Mercurial > hg > graal-compiler
annotate src/share/vm/runtime/arguments.cpp @ 4879:24cae3e4cbaa
6679764: enable parallel compaction by default
Reviewed-by: phh, jmasa
author | jcoomes |
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date | Thu, 02 Feb 2012 16:05:17 -0800 |
parents | 0a10d80352d5 |
children | 7df3125953cb 69333a2fbae2 |
rev | line source |
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0 | 1 /* |
4838 | 2 * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #include "precompiled.hpp" |
26 #include "classfile/javaAssertions.hpp" | |
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_OS_FAMILY_linux | |
41 # include "os_linux.inline.hpp" | |
42 #endif | |
43 #ifdef TARGET_OS_FAMILY_solaris | |
44 # include "os_solaris.inline.hpp" | |
45 #endif | |
46 #ifdef TARGET_OS_FAMILY_windows | |
47 # include "os_windows.inline.hpp" | |
48 #endif | |
3960 | 49 #ifdef TARGET_OS_FAMILY_bsd |
50 # include "os_bsd.inline.hpp" | |
51 #endif | |
1972 | 52 #ifndef SERIALGC |
53 #include "gc_implementation/concurrentMarkSweep/compactibleFreeListSpace.hpp" | |
54 #endif | |
0 | 55 |
2474 | 56 // Note: This is a special bug reporting site for the JVM |
57 #define DEFAULT_VENDOR_URL_BUG "http://bugreport.sun.com/bugreport/crash.jsp" | |
0 | 58 #define DEFAULT_JAVA_LAUNCHER "generic" |
59 | |
60 char** Arguments::_jvm_flags_array = NULL; | |
61 int Arguments::_num_jvm_flags = 0; | |
62 char** Arguments::_jvm_args_array = NULL; | |
63 int Arguments::_num_jvm_args = 0; | |
64 char* Arguments::_java_command = NULL; | |
65 SystemProperty* Arguments::_system_properties = NULL; | |
66 const char* Arguments::_gc_log_filename = NULL; | |
67 bool Arguments::_has_profile = false; | |
68 bool Arguments::_has_alloc_profile = false; | |
69 uintx Arguments::_min_heap_size = 0; | |
70 Arguments::Mode Arguments::_mode = _mixed; | |
71 bool Arguments::_java_compiler = false; | |
72 bool Arguments::_xdebug_mode = false; | |
73 const char* Arguments::_java_vendor_url_bug = DEFAULT_VENDOR_URL_BUG; | |
74 const char* Arguments::_sun_java_launcher = DEFAULT_JAVA_LAUNCHER; | |
75 int Arguments::_sun_java_launcher_pid = -1; | |
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76 bool Arguments::_created_by_gamma_launcher = false; |
0 | 77 |
78 // These parameters are reset in method parse_vm_init_args(JavaVMInitArgs*) | |
79 bool Arguments::_AlwaysCompileLoopMethods = AlwaysCompileLoopMethods; | |
80 bool Arguments::_UseOnStackReplacement = UseOnStackReplacement; | |
81 bool Arguments::_BackgroundCompilation = BackgroundCompilation; | |
82 bool Arguments::_ClipInlining = ClipInlining; | |
83 | |
84 char* Arguments::SharedArchivePath = NULL; | |
85 | |
86 AgentLibraryList Arguments::_libraryList; | |
87 AgentLibraryList Arguments::_agentList; | |
88 | |
89 abort_hook_t Arguments::_abort_hook = NULL; | |
90 exit_hook_t Arguments::_exit_hook = NULL; | |
91 vfprintf_hook_t Arguments::_vfprintf_hook = NULL; | |
92 | |
93 | |
94 SystemProperty *Arguments::_java_ext_dirs = NULL; | |
95 SystemProperty *Arguments::_java_endorsed_dirs = NULL; | |
96 SystemProperty *Arguments::_sun_boot_library_path = NULL; | |
97 SystemProperty *Arguments::_java_library_path = NULL; | |
98 SystemProperty *Arguments::_java_home = NULL; | |
99 SystemProperty *Arguments::_java_class_path = NULL; | |
100 SystemProperty *Arguments::_sun_boot_class_path = NULL; | |
101 | |
102 char* Arguments::_meta_index_path = NULL; | |
103 char* Arguments::_meta_index_dir = NULL; | |
104 | |
105 static bool force_client_mode = false; | |
106 | |
107 // Check if head of 'option' matches 'name', and sets 'tail' remaining part of option string | |
108 | |
109 static bool match_option(const JavaVMOption *option, const char* name, | |
110 const char** tail) { | |
111 int len = (int)strlen(name); | |
112 if (strncmp(option->optionString, name, len) == 0) { | |
113 *tail = option->optionString + len; | |
114 return true; | |
115 } else { | |
116 return false; | |
117 } | |
118 } | |
119 | |
120 static void logOption(const char* opt) { | |
121 if (PrintVMOptions) { | |
122 jio_fprintf(defaultStream::output_stream(), "VM option '%s'\n", opt); | |
123 } | |
124 } | |
125 | |
126 // Process java launcher properties. | |
127 void Arguments::process_sun_java_launcher_properties(JavaVMInitArgs* args) { | |
128 // See if sun.java.launcher or sun.java.launcher.pid is defined. | |
129 // Must do this before setting up other system properties, | |
130 // as some of them may depend on launcher type. | |
131 for (int index = 0; index < args->nOptions; index++) { | |
132 const JavaVMOption* option = args->options + index; | |
133 const char* tail; | |
134 | |
135 if (match_option(option, "-Dsun.java.launcher=", &tail)) { | |
136 process_java_launcher_argument(tail, option->extraInfo); | |
137 continue; | |
138 } | |
139 if (match_option(option, "-Dsun.java.launcher.pid=", &tail)) { | |
140 _sun_java_launcher_pid = atoi(tail); | |
141 continue; | |
142 } | |
143 } | |
144 } | |
145 | |
146 // Initialize system properties key and value. | |
147 void Arguments::init_system_properties() { | |
148 | |
149 PropertyList_add(&_system_properties, new SystemProperty("java.vm.specification.name", | |
150 "Java Virtual Machine Specification", false)); | |
151 PropertyList_add(&_system_properties, new SystemProperty("java.vm.version", VM_Version::vm_release(), false)); | |
152 PropertyList_add(&_system_properties, new SystemProperty("java.vm.name", VM_Version::vm_name(), false)); | |
153 PropertyList_add(&_system_properties, new SystemProperty("java.vm.info", VM_Version::vm_info_string(), true)); | |
154 | |
155 // following are JVMTI agent writeable properties. | |
156 // Properties values are set to NULL and they are | |
157 // os specific they are initialized in os::init_system_properties_values(). | |
158 _java_ext_dirs = new SystemProperty("java.ext.dirs", NULL, true); | |
159 _java_endorsed_dirs = new SystemProperty("java.endorsed.dirs", NULL, true); | |
160 _sun_boot_library_path = new SystemProperty("sun.boot.library.path", NULL, true); | |
161 _java_library_path = new SystemProperty("java.library.path", NULL, true); | |
162 _java_home = new SystemProperty("java.home", NULL, true); | |
163 _sun_boot_class_path = new SystemProperty("sun.boot.class.path", NULL, true); | |
164 | |
165 _java_class_path = new SystemProperty("java.class.path", "", true); | |
166 | |
167 // Add to System Property list. | |
168 PropertyList_add(&_system_properties, _java_ext_dirs); | |
169 PropertyList_add(&_system_properties, _java_endorsed_dirs); | |
170 PropertyList_add(&_system_properties, _sun_boot_library_path); | |
171 PropertyList_add(&_system_properties, _java_library_path); | |
172 PropertyList_add(&_system_properties, _java_home); | |
173 PropertyList_add(&_system_properties, _java_class_path); | |
174 PropertyList_add(&_system_properties, _sun_boot_class_path); | |
175 | |
176 // Set OS specific system properties values | |
177 os::init_system_properties_values(); | |
178 } | |
179 | |
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180 |
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181 // Update/Initialize System properties after JDK version number is known |
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182 void Arguments::init_version_specific_system_properties() { |
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183 enum { bufsz = 16 }; |
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184 char buffer[bufsz]; |
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185 const char* spec_vendor = "Sun Microsystems Inc."; |
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186 uint32_t spec_version = 0; |
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187 |
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188 if (JDK_Version::is_gte_jdk17x_version()) { |
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189 spec_vendor = "Oracle Corporation"; |
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190 spec_version = JDK_Version::current().major_version(); |
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191 } |
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192 jio_snprintf(buffer, bufsz, "1." UINT32_FORMAT, spec_version); |
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193 |
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194 PropertyList_add(&_system_properties, |
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195 new SystemProperty("java.vm.specification.vendor", spec_vendor, false)); |
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196 PropertyList_add(&_system_properties, |
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197 new SystemProperty("java.vm.specification.version", buffer, false)); |
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198 PropertyList_add(&_system_properties, |
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199 new SystemProperty("java.vm.vendor", VM_Version::vm_vendor(), false)); |
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200 } |
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201 |
242 | 202 /** |
203 * Provide a slightly more user-friendly way of eliminating -XX flags. | |
204 * When a flag is eliminated, it can be added to this list in order to | |
205 * continue accepting this flag on the command-line, while issuing a warning | |
206 * and ignoring the value. Once the JDK version reaches the 'accept_until' | |
207 * limit, we flatly refuse to admit the existence of the flag. This allows | |
208 * a flag to die correctly over JDK releases using HSX. | |
209 */ | |
210 typedef struct { | |
211 const char* name; | |
212 JDK_Version obsoleted_in; // when the flag went away | |
213 JDK_Version accept_until; // which version to start denying the existence | |
214 } ObsoleteFlag; | |
0 | 215 |
242 | 216 static ObsoleteFlag obsolete_jvm_flags[] = { |
217 { "UseTrainGC", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
218 { "UseSpecialLargeObjectHandling", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
219 { "UseOversizedCarHandling", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
220 { "TraceCarAllocation", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
221 { "PrintTrainGCProcessingStats", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
222 { "LogOfCarSpaceSize", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
223 { "OversizedCarThreshold", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
224 { "MinTickInterval", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
225 { "DefaultTickInterval", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
226 { "MaxTickInterval", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
227 { "DelayTickAdjustment", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
228 { "ProcessingToTenuringRatio", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
229 { "MinTrainLength", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
230 { "AppendRatio", JDK_Version::jdk_update(6,10), JDK_Version::jdk(7) }, | |
1064 | 231 { "DefaultMaxRAM", JDK_Version::jdk_update(6,18), JDK_Version::jdk(7) }, |
232 { "DefaultInitialRAMFraction", | |
233 JDK_Version::jdk_update(6,18), JDK_Version::jdk(7) }, | |
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234 { "UseDepthFirstScavengeOrder", |
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235 JDK_Version::jdk_update(6,22), JDK_Version::jdk(7) }, |
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236 { "HandlePromotionFailure", |
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237 JDK_Version::jdk_update(6,24), JDK_Version::jdk(8) }, |
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238 { "MaxLiveObjectEvacuationRatio", |
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239 JDK_Version::jdk_update(6,24), JDK_Version::jdk(8) }, |
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240 { "ForceSharedSpaces", JDK_Version::jdk_update(6,25), JDK_Version::jdk(8) }, |
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241 { "UseParallelOldGCCompacting", |
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242 JDK_Version::jdk_update(6,27), JDK_Version::jdk(8) }, |
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243 { "UseParallelDensePrefixUpdate", |
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244 JDK_Version::jdk_update(6,27), JDK_Version::jdk(8) }, |
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245 { "UseParallelOldGCDensePrefix", |
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246 JDK_Version::jdk_update(6,27), JDK_Version::jdk(8) }, |
2460 | 247 { "AllowTransitionalJSR292", JDK_Version::jdk(7), JDK_Version::jdk(8) }, |
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248 { "UseCompressedStrings", JDK_Version::jdk(7), JDK_Version::jdk(8) }, |
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249 #ifdef PRODUCT |
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250 { "DesiredMethodLimit", |
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251 JDK_Version::jdk_update(7, 2), JDK_Version::jdk(8) }, |
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252 #endif // PRODUCT |
242 | 253 { NULL, JDK_Version(0), JDK_Version(0) } |
254 }; | |
255 | |
256 // Returns true if the flag is obsolete and fits into the range specified | |
257 // for being ignored. In the case that the flag is ignored, the 'version' | |
258 // value is filled in with the version number when the flag became | |
259 // obsolete so that that value can be displayed to the user. | |
260 bool Arguments::is_newly_obsolete(const char *s, JDK_Version* version) { | |
0 | 261 int i = 0; |
242 | 262 assert(version != NULL, "Must provide a version buffer"); |
263 while (obsolete_jvm_flags[i].name != NULL) { | |
264 const ObsoleteFlag& flag_status = obsolete_jvm_flags[i]; | |
0 | 265 // <flag>=xxx form |
266 // [-|+]<flag> form | |
242 | 267 if ((strncmp(flag_status.name, s, strlen(flag_status.name)) == 0) || |
0 | 268 ((s[0] == '+' || s[0] == '-') && |
242 | 269 (strncmp(flag_status.name, &s[1], strlen(flag_status.name)) == 0))) { |
270 if (JDK_Version::current().compare(flag_status.accept_until) == -1) { | |
271 *version = flag_status.obsoleted_in; | |
272 return true; | |
273 } | |
0 | 274 } |
275 i++; | |
276 } | |
277 return false; | |
278 } | |
279 | |
280 // Constructs the system class path (aka boot class path) from the following | |
281 // components, in order: | |
282 // | |
283 // prefix // from -Xbootclasspath/p:... | |
284 // endorsed // the expansion of -Djava.endorsed.dirs=... | |
285 // base // from os::get_system_properties() or -Xbootclasspath= | |
286 // suffix // from -Xbootclasspath/a:... | |
287 // | |
288 // java.endorsed.dirs is a list of directories; any jar or zip files in the | |
289 // directories are added to the sysclasspath just before the base. | |
290 // | |
291 // This could be AllStatic, but it isn't needed after argument processing is | |
292 // complete. | |
293 class SysClassPath: public StackObj { | |
294 public: | |
295 SysClassPath(const char* base); | |
296 ~SysClassPath(); | |
297 | |
298 inline void set_base(const char* base); | |
299 inline void add_prefix(const char* prefix); | |
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300 inline void add_suffix_to_prefix(const char* suffix); |
0 | 301 inline void add_suffix(const char* suffix); |
302 inline void reset_path(const char* base); | |
303 | |
304 // Expand the jar/zip files in each directory listed by the java.endorsed.dirs | |
305 // property. Must be called after all command-line arguments have been | |
306 // processed (in particular, -Djava.endorsed.dirs=...) and before calling | |
307 // combined_path(). | |
308 void expand_endorsed(); | |
309 | |
310 inline const char* get_base() const { return _items[_scp_base]; } | |
311 inline const char* get_prefix() const { return _items[_scp_prefix]; } | |
312 inline const char* get_suffix() const { return _items[_scp_suffix]; } | |
313 inline const char* get_endorsed() const { return _items[_scp_endorsed]; } | |
314 | |
315 // Combine all the components into a single c-heap-allocated string; caller | |
316 // must free the string if/when no longer needed. | |
317 char* combined_path(); | |
318 | |
319 private: | |
320 // Utility routines. | |
321 static char* add_to_path(const char* path, const char* str, bool prepend); | |
322 static char* add_jars_to_path(char* path, const char* directory); | |
323 | |
324 inline void reset_item_at(int index); | |
325 | |
326 // Array indices for the items that make up the sysclasspath. All except the | |
327 // base are allocated in the C heap and freed by this class. | |
328 enum { | |
329 _scp_prefix, // from -Xbootclasspath/p:... | |
330 _scp_endorsed, // the expansion of -Djava.endorsed.dirs=... | |
331 _scp_base, // the default sysclasspath | |
332 _scp_suffix, // from -Xbootclasspath/a:... | |
333 _scp_nitems // the number of items, must be last. | |
334 }; | |
335 | |
336 const char* _items[_scp_nitems]; | |
337 DEBUG_ONLY(bool _expansion_done;) | |
338 }; | |
339 | |
340 SysClassPath::SysClassPath(const char* base) { | |
341 memset(_items, 0, sizeof(_items)); | |
342 _items[_scp_base] = base; | |
343 DEBUG_ONLY(_expansion_done = false;) | |
344 } | |
345 | |
346 SysClassPath::~SysClassPath() { | |
347 // Free everything except the base. | |
348 for (int i = 0; i < _scp_nitems; ++i) { | |
349 if (i != _scp_base) reset_item_at(i); | |
350 } | |
351 DEBUG_ONLY(_expansion_done = false;) | |
352 } | |
353 | |
354 inline void SysClassPath::set_base(const char* base) { | |
355 _items[_scp_base] = base; | |
356 } | |
357 | |
358 inline void SysClassPath::add_prefix(const char* prefix) { | |
359 _items[_scp_prefix] = add_to_path(_items[_scp_prefix], prefix, true); | |
360 } | |
361 | |
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362 inline void SysClassPath::add_suffix_to_prefix(const char* suffix) { |
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363 _items[_scp_prefix] = add_to_path(_items[_scp_prefix], suffix, false); |
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364 } |
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365 |
0 | 366 inline void SysClassPath::add_suffix(const char* suffix) { |
367 _items[_scp_suffix] = add_to_path(_items[_scp_suffix], suffix, false); | |
368 } | |
369 | |
370 inline void SysClassPath::reset_item_at(int index) { | |
371 assert(index < _scp_nitems && index != _scp_base, "just checking"); | |
372 if (_items[index] != NULL) { | |
373 FREE_C_HEAP_ARRAY(char, _items[index]); | |
374 _items[index] = NULL; | |
375 } | |
376 } | |
377 | |
378 inline void SysClassPath::reset_path(const char* base) { | |
379 // Clear the prefix and suffix. | |
380 reset_item_at(_scp_prefix); | |
381 reset_item_at(_scp_suffix); | |
382 set_base(base); | |
383 } | |
384 | |
385 //------------------------------------------------------------------------------ | |
386 | |
387 void SysClassPath::expand_endorsed() { | |
388 assert(_items[_scp_endorsed] == NULL, "can only be called once."); | |
389 | |
390 const char* path = Arguments::get_property("java.endorsed.dirs"); | |
391 if (path == NULL) { | |
392 path = Arguments::get_endorsed_dir(); | |
393 assert(path != NULL, "no default for java.endorsed.dirs"); | |
394 } | |
395 | |
396 char* expanded_path = NULL; | |
397 const char separator = *os::path_separator(); | |
398 const char* const end = path + strlen(path); | |
399 while (path < end) { | |
400 const char* tmp_end = strchr(path, separator); | |
401 if (tmp_end == NULL) { | |
402 expanded_path = add_jars_to_path(expanded_path, path); | |
403 path = end; | |
404 } else { | |
405 char* dirpath = NEW_C_HEAP_ARRAY(char, tmp_end - path + 1); | |
406 memcpy(dirpath, path, tmp_end - path); | |
407 dirpath[tmp_end - path] = '\0'; | |
408 expanded_path = add_jars_to_path(expanded_path, dirpath); | |
409 FREE_C_HEAP_ARRAY(char, dirpath); | |
410 path = tmp_end + 1; | |
411 } | |
412 } | |
413 _items[_scp_endorsed] = expanded_path; | |
414 DEBUG_ONLY(_expansion_done = true;) | |
415 } | |
416 | |
417 // Combine the bootclasspath elements, some of which may be null, into a single | |
418 // c-heap-allocated string. | |
419 char* SysClassPath::combined_path() { | |
420 assert(_items[_scp_base] != NULL, "empty default sysclasspath"); | |
421 assert(_expansion_done, "must call expand_endorsed() first."); | |
422 | |
423 size_t lengths[_scp_nitems]; | |
424 size_t total_len = 0; | |
425 | |
426 const char separator = *os::path_separator(); | |
427 | |
428 // Get the lengths. | |
429 int i; | |
430 for (i = 0; i < _scp_nitems; ++i) { | |
431 if (_items[i] != NULL) { | |
432 lengths[i] = strlen(_items[i]); | |
433 // Include space for the separator char (or a NULL for the last item). | |
434 total_len += lengths[i] + 1; | |
435 } | |
436 } | |
437 assert(total_len > 0, "empty sysclasspath not allowed"); | |
438 | |
439 // Copy the _items to a single string. | |
440 char* cp = NEW_C_HEAP_ARRAY(char, total_len); | |
441 char* cp_tmp = cp; | |
442 for (i = 0; i < _scp_nitems; ++i) { | |
443 if (_items[i] != NULL) { | |
444 memcpy(cp_tmp, _items[i], lengths[i]); | |
445 cp_tmp += lengths[i]; | |
446 *cp_tmp++ = separator; | |
447 } | |
448 } | |
449 *--cp_tmp = '\0'; // Replace the extra separator. | |
450 return cp; | |
451 } | |
452 | |
453 // Note: path must be c-heap-allocated (or NULL); it is freed if non-null. | |
454 char* | |
455 SysClassPath::add_to_path(const char* path, const char* str, bool prepend) { | |
456 char *cp; | |
457 | |
458 assert(str != NULL, "just checking"); | |
459 if (path == NULL) { | |
460 size_t len = strlen(str) + 1; | |
461 cp = NEW_C_HEAP_ARRAY(char, len); | |
462 memcpy(cp, str, len); // copy the trailing null | |
463 } else { | |
464 const char separator = *os::path_separator(); | |
465 size_t old_len = strlen(path); | |
466 size_t str_len = strlen(str); | |
467 size_t len = old_len + str_len + 2; | |
468 | |
469 if (prepend) { | |
470 cp = NEW_C_HEAP_ARRAY(char, len); | |
471 char* cp_tmp = cp; | |
472 memcpy(cp_tmp, str, str_len); | |
473 cp_tmp += str_len; | |
474 *cp_tmp = separator; | |
475 memcpy(++cp_tmp, path, old_len + 1); // copy the trailing null | |
476 FREE_C_HEAP_ARRAY(char, path); | |
477 } else { | |
478 cp = REALLOC_C_HEAP_ARRAY(char, path, len); | |
479 char* cp_tmp = cp + old_len; | |
480 *cp_tmp = separator; | |
481 memcpy(++cp_tmp, str, str_len + 1); // copy the trailing null | |
482 } | |
483 } | |
484 return cp; | |
485 } | |
486 | |
487 // Scan the directory and append any jar or zip files found to path. | |
488 // Note: path must be c-heap-allocated (or NULL); it is freed if non-null. | |
489 char* SysClassPath::add_jars_to_path(char* path, const char* directory) { | |
490 DIR* dir = os::opendir(directory); | |
491 if (dir == NULL) return path; | |
492 | |
493 char dir_sep[2] = { '\0', '\0' }; | |
494 size_t directory_len = strlen(directory); | |
495 const char fileSep = *os::file_separator(); | |
496 if (directory[directory_len - 1] != fileSep) dir_sep[0] = fileSep; | |
497 | |
498 /* Scan the directory for jars/zips, appending them to path. */ | |
499 struct dirent *entry; | |
500 char *dbuf = NEW_C_HEAP_ARRAY(char, os::readdir_buf_size(directory)); | |
501 while ((entry = os::readdir(dir, (dirent *) dbuf)) != NULL) { | |
502 const char* name = entry->d_name; | |
503 const char* ext = name + strlen(name) - 4; | |
504 bool isJarOrZip = ext > name && | |
505 (os::file_name_strcmp(ext, ".jar") == 0 || | |
506 os::file_name_strcmp(ext, ".zip") == 0); | |
507 if (isJarOrZip) { | |
508 char* jarpath = NEW_C_HEAP_ARRAY(char, directory_len + 2 + strlen(name)); | |
509 sprintf(jarpath, "%s%s%s", directory, dir_sep, name); | |
510 path = add_to_path(path, jarpath, false); | |
511 FREE_C_HEAP_ARRAY(char, jarpath); | |
512 } | |
513 } | |
514 FREE_C_HEAP_ARRAY(char, dbuf); | |
515 os::closedir(dir); | |
516 return path; | |
517 } | |
518 | |
519 // Parses a memory size specification string. | |
489
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520 static bool atomull(const char *s, julong* result) { |
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521 julong n = 0; |
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522 int args_read = sscanf(s, os::julong_format_specifier(), &n); |
0 | 523 if (args_read != 1) { |
524 return false; | |
525 } | |
526 while (*s != '\0' && isdigit(*s)) { | |
527 s++; | |
528 } | |
529 // 4705540: illegal if more characters are found after the first non-digit | |
530 if (strlen(s) > 1) { | |
531 return false; | |
532 } | |
533 switch (*s) { | |
534 case 'T': case 't': | |
535 *result = n * G * K; | |
489
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536 // Check for overflow. |
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537 if (*result/((julong)G * K) != n) return false; |
0 | 538 return true; |
539 case 'G': case 'g': | |
540 *result = n * G; | |
489
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541 if (*result/G != n) return false; |
0 | 542 return true; |
543 case 'M': case 'm': | |
544 *result = n * M; | |
489
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545 if (*result/M != n) return false; |
0 | 546 return true; |
547 case 'K': case 'k': | |
548 *result = n * K; | |
489
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549 if (*result/K != n) return false; |
0 | 550 return true; |
551 case '\0': | |
552 *result = n; | |
553 return true; | |
554 default: | |
555 return false; | |
556 } | |
557 } | |
558 | |
489
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559 Arguments::ArgsRange Arguments::check_memory_size(julong size, julong min_size) { |
0 | 560 if (size < min_size) return arg_too_small; |
561 // Check that size will fit in a size_t (only relevant on 32-bit) | |
489
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562 if (size > max_uintx) return arg_too_big; |
0 | 563 return arg_in_range; |
564 } | |
565 | |
566 // Describe an argument out of range error | |
567 void Arguments::describe_range_error(ArgsRange errcode) { | |
568 switch(errcode) { | |
569 case arg_too_big: | |
570 jio_fprintf(defaultStream::error_stream(), | |
571 "The specified size exceeds the maximum " | |
572 "representable size.\n"); | |
573 break; | |
574 case arg_too_small: | |
575 case arg_unreadable: | |
576 case arg_in_range: | |
577 // do nothing for now | |
578 break; | |
579 default: | |
580 ShouldNotReachHere(); | |
581 } | |
582 } | |
583 | |
584 static bool set_bool_flag(char* name, bool value, FlagValueOrigin origin) { | |
585 return CommandLineFlags::boolAtPut(name, &value, origin); | |
586 } | |
587 | |
588 static bool set_fp_numeric_flag(char* name, char* value, FlagValueOrigin origin) { | |
589 double v; | |
590 if (sscanf(value, "%lf", &v) != 1) { | |
591 return false; | |
592 } | |
593 | |
594 if (CommandLineFlags::doubleAtPut(name, &v, origin)) { | |
595 return true; | |
596 } | |
597 return false; | |
598 } | |
599 | |
600 static bool set_numeric_flag(char* name, char* value, FlagValueOrigin origin) { | |
489
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601 julong v; |
0 | 602 intx intx_v; |
603 bool is_neg = false; | |
489
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604 // Check the sign first since atomull() parses only unsigned values. |
0 | 605 if (*value == '-') { |
606 if (!CommandLineFlags::intxAt(name, &intx_v)) { | |
607 return false; | |
608 } | |
609 value++; | |
610 is_neg = true; | |
611 } | |
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612 if (!atomull(value, &v)) { |
0 | 613 return false; |
614 } | |
615 intx_v = (intx) v; | |
616 if (is_neg) { | |
617 intx_v = -intx_v; | |
618 } | |
619 if (CommandLineFlags::intxAtPut(name, &intx_v, origin)) { | |
620 return true; | |
621 } | |
622 uintx uintx_v = (uintx) v; | |
623 if (!is_neg && CommandLineFlags::uintxAtPut(name, &uintx_v, origin)) { | |
624 return true; | |
625 } | |
1064 | 626 uint64_t uint64_t_v = (uint64_t) v; |
627 if (!is_neg && CommandLineFlags::uint64_tAtPut(name, &uint64_t_v, origin)) { | |
628 return true; | |
629 } | |
0 | 630 return false; |
631 } | |
632 | |
633 static bool set_string_flag(char* name, const char* value, FlagValueOrigin origin) { | |
634 if (!CommandLineFlags::ccstrAtPut(name, &value, origin)) return false; | |
635 // Contract: CommandLineFlags always returns a pointer that needs freeing. | |
636 FREE_C_HEAP_ARRAY(char, value); | |
637 return true; | |
638 } | |
639 | |
640 static bool append_to_string_flag(char* name, const char* new_value, FlagValueOrigin origin) { | |
641 const char* old_value = ""; | |
642 if (!CommandLineFlags::ccstrAt(name, &old_value)) return false; | |
643 size_t old_len = old_value != NULL ? strlen(old_value) : 0; | |
644 size_t new_len = strlen(new_value); | |
645 const char* value; | |
646 char* free_this_too = NULL; | |
647 if (old_len == 0) { | |
648 value = new_value; | |
649 } else if (new_len == 0) { | |
650 value = old_value; | |
651 } else { | |
652 char* buf = NEW_C_HEAP_ARRAY(char, old_len + 1 + new_len + 1); | |
653 // each new setting adds another LINE to the switch: | |
654 sprintf(buf, "%s\n%s", old_value, new_value); | |
655 value = buf; | |
656 free_this_too = buf; | |
657 } | |
658 (void) CommandLineFlags::ccstrAtPut(name, &value, origin); | |
659 // CommandLineFlags always returns a pointer that needs freeing. | |
660 FREE_C_HEAP_ARRAY(char, value); | |
661 if (free_this_too != NULL) { | |
662 // CommandLineFlags made its own copy, so I must delete my own temp. buffer. | |
663 FREE_C_HEAP_ARRAY(char, free_this_too); | |
664 } | |
665 return true; | |
666 } | |
667 | |
668 bool Arguments::parse_argument(const char* arg, FlagValueOrigin origin) { | |
669 | |
670 // range of acceptable characters spelled out for portability reasons | |
671 #define NAME_RANGE "[abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789_]" | |
672 #define BUFLEN 255 | |
673 char name[BUFLEN+1]; | |
674 char dummy; | |
675 | |
676 if (sscanf(arg, "-%" XSTR(BUFLEN) NAME_RANGE "%c", name, &dummy) == 1) { | |
677 return set_bool_flag(name, false, origin); | |
678 } | |
679 if (sscanf(arg, "+%" XSTR(BUFLEN) NAME_RANGE "%c", name, &dummy) == 1) { | |
680 return set_bool_flag(name, true, origin); | |
681 } | |
682 | |
683 char punct; | |
684 if (sscanf(arg, "%" XSTR(BUFLEN) NAME_RANGE "%c", name, &punct) == 2 && punct == '=') { | |
685 const char* value = strchr(arg, '=') + 1; | |
686 Flag* flag = Flag::find_flag(name, strlen(name)); | |
687 if (flag != NULL && flag->is_ccstr()) { | |
688 if (flag->ccstr_accumulates()) { | |
689 return append_to_string_flag(name, value, origin); | |
690 } else { | |
691 if (value[0] == '\0') { | |
692 value = NULL; | |
693 } | |
694 return set_string_flag(name, value, origin); | |
695 } | |
696 } | |
697 } | |
698 | |
699 if (sscanf(arg, "%" XSTR(BUFLEN) NAME_RANGE ":%c", name, &punct) == 2 && punct == '=') { | |
700 const char* value = strchr(arg, '=') + 1; | |
701 // -XX:Foo:=xxx will reset the string flag to the given value. | |
702 if (value[0] == '\0') { | |
703 value = NULL; | |
704 } | |
705 return set_string_flag(name, value, origin); | |
706 } | |
707 | |
708 #define SIGNED_FP_NUMBER_RANGE "[-0123456789.]" | |
709 #define SIGNED_NUMBER_RANGE "[-0123456789]" | |
710 #define NUMBER_RANGE "[0123456789]" | |
711 char value[BUFLEN + 1]; | |
712 char value2[BUFLEN + 1]; | |
713 if (sscanf(arg, "%" XSTR(BUFLEN) NAME_RANGE "=" "%" XSTR(BUFLEN) SIGNED_NUMBER_RANGE "." "%" XSTR(BUFLEN) NUMBER_RANGE "%c", name, value, value2, &dummy) == 3) { | |
714 // Looks like a floating-point number -- try again with more lenient format string | |
715 if (sscanf(arg, "%" XSTR(BUFLEN) NAME_RANGE "=" "%" XSTR(BUFLEN) SIGNED_FP_NUMBER_RANGE "%c", name, value, &dummy) == 2) { | |
716 return set_fp_numeric_flag(name, value, origin); | |
717 } | |
718 } | |
719 | |
720 #define VALUE_RANGE "[-kmgtKMGT0123456789]" | |
721 if (sscanf(arg, "%" XSTR(BUFLEN) NAME_RANGE "=" "%" XSTR(BUFLEN) VALUE_RANGE "%c", name, value, &dummy) == 2) { | |
722 return set_numeric_flag(name, value, origin); | |
723 } | |
724 | |
725 return false; | |
726 } | |
727 | |
728 void Arguments::add_string(char*** bldarray, int* count, const char* arg) { | |
729 assert(bldarray != NULL, "illegal argument"); | |
730 | |
731 if (arg == NULL) { | |
732 return; | |
733 } | |
734 | |
735 int index = *count; | |
736 | |
737 // expand the array and add arg to the last element | |
738 (*count)++; | |
739 if (*bldarray == NULL) { | |
740 *bldarray = NEW_C_HEAP_ARRAY(char*, *count); | |
741 } else { | |
742 *bldarray = REALLOC_C_HEAP_ARRAY(char*, *bldarray, *count); | |
743 } | |
744 (*bldarray)[index] = strdup(arg); | |
745 } | |
746 | |
747 void Arguments::build_jvm_args(const char* arg) { | |
748 add_string(&_jvm_args_array, &_num_jvm_args, arg); | |
749 } | |
750 | |
751 void Arguments::build_jvm_flags(const char* arg) { | |
752 add_string(&_jvm_flags_array, &_num_jvm_flags, arg); | |
753 } | |
754 | |
755 // utility function to return a string that concatenates all | |
756 // strings in a given char** array | |
757 const char* Arguments::build_resource_string(char** args, int count) { | |
758 if (args == NULL || count == 0) { | |
759 return NULL; | |
760 } | |
761 size_t length = strlen(args[0]) + 1; // add 1 for the null terminator | |
762 for (int i = 1; i < count; i++) { | |
763 length += strlen(args[i]) + 1; // add 1 for a space | |
764 } | |
765 char* s = NEW_RESOURCE_ARRAY(char, length); | |
766 strcpy(s, args[0]); | |
767 for (int j = 1; j < count; j++) { | |
768 strcat(s, " "); | |
769 strcat(s, args[j]); | |
770 } | |
771 return (const char*) s; | |
772 } | |
773 | |
774 void Arguments::print_on(outputStream* st) { | |
775 st->print_cr("VM Arguments:"); | |
776 if (num_jvm_flags() > 0) { | |
777 st->print("jvm_flags: "); print_jvm_flags_on(st); | |
778 } | |
779 if (num_jvm_args() > 0) { | |
780 st->print("jvm_args: "); print_jvm_args_on(st); | |
781 } | |
782 st->print_cr("java_command: %s", java_command() ? java_command() : "<unknown>"); | |
783 st->print_cr("Launcher Type: %s", _sun_java_launcher); | |
784 } | |
785 | |
786 void Arguments::print_jvm_flags_on(outputStream* st) { | |
787 if (_num_jvm_flags > 0) { | |
788 for (int i=0; i < _num_jvm_flags; i++) { | |
789 st->print("%s ", _jvm_flags_array[i]); | |
790 } | |
791 st->print_cr(""); | |
792 } | |
793 } | |
794 | |
795 void Arguments::print_jvm_args_on(outputStream* st) { | |
796 if (_num_jvm_args > 0) { | |
797 for (int i=0; i < _num_jvm_args; i++) { | |
798 st->print("%s ", _jvm_args_array[i]); | |
799 } | |
800 st->print_cr(""); | |
801 } | |
802 } | |
803 | |
242 | 804 bool Arguments::process_argument(const char* arg, |
805 jboolean ignore_unrecognized, FlagValueOrigin origin) { | |
806 | |
807 JDK_Version since = JDK_Version(); | |
0 | 808 |
3250 | 809 if (parse_argument(arg, origin) || ignore_unrecognized) { |
810 return true; | |
0 | 811 } |
3250 | 812 |
813 const char * const argname = *arg == '+' || *arg == '-' ? arg + 1 : arg; | |
814 if (is_newly_obsolete(arg, &since)) { | |
815 char version[256]; | |
816 since.to_string(version, sizeof(version)); | |
817 warning("ignoring option %s; support was removed in %s", argname, version); | |
818 return true; | |
819 } | |
820 | |
821 jio_fprintf(defaultStream::error_stream(), | |
822 "Unrecognized VM option '%s'\n", argname); | |
823 // allow for commandline "commenting out" options like -XX:#+Verbose | |
824 return arg[0] == '#'; | |
0 | 825 } |
826 | |
827 bool Arguments::process_settings_file(const char* file_name, bool should_exist, jboolean ignore_unrecognized) { | |
828 FILE* stream = fopen(file_name, "rb"); | |
829 if (stream == NULL) { | |
830 if (should_exist) { | |
831 jio_fprintf(defaultStream::error_stream(), | |
832 "Could not open settings file %s\n", file_name); | |
833 return false; | |
834 } else { | |
835 return true; | |
836 } | |
837 } | |
838 | |
839 char token[1024]; | |
840 int pos = 0; | |
841 | |
842 bool in_white_space = true; | |
843 bool in_comment = false; | |
844 bool in_quote = false; | |
845 char quote_c = 0; | |
846 bool result = true; | |
847 | |
848 int c = getc(stream); | |
849 while(c != EOF) { | |
850 if (in_white_space) { | |
851 if (in_comment) { | |
852 if (c == '\n') in_comment = false; | |
853 } else { | |
854 if (c == '#') in_comment = true; | |
855 else if (!isspace(c)) { | |
856 in_white_space = false; | |
857 token[pos++] = c; | |
858 } | |
859 } | |
860 } else { | |
861 if (c == '\n' || (!in_quote && isspace(c))) { | |
862 // token ends at newline, or at unquoted whitespace | |
863 // this allows a way to include spaces in string-valued options | |
864 token[pos] = '\0'; | |
865 logOption(token); | |
866 result &= process_argument(token, ignore_unrecognized, CONFIG_FILE); | |
867 build_jvm_flags(token); | |
868 pos = 0; | |
869 in_white_space = true; | |
870 in_quote = false; | |
871 } else if (!in_quote && (c == '\'' || c == '"')) { | |
872 in_quote = true; | |
873 quote_c = c; | |
874 } else if (in_quote && (c == quote_c)) { | |
875 in_quote = false; | |
876 } else { | |
877 token[pos++] = c; | |
878 } | |
879 } | |
880 c = getc(stream); | |
881 } | |
882 if (pos > 0) { | |
883 token[pos] = '\0'; | |
884 result &= process_argument(token, ignore_unrecognized, CONFIG_FILE); | |
885 build_jvm_flags(token); | |
886 } | |
887 fclose(stream); | |
888 return result; | |
889 } | |
890 | |
891 //============================================================================================================= | |
892 // Parsing of properties (-D) | |
893 | |
894 const char* Arguments::get_property(const char* key) { | |
895 return PropertyList_get_value(system_properties(), key); | |
896 } | |
897 | |
898 bool Arguments::add_property(const char* prop) { | |
899 const char* eq = strchr(prop, '='); | |
900 char* key; | |
901 // ns must be static--its address may be stored in a SystemProperty object. | |
902 const static char ns[1] = {0}; | |
903 char* value = (char *)ns; | |
904 | |
905 size_t key_len = (eq == NULL) ? strlen(prop) : (eq - prop); | |
906 key = AllocateHeap(key_len + 1, "add_property"); | |
907 strncpy(key, prop, key_len); | |
908 key[key_len] = '\0'; | |
909 | |
910 if (eq != NULL) { | |
911 size_t value_len = strlen(prop) - key_len - 1; | |
912 value = AllocateHeap(value_len + 1, "add_property"); | |
913 strncpy(value, &prop[key_len + 1], value_len + 1); | |
914 } | |
915 | |
916 if (strcmp(key, "java.compiler") == 0) { | |
917 process_java_compiler_argument(value); | |
918 FreeHeap(key); | |
919 if (eq != NULL) { | |
920 FreeHeap(value); | |
921 } | |
922 return true; | |
691 | 923 } else if (strcmp(key, "sun.java.command") == 0) { |
0 | 924 _java_command = value; |
925 | |
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926 // Record value in Arguments, but let it get passed to Java. |
691 | 927 } else if (strcmp(key, "sun.java.launcher.pid") == 0) { |
0 | 928 // launcher.pid property is private and is processed |
929 // in process_sun_java_launcher_properties(); | |
930 // the sun.java.launcher property is passed on to the java application | |
931 FreeHeap(key); | |
932 if (eq != NULL) { | |
933 FreeHeap(value); | |
934 } | |
935 return true; | |
691 | 936 } else if (strcmp(key, "java.vendor.url.bug") == 0) { |
0 | 937 // save it in _java_vendor_url_bug, so JVM fatal error handler can access |
938 // its value without going through the property list or making a Java call. | |
939 _java_vendor_url_bug = value; | |
691 | 940 } else if (strcmp(key, "sun.boot.library.path") == 0) { |
941 PropertyList_unique_add(&_system_properties, key, value, true); | |
942 return true; | |
0 | 943 } |
944 // Create new property and add at the end of the list | |
945 PropertyList_unique_add(&_system_properties, key, value); | |
946 return true; | |
947 } | |
948 | |
949 //=========================================================================================================== | |
950 // Setting int/mixed/comp mode flags | |
951 | |
952 void Arguments::set_mode_flags(Mode mode) { | |
953 // Set up default values for all flags. | |
954 // If you add a flag to any of the branches below, | |
955 // add a default value for it here. | |
956 set_java_compiler(false); | |
957 _mode = mode; | |
958 | |
959 // Ensure Agent_OnLoad has the correct initial values. | |
960 // This may not be the final mode; mode may change later in onload phase. | |
961 PropertyList_unique_add(&_system_properties, "java.vm.info", | |
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962 (char*)VM_Version::vm_info_string(), false); |
0 | 963 |
964 UseInterpreter = true; | |
965 UseCompiler = true; | |
966 UseLoopCounter = true; | |
967 | |
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968 #ifndef ZERO |
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969 // Turn these off for mixed and comp. Leave them on for Zero. |
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970 if (FLAG_IS_DEFAULT(UseFastAccessorMethods)) { |
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971 UseFastAccessorMethods = (mode == _int); |
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972 } |
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973 if (FLAG_IS_DEFAULT(UseFastEmptyMethods)) { |
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974 UseFastEmptyMethods = (mode == _int); |
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975 } |
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976 #endif |
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977 |
0 | 978 // Default values may be platform/compiler dependent - |
979 // use the saved values | |
980 ClipInlining = Arguments::_ClipInlining; | |
981 AlwaysCompileLoopMethods = Arguments::_AlwaysCompileLoopMethods; | |
982 UseOnStackReplacement = Arguments::_UseOnStackReplacement; | |
983 BackgroundCompilation = Arguments::_BackgroundCompilation; | |
984 | |
985 // Change from defaults based on mode | |
986 switch (mode) { | |
987 default: | |
988 ShouldNotReachHere(); | |
989 break; | |
990 case _int: | |
991 UseCompiler = false; | |
992 UseLoopCounter = false; | |
993 AlwaysCompileLoopMethods = false; | |
994 UseOnStackReplacement = false; | |
995 break; | |
996 case _mixed: | |
997 // same as default | |
998 break; | |
999 case _comp: | |
1000 UseInterpreter = false; | |
1001 BackgroundCompilation = false; | |
1002 ClipInlining = false; | |
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1003 // Be much more aggressive in tiered mode with -Xcomp and exercise C2 more. |
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1004 // We will first compile a level 3 version (C1 with full profiling), then do one invocation of it and |
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1005 // compile a level 4 (C2) and then continue executing it. |
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1006 if (TieredCompilation) { |
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1007 Tier3InvokeNotifyFreqLog = 0; |
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1008 Tier4InvocationThreshold = 0; |
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1009 } |
0 | 1010 break; |
1011 } | |
1012 } | |
1013 | |
1014 // Conflict: required to use shared spaces (-Xshare:on), but | |
1015 // incompatible command line options were chosen. | |
1016 | |
1017 static void no_shared_spaces() { | |
1018 if (RequireSharedSpaces) { | |
1019 jio_fprintf(defaultStream::error_stream(), | |
1020 "Class data sharing is inconsistent with other specified options.\n"); | |
1021 vm_exit_during_initialization("Unable to use shared archive.", NULL); | |
1022 } else { | |
1023 FLAG_SET_DEFAULT(UseSharedSpaces, false); | |
1024 } | |
1025 } | |
1026 | |
1783 | 1027 void Arguments::set_tiered_flags() { |
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1028 // With tiered, set default policy to AdvancedThresholdPolicy, which is 3. |
1783 | 1029 if (FLAG_IS_DEFAULT(CompilationPolicyChoice)) { |
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1030 FLAG_SET_DEFAULT(CompilationPolicyChoice, 3); |
1783 | 1031 } |
1032 if (CompilationPolicyChoice < 2) { | |
1033 vm_exit_during_initialization( | |
1034 "Incompatible compilation policy selected", NULL); | |
1035 } | |
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1036 // Increase the code cache size - tiered compiles a lot more. |
1783 | 1037 if (FLAG_IS_DEFAULT(ReservedCodeCacheSize)) { |
1038 FLAG_SET_DEFAULT(ReservedCodeCacheSize, ReservedCodeCacheSize * 2); | |
1039 } | |
1040 } | |
1041 | |
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1042 #ifndef KERNEL |
4838 | 1043 static void disable_adaptive_size_policy(const char* collector_name) { |
1044 if (UseAdaptiveSizePolicy) { | |
1045 if (FLAG_IS_CMDLINE(UseAdaptiveSizePolicy)) { | |
1046 warning("disabling UseAdaptiveSizePolicy; it is incompatible with %s.", | |
1047 collector_name); | |
1048 } | |
1049 FLAG_SET_DEFAULT(UseAdaptiveSizePolicy, false); | |
1050 } | |
1051 } | |
1052 | |
0 | 1053 // If the user has chosen ParallelGCThreads > 0, we set UseParNewGC |
1054 // if it's not explictly set or unset. If the user has chosen | |
1055 // UseParNewGC and not explicitly set ParallelGCThreads we | |
1056 // set it, unless this is a single cpu machine. | |
1057 void Arguments::set_parnew_gc_flags() { | |
1064 | 1058 assert(!UseSerialGC && !UseParallelOldGC && !UseParallelGC && !UseG1GC, |
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1059 "control point invariant"); |
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1060 assert(UseParNewGC, "Error"); |
0 | 1061 |
4838 | 1062 // Turn off AdaptiveSizePolicy for parnew until it is complete. |
1063 disable_adaptive_size_policy("UseParNewGC"); | |
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1064 |
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1065 if (ParallelGCThreads == 0) { |
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1066 FLAG_SET_DEFAULT(ParallelGCThreads, |
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1067 Abstract_VM_Version::parallel_worker_threads()); |
1064 | 1068 if (ParallelGCThreads == 1) { |
0 | 1069 FLAG_SET_DEFAULT(UseParNewGC, false); |
1064 | 1070 FLAG_SET_DEFAULT(ParallelGCThreads, 0); |
0 | 1071 } |
1072 } | |
1064 | 1073 if (UseParNewGC) { |
1074 // CDS doesn't work with ParNew yet | |
0 | 1075 no_shared_spaces(); |
1076 | |
695 | 1077 // By default YoungPLABSize and OldPLABSize are set to 4096 and 1024 respectively, |
0 | 1078 // these settings are default for Parallel Scavenger. For ParNew+Tenured configuration |
1079 // we set them to 1024 and 1024. | |
1080 // See CR 6362902. | |
1081 if (FLAG_IS_DEFAULT(YoungPLABSize)) { | |
1082 FLAG_SET_DEFAULT(YoungPLABSize, (intx)1024); | |
1083 } | |
1084 if (FLAG_IS_DEFAULT(OldPLABSize)) { | |
1085 FLAG_SET_DEFAULT(OldPLABSize, (intx)1024); | |
1086 } | |
1087 | |
1064 | 1088 // AlwaysTenure flag should make ParNew promote all at first collection. |
0 | 1089 // See CR 6362902. |
1090 if (AlwaysTenure) { | |
1091 FLAG_SET_CMDLINE(intx, MaxTenuringThreshold, 0); | |
1092 } | |
695 | 1093 // When using compressed oops, we use local overflow stacks, |
1094 // rather than using a global overflow list chained through | |
1095 // the klass word of the object's pre-image. | |
1096 if (UseCompressedOops && !ParGCUseLocalOverflow) { | |
1097 if (!FLAG_IS_DEFAULT(ParGCUseLocalOverflow)) { | |
1098 warning("Forcing +ParGCUseLocalOverflow: needed if using compressed references"); | |
1099 } | |
1100 FLAG_SET_DEFAULT(ParGCUseLocalOverflow, true); | |
1101 } | |
1102 assert(ParGCUseLocalOverflow || !UseCompressedOops, "Error"); | |
0 | 1103 } |
1104 } | |
1105 | |
1106 // Adjust some sizes to suit CMS and/or ParNew needs; these work well on | |
1107 // sparc/solaris for certain applications, but would gain from | |
1108 // further optimization and tuning efforts, and would almost | |
1109 // certainly gain from analysis of platform and environment. | |
1110 void Arguments::set_cms_and_parnew_gc_flags() { | |
1064 | 1111 assert(!UseSerialGC && !UseParallelOldGC && !UseParallelGC, "Error"); |
10
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1112 assert(UseConcMarkSweepGC, "CMS is expected to be on here"); |
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1113 |
0 | 1114 // If we are using CMS, we prefer to UseParNewGC, |
1115 // unless explicitly forbidden. | |
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1116 if (FLAG_IS_DEFAULT(UseParNewGC)) { |
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1117 FLAG_SET_ERGO(bool, UseParNewGC, true); |
0 | 1118 } |
1119 | |
4838 | 1120 // Turn off AdaptiveSizePolicy for CMS until it is complete. |
1121 disable_adaptive_size_policy("UseConcMarkSweepGC"); | |
0 | 1122 |
1123 // In either case, adjust ParallelGCThreads and/or UseParNewGC | |
1124 // as needed. | |
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1125 if (UseParNewGC) { |
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1126 set_parnew_gc_flags(); |
0 | 1127 } |
1128 | |
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1129 // MaxHeapSize is aligned down in collectorPolicy |
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1130 size_t max_heap = align_size_down(MaxHeapSize, |
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1131 CardTableRS::ct_max_alignment_constraint()); |
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1132 |
0 | 1133 // Now make adjustments for CMS |
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1134 intx tenuring_default = (intx)6; |
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1135 size_t young_gen_per_worker = CMSYoungGenPerWorker; |
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1136 |
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1137 // Preferred young gen size for "short" pauses: |
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1138 // upper bound depends on # of threads and NewRatio. |
0 | 1139 const uintx parallel_gc_threads = |
1140 (ParallelGCThreads == 0 ? 1 : ParallelGCThreads); | |
1141 const size_t preferred_max_new_size_unaligned = | |
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1142 MIN2(max_heap/(NewRatio+1), ScaleForWordSize(young_gen_per_worker * parallel_gc_threads)); |
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1143 size_t preferred_max_new_size = |
0 | 1144 align_size_up(preferred_max_new_size_unaligned, os::vm_page_size()); |
1145 | |
1146 // Unless explicitly requested otherwise, size young gen | |
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1147 // for "short" pauses ~ CMSYoungGenPerWorker*ParallelGCThreads |
886
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1148 |
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1149 // If either MaxNewSize or NewRatio is set on the command line, |
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1150 // assume the user is trying to set the size of the young gen. |
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1151 if (FLAG_IS_DEFAULT(MaxNewSize) && FLAG_IS_DEFAULT(NewRatio)) { |
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1152 |
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1153 // Set MaxNewSize to our calculated preferred_max_new_size unless |
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1154 // NewSize was set on the command line and it is larger than |
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1155 // preferred_max_new_size. |
0 | 1156 if (!FLAG_IS_DEFAULT(NewSize)) { // NewSize explicitly set at command-line |
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1157 FLAG_SET_ERGO(uintx, MaxNewSize, MAX2(NewSize, preferred_max_new_size)); |
0 | 1158 } else { |
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1159 FLAG_SET_ERGO(uintx, MaxNewSize, preferred_max_new_size); |
0 | 1160 } |
1064 | 1161 if (PrintGCDetails && Verbose) { |
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1162 // Too early to use gclog_or_tty |
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1163 tty->print_cr("CMS ergo set MaxNewSize: " SIZE_FORMAT, MaxNewSize); |
886
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1164 } |
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1165 |
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1166 // Code along this path potentially sets NewSize and OldSize |
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1167 |
2368
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1168 assert(max_heap >= InitialHeapSize, "Error"); |
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1169 assert(max_heap >= NewSize, "Error"); |
0 | 1170 |
1064 | 1171 if (PrintGCDetails && Verbose) { |
13
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1172 // Too early to use gclog_or_tty |
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1173 tty->print_cr("CMS set min_heap_size: " SIZE_FORMAT |
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1174 " initial_heap_size: " SIZE_FORMAT |
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1175 " max_heap: " SIZE_FORMAT, |
1064 | 1176 min_heap_size(), InitialHeapSize, max_heap); |
13
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1177 } |
2368
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1178 size_t min_new = preferred_max_new_size; |
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1179 if (FLAG_IS_CMDLINE(NewSize)) { |
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1180 min_new = NewSize; |
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1181 } |
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1182 if (max_heap > min_new && min_heap_size() > min_new) { |
0 | 1183 // Unless explicitly requested otherwise, make young gen |
1184 // at least min_new, and at most preferred_max_new_size. | |
1185 if (FLAG_IS_DEFAULT(NewSize)) { | |
13
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1186 FLAG_SET_ERGO(uintx, NewSize, MAX2(NewSize, min_new)); |
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1187 FLAG_SET_ERGO(uintx, NewSize, MIN2(preferred_max_new_size, NewSize)); |
1064 | 1188 if (PrintGCDetails && Verbose) { |
13
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1189 // Too early to use gclog_or_tty |
2368
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1190 tty->print_cr("CMS ergo set NewSize: " SIZE_FORMAT, NewSize); |
13
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1191 } |
0 | 1192 } |
1193 // Unless explicitly requested otherwise, size old gen | |
2368
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1194 // so it's NewRatio x of NewSize. |
0 | 1195 if (FLAG_IS_DEFAULT(OldSize)) { |
1196 if (max_heap > NewSize) { | |
2368
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1197 FLAG_SET_ERGO(uintx, OldSize, MIN2(NewRatio*NewSize, max_heap - NewSize)); |
1064 | 1198 if (PrintGCDetails && Verbose) { |
13
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1199 // Too early to use gclog_or_tty |
2368
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1200 tty->print_cr("CMS ergo set OldSize: " SIZE_FORMAT, OldSize); |
13
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1201 } |
0 | 1202 } |
1203 } | |
1204 } | |
1205 } | |
1206 // Unless explicitly requested otherwise, definitely | |
1207 // promote all objects surviving "tenuring_default" scavenges. | |
1208 if (FLAG_IS_DEFAULT(MaxTenuringThreshold) && | |
1209 FLAG_IS_DEFAULT(SurvivorRatio)) { | |
13
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1210 FLAG_SET_ERGO(intx, MaxTenuringThreshold, tenuring_default); |
0 | 1211 } |
1212 // If we decided above (or user explicitly requested) | |
1213 // `promote all' (via MaxTenuringThreshold := 0), | |
1214 // prefer minuscule survivor spaces so as not to waste | |
1215 // space for (non-existent) survivors | |
1216 if (FLAG_IS_DEFAULT(SurvivorRatio) && MaxTenuringThreshold == 0) { | |
13
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1217 FLAG_SET_ERGO(intx, SurvivorRatio, MAX2((intx)1024, SurvivorRatio)); |
0 | 1218 } |
1219 // If OldPLABSize is set and CMSParPromoteBlocksToClaim is not, | |
1220 // set CMSParPromoteBlocksToClaim equal to OldPLABSize. | |
1221 // This is done in order to make ParNew+CMS configuration to work | |
1222 // with YoungPLABSize and OldPLABSize options. | |
1223 // See CR 6362902. | |
1224 if (!FLAG_IS_DEFAULT(OldPLABSize)) { | |
1225 if (FLAG_IS_DEFAULT(CMSParPromoteBlocksToClaim)) { | |
13
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1226 // OldPLABSize is not the default value but CMSParPromoteBlocksToClaim |
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1227 // is. In this situtation let CMSParPromoteBlocksToClaim follow |
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1228 // the value (either from the command line or ergonomics) of |
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1229 // OldPLABSize. Following OldPLABSize is an ergonomics decision. |
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1230 FLAG_SET_ERGO(uintx, CMSParPromoteBlocksToClaim, OldPLABSize); |
1145
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1231 } else { |
0 | 1232 // OldPLABSize and CMSParPromoteBlocksToClaim are both set. |
1233 // CMSParPromoteBlocksToClaim is a collector-specific flag, so | |
1234 // we'll let it to take precedence. | |
1235 jio_fprintf(defaultStream::error_stream(), | |
886
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1236 "Both OldPLABSize and CMSParPromoteBlocksToClaim" |
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1237 " options are specified for the CMS collector." |
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1238 " CMSParPromoteBlocksToClaim will take precedence.\n"); |
0 | 1239 } |
1240 } | |
1145
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1241 if (!FLAG_IS_DEFAULT(ResizeOldPLAB) && !ResizeOldPLAB) { |
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1242 // OldPLAB sizing manually turned off: Use a larger default setting, |
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1243 // unless it was manually specified. This is because a too-low value |
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|
1244 // will slow down scavenges. |
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1245 if (FLAG_IS_DEFAULT(CMSParPromoteBlocksToClaim)) { |
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1246 FLAG_SET_ERGO(uintx, CMSParPromoteBlocksToClaim, 50); // default value before 6631166 |
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|
1247 } |
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|
1248 } |
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1249 // Overwrite OldPLABSize which is the variable we will internally use everywhere. |
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1250 FLAG_SET_ERGO(uintx, OldPLABSize, CMSParPromoteBlocksToClaim); |
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1251 // If either of the static initialization defaults have changed, note this |
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|
1252 // modification. |
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|
1253 if (!FLAG_IS_DEFAULT(CMSParPromoteBlocksToClaim) || !FLAG_IS_DEFAULT(OldPLABWeight)) { |
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|
1254 CFLS_LAB::modify_initialization(OldPLABSize, OldPLABWeight); |
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|
1255 } |
1284 | 1256 if (PrintGCDetails && Verbose) { |
1257 tty->print_cr("MarkStackSize: %uk MarkStackSizeMax: %uk", | |
1258 MarkStackSize / K, MarkStackSizeMax / K); | |
1259 tty->print_cr("ConcGCThreads: %u", ConcGCThreads); | |
1260 } | |
0 | 1261 } |
1145
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1262 #endif // KERNEL |
0 | 1263 |
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1264 void set_object_alignment() { |
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1265 // Object alignment. |
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|
1266 assert(is_power_of_2(ObjectAlignmentInBytes), "ObjectAlignmentInBytes must be power of 2"); |
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1267 MinObjAlignmentInBytes = ObjectAlignmentInBytes; |
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1268 assert(MinObjAlignmentInBytes >= HeapWordsPerLong * HeapWordSize, "ObjectAlignmentInBytes value is too small"); |
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1269 MinObjAlignment = MinObjAlignmentInBytes / HeapWordSize; |
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1270 assert(MinObjAlignmentInBytes == MinObjAlignment * HeapWordSize, "ObjectAlignmentInBytes value is incorrect"); |
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1271 MinObjAlignmentInBytesMask = MinObjAlignmentInBytes - 1; |
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1272 |
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1273 LogMinObjAlignmentInBytes = exact_log2(ObjectAlignmentInBytes); |
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1274 LogMinObjAlignment = LogMinObjAlignmentInBytes - LogHeapWordSize; |
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1275 |
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1276 // Oop encoding heap max |
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1277 OopEncodingHeapMax = (uint64_t(max_juint) + 1) << LogMinObjAlignmentInBytes; |
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1278 |
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1279 #ifndef KERNEL |
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1280 // Set CMS global values |
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1281 CompactibleFreeListSpace::set_cms_values(); |
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1282 #endif // KERNEL |
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1283 } |
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1284 |
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1285 bool verify_object_alignment() { |
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1286 // Object alignment. |
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1287 if (!is_power_of_2(ObjectAlignmentInBytes)) { |
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1288 jio_fprintf(defaultStream::error_stream(), |
1829
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1289 "error: ObjectAlignmentInBytes=%d must be power of 2\n", |
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1290 (int)ObjectAlignmentInBytes); |
1571
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1291 return false; |
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1292 } |
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1293 if ((int)ObjectAlignmentInBytes < BytesPerLong) { |
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1294 jio_fprintf(defaultStream::error_stream(), |
1829
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1295 "error: ObjectAlignmentInBytes=%d must be greater or equal %d\n", |
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1296 (int)ObjectAlignmentInBytes, BytesPerLong); |
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1297 return false; |
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1298 } |
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1299 // It does not make sense to have big object alignment |
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1300 // since a space lost due to alignment will be greater |
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1301 // then a saved space from compressed oops. |
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1302 if ((int)ObjectAlignmentInBytes > 256) { |
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1303 jio_fprintf(defaultStream::error_stream(), |
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1304 "error: ObjectAlignmentInBytes=%d must not be greater then 256\n", |
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1305 (int)ObjectAlignmentInBytes); |
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1306 return false; |
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1307 } |
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1308 // In case page size is very small. |
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1309 if ((int)ObjectAlignmentInBytes >= os::vm_page_size()) { |
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1310 jio_fprintf(defaultStream::error_stream(), |
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1311 "error: ObjectAlignmentInBytes=%d must be less then page size %d\n", |
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1312 (int)ObjectAlignmentInBytes, os::vm_page_size()); |
1571
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1313 return false; |
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1314 } |
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1315 return true; |
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1316 } |
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1317 |
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1318 inline uintx max_heap_for_compressed_oops() { |
1963 | 1319 // Avoid sign flip. |
1320 if (OopEncodingHeapMax < MaxPermSize + os::vm_page_size()) { | |
1321 return 0; | |
1322 } | |
1323 LP64_ONLY(return OopEncodingHeapMax - MaxPermSize - os::vm_page_size()); | |
1064 | 1324 NOT_LP64(ShouldNotReachHere(); return 0); |
135
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1325 } |
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1326 |
0 | 1327 bool Arguments::should_auto_select_low_pause_collector() { |
1328 if (UseAutoGCSelectPolicy && | |
1329 !FLAG_IS_DEFAULT(MaxGCPauseMillis) && | |
1330 (MaxGCPauseMillis <= AutoGCSelectPauseMillis)) { | |
1331 if (PrintGCDetails) { | |
1332 // Cannot use gclog_or_tty yet. | |
1333 tty->print_cr("Automatic selection of the low pause collector" | |
1334 " based on pause goal of %d (ms)", MaxGCPauseMillis); | |
1335 } | |
1336 return true; | |
1337 } | |
1338 return false; | |
1339 } | |
1340 | |
1341 void Arguments::set_ergonomics_flags() { | |
1342 // Parallel GC is not compatible with sharing. If one specifies | |
1064 | 1343 // that they want sharing explicitly, do not set ergonomics flags. |
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1344 if (DumpSharedSpaces || RequireSharedSpaces) { |
0 | 1345 return; |
1346 } | |
1347 | |
1348 if (os::is_server_class_machine() && !force_client_mode ) { | |
1349 // If no other collector is requested explicitly, | |
1350 // let the VM select the collector based on | |
1351 // machine class and automatic selection policy. | |
1352 if (!UseSerialGC && | |
1353 !UseConcMarkSweepGC && | |
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1354 !UseG1GC && |
0 | 1355 !UseParNewGC && |
1356 !DumpSharedSpaces && | |
1357 FLAG_IS_DEFAULT(UseParallelGC)) { | |
1358 if (should_auto_select_low_pause_collector()) { | |
1359 FLAG_SET_ERGO(bool, UseConcMarkSweepGC, true); | |
1360 } else { | |
1361 FLAG_SET_ERGO(bool, UseParallelGC, true); | |
1362 } | |
1363 no_shared_spaces(); | |
1364 } | |
1365 } | |
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1366 |
1010 | 1367 #ifndef ZERO |
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1368 #ifdef _LP64 |
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1369 // Check that UseCompressedOops can be set with the max heap size allocated |
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1370 // by ergonomics. |
187 | 1371 if (MaxHeapSize <= max_heap_for_compressed_oops()) { |
1783 | 1372 #if !defined(COMPILER1) || defined(TIERED) |
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1373 // disable UseCompressedOops by default on MacOS X until 7118647 is fixed |
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1374 #ifndef __APPLE__ |
2228 | 1375 if (FLAG_IS_DEFAULT(UseCompressedOops)) { |
932 | 1376 FLAG_SET_ERGO(bool, UseCompressedOops, true); |
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1377 } |
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1378 #endif // !__APPLE__ |
1060 | 1379 #endif |
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1380 #ifdef _WIN64 |
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1381 if (UseLargePages && UseCompressedOops) { |
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1382 // Cannot allocate guard pages for implicit checks in indexed addressing |
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1383 // mode, when large pages are specified on windows. |
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1384 // This flag could be switched ON if narrow oop base address is set to 0, |
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1385 // see code in Universe::initialize_heap(). |
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1386 Universe::set_narrow_oop_use_implicit_null_checks(false); |
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1387 } |
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1388 #endif // _WIN64 |
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1389 } else { |
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1390 if (UseCompressedOops && !FLAG_IS_DEFAULT(UseCompressedOops)) { |
344 | 1391 warning("Max heap size too large for Compressed Oops"); |
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1392 FLAG_SET_DEFAULT(UseCompressedOops, false); |
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1393 } |
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1394 } |
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1395 // Also checks that certain machines are slower with compressed oops |
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1396 // in vm_version initialization code. |
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1397 #endif // _LP64 |
1010 | 1398 #endif // !ZERO |
0 | 1399 } |
1400 | |
1401 void Arguments::set_parallel_gc_flags() { | |
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1402 assert(UseParallelGC || UseParallelOldGC, "Error"); |
4879 | 1403 // Enable ParallelOld unless it was explicitly disabled (cmd line or rc file). |
1404 if (FLAG_IS_DEFAULT(UseParallelOldGC)) { | |
1405 FLAG_SET_DEFAULT(UseParallelOldGC, true); | |
0 | 1406 } |
4879 | 1407 FLAG_SET_DEFAULT(UseParallelGC, true); |
0 | 1408 |
1409 // If no heap maximum was requested explicitly, use some reasonable fraction | |
1410 // of the physical memory, up to a maximum of 1GB. | |
1411 if (UseParallelGC) { | |
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1412 FLAG_SET_DEFAULT(ParallelGCThreads, |
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1413 Abstract_VM_Version::parallel_worker_threads()); |
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1414 |
0 | 1415 // If InitialSurvivorRatio or MinSurvivorRatio were not specified, but the |
1416 // SurvivorRatio has been set, reset their default values to SurvivorRatio + | |
1417 // 2. By doing this we make SurvivorRatio also work for Parallel Scavenger. | |
1418 // See CR 6362902 for details. | |
1419 if (!FLAG_IS_DEFAULT(SurvivorRatio)) { | |
1420 if (FLAG_IS_DEFAULT(InitialSurvivorRatio)) { | |
1421 FLAG_SET_DEFAULT(InitialSurvivorRatio, SurvivorRatio + 2); | |
1422 } | |
1423 if (FLAG_IS_DEFAULT(MinSurvivorRatio)) { | |
1424 FLAG_SET_DEFAULT(MinSurvivorRatio, SurvivorRatio + 2); | |
1425 } | |
1426 } | |
1427 | |
1428 if (UseParallelOldGC) { | |
1429 // Par compact uses lower default values since they are treated as | |
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1430 // minimums. These are different defaults because of the different |
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1431 // interpretation and are not ergonomically set. |
0 | 1432 if (FLAG_IS_DEFAULT(MarkSweepDeadRatio)) { |
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1433 FLAG_SET_DEFAULT(MarkSweepDeadRatio, 1); |
0 | 1434 } |
1435 if (FLAG_IS_DEFAULT(PermMarkSweepDeadRatio)) { | |
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1436 FLAG_SET_DEFAULT(PermMarkSweepDeadRatio, 5); |
0 | 1437 } |
1438 } | |
1439 } | |
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1440 if (UseNUMA) { |
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1441 if (FLAG_IS_DEFAULT(MinHeapDeltaBytes)) { |
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1442 FLAG_SET_DEFAULT(MinHeapDeltaBytes, 64*M); |
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1443 } |
3885 | 1444 // For those collectors or operating systems (eg, Windows) that do |
1445 // not support full UseNUMA, we will map to UseNUMAInterleaving for now | |
1446 UseNUMAInterleaving = true; | |
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1447 } |
0 | 1448 } |
1449 | |
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1450 void Arguments::set_g1_gc_flags() { |
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1451 assert(UseG1GC, "Error"); |
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1452 #ifdef COMPILER1 |
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1453 FastTLABRefill = false; |
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1454 #endif |
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1455 FLAG_SET_DEFAULT(ParallelGCThreads, |
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1456 Abstract_VM_Version::parallel_worker_threads()); |
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1457 if (ParallelGCThreads == 0) { |
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1458 FLAG_SET_DEFAULT(ParallelGCThreads, |
751 | 1459 Abstract_VM_Version::parallel_worker_threads()); |
342
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1460 } |
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1461 no_shared_spaces(); |
751 | 1462 |
1284 | 1463 if (FLAG_IS_DEFAULT(MarkStackSize)) { |
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1464 FLAG_SET_DEFAULT(MarkStackSize, 128 * TASKQUEUE_SIZE); |
1284 | 1465 } |
1466 if (PrintGCDetails && Verbose) { | |
1467 tty->print_cr("MarkStackSize: %uk MarkStackSizeMax: %uk", | |
1468 MarkStackSize / K, MarkStackSizeMax / K); | |
1469 tty->print_cr("ConcGCThreads: %u", ConcGCThreads); | |
1470 } | |
1356 | 1471 |
1472 if (FLAG_IS_DEFAULT(GCTimeRatio) || GCTimeRatio == 0) { | |
1473 // In G1, we want the default GC overhead goal to be higher than | |
1474 // say in PS. So we set it here to 10%. Otherwise the heap might | |
1475 // be expanded more aggressively than we would like it to. In | |
1476 // fact, even 10% seems to not be high enough in some cases | |
1477 // (especially small GC stress tests that the main thing they do | |
1478 // is allocation). We might consider increase it further. | |
1479 FLAG_SET_DEFAULT(GCTimeRatio, 9); | |
1480 } | |
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1481 } |
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1482 |
1064 | 1483 void Arguments::set_heap_size() { |
1484 if (!FLAG_IS_DEFAULT(DefaultMaxRAMFraction)) { | |
1485 // Deprecated flag | |
1486 FLAG_SET_CMDLINE(uintx, MaxRAMFraction, DefaultMaxRAMFraction); | |
1487 } | |
1488 | |
1489 const julong phys_mem = | |
1490 FLAG_IS_DEFAULT(MaxRAM) ? MIN2(os::physical_memory(), (julong)MaxRAM) | |
1491 : (julong)MaxRAM; | |
1492 | |
1493 // If the maximum heap size has not been set with -Xmx, | |
1494 // then set it as fraction of the size of physical memory, | |
1495 // respecting the maximum and minimum sizes of the heap. | |
342
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1496 if (FLAG_IS_DEFAULT(MaxHeapSize)) { |
1064 | 1497 julong reasonable_max = phys_mem / MaxRAMFraction; |
1498 | |
1499 if (phys_mem <= MaxHeapSize * MinRAMFraction) { | |
1500 // Small physical memory, so use a minimum fraction of it for the heap | |
1501 reasonable_max = phys_mem / MinRAMFraction; | |
1502 } else { | |
1503 // Not-small physical memory, so require a heap at least | |
1504 // as large as MaxHeapSize | |
1505 reasonable_max = MAX2(reasonable_max, (julong)MaxHeapSize); | |
1506 } | |
1507 if (!FLAG_IS_DEFAULT(ErgoHeapSizeLimit) && ErgoHeapSizeLimit != 0) { | |
1508 // Limit the heap size to ErgoHeapSizeLimit | |
1509 reasonable_max = MIN2(reasonable_max, (julong)ErgoHeapSizeLimit); | |
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1510 } |
1064 | 1511 if (UseCompressedOops) { |
1512 // Limit the heap size to the maximum possible when using compressed oops | |
1963 | 1513 julong max_coop_heap = (julong)max_heap_for_compressed_oops(); |
1514 if (HeapBaseMinAddress + MaxHeapSize < max_coop_heap) { | |
1515 // Heap should be above HeapBaseMinAddress to get zero based compressed oops | |
1516 // but it should be not less than default MaxHeapSize. | |
1517 max_coop_heap -= HeapBaseMinAddress; | |
1518 } | |
1519 reasonable_max = MIN2(reasonable_max, max_coop_heap); | |
1064 | 1520 } |
1521 reasonable_max = os::allocatable_physical_memory(reasonable_max); | |
1522 | |
1523 if (!FLAG_IS_DEFAULT(InitialHeapSize)) { | |
1524 // An initial heap size was specified on the command line, | |
1525 // so be sure that the maximum size is consistent. Done | |
1526 // after call to allocatable_physical_memory because that | |
1527 // method might reduce the allocation size. | |
1528 reasonable_max = MAX2(reasonable_max, (julong)InitialHeapSize); | |
1529 } | |
1530 | |
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1531 if (PrintGCDetails && Verbose) { |
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1532 // Cannot use gclog_or_tty yet. |
1064 | 1533 tty->print_cr(" Maximum heap size " SIZE_FORMAT, reasonable_max); |
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1534 } |
1064 | 1535 FLAG_SET_ERGO(uintx, MaxHeapSize, (uintx)reasonable_max); |
1536 } | |
1537 | |
1538 // If the initial_heap_size has not been set with InitialHeapSize | |
1539 // or -Xms, then set it as fraction of the size of physical memory, | |
1540 // respecting the maximum and minimum sizes of the heap. | |
1541 if (FLAG_IS_DEFAULT(InitialHeapSize)) { | |
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1542 julong reasonable_minimum = (julong)(OldSize + NewSize); |
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1543 |
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1544 reasonable_minimum = MIN2(reasonable_minimum, (julong)MaxHeapSize); |
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1545 |
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1546 reasonable_minimum = os::allocatable_physical_memory(reasonable_minimum); |
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1547 |
1064 | 1548 julong reasonable_initial = phys_mem / InitialRAMFraction; |
1549 | |
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1550 reasonable_initial = MAX2(reasonable_initial, reasonable_minimum); |
1064 | 1551 reasonable_initial = MIN2(reasonable_initial, (julong)MaxHeapSize); |
1552 | |
1553 reasonable_initial = os::allocatable_physical_memory(reasonable_initial); | |
1554 | |
1555 if (PrintGCDetails && Verbose) { | |
1556 // Cannot use gclog_or_tty yet. | |
1557 tty->print_cr(" Initial heap size " SIZE_FORMAT, (uintx)reasonable_initial); | |
1074
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1558 tty->print_cr(" Minimum heap size " SIZE_FORMAT, (uintx)reasonable_minimum); |
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1559 } |
1064 | 1560 FLAG_SET_ERGO(uintx, InitialHeapSize, (uintx)reasonable_initial); |
1074
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1561 set_min_heap_size((uintx)reasonable_minimum); |
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1562 } |
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1563 } |
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1564 |
0 | 1565 // This must be called after ergonomics because we want bytecode rewriting |
1566 // if the server compiler is used, or if UseSharedSpaces is disabled. | |
1567 void Arguments::set_bytecode_flags() { | |
1568 // Better not attempt to store into a read-only space. | |
1569 if (UseSharedSpaces) { | |
1570 FLAG_SET_DEFAULT(RewriteBytecodes, false); | |
1571 FLAG_SET_DEFAULT(RewriteFrequentPairs, false); | |
1572 } | |
1573 | |
1574 if (!RewriteBytecodes) { | |
1575 FLAG_SET_DEFAULT(RewriteFrequentPairs, false); | |
1576 } | |
1577 } | |
1578 | |
1579 // Aggressive optimization flags -XX:+AggressiveOpts | |
1580 void Arguments::set_aggressive_opts_flags() { | |
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1581 #ifdef COMPILER2 |
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6395208: Elide autoboxing for calls to HashMap.get(int) and HashMap.get(long)
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parents:
0
diff
changeset
|
1582 if (AggressiveOpts || !FLAG_IS_DEFAULT(AutoBoxCacheMax)) { |
ff5961f4c095
6395208: Elide autoboxing for calls to HashMap.get(int) and HashMap.get(long)
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parents:
0
diff
changeset
|
1583 if (FLAG_IS_DEFAULT(EliminateAutoBox)) { |
ff5961f4c095
6395208: Elide autoboxing for calls to HashMap.get(int) and HashMap.get(long)
never
parents:
0
diff
changeset
|
1584 FLAG_SET_DEFAULT(EliminateAutoBox, true); |
ff5961f4c095
6395208: Elide autoboxing for calls to HashMap.get(int) and HashMap.get(long)
never
parents:
0
diff
changeset
|
1585 } |
ff5961f4c095
6395208: Elide autoboxing for calls to HashMap.get(int) and HashMap.get(long)
never
parents:
0
diff
changeset
|
1586 if (FLAG_IS_DEFAULT(AutoBoxCacheMax)) { |
ff5961f4c095
6395208: Elide autoboxing for calls to HashMap.get(int) and HashMap.get(long)
never
parents:
0
diff
changeset
|
1587 FLAG_SET_DEFAULT(AutoBoxCacheMax, 20000); |
ff5961f4c095
6395208: Elide autoboxing for calls to HashMap.get(int) and HashMap.get(long)
never
parents:
0
diff
changeset
|
1588 } |
ff5961f4c095
6395208: Elide autoboxing for calls to HashMap.get(int) and HashMap.get(long)
never
parents:
0
diff
changeset
|
1589 |
ff5961f4c095
6395208: Elide autoboxing for calls to HashMap.get(int) and HashMap.get(long)
never
parents:
0
diff
changeset
|
1590 // Feed the cache size setting into the JDK |
ff5961f4c095
6395208: Elide autoboxing for calls to HashMap.get(int) and HashMap.get(long)
never
parents:
0
diff
changeset
|
1591 char buffer[1024]; |
513
2328d1d3f8cf
6781583: Hotspot build fails on linux 64 bit platform with gcc 4.3.2
xlu
parents:
489
diff
changeset
|
1592 sprintf(buffer, "java.lang.Integer.IntegerCache.high=" INTX_FORMAT, AutoBoxCacheMax); |
17
ff5961f4c095
6395208: Elide autoboxing for calls to HashMap.get(int) and HashMap.get(long)
never
parents:
0
diff
changeset
|
1593 add_property(buffer); |
ff5961f4c095
6395208: Elide autoboxing for calls to HashMap.get(int) and HashMap.get(long)
never
parents:
0
diff
changeset
|
1594 } |
416
b6cfd754403d
6649622: HotSpot Biased locking needs tuning on latest CPUs
never
parents:
363
diff
changeset
|
1595 if (AggressiveOpts && FLAG_IS_DEFAULT(BiasedLockingStartupDelay)) { |
b6cfd754403d
6649622: HotSpot Biased locking needs tuning on latest CPUs
never
parents:
363
diff
changeset
|
1596 FLAG_SET_DEFAULT(BiasedLockingStartupDelay, 500); |
b6cfd754403d
6649622: HotSpot Biased locking needs tuning on latest CPUs
never
parents:
363
diff
changeset
|
1597 } |
17
ff5961f4c095
6395208: Elide autoboxing for calls to HashMap.get(int) and HashMap.get(long)
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parents:
0
diff
changeset
|
1598 #endif |
ff5961f4c095
6395208: Elide autoboxing for calls to HashMap.get(int) and HashMap.get(long)
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parents:
0
diff
changeset
|
1599 |
0 | 1600 if (AggressiveOpts) { |
61 | 1601 // Sample flag setting code |
1602 // if (FLAG_IS_DEFAULT(EliminateZeroing)) { | |
1603 // FLAG_SET_DEFAULT(EliminateZeroing, true); | |
1604 // } | |
0 | 1605 } |
1606 } | |
1607 | |
1608 //=========================================================================================================== | |
1609 // Parsing of java.compiler property | |
1610 | |
1611 void Arguments::process_java_compiler_argument(char* arg) { | |
1612 // For backwards compatibility, Djava.compiler=NONE or "" | |
1613 // causes us to switch to -Xint mode UNLESS -Xdebug | |
1614 // is also specified. | |
1615 if (strlen(arg) == 0 || strcasecmp(arg, "NONE") == 0) { | |
1616 set_java_compiler(true); // "-Djava.compiler[=...]" most recently seen. | |
1617 } | |
1618 } | |
1619 | |
1620 void Arguments::process_java_launcher_argument(const char* launcher, void* extra_info) { | |
1621 _sun_java_launcher = strdup(launcher); | |
2302
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
1622 if (strcmp("gamma", _sun_java_launcher) == 0) { |
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
1623 _created_by_gamma_launcher = true; |
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
1624 } |
0 | 1625 } |
1626 | |
1627 bool Arguments::created_by_java_launcher() { | |
1628 assert(_sun_java_launcher != NULL, "property must have value"); | |
1629 return strcmp(DEFAULT_JAVA_LAUNCHER, _sun_java_launcher) != 0; | |
1630 } | |
1631 | |
2302
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
1632 bool Arguments::created_by_gamma_launcher() { |
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
1633 return _created_by_gamma_launcher; |
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
1634 } |
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
1635 |
0 | 1636 //=========================================================================================================== |
1637 // Parsing of main arguments | |
1638 | |
1244
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
1639 bool Arguments::verify_interval(uintx val, uintx min, |
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
1640 uintx max, const char* name) { |
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
1641 // Returns true iff value is in the inclusive interval [min..max] |
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
1642 // false, otherwise. |
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
1643 if (val >= min && val <= max) { |
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
1644 return true; |
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
1645 } |
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
1646 jio_fprintf(defaultStream::error_stream(), |
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
1647 "%s of " UINTX_FORMAT " is invalid; must be between " UINTX_FORMAT |
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
1648 " and " UINTX_FORMAT "\n", |
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
1649 name, val, min, max); |
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
1650 return false; |
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
1651 } |
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
1652 |
1744
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
ptisnovs
parents:
1681
diff
changeset
|
1653 bool Arguments::verify_min_value(intx val, intx min, const char* name) { |
2366
1fb790245268
6820066: Check that -XX:ParGCArrayScanChunk has a value larger than zero.
jwilhelm
parents:
2362
diff
changeset
|
1654 // Returns true if given value is at least specified min threshold |
1744
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
ptisnovs
parents:
1681
diff
changeset
|
1655 // false, otherwise. |
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
ptisnovs
parents:
1681
diff
changeset
|
1656 if (val >= min ) { |
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
ptisnovs
parents:
1681
diff
changeset
|
1657 return true; |
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
ptisnovs
parents:
1681
diff
changeset
|
1658 } |
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
ptisnovs
parents:
1681
diff
changeset
|
1659 jio_fprintf(defaultStream::error_stream(), |
2366
1fb790245268
6820066: Check that -XX:ParGCArrayScanChunk has a value larger than zero.
jwilhelm
parents:
2362
diff
changeset
|
1660 "%s of " INTX_FORMAT " is invalid; must be at least " INTX_FORMAT "\n", |
1744
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
ptisnovs
parents:
1681
diff
changeset
|
1661 name, val, min); |
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
ptisnovs
parents:
1681
diff
changeset
|
1662 return false; |
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
ptisnovs
parents:
1681
diff
changeset
|
1663 } |
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
ptisnovs
parents:
1681
diff
changeset
|
1664 |
0 | 1665 bool Arguments::verify_percentage(uintx value, const char* name) { |
1666 if (value <= 100) { | |
1667 return true; | |
1668 } | |
1669 jio_fprintf(defaultStream::error_stream(), | |
1670 "%s of " UINTX_FORMAT " is invalid; must be between 0 and 100\n", | |
1671 name, value); | |
1672 return false; | |
1673 } | |
1674 | |
1064 | 1675 static void force_serial_gc() { |
0 | 1676 FLAG_SET_DEFAULT(UseSerialGC, true); |
1677 FLAG_SET_DEFAULT(UseParNewGC, false); | |
1678 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
|
1679 FLAG_SET_DEFAULT(CMSIncrementalMode, false); // special CMS suboption |
0 | 1680 FLAG_SET_DEFAULT(UseParallelGC, false); |
1681 FLAG_SET_DEFAULT(UseParallelOldGC, false); | |
342
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
135
diff
changeset
|
1682 FLAG_SET_DEFAULT(UseG1GC, false); |
0 | 1683 } |
1684 | |
1685 static bool verify_serial_gc_flags() { | |
1686 return (UseSerialGC && | |
945
68ef3fdcdb76
6872136: CMS: confusing message may be printed when a collector is switched off implicitly
ysr
parents:
932
diff
changeset
|
1687 !(UseParNewGC || (UseConcMarkSweepGC || CMSIncrementalMode) || UseG1GC || |
342
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
135
diff
changeset
|
1688 UseParallelGC || UseParallelOldGC)); |
0 | 1689 } |
1690 | |
3767
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3349
diff
changeset
|
1691 // check if do gclog rotation |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3349
diff
changeset
|
1692 // +UseGCLogFileRotation is a must, |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3349
diff
changeset
|
1693 // no gc log rotation when log file not supplied or |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3349
diff
changeset
|
1694 // NumberOfGCLogFiles is 0, or GCLogFileSize is 0 |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3349
diff
changeset
|
1695 void check_gclog_consistency() { |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3349
diff
changeset
|
1696 if (UseGCLogFileRotation) { |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3349
diff
changeset
|
1697 if ((Arguments::gc_log_filename() == NULL) || |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3349
diff
changeset
|
1698 (NumberOfGCLogFiles == 0) || |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3349
diff
changeset
|
1699 (GCLogFileSize == 0)) { |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3349
diff
changeset
|
1700 jio_fprintf(defaultStream::output_stream(), |
3769
ef2d1b8f2dd4
7051430: CMS: ongoing CMS cycle should terminate abruptly to allow prompt JVM termination at exit
ysr
parents:
3767
diff
changeset
|
1701 "To enable GC log rotation, use -Xloggc:<filename> -XX:+UseGCLogFileRotation -XX:NumberOfGCLogFiles=<num_of_files> -XX:GCLogFileSize=<num_of_size>\n" |
3767
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3349
diff
changeset
|
1702 "where num_of_file > 0 and num_of_size > 0\n" |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3349
diff
changeset
|
1703 "GC log rotation is turned off\n"); |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3349
diff
changeset
|
1704 UseGCLogFileRotation = false; |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3349
diff
changeset
|
1705 } |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3349
diff
changeset
|
1706 } |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3349
diff
changeset
|
1707 |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3349
diff
changeset
|
1708 if (UseGCLogFileRotation && GCLogFileSize < 8*K) { |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3349
diff
changeset
|
1709 FLAG_SET_CMDLINE(uintx, GCLogFileSize, 8*K); |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3349
diff
changeset
|
1710 jio_fprintf(defaultStream::output_stream(), |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3349
diff
changeset
|
1711 "GCLogFileSize changed to minimum 8K\n"); |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3349
diff
changeset
|
1712 } |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3349
diff
changeset
|
1713 } |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3349
diff
changeset
|
1714 |
10
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1715 // Check consistency of GC selection |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1716 bool Arguments::check_gc_consistency() { |
3767
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3349
diff
changeset
|
1717 check_gclog_consistency(); |
10
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1718 bool status = true; |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1719 // 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
|
1720 // 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
|
1721 // 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
|
1722 // 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
|
1723 // 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
|
1724 // 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
|
1725 // select conflicting combinations. |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1726 uint i = 0; |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1727 if (UseSerialGC) i++; |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1728 if (UseConcMarkSweepGC || UseParNewGC) i++; |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1729 if (UseParallelGC || UseParallelOldGC) i++; |
845
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
751
diff
changeset
|
1730 if (UseG1GC) i++; |
10
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1731 if (i > 1) { |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1732 jio_fprintf(defaultStream::error_stream(), |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1733 "Conflicting collector combinations in option list; " |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1734 "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
|
1735 "allowed\n"); |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1736 status = false; |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1737 } |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1738 |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1739 return status; |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1740 } |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1741 |
1744
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
ptisnovs
parents:
1681
diff
changeset
|
1742 // Check stack pages settings |
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1743 bool Arguments::check_stack_pages() |
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1744 { |
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1745 bool status = true; |
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1746 status = status && verify_min_value(StackYellowPages, 1, "StackYellowPages"); |
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1747 status = status && verify_min_value(StackRedPages, 1, "StackRedPages"); |
1867
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1748 // greater stack shadow pages can't generate instruction to bang stack |
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1749 status = status && verify_interval(StackShadowPages, 1, 50, "StackShadowPages"); |
1744
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1750 return status; |
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1751 } |
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1752 |
0 | 1753 // Check the consistency of vm_init_args |
1754 bool Arguments::check_vm_args_consistency() { | |
1755 // Method for adding checks for flag consistency. | |
1756 // The intent is to warn the user of all possible conflicts, | |
1757 // before returning an error. | |
1758 // Note: Needs platform-dependent factoring. | |
1759 bool status = true; | |
1760 | |
1761 #if ( (defined(COMPILER2) && defined(SPARC))) | |
1762 // NOTE: The call to VM_Version_init depends on the fact that VM_Version_init | |
1763 // on sparc doesn't require generation of a stub as is the case on, e.g., | |
1764 // x86. Normally, VM_Version_init must be called from init_globals in | |
1765 // init.cpp, which is called by the initial java thread *after* arguments | |
1766 // have been parsed. VM_Version_init gets called twice on sparc. | |
1767 extern void VM_Version_init(); | |
1768 VM_Version_init(); | |
1769 if (!VM_Version::has_v9()) { | |
1770 jio_fprintf(defaultStream::error_stream(), | |
1771 "V8 Machine detected, Server requires V9\n"); | |
1772 status = false; | |
1773 } | |
1774 #endif /* COMPILER2 && SPARC */ | |
1775 | |
1776 // Allow both -XX:-UseStackBanging and -XX:-UseBoundThreads in non-product | |
1777 // builds so the cost of stack banging can be measured. | |
1778 #if (defined(PRODUCT) && defined(SOLARIS)) | |
1779 if (!UseBoundThreads && !UseStackBanging) { | |
1780 jio_fprintf(defaultStream::error_stream(), | |
1781 "-UseStackBanging conflicts with -UseBoundThreads\n"); | |
1782 | |
1783 status = false; | |
1784 } | |
1785 #endif | |
1786 | |
1787 if (TLABRefillWasteFraction == 0) { | |
1788 jio_fprintf(defaultStream::error_stream(), | |
1789 "TLABRefillWasteFraction should be a denominator, " | |
1790 "not " SIZE_FORMAT "\n", | |
1791 TLABRefillWasteFraction); | |
1792 status = false; | |
1793 } | |
1794 | |
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1795 status = status && verify_percentage(AdaptiveSizePolicyWeight, |
0 | 1796 "AdaptiveSizePolicyWeight"); |
10
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1797 status = status && verify_percentage(AdaptivePermSizeWeight, "AdaptivePermSizeWeight"); |
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1798 status = status && verify_percentage(ThresholdTolerance, "ThresholdTolerance"); |
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1799 status = status && verify_percentage(MinHeapFreeRatio, "MinHeapFreeRatio"); |
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1800 status = status && verify_percentage(MaxHeapFreeRatio, "MaxHeapFreeRatio"); |
0 | 1801 |
1802 if (MinHeapFreeRatio > MaxHeapFreeRatio) { | |
1803 jio_fprintf(defaultStream::error_stream(), | |
1804 "MinHeapFreeRatio (" UINTX_FORMAT ") must be less than or " | |
1805 "equal to MaxHeapFreeRatio (" UINTX_FORMAT ")\n", | |
1806 MinHeapFreeRatio, MaxHeapFreeRatio); | |
1807 status = false; | |
1808 } | |
1809 // Keeping the heap 100% free is hard ;-) so limit it to 99%. | |
1810 MinHeapFreeRatio = MIN2(MinHeapFreeRatio, (uintx) 99); | |
1811 | |
1812 if (FullGCALot && FLAG_IS_DEFAULT(MarkSweepAlwaysCompactCount)) { | |
1813 MarkSweepAlwaysCompactCount = 1; // Move objects every gc. | |
1814 } | |
1815 | |
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1816 if (UseParallelOldGC && ParallelOldGCSplitALot) { |
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1817 // Settings to encourage splitting. |
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1818 if (!FLAG_IS_CMDLINE(NewRatio)) { |
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1819 FLAG_SET_CMDLINE(intx, NewRatio, 2); |
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|
1820 } |
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1821 if (!FLAG_IS_CMDLINE(ScavengeBeforeFullGC)) { |
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1822 FLAG_SET_CMDLINE(bool, ScavengeBeforeFullGC, false); |
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1823 } |
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1824 } |
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|
1825 |
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1826 status = status && verify_percentage(GCHeapFreeLimit, "GCHeapFreeLimit"); |
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1827 status = status && verify_percentage(GCTimeLimit, "GCTimeLimit"); |
0 | 1828 if (GCTimeLimit == 100) { |
1829 // Turn off gc-overhead-limit-exceeded checks | |
1830 FLAG_SET_DEFAULT(UseGCOverheadLimit, false); | |
1831 } | |
1832 | |
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1833 status = status && verify_percentage(GCHeapFreeLimit, "GCHeapFreeLimit"); |
0 | 1834 |
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1835 status = status && check_gc_consistency(); |
1744
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1836 status = status && check_stack_pages(); |
0 | 1837 |
1838 if (_has_alloc_profile) { | |
1839 if (UseParallelGC || UseParallelOldGC) { | |
1840 jio_fprintf(defaultStream::error_stream(), | |
1841 "error: invalid argument combination.\n" | |
1842 "Allocation profiling (-Xaprof) cannot be used together with " | |
1843 "Parallel GC (-XX:+UseParallelGC or -XX:+UseParallelOldGC).\n"); | |
1844 status = false; | |
1845 } | |
1846 if (UseConcMarkSweepGC) { | |
1847 jio_fprintf(defaultStream::error_stream(), | |
1848 "error: invalid argument combination.\n" | |
1849 "Allocation profiling (-Xaprof) cannot be used together with " | |
1850 "the CMS collector (-XX:+UseConcMarkSweepGC).\n"); | |
1851 status = false; | |
1852 } | |
1853 } | |
1854 | |
1855 if (CMSIncrementalMode) { | |
1856 if (!UseConcMarkSweepGC) { | |
1857 jio_fprintf(defaultStream::error_stream(), | |
1858 "error: invalid argument combination.\n" | |
1859 "The CMS collector (-XX:+UseConcMarkSweepGC) must be " | |
1860 "selected in order\nto use CMSIncrementalMode.\n"); | |
1861 status = false; | |
1862 } else { | |
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1863 status = status && verify_percentage(CMSIncrementalDutyCycle, |
0 | 1864 "CMSIncrementalDutyCycle"); |
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1865 status = status && verify_percentage(CMSIncrementalDutyCycleMin, |
0 | 1866 "CMSIncrementalDutyCycleMin"); |
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1867 status = status && verify_percentage(CMSIncrementalSafetyFactor, |
0 | 1868 "CMSIncrementalSafetyFactor"); |
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1869 status = status && verify_percentage(CMSIncrementalOffset, |
0 | 1870 "CMSIncrementalOffset"); |
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1871 status = status && verify_percentage(CMSExpAvgFactor, |
0 | 1872 "CMSExpAvgFactor"); |
1873 // If it was not set on the command line, set | |
1874 // CMSInitiatingOccupancyFraction to 1 so icms can initiate cycles early. | |
1875 if (CMSInitiatingOccupancyFraction < 0) { | |
1876 FLAG_SET_DEFAULT(CMSInitiatingOccupancyFraction, 1); | |
1877 } | |
1878 } | |
1879 } | |
1880 | |
1881 // CMS space iteration, which FLSVerifyAllHeapreferences entails, | |
1882 // insists that we hold the requisite locks so that the iteration is | |
1883 // MT-safe. For the verification at start-up and shut-down, we don't | |
1884 // yet have a good way of acquiring and releasing these locks, | |
1885 // which are not visible at the CollectedHeap level. We want to | |
1886 // be able to acquire these locks and then do the iteration rather | |
1887 // than just disable the lock verification. This will be fixed under | |
1888 // bug 4788986. | |
1889 if (UseConcMarkSweepGC && FLSVerifyAllHeapReferences) { | |
1890 if (VerifyGCStartAt == 0) { | |
1891 warning("Heap verification at start-up disabled " | |
1892 "(due to current incompatibility with FLSVerifyAllHeapReferences)"); | |
1893 VerifyGCStartAt = 1; // Disable verification at start-up | |
1894 } | |
1895 if (VerifyBeforeExit) { | |
1896 warning("Heap verification at shutdown disabled " | |
1897 "(due to current incompatibility with FLSVerifyAllHeapReferences)"); | |
1898 VerifyBeforeExit = false; // Disable verification at shutdown | |
1899 } | |
1900 } | |
1901 | |
1902 // Note: only executed in non-PRODUCT mode | |
1903 if (!UseAsyncConcMarkSweepGC && | |
1904 (ExplicitGCInvokesConcurrent || | |
1905 ExplicitGCInvokesConcurrentAndUnloadsClasses)) { | |
1906 jio_fprintf(defaultStream::error_stream(), | |
1907 "error: +ExplictGCInvokesConcurrent[AndUnloadsClasses] conflicts" | |
1908 " with -UseAsyncConcMarkSweepGC"); | |
1909 status = false; | |
1910 } | |
1911 | |
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1912 status = status && verify_min_value(ParGCArrayScanChunk, 1, "ParGCArrayScanChunk"); |
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1913 |
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1914 #ifndef SERIALGC |
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1915 if (UseG1GC) { |
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1916 status = status && verify_percentage(InitiatingHeapOccupancyPercent, |
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1917 "InitiatingHeapOccupancyPercent"); |
2174
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1918 status = status && verify_min_value(G1RefProcDrainInterval, 1, |
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1919 "G1RefProcDrainInterval"); |
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1920 status = status && verify_min_value((intx)G1ConcMarkStepDurationMillis, 1, |
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1921 "G1ConcMarkStepDurationMillis"); |
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1922 } |
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1923 #endif |
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1924 |
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1925 status = status && verify_interval(RefDiscoveryPolicy, |
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1926 ReferenceProcessor::DiscoveryPolicyMin, |
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1927 ReferenceProcessor::DiscoveryPolicyMax, |
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1928 "RefDiscoveryPolicy"); |
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1929 |
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1930 // Limit the lower bound of this flag to 1 as it is used in a division |
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1931 // expression. |
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1932 status = status && verify_interval(TLABWasteTargetPercent, |
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1933 1, 100, "TLABWasteTargetPercent"); |
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1934 |
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1935 status = status && verify_object_alignment(); |
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1936 |
0 | 1937 return status; |
1938 } | |
1939 | |
1940 bool Arguments::is_bad_option(const JavaVMOption* option, jboolean ignore, | |
1941 const char* option_type) { | |
1942 if (ignore) return false; | |
1943 | |
1944 const char* spacer = " "; | |
1945 if (option_type == NULL) { | |
1946 option_type = ++spacer; // Set both to the empty string. | |
1947 } | |
1948 | |
1949 if (os::obsolete_option(option)) { | |
1950 jio_fprintf(defaultStream::error_stream(), | |
1951 "Obsolete %s%soption: %s\n", option_type, spacer, | |
1952 option->optionString); | |
1953 return false; | |
1954 } else { | |
1955 jio_fprintf(defaultStream::error_stream(), | |
1956 "Unrecognized %s%soption: %s\n", option_type, spacer, | |
1957 option->optionString); | |
1958 return true; | |
1959 } | |
1960 } | |
1961 | |
1962 static const char* user_assertion_options[] = { | |
1963 "-da", "-ea", "-disableassertions", "-enableassertions", 0 | |
1964 }; | |
1965 | |
1966 static const char* system_assertion_options[] = { | |
1967 "-dsa", "-esa", "-disablesystemassertions", "-enablesystemassertions", 0 | |
1968 }; | |
1969 | |
1970 // Return true if any of the strings in null-terminated array 'names' matches. | |
1971 // If tail_allowed is true, then the tail must begin with a colon; otherwise, | |
1972 // the option must match exactly. | |
1973 static bool match_option(const JavaVMOption* option, const char** names, const char** tail, | |
1974 bool tail_allowed) { | |
1975 for (/* empty */; *names != NULL; ++names) { | |
1976 if (match_option(option, *names, tail)) { | |
1977 if (**tail == '\0' || tail_allowed && **tail == ':') { | |
1978 return true; | |
1979 } | |
1980 } | |
1981 } | |
1982 return false; | |
1983 } | |
1984 | |
1284 | 1985 bool Arguments::parse_uintx(const char* value, |
1986 uintx* uintx_arg, | |
1987 uintx min_size) { | |
1988 | |
1989 // Check the sign first since atomull() parses only unsigned values. | |
1990 bool value_is_positive = !(*value == '-'); | |
1991 | |
1992 if (value_is_positive) { | |
1993 julong n; | |
1994 bool good_return = atomull(value, &n); | |
1995 if (good_return) { | |
1996 bool above_minimum = n >= min_size; | |
1997 bool value_is_too_large = n > max_uintx; | |
1998 | |
1999 if (above_minimum && !value_is_too_large) { | |
2000 *uintx_arg = n; | |
2001 return true; | |
2002 } | |
2003 } | |
2004 } | |
2005 return false; | |
2006 } | |
2007 | |
0 | 2008 Arguments::ArgsRange Arguments::parse_memory_size(const char* s, |
489
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2009 julong* long_arg, |
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2010 julong min_size) { |
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2011 if (!atomull(s, long_arg)) return arg_unreadable; |
0 | 2012 return check_memory_size(*long_arg, min_size); |
2013 } | |
2014 | |
2015 // Parse JavaVMInitArgs structure | |
2016 | |
2017 jint Arguments::parse_vm_init_args(const JavaVMInitArgs* args) { | |
2018 // For components of the system classpath. | |
2019 SysClassPath scp(Arguments::get_sysclasspath()); | |
2020 bool scp_assembly_required = false; | |
2021 | |
2022 // Save default settings for some mode flags | |
2023 Arguments::_AlwaysCompileLoopMethods = AlwaysCompileLoopMethods; | |
2024 Arguments::_UseOnStackReplacement = UseOnStackReplacement; | |
2025 Arguments::_ClipInlining = ClipInlining; | |
2026 Arguments::_BackgroundCompilation = BackgroundCompilation; | |
2027 | |
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2028 // Setup flags for mixed which is the default |
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2029 set_mode_flags(_mixed); |
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|
2030 |
0 | 2031 // Parse JAVA_TOOL_OPTIONS environment variable (if present) |
2032 jint result = parse_java_tool_options_environment_variable(&scp, &scp_assembly_required); | |
2033 if (result != JNI_OK) { | |
2034 return result; | |
2035 } | |
2036 | |
2037 // Parse JavaVMInitArgs structure passed in | |
2038 result = parse_each_vm_init_arg(args, &scp, &scp_assembly_required, COMMAND_LINE); | |
2039 if (result != JNI_OK) { | |
2040 return result; | |
2041 } | |
2042 | |
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2043 if (AggressiveOpts) { |
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2044 // Insert alt-rt.jar between user-specified bootclasspath |
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2045 // prefix and the default bootclasspath. os::set_boot_path() |
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2046 // uses meta_index_dir as the default bootclasspath directory. |
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2047 const char* altclasses_jar = "alt-rt.jar"; |
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2048 size_t altclasses_path_len = strlen(get_meta_index_dir()) + 1 + |
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2049 strlen(altclasses_jar); |
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2050 char* altclasses_path = NEW_C_HEAP_ARRAY(char, altclasses_path_len); |
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2051 strcpy(altclasses_path, get_meta_index_dir()); |
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2052 strcat(altclasses_path, altclasses_jar); |
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2053 scp.add_suffix_to_prefix(altclasses_path); |
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2054 scp_assembly_required = true; |
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2055 FREE_C_HEAP_ARRAY(char, altclasses_path); |
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2056 } |
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2057 |
0 | 2058 // Parse _JAVA_OPTIONS environment variable (if present) (mimics classic VM) |
2059 result = parse_java_options_environment_variable(&scp, &scp_assembly_required); | |
2060 if (result != JNI_OK) { | |
2061 return result; | |
2062 } | |
2063 | |
2064 // Do final processing now that all arguments have been parsed | |
2065 result = finalize_vm_init_args(&scp, scp_assembly_required); | |
2066 if (result != JNI_OK) { | |
2067 return result; | |
2068 } | |
2069 | |
2070 return JNI_OK; | |
2071 } | |
2072 | |
2073 jint Arguments::parse_each_vm_init_arg(const JavaVMInitArgs* args, | |
2074 SysClassPath* scp_p, | |
2075 bool* scp_assembly_required_p, | |
2076 FlagValueOrigin origin) { | |
2077 // Remaining part of option string | |
2078 const char* tail; | |
2079 | |
2080 // iterate over arguments | |
2081 for (int index = 0; index < args->nOptions; index++) { | |
2082 bool is_absolute_path = false; // for -agentpath vs -agentlib | |
2083 | |
2084 const JavaVMOption* option = args->options + index; | |
2085 | |
2086 if (!match_option(option, "-Djava.class.path", &tail) && | |
2087 !match_option(option, "-Dsun.java.command", &tail) && | |
2088 !match_option(option, "-Dsun.java.launcher", &tail)) { | |
2089 | |
2090 // add all jvm options to the jvm_args string. This string | |
2091 // is used later to set the java.vm.args PerfData string constant. | |
2092 // the -Djava.class.path and the -Dsun.java.command options are | |
2093 // omitted from jvm_args string as each have their own PerfData | |
2094 // string constant object. | |
2095 build_jvm_args(option->optionString); | |
2096 } | |
2097 | |
2098 // -verbose:[class/gc/jni] | |
2099 if (match_option(option, "-verbose", &tail)) { | |
2100 if (!strcmp(tail, ":class") || !strcmp(tail, "")) { | |
2101 FLAG_SET_CMDLINE(bool, TraceClassLoading, true); | |
2102 FLAG_SET_CMDLINE(bool, TraceClassUnloading, true); | |
2103 } else if (!strcmp(tail, ":gc")) { | |
2104 FLAG_SET_CMDLINE(bool, PrintGC, true); | |
2105 } else if (!strcmp(tail, ":jni")) { | |
2106 FLAG_SET_CMDLINE(bool, PrintJNIResolving, true); | |
2107 } | |
2108 // -da / -ea / -disableassertions / -enableassertions | |
2109 // These accept an optional class/package name separated by a colon, e.g., | |
2110 // -da:java.lang.Thread. | |
2111 } else if (match_option(option, user_assertion_options, &tail, true)) { | |
2112 bool enable = option->optionString[1] == 'e'; // char after '-' is 'e' | |
2113 if (*tail == '\0') { | |
2114 JavaAssertions::setUserClassDefault(enable); | |
2115 } else { | |
2116 assert(*tail == ':', "bogus match by match_option()"); | |
2117 JavaAssertions::addOption(tail + 1, enable); | |
2118 } | |
2119 // -dsa / -esa / -disablesystemassertions / -enablesystemassertions | |
2120 } else if (match_option(option, system_assertion_options, &tail, false)) { | |
2121 bool enable = option->optionString[1] == 'e'; // char after '-' is 'e' | |
2122 JavaAssertions::setSystemClassDefault(enable); | |
2123 // -bootclasspath: | |
2124 } else if (match_option(option, "-Xbootclasspath:", &tail)) { | |
2125 scp_p->reset_path(tail); | |
2126 *scp_assembly_required_p = true; | |
2127 // -bootclasspath/a: | |
2128 } else if (match_option(option, "-Xbootclasspath/a:", &tail)) { | |
2129 scp_p->add_suffix(tail); | |
2130 *scp_assembly_required_p = true; | |
2131 // -bootclasspath/p: | |
2132 } else if (match_option(option, "-Xbootclasspath/p:", &tail)) { | |
2133 scp_p->add_prefix(tail); | |
2134 *scp_assembly_required_p = true; | |
2135 // -Xrun | |
2136 } else if (match_option(option, "-Xrun", &tail)) { | |
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2137 if (tail != NULL) { |
0 | 2138 const char* pos = strchr(tail, ':'); |
2139 size_t len = (pos == NULL) ? strlen(tail) : pos - tail; | |
2140 char* name = (char*)memcpy(NEW_C_HEAP_ARRAY(char, len + 1), tail, len); | |
2141 name[len] = '\0'; | |
2142 | |
2143 char *options = NULL; | |
2144 if(pos != NULL) { | |
2145 size_t len2 = strlen(pos+1) + 1; // options start after ':'. Final zero must be copied. | |
2146 options = (char*)memcpy(NEW_C_HEAP_ARRAY(char, len2), pos+1, len2); | |
2147 } | |
2148 #ifdef JVMTI_KERNEL | |
2149 if ((strcmp(name, "hprof") == 0) || (strcmp(name, "jdwp") == 0)) { | |
2150 warning("profiling and debugging agents are not supported with Kernel VM"); | |
2151 } else | |
2152 #endif // JVMTI_KERNEL | |
2153 add_init_library(name, options); | |
2154 } | |
2155 // -agentlib and -agentpath | |
2156 } else if (match_option(option, "-agentlib:", &tail) || | |
2157 (is_absolute_path = match_option(option, "-agentpath:", &tail))) { | |
2158 if(tail != NULL) { | |
2159 const char* pos = strchr(tail, '='); | |
2160 size_t len = (pos == NULL) ? strlen(tail) : pos - tail; | |
2161 char* name = strncpy(NEW_C_HEAP_ARRAY(char, len + 1), tail, len); | |
2162 name[len] = '\0'; | |
2163 | |
2164 char *options = NULL; | |
2165 if(pos != NULL) { | |
2166 options = strcpy(NEW_C_HEAP_ARRAY(char, strlen(pos + 1) + 1), pos + 1); | |
2167 } | |
2168 #ifdef JVMTI_KERNEL | |
2169 if ((strcmp(name, "hprof") == 0) || (strcmp(name, "jdwp") == 0)) { | |
2170 warning("profiling and debugging agents are not supported with Kernel VM"); | |
2171 } else | |
2172 #endif // JVMTI_KERNEL | |
2173 add_init_agent(name, options, is_absolute_path); | |
2174 | |
2175 } | |
2176 // -javaagent | |
2177 } else if (match_option(option, "-javaagent:", &tail)) { | |
2178 if(tail != NULL) { | |
2179 char *options = strcpy(NEW_C_HEAP_ARRAY(char, strlen(tail) + 1), tail); | |
2180 add_init_agent("instrument", options, false); | |
2181 } | |
2182 // -Xnoclassgc | |
2183 } else if (match_option(option, "-Xnoclassgc", &tail)) { | |
2184 FLAG_SET_CMDLINE(bool, ClassUnloading, false); | |
2185 // -Xincgc: i-CMS | |
2186 } else if (match_option(option, "-Xincgc", &tail)) { | |
2187 FLAG_SET_CMDLINE(bool, UseConcMarkSweepGC, true); | |
2188 FLAG_SET_CMDLINE(bool, CMSIncrementalMode, true); | |
2189 // -Xnoincgc: no i-CMS | |
2190 } else if (match_option(option, "-Xnoincgc", &tail)) { | |
2191 FLAG_SET_CMDLINE(bool, UseConcMarkSweepGC, false); | |
2192 FLAG_SET_CMDLINE(bool, CMSIncrementalMode, false); | |
2193 // -Xconcgc | |
2194 } else if (match_option(option, "-Xconcgc", &tail)) { | |
2195 FLAG_SET_CMDLINE(bool, UseConcMarkSweepGC, true); | |
2196 // -Xnoconcgc | |
2197 } else if (match_option(option, "-Xnoconcgc", &tail)) { | |
2198 FLAG_SET_CMDLINE(bool, UseConcMarkSweepGC, false); | |
2199 // -Xbatch | |
2200 } else if (match_option(option, "-Xbatch", &tail)) { | |
2201 FLAG_SET_CMDLINE(bool, BackgroundCompilation, false); | |
2202 // -Xmn for compatibility with other JVM vendors | |
2203 } else if (match_option(option, "-Xmn", &tail)) { | |
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2204 julong long_initial_eden_size = 0; |
0 | 2205 ArgsRange errcode = parse_memory_size(tail, &long_initial_eden_size, 1); |
2206 if (errcode != arg_in_range) { | |
2207 jio_fprintf(defaultStream::error_stream(), | |
2208 "Invalid initial eden size: %s\n", option->optionString); | |
2209 describe_range_error(errcode); | |
2210 return JNI_EINVAL; | |
2211 } | |
1064 | 2212 FLAG_SET_CMDLINE(uintx, MaxNewSize, (uintx)long_initial_eden_size); |
2213 FLAG_SET_CMDLINE(uintx, NewSize, (uintx)long_initial_eden_size); | |
0 | 2214 // -Xms |
2215 } else if (match_option(option, "-Xms", &tail)) { | |
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2216 julong long_initial_heap_size = 0; |
0 | 2217 ArgsRange errcode = parse_memory_size(tail, &long_initial_heap_size, 1); |
2218 if (errcode != arg_in_range) { | |
2219 jio_fprintf(defaultStream::error_stream(), | |
2220 "Invalid initial heap size: %s\n", option->optionString); | |
2221 describe_range_error(errcode); | |
2222 return JNI_EINVAL; | |
2223 } | |
1064 | 2224 FLAG_SET_CMDLINE(uintx, InitialHeapSize, (uintx)long_initial_heap_size); |
0 | 2225 // Currently the minimum size and the initial heap sizes are the same. |
1064 | 2226 set_min_heap_size(InitialHeapSize); |
0 | 2227 // -Xmx |
2228 } else if (match_option(option, "-Xmx", &tail)) { | |
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2229 julong long_max_heap_size = 0; |
0 | 2230 ArgsRange errcode = parse_memory_size(tail, &long_max_heap_size, 1); |
2231 if (errcode != arg_in_range) { | |
2232 jio_fprintf(defaultStream::error_stream(), | |
2233 "Invalid maximum heap size: %s\n", option->optionString); | |
2234 describe_range_error(errcode); | |
2235 return JNI_EINVAL; | |
2236 } | |
1064 | 2237 FLAG_SET_CMDLINE(uintx, MaxHeapSize, (uintx)long_max_heap_size); |
0 | 2238 // Xmaxf |
2239 } else if (match_option(option, "-Xmaxf", &tail)) { | |
2240 int maxf = (int)(atof(tail) * 100); | |
2241 if (maxf < 0 || maxf > 100) { | |
2242 jio_fprintf(defaultStream::error_stream(), | |
2243 "Bad max heap free percentage size: %s\n", | |
2244 option->optionString); | |
2245 return JNI_EINVAL; | |
2246 } else { | |
2247 FLAG_SET_CMDLINE(uintx, MaxHeapFreeRatio, maxf); | |
2248 } | |
2249 // Xminf | |
2250 } else if (match_option(option, "-Xminf", &tail)) { | |
2251 int minf = (int)(atof(tail) * 100); | |
2252 if (minf < 0 || minf > 100) { | |
2253 jio_fprintf(defaultStream::error_stream(), | |
2254 "Bad min heap free percentage size: %s\n", | |
2255 option->optionString); | |
2256 return JNI_EINVAL; | |
2257 } else { | |
2258 FLAG_SET_CMDLINE(uintx, MinHeapFreeRatio, minf); | |
2259 } | |
2260 // -Xss | |
2261 } else if (match_option(option, "-Xss", &tail)) { | |
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2262 julong long_ThreadStackSize = 0; |
0 | 2263 ArgsRange errcode = parse_memory_size(tail, &long_ThreadStackSize, 1000); |
2264 if (errcode != arg_in_range) { | |
2265 jio_fprintf(defaultStream::error_stream(), | |
2266 "Invalid thread stack size: %s\n", option->optionString); | |
2267 describe_range_error(errcode); | |
2268 return JNI_EINVAL; | |
2269 } | |
2270 // Internally track ThreadStackSize in units of 1024 bytes. | |
2271 FLAG_SET_CMDLINE(intx, ThreadStackSize, | |
2272 round_to((int)long_ThreadStackSize, K) / K); | |
2273 // -Xoss | |
2274 } else if (match_option(option, "-Xoss", &tail)) { | |
2275 // HotSpot does not have separate native and Java stacks, ignore silently for compatibility | |
2276 // -Xmaxjitcodesize | |
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2277 } else if (match_option(option, "-Xmaxjitcodesize", &tail) || |
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2278 match_option(option, "-XX:ReservedCodeCacheSize=", &tail)) { |
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2279 julong long_ReservedCodeCacheSize = 0; |
0 | 2280 ArgsRange errcode = parse_memory_size(tail, &long_ReservedCodeCacheSize, |
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2281 (size_t)InitialCodeCacheSize); |
0 | 2282 if (errcode != arg_in_range) { |
2283 jio_fprintf(defaultStream::error_stream(), | |
2095
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2284 "Invalid maximum code cache size: %s. Should be greater than InitialCodeCacheSize=%dK\n", |
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2285 option->optionString, InitialCodeCacheSize/K); |
0 | 2286 describe_range_error(errcode); |
2287 return JNI_EINVAL; | |
2288 } | |
2289 FLAG_SET_CMDLINE(uintx, ReservedCodeCacheSize, (uintx)long_ReservedCodeCacheSize); | |
2290 // -green | |
2291 } else if (match_option(option, "-green", &tail)) { | |
2292 jio_fprintf(defaultStream::error_stream(), | |
2293 "Green threads support not available\n"); | |
2294 return JNI_EINVAL; | |
2295 // -native | |
2296 } else if (match_option(option, "-native", &tail)) { | |
2297 // HotSpot always uses native threads, ignore silently for compatibility | |
2298 // -Xsqnopause | |
2299 } else if (match_option(option, "-Xsqnopause", &tail)) { | |
2300 // EVM option, ignore silently for compatibility | |
2301 // -Xrs | |
2302 } else if (match_option(option, "-Xrs", &tail)) { | |
2303 // Classic/EVM option, new functionality | |
2304 FLAG_SET_CMDLINE(bool, ReduceSignalUsage, true); | |
2305 } else if (match_option(option, "-Xusealtsigs", &tail)) { | |
2306 // change default internal VM signals used - lower case for back compat | |
2307 FLAG_SET_CMDLINE(bool, UseAltSigs, true); | |
2308 // -Xoptimize | |
2309 } else if (match_option(option, "-Xoptimize", &tail)) { | |
2310 // EVM option, ignore silently for compatibility | |
2311 // -Xprof | |
2312 } else if (match_option(option, "-Xprof", &tail)) { | |
2313 #ifndef FPROF_KERNEL | |
2314 _has_profile = true; | |
2315 #else // FPROF_KERNEL | |
2316 // do we have to exit? | |
2317 warning("Kernel VM does not support flat profiling."); | |
2318 #endif // FPROF_KERNEL | |
2319 // -Xaprof | |
2320 } else if (match_option(option, "-Xaprof", &tail)) { | |
2321 _has_alloc_profile = true; | |
2322 // -Xconcurrentio | |
2323 } else if (match_option(option, "-Xconcurrentio", &tail)) { | |
2324 FLAG_SET_CMDLINE(bool, UseLWPSynchronization, true); | |
2325 FLAG_SET_CMDLINE(bool, BackgroundCompilation, false); | |
2326 FLAG_SET_CMDLINE(intx, DeferThrSuspendLoopCount, 1); | |
2327 FLAG_SET_CMDLINE(bool, UseTLAB, false); | |
2328 FLAG_SET_CMDLINE(uintx, NewSizeThreadIncrease, 16 * K); // 20Kb per thread added to new generation | |
2329 | |
2330 // -Xinternalversion | |
2331 } else if (match_option(option, "-Xinternalversion", &tail)) { | |
2332 jio_fprintf(defaultStream::output_stream(), "%s\n", | |
2333 VM_Version::internal_vm_info_string()); | |
2334 vm_exit(0); | |
2335 #ifndef PRODUCT | |
2336 // -Xprintflags | |
2337 } else if (match_option(option, "-Xprintflags", &tail)) { | |
4773 | 2338 CommandLineFlags::printFlags(tty, false); |
0 | 2339 vm_exit(0); |
2340 #endif | |
2341 // -D | |
2342 } else if (match_option(option, "-D", &tail)) { | |
2343 if (!add_property(tail)) { | |
2344 return JNI_ENOMEM; | |
2345 } | |
2346 // Out of the box management support | |
2347 if (match_option(option, "-Dcom.sun.management", &tail)) { | |
2348 FLAG_SET_CMDLINE(bool, ManagementServer, true); | |
2349 } | |
2350 // -Xint | |
2351 } else if (match_option(option, "-Xint", &tail)) { | |
2352 set_mode_flags(_int); | |
2353 // -Xmixed | |
2354 } else if (match_option(option, "-Xmixed", &tail)) { | |
2355 set_mode_flags(_mixed); | |
2356 // -Xcomp | |
2357 } else if (match_option(option, "-Xcomp", &tail)) { | |
2358 // for testing the compiler; turn off all flags that inhibit compilation | |
2359 set_mode_flags(_comp); | |
2360 | |
2361 // -Xshare:dump | |
2362 } else if (match_option(option, "-Xshare:dump", &tail)) { | |
2363 #ifdef TIERED | |
2364 FLAG_SET_CMDLINE(bool, DumpSharedSpaces, true); | |
2365 set_mode_flags(_int); // Prevent compilation, which creates objects | |
2366 #elif defined(COMPILER2) | |
2367 vm_exit_during_initialization( | |
2368 "Dumping a shared archive is not supported on the Server JVM.", NULL); | |
2369 #elif defined(KERNEL) | |
2370 vm_exit_during_initialization( | |
2371 "Dumping a shared archive is not supported on the Kernel JVM.", NULL); | |
2372 #else | |
2373 FLAG_SET_CMDLINE(bool, DumpSharedSpaces, true); | |
2374 set_mode_flags(_int); // Prevent compilation, which creates objects | |
2375 #endif | |
2376 // -Xshare:on | |
2377 } else if (match_option(option, "-Xshare:on", &tail)) { | |
2378 FLAG_SET_CMDLINE(bool, UseSharedSpaces, true); | |
2379 FLAG_SET_CMDLINE(bool, RequireSharedSpaces, true); | |
2380 // -Xshare:auto | |
2381 } else if (match_option(option, "-Xshare:auto", &tail)) { | |
2382 FLAG_SET_CMDLINE(bool, UseSharedSpaces, true); | |
2383 FLAG_SET_CMDLINE(bool, RequireSharedSpaces, false); | |
2384 // -Xshare:off | |
2385 } else if (match_option(option, "-Xshare:off", &tail)) { | |
2386 FLAG_SET_CMDLINE(bool, UseSharedSpaces, false); | |
2387 FLAG_SET_CMDLINE(bool, RequireSharedSpaces, false); | |
2388 | |
2389 // -Xverify | |
2390 } else if (match_option(option, "-Xverify", &tail)) { | |
2391 if (strcmp(tail, ":all") == 0 || strcmp(tail, "") == 0) { | |
2392 FLAG_SET_CMDLINE(bool, BytecodeVerificationLocal, true); | |
2393 FLAG_SET_CMDLINE(bool, BytecodeVerificationRemote, true); | |
2394 } else if (strcmp(tail, ":remote") == 0) { | |
2395 FLAG_SET_CMDLINE(bool, BytecodeVerificationLocal, false); | |
2396 FLAG_SET_CMDLINE(bool, BytecodeVerificationRemote, true); | |
2397 } else if (strcmp(tail, ":none") == 0) { | |
2398 FLAG_SET_CMDLINE(bool, BytecodeVerificationLocal, false); | |
2399 FLAG_SET_CMDLINE(bool, BytecodeVerificationRemote, false); | |
2400 } else if (is_bad_option(option, args->ignoreUnrecognized, "verification")) { | |
2401 return JNI_EINVAL; | |
2402 } | |
2403 // -Xdebug | |
2404 } else if (match_option(option, "-Xdebug", &tail)) { | |
2405 // note this flag has been used, then ignore | |
2406 set_xdebug_mode(true); | |
2407 // -Xnoagent | |
2408 } else if (match_option(option, "-Xnoagent", &tail)) { | |
2409 // For compatibility with classic. HotSpot refuses to load the old style agent.dll. | |
2410 } else if (match_option(option, "-Xboundthreads", &tail)) { | |
2411 // Bind user level threads to kernel threads (Solaris only) | |
2412 FLAG_SET_CMDLINE(bool, UseBoundThreads, true); | |
2413 } else if (match_option(option, "-Xloggc:", &tail)) { | |
2414 // Redirect GC output to the file. -Xloggc:<filename> | |
2415 // ostream_init_log(), when called will use this filename | |
2416 // to initialize a fileStream. | |
2417 _gc_log_filename = strdup(tail); | |
2418 FLAG_SET_CMDLINE(bool, PrintGC, true); | |
2419 FLAG_SET_CMDLINE(bool, PrintGCTimeStamps, true); | |
2420 | |
2421 // JNI hooks | |
2422 } else if (match_option(option, "-Xcheck", &tail)) { | |
2423 if (!strcmp(tail, ":jni")) { | |
2424 CheckJNICalls = true; | |
2425 } else if (is_bad_option(option, args->ignoreUnrecognized, | |
2426 "check")) { | |
2427 return JNI_EINVAL; | |
2428 } | |
2429 } else if (match_option(option, "vfprintf", &tail)) { | |
2430 _vfprintf_hook = CAST_TO_FN_PTR(vfprintf_hook_t, option->extraInfo); | |
2431 } else if (match_option(option, "exit", &tail)) { | |
2432 _exit_hook = CAST_TO_FN_PTR(exit_hook_t, option->extraInfo); | |
2433 } else if (match_option(option, "abort", &tail)) { | |
2434 _abort_hook = CAST_TO_FN_PTR(abort_hook_t, option->extraInfo); | |
2435 // -XX:+AggressiveHeap | |
2436 } else if (match_option(option, "-XX:+AggressiveHeap", &tail)) { | |
2437 | |
2438 // This option inspects the machine and attempts to set various | |
2439 // parameters to be optimal for long-running, memory allocation | |
2440 // intensive jobs. It is intended for machines with large | |
2441 // amounts of cpu and memory. | |
2442 | |
2443 // initHeapSize is needed since _initial_heap_size is 4 bytes on a 32 bit | |
2444 // VM, but we may not be able to represent the total physical memory | |
2445 // available (like having 8gb of memory on a box but using a 32bit VM). | |
2446 // Thus, we need to make sure we're using a julong for intermediate | |
2447 // calculations. | |
2448 julong initHeapSize; | |
2449 julong total_memory = os::physical_memory(); | |
2450 | |
2451 if (total_memory < (julong)256*M) { | |
2452 jio_fprintf(defaultStream::error_stream(), | |
2453 "You need at least 256mb of memory to use -XX:+AggressiveHeap\n"); | |
2454 vm_exit(1); | |
2455 } | |
2456 | |
2457 // The heap size is half of available memory, or (at most) | |
2458 // all of possible memory less 160mb (leaving room for the OS | |
2459 // when using ISM). This is the maximum; because adaptive sizing | |
2460 // is turned on below, the actual space used may be smaller. | |
2461 | |
2462 initHeapSize = MIN2(total_memory / (julong)2, | |
2463 total_memory - (julong)160*M); | |
2464 | |
2465 // Make sure that if we have a lot of memory we cap the 32 bit | |
2466 // process space. The 64bit VM version of this function is a nop. | |
2467 initHeapSize = os::allocatable_physical_memory(initHeapSize); | |
2468 | |
2469 // The perm gen is separate but contiguous with the | |
2470 // object heap (and is reserved with it) so subtract it | |
2471 // from the heap size. | |
2472 if (initHeapSize > MaxPermSize) { | |
2473 initHeapSize = initHeapSize - MaxPermSize; | |
2474 } else { | |
2475 warning("AggressiveHeap and MaxPermSize values may conflict"); | |
2476 } | |
2477 | |
2478 if (FLAG_IS_DEFAULT(MaxHeapSize)) { | |
2479 FLAG_SET_CMDLINE(uintx, MaxHeapSize, initHeapSize); | |
1064 | 2480 FLAG_SET_CMDLINE(uintx, InitialHeapSize, initHeapSize); |
0 | 2481 // Currently the minimum size and the initial heap sizes are the same. |
1064 | 2482 set_min_heap_size(initHeapSize); |
0 | 2483 } |
2484 if (FLAG_IS_DEFAULT(NewSize)) { | |
2485 // Make the young generation 3/8ths of the total heap. | |
2486 FLAG_SET_CMDLINE(uintx, NewSize, | |
2487 ((julong)MaxHeapSize / (julong)8) * (julong)3); | |
2488 FLAG_SET_CMDLINE(uintx, MaxNewSize, NewSize); | |
2489 } | |
2490 | |
2491 FLAG_SET_DEFAULT(UseLargePages, true); | |
2492 | |
2493 // Increase some data structure sizes for efficiency | |
2494 FLAG_SET_CMDLINE(uintx, BaseFootPrintEstimate, MaxHeapSize); | |
2495 FLAG_SET_CMDLINE(bool, ResizeTLAB, false); | |
2496 FLAG_SET_CMDLINE(uintx, TLABSize, 256*K); | |
2497 | |
2498 // See the OldPLABSize comment below, but replace 'after promotion' | |
2499 // with 'after copying'. YoungPLABSize is the size of the survivor | |
2500 // space per-gc-thread buffers. The default is 4kw. | |
2501 FLAG_SET_CMDLINE(uintx, YoungPLABSize, 256*K); // Note: this is in words | |
2502 | |
2503 // OldPLABSize is the size of the buffers in the old gen that | |
2504 // UseParallelGC uses to promote live data that doesn't fit in the | |
2505 // survivor spaces. At any given time, there's one for each gc thread. | |
2506 // The default size is 1kw. These buffers are rarely used, since the | |
2507 // survivor spaces are usually big enough. For specjbb, however, there | |
2508 // are occasions when there's lots of live data in the young gen | |
2509 // and we end up promoting some of it. We don't have a definite | |
2510 // explanation for why bumping OldPLABSize helps, but the theory | |
2511 // is that a bigger PLAB results in retaining something like the | |
2512 // original allocation order after promotion, which improves mutator | |
2513 // locality. A minor effect may be that larger PLABs reduce the | |
2514 // number of PLAB allocation events during gc. The value of 8kw | |
2515 // was arrived at by experimenting with specjbb. | |
2516 FLAG_SET_CMDLINE(uintx, OldPLABSize, 8*K); // Note: this is in words | |
2517 | |
2518 // CompilationPolicyChoice=0 causes the server compiler to adopt | |
2519 // a more conservative which-method-do-I-compile policy when one | |
2520 // of the counters maintained by the interpreter trips. The | |
2521 // result is reduced startup time and improved specjbb and | |
2522 // alacrity performance. Zero is the default, but we set it | |
2523 // explicitly here in case the default changes. | |
2524 // See runtime/compilationPolicy.*. | |
2525 FLAG_SET_CMDLINE(intx, CompilationPolicyChoice, 0); | |
2526 | |
2527 // Enable parallel GC and adaptive generation sizing | |
2528 FLAG_SET_CMDLINE(bool, UseParallelGC, true); | |
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2529 FLAG_SET_DEFAULT(ParallelGCThreads, |
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2530 Abstract_VM_Version::parallel_worker_threads()); |
0 | 2531 |
2532 // Encourage steady state memory management | |
2533 FLAG_SET_CMDLINE(uintx, ThresholdTolerance, 100); | |
2534 | |
2535 // This appears to improve mutator locality | |
2536 FLAG_SET_CMDLINE(bool, ScavengeBeforeFullGC, false); | |
2537 | |
2538 // Get around early Solaris scheduling bug | |
2539 // (affinity vs other jobs on system) | |
2540 // but disallow DR and offlining (5008695). | |
2541 FLAG_SET_CMDLINE(bool, BindGCTaskThreadsToCPUs, true); | |
2542 | |
2543 } else if (match_option(option, "-XX:+NeverTenure", &tail)) { | |
2544 // The last option must always win. | |
2545 FLAG_SET_CMDLINE(bool, AlwaysTenure, false); | |
2546 FLAG_SET_CMDLINE(bool, NeverTenure, true); | |
2547 } else if (match_option(option, "-XX:+AlwaysTenure", &tail)) { | |
2548 // The last option must always win. | |
2549 FLAG_SET_CMDLINE(bool, NeverTenure, false); | |
2550 FLAG_SET_CMDLINE(bool, AlwaysTenure, true); | |
2551 } else if (match_option(option, "-XX:+CMSPermGenSweepingEnabled", &tail) || | |
2552 match_option(option, "-XX:-CMSPermGenSweepingEnabled", &tail)) { | |
2553 jio_fprintf(defaultStream::error_stream(), | |
2554 "Please use CMSClassUnloadingEnabled in place of " | |
2555 "CMSPermGenSweepingEnabled in the future\n"); | |
2556 } else if (match_option(option, "-XX:+UseGCTimeLimit", &tail)) { | |
2557 FLAG_SET_CMDLINE(bool, UseGCOverheadLimit, true); | |
2558 jio_fprintf(defaultStream::error_stream(), | |
2559 "Please use -XX:+UseGCOverheadLimit in place of " | |
2560 "-XX:+UseGCTimeLimit in the future\n"); | |
2561 } else if (match_option(option, "-XX:-UseGCTimeLimit", &tail)) { | |
2562 FLAG_SET_CMDLINE(bool, UseGCOverheadLimit, false); | |
2563 jio_fprintf(defaultStream::error_stream(), | |
2564 "Please use -XX:-UseGCOverheadLimit in place of " | |
2565 "-XX:-UseGCTimeLimit in the future\n"); | |
2566 // The TLE options are for compatibility with 1.3 and will be | |
2567 // removed without notice in a future release. These options | |
2568 // are not to be documented. | |
2569 } else if (match_option(option, "-XX:MaxTLERatio=", &tail)) { | |
2570 // No longer used. | |
2571 } else if (match_option(option, "-XX:+ResizeTLE", &tail)) { | |
2572 FLAG_SET_CMDLINE(bool, ResizeTLAB, true); | |
2573 } else if (match_option(option, "-XX:-ResizeTLE", &tail)) { | |
2574 FLAG_SET_CMDLINE(bool, ResizeTLAB, false); | |
2575 } else if (match_option(option, "-XX:+PrintTLE", &tail)) { | |
2576 FLAG_SET_CMDLINE(bool, PrintTLAB, true); | |
2577 } else if (match_option(option, "-XX:-PrintTLE", &tail)) { | |
2578 FLAG_SET_CMDLINE(bool, PrintTLAB, false); | |
2579 } else if (match_option(option, "-XX:TLEFragmentationRatio=", &tail)) { | |
2580 // No longer used. | |
2581 } else if (match_option(option, "-XX:TLESize=", &tail)) { | |
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2582 julong long_tlab_size = 0; |
0 | 2583 ArgsRange errcode = parse_memory_size(tail, &long_tlab_size, 1); |
2584 if (errcode != arg_in_range) { | |
2585 jio_fprintf(defaultStream::error_stream(), | |
2586 "Invalid TLAB size: %s\n", option->optionString); | |
2587 describe_range_error(errcode); | |
2588 return JNI_EINVAL; | |
2589 } | |
2590 FLAG_SET_CMDLINE(uintx, TLABSize, long_tlab_size); | |
2591 } else if (match_option(option, "-XX:TLEThreadRatio=", &tail)) { | |
2592 // No longer used. | |
2593 } else if (match_option(option, "-XX:+UseTLE", &tail)) { | |
2594 FLAG_SET_CMDLINE(bool, UseTLAB, true); | |
2595 } else if (match_option(option, "-XX:-UseTLE", &tail)) { | |
2596 FLAG_SET_CMDLINE(bool, UseTLAB, false); | |
2597 SOLARIS_ONLY( | |
2598 } else if (match_option(option, "-XX:+UsePermISM", &tail)) { | |
2599 warning("-XX:+UsePermISM is obsolete."); | |
2600 FLAG_SET_CMDLINE(bool, UseISM, true); | |
2601 } else if (match_option(option, "-XX:-UsePermISM", &tail)) { | |
2602 FLAG_SET_CMDLINE(bool, UseISM, false); | |
2603 ) | |
2604 } else if (match_option(option, "-XX:+DisplayVMOutputToStderr", &tail)) { | |
2605 FLAG_SET_CMDLINE(bool, DisplayVMOutputToStdout, false); | |
2606 FLAG_SET_CMDLINE(bool, DisplayVMOutputToStderr, true); | |
2607 } else if (match_option(option, "-XX:+DisplayVMOutputToStdout", &tail)) { | |
2608 FLAG_SET_CMDLINE(bool, DisplayVMOutputToStderr, false); | |
2609 FLAG_SET_CMDLINE(bool, DisplayVMOutputToStdout, true); | |
2610 } else if (match_option(option, "-XX:+ExtendedDTraceProbes", &tail)) { | |
4006 | 2611 #if defined(DTRACE_ENABLED) |
0 | 2612 FLAG_SET_CMDLINE(bool, ExtendedDTraceProbes, true); |
2613 FLAG_SET_CMDLINE(bool, DTraceMethodProbes, true); | |
2614 FLAG_SET_CMDLINE(bool, DTraceAllocProbes, true); | |
2615 FLAG_SET_CMDLINE(bool, DTraceMonitorProbes, true); | |
4006 | 2616 #else // defined(DTRACE_ENABLED) |
0 | 2617 jio_fprintf(defaultStream::error_stream(), |
4006 | 2618 "ExtendedDTraceProbes flag is not applicable for this configuration\n"); |
0 | 2619 return JNI_EINVAL; |
4006 | 2620 #endif // defined(DTRACE_ENABLED) |
0 | 2621 #ifdef ASSERT |
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|
2622 } else if (match_option(option, "-XX:+FullGCALot", &tail)) { |
0 | 2623 FLAG_SET_CMDLINE(bool, FullGCALot, true); |
2624 // disable scavenge before parallel mark-compact | |
2625 FLAG_SET_CMDLINE(bool, ScavengeBeforeFullGC, false); | |
2626 #endif | |
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|
2627 } else if (match_option(option, "-XX:CMSParPromoteBlocksToClaim=", &tail)) { |
0 | 2628 julong cms_blocks_to_claim = (julong)atol(tail); |
2629 FLAG_SET_CMDLINE(uintx, CMSParPromoteBlocksToClaim, cms_blocks_to_claim); | |
2630 jio_fprintf(defaultStream::error_stream(), | |
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2631 "Please use -XX:OldPLABSize in place of " |
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|
2632 "-XX:CMSParPromoteBlocksToClaim in the future\n"); |
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|
2633 } else if (match_option(option, "-XX:ParCMSPromoteBlocksToClaim=", &tail)) { |
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6631166: CMS: better heuristics when combatting fragmentation
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|
2634 julong cms_blocks_to_claim = (julong)atol(tail); |
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6631166: CMS: better heuristics when combatting fragmentation
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|
2635 FLAG_SET_CMDLINE(uintx, CMSParPromoteBlocksToClaim, cms_blocks_to_claim); |
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6631166: CMS: better heuristics when combatting fragmentation
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|
2636 jio_fprintf(defaultStream::error_stream(), |
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|
2637 "Please use -XX:OldPLABSize in place of " |
0 | 2638 "-XX:ParCMSPromoteBlocksToClaim in the future\n"); |
1145
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|
2639 } else if (match_option(option, "-XX:ParallelGCOldGenAllocBufferSize=", &tail)) { |
489
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|
2640 julong old_plab_size = 0; |
0 | 2641 ArgsRange errcode = parse_memory_size(tail, &old_plab_size, 1); |
2642 if (errcode != arg_in_range) { | |
2643 jio_fprintf(defaultStream::error_stream(), | |
2644 "Invalid old PLAB size: %s\n", option->optionString); | |
2645 describe_range_error(errcode); | |
2646 return JNI_EINVAL; | |
2647 } | |
489
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diff
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|
2648 FLAG_SET_CMDLINE(uintx, OldPLABSize, old_plab_size); |
0 | 2649 jio_fprintf(defaultStream::error_stream(), |
2650 "Please use -XX:OldPLABSize in place of " | |
2651 "-XX:ParallelGCOldGenAllocBufferSize in the future\n"); | |
1145
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|
2652 } else if (match_option(option, "-XX:ParallelGCToSpaceAllocBufferSize=", &tail)) { |
489
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diff
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|
2653 julong young_plab_size = 0; |
0 | 2654 ArgsRange errcode = parse_memory_size(tail, &young_plab_size, 1); |
2655 if (errcode != arg_in_range) { | |
2656 jio_fprintf(defaultStream::error_stream(), | |
2657 "Invalid young PLAB size: %s\n", option->optionString); | |
2658 describe_range_error(errcode); | |
2659 return JNI_EINVAL; | |
2660 } | |
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|
2661 FLAG_SET_CMDLINE(uintx, YoungPLABSize, young_plab_size); |
0 | 2662 jio_fprintf(defaultStream::error_stream(), |
2663 "Please use -XX:YoungPLABSize in place of " | |
2664 "-XX:ParallelGCToSpaceAllocBufferSize in the future\n"); | |
1284 | 2665 } else if (match_option(option, "-XX:CMSMarkStackSize=", &tail) || |
2666 match_option(option, "-XX:G1MarkStackSize=", &tail)) { | |
2667 julong stack_size = 0; | |
2668 ArgsRange errcode = parse_memory_size(tail, &stack_size, 1); | |
2669 if (errcode != arg_in_range) { | |
2670 jio_fprintf(defaultStream::error_stream(), | |
2671 "Invalid mark stack size: %s\n", option->optionString); | |
2672 describe_range_error(errcode); | |
2673 return JNI_EINVAL; | |
2674 } | |
2675 FLAG_SET_CMDLINE(uintx, MarkStackSize, stack_size); | |
2676 } else if (match_option(option, "-XX:CMSMarkStackSizeMax=", &tail)) { | |
2677 julong max_stack_size = 0; | |
2678 ArgsRange errcode = parse_memory_size(tail, &max_stack_size, 1); | |
2679 if (errcode != arg_in_range) { | |
2680 jio_fprintf(defaultStream::error_stream(), | |
2681 "Invalid maximum mark stack size: %s\n", | |
2682 option->optionString); | |
2683 describe_range_error(errcode); | |
2684 return JNI_EINVAL; | |
2685 } | |
2686 FLAG_SET_CMDLINE(uintx, MarkStackSizeMax, max_stack_size); | |
2687 } else if (match_option(option, "-XX:ParallelMarkingThreads=", &tail) || | |
2688 match_option(option, "-XX:ParallelCMSThreads=", &tail)) { | |
2689 uintx conc_threads = 0; | |
2690 if (!parse_uintx(tail, &conc_threads, 1)) { | |
2691 jio_fprintf(defaultStream::error_stream(), | |
2692 "Invalid concurrent threads: %s\n", option->optionString); | |
2693 return JNI_EINVAL; | |
2694 } | |
2695 FLAG_SET_CMDLINE(uintx, ConcGCThreads, conc_threads); | |
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2696 } else if (match_option(option, "-XX:", &tail)) { // -XX:xxxx |
0 | 2697 // Skip -XX:Flags= since that case has already been handled |
2698 if (strncmp(tail, "Flags=", strlen("Flags=")) != 0) { | |
2699 if (!process_argument(tail, args->ignoreUnrecognized, origin)) { | |
2700 return JNI_EINVAL; | |
2701 } | |
2702 } | |
2703 // Unknown option | |
2704 } else if (is_bad_option(option, args->ignoreUnrecognized)) { | |
2705 return JNI_ERR; | |
2706 } | |
2707 } | |
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2a241e764894
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3349
diff
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|
2708 |
449
171e581e8161
6554406: Change switch UseVMInterruptibleIO default to false (sol)
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diff
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|
2709 // Change the default value for flags which have different default values |
171e581e8161
6554406: Change switch UseVMInterruptibleIO default to false (sol)
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diff
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|
2710 // when working with older JDKs. |
171e581e8161
6554406: Change switch UseVMInterruptibleIO default to false (sol)
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diff
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|
2711 if (JDK_Version::current().compare_major(6) <= 0 && |
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6554406: Change switch UseVMInterruptibleIO default to false (sol)
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diff
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|
2712 FLAG_IS_DEFAULT(UseVMInterruptibleIO)) { |
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6554406: Change switch UseVMInterruptibleIO default to false (sol)
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diff
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|
2713 FLAG_SET_DEFAULT(UseVMInterruptibleIO, true); |
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|
2714 } |
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|
2715 #ifdef LINUX |
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|
2716 if (JDK_Version::current().compare_major(6) <= 0 && |
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diff
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|
2717 FLAG_IS_DEFAULT(UseLinuxPosixThreadCPUClocks)) { |
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diff
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|
2718 FLAG_SET_DEFAULT(UseLinuxPosixThreadCPUClocks, false); |
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|
2719 } |
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|
2720 #endif // LINUX |
0 | 2721 return JNI_OK; |
2722 } | |
2723 | |
2724 jint Arguments::finalize_vm_init_args(SysClassPath* scp_p, bool scp_assembly_required) { | |
2725 // This must be done after all -D arguments have been processed. | |
2726 scp_p->expand_endorsed(); | |
2727 | |
2728 if (scp_assembly_required || scp_p->get_endorsed() != NULL) { | |
2729 // Assemble the bootclasspath elements into the final path. | |
2730 Arguments::set_sysclasspath(scp_p->combined_path()); | |
2731 } | |
2732 | |
2733 // This must be done after all arguments have been processed. | |
2734 // java_compiler() true means set to "NONE" or empty. | |
2735 if (java_compiler() && !xdebug_mode()) { | |
2736 // For backwards compatibility, we switch to interpreted mode if | |
2737 // -Djava.compiler="NONE" or "" is specified AND "-Xdebug" was | |
2738 // not specified. | |
2739 set_mode_flags(_int); | |
2740 } | |
2741 if (CompileThreshold == 0) { | |
2742 set_mode_flags(_int); | |
2743 } | |
2744 | |
2745 #ifndef COMPILER2 | |
2746 // Don't degrade server performance for footprint | |
2747 if (FLAG_IS_DEFAULT(UseLargePages) && | |
2748 MaxHeapSize < LargePageHeapSizeThreshold) { | |
2749 // No need for large granularity pages w/small heaps. | |
2750 // Note that large pages are enabled/disabled for both the | |
2751 // Java heap and the code cache. | |
2752 FLAG_SET_DEFAULT(UseLargePages, false); | |
2753 SOLARIS_ONLY(FLAG_SET_DEFAULT(UseMPSS, false)); | |
2754 SOLARIS_ONLY(FLAG_SET_DEFAULT(UseISM, false)); | |
2755 } | |
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6711316: Open source the Garbage-First garbage collector
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|
2756 |
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576e77447e3c
6923002: assert(false,"this call site should not be polymorphic")
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1188
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|
2757 // Tiered compilation is undefined with C1. |
576e77447e3c
6923002: assert(false,"this call site should not be polymorphic")
kvn
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changeset
|
2758 TieredCompilation = false; |
0 | 2759 #else |
2760 if (!FLAG_IS_DEFAULT(OptoLoopAlignment) && FLAG_IS_DEFAULT(MaxLoopPad)) { | |
2761 FLAG_SET_DEFAULT(MaxLoopPad, OptoLoopAlignment-1); | |
2762 } | |
2763 #endif | |
2764 | |
1681
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|
2765 // If we are running in a headless jre, force java.awt.headless property |
126ea7725993
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|
2766 // to be true unless the property has already been set. |
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|
2767 // Also allow the OS environment variable JAVA_AWT_HEADLESS to set headless state. |
126ea7725993
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|
2768 if (os::is_headless_jre()) { |
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|
2769 const char* headless = Arguments::get_property("java.awt.headless"); |
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diff
changeset
|
2770 if (headless == NULL) { |
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diff
changeset
|
2771 char envbuffer[128]; |
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diff
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|
2772 if (!os::getenv("JAVA_AWT_HEADLESS", envbuffer, sizeof(envbuffer))) { |
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|
2773 if (!add_property("java.awt.headless=true")) { |
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|
2774 return JNI_ENOMEM; |
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changeset
|
2775 } |
126ea7725993
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diff
changeset
|
2776 } else { |
126ea7725993
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changeset
|
2777 char buffer[256]; |
126ea7725993
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diff
changeset
|
2778 strcpy(buffer, "java.awt.headless="); |
126ea7725993
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changeset
|
2779 strcat(buffer, envbuffer); |
126ea7725993
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diff
changeset
|
2780 if (!add_property(buffer)) { |
126ea7725993
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changeset
|
2781 return JNI_ENOMEM; |
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diff
changeset
|
2782 } |
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changeset
|
2783 } |
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diff
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|
2784 } |
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|
2785 } |
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|
2786 |
0 | 2787 if (!check_vm_args_consistency()) { |
2788 return JNI_ERR; | |
2789 } | |
2790 | |
2791 return JNI_OK; | |
2792 } | |
2793 | |
2794 jint Arguments::parse_java_options_environment_variable(SysClassPath* scp_p, bool* scp_assembly_required_p) { | |
2795 return parse_options_environment_variable("_JAVA_OPTIONS", scp_p, | |
2796 scp_assembly_required_p); | |
2797 } | |
2798 | |
2799 jint Arguments::parse_java_tool_options_environment_variable(SysClassPath* scp_p, bool* scp_assembly_required_p) { | |
2800 return parse_options_environment_variable("JAVA_TOOL_OPTIONS", scp_p, | |
2801 scp_assembly_required_p); | |
2802 } | |
2803 | |
2804 jint Arguments::parse_options_environment_variable(const char* name, SysClassPath* scp_p, bool* scp_assembly_required_p) { | |
2805 const int N_MAX_OPTIONS = 64; | |
2806 const int OPTION_BUFFER_SIZE = 1024; | |
2807 char buffer[OPTION_BUFFER_SIZE]; | |
2808 | |
2809 // The variable will be ignored if it exceeds the length of the buffer. | |
2810 // Don't check this variable if user has special privileges | |
2811 // (e.g. unix su command). | |
2812 if (os::getenv(name, buffer, sizeof(buffer)) && | |
2813 !os::have_special_privileges()) { | |
2814 JavaVMOption options[N_MAX_OPTIONS]; // Construct option array | |
2815 jio_fprintf(defaultStream::error_stream(), | |
2816 "Picked up %s: %s\n", name, buffer); | |
2817 char* rd = buffer; // pointer to the input string (rd) | |
2818 int i; | |
2819 for (i = 0; i < N_MAX_OPTIONS;) { // repeat for all options in the input string | |
2820 while (isspace(*rd)) rd++; // skip whitespace | |
2821 if (*rd == 0) break; // we re done when the input string is read completely | |
2822 | |
2823 // The output, option string, overwrites the input string. | |
2824 // Because of quoting, the pointer to the option string (wrt) may lag the pointer to | |
2825 // input string (rd). | |
2826 char* wrt = rd; | |
2827 | |
2828 options[i++].optionString = wrt; // Fill in option | |
2829 while (*rd != 0 && !isspace(*rd)) { // unquoted strings terminate with a space or NULL | |
2830 if (*rd == '\'' || *rd == '"') { // handle a quoted string | |
2831 int quote = *rd; // matching quote to look for | |
2832 rd++; // don't copy open quote | |
2833 while (*rd != quote) { // include everything (even spaces) up until quote | |
2834 if (*rd == 0) { // string termination means unmatched string | |
2835 jio_fprintf(defaultStream::error_stream(), | |
2836 "Unmatched quote in %s\n", name); | |
2837 return JNI_ERR; | |
2838 } | |
2839 *wrt++ = *rd++; // copy to option string | |
2840 } | |
2841 rd++; // don't copy close quote | |
2842 } else { | |
2843 *wrt++ = *rd++; // copy to option string | |
2844 } | |
2845 } | |
2846 // Need to check if we're done before writing a NULL, | |
2847 // because the write could be to the byte that rd is pointing to. | |
2848 if (*rd++ == 0) { | |
2849 *wrt = 0; | |
2850 break; | |
2851 } | |
2852 *wrt = 0; // Zero terminate option | |
2853 } | |
2854 // Construct JavaVMInitArgs structure and parse as if it was part of the command line | |
2855 JavaVMInitArgs vm_args; | |
2856 vm_args.version = JNI_VERSION_1_2; | |
2857 vm_args.options = options; | |
2858 vm_args.nOptions = i; | |
564 | 2859 vm_args.ignoreUnrecognized = IgnoreUnrecognizedVMOptions; |
0 | 2860 |
2861 if (PrintVMOptions) { | |
2862 const char* tail; | |
2863 for (int i = 0; i < vm_args.nOptions; i++) { | |
2864 const JavaVMOption *option = vm_args.options + i; | |
2865 if (match_option(option, "-XX:", &tail)) { | |
2866 logOption(tail); | |
2867 } | |
2868 } | |
2869 } | |
2870 | |
2871 return(parse_each_vm_init_arg(&vm_args, scp_p, scp_assembly_required_p, ENVIRON_VAR)); | |
2872 } | |
2873 return JNI_OK; | |
2874 } | |
2875 | |
2362
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|
2876 void Arguments::set_shared_spaces_flags() { |
2378 | 2877 const bool must_share = DumpSharedSpaces || RequireSharedSpaces; |
2878 const bool might_share = must_share || UseSharedSpaces; | |
2879 | |
2880 // The string table is part of the shared archive so the size must match. | |
2881 if (!FLAG_IS_DEFAULT(StringTableSize)) { | |
2882 // Disable sharing. | |
2883 if (must_share) { | |
2884 warning("disabling shared archive %s because of non-default " | |
2885 "StringTableSize", DumpSharedSpaces ? "creation" : "use"); | |
2886 } | |
2887 if (might_share) { | |
2888 FLAG_SET_DEFAULT(DumpSharedSpaces, false); | |
2889 FLAG_SET_DEFAULT(RequireSharedSpaces, false); | |
2890 FLAG_SET_DEFAULT(UseSharedSpaces, false); | |
2891 } | |
2892 return; | |
2893 } | |
2894 | |
2362
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|
2895 // Check whether class data sharing settings conflict with GC, compressed oops |
a2c2eac1ca62
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|
2896 // or page size, and fix them up. Explicit sharing options override other |
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|
2897 // settings. |
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|
2898 const bool cannot_share = UseConcMarkSweepGC || CMSIncrementalMode || |
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|
2899 UseG1GC || UseParNewGC || UseParallelGC || UseParallelOldGC || |
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|
2900 UseCompressedOops || UseLargePages && FLAG_IS_CMDLINE(UseLargePages); |
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diff
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|
2901 if (cannot_share) { |
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diff
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|
2902 if (must_share) { |
2378 | 2903 warning("selecting serial gc and disabling large pages %s" |
2904 "because of %s", "" LP64_ONLY("and compressed oops "), | |
2905 DumpSharedSpaces ? "-Xshare:dump" : "-Xshare:on"); | |
2906 force_serial_gc(); | |
2907 FLAG_SET_CMDLINE(bool, UseLargePages, false); | |
2908 LP64_ONLY(FLAG_SET_CMDLINE(bool, UseCompressedOops, false)); | |
2362
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|
2909 } else { |
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diff
changeset
|
2910 if (UseSharedSpaces && Verbose) { |
a2c2eac1ca62
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diff
changeset
|
2911 warning("turning off use of shared archive because of " |
a2c2eac1ca62
7018056: large pages not always enabled by default
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diff
changeset
|
2912 "choice of garbage collector or large pages"); |
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diff
changeset
|
2913 } |
a2c2eac1ca62
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diff
changeset
|
2914 no_shared_spaces(); |
a2c2eac1ca62
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diff
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|
2915 } |
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diff
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|
2916 } else if (UseLargePages && might_share) { |
a2c2eac1ca62
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diff
changeset
|
2917 // Disable large pages to allow shared spaces. This is sub-optimal, since |
a2c2eac1ca62
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jcoomes
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diff
changeset
|
2918 // there may not even be a shared archive to use. |
a2c2eac1ca62
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jcoomes
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diff
changeset
|
2919 FLAG_SET_DEFAULT(UseLargePages, false); |
a2c2eac1ca62
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diff
changeset
|
2920 } |
a2c2eac1ca62
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diff
changeset
|
2921 } |
1891
9de67bf4244d
6996136: VM crash in src/share/vm/runtime/virtualspace.cpp:424
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diff
changeset
|
2922 |
3797
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changeset
|
2923 // Disable options not supported in this release, with a warning if they |
eb94b7226b7a
7061192: option handling adjustments for oracle and embedded builds
jcoomes
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diff
changeset
|
2924 // were explicitly requested on the command-line |
eb94b7226b7a
7061192: option handling adjustments for oracle and embedded builds
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diff
changeset
|
2925 #define UNSUPPORTED_OPTION(opt, description) \ |
eb94b7226b7a
7061192: option handling adjustments for oracle and embedded builds
jcoomes
parents:
3769
diff
changeset
|
2926 do { \ |
eb94b7226b7a
7061192: option handling adjustments for oracle and embedded builds
jcoomes
parents:
3769
diff
changeset
|
2927 if (opt) { \ |
eb94b7226b7a
7061192: option handling adjustments for oracle and embedded builds
jcoomes
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3769
diff
changeset
|
2928 if (FLAG_IS_CMDLINE(opt)) { \ |
eb94b7226b7a
7061192: option handling adjustments for oracle and embedded builds
jcoomes
parents:
3769
diff
changeset
|
2929 warning(description " is disabled in this release."); \ |
eb94b7226b7a
7061192: option handling adjustments for oracle and embedded builds
jcoomes
parents:
3769
diff
changeset
|
2930 } \ |
eb94b7226b7a
7061192: option handling adjustments for oracle and embedded builds
jcoomes
parents:
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diff
changeset
|
2931 FLAG_SET_DEFAULT(opt, false); \ |
eb94b7226b7a
7061192: option handling adjustments for oracle and embedded builds
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diff
changeset
|
2932 } \ |
eb94b7226b7a
7061192: option handling adjustments for oracle and embedded builds
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diff
changeset
|
2933 } while(0) |
eb94b7226b7a
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|
2934 |
0 | 2935 // Parse entry point called from JNI_CreateJavaVM |
2936 | |
2937 jint Arguments::parse(const JavaVMInitArgs* args) { | |
2938 | |
2939 // Sharing support | |
2940 // Construct the path to the archive | |
2941 char jvm_path[JVM_MAXPATHLEN]; | |
2942 os::jvm_path(jvm_path, sizeof(jvm_path)); | |
2943 #ifdef TIERED | |
2944 if (strstr(jvm_path, "client") != NULL) { | |
2945 force_client_mode = true; | |
2946 } | |
2947 #endif // TIERED | |
2948 char *end = strrchr(jvm_path, *os::file_separator()); | |
2949 if (end != NULL) *end = '\0'; | |
2950 char *shared_archive_path = NEW_C_HEAP_ARRAY(char, strlen(jvm_path) + | |
2951 strlen(os::file_separator()) + 20); | |
2952 if (shared_archive_path == NULL) return JNI_ENOMEM; | |
2953 strcpy(shared_archive_path, jvm_path); | |
2954 strcat(shared_archive_path, os::file_separator()); | |
2955 strcat(shared_archive_path, "classes"); | |
2956 DEBUG_ONLY(strcat(shared_archive_path, "_g");) | |
2957 strcat(shared_archive_path, ".jsa"); | |
2958 SharedArchivePath = shared_archive_path; | |
2959 | |
2960 // Remaining part of option string | |
2961 const char* tail; | |
2962 | |
2963 // If flag "-XX:Flags=flags-file" is used it will be the first option to be processed. | |
2964 bool settings_file_specified = false; | |
564 | 2965 const char* flags_file; |
0 | 2966 int index; |
2967 for (index = 0; index < args->nOptions; index++) { | |
2968 const JavaVMOption *option = args->options + index; | |
2969 if (match_option(option, "-XX:Flags=", &tail)) { | |
564 | 2970 flags_file = tail; |
0 | 2971 settings_file_specified = true; |
2972 } | |
2973 if (match_option(option, "-XX:+PrintVMOptions", &tail)) { | |
2974 PrintVMOptions = true; | |
2975 } | |
253
b0fe4deeb9fb
6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.")
kvn
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diff
changeset
|
2976 if (match_option(option, "-XX:-PrintVMOptions", &tail)) { |
b0fe4deeb9fb
6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.")
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diff
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|
2977 PrintVMOptions = false; |
b0fe4deeb9fb
6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.")
kvn
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diff
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|
2978 } |
564 | 2979 if (match_option(option, "-XX:+IgnoreUnrecognizedVMOptions", &tail)) { |
2980 IgnoreUnrecognizedVMOptions = true; | |
2981 } | |
2982 if (match_option(option, "-XX:-IgnoreUnrecognizedVMOptions", &tail)) { | |
2983 IgnoreUnrecognizedVMOptions = false; | |
2984 } | |
1150 | 2985 if (match_option(option, "-XX:+PrintFlagsInitial", &tail)) { |
4773 | 2986 CommandLineFlags::printFlags(tty, false); |
1150 | 2987 vm_exit(0); |
2988 } | |
1768
6ee479178066
6979444: add command line option to print command line flags descriptions
ikrylov
parents:
1745
diff
changeset
|
2989 |
6ee479178066
6979444: add command line option to print command line flags descriptions
ikrylov
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1745
diff
changeset
|
2990 #ifndef PRODUCT |
6ee479178066
6979444: add command line option to print command line flags descriptions
ikrylov
parents:
1745
diff
changeset
|
2991 if (match_option(option, "-XX:+PrintFlagsWithComments", &tail)) { |
4773 | 2992 CommandLineFlags::printFlags(tty, true); |
1768
6ee479178066
6979444: add command line option to print command line flags descriptions
ikrylov
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1745
diff
changeset
|
2993 vm_exit(0); |
6ee479178066
6979444: add command line option to print command line flags descriptions
ikrylov
parents:
1745
diff
changeset
|
2994 } |
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1745
diff
changeset
|
2995 #endif |
564 | 2996 } |
2997 | |
2998 if (IgnoreUnrecognizedVMOptions) { | |
2999 // uncast const to modify the flag args->ignoreUnrecognized | |
3000 *(jboolean*)(&args->ignoreUnrecognized) = true; | |
3001 } | |
3002 | |
3003 // Parse specified settings file | |
3004 if (settings_file_specified) { | |
3005 if (!process_settings_file(flags_file, true, args->ignoreUnrecognized)) { | |
3006 return JNI_EINVAL; | |
3007 } | |
0 | 3008 } |
3009 | |
3010 // Parse default .hotspotrc settings file | |
3011 if (!settings_file_specified) { | |
3012 if (!process_settings_file(".hotspotrc", false, args->ignoreUnrecognized)) { | |
3013 return JNI_EINVAL; | |
3014 } | |
3015 } | |
3016 | |
3017 if (PrintVMOptions) { | |
3018 for (index = 0; index < args->nOptions; index++) { | |
3019 const JavaVMOption *option = args->options + index; | |
3020 if (match_option(option, "-XX:", &tail)) { | |
3021 logOption(tail); | |
3022 } | |
3023 } | |
3024 } | |
3025 | |
3026 // Parse JavaVMInitArgs structure passed in, as well as JAVA_TOOL_OPTIONS and _JAVA_OPTIONS | |
3027 jint result = parse_vm_init_args(args); | |
3028 if (result != JNI_OK) { | |
3029 return result; | |
3030 } | |
3031 | |
3797
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7061192: option handling adjustments for oracle and embedded builds
jcoomes
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3769
diff
changeset
|
3032 #ifdef JAVASE_EMBEDDED |
eb94b7226b7a
7061192: option handling adjustments for oracle and embedded builds
jcoomes
parents:
3769
diff
changeset
|
3033 UNSUPPORTED_OPTION(UseG1GC, "G1 GC"); |
eb94b7226b7a
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jcoomes
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diff
changeset
|
3034 #endif |
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diff
changeset
|
3035 |
0 | 3036 #ifndef PRODUCT |
3037 if (TraceBytecodesAt != 0) { | |
3038 TraceBytecodes = true; | |
3039 } | |
3040 if (CountCompiledCalls) { | |
3041 if (UseCounterDecay) { | |
3042 warning("UseCounterDecay disabled because CountCalls is set"); | |
3043 UseCounterDecay = false; | |
3044 } | |
3045 } | |
3046 #endif // PRODUCT | |
3047 | |
2416
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
3048 // Transitional |
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
3049 if (EnableMethodHandles || AnonymousClasses) { |
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
3050 if (!EnableInvokeDynamic && !FLAG_IS_DEFAULT(EnableInvokeDynamic)) { |
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
3051 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
|
3052 } else { |
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
3053 EnableInvokeDynamic = true; |
726
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
712
diff
changeset
|
3054 } |
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
712
diff
changeset
|
3055 } |
2416
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
3056 |
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
3057 // 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
|
3058 if (!JDK_Version::is_gte_jdk17x_version()) { |
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
3059 if (EnableInvokeDynamic) { |
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
3060 if (!FLAG_IS_DEFAULT(EnableInvokeDynamic)) { |
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
3061 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
|
3062 } |
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
3063 EnableInvokeDynamic = false; |
710 | 3064 } |
3065 } | |
2416
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
3066 |
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
3067 if (EnableInvokeDynamic && ScavengeRootsInCode == 0) { |
989
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
932
diff
changeset
|
3068 if (!FLAG_IS_DEFAULT(ScavengeRootsInCode)) { |
2416
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
3069 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
|
3070 } |
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
932
diff
changeset
|
3071 ScavengeRootsInCode = 1; |
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
932
diff
changeset
|
3072 } |
2376
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
never
parents:
2370
diff
changeset
|
3073 if (!JavaObjectsInPerm && ScavengeRootsInCode == 0) { |
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
never
parents:
2370
diff
changeset
|
3074 if (!FLAG_IS_DEFAULT(ScavengeRootsInCode)) { |
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
never
parents:
2370
diff
changeset
|
3075 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
|
3076 } |
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
never
parents:
2370
diff
changeset
|
3077 ScavengeRootsInCode = 1; |
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
never
parents:
2370
diff
changeset
|
3078 } |
710 | 3079 |
0 | 3080 if (PrintGCDetails) { |
3081 // Turn on -verbose:gc options as well | |
3082 PrintGC = true; | |
3083 } | |
3084 | |
1571
2d127394260e
6916623: Align object to 16 bytes to use Compressed Oops with java heap up to 64Gb
kvn
parents:
1506
diff
changeset
|
3085 // 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
|
3086 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
|
3087 |
0 | 3088 #ifdef SERIALGC |
1064 | 3089 force_serial_gc(); |
0 | 3090 #endif // SERIALGC |
3091 #ifdef KERNEL | |
3092 no_shared_spaces(); | |
3093 #endif // KERNEL | |
3094 | |
3095 // Set flags based on ergonomics. | |
3096 set_ergonomics_flags(); | |
3097 | |
2362
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
3098 set_shared_spaces_flags(); |
1135
e66fd840cb6b
6893081: method handle & invokedynamic code needs additional cleanup (post 6815692, 6858164)
twisti
parents:
1131
diff
changeset
|
3099 |
10
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
3100 // Check the GC selections again. |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
3101 if (!check_gc_consistency()) { |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
3102 return JNI_EINVAL; |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
3103 } |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
3104 |
1783 | 3105 if (TieredCompilation) { |
3106 set_tiered_flags(); | |
3107 } else { | |
3108 // Check if the policy is valid. Policies 0 and 1 are valid for non-tiered setup. | |
3109 if (CompilationPolicyChoice >= 2) { | |
3110 vm_exit_during_initialization( | |
3111 "Incompatible compilation policy selected", NULL); | |
3112 } | |
3113 } | |
3114 | |
1145
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1074
diff
changeset
|
3115 #ifndef KERNEL |
2368
dde920245681
6896099: Integrate CMS heap ergo with default heap sizing ergo
ysr
parents:
2366
diff
changeset
|
3116 // Set heap size based on available physical memory |
dde920245681
6896099: Integrate CMS heap ergo with default heap sizing ergo
ysr
parents:
2366
diff
changeset
|
3117 set_heap_size(); |
dde920245681
6896099: Integrate CMS heap ergo with default heap sizing ergo
ysr
parents:
2366
diff
changeset
|
3118 // Set per-collector flags |
dde920245681
6896099: Integrate CMS heap ergo with default heap sizing ergo
ysr
parents:
2366
diff
changeset
|
3119 if (UseParallelGC || UseParallelOldGC) { |
dde920245681
6896099: Integrate CMS heap ergo with default heap sizing ergo
ysr
parents:
2366
diff
changeset
|
3120 set_parallel_gc_flags(); |
dde920245681
6896099: Integrate CMS heap ergo with default heap sizing ergo
ysr
parents:
2366
diff
changeset
|
3121 } 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
|
3122 set_cms_and_parnew_gc_flags(); |
2368
dde920245681
6896099: Integrate CMS heap ergo with default heap sizing ergo
ysr
parents:
2366
diff
changeset
|
3123 } 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
|
3124 set_parnew_gc_flags(); |
dde920245681
6896099: Integrate CMS heap ergo with default heap sizing ergo
ysr
parents:
2366
diff
changeset
|
3125 } else if (UseG1GC) { |
dde920245681
6896099: Integrate CMS heap ergo with default heap sizing ergo
ysr
parents:
2366
diff
changeset
|
3126 set_g1_gc_flags(); |
342
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
135
diff
changeset
|
3127 } |
1145
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1074
diff
changeset
|
3128 #endif // KERNEL |
10
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
3129 |
0 | 3130 #ifdef SERIALGC |
3131 assert(verify_serial_gc_flags(), "SerialGC unset"); | |
3132 #endif // SERIALGC | |
3133 | |
3134 // Set bytecode rewriting flags | |
3135 set_bytecode_flags(); | |
3136 | |
3137 // Set flags if Aggressive optimization flags (-XX:+AggressiveOpts) enabled. | |
3138 set_aggressive_opts_flags(); | |
3139 | |
2239
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3140 // Turn off biased locking for locking debug mode flags, |
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3141 // 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
|
3142 // biased locking. |
2331 | 3143 if (UseHeavyMonitors |
3144 #ifdef COMPILER1 | |
3145 || !UseFastLocking | |
3146 #endif // COMPILER1 | |
3147 ) { | |
2239
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3148 if (!FLAG_IS_DEFAULT(UseBiasedLocking) && UseBiasedLocking) { |
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3149 // 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
|
3150 // can't enable biased locking here |
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3151 warning("Biased Locking is not supported with locking debug flags" |
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3152 "; ignoring UseBiasedLocking flag." ); |
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3153 } |
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3154 UseBiasedLocking = false; |
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3155 } |
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3156 |
0 | 3157 #ifdef CC_INTERP |
1131 | 3158 // Clear flags not supported by the C++ interpreter |
3159 FLAG_SET_DEFAULT(ProfileInterpreter, false); | |
0 | 3160 FLAG_SET_DEFAULT(UseBiasedLocking, false); |
1131 | 3161 LP64_ONLY(FLAG_SET_DEFAULT(UseCompressedOops, false)); |
3162 #endif // CC_INTERP | |
3163 | |
420
a1980da045cc
6462850: generate biased locking code in C2 ideal graph
kvn
parents:
416
diff
changeset
|
3164 #ifdef COMPILER2 |
a1980da045cc
6462850: generate biased locking code in C2 ideal graph
kvn
parents:
416
diff
changeset
|
3165 if (!UseBiasedLocking || EmitSync != 0) { |
a1980da045cc
6462850: generate biased locking code in C2 ideal graph
kvn
parents:
416
diff
changeset
|
3166 UseOptoBiasInlining = false; |
a1980da045cc
6462850: generate biased locking code in C2 ideal graph
kvn
parents:
416
diff
changeset
|
3167 } |
4777 | 3168 if (!EliminateLocks) { |
3169 EliminateNestedLocks = false; | |
3170 } | |
420
a1980da045cc
6462850: generate biased locking code in C2 ideal graph
kvn
parents:
416
diff
changeset
|
3171 #endif |
a1980da045cc
6462850: generate biased locking code in C2 ideal graph
kvn
parents:
416
diff
changeset
|
3172 |
1155
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1150
diff
changeset
|
3173 if (PrintAssembly && FLAG_IS_DEFAULT(DebugNonSafepoints)) { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1150
diff
changeset
|
3174 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
|
3175 DebugNonSafepoints = true; |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1150
diff
changeset
|
3176 } |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1150
diff
changeset
|
3177 |
1188
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents:
1161
diff
changeset
|
3178 #ifndef PRODUCT |
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents:
1161
diff
changeset
|
3179 if (CompileTheWorld) { |
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents:
1161
diff
changeset
|
3180 // 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
|
3181 if (FLAG_IS_DEFAULT(NmethodSweepFraction)) { |
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents:
1161
diff
changeset
|
3182 NmethodSweepFraction = 1; |
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents:
1161
diff
changeset
|
3183 } |
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents:
1161
diff
changeset
|
3184 } |
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents:
1161
diff
changeset
|
3185 #endif |
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents:
1161
diff
changeset
|
3186 |
0 | 3187 if (PrintCommandLineFlags) { |
4773 | 3188 CommandLineFlags::printSetFlags(tty); |
0 | 3189 } |
3190 | |
1681
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
3191 // Apply CPU specific policy for the BiasedLocking |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
3192 if (UseBiasedLocking) { |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
3193 if (!VM_Version::use_biased_locking() && |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
3194 !(FLAG_IS_CMDLINE(UseBiasedLocking))) { |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
3195 UseBiasedLocking = false; |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
3196 } |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
3197 } |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
3198 |
2302
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
3199 // 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
|
3200 // 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
|
3201 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
|
3202 bool set = false; |
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
3203 CommandLineFlags::wasSetOnCmdline("PauseAtExit", &set); |
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
3204 if (!set) { |
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
3205 FLAG_SET_DEFAULT(PauseAtExit, true); |
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
3206 } |
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
3207 } |
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
3208 |
0 | 3209 return JNI_OK; |
3210 } | |
3211 | |
3212 int Arguments::PropertyList_count(SystemProperty* pl) { | |
3213 int count = 0; | |
3214 while(pl != NULL) { | |
3215 count++; | |
3216 pl = pl->next(); | |
3217 } | |
3218 return count; | |
3219 } | |
3220 | |
3221 const char* Arguments::PropertyList_get_value(SystemProperty *pl, const char* key) { | |
3222 assert(key != NULL, "just checking"); | |
3223 SystemProperty* prop; | |
3224 for (prop = pl; prop != NULL; prop = prop->next()) { | |
3225 if (strcmp(key, prop->key()) == 0) return prop->value(); | |
3226 } | |
3227 return NULL; | |
3228 } | |
3229 | |
3230 const char* Arguments::PropertyList_get_key_at(SystemProperty *pl, int index) { | |
3231 int count = 0; | |
3232 const char* ret_val = NULL; | |
3233 | |
3234 while(pl != NULL) { | |
3235 if(count >= index) { | |
3236 ret_val = pl->key(); | |
3237 break; | |
3238 } | |
3239 count++; | |
3240 pl = pl->next(); | |
3241 } | |
3242 | |
3243 return ret_val; | |
3244 } | |
3245 | |
3246 char* Arguments::PropertyList_get_value_at(SystemProperty* pl, int index) { | |
3247 int count = 0; | |
3248 char* ret_val = NULL; | |
3249 | |
3250 while(pl != NULL) { | |
3251 if(count >= index) { | |
3252 ret_val = pl->value(); | |
3253 break; | |
3254 } | |
3255 count++; | |
3256 pl = pl->next(); | |
3257 } | |
3258 | |
3259 return ret_val; | |
3260 } | |
3261 | |
3262 void Arguments::PropertyList_add(SystemProperty** plist, SystemProperty *new_p) { | |
3263 SystemProperty* p = *plist; | |
3264 if (p == NULL) { | |
3265 *plist = new_p; | |
3266 } else { | |
3267 while (p->next() != NULL) { | |
3268 p = p->next(); | |
3269 } | |
3270 p->set_next(new_p); | |
3271 } | |
3272 } | |
3273 | |
3274 void Arguments::PropertyList_add(SystemProperty** plist, const char* k, char* v) { | |
3275 if (plist == NULL) | |
3276 return; | |
3277 | |
3278 SystemProperty* new_p = new SystemProperty(k, v, true); | |
3279 PropertyList_add(plist, new_p); | |
3280 } | |
3281 | |
3282 // This add maintains unique property key in the list. | |
691 | 3283 void Arguments::PropertyList_unique_add(SystemProperty** plist, const char* k, char* v, jboolean append) { |
0 | 3284 if (plist == NULL) |
3285 return; | |
3286 | |
3287 // If property key exist then update with new value. | |
3288 SystemProperty* prop; | |
3289 for (prop = *plist; prop != NULL; prop = prop->next()) { | |
3290 if (strcmp(k, prop->key()) == 0) { | |
691 | 3291 if (append) { |
3292 prop->append_value(v); | |
3293 } else { | |
3294 prop->set_value(v); | |
3295 } | |
0 | 3296 return; |
3297 } | |
3298 } | |
3299 | |
3300 PropertyList_add(plist, k, v); | |
3301 } | |
3302 | |
3303 #ifdef KERNEL | |
3304 char *Arguments::get_kernel_properties() { | |
3305 // Find properties starting with kernel and append them to string | |
3306 // We need to find out how long they are first because the URL's that they | |
3307 // might point to could get long. | |
3308 int length = 0; | |
3309 SystemProperty* prop; | |
3310 for (prop = _system_properties; prop != NULL; prop = prop->next()) { | |
3311 if (strncmp(prop->key(), "kernel.", 7 ) == 0) { | |
3312 length += (strlen(prop->key()) + strlen(prop->value()) + 5); // "-D =" | |
3313 } | |
3314 } | |
3315 // Add one for null terminator. | |
3316 char *props = AllocateHeap(length + 1, "get_kernel_properties"); | |
3317 if (length != 0) { | |
3318 int pos = 0; | |
3319 for (prop = _system_properties; prop != NULL; prop = prop->next()) { | |
3320 if (strncmp(prop->key(), "kernel.", 7 ) == 0) { | |
3321 jio_snprintf(&props[pos], length-pos, | |
3322 "-D%s=%s ", prop->key(), prop->value()); | |
3323 pos = strlen(props); | |
3324 } | |
3325 } | |
3326 } | |
3327 // null terminate props in case of null | |
3328 props[length] = '\0'; | |
3329 return props; | |
3330 } | |
3331 #endif // KERNEL | |
3332 | |
3333 // Copies src into buf, replacing "%%" with "%" and "%p" with pid | |
3334 // Returns true if all of the source pointed by src has been copied over to | |
3335 // the destination buffer pointed by buf. Otherwise, returns false. | |
3336 // Notes: | |
3337 // 1. If the length (buflen) of the destination buffer excluding the | |
3338 // NULL terminator character is not long enough for holding the expanded | |
3339 // pid characters, it also returns false instead of returning the partially | |
3340 // expanded one. | |
3341 // 2. The passed in "buflen" should be large enough to hold the null terminator. | |
3342 bool Arguments::copy_expand_pid(const char* src, size_t srclen, | |
3343 char* buf, size_t buflen) { | |
3344 const char* p = src; | |
3345 char* b = buf; | |
3346 const char* src_end = &src[srclen]; | |
3347 char* buf_end = &buf[buflen - 1]; | |
3348 | |
3349 while (p < src_end && b < buf_end) { | |
3350 if (*p == '%') { | |
3351 switch (*(++p)) { | |
3352 case '%': // "%%" ==> "%" | |
3353 *b++ = *p++; | |
3354 break; | |
3355 case 'p': { // "%p" ==> current process id | |
3356 // buf_end points to the character before the last character so | |
3357 // that we could write '\0' to the end of the buffer. | |
3358 size_t buf_sz = buf_end - b + 1; | |
3359 int ret = jio_snprintf(b, buf_sz, "%d", os::current_process_id()); | |
3360 | |
3361 // if jio_snprintf fails or the buffer is not long enough to hold | |
3362 // the expanded pid, returns false. | |
3363 if (ret < 0 || ret >= (int)buf_sz) { | |
3364 return false; | |
3365 } else { | |
3366 b += ret; | |
3367 assert(*b == '\0', "fail in copy_expand_pid"); | |
3368 if (p == src_end && b == buf_end + 1) { | |
3369 // reach the end of the buffer. | |
3370 return true; | |
3371 } | |
3372 } | |
3373 p++; | |
3374 break; | |
3375 } | |
3376 default : | |
3377 *b++ = '%'; | |
3378 } | |
3379 } else { | |
3380 *b++ = *p++; | |
3381 } | |
3382 } | |
3383 *b = '\0'; | |
3384 return (p == src_end); // return false if not all of the source was copied | |
3385 } |