &long_ThreadStackSize, 1000); |
2227 if (errcode != arg_in_range) { | |
2228 jio_fprintf(defaultStream::error_stream(), | |
2229 "Invalid thread stack size: %s\n", option->optionString); | |
2230 describe_range_error(errcode); | |
2231 return JNI_EINVAL; | |
2232 } | |
2233 // Internally track ThreadStackSize in units of 1024 bytes. | |
2234 FLAG_SET_CMDLINE(intx, ThreadStackSize, | |
2235 round_to((int)long_ThreadStackSize, K) / K); | |
2236 // -Xoss | |
2237 } else if (match_option(option, "-Xoss", &tail)) { | |
2238 // HotSpot does not have separate native and Java stacks, ignore silently for compatibility | |
2239 // -Xmaxjitcodesize | |
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2240 } else if (match_option(option, "-Xmaxjitcodesize", &tail) || |
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2241 match_option(option, "-XX:ReservedCodeCacheSize=", &tail)) { |
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2242 julong long_ReservedCodeCacheSize = 0; |
0 | 2243 ArgsRange errcode = parse_memory_size(tail, &long_ReservedCodeCacheSize, |
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2244 (size_t)InitialCodeCacheSize); |
0 | 2245 if (errcode != arg_in_range) { |
2246 jio_fprintf(defaultStream::error_stream(), | |
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2247 "Invalid maximum code cache size: %s. Should be greater than InitialCodeCacheSize=%dK\n", |
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2248 option->optionString, InitialCodeCacheSize/K); |
0 | 2249 describe_range_error(errcode); |
2250 return JNI_EINVAL; | |
2251 } | |
2252 FLAG_SET_CMDLINE(uintx, ReservedCodeCacheSize, (uintx)long_ReservedCodeCacheSize); | |
2253 // -green | |
2254 } else if (match_option(option, "-green", &tail)) { | |
2255 jio_fprintf(defaultStream::error_stream(), | |
2256 "Green threads support not available\n"); | |
2257 return JNI_EINVAL; | |
2258 // -native | |
2259 } else if (match_option(option, "-native", &tail)) { | |
2260 // HotSpot always uses native threads, ignore silently for compatibility | |
2261 // -Xsqnopause | |
2262 } else if (match_option(option, "-Xsqnopause", &tail)) { | |
2263 // EVM option, ignore silently for compatibility | |
2264 // -Xrs | |
2265 } else if (match_option(option, "-Xrs", &tail)) { | |
2266 // Classic/EVM option, new functionality | |
2267 FLAG_SET_CMDLINE(bool, ReduceSignalUsage, true); | |
2268 } else if (match_option(option, "-Xusealtsigs", &tail)) { | |
2269 // change default internal VM signals used - lower case for back compat | |
2270 FLAG_SET_CMDLINE(bool, UseAltSigs, true); | |
2271 // -Xoptimize | |
2272 } else if (match_option(option, "-Xoptimize", &tail)) { | |
2273 // EVM option, ignore silently for compatibility | |
2274 // -Xprof | |
2275 } else if (match_option(option, "-Xprof", &tail)) { | |
2276 #ifndef FPROF_KERNEL | |
2277 _has_profile = true; | |
2278 #else // FPROF_KERNEL | |
2279 // do we have to exit? | |
2280 warning("Kernel VM does not support flat profiling."); | |
2281 #endif // FPROF_KERNEL | |
2282 // -Xaprof | |
2283 } else if (match_option(option, "-Xaprof", &tail)) { | |
2284 _has_alloc_profile = true; | |
2285 // -Xconcurrentio | |
2286 } else if (match_option(option, "-Xconcurrentio", &tail)) { | |
2287 FLAG_SET_CMDLINE(bool, UseLWPSynchronization, true); | |
2288 FLAG_SET_CMDLINE(bool, BackgroundCompilation, false); | |
2289 FLAG_SET_CMDLINE(intx, DeferThrSuspendLoopCount, 1); | |
2290 FLAG_SET_CMDLINE(bool, UseTLAB, false); | |
2291 FLAG_SET_CMDLINE(uintx, NewSizeThreadIncrease, 16 * K); // 20Kb per thread added to new generation | |
2292 | |
2293 // -Xinternalversion | |
2294 } else if (match_option(option, "-Xinternalversion", &tail)) { | |
2295 jio_fprintf(defaultStream::output_stream(), "%s\n", | |
2296 VM_Version::internal_vm_info_string()); | |
2297 vm_exit(0); | |
2298 #ifndef PRODUCT | |
2299 // -Xprintflags | |
2300 } else if (match_option(option, "-Xprintflags", &tail)) { | |
2301 CommandLineFlags::printFlags(); | |
2302 vm_exit(0); | |
2303 #endif | |
2304 // -D | |
2305 } else if (match_option(option, "-D", &tail)) { | |
2306 if (!add_property(tail)) { | |
2307 return JNI_ENOMEM; | |
2308 } | |
2309 // Out of the box management support | |
2310 if (match_option(option, "-Dcom.sun.management", &tail)) { | |
2311 FLAG_SET_CMDLINE(bool, ManagementServer, true); | |
2312 } | |
2313 // -Xint | |
2314 } else if (match_option(option, "-Xint", &tail)) { | |
2315 set_mode_flags(_int); | |
2316 // -Xmixed | |
2317 } else if (match_option(option, "-Xmixed", &tail)) { | |
2318 set_mode_flags(_mixed); | |
2319 // -Xcomp | |
2320 } else if (match_option(option, "-Xcomp", &tail)) { | |
2321 // for testing the compiler; turn off all flags that inhibit compilation | |
2322 set_mode_flags(_comp); | |
2323 | |
2324 // -Xshare:dump | |
2325 } else if (match_option(option, "-Xshare:dump", &tail)) { | |
2326 #ifdef TIERED | |
2327 FLAG_SET_CMDLINE(bool, DumpSharedSpaces, true); | |
2328 set_mode_flags(_int); // Prevent compilation, which creates objects | |
2329 #elif defined(COMPILER2) | |
2330 vm_exit_during_initialization( | |
2331 "Dumping a shared archive is not supported on the Server JVM.", NULL); | |
2332 #elif defined(KERNEL) | |
2333 vm_exit_during_initialization( | |
2334 "Dumping a shared archive is not supported on the Kernel JVM.", NULL); | |
2335 #else | |
2336 FLAG_SET_CMDLINE(bool, DumpSharedSpaces, true); | |
2337 set_mode_flags(_int); // Prevent compilation, which creates objects | |
2338 #endif | |
2339 // -Xshare:on | |
2340 } else if (match_option(option, "-Xshare:on", &tail)) { | |
2341 FLAG_SET_CMDLINE(bool, UseSharedSpaces, true); | |
2342 FLAG_SET_CMDLINE(bool, RequireSharedSpaces, true); | |
2343 // -Xshare:auto | |
2344 } else if (match_option(option, "-Xshare:auto", &tail)) { | |
2345 FLAG_SET_CMDLINE(bool, UseSharedSpaces, true); | |
2346 FLAG_SET_CMDLINE(bool, RequireSharedSpaces, false); | |
2347 // -Xshare:off | |
2348 } else if (match_option(option, "-Xshare:off", &tail)) { | |
2349 FLAG_SET_CMDLINE(bool, UseSharedSpaces, false); | |
2350 FLAG_SET_CMDLINE(bool, RequireSharedSpaces, false); | |
2351 | |
2352 // -Xverify | |
2353 } else if (match_option(option, "-Xverify", &tail)) { | |
2354 if (strcmp(tail, ":all") == 0 || strcmp(tail, "") == 0) { | |
2355 FLAG_SET_CMDLINE(bool, BytecodeVerificationLocal, true); | |
2356 FLAG_SET_CMDLINE(bool, BytecodeVerificationRemote, true); | |
2357 } else if (strcmp(tail, ":remote") == 0) { | |
2358 FLAG_SET_CMDLINE(bool, BytecodeVerificationLocal, false); | |
2359 FLAG_SET_CMDLINE(bool, BytecodeVerificationRemote, true); | |
2360 } else if (strcmp(tail, ":none") == 0) { | |
2361 FLAG_SET_CMDLINE(bool, BytecodeVerificationLocal, false); | |
2362 FLAG_SET_CMDLINE(bool, BytecodeVerificationRemote, false); | |
2363 } else if (is_bad_option(option, args->ignoreUnrecognized, "verification")) { | |
2364 return JNI_EINVAL; | |
2365 } | |
2366 // -Xdebug | |
2367 } else if (match_option(option, "-Xdebug", &tail)) { | |
2368 // note this flag has been used, then ignore | |
2369 set_xdebug_mode(true); | |
2370 // -Xnoagent | |
2371 } else if (match_option(option, "-Xnoagent", &tail)) { | |
2372 // For compatibility with classic. HotSpot refuses to load the old style agent.dll. | |
2373 } else if (match_option(option, "-Xboundthreads", &tail)) { | |
2374 // Bind user level threads to kernel threads (Solaris only) | |
2375 FLAG_SET_CMDLINE(bool, UseBoundThreads, true); | |
2376 } else if (match_option(option, "-Xloggc:", &tail)) { | |
2377 // Redirect GC output to the file. -Xloggc:<filename> | |
2378 // ostream_init_log(), when called will use this filename | |
2379 // to initialize a fileStream. | |
2380 _gc_log_filename = strdup(tail); | |
2381 FLAG_SET_CMDLINE(bool, PrintGC, true); | |
2382 FLAG_SET_CMDLINE(bool, PrintGCTimeStamps, true); | |
2383 FLAG_SET_CMDLINE(bool, TraceClassUnloading, true); | |
2384 | |
2385 // JNI hooks | |
2386 } else if (match_option(option, "-Xcheck", &tail)) { | |
2387 if (!strcmp(tail, ":jni")) { | |
2388 CheckJNICalls = true; | |
2389 } else if (is_bad_option(option, args->ignoreUnrecognized, | |
2390 "check")) { | |
2391 return JNI_EINVAL; | |
2392 } | |
2393 } else if (match_option(option, "vfprintf", &tail)) { | |
2394 _vfprintf_hook = CAST_TO_FN_PTR(vfprintf_hook_t, option->extraInfo); | |
2395 } else if (match_option(option, "exit", &tail)) { | |
2396 _exit_hook = CAST_TO_FN_PTR(exit_hook_t, option->extraInfo); | |
2397 } else if (match_option(option, "abort", &tail)) { | |
2398 _abort_hook = CAST_TO_FN_PTR(abort_hook_t, option->extraInfo); | |
2399 // -XX:+AggressiveHeap | |
2400 } else if (match_option(option, "-XX:+AggressiveHeap", &tail)) { | |
2401 | |
2402 // This option inspects the machine and attempts to set various | |
2403 // parameters to be optimal for long-running, memory allocation | |
2404 // intensive jobs. It is intended for machines with large | |
2405 // amounts of cpu and memory. | |
2406 | |
2407 // initHeapSize is needed since _initial_heap_size is 4 bytes on a 32 bit | |
2408 // VM, but we may not be able to represent the total physical memory | |
2409 // available (like having 8gb of memory on a box but using a 32bit VM). | |
2410 // Thus, we need to make sure we're using a julong for intermediate | |
2411 // calculations. | |
2412 julong initHeapSize; | |
2413 julong total_memory = os::physical_memory(); | |
2414 | |
2415 if (total_memory < (julong)256*M) { | |
2416 jio_fprintf(defaultStream::error_stream(), | |
2417 "You need at least 256mb of memory to use -XX:+AggressiveHeap\n"); | |
2418 vm_exit(1); | |
2419 } | |
2420 | |
2421 // The heap size is half of available memory, or (at most) | |
2422 // all of possible memory less 160mb (leaving room for the OS | |
2423 // when using ISM). This is the maximum; because adaptive sizing | |
2424 // is turned on below, the actual space used may be smaller. | |
2425 | |
2426 initHeapSize = MIN2(total_memory / (julong)2, | |
2427 total_memory - (julong)160*M); | |
2428 | |
2429 // Make sure that if we have a lot of memory we cap the 32 bit | |
2430 // process space. The 64bit VM version of this function is a nop. | |
2431 initHeapSize = os::allocatable_physical_memory(initHeapSize); | |
2432 | |
2433 // The perm gen is separate but contiguous with the | |
2434 // object heap (and is reserved with it) so subtract it | |
2435 // from the heap size. | |
2436 if (initHeapSize > MaxPermSize) { | |
2437 initHeapSize = initHeapSize - MaxPermSize; | |
2438 } else { | |
2439 warning("AggressiveHeap and MaxPermSize values may conflict"); | |
2440 } | |
2441 | |
2442 if (FLAG_IS_DEFAULT(MaxHeapSize)) { | |
2443 FLAG_SET_CMDLINE(uintx, MaxHeapSize, initHeapSize); | |
1064 | 2444 FLAG_SET_CMDLINE(uintx, InitialHeapSize, initHeapSize); |
0 | 2445 // Currently the minimum size and the initial heap sizes are the same. |
1064 | 2446 set_min_heap_size(initHeapSize); |
0 | 2447 } |
2448 if (FLAG_IS_DEFAULT(NewSize)) { | |
2449 // Make the young generation 3/8ths of the total heap. | |
2450 FLAG_SET_CMDLINE(uintx, NewSize, | |
2451 ((julong)MaxHeapSize / (julong)8) * (julong)3); | |
2452 FLAG_SET_CMDLINE(uintx, MaxNewSize, NewSize); | |
2453 } | |
2454 | |
2455 FLAG_SET_DEFAULT(UseLargePages, true); | |
2456 | |
2457 // Increase some data structure sizes for efficiency | |
2458 FLAG_SET_CMDLINE(uintx, BaseFootPrintEstimate, MaxHeapSize); | |
2459 FLAG_SET_CMDLINE(bool, ResizeTLAB, false); | |
2460 FLAG_SET_CMDLINE(uintx, TLABSize, 256*K); | |
2461 | |
2462 // See the OldPLABSize comment below, but replace 'after promotion' | |
2463 // with 'after copying'. YoungPLABSize is the size of the survivor | |
2464 // space per-gc-thread buffers. The default is 4kw. | |
2465 FLAG_SET_CMDLINE(uintx, YoungPLABSize, 256*K); // Note: this is in words | |
2466 | |
2467 // OldPLABSize is the size of the buffers in the old gen that | |
2468 // UseParallelGC uses to promote live data that doesn't fit in the | |
2469 // survivor spaces. At any given time, there's one for each gc thread. | |
2470 // The default size is 1kw. These buffers are rarely used, since the | |
2471 // survivor spaces are usually big enough. For specjbb, however, there | |
2472 // are occasions when there's lots of live data in the young gen | |
2473 // and we end up promoting some of it. We don't have a definite | |
2474 // explanation for why bumping OldPLABSize helps, but the theory | |
2475 // is that a bigger PLAB results in retaining something like the | |
2476 // original allocation order after promotion, which improves mutator | |
2477 // locality. A minor effect may be that larger PLABs reduce the | |
2478 // number of PLAB allocation events during gc. The value of 8kw | |
2479 // was arrived at by experimenting with specjbb. | |
2480 FLAG_SET_CMDLINE(uintx, OldPLABSize, 8*K); // Note: this is in words | |
2481 | |
2482 // CompilationPolicyChoice=0 causes the server compiler to adopt | |
2483 // a more conservative which-method-do-I-compile policy when one | |
2484 // of the counters maintained by the interpreter trips. The | |
2485 // result is reduced startup time and improved specjbb and | |
2486 // alacrity performance. Zero is the default, but we set it | |
2487 // explicitly here in case the default changes. | |
2488 // See runtime/compilationPolicy.*. | |
2489 FLAG_SET_CMDLINE(intx, CompilationPolicyChoice, 0); | |
2490 | |
2491 // Enable parallel GC and adaptive generation sizing | |
2492 FLAG_SET_CMDLINE(bool, UseParallelGC, true); | |
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2493 FLAG_SET_DEFAULT(ParallelGCThreads, |
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2494 Abstract_VM_Version::parallel_worker_threads()); |
0 | 2495 |
2496 // Encourage steady state memory management | |
2497 FLAG_SET_CMDLINE(uintx, ThresholdTolerance, 100); | |
2498 | |
2499 // This appears to improve mutator locality | |
2500 FLAG_SET_CMDLINE(bool, ScavengeBeforeFullGC, false); | |
2501 | |
2502 // Get around early Solaris scheduling bug | |
2503 // (affinity vs other jobs on system) | |
2504 // but disallow DR and offlining (5008695). | |
2505 FLAG_SET_CMDLINE(bool, BindGCTaskThreadsToCPUs, true); | |
2506 | |
2507 } else if (match_option(option, "-XX:+NeverTenure", &tail)) { | |
2508 // The last option must always win. | |
2509 FLAG_SET_CMDLINE(bool, AlwaysTenure, false); | |
2510 FLAG_SET_CMDLINE(bool, NeverTenure, true); | |
2511 } else if (match_option(option, "-XX:+AlwaysTenure", &tail)) { | |
2512 // The last option must always win. | |
2513 FLAG_SET_CMDLINE(bool, NeverTenure, false); | |
2514 FLAG_SET_CMDLINE(bool, AlwaysTenure, true); | |
2515 } else if (match_option(option, "-XX:+CMSPermGenSweepingEnabled", &tail) || | |
2516 match_option(option, "-XX:-CMSPermGenSweepingEnabled", &tail)) { | |
2517 jio_fprintf(defaultStream::error_stream(), | |
2518 "Please use CMSClassUnloadingEnabled in place of " | |
2519 "CMSPermGenSweepingEnabled in the future\n"); | |
2520 } else if (match_option(option, "-XX:+UseGCTimeLimit", &tail)) { | |
2521 FLAG_SET_CMDLINE(bool, UseGCOverheadLimit, true); | |
2522 jio_fprintf(defaultStream::error_stream(), | |
2523 "Please use -XX:+UseGCOverheadLimit in place of " | |
2524 "-XX:+UseGCTimeLimit in the future\n"); | |
2525 } else if (match_option(option, "-XX:-UseGCTimeLimit", &tail)) { | |
2526 FLAG_SET_CMDLINE(bool, UseGCOverheadLimit, false); | |
2527 jio_fprintf(defaultStream::error_stream(), | |
2528 "Please use -XX:-UseGCOverheadLimit in place of " | |
2529 "-XX:-UseGCTimeLimit in the future\n"); | |
2530 // The TLE options are for compatibility with 1.3 and will be | |
2531 // removed without notice in a future release. These options | |
2532 // are not to be documented. | |
2533 } else if (match_option(option, "-XX:MaxTLERatio=", &tail)) { | |
2534 // No longer used. | |
2535 } else if (match_option(option, "-XX:+ResizeTLE", &tail)) { | |
2536 FLAG_SET_CMDLINE(bool, ResizeTLAB, true); | |
2537 } else if (match_option(option, "-XX:-ResizeTLE", &tail)) { | |
2538 FLAG_SET_CMDLINE(bool, ResizeTLAB, false); | |
2539 } else if (match_option(option, "-XX:+PrintTLE", &tail)) { | |
2540 FLAG_SET_CMDLINE(bool, PrintTLAB, true); | |
2541 } else if (match_option(option, "-XX:-PrintTLE", &tail)) { | |
2542 FLAG_SET_CMDLINE(bool, PrintTLAB, false); | |
2543 } else if (match_option(option, "-XX:TLEFragmentationRatio=", &tail)) { | |
2544 // No longer used. | |
2545 } else if (match_option(option, "-XX:TLESize=", &tail)) { | |
489
2494ab195856
6653214: MemoryPoolMXBean.setUsageThreshold() does not support large heap sizes.
swamyv
parents:
483
diff
changeset
|
2546 julong long_tlab_size = 0; |
0 | 2547 ArgsRange errcode = parse_memory_size(tail, &long_tlab_size, 1); |
2548 if (errcode != arg_in_range) { | |
2549 jio_fprintf(defaultStream::error_stream(), | |
2550 "Invalid TLAB size: %s\n", option->optionString); | |
2551 describe_range_error(errcode); | |
2552 return JNI_EINVAL; | |
2553 } | |
2554 FLAG_SET_CMDLINE(uintx, TLABSize, long_tlab_size); | |
2555 } else if (match_option(option, "-XX:TLEThreadRatio=", &tail)) { | |
2556 // No longer used. | |
2557 } else if (match_option(option, "-XX:+UseTLE", &tail)) { | |
2558 FLAG_SET_CMDLINE(bool, UseTLAB, true); | |
2559 } else if (match_option(option, "-XX:-UseTLE", &tail)) { | |
2560 FLAG_SET_CMDLINE(bool, UseTLAB, false); | |
2561 SOLARIS_ONLY( | |
2562 } else if (match_option(option, "-XX:+UsePermISM", &tail)) { | |
2563 warning("-XX:+UsePermISM is obsolete."); | |
2564 FLAG_SET_CMDLINE(bool, UseISM, true); | |
2565 } else if (match_option(option, "-XX:-UsePermISM", &tail)) { | |
2566 FLAG_SET_CMDLINE(bool, UseISM, false); | |
2567 ) | |
2568 } else if (match_option(option, "-XX:+DisplayVMOutputToStderr", &tail)) { | |
2569 FLAG_SET_CMDLINE(bool, DisplayVMOutputToStdout, false); | |
2570 FLAG_SET_CMDLINE(bool, DisplayVMOutputToStderr, true); | |
2571 } else if (match_option(option, "-XX:+DisplayVMOutputToStdout", &tail)) { | |
2572 FLAG_SET_CMDLINE(bool, DisplayVMOutputToStderr, false); | |
2573 FLAG_SET_CMDLINE(bool, DisplayVMOutputToStdout, true); | |
2574 } else if (match_option(option, "-XX:+ExtendedDTraceProbes", &tail)) { | |
2575 #ifdef SOLARIS | |
2576 FLAG_SET_CMDLINE(bool, ExtendedDTraceProbes, true); | |
2577 FLAG_SET_CMDLINE(bool, DTraceMethodProbes, true); | |
2578 FLAG_SET_CMDLINE(bool, DTraceAllocProbes, true); | |
2579 FLAG_SET_CMDLINE(bool, DTraceMonitorProbes, true); | |
2580 #else // ndef SOLARIS | |
2581 jio_fprintf(defaultStream::error_stream(), | |
2582 "ExtendedDTraceProbes flag is only applicable on Solaris\n"); | |
2583 return JNI_EINVAL; | |
2584 #endif // ndef SOLARIS | |
2585 #ifdef ASSERT | |
1145
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1074
diff
changeset
|
2586 } else if (match_option(option, "-XX:+FullGCALot", &tail)) { |
0 | 2587 FLAG_SET_CMDLINE(bool, FullGCALot, true); |
2588 // disable scavenge before parallel mark-compact | |
2589 FLAG_SET_CMDLINE(bool, ScavengeBeforeFullGC, false); | |
2590 #endif | |
1145
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1074
diff
changeset
|
2591 } else if (match_option(option, "-XX:CMSParPromoteBlocksToClaim=", &tail)) { |
0 | 2592 julong cms_blocks_to_claim = (julong)atol(tail); |
2593 FLAG_SET_CMDLINE(uintx, CMSParPromoteBlocksToClaim, cms_blocks_to_claim); | |
2594 jio_fprintf(defaultStream::error_stream(), | |
1145
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1074
diff
changeset
|
2595 "Please use -XX:OldPLABSize in place of " |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1074
diff
changeset
|
2596 "-XX:CMSParPromoteBlocksToClaim in the future\n"); |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1074
diff
changeset
|
2597 } else if (match_option(option, "-XX:ParCMSPromoteBlocksToClaim=", &tail)) { |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1074
diff
changeset
|
2598 julong cms_blocks_to_claim = (julong)atol(tail); |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1074
diff
changeset
|
2599 FLAG_SET_CMDLINE(uintx, CMSParPromoteBlocksToClaim, cms_blocks_to_claim); |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1074
diff
changeset
|
2600 jio_fprintf(defaultStream::error_stream(), |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1074
diff
changeset
|
2601 "Please use -XX:OldPLABSize in place of " |
0 | 2602 "-XX:ParCMSPromoteBlocksToClaim in the future\n"); |
1145
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1074
diff
changeset
|
2603 } else if (match_option(option, "-XX:ParallelGCOldGenAllocBufferSize=", &tail)) { |
489
2494ab195856
6653214: MemoryPoolMXBean.setUsageThreshold() does not support large heap sizes.
swamyv
parents:
483
diff
changeset
|
2604 julong old_plab_size = 0; |
0 | 2605 ArgsRange errcode = parse_memory_size(tail, &old_plab_size, 1); |
2606 if (errcode != arg_in_range) { | |
2607 jio_fprintf(defaultStream::error_stream(), | |
2608 "Invalid old PLAB size: %s\n", option->optionString); | |
2609 describe_range_error(errcode); | |
2610 return JNI_EINVAL; | |
2611 } | |
489
2494ab195856
6653214: MemoryPoolMXBean.setUsageThreshold() does not support large heap sizes.
swamyv
parents:
483
diff
changeset
|
2612 FLAG_SET_CMDLINE(uintx, OldPLABSize, old_plab_size); |
0 | 2613 jio_fprintf(defaultStream::error_stream(), |
2614 "Please use -XX:OldPLABSize in place of " | |
2615 "-XX:ParallelGCOldGenAllocBufferSize in the future\n"); | |
1145
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1074
diff
changeset
|
2616 } else if (match_option(option, "-XX:ParallelGCToSpaceAllocBufferSize=", &tail)) { |
489
2494ab195856
6653214: MemoryPoolMXBean.setUsageThreshold() does not support large heap sizes.
swamyv
parents:
483
diff
changeset
|
2617 julong young_plab_size = 0; |
0 | 2618 ArgsRange errcode = parse_memory_size(tail, &young_plab_size, 1); |
2619 if (errcode != arg_in_range) { | |
2620 jio_fprintf(defaultStream::error_stream(), | |
2621 "Invalid young PLAB size: %s\n", option->optionString); | |
2622 describe_range_error(errcode); | |
2623 return JNI_EINVAL; | |
2624 } | |
489
2494ab195856
6653214: MemoryPoolMXBean.setUsageThreshold() does not support large heap sizes.
swamyv
parents:
483
diff
changeset
|
2625 FLAG_SET_CMDLINE(uintx, YoungPLABSize, young_plab_size); |
0 | 2626 jio_fprintf(defaultStream::error_stream(), |
2627 "Please use -XX:YoungPLABSize in place of " | |
2628 "-XX:ParallelGCToSpaceAllocBufferSize in the future\n"); | |
1284 | 2629 } else if (match_option(option, "-XX:CMSMarkStackSize=", &tail) || |
2630 match_option(option, "-XX:G1MarkStackSize=", &tail)) { | |
2631 julong stack_size = 0; | |
2632 ArgsRange errcode = parse_memory_size(tail, &stack_size, 1); | |
2633 if (errcode != arg_in_range) { | |
2634 jio_fprintf(defaultStream::error_stream(), | |
2635 "Invalid mark stack size: %s\n", option->optionString); | |
2636 describe_range_error(errcode); | |
2637 return JNI_EINVAL; | |
2638 } | |
2639 FLAG_SET_CMDLINE(uintx, MarkStackSize, stack_size); | |
2640 } else if (match_option(option, "-XX:CMSMarkStackSizeMax=", &tail)) { | |
2641 julong max_stack_size = 0; | |
2642 ArgsRange errcode = parse_memory_size(tail, &max_stack_size, 1); | |
2643 if (errcode != arg_in_range) { | |
2644 jio_fprintf(defaultStream::error_stream(), | |
2645 "Invalid maximum mark stack size: %s\n", | |
2646 option->optionString); | |
2647 describe_range_error(errcode); | |
2648 return JNI_EINVAL; | |
2649 } | |
2650 FLAG_SET_CMDLINE(uintx, MarkStackSizeMax, max_stack_size); | |
2651 } else if (match_option(option, "-XX:ParallelMarkingThreads=", &tail) || | |
2652 match_option(option, "-XX:ParallelCMSThreads=", &tail)) { | |
2653 uintx conc_threads = 0; | |
2654 if (!parse_uintx(tail, &conc_threads, 1)) { | |
2655 jio_fprintf(defaultStream::error_stream(), | |
2656 "Invalid concurrent threads: %s\n", option->optionString); | |
2657 return JNI_EINVAL; | |
2658 } | |
2659 FLAG_SET_CMDLINE(uintx, ConcGCThreads, conc_threads); | |
1145
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1074
diff
changeset
|
2660 } else if (match_option(option, "-XX:", &tail)) { // -XX:xxxx |
0 | 2661 // Skip -XX:Flags= since that case has already been handled |
2662 if (strncmp(tail, "Flags=", strlen("Flags=")) != 0) { | |
2663 if (!process_argument(tail, args->ignoreUnrecognized, origin)) { | |
2664 return JNI_EINVAL; | |
2665 } | |
2666 } | |
1483
ba37b9335e1e
New option "-graal" that sets up the correct boot class path and C1X options using only the two environment variables MAXINE and GRAAL.
Thomas Wuerthinger <wuerthinger@ssw.jku.at>
parents:
1437
diff
changeset
|
2667 } else if (match_option(option, "-graal", &tail)) { |
ba37b9335e1e
New option "-graal" that sets up the correct boot class path and C1X options using only the two environment variables MAXINE and GRAAL.
Thomas Wuerthinger <wuerthinger@ssw.jku.at>
parents:
1437
diff
changeset
|
2668 if (PrintVMOptions) { |
ba37b9335e1e
New option "-graal" that sets up the correct boot class path and C1X options using only the two environment variables MAXINE and GRAAL.
Thomas Wuerthinger <wuerthinger@ssw.jku.at>
parents:
1437
diff
changeset
|
2669 tty->print("Running Graal VM... "); |
ba37b9335e1e
New option "-graal" that sets up the correct boot class path and C1X options using only the two environment variables MAXINE and GRAAL.
Thomas Wuerthinger <wuerthinger@ssw.jku.at>
parents:
1437
diff
changeset
|
2670 } |
ba37b9335e1e
New option "-graal" that sets up the correct boot class path and C1X options using only the two environment variables MAXINE and GRAAL.
Thomas Wuerthinger <wuerthinger@ssw.jku.at>
parents:
1437
diff
changeset
|
2671 UseC1X = true; |
ba37b9335e1e
New option "-graal" that sets up the correct boot class path and C1X options using only the two environment variables MAXINE and GRAAL.
Thomas Wuerthinger <wuerthinger@ssw.jku.at>
parents:
1437
diff
changeset
|
2672 BootstrapC1X = true; |
ba37b9335e1e
New option "-graal" that sets up the correct boot class path and C1X options using only the two environment variables MAXINE and GRAAL.
Thomas Wuerthinger <wuerthinger@ssw.jku.at>
parents:
1437
diff
changeset
|
2673 const int BUFFER_SIZE = 1024; |
ba37b9335e1e
New option "-graal" that sets up the correct boot class path and C1X options using only the two environment variables MAXINE and GRAAL.
Thomas Wuerthinger <wuerthinger@ssw.jku.at>
parents:
1437
diff
changeset
|
2674 char maxine_dir[BUFFER_SIZE]; |
ba37b9335e1e
New option "-graal" that sets up the correct boot class path and C1X options using only the two environment variables MAXINE and GRAAL.
Thomas Wuerthinger <wuerthinger@ssw.jku.at>
parents:
1437
diff
changeset
|
2675 char graal_dir[BUFFER_SIZE]; |
ba37b9335e1e
New option "-graal" that sets up the correct boot class path and C1X options using only the two environment variables MAXINE and GRAAL.
Thomas Wuerthinger <wuerthinger@ssw.jku.at>
parents:
1437
diff
changeset
|
2676 char temp[BUFFER_SIZE]; |
ba37b9335e1e
New option "-graal" that sets up the correct boot class path and C1X options using only the two environment variables MAXINE and GRAAL.
Thomas Wuerthinger <wuerthinger@ssw.jku.at>
parents:
1437
diff
changeset
|
2677 if (!os::getenv("MAXINE", maxine_dir, sizeof(maxine_dir))) { |
ba37b9335e1e
New option "-graal" that sets up the correct boot class path and C1X options using only the two environment variables MAXINE and GRAAL.
Thomas Wuerthinger <wuerthinger@ssw.jku.at>
parents:
1437
diff
changeset
|
2678 fatal("Must set MAXINE environment variable to a Maxine project directory."); |
ba37b9335e1e
New option "-graal" that sets up the correct boot class path and C1X options using only the two environment variables MAXINE and GRAAL.
Thomas Wuerthinger <wuerthinger@ssw.jku.at>
parents:
1437
diff
changeset
|
2679 } |
ba37b9335e1e
New option "-graal" that sets up the correct boot class path and C1X options using only the two environment variables MAXINE and GRAAL.
Thomas Wuerthinger <wuerthinger@ssw.jku.at>
parents:
1437
diff
changeset
|
2680 if (PrintVMOptions) tty->print("MAXINE=%s", maxine_dir); |
ba37b9335e1e
New option "-graal" that sets up the correct boot class path and C1X options using only the two environment variables MAXINE and GRAAL.
Thomas Wuerthinger <wuerthinger@ssw.jku.at>
parents:
1437
diff
changeset
|
2681 if (!os::getenv("GRAAL", graal_dir, sizeof(graal_dir))) { |
ba37b9335e1e
New option "-graal" that sets up the correct boot class path and C1X options using only the two environment variables MAXINE and GRAAL.
Thomas Wuerthinger <wuerthinger@ssw.jku.at>
parents:
1437
diff
changeset
|
2682 fatal("Must set GRAAL environment variable to a Graal project directory."); |
ba37b9335e1e
New option "-graal" that sets up the correct boot class path and C1X options using only the two environment variables MAXINE and GRAAL.
Thomas Wuerthinger <wuerthinger@ssw.jku.at>
parents:
1437
diff
changeset
|
2683 } |
ba37b9335e1e
New option "-graal" that sets up the correct boot class path and C1X options using only the two environment variables MAXINE and GRAAL.
Thomas Wuerthinger <wuerthinger@ssw.jku.at>
parents:
1437
diff
changeset
|
2684 if (PrintVMOptions) tty->print_cr(" GRAAL=%s", graal_dir); |
2689
8fcf5179aafd
Sync with renames in Maxine code base.
Doug Simon <doug.simon@oracle.com>
parents:
2677
diff
changeset
|
2685 sprintf(temp, "%s/com.oracle.max.cri/bin", maxine_dir); |
1483
ba37b9335e1e
New option "-graal" that sets up the correct boot class path and C1X options using only the two environment variables MAXINE and GRAAL.
Thomas Wuerthinger <wuerthinger@ssw.jku.at>
parents:
1437
diff
changeset
|
2686 scp_p->add_prefix(temp); |
2689
8fcf5179aafd
Sync with renames in Maxine code base.
Doug Simon <doug.simon@oracle.com>
parents:
2677
diff
changeset
|
2687 sprintf(temp, "%s/com.oracle.max.base/bin", maxine_dir); |
1483
ba37b9335e1e
New option "-graal" that sets up the correct boot class path and C1X options using only the two environment variables MAXINE and GRAAL.
Thomas Wuerthinger <wuerthinger@ssw.jku.at>
parents:
1437
diff
changeset
|
2688 scp_p->add_prefix(temp); |
2689
8fcf5179aafd
Sync with renames in Maxine code base.
Doug Simon <doug.simon@oracle.com>
parents:
2677
diff
changeset
|
2689 sprintf(temp, "%s/com.oracle.max.asmdis/bin", maxine_dir); |
1483
ba37b9335e1e
New option "-graal" that sets up the correct boot class path and C1X options using only the two environment variables MAXINE and GRAAL.
Thomas Wuerthinger <wuerthinger@ssw.jku.at>
parents:
1437
diff
changeset
|
2690 scp_p->add_prefix(temp); |
2677
0ea5f12e873a
use com.oracle.max.asm project for assembler
Christian.Wimmer@Oracle.com
parents:
2616
diff
changeset
|
2691 sprintf(temp, "%s/com.oracle.max.asm/bin", maxine_dir); |
0ea5f12e873a
use com.oracle.max.asm project for assembler
Christian.Wimmer@Oracle.com
parents:
2616
diff
changeset
|
2692 scp_p->add_prefix(temp); |
2511
62feb6fd69a9
Adjusted classpaths such that new graalvm repo structure works.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
2491
diff
changeset
|
2693 sprintf(temp, "%s/graal/GraalCompiler/bin", graal_dir); |
62feb6fd69a9
Adjusted classpaths such that new graalvm repo structure works.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
2491
diff
changeset
|
2694 scp_p->add_prefix(temp); |
62feb6fd69a9
Adjusted classpaths such that new graalvm repo structure works.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
2491
diff
changeset
|
2695 sprintf(temp, "%s/graal/GraalRuntime/bin", graal_dir); |
1483
ba37b9335e1e
New option "-graal" that sets up the correct boot class path and C1X options using only the two environment variables MAXINE and GRAAL.
Thomas Wuerthinger <wuerthinger@ssw.jku.at>
parents:
1437
diff
changeset
|
2696 scp_p->add_prefix(temp); |
2581
4a36a0bd6d18
added GraalGraph to classpath, Node as superclass of Value
Lukas Stadler <lukas.stadler@jku.at>
parents:
2511
diff
changeset
|
2697 sprintf(temp, "%s/graal/GraalGraph/bin", graal_dir); |
4a36a0bd6d18
added GraalGraph to classpath, Node as superclass of Value
Lukas Stadler <lukas.stadler@jku.at>
parents:
2511
diff
changeset
|
2698 scp_p->add_prefix(temp); |
2616
3558ca7088c0
FrameState and Graphviz changes:
Lukas Stadler <lukas.stadler@jku.at>
parents:
2581
diff
changeset
|
2699 sprintf(temp, "%s/graal/GraalGraphviz/bin", graal_dir); |
3558ca7088c0
FrameState and Graphviz changes:
Lukas Stadler <lukas.stadler@jku.at>
parents:
2581
diff
changeset
|
2700 scp_p->add_prefix(temp); |
1483
ba37b9335e1e
New option "-graal" that sets up the correct boot class path and C1X options using only the two environment variables MAXINE and GRAAL.
Thomas Wuerthinger <wuerthinger@ssw.jku.at>
parents:
1437
diff
changeset
|
2701 *scp_assembly_required_p = true; |
1437
9e5e83ca2259
Enabled -C1X:OPTIONS when running HotSpot/C1X. Enabled checkstyle for the HotSpotVM Java project.
Thomas Wuerthinger <wuerthinger@ssw.jku.at>
parents:
1356
diff
changeset
|
2702 } else if (match_option(option, "-C1X:", &tail)) { // -C1X:xxxx |
9e5e83ca2259
Enabled -C1X:OPTIONS when running HotSpot/C1X. Enabled checkstyle for the HotSpotVM Java project.
Thomas Wuerthinger <wuerthinger@ssw.jku.at>
parents:
1356
diff
changeset
|
2703 // Option for the C1X compiler. |
9e5e83ca2259
Enabled -C1X:OPTIONS when running HotSpot/C1X. Enabled checkstyle for the HotSpotVM Java project.
Thomas Wuerthinger <wuerthinger@ssw.jku.at>
parents:
1356
diff
changeset
|
2704 if (PrintVMOptions) { |
9e5e83ca2259
Enabled -C1X:OPTIONS when running HotSpot/C1X. Enabled checkstyle for the HotSpotVM Java project.
Thomas Wuerthinger <wuerthinger@ssw.jku.at>
parents:
1356
diff
changeset
|
2705 tty->print_cr("C1X option %s", tail); |
9e5e83ca2259
Enabled -C1X:OPTIONS when running HotSpot/C1X. Enabled checkstyle for the HotSpotVM Java project.
Thomas Wuerthinger <wuerthinger@ssw.jku.at>
parents:
1356
diff
changeset
|
2706 } |
9e5e83ca2259
Enabled -C1X:OPTIONS when running HotSpot/C1X. Enabled checkstyle for the HotSpotVM Java project.
Thomas Wuerthinger <wuerthinger@ssw.jku.at>
parents:
1356
diff
changeset
|
2707 Arguments::add_c1x_arg(tail); |
9e5e83ca2259
Enabled -C1X:OPTIONS when running HotSpot/C1X. Enabled checkstyle for the HotSpotVM Java project.
Thomas Wuerthinger <wuerthinger@ssw.jku.at>
parents:
1356
diff
changeset
|
2708 |
0 | 2709 // Unknown option |
2710 } else if (is_bad_option(option, args->ignoreUnrecognized)) { | |
2711 return JNI_ERR; | |
2712 } | |
2713 } | |
449
171e581e8161
6554406: Change switch UseVMInterruptibleIO default to false (sol)
xlu
parents:
420
diff
changeset
|
2714 // Change the default value for flags which have different default values |
171e581e8161
6554406: Change switch UseVMInterruptibleIO default to false (sol)
xlu
parents:
420
diff
changeset
|
2715 // when working with older JDKs. |
171e581e8161
6554406: Change switch UseVMInterruptibleIO default to false (sol)
xlu
parents:
420
diff
changeset
|
2716 if (JDK_Version::current().compare_major(6) <= 0 && |
171e581e8161
6554406: Change switch UseVMInterruptibleIO default to false (sol)
xlu
parents:
420
diff
changeset
|
2717 FLAG_IS_DEFAULT(UseVMInterruptibleIO)) { |
171e581e8161
6554406: Change switch UseVMInterruptibleIO default to false (sol)
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|
2718 FLAG_SET_DEFAULT(UseVMInterruptibleIO, true); |
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6554406: Change switch UseVMInterruptibleIO default to false (sol)
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diff
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|
2719 } |
1679
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6888526: Linux getCurrentThreadCpuTime is drastically slower than Windows
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diff
changeset
|
2720 #ifdef LINUX |
3d90023429ec
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diff
changeset
|
2721 if (JDK_Version::current().compare_major(6) <= 0 && |
3d90023429ec
6888526: Linux getCurrentThreadCpuTime is drastically slower than Windows
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|
2722 FLAG_IS_DEFAULT(UseLinuxPosixThreadCPUClocks)) { |
3d90023429ec
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diff
changeset
|
2723 FLAG_SET_DEFAULT(UseLinuxPosixThreadCPUClocks, false); |
3d90023429ec
6888526: Linux getCurrentThreadCpuTime is drastically slower than Windows
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1628
diff
changeset
|
2724 } |
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1628
diff
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|
2725 #endif // LINUX |
0 | 2726 return JNI_OK; |
2727 } | |
2728 | |
2729 jint Arguments::finalize_vm_init_args(SysClassPath* scp_p, bool scp_assembly_required) { | |
2730 // This must be done after all -D arguments have been processed. | |
2731 scp_p->expand_endorsed(); | |
2732 | |
2733 if (scp_assembly_required || scp_p->get_endorsed() != NULL) { | |
2734 // Assemble the bootclasspath elements into the final path. | |
2735 Arguments::set_sysclasspath(scp_p->combined_path()); | |
2736 } | |
2737 | |
2738 // This must be done after all arguments have been processed. | |
2739 // java_compiler() true means set to "NONE" or empty. | |
2740 if (java_compiler() && !xdebug_mode()) { | |
2741 // For backwards compatibility, we switch to interpreted mode if | |
2742 // -Djava.compiler="NONE" or "" is specified AND "-Xdebug" was | |
2743 // not specified. | |
2744 set_mode_flags(_int); | |
2745 } | |
2746 if (CompileThreshold == 0) { | |
2747 set_mode_flags(_int); | |
2748 } | |
2749 | |
2750 #ifndef COMPILER2 | |
2751 // Don't degrade server performance for footprint | |
2752 if (FLAG_IS_DEFAULT(UseLargePages) && | |
2753 MaxHeapSize < LargePageHeapSizeThreshold) { | |
2754 // No need for large granularity pages w/small heaps. | |
2755 // Note that large pages are enabled/disabled for both the | |
2756 // Java heap and the code cache. | |
2757 FLAG_SET_DEFAULT(UseLargePages, false); | |
2758 SOLARIS_ONLY(FLAG_SET_DEFAULT(UseMPSS, false)); | |
2759 SOLARIS_ONLY(FLAG_SET_DEFAULT(UseISM, false)); | |
2760 } | |
342
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6711316: Open source the Garbage-First garbage collector
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|
2761 |
1251
576e77447e3c
6923002: assert(false,"this call site should not be polymorphic")
kvn
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1188
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changeset
|
2762 // Tiered compilation is undefined with C1. |
576e77447e3c
6923002: assert(false,"this call site should not be polymorphic")
kvn
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diff
changeset
|
2763 TieredCompilation = false; |
0 | 2764 #else |
2765 if (!FLAG_IS_DEFAULT(OptoLoopAlignment) && FLAG_IS_DEFAULT(MaxLoopPad)) { | |
2766 FLAG_SET_DEFAULT(MaxLoopPad, OptoLoopAlignment-1); | |
2767 } | |
2768 #endif | |
2769 | |
1681
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
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1679
diff
changeset
|
2770 // If we are running in a headless jre, force java.awt.headless property |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
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parents:
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changeset
|
2771 // to be true unless the property has already been set. |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
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parents:
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changeset
|
2772 // Also allow the OS environment variable JAVA_AWT_HEADLESS to set headless state. |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
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1679
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changeset
|
2773 if (os::is_headless_jre()) { |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
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changeset
|
2774 const char* headless = Arguments::get_property("java.awt.headless"); |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2775 if (headless == NULL) { |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2776 char envbuffer[128]; |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2777 if (!os::getenv("JAVA_AWT_HEADLESS", envbuffer, sizeof(envbuffer))) { |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
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diff
changeset
|
2778 if (!add_property("java.awt.headless=true")) { |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
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changeset
|
2779 return JNI_ENOMEM; |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2780 } |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2781 } else { |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
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diff
changeset
|
2782 char buffer[256]; |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2783 strcpy(buffer, "java.awt.headless="); |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
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parents:
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diff
changeset
|
2784 strcat(buffer, envbuffer); |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
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parents:
1679
diff
changeset
|
2785 if (!add_property(buffer)) { |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
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parents:
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diff
changeset
|
2786 return JNI_ENOMEM; |
126ea7725993
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parents:
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diff
changeset
|
2787 } |
126ea7725993
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bobv
parents:
1679
diff
changeset
|
2788 } |
126ea7725993
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bobv
parents:
1679
diff
changeset
|
2789 } |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2790 } |
126ea7725993
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diff
changeset
|
2791 |
0 | 2792 if (!check_vm_args_consistency()) { |
2793 return JNI_ERR; | |
2794 } | |
2795 | |
2796 return JNI_OK; | |
2797 } | |
2798 | |
2799 jint Arguments::parse_java_options_environment_variable(SysClassPath* scp_p, bool* scp_assembly_required_p) { | |
2800 return parse_options_environment_variable("_JAVA_OPTIONS", scp_p, | |
2801 scp_assembly_required_p); | |
2802 } | |
2803 | |
2804 jint Arguments::parse_java_tool_options_environment_variable(SysClassPath* scp_p, bool* scp_assembly_required_p) { | |
2805 return parse_options_environment_variable("JAVA_TOOL_OPTIONS", scp_p, | |
2806 scp_assembly_required_p); | |
2807 } | |
2808 | |
2809 jint Arguments::parse_options_environment_variable(const char* name, SysClassPath* scp_p, bool* scp_assembly_required_p) { | |
2810 const int N_MAX_OPTIONS = 64; | |
2811 const int OPTION_BUFFER_SIZE = 1024; | |
2812 char buffer[OPTION_BUFFER_SIZE]; | |
2813 | |
2814 // The variable will be ignored if it exceeds the length of the buffer. | |
2815 // Don't check this variable if user has special privileges | |
2816 // (e.g. unix su command). | |
2817 if (os::getenv(name, buffer, sizeof(buffer)) && | |
2818 !os::have_special_privileges()) { | |
2819 JavaVMOption options[N_MAX_OPTIONS]; // Construct option array | |
2820 jio_fprintf(defaultStream::error_stream(), | |
2821 "Picked up %s: %s\n", name, buffer); | |
2822 char* rd = buffer; // pointer to the input string (rd) | |
2823 int i; | |
2824 for (i = 0; i < N_MAX_OPTIONS;) { // repeat for all options in the input string | |
2825 while (isspace(*rd)) rd++; // skip whitespace | |
2826 if (*rd == 0) break; // we re done when the input string is read completely | |
2827 | |
2828 // The output, option string, overwrites the input string. | |
2829 // Because of quoting, the pointer to the option string (wrt) may lag the pointer to | |
2830 // input string (rd). | |
2831 char* wrt = rd; | |
2832 | |
2833 options[i++].optionString = wrt; // Fill in option | |
2834 while (*rd != 0 && !isspace(*rd)) { // unquoted strings terminate with a space or NULL | |
2835 if (*rd == '\'' || *rd == '"') { // handle a quoted string | |
2836 int quote = *rd; // matching quote to look for | |
2837 rd++; // don't copy open quote | |
2838 while (*rd != quote) { // include everything (even spaces) up until quote | |
2839 if (*rd == 0) { // string termination means unmatched string | |
2840 jio_fprintf(defaultStream::error_stream(), | |
2841 "Unmatched quote in %s\n", name); | |
2842 return JNI_ERR; | |
2843 } | |
2844 *wrt++ = *rd++; // copy to option string | |
2845 } | |
2846 rd++; // don't copy close quote | |
2847 } else { | |
2848 *wrt++ = *rd++; // copy to option string | |
2849 } | |
2850 } | |
2851 // Need to check if we're done before writing a NULL, | |
2852 // because the write could be to the byte that rd is pointing to. | |
2853 if (*rd++ == 0) { | |
2854 *wrt = 0; | |
2855 break; | |
2856 } | |
2857 *wrt = 0; // Zero terminate option | |
2858 } | |
2859 // Construct JavaVMInitArgs structure and parse as if it was part of the command line | |
2860 JavaVMInitArgs vm_args; | |
2861 vm_args.version = JNI_VERSION_1_2; | |
2862 vm_args.options = options; | |
2863 vm_args.nOptions = i; | |
564 | 2864 vm_args.ignoreUnrecognized = IgnoreUnrecognizedVMOptions; |
0 | 2865 |
2866 if (PrintVMOptions) { | |
2867 const char* tail; | |
2868 for (int i = 0; i < vm_args.nOptions; i++) { | |
2869 const JavaVMOption *option = vm_args.options + i; | |
2870 if (match_option(option, "-XX:", &tail)) { | |
2871 logOption(tail); | |
2872 } | |
2873 } | |
2874 } | |
2875 | |
2876 return(parse_each_vm_init_arg(&vm_args, scp_p, scp_assembly_required_p, ENVIRON_VAR)); | |
2877 } | |
2878 return JNI_OK; | |
2879 } | |
2880 | |
2362
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
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2302
diff
changeset
|
2881 void Arguments::set_shared_spaces_flags() { |
2378 | 2882 const bool must_share = DumpSharedSpaces || RequireSharedSpaces; |
2883 const bool might_share = must_share || UseSharedSpaces; | |
2884 | |
2885 // The string table is part of the shared archive so the size must match. | |
2886 if (!FLAG_IS_DEFAULT(StringTableSize)) { | |
2887 // Disable sharing. | |
2888 if (must_share) { | |
2889 warning("disabling shared archive %s because of non-default " | |
2890 "StringTableSize", DumpSharedSpaces ? "creation" : "use"); | |
2891 } | |
2892 if (might_share) { | |
2893 FLAG_SET_DEFAULT(DumpSharedSpaces, false); | |
2894 FLAG_SET_DEFAULT(RequireSharedSpaces, false); | |
2895 FLAG_SET_DEFAULT(UseSharedSpaces, false); | |
2896 } | |
2897 return; | |
2898 } | |
2899 | |
2362
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2900 // Check whether class data sharing settings conflict with GC, compressed oops |
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2901 // or page size, and fix them up. Explicit sharing options override other |
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2902 // settings. |
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2903 const bool cannot_share = UseConcMarkSweepGC || CMSIncrementalMode || |
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2904 UseG1GC || UseParNewGC || UseParallelGC || UseParallelOldGC || |
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2905 UseCompressedOops || UseLargePages && FLAG_IS_CMDLINE(UseLargePages); |
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2906 if (cannot_share) { |
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2907 if (must_share) { |
2378 | 2908 warning("selecting serial gc and disabling large pages %s" |
2909 "because of %s", "" LP64_ONLY("and compressed oops "), | |
2910 DumpSharedSpaces ? "-Xshare:dump" : "-Xshare:on"); | |
2911 force_serial_gc(); | |
2912 FLAG_SET_CMDLINE(bool, UseLargePages, false); | |
2913 LP64_ONLY(FLAG_SET_CMDLINE(bool, UseCompressedOops, false)); | |
2362
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2914 } else { |
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2915 if (UseSharedSpaces && Verbose) { |
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2916 warning("turning off use of shared archive because of " |
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2917 "choice of garbage collector or large pages"); |
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2918 } |
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2919 no_shared_spaces(); |
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2920 } |
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2921 } else if (UseLargePages && might_share) { |
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2922 // 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
|
2923 // there may not even be a shared archive to use. |
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2924 FLAG_SET_DEFAULT(UseLargePages, false); |
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2925 } |
a2c2eac1ca62
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diff
changeset
|
2926 } |
1891
9de67bf4244d
6996136: VM crash in src/share/vm/runtime/virtualspace.cpp:424
iveresov
parents:
1890
diff
changeset
|
2927 |
0 | 2928 // Parse entry point called from JNI_CreateJavaVM |
2929 | |
2930 jint Arguments::parse(const JavaVMInitArgs* args) { | |
2931 | |
2932 // Sharing support | |
2933 // Construct the path to the archive | |
2934 char jvm_path[JVM_MAXPATHLEN]; | |
2935 os::jvm_path(jvm_path, sizeof(jvm_path)); | |
2936 #ifdef TIERED | |
2937 if (strstr(jvm_path, "client") != NULL) { | |
2938 force_client_mode = true; | |
2939 } | |
2940 #endif // TIERED | |
2941 char *end = strrchr(jvm_path, *os::file_separator()); | |
2942 if (end != NULL) *end = '\0'; | |
2943 char *shared_archive_path = NEW_C_HEAP_ARRAY(char, strlen(jvm_path) + | |
2944 strlen(os::file_separator()) + 20); | |
2945 if (shared_archive_path == NULL) return JNI_ENOMEM; | |
2946 strcpy(shared_archive_path, jvm_path); | |
2947 strcat(shared_archive_path, os::file_separator()); | |
2948 strcat(shared_archive_path, "classes"); | |
2949 DEBUG_ONLY(strcat(shared_archive_path, "_g");) | |
2950 strcat(shared_archive_path, ".jsa"); | |
2951 SharedArchivePath = shared_archive_path; | |
2952 | |
2953 // Remaining part of option string | |
2954 const char* tail; | |
2955 | |
2956 // If flag "-XX:Flags=flags-file" is used it will be the first option to be processed. | |
2957 bool settings_file_specified = false; | |
564 | 2958 const char* flags_file; |
0 | 2959 int index; |
2960 for (index = 0; index < args->nOptions; index++) { | |
2961 const JavaVMOption *option = args->options + index; | |
2962 if (match_option(option, "-XX:Flags=", &tail)) { | |
564 | 2963 flags_file = tail; |
0 | 2964 settings_file_specified = true; |
2965 } | |
2966 if (match_option(option, "-XX:+PrintVMOptions", &tail)) { | |
2967 PrintVMOptions = true; | |
2968 } | |
253
b0fe4deeb9fb
6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.")
kvn
parents:
196
diff
changeset
|
2969 if (match_option(option, "-XX:-PrintVMOptions", &tail)) { |
b0fe4deeb9fb
6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.")
kvn
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diff
changeset
|
2970 PrintVMOptions = false; |
b0fe4deeb9fb
6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.")
kvn
parents:
196
diff
changeset
|
2971 } |
564 | 2972 if (match_option(option, "-XX:+IgnoreUnrecognizedVMOptions", &tail)) { |
2973 IgnoreUnrecognizedVMOptions = true; | |
2974 } | |
2975 if (match_option(option, "-XX:-IgnoreUnrecognizedVMOptions", &tail)) { | |
2976 IgnoreUnrecognizedVMOptions = false; | |
2977 } | |
1150 | 2978 if (match_option(option, "-XX:+PrintFlagsInitial", &tail)) { |
2979 CommandLineFlags::printFlags(); | |
2980 vm_exit(0); | |
2981 } | |
1768
6ee479178066
6979444: add command line option to print command line flags descriptions
ikrylov
parents:
1745
diff
changeset
|
2982 |
6ee479178066
6979444: add command line option to print command line flags descriptions
ikrylov
parents:
1745
diff
changeset
|
2983 #ifndef PRODUCT |
6ee479178066
6979444: add command line option to print command line flags descriptions
ikrylov
parents:
1745
diff
changeset
|
2984 if (match_option(option, "-XX:+PrintFlagsWithComments", &tail)) { |
6ee479178066
6979444: add command line option to print command line flags descriptions
ikrylov
parents:
1745
diff
changeset
|
2985 CommandLineFlags::printFlags(true); |
6ee479178066
6979444: add command line option to print command line flags descriptions
ikrylov
parents:
1745
diff
changeset
|
2986 vm_exit(0); |
6ee479178066
6979444: add command line option to print command line flags descriptions
ikrylov
parents:
1745
diff
changeset
|
2987 } |
6ee479178066
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ikrylov
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1745
diff
changeset
|
2988 #endif |
564 | 2989 } |
2990 | |
2991 if (IgnoreUnrecognizedVMOptions) { | |
2992 // uncast const to modify the flag args->ignoreUnrecognized | |
2993 *(jboolean*)(&args->ignoreUnrecognized) = true; | |
2994 } | |
2995 | |
2996 // Parse specified settings file | |
2997 if (settings_file_specified) { | |
2998 if (!process_settings_file(flags_file, true, args->ignoreUnrecognized)) { | |
2999 return JNI_EINVAL; | |
3000 } | |
0 | 3001 } |
3002 | |
3003 // Parse default .hotspotrc settings file | |
3004 if (!settings_file_specified) { | |
3005 if (!process_settings_file(".hotspotrc", false, args->ignoreUnrecognized)) { | |
3006 return JNI_EINVAL; | |
3007 } | |
3008 } | |
3009 | |
3010 if (PrintVMOptions) { | |
3011 for (index = 0; index < args->nOptions; index++) { | |
3012 const JavaVMOption *option = args->options + index; | |
3013 if (match_option(option, "-XX:", &tail)) { | |
3014 logOption(tail); | |
3015 } | |
3016 } | |
3017 } | |
3018 | |
3019 // Parse JavaVMInitArgs structure passed in, as well as JAVA_TOOL_OPTIONS and _JAVA_OPTIONS | |
3020 jint result = parse_vm_init_args(args); | |
3021 if (result != JNI_OK) { | |
3022 return result; | |
3023 } | |
3024 | |
3025 #ifndef PRODUCT | |
3026 if (TraceBytecodesAt != 0) { | |
3027 TraceBytecodes = true; | |
3028 } | |
3029 if (CountCompiledCalls) { | |
3030 if (UseCounterDecay) { | |
3031 warning("UseCounterDecay disabled because CountCalls is set"); | |
3032 UseCounterDecay = false; | |
3033 } | |
3034 } | |
3035 #endif // PRODUCT | |
3036 | |
2416
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
3037 // Transitional |
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
3038 if (EnableMethodHandles || AnonymousClasses) { |
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
3039 if (!EnableInvokeDynamic && !FLAG_IS_DEFAULT(EnableInvokeDynamic)) { |
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
3040 warning("EnableMethodHandles and AnonymousClasses are obsolete. Keeping EnableInvokeDynamic disabled."); |
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
3041 } else { |
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
3042 EnableInvokeDynamic = true; |
726
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
712
diff
changeset
|
3043 } |
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
712
diff
changeset
|
3044 } |
2416
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
3045 |
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
3046 // JSR 292 is not supported before 1.7 |
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
3047 if (!JDK_Version::is_gte_jdk17x_version()) { |
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
3048 if (EnableInvokeDynamic) { |
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
3049 if (!FLAG_IS_DEFAULT(EnableInvokeDynamic)) { |
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
3050 warning("JSR 292 is not supported before 1.7. Disabling support."); |
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
3051 } |
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
3052 EnableInvokeDynamic = false; |
710 | 3053 } |
3054 } | |
2416
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
3055 |
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
3056 if (EnableInvokeDynamic && ScavengeRootsInCode == 0) { |
989
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
932
diff
changeset
|
3057 if (!FLAG_IS_DEFAULT(ScavengeRootsInCode)) { |
2416
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
3058 warning("forcing ScavengeRootsInCode non-zero because EnableInvokeDynamic is true"); |
989
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
932
diff
changeset
|
3059 } |
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
932
diff
changeset
|
3060 ScavengeRootsInCode = 1; |
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
932
diff
changeset
|
3061 } |
2376
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
never
parents:
2370
diff
changeset
|
3062 if (!JavaObjectsInPerm && ScavengeRootsInCode == 0) { |
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
never
parents:
2370
diff
changeset
|
3063 if (!FLAG_IS_DEFAULT(ScavengeRootsInCode)) { |
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
never
parents:
2370
diff
changeset
|
3064 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
|
3065 } |
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
never
parents:
2370
diff
changeset
|
3066 ScavengeRootsInCode = 1; |
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
never
parents:
2370
diff
changeset
|
3067 } |
710 | 3068 |
0 | 3069 if (PrintGCDetails) { |
3070 // Turn on -verbose:gc options as well | |
3071 PrintGC = true; | |
3072 } | |
3073 | |
1571
2d127394260e
6916623: Align object to 16 bytes to use Compressed Oops with java heap up to 64Gb
kvn
parents:
1506
diff
changeset
|
3074 // 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
|
3075 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
|
3076 |
0 | 3077 #ifdef SERIALGC |
1064 | 3078 force_serial_gc(); |
0 | 3079 #endif // SERIALGC |
3080 #ifdef KERNEL | |
3081 no_shared_spaces(); | |
3082 #endif // KERNEL | |
3083 | |
3084 // Set flags based on ergonomics. | |
3085 set_ergonomics_flags(); | |
3086 | |
2362
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
3087 set_shared_spaces_flags(); |
1135
e66fd840cb6b
6893081: method handle & invokedynamic code needs additional cleanup (post 6815692, 6858164)
twisti
parents:
1131
diff
changeset
|
3088 |
10
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
3089 // Check the GC selections again. |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
3090 if (!check_gc_consistency()) { |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
3091 return JNI_EINVAL; |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
3092 } |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
3093 |
1783 | 3094 if (TieredCompilation) { |
3095 set_tiered_flags(); | |
3096 } else { | |
3097 // Check if the policy is valid. Policies 0 and 1 are valid for non-tiered setup. | |
3098 if (CompilationPolicyChoice >= 2) { | |
3099 vm_exit_during_initialization( | |
3100 "Incompatible compilation policy selected", NULL); | |
3101 } | |
3102 } | |
3103 | |
1145
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1074
diff
changeset
|
3104 #ifndef KERNEL |
2368
dde920245681
6896099: Integrate CMS heap ergo with default heap sizing ergo
ysr
parents:
2366
diff
changeset
|
3105 // Set heap size based on available physical memory |
dde920245681
6896099: Integrate CMS heap ergo with default heap sizing ergo
ysr
parents:
2366
diff
changeset
|
3106 set_heap_size(); |
dde920245681
6896099: Integrate CMS heap ergo with default heap sizing ergo
ysr
parents:
2366
diff
changeset
|
3107 // Set per-collector flags |
dde920245681
6896099: Integrate CMS heap ergo with default heap sizing ergo
ysr
parents:
2366
diff
changeset
|
3108 if (UseParallelGC || UseParallelOldGC) { |
dde920245681
6896099: Integrate CMS heap ergo with default heap sizing ergo
ysr
parents:
2366
diff
changeset
|
3109 set_parallel_gc_flags(); |
dde920245681
6896099: Integrate CMS heap ergo with default heap sizing ergo
ysr
parents:
2366
diff
changeset
|
3110 } 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
|
3111 set_cms_and_parnew_gc_flags(); |
2368
dde920245681
6896099: Integrate CMS heap ergo with default heap sizing ergo
ysr
parents:
2366
diff
changeset
|
3112 } 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
|
3113 set_parnew_gc_flags(); |
dde920245681
6896099: Integrate CMS heap ergo with default heap sizing ergo
ysr
parents:
2366
diff
changeset
|
3114 } else if (UseG1GC) { |
dde920245681
6896099: Integrate CMS heap ergo with default heap sizing ergo
ysr
parents:
2366
diff
changeset
|
3115 set_g1_gc_flags(); |
342
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
135
diff
changeset
|
3116 } |
1145
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1074
diff
changeset
|
3117 #endif // KERNEL |
10
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
3118 |
0 | 3119 #ifdef SERIALGC |
3120 assert(verify_serial_gc_flags(), "SerialGC unset"); | |
3121 #endif // SERIALGC | |
3122 | |
3123 // Set bytecode rewriting flags | |
3124 set_bytecode_flags(); | |
3125 | |
3126 // Set flags if Aggressive optimization flags (-XX:+AggressiveOpts) enabled. | |
3127 set_aggressive_opts_flags(); | |
3128 | |
2239
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3129 // Turn off biased locking for locking debug mode flags, |
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3130 // 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
|
3131 // biased locking. |
2331 | 3132 if (UseHeavyMonitors |
3133 #ifdef COMPILER1 | |
3134 || !UseFastLocking | |
3135 #endif // COMPILER1 | |
3136 ) { | |
2239
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3137 if (!FLAG_IS_DEFAULT(UseBiasedLocking) && UseBiasedLocking) { |
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3138 // 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
|
3139 // can't enable biased locking here |
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3140 warning("Biased Locking is not supported with locking debug flags" |
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3141 "; ignoring UseBiasedLocking flag." ); |
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3142 } |
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3143 UseBiasedLocking = false; |
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3144 } |
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3145 |
0 | 3146 #ifdef CC_INTERP |
1131 | 3147 // Clear flags not supported by the C++ interpreter |
3148 FLAG_SET_DEFAULT(ProfileInterpreter, false); | |
0 | 3149 FLAG_SET_DEFAULT(UseBiasedLocking, false); |
1131 | 3150 LP64_ONLY(FLAG_SET_DEFAULT(UseCompressedOops, false)); |
3151 #endif // CC_INTERP | |
3152 | |
420
a1980da045cc
6462850: generate biased locking code in C2 ideal graph
kvn
parents:
416
diff
changeset
|
3153 #ifdef COMPILER2 |
a1980da045cc
6462850: generate biased locking code in C2 ideal graph
kvn
parents:
416
diff
changeset
|
3154 if (!UseBiasedLocking || EmitSync != 0) { |
a1980da045cc
6462850: generate biased locking code in C2 ideal graph
kvn
parents:
416
diff
changeset
|
3155 UseOptoBiasInlining = false; |
a1980da045cc
6462850: generate biased locking code in C2 ideal graph
kvn
parents:
416
diff
changeset
|
3156 } |
a1980da045cc
6462850: generate biased locking code in C2 ideal graph
kvn
parents:
416
diff
changeset
|
3157 #endif |
a1980da045cc
6462850: generate biased locking code in C2 ideal graph
kvn
parents:
416
diff
changeset
|
3158 |
1155
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1150
diff
changeset
|
3159 if (PrintAssembly && FLAG_IS_DEFAULT(DebugNonSafepoints)) { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1150
diff
changeset
|
3160 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
|
3161 DebugNonSafepoints = true; |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1150
diff
changeset
|
3162 } |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1150
diff
changeset
|
3163 |
1188
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents:
1161
diff
changeset
|
3164 #ifndef PRODUCT |
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents:
1161
diff
changeset
|
3165 if (CompileTheWorld) { |
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents:
1161
diff
changeset
|
3166 // Force NmethodSweeper to sweep whole CodeCache each time. |
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents:
1161
diff
changeset
|
3167 if (FLAG_IS_DEFAULT(NmethodSweepFraction)) { |
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents:
1161
diff
changeset
|
3168 NmethodSweepFraction = 1; |
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents:
1161
diff
changeset
|
3169 } |
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents:
1161
diff
changeset
|
3170 } |
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents:
1161
diff
changeset
|
3171 #endif |
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents:
1161
diff
changeset
|
3172 |
0 | 3173 if (PrintCommandLineFlags) { |
3174 CommandLineFlags::printSetFlags(); | |
3175 } | |
3176 | |
1681
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
3177 // Apply CPU specific policy for the BiasedLocking |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
3178 if (UseBiasedLocking) { |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
3179 if (!VM_Version::use_biased_locking() && |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
3180 !(FLAG_IS_CMDLINE(UseBiasedLocking))) { |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
3181 UseBiasedLocking = false; |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
3182 } |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
3183 } |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
3184 |
2302
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
3185 // set PauseAtExit if the gamma launcher was used and a debugger is attached |
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
3186 // but only if not already set on the commandline |
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
3187 if (Arguments::created_by_gamma_launcher() && os::is_debugger_attached()) { |
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
3188 bool set = false; |
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
3189 CommandLineFlags::wasSetOnCmdline("PauseAtExit", &set); |
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
3190 if (!set) { |
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
3191 FLAG_SET_DEFAULT(PauseAtExit, true); |
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
3192 } |
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
3193 } |
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
3194 |
0 | 3195 return JNI_OK; |
3196 } | |
3197 | |
3198 int Arguments::PropertyList_count(SystemProperty* pl) { | |
3199 int count = 0; | |
3200 while(pl != NULL) { | |
3201 count++; | |
3202 pl = pl->next(); | |
3203 } | |
3204 return count; | |
3205 } | |
3206 | |
3207 const char* Arguments::PropertyList_get_value(SystemProperty *pl, const char* key) { | |
3208 assert(key != NULL, "just checking"); | |
3209 SystemProperty* prop; | |
3210 for (prop = pl; prop != NULL; prop = prop->next()) { | |
3211 if (strcmp(key, prop->key()) == 0) return prop->value(); | |
3212 } | |
3213 return NULL; | |
3214 } | |
3215 | |
3216 const char* Arguments::PropertyList_get_key_at(SystemProperty *pl, int index) { | |
3217 int count = 0; | |
3218 const char* ret_val = NULL; | |
3219 | |
3220 while(pl != NULL) { | |
3221 if(count >= index) { | |
3222 ret_val = pl->key(); | |
3223 break; | |
3224 } | |
3225 count++; | |
3226 pl = pl->next(); | |
3227 } | |
3228 | |
3229 return ret_val; | |
3230 } | |
3231 | |
3232 char* Arguments::PropertyList_get_value_at(SystemProperty* pl, int index) { | |
3233 int count = 0; | |
3234 char* ret_val = NULL; | |
3235 | |
3236 while(pl != NULL) { | |
3237 if(count >= index) { | |
3238 ret_val = pl->value(); | |
3239 break; | |
3240 } | |
3241 count++; | |
3242 pl = pl->next(); | |
3243 } | |
3244 | |
3245 return ret_val; | |
3246 } | |
3247 | |
3248 void Arguments::PropertyList_add(SystemProperty** plist, SystemProperty *new_p) { | |
3249 SystemProperty* p = *plist; | |
3250 if (p == NULL) { | |
3251 *plist = new_p; | |
3252 } else { | |
3253 while (p->next() != NULL) { | |
3254 p = p->next(); | |
3255 } | |
3256 p->set_next(new_p); | |
3257 } | |
3258 } | |
3259 | |
3260 void Arguments::PropertyList_add(SystemProperty** plist, const char* k, char* v) { | |
3261 if (plist == NULL) | |
3262 return; | |
3263 | |
3264 SystemProperty* new_p = new SystemProperty(k, v, true); | |
3265 PropertyList_add(plist, new_p); | |
3266 } | |
3267 | |
3268 // This add maintains unique property key in the list. | |
691 | 3269 void Arguments::PropertyList_unique_add(SystemProperty** plist, const char* k, char* v, jboolean append) { |
0 | 3270 if (plist == NULL) |
3271 return; | |
3272 | |
3273 // If property key exist then update with new value. | |
3274 SystemProperty* prop; | |
3275 for (prop = *plist; prop != NULL; prop = prop->next()) { | |
3276 if (strcmp(k, prop->key()) == 0) { | |
691 | 3277 if (append) { |
3278 prop->append_value(v); | |
3279 } else { | |
3280 prop->set_value(v); | |
3281 } | |
0 | 3282 return; |
3283 } | |
3284 } | |
3285 | |
3286 PropertyList_add(plist, k, v); | |
3287 } | |
3288 | |
3289 #ifdef KERNEL | |
3290 char *Arguments::get_kernel_properties() { | |
3291 // Find properties starting with kernel and append them to string | |
3292 // We need to find out how long they are first because the URL's that they | |
3293 // might point to could get long. | |
3294 int length = 0; | |
3295 SystemProperty* prop; | |
3296 for (prop = _system_properties; prop != NULL; prop = prop->next()) { | |
3297 if (strncmp(prop->key(), "kernel.", 7 ) == 0) { | |
3298 length += (strlen(prop->key()) + strlen(prop->value()) + 5); // "-D =" | |
3299 } | |
3300 } | |
3301 // Add one for null terminator. | |
3302 char *props = AllocateHeap(length + 1, "get_kernel_properties"); | |
3303 if (length != 0) { | |
3304 int pos = 0; | |
3305 for (prop = _system_properties; prop != NULL; prop = prop->next()) { | |
3306 if (strncmp(prop->key(), "kernel.", 7 ) == 0) { | |
3307 jio_snprintf(&props[pos], length-pos, | |
3308 "-D%s=%s ", prop->key(), prop->value()); | |
3309 pos = strlen(props); | |
3310 } | |
3311 } | |
3312 } | |
3313 // null terminate props in case of null | |
3314 props[length] = '\0'; | |
3315 return props; | |
3316 } | |
3317 #endif // KERNEL | |
3318 | |
3319 // Copies src into buf, replacing "%%" with "%" and "%p" with pid | |
3320 // Returns true if all of the source pointed by src has been copied over to | |
3321 // the destination buffer pointed by buf. Otherwise, returns false. | |
3322 // Notes: | |
3323 // 1. If the length (buflen) of the destination buffer excluding the | |
3324 // NULL terminator character is not long enough for holding the expanded | |
3325 // pid characters, it also returns false instead of returning the partially | |
3326 // expanded one. | |
3327 // 2. The passed in "buflen" should be large enough to hold the null terminator. | |
3328 bool Arguments::copy_expand_pid(const char* src, size_t srclen, | |
3329 char* buf, size_t buflen) { | |
3330 const char* p = src; | |
3331 char* b = buf; | |
3332 const char* src_end = &src[srclen]; | |
3333 char* buf_end = &buf[buflen - 1]; | |
3334 | |
3335 while (p < src_end && b < buf_end) { | |
3336 if (*p == '%') { | |
3337 switch (*(++p)) { | |
3338 case '%': // "%%" ==> "%" | |
3339 *b++ = *p++; | |
3340 break; | |
3341 case 'p': { // "%p" ==> current process id | |
3342 // buf_end points to the character before the last character so | |
3343 // that we could write '\0' to the end of the buffer. | |
3344 size_t buf_sz = buf_end - b + 1; | |
3345 int ret = jio_snprintf(b, buf_sz, "%d", os::current_process_id()); | |
3346 | |
3347 // if jio_snprintf fails or the buffer is not long enough to hold | |
3348 // the expanded pid, returns false. | |
3349 if (ret < 0 || ret >= (int)buf_sz) { | |
3350 return false; | |
3351 } else { | |
3352 b += ret; | |
3353 assert(*b == '\0', "fail in copy_expand_pid"); | |
3354 if (p == src_end && b == buf_end + 1) { | |
3355 // reach the end of the buffer. | |
3356 return true; | |
3357 } | |
3358 } | |
3359 p++; | |
3360 break; | |
3361 } | |
3362 default : | |
3363 *b++ = '%'; | |
3364 } | |
3365 } else { | |
3366 *b++ = *p++; | |
3367 } | |
3368 } | |
3369 *b = '\0'; | |
3370 return (p == src_end); // return false if not all of the source was copied | |
3371 } |