Mercurial > hg > truffle
annotate src/share/vm/runtime/arguments.cpp @ 4142:bc8527f3071c
Adjust code base to new level of warnings.
author | Thomas Wuerthinger <thomas.wuerthinger@oracle.com> |
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date | Sun, 18 Dec 2011 05:24:06 +0100 |
parents | 04b9a2566eec |
children | 394404b2d9bd |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 1997, 2011, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #include "precompiled.hpp" |
26 #include "classfile/javaAssertions.hpp" | |
27 #include "compiler/compilerOracle.hpp" | |
28 #include "memory/allocation.inline.hpp" | |
29 #include "memory/cardTableRS.hpp" | |
30 #include "memory/referenceProcessor.hpp" | |
31 #include "memory/universe.inline.hpp" | |
32 #include "oops/oop.inline.hpp" | |
33 #include "prims/jvmtiExport.hpp" | |
34 #include "runtime/arguments.hpp" | |
35 #include "runtime/globals_extension.hpp" | |
36 #include "runtime/java.hpp" | |
37 #include "services/management.hpp" | |
38 #include "utilities/defaultStream.hpp" | |
39 #include "utilities/taskqueue.hpp" | |
40 #ifdef TARGET_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; | |
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64 char** Arguments::_graal_args_array = NULL; |
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65 int Arguments::_num_graal_args = 0; |
0 | 66 char* Arguments::_java_command = NULL; |
67 SystemProperty* Arguments::_system_properties = NULL; | |
68 const char* Arguments::_gc_log_filename = NULL; | |
69 bool Arguments::_has_profile = false; | |
70 bool Arguments::_has_alloc_profile = false; | |
71 uintx Arguments::_min_heap_size = 0; | |
72 Arguments::Mode Arguments::_mode = _mixed; | |
73 bool Arguments::_java_compiler = false; | |
74 bool Arguments::_xdebug_mode = false; | |
75 const char* Arguments::_java_vendor_url_bug = DEFAULT_VENDOR_URL_BUG; | |
76 const char* Arguments::_sun_java_launcher = DEFAULT_JAVA_LAUNCHER; | |
77 int Arguments::_sun_java_launcher_pid = -1; | |
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78 bool Arguments::_created_by_gamma_launcher = false; |
0 | 79 |
80 // These parameters are reset in method parse_vm_init_args(JavaVMInitArgs*) | |
81 bool Arguments::_AlwaysCompileLoopMethods = AlwaysCompileLoopMethods; | |
82 bool Arguments::_UseOnStackReplacement = UseOnStackReplacement; | |
83 bool Arguments::_BackgroundCompilation = BackgroundCompilation; | |
84 bool Arguments::_ClipInlining = ClipInlining; | |
85 | |
86 char* Arguments::SharedArchivePath = NULL; | |
87 | |
88 AgentLibraryList Arguments::_libraryList; | |
89 AgentLibraryList Arguments::_agentList; | |
90 | |
91 abort_hook_t Arguments::_abort_hook = NULL; | |
92 exit_hook_t Arguments::_exit_hook = NULL; | |
93 vfprintf_hook_t Arguments::_vfprintf_hook = NULL; | |
94 | |
95 | |
96 SystemProperty *Arguments::_java_ext_dirs = NULL; | |
97 SystemProperty *Arguments::_java_endorsed_dirs = NULL; | |
98 SystemProperty *Arguments::_sun_boot_library_path = NULL; | |
99 SystemProperty *Arguments::_java_library_path = NULL; | |
100 SystemProperty *Arguments::_java_home = NULL; | |
101 SystemProperty *Arguments::_java_class_path = NULL; | |
102 SystemProperty *Arguments::_sun_boot_class_path = NULL; | |
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103 SystemProperty *Arguments::_compiler_class_path = NULL; |
0 | 104 |
105 char* Arguments::_meta_index_path = NULL; | |
106 char* Arguments::_meta_index_dir = NULL; | |
107 | |
108 static bool force_client_mode = false; | |
109 | |
110 // Check if head of 'option' matches 'name', and sets 'tail' remaining part of option string | |
111 | |
112 static bool match_option(const JavaVMOption *option, const char* name, | |
113 const char** tail) { | |
114 int len = (int)strlen(name); | |
115 if (strncmp(option->optionString, name, len) == 0) { | |
116 *tail = option->optionString + len; | |
117 return true; | |
118 } else { | |
119 return false; | |
120 } | |
121 } | |
122 | |
123 static void logOption(const char* opt) { | |
124 if (PrintVMOptions) { | |
125 jio_fprintf(defaultStream::output_stream(), "VM option '%s'\n", opt); | |
126 } | |
127 } | |
128 | |
129 // Process java launcher properties. | |
130 void Arguments::process_sun_java_launcher_properties(JavaVMInitArgs* args) { | |
131 // See if sun.java.launcher or sun.java.launcher.pid is defined. | |
132 // Must do this before setting up other system properties, | |
133 // as some of them may depend on launcher type. | |
134 for (int index = 0; index < args->nOptions; index++) { | |
135 const JavaVMOption* option = args->options + index; | |
136 const char* tail; | |
137 | |
138 if (match_option(option, "-Dsun.java.launcher=", &tail)) { | |
139 process_java_launcher_argument(tail, option->extraInfo); | |
140 continue; | |
141 } | |
142 if (match_option(option, "-Dsun.java.launcher.pid=", &tail)) { | |
143 _sun_java_launcher_pid = atoi(tail); | |
144 continue; | |
145 } | |
146 } | |
147 } | |
148 | |
149 // Initialize system properties key and value. | |
150 void Arguments::init_system_properties() { | |
151 | |
152 PropertyList_add(&_system_properties, new SystemProperty("java.vm.specification.name", | |
153 "Java Virtual Machine Specification", false)); | |
154 PropertyList_add(&_system_properties, new SystemProperty("java.vm.version", VM_Version::vm_release(), false)); | |
155 PropertyList_add(&_system_properties, new SystemProperty("java.vm.name", VM_Version::vm_name(), false)); | |
156 PropertyList_add(&_system_properties, new SystemProperty("java.vm.info", VM_Version::vm_info_string(), true)); | |
157 | |
158 // following are JVMTI agent writeable properties. | |
159 // Properties values are set to NULL and they are | |
160 // os specific they are initialized in os::init_system_properties_values(). | |
161 _java_ext_dirs = new SystemProperty("java.ext.dirs", NULL, true); | |
162 _java_endorsed_dirs = new SystemProperty("java.endorsed.dirs", NULL, true); | |
163 _sun_boot_library_path = new SystemProperty("sun.boot.library.path", NULL, true); | |
164 _java_library_path = new SystemProperty("java.library.path", NULL, true); | |
165 _java_home = new SystemProperty("java.home", NULL, true); | |
166 _sun_boot_class_path = new SystemProperty("sun.boot.class.path", NULL, true); | |
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167 _compiler_class_path = new SystemProperty("compiler.class.path", NULL, true); |
0 | 168 |
169 _java_class_path = new SystemProperty("java.class.path", "", true); | |
170 | |
171 // Add to System Property list. | |
172 PropertyList_add(&_system_properties, _java_ext_dirs); | |
173 PropertyList_add(&_system_properties, _java_endorsed_dirs); | |
174 PropertyList_add(&_system_properties, _sun_boot_library_path); | |
175 PropertyList_add(&_system_properties, _java_library_path); | |
176 PropertyList_add(&_system_properties, _java_home); | |
177 PropertyList_add(&_system_properties, _java_class_path); | |
178 PropertyList_add(&_system_properties, _sun_boot_class_path); | |
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179 PropertyList_add(&_system_properties, _compiler_class_path); |
0 | 180 |
181 // Set OS specific system properties values | |
182 os::init_system_properties_values(); | |
183 } | |
184 | |
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185 |
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186 // Update/Initialize System properties after JDK version number is known |
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187 void Arguments::init_version_specific_system_properties() { |
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188 enum { bufsz = 16 }; |
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189 char buffer[bufsz]; |
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190 const char* spec_vendor = "Sun Microsystems Inc."; |
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191 uint32_t spec_version = 0; |
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192 |
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193 if (JDK_Version::is_gte_jdk17x_version()) { |
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194 spec_vendor = "Oracle Corporation"; |
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195 spec_version = JDK_Version::current().major_version(); |
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196 } |
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197 jio_snprintf(buffer, bufsz, "1." UINT32_FORMAT, spec_version); |
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198 |
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199 PropertyList_add(&_system_properties, |
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200 new SystemProperty("java.vm.specification.vendor", spec_vendor, false)); |
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201 PropertyList_add(&_system_properties, |
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202 new SystemProperty("java.vm.specification.version", buffer, false)); |
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203 PropertyList_add(&_system_properties, |
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204 new SystemProperty("java.vm.vendor", VM_Version::vm_vendor(), false)); |
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205 } |
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206 |
242 | 207 /** |
208 * Provide a slightly more user-friendly way of eliminating -XX flags. | |
209 * When a flag is eliminated, it can be added to this list in order to | |
210 * continue accepting this flag on the command-line, while issuing a warning | |
211 * and ignoring the value. Once the JDK version reaches the 'accept_until' | |
212 * limit, we flatly refuse to admit the existence of the flag. This allows | |
213 * a flag to die correctly over JDK releases using HSX. | |
214 */ | |
215 typedef struct { | |
216 const char* name; | |
217 JDK_Version obsoleted_in; // when the flag went away | |
218 JDK_Version accept_until; // which version to start denying the existence | |
219 } ObsoleteFlag; | |
0 | 220 |
242 | 221 static ObsoleteFlag obsolete_jvm_flags[] = { |
222 { "UseTrainGC", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
223 { "UseSpecialLargeObjectHandling", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
224 { "UseOversizedCarHandling", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
225 { "TraceCarAllocation", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
226 { "PrintTrainGCProcessingStats", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
227 { "LogOfCarSpaceSize", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
228 { "OversizedCarThreshold", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
229 { "MinTickInterval", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
230 { "DefaultTickInterval", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
231 { "MaxTickInterval", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
232 { "DelayTickAdjustment", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
233 { "ProcessingToTenuringRatio", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
234 { "MinTrainLength", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
235 { "AppendRatio", JDK_Version::jdk_update(6,10), JDK_Version::jdk(7) }, | |
1064 | 236 { "DefaultMaxRAM", JDK_Version::jdk_update(6,18), JDK_Version::jdk(7) }, |
237 { "DefaultInitialRAMFraction", | |
238 JDK_Version::jdk_update(6,18), JDK_Version::jdk(7) }, | |
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239 { "UseDepthFirstScavengeOrder", |
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240 JDK_Version::jdk_update(6,22), JDK_Version::jdk(7) }, |
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241 { "HandlePromotionFailure", |
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242 JDK_Version::jdk_update(6,24), JDK_Version::jdk(8) }, |
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243 { "MaxLiveObjectEvacuationRatio", |
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244 JDK_Version::jdk_update(6,24), JDK_Version::jdk(8) }, |
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245 { "ForceSharedSpaces", JDK_Version::jdk_update(6,25), JDK_Version::jdk(8) }, |
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246 { "UseParallelOldGCCompacting", |
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247 JDK_Version::jdk_update(6,27), JDK_Version::jdk(8) }, |
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248 { "UseParallelDensePrefixUpdate", |
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249 JDK_Version::jdk_update(6,27), JDK_Version::jdk(8) }, |
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250 { "UseParallelOldGCDensePrefix", |
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251 JDK_Version::jdk_update(6,27), JDK_Version::jdk(8) }, |
2460 | 252 { "AllowTransitionalJSR292", JDK_Version::jdk(7), JDK_Version::jdk(8) }, |
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253 { "UseCompressedStrings", JDK_Version::jdk(7), JDK_Version::jdk(8) }, |
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254 #ifdef PRODUCT |
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255 { "DesiredMethodLimit", |
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256 JDK_Version::jdk_update(7, 2), JDK_Version::jdk(8) }, |
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257 #endif // PRODUCT |
242 | 258 { NULL, JDK_Version(0), JDK_Version(0) } |
259 }; | |
260 | |
261 // Returns true if the flag is obsolete and fits into the range specified | |
262 // for being ignored. In the case that the flag is ignored, the 'version' | |
263 // value is filled in with the version number when the flag became | |
264 // obsolete so that that value can be displayed to the user. | |
265 bool Arguments::is_newly_obsolete(const char *s, JDK_Version* version) { | |
0 | 266 int i = 0; |
242 | 267 assert(version != NULL, "Must provide a version buffer"); |
268 while (obsolete_jvm_flags[i].name != NULL) { | |
269 const ObsoleteFlag& flag_status = obsolete_jvm_flags[i]; | |
0 | 270 // <flag>=xxx form |
271 // [-|+]<flag> form | |
242 | 272 if ((strncmp(flag_status.name, s, strlen(flag_status.name)) == 0) || |
0 | 273 ((s[0] == '+' || s[0] == '-') && |
242 | 274 (strncmp(flag_status.name, &s[1], strlen(flag_status.name)) == 0))) { |
275 if (JDK_Version::current().compare(flag_status.accept_until) == -1) { | |
276 *version = flag_status.obsoleted_in; | |
277 return true; | |
278 } | |
0 | 279 } |
280 i++; | |
281 } | |
282 return false; | |
283 } | |
284 | |
285 // Constructs the system class path (aka boot class path) from the following | |
286 // components, in order: | |
287 // | |
288 // prefix // from -Xbootclasspath/p:... | |
289 // endorsed // the expansion of -Djava.endorsed.dirs=... | |
290 // base // from os::get_system_properties() or -Xbootclasspath= | |
291 // suffix // from -Xbootclasspath/a:... | |
292 // | |
293 // java.endorsed.dirs is a list of directories; any jar or zip files in the | |
294 // directories are added to the sysclasspath just before the base. | |
295 // | |
296 // This could be AllStatic, but it isn't needed after argument processing is | |
297 // complete. | |
298 class SysClassPath: public StackObj { | |
299 public: | |
300 SysClassPath(const char* base); | |
301 ~SysClassPath(); | |
302 | |
303 inline void set_base(const char* base); | |
304 inline void add_prefix(const char* prefix); | |
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305 inline void add_suffix_to_prefix(const char* suffix); |
0 | 306 inline void add_suffix(const char* suffix); |
307 inline void reset_path(const char* base); | |
308 | |
309 // Expand the jar/zip files in each directory listed by the java.endorsed.dirs | |
310 // property. Must be called after all command-line arguments have been | |
311 // processed (in particular, -Djava.endorsed.dirs=...) and before calling | |
312 // combined_path(). | |
313 void expand_endorsed(); | |
314 | |
315 inline const char* get_base() const { return _items[_scp_base]; } | |
316 inline const char* get_prefix() const { return _items[_scp_prefix]; } | |
317 inline const char* get_suffix() const { return _items[_scp_suffix]; } | |
318 inline const char* get_endorsed() const { return _items[_scp_endorsed]; } | |
319 | |
320 // Combine all the components into a single c-heap-allocated string; caller | |
321 // must free the string if/when no longer needed. | |
322 char* combined_path(); | |
323 | |
324 private: | |
325 // Utility routines. | |
326 static char* add_to_path(const char* path, const char* str, bool prepend); | |
327 static char* add_jars_to_path(char* path, const char* directory); | |
328 | |
329 inline void reset_item_at(int index); | |
330 | |
331 // Array indices for the items that make up the sysclasspath. All except the | |
332 // base are allocated in the C heap and freed by this class. | |
333 enum { | |
334 _scp_prefix, // from -Xbootclasspath/p:... | |
335 _scp_endorsed, // the expansion of -Djava.endorsed.dirs=... | |
336 _scp_base, // the default sysclasspath | |
337 _scp_suffix, // from -Xbootclasspath/a:... | |
338 _scp_nitems // the number of items, must be last. | |
339 }; | |
340 | |
341 const char* _items[_scp_nitems]; | |
342 DEBUG_ONLY(bool _expansion_done;) | |
343 }; | |
344 | |
345 SysClassPath::SysClassPath(const char* base) { | |
346 memset(_items, 0, sizeof(_items)); | |
347 _items[_scp_base] = base; | |
348 DEBUG_ONLY(_expansion_done = false;) | |
349 } | |
350 | |
351 SysClassPath::~SysClassPath() { | |
352 // Free everything except the base. | |
353 for (int i = 0; i < _scp_nitems; ++i) { | |
354 if (i != _scp_base) reset_item_at(i); | |
355 } | |
356 DEBUG_ONLY(_expansion_done = false;) | |
357 } | |
358 | |
359 inline void SysClassPath::set_base(const char* base) { | |
360 _items[_scp_base] = base; | |
361 } | |
362 | |
363 inline void SysClassPath::add_prefix(const char* prefix) { | |
364 _items[_scp_prefix] = add_to_path(_items[_scp_prefix], prefix, true); | |
365 } | |
366 | |
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367 inline void SysClassPath::add_suffix_to_prefix(const char* suffix) { |
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368 _items[_scp_prefix] = add_to_path(_items[_scp_prefix], suffix, false); |
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369 } |
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370 |
0 | 371 inline void SysClassPath::add_suffix(const char* suffix) { |
372 _items[_scp_suffix] = add_to_path(_items[_scp_suffix], suffix, false); | |
373 } | |
374 | |
375 inline void SysClassPath::reset_item_at(int index) { | |
376 assert(index < _scp_nitems && index != _scp_base, "just checking"); | |
377 if (_items[index] != NULL) { | |
378 FREE_C_HEAP_ARRAY(char, _items[index]); | |
379 _items[index] = NULL; | |
380 } | |
381 } | |
382 | |
383 inline void SysClassPath::reset_path(const char* base) { | |
384 // Clear the prefix and suffix. | |
385 reset_item_at(_scp_prefix); | |
386 reset_item_at(_scp_suffix); | |
387 set_base(base); | |
388 } | |
389 | |
390 //------------------------------------------------------------------------------ | |
391 | |
392 void SysClassPath::expand_endorsed() { | |
393 assert(_items[_scp_endorsed] == NULL, "can only be called once."); | |
394 | |
395 const char* path = Arguments::get_property("java.endorsed.dirs"); | |
396 if (path == NULL) { | |
397 path = Arguments::get_endorsed_dir(); | |
398 assert(path != NULL, "no default for java.endorsed.dirs"); | |
399 } | |
400 | |
401 char* expanded_path = NULL; | |
402 const char separator = *os::path_separator(); | |
403 const char* const end = path + strlen(path); | |
404 while (path < end) { | |
405 const char* tmp_end = strchr(path, separator); | |
406 if (tmp_end == NULL) { | |
407 expanded_path = add_jars_to_path(expanded_path, path); | |
408 path = end; | |
409 } else { | |
410 char* dirpath = NEW_C_HEAP_ARRAY(char, tmp_end - path + 1); | |
411 memcpy(dirpath, path, tmp_end - path); | |
412 dirpath[tmp_end - path] = '\0'; | |
413 expanded_path = add_jars_to_path(expanded_path, dirpath); | |
414 FREE_C_HEAP_ARRAY(char, dirpath); | |
415 path = tmp_end + 1; | |
416 } | |
417 } | |
418 _items[_scp_endorsed] = expanded_path; | |
419 DEBUG_ONLY(_expansion_done = true;) | |
420 } | |
421 | |
422 // Combine the bootclasspath elements, some of which may be null, into a single | |
423 // c-heap-allocated string. | |
424 char* SysClassPath::combined_path() { | |
425 assert(_items[_scp_base] != NULL, "empty default sysclasspath"); | |
426 assert(_expansion_done, "must call expand_endorsed() first."); | |
427 | |
428 size_t lengths[_scp_nitems]; | |
429 size_t total_len = 0; | |
430 | |
431 const char separator = *os::path_separator(); | |
432 | |
433 // Get the lengths. | |
434 int i; | |
435 for (i = 0; i < _scp_nitems; ++i) { | |
436 if (_items[i] != NULL) { | |
437 lengths[i] = strlen(_items[i]); | |
438 // Include space for the separator char (or a NULL for the last item). | |
439 total_len += lengths[i] + 1; | |
440 } | |
441 } | |
442 assert(total_len > 0, "empty sysclasspath not allowed"); | |
443 | |
444 // Copy the _items to a single string. | |
445 char* cp = NEW_C_HEAP_ARRAY(char, total_len); | |
446 char* cp_tmp = cp; | |
447 for (i = 0; i < _scp_nitems; ++i) { | |
448 if (_items[i] != NULL) { | |
449 memcpy(cp_tmp, _items[i], lengths[i]); | |
450 cp_tmp += lengths[i]; | |
451 *cp_tmp++ = separator; | |
452 } | |
453 } | |
454 *--cp_tmp = '\0'; // Replace the extra separator. | |
455 return cp; | |
456 } | |
457 | |
458 // Note: path must be c-heap-allocated (or NULL); it is freed if non-null. | |
459 char* | |
460 SysClassPath::add_to_path(const char* path, const char* str, bool prepend) { | |
461 char *cp; | |
462 | |
463 assert(str != NULL, "just checking"); | |
464 if (path == NULL) { | |
465 size_t len = strlen(str) + 1; | |
466 cp = NEW_C_HEAP_ARRAY(char, len); | |
467 memcpy(cp, str, len); // copy the trailing null | |
468 } else { | |
469 const char separator = *os::path_separator(); | |
470 size_t old_len = strlen(path); | |
471 size_t str_len = strlen(str); | |
472 size_t len = old_len + str_len + 2; | |
473 | |
474 if (prepend) { | |
475 cp = NEW_C_HEAP_ARRAY(char, len); | |
476 char* cp_tmp = cp; | |
477 memcpy(cp_tmp, str, str_len); | |
478 cp_tmp += str_len; | |
479 *cp_tmp = separator; | |
480 memcpy(++cp_tmp, path, old_len + 1); // copy the trailing null | |
481 FREE_C_HEAP_ARRAY(char, path); | |
482 } else { | |
483 cp = REALLOC_C_HEAP_ARRAY(char, path, len); | |
484 char* cp_tmp = cp + old_len; | |
485 *cp_tmp = separator; | |
486 memcpy(++cp_tmp, str, str_len + 1); // copy the trailing null | |
487 } | |
488 } | |
489 return cp; | |
490 } | |
491 | |
492 // Scan the directory and append any jar or zip files found to path. | |
493 // Note: path must be c-heap-allocated (or NULL); it is freed if non-null. | |
494 char* SysClassPath::add_jars_to_path(char* path, const char* directory) { | |
495 DIR* dir = os::opendir(directory); | |
496 if (dir == NULL) return path; | |
497 | |
498 char dir_sep[2] = { '\0', '\0' }; | |
499 size_t directory_len = strlen(directory); | |
500 const char fileSep = *os::file_separator(); | |
501 if (directory[directory_len - 1] != fileSep) dir_sep[0] = fileSep; | |
502 | |
503 /* Scan the directory for jars/zips, appending them to path. */ | |
504 struct dirent *entry; | |
505 char *dbuf = NEW_C_HEAP_ARRAY(char, os::readdir_buf_size(directory)); | |
506 while ((entry = os::readdir(dir, (dirent *) dbuf)) != NULL) { | |
507 const char* name = entry->d_name; | |
508 const char* ext = name + strlen(name) - 4; | |
509 bool isJarOrZip = ext > name && | |
510 (os::file_name_strcmp(ext, ".jar") == 0 || | |
511 os::file_name_strcmp(ext, ".zip") == 0); | |
512 if (isJarOrZip) { | |
513 char* jarpath = NEW_C_HEAP_ARRAY(char, directory_len + 2 + strlen(name)); | |
514 sprintf(jarpath, "%s%s%s", directory, dir_sep, name); | |
515 path = add_to_path(path, jarpath, false); | |
516 FREE_C_HEAP_ARRAY(char, jarpath); | |
517 } | |
518 } | |
519 FREE_C_HEAP_ARRAY(char, dbuf); | |
520 os::closedir(dir); | |
521 return path; | |
522 } | |
523 | |
524 // Parses a memory size specification string. | |
489
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525 static bool atomull(const char *s, julong* result) { |
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526 julong n = 0; |
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527 int args_read = sscanf(s, os::julong_format_specifier(), &n); |
0 | 528 if (args_read != 1) { |
529 return false; | |
530 } | |
531 while (*s != '\0' && isdigit(*s)) { | |
532 s++; | |
533 } | |
534 // 4705540: illegal if more characters are found after the first non-digit | |
535 if (strlen(s) > 1) { | |
536 return false; | |
537 } | |
538 switch (*s) { | |
539 case 'T': case 't': | |
540 *result = n * G * K; | |
489
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541 // Check for overflow. |
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542 if (*result/((julong)G * K) != n) return false; |
0 | 543 return true; |
544 case 'G': case 'g': | |
545 *result = n * G; | |
489
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546 if (*result/G != n) return false; |
0 | 547 return true; |
548 case 'M': case 'm': | |
549 *result = n * M; | |
489
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550 if (*result/M != n) return false; |
0 | 551 return true; |
552 case 'K': case 'k': | |
553 *result = n * K; | |
489
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554 if (*result/K != n) return false; |
0 | 555 return true; |
556 case '\0': | |
557 *result = n; | |
558 return true; | |
559 default: | |
560 return false; | |
561 } | |
562 } | |
563 | |
489
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564 Arguments::ArgsRange Arguments::check_memory_size(julong size, julong min_size) { |
0 | 565 if (size < min_size) return arg_too_small; |
566 // Check that size will fit in a size_t (only relevant on 32-bit) | |
489
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567 if (size > max_uintx) return arg_too_big; |
0 | 568 return arg_in_range; |
569 } | |
570 | |
571 // Describe an argument out of range error | |
572 void Arguments::describe_range_error(ArgsRange errcode) { | |
573 switch(errcode) { | |
574 case arg_too_big: | |
575 jio_fprintf(defaultStream::error_stream(), | |
576 "The specified size exceeds the maximum " | |
577 "representable size.\n"); | |
578 break; | |
579 case arg_too_small: | |
580 case arg_unreadable: | |
581 case arg_in_range: | |
582 // do nothing for now | |
583 break; | |
584 default: | |
585 ShouldNotReachHere(); | |
586 } | |
587 } | |
588 | |
589 static bool set_bool_flag(char* name, bool value, FlagValueOrigin origin) { | |
590 return CommandLineFlags::boolAtPut(name, &value, origin); | |
591 } | |
592 | |
593 static bool set_fp_numeric_flag(char* name, char* value, FlagValueOrigin origin) { | |
594 double v; | |
595 if (sscanf(value, "%lf", &v) != 1) { | |
596 return false; | |
597 } | |
598 | |
599 if (CommandLineFlags::doubleAtPut(name, &v, origin)) { | |
600 return true; | |
601 } | |
602 return false; | |
603 } | |
604 | |
605 static bool set_numeric_flag(char* name, char* value, FlagValueOrigin origin) { | |
489
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606 julong v; |
0 | 607 intx intx_v; |
608 bool is_neg = false; | |
489
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609 // Check the sign first since atomull() parses only unsigned values. |
0 | 610 if (*value == '-') { |
611 if (!CommandLineFlags::intxAt(name, &intx_v)) { | |
612 return false; | |
613 } | |
614 value++; | |
615 is_neg = true; | |
616 } | |
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617 if (!atomull(value, &v)) { |
0 | 618 return false; |
619 } | |
620 intx_v = (intx) v; | |
621 if (is_neg) { | |
622 intx_v = -intx_v; | |
623 } | |
624 if (CommandLineFlags::intxAtPut(name, &intx_v, origin)) { | |
625 return true; | |
626 } | |
627 uintx uintx_v = (uintx) v; | |
628 if (!is_neg && CommandLineFlags::uintxAtPut(name, &uintx_v, origin)) { | |
629 return true; | |
630 } | |
1064 | 631 uint64_t uint64_t_v = (uint64_t) v; |
632 if (!is_neg && CommandLineFlags::uint64_tAtPut(name, &uint64_t_v, origin)) { | |
633 return true; | |
634 } | |
0 | 635 return false; |
636 } | |
637 | |
638 static bool set_string_flag(char* name, const char* value, FlagValueOrigin origin) { | |
639 if (!CommandLineFlags::ccstrAtPut(name, &value, origin)) return false; | |
640 // Contract: CommandLineFlags always returns a pointer that needs freeing. | |
641 FREE_C_HEAP_ARRAY(char, value); | |
642 return true; | |
643 } | |
644 | |
645 static bool append_to_string_flag(char* name, const char* new_value, FlagValueOrigin origin) { | |
646 const char* old_value = ""; | |
647 if (!CommandLineFlags::ccstrAt(name, &old_value)) return false; | |
648 size_t old_len = old_value != NULL ? strlen(old_value) : 0; | |
649 size_t new_len = strlen(new_value); | |
650 const char* value; | |
651 char* free_this_too = NULL; | |
652 if (old_len == 0) { | |
653 value = new_value; | |
654 } else if (new_len == 0) { | |
655 value = old_value; | |
656 } else { | |
657 char* buf = NEW_C_HEAP_ARRAY(char, old_len + 1 + new_len + 1); | |
658 // each new setting adds another LINE to the switch: | |
659 sprintf(buf, "%s\n%s", old_value, new_value); | |
660 value = buf; | |
661 free_this_too = buf; | |
662 } | |
663 (void) CommandLineFlags::ccstrAtPut(name, &value, origin); | |
664 // CommandLineFlags always returns a pointer that needs freeing. | |
665 FREE_C_HEAP_ARRAY(char, value); | |
666 if (free_this_too != NULL) { | |
667 // CommandLineFlags made its own copy, so I must delete my own temp. buffer. | |
668 FREE_C_HEAP_ARRAY(char, free_this_too); | |
669 } | |
670 return true; | |
671 } | |
672 | |
673 bool Arguments::parse_argument(const char* arg, FlagValueOrigin origin) { | |
674 | |
675 // range of acceptable characters spelled out for portability reasons | |
676 #define NAME_RANGE "[abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789_]" | |
677 #define BUFLEN 255 | |
678 char name[BUFLEN+1]; | |
679 char dummy; | |
680 | |
681 if (sscanf(arg, "-%" XSTR(BUFLEN) NAME_RANGE "%c", name, &dummy) == 1) { | |
682 return set_bool_flag(name, false, origin); | |
683 } | |
684 if (sscanf(arg, "+%" XSTR(BUFLEN) NAME_RANGE "%c", name, &dummy) == 1) { | |
685 return set_bool_flag(name, true, origin); | |
686 } | |
687 | |
688 char punct; | |
689 if (sscanf(arg, "%" XSTR(BUFLEN) NAME_RANGE "%c", name, &punct) == 2 && punct == '=') { | |
690 const char* value = strchr(arg, '=') + 1; | |
691 Flag* flag = Flag::find_flag(name, strlen(name)); | |
692 if (flag != NULL && flag->is_ccstr()) { | |
693 if (flag->ccstr_accumulates()) { | |
694 return append_to_string_flag(name, value, origin); | |
695 } else { | |
696 if (value[0] == '\0') { | |
697 value = NULL; | |
698 } | |
699 return set_string_flag(name, value, origin); | |
700 } | |
701 } | |
702 } | |
703 | |
704 if (sscanf(arg, "%" XSTR(BUFLEN) NAME_RANGE ":%c", name, &punct) == 2 && punct == '=') { | |
705 const char* value = strchr(arg, '=') + 1; | |
706 // -XX:Foo:=xxx will reset the string flag to the given value. | |
707 if (value[0] == '\0') { | |
708 value = NULL; | |
709 } | |
710 return set_string_flag(name, value, origin); | |
711 } | |
712 | |
713 #define SIGNED_FP_NUMBER_RANGE "[-0123456789.]" | |
714 #define SIGNED_NUMBER_RANGE "[-0123456789]" | |
715 #define NUMBER_RANGE "[0123456789]" | |
716 char value[BUFLEN + 1]; | |
717 char value2[BUFLEN + 1]; | |
718 if (sscanf(arg, "%" XSTR(BUFLEN) NAME_RANGE "=" "%" XSTR(BUFLEN) SIGNED_NUMBER_RANGE "." "%" XSTR(BUFLEN) NUMBER_RANGE "%c", name, value, value2, &dummy) == 3) { | |
719 // Looks like a floating-point number -- try again with more lenient format string | |
720 if (sscanf(arg, "%" XSTR(BUFLEN) NAME_RANGE "=" "%" XSTR(BUFLEN) SIGNED_FP_NUMBER_RANGE "%c", name, value, &dummy) == 2) { | |
721 return set_fp_numeric_flag(name, value, origin); | |
722 } | |
723 } | |
724 | |
725 #define VALUE_RANGE "[-kmgtKMGT0123456789]" | |
726 if (sscanf(arg, "%" XSTR(BUFLEN) NAME_RANGE "=" "%" XSTR(BUFLEN) VALUE_RANGE "%c", name, value, &dummy) == 2) { | |
727 return set_numeric_flag(name, value, origin); | |
728 } | |
729 | |
730 return false; | |
731 } | |
732 | |
733 void Arguments::add_string(char*** bldarray, int* count, const char* arg) { | |
734 assert(bldarray != NULL, "illegal argument"); | |
735 | |
736 if (arg == NULL) { | |
737 return; | |
738 } | |
739 | |
740 int index = *count; | |
741 | |
742 // expand the array and add arg to the last element | |
743 (*count)++; | |
744 if (*bldarray == NULL) { | |
745 *bldarray = NEW_C_HEAP_ARRAY(char*, *count); | |
746 } else { | |
747 *bldarray = REALLOC_C_HEAP_ARRAY(char*, *bldarray, *count); | |
748 } | |
749 (*bldarray)[index] = strdup(arg); | |
750 } | |
751 | |
752 void Arguments::build_jvm_args(const char* arg) { | |
753 add_string(&_jvm_args_array, &_num_jvm_args, arg); | |
754 } | |
755 | |
756 void Arguments::build_jvm_flags(const char* arg) { | |
757 add_string(&_jvm_flags_array, &_num_jvm_flags, arg); | |
758 } | |
759 | |
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760 void Arguments::add_graal_arg(const char* arg) { |
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761 add_string(&_graal_args_array, &_num_graal_args, arg); |
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762 } |
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763 |
0 | 764 // utility function to return a string that concatenates all |
765 // strings in a given char** array | |
766 const char* Arguments::build_resource_string(char** args, int count) { | |
767 if (args == NULL || count == 0) { | |
768 return NULL; | |
769 } | |
770 size_t length = strlen(args[0]) + 1; // add 1 for the null terminator | |
771 for (int i = 1; i < count; i++) { | |
772 length += strlen(args[i]) + 1; // add 1 for a space | |
773 } | |
774 char* s = NEW_RESOURCE_ARRAY(char, length); | |
775 strcpy(s, args[0]); | |
776 for (int j = 1; j < count; j++) { | |
777 strcat(s, " "); | |
778 strcat(s, args[j]); | |
779 } | |
780 return (const char*) s; | |
781 } | |
782 | |
783 void Arguments::print_on(outputStream* st) { | |
784 st->print_cr("VM Arguments:"); | |
785 if (num_jvm_flags() > 0) { | |
786 st->print("jvm_flags: "); print_jvm_flags_on(st); | |
787 } | |
788 if (num_jvm_args() > 0) { | |
789 st->print("jvm_args: "); print_jvm_args_on(st); | |
790 } | |
791 st->print_cr("java_command: %s", java_command() ? java_command() : "<unknown>"); | |
792 st->print_cr("Launcher Type: %s", _sun_java_launcher); | |
793 } | |
794 | |
795 void Arguments::print_jvm_flags_on(outputStream* st) { | |
796 if (_num_jvm_flags > 0) { | |
797 for (int i=0; i < _num_jvm_flags; i++) { | |
798 st->print("%s ", _jvm_flags_array[i]); | |
799 } | |
800 st->print_cr(""); | |
801 } | |
802 } | |
803 | |
804 void Arguments::print_jvm_args_on(outputStream* st) { | |
805 if (_num_jvm_args > 0) { | |
806 for (int i=0; i < _num_jvm_args; i++) { | |
807 st->print("%s ", _jvm_args_array[i]); | |
808 } | |
809 st->print_cr(""); | |
810 } | |
811 } | |
812 | |
242 | 813 bool Arguments::process_argument(const char* arg, |
814 jboolean ignore_unrecognized, FlagValueOrigin origin) { | |
815 | |
816 JDK_Version since = JDK_Version(); | |
0 | 817 |
3250 | 818 if (parse_argument(arg, origin) || ignore_unrecognized) { |
819 return true; | |
0 | 820 } |
3250 | 821 |
822 const char * const argname = *arg == '+' || *arg == '-' ? arg + 1 : arg; | |
823 if (is_newly_obsolete(arg, &since)) { | |
824 char version[256]; | |
825 since.to_string(version, sizeof(version)); | |
826 warning("ignoring option %s; support was removed in %s", argname, version); | |
827 return true; | |
828 } | |
829 | |
830 jio_fprintf(defaultStream::error_stream(), | |
831 "Unrecognized VM option '%s'\n", argname); | |
832 // allow for commandline "commenting out" options like -XX:#+Verbose | |
833 return arg[0] == '#'; | |
0 | 834 } |
835 | |
836 bool Arguments::process_settings_file(const char* file_name, bool should_exist, jboolean ignore_unrecognized) { | |
837 FILE* stream = fopen(file_name, "rb"); | |
838 if (stream == NULL) { | |
839 if (should_exist) { | |
840 jio_fprintf(defaultStream::error_stream(), | |
841 "Could not open settings file %s\n", file_name); | |
842 return false; | |
843 } else { | |
844 return true; | |
845 } | |
846 } | |
847 | |
848 char token[1024]; | |
849 int pos = 0; | |
850 | |
851 bool in_white_space = true; | |
852 bool in_comment = false; | |
853 bool in_quote = false; | |
854 char quote_c = 0; | |
855 bool result = true; | |
856 | |
857 int c = getc(stream); | |
858 while(c != EOF) { | |
859 if (in_white_space) { | |
860 if (in_comment) { | |
861 if (c == '\n') in_comment = false; | |
862 } else { | |
863 if (c == '#') in_comment = true; | |
864 else if (!isspace(c)) { | |
865 in_white_space = false; | |
866 token[pos++] = c; | |
867 } | |
868 } | |
869 } else { | |
870 if (c == '\n' || (!in_quote && isspace(c))) { | |
871 // token ends at newline, or at unquoted whitespace | |
872 // this allows a way to include spaces in string-valued options | |
873 token[pos] = '\0'; | |
874 logOption(token); | |
875 result &= process_argument(token, ignore_unrecognized, CONFIG_FILE); | |
876 build_jvm_flags(token); | |
877 pos = 0; | |
878 in_white_space = true; | |
879 in_quote = false; | |
880 } else if (!in_quote && (c == '\'' || c == '"')) { | |
881 in_quote = true; | |
882 quote_c = c; | |
883 } else if (in_quote && (c == quote_c)) { | |
884 in_quote = false; | |
885 } else { | |
886 token[pos++] = c; | |
887 } | |
888 } | |
889 c = getc(stream); | |
890 } | |
891 if (pos > 0) { | |
892 token[pos] = '\0'; | |
893 result &= process_argument(token, ignore_unrecognized, CONFIG_FILE); | |
894 build_jvm_flags(token); | |
895 } | |
896 fclose(stream); | |
897 return result; | |
898 } | |
899 | |
900 //============================================================================================================= | |
901 // Parsing of properties (-D) | |
902 | |
903 const char* Arguments::get_property(const char* key) { | |
904 return PropertyList_get_value(system_properties(), key); | |
905 } | |
906 | |
907 bool Arguments::add_property(const char* prop) { | |
908 const char* eq = strchr(prop, '='); | |
909 char* key; | |
910 // ns must be static--its address may be stored in a SystemProperty object. | |
911 const static char ns[1] = {0}; | |
912 char* value = (char *)ns; | |
913 | |
914 size_t key_len = (eq == NULL) ? strlen(prop) : (eq - prop); | |
915 key = AllocateHeap(key_len + 1, "add_property"); | |
916 strncpy(key, prop, key_len); | |
917 key[key_len] = '\0'; | |
918 | |
919 if (eq != NULL) { | |
920 size_t value_len = strlen(prop) - key_len - 1; | |
921 value = AllocateHeap(value_len + 1, "add_property"); | |
922 strncpy(value, &prop[key_len + 1], value_len + 1); | |
923 } | |
924 | |
925 if (strcmp(key, "java.compiler") == 0) { | |
926 process_java_compiler_argument(value); | |
927 FreeHeap(key); | |
928 if (eq != NULL) { | |
929 FreeHeap(value); | |
930 } | |
931 return true; | |
691 | 932 } else if (strcmp(key, "sun.java.command") == 0) { |
0 | 933 _java_command = value; |
934 | |
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935 // Record value in Arguments, but let it get passed to Java. |
691 | 936 } else if (strcmp(key, "sun.java.launcher.pid") == 0) { |
0 | 937 // launcher.pid property is private and is processed |
938 // in process_sun_java_launcher_properties(); | |
939 // the sun.java.launcher property is passed on to the java application | |
940 FreeHeap(key); | |
941 if (eq != NULL) { | |
942 FreeHeap(value); | |
943 } | |
944 return true; | |
691 | 945 } else if (strcmp(key, "java.vendor.url.bug") == 0) { |
0 | 946 // save it in _java_vendor_url_bug, so JVM fatal error handler can access |
947 // its value without going through the property list or making a Java call. | |
948 _java_vendor_url_bug = value; | |
691 | 949 } else if (strcmp(key, "sun.boot.library.path") == 0) { |
950 PropertyList_unique_add(&_system_properties, key, value, true); | |
951 return true; | |
0 | 952 } |
953 // Create new property and add at the end of the list | |
954 PropertyList_unique_add(&_system_properties, key, value); | |
955 return true; | |
956 } | |
957 | |
958 //=========================================================================================================== | |
959 // Setting int/mixed/comp mode flags | |
960 | |
961 void Arguments::set_mode_flags(Mode mode) { | |
962 // Set up default values for all flags. | |
963 // If you add a flag to any of the branches below, | |
964 // add a default value for it here. | |
965 set_java_compiler(false); | |
966 _mode = mode; | |
967 | |
968 // Ensure Agent_OnLoad has the correct initial values. | |
969 // This may not be the final mode; mode may change later in onload phase. | |
970 PropertyList_unique_add(&_system_properties, "java.vm.info", | |
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971 (char*)VM_Version::vm_info_string(), false); |
0 | 972 |
973 UseInterpreter = true; | |
974 UseCompiler = true; | |
975 UseLoopCounter = true; | |
976 | |
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977 #ifndef ZERO |
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978 // Turn these off for mixed and comp. Leave them on for Zero. |
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979 if (FLAG_IS_DEFAULT(UseFastAccessorMethods)) { |
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980 UseFastAccessorMethods = (mode == _int); |
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981 } |
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982 if (FLAG_IS_DEFAULT(UseFastEmptyMethods)) { |
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983 UseFastEmptyMethods = (mode == _int); |
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984 } |
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985 #endif |
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986 |
0 | 987 // Default values may be platform/compiler dependent - |
988 // use the saved values | |
989 ClipInlining = Arguments::_ClipInlining; | |
990 AlwaysCompileLoopMethods = Arguments::_AlwaysCompileLoopMethods; | |
991 UseOnStackReplacement = Arguments::_UseOnStackReplacement; | |
992 BackgroundCompilation = Arguments::_BackgroundCompilation; | |
993 | |
994 // Change from defaults based on mode | |
995 switch (mode) { | |
996 default: | |
997 ShouldNotReachHere(); | |
998 break; | |
999 case _int: | |
1000 UseCompiler = false; | |
1001 UseLoopCounter = false; | |
1002 AlwaysCompileLoopMethods = false; | |
1003 UseOnStackReplacement = false; | |
1004 break; | |
1005 case _mixed: | |
1006 // same as default | |
1007 break; | |
1008 case _comp: | |
1009 UseInterpreter = false; | |
1010 BackgroundCompilation = false; | |
1011 ClipInlining = false; | |
1012 break; | |
1013 } | |
1014 } | |
1015 | |
1016 // Conflict: required to use shared spaces (-Xshare:on), but | |
1017 // incompatible command line options were chosen. | |
1018 | |
1019 static void no_shared_spaces() { | |
1020 if (RequireSharedSpaces) { | |
1021 jio_fprintf(defaultStream::error_stream(), | |
1022 "Class data sharing is inconsistent with other specified options.\n"); | |
1023 vm_exit_during_initialization("Unable to use shared archive.", NULL); | |
1024 } else { | |
1025 FLAG_SET_DEFAULT(UseSharedSpaces, false); | |
1026 } | |
1027 } | |
1028 | |
1783 | 1029 void Arguments::set_tiered_flags() { |
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1030 // With tiered, set default policy to AdvancedThresholdPolicy, which is 3. |
1783 | 1031 if (FLAG_IS_DEFAULT(CompilationPolicyChoice)) { |
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1032 FLAG_SET_DEFAULT(CompilationPolicyChoice, 3); |
1783 | 1033 } |
1034 if (CompilationPolicyChoice < 2) { | |
1035 vm_exit_during_initialization( | |
1036 "Incompatible compilation policy selected", NULL); | |
1037 } | |
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1038 // Increase the code cache size - tiered compiles a lot more. |
1783 | 1039 if (FLAG_IS_DEFAULT(ReservedCodeCacheSize)) { |
1040 FLAG_SET_DEFAULT(ReservedCodeCacheSize, ReservedCodeCacheSize * 2); | |
1041 } | |
1042 } | |
1043 | |
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1044 #ifndef KERNEL |
0 | 1045 // If the user has chosen ParallelGCThreads > 0, we set UseParNewGC |
1046 // if it's not explictly set or unset. If the user has chosen | |
1047 // UseParNewGC and not explicitly set ParallelGCThreads we | |
1048 // set it, unless this is a single cpu machine. | |
1049 void Arguments::set_parnew_gc_flags() { | |
1064 | 1050 assert(!UseSerialGC && !UseParallelOldGC && !UseParallelGC && !UseG1GC, |
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1051 "control point invariant"); |
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1052 assert(UseParNewGC, "Error"); |
0 | 1053 |
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1054 // Turn off AdaptiveSizePolicy by default for parnew until it is |
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1055 // complete. |
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1056 if (FLAG_IS_DEFAULT(UseAdaptiveSizePolicy)) { |
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1057 FLAG_SET_DEFAULT(UseAdaptiveSizePolicy, false); |
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1058 } |
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1059 |
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1060 if (ParallelGCThreads == 0) { |
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1061 FLAG_SET_DEFAULT(ParallelGCThreads, |
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1062 Abstract_VM_Version::parallel_worker_threads()); |
1064 | 1063 if (ParallelGCThreads == 1) { |
0 | 1064 FLAG_SET_DEFAULT(UseParNewGC, false); |
1064 | 1065 FLAG_SET_DEFAULT(ParallelGCThreads, 0); |
0 | 1066 } |
1067 } | |
1064 | 1068 if (UseParNewGC) { |
1069 // CDS doesn't work with ParNew yet | |
0 | 1070 no_shared_spaces(); |
1071 | |
695 | 1072 // By default YoungPLABSize and OldPLABSize are set to 4096 and 1024 respectively, |
0 | 1073 // these settings are default for Parallel Scavenger. For ParNew+Tenured configuration |
1074 // we set them to 1024 and 1024. | |
1075 // See CR 6362902. | |
1076 if (FLAG_IS_DEFAULT(YoungPLABSize)) { | |
1077 FLAG_SET_DEFAULT(YoungPLABSize, (intx)1024); | |
1078 } | |
1079 if (FLAG_IS_DEFAULT(OldPLABSize)) { | |
1080 FLAG_SET_DEFAULT(OldPLABSize, (intx)1024); | |
1081 } | |
1082 | |
1064 | 1083 // AlwaysTenure flag should make ParNew promote all at first collection. |
0 | 1084 // See CR 6362902. |
1085 if (AlwaysTenure) { | |
1086 FLAG_SET_CMDLINE(intx, MaxTenuringThreshold, 0); | |
1087 } | |
695 | 1088 // When using compressed oops, we use local overflow stacks, |
1089 // rather than using a global overflow list chained through | |
1090 // the klass word of the object's pre-image. | |
1091 if (UseCompressedOops && !ParGCUseLocalOverflow) { | |
1092 if (!FLAG_IS_DEFAULT(ParGCUseLocalOverflow)) { | |
1093 warning("Forcing +ParGCUseLocalOverflow: needed if using compressed references"); | |
1094 } | |
1095 FLAG_SET_DEFAULT(ParGCUseLocalOverflow, true); | |
1096 } | |
1097 assert(ParGCUseLocalOverflow || !UseCompressedOops, "Error"); | |
0 | 1098 } |
1099 } | |
1100 | |
1101 // Adjust some sizes to suit CMS and/or ParNew needs; these work well on | |
1102 // sparc/solaris for certain applications, but would gain from | |
1103 // further optimization and tuning efforts, and would almost | |
1104 // certainly gain from analysis of platform and environment. | |
1105 void Arguments::set_cms_and_parnew_gc_flags() { | |
1064 | 1106 assert(!UseSerialGC && !UseParallelOldGC && !UseParallelGC, "Error"); |
10
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1107 assert(UseConcMarkSweepGC, "CMS is expected to be on here"); |
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1108 |
0 | 1109 // If we are using CMS, we prefer to UseParNewGC, |
1110 // unless explicitly forbidden. | |
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1111 if (FLAG_IS_DEFAULT(UseParNewGC)) { |
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1112 FLAG_SET_ERGO(bool, UseParNewGC, true); |
0 | 1113 } |
1114 | |
1115 // Turn off AdaptiveSizePolicy by default for cms until it is | |
10
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1116 // complete. |
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1117 if (FLAG_IS_DEFAULT(UseAdaptiveSizePolicy)) { |
0 | 1118 FLAG_SET_DEFAULT(UseAdaptiveSizePolicy, false); |
1119 } | |
1120 | |
1121 // In either case, adjust ParallelGCThreads and/or UseParNewGC | |
1122 // as needed. | |
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1123 if (UseParNewGC) { |
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1124 set_parnew_gc_flags(); |
0 | 1125 } |
1126 | |
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1127 // MaxHeapSize is aligned down in collectorPolicy |
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1128 size_t max_heap = align_size_down(MaxHeapSize, |
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1129 CardTableRS::ct_max_alignment_constraint()); |
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1130 |
0 | 1131 // Now make adjustments for CMS |
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1132 intx tenuring_default = (intx)6; |
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1133 size_t young_gen_per_worker = CMSYoungGenPerWorker; |
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1134 |
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1135 // Preferred young gen size for "short" pauses: |
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1136 // upper bound depends on # of threads and NewRatio. |
0 | 1137 const uintx parallel_gc_threads = |
1138 (ParallelGCThreads == 0 ? 1 : ParallelGCThreads); | |
1139 const size_t preferred_max_new_size_unaligned = | |
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1140 MIN2(max_heap/(NewRatio+1), ScaleForWordSize(young_gen_per_worker * parallel_gc_threads)); |
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1141 size_t preferred_max_new_size = |
0 | 1142 align_size_up(preferred_max_new_size_unaligned, os::vm_page_size()); |
1143 | |
1144 // Unless explicitly requested otherwise, size young gen | |
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1145 // for "short" pauses ~ CMSYoungGenPerWorker*ParallelGCThreads |
886
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1146 |
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1147 // If either MaxNewSize or NewRatio is set on the command line, |
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1148 // assume the user is trying to set the size of the young gen. |
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1149 if (FLAG_IS_DEFAULT(MaxNewSize) && FLAG_IS_DEFAULT(NewRatio)) { |
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1150 |
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1151 // Set MaxNewSize to our calculated preferred_max_new_size unless |
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1152 // NewSize was set on the command line and it is larger than |
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1153 // preferred_max_new_size. |
0 | 1154 if (!FLAG_IS_DEFAULT(NewSize)) { // NewSize explicitly set at command-line |
13
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1155 FLAG_SET_ERGO(uintx, MaxNewSize, MAX2(NewSize, preferred_max_new_size)); |
0 | 1156 } else { |
13
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1157 FLAG_SET_ERGO(uintx, MaxNewSize, preferred_max_new_size); |
0 | 1158 } |
1064 | 1159 if (PrintGCDetails && Verbose) { |
13
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1160 // Too early to use gclog_or_tty |
2368
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1161 tty->print_cr("CMS ergo set MaxNewSize: " SIZE_FORMAT, MaxNewSize); |
886
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1162 } |
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1163 |
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1164 // Code along this path potentially sets NewSize and OldSize |
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1165 |
2368
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1166 assert(max_heap >= InitialHeapSize, "Error"); |
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1167 assert(max_heap >= NewSize, "Error"); |
0 | 1168 |
1064 | 1169 if (PrintGCDetails && Verbose) { |
13
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1170 // Too early to use gclog_or_tty |
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1171 tty->print_cr("CMS set min_heap_size: " SIZE_FORMAT |
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1172 " initial_heap_size: " SIZE_FORMAT |
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1173 " max_heap: " SIZE_FORMAT, |
1064 | 1174 min_heap_size(), InitialHeapSize, max_heap); |
13
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1175 } |
2368
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1176 size_t min_new = preferred_max_new_size; |
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1177 if (FLAG_IS_CMDLINE(NewSize)) { |
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1178 min_new = NewSize; |
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1179 } |
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1180 if (max_heap > min_new && min_heap_size() > min_new) { |
0 | 1181 // Unless explicitly requested otherwise, make young gen |
1182 // at least min_new, and at most preferred_max_new_size. | |
1183 if (FLAG_IS_DEFAULT(NewSize)) { | |
13
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1184 FLAG_SET_ERGO(uintx, NewSize, MAX2(NewSize, min_new)); |
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1185 FLAG_SET_ERGO(uintx, NewSize, MIN2(preferred_max_new_size, NewSize)); |
1064 | 1186 if (PrintGCDetails && Verbose) { |
13
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1187 // Too early to use gclog_or_tty |
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1188 tty->print_cr("CMS ergo set NewSize: " SIZE_FORMAT, NewSize); |
13
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1189 } |
0 | 1190 } |
1191 // Unless explicitly requested otherwise, size old gen | |
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1192 // so it's NewRatio x of NewSize. |
0 | 1193 if (FLAG_IS_DEFAULT(OldSize)) { |
1194 if (max_heap > NewSize) { | |
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1195 FLAG_SET_ERGO(uintx, OldSize, MIN2(NewRatio*NewSize, max_heap - NewSize)); |
1064 | 1196 if (PrintGCDetails && Verbose) { |
13
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1197 // Too early to use gclog_or_tty |
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1198 tty->print_cr("CMS ergo set OldSize: " SIZE_FORMAT, OldSize); |
13
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1199 } |
0 | 1200 } |
1201 } | |
1202 } | |
1203 } | |
1204 // Unless explicitly requested otherwise, definitely | |
1205 // promote all objects surviving "tenuring_default" scavenges. | |
1206 if (FLAG_IS_DEFAULT(MaxTenuringThreshold) && | |
1207 FLAG_IS_DEFAULT(SurvivorRatio)) { | |
13
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1208 FLAG_SET_ERGO(intx, MaxTenuringThreshold, tenuring_default); |
0 | 1209 } |
1210 // If we decided above (or user explicitly requested) | |
1211 // `promote all' (via MaxTenuringThreshold := 0), | |
1212 // prefer minuscule survivor spaces so as not to waste | |
1213 // space for (non-existent) survivors | |
1214 if (FLAG_IS_DEFAULT(SurvivorRatio) && MaxTenuringThreshold == 0) { | |
13
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1215 FLAG_SET_ERGO(intx, SurvivorRatio, MAX2((intx)1024, SurvivorRatio)); |
0 | 1216 } |
1217 // If OldPLABSize is set and CMSParPromoteBlocksToClaim is not, | |
1218 // set CMSParPromoteBlocksToClaim equal to OldPLABSize. | |
1219 // This is done in order to make ParNew+CMS configuration to work | |
1220 // with YoungPLABSize and OldPLABSize options. | |
1221 // See CR 6362902. | |
1222 if (!FLAG_IS_DEFAULT(OldPLABSize)) { | |
1223 if (FLAG_IS_DEFAULT(CMSParPromoteBlocksToClaim)) { | |
13
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1224 // OldPLABSize is not the default value but CMSParPromoteBlocksToClaim |
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1225 // is. In this situtation let CMSParPromoteBlocksToClaim follow |
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1226 // the value (either from the command line or ergonomics) of |
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1227 // OldPLABSize. Following OldPLABSize is an ergonomics decision. |
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1228 FLAG_SET_ERGO(uintx, CMSParPromoteBlocksToClaim, OldPLABSize); |
1145
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1229 } else { |
0 | 1230 // OldPLABSize and CMSParPromoteBlocksToClaim are both set. |
1231 // CMSParPromoteBlocksToClaim is a collector-specific flag, so | |
1232 // we'll let it to take precedence. | |
1233 jio_fprintf(defaultStream::error_stream(), | |
886
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1234 "Both OldPLABSize and CMSParPromoteBlocksToClaim" |
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1235 " options are specified for the CMS collector." |
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1236 " CMSParPromoteBlocksToClaim will take precedence.\n"); |
0 | 1237 } |
1238 } | |
1145
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1239 if (!FLAG_IS_DEFAULT(ResizeOldPLAB) && !ResizeOldPLAB) { |
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1240 // OldPLAB sizing manually turned off: Use a larger default setting, |
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1241 // unless it was manually specified. This is because a too-low value |
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1242 // will slow down scavenges. |
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1243 if (FLAG_IS_DEFAULT(CMSParPromoteBlocksToClaim)) { |
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1244 FLAG_SET_ERGO(uintx, CMSParPromoteBlocksToClaim, 50); // default value before 6631166 |
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1245 } |
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1246 } |
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1247 // Overwrite OldPLABSize which is the variable we will internally use everywhere. |
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1248 FLAG_SET_ERGO(uintx, OldPLABSize, CMSParPromoteBlocksToClaim); |
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1249 // If either of the static initialization defaults have changed, note this |
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1250 // modification. |
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1251 if (!FLAG_IS_DEFAULT(CMSParPromoteBlocksToClaim) || !FLAG_IS_DEFAULT(OldPLABWeight)) { |
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1252 CFLS_LAB::modify_initialization(OldPLABSize, OldPLABWeight); |
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1253 } |
1284 | 1254 if (PrintGCDetails && Verbose) { |
1255 tty->print_cr("MarkStackSize: %uk MarkStackSizeMax: %uk", | |
1256 MarkStackSize / K, MarkStackSizeMax / K); | |
1257 tty->print_cr("ConcGCThreads: %u", ConcGCThreads); | |
1258 } | |
0 | 1259 } |
1145
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1260 #endif // KERNEL |
0 | 1261 |
1571
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1262 void set_object_alignment() { |
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1263 // Object alignment. |
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1264 assert(is_power_of_2(ObjectAlignmentInBytes), "ObjectAlignmentInBytes must be power of 2"); |
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1265 MinObjAlignmentInBytes = ObjectAlignmentInBytes; |
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1266 assert(MinObjAlignmentInBytes >= HeapWordsPerLong * HeapWordSize, "ObjectAlignmentInBytes value is too small"); |
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1267 MinObjAlignment = MinObjAlignmentInBytes / HeapWordSize; |
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1268 assert(MinObjAlignmentInBytes == MinObjAlignment * HeapWordSize, "ObjectAlignmentInBytes value is incorrect"); |
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1269 MinObjAlignmentInBytesMask = MinObjAlignmentInBytes - 1; |
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1270 |
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1271 LogMinObjAlignmentInBytes = exact_log2(ObjectAlignmentInBytes); |
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1272 LogMinObjAlignment = LogMinObjAlignmentInBytes - LogHeapWordSize; |
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1273 |
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1274 // Oop encoding heap max |
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1275 OopEncodingHeapMax = (uint64_t(max_juint) + 1) << LogMinObjAlignmentInBytes; |
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1276 |
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1277 #ifndef KERNEL |
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1278 // Set CMS global values |
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1279 CompactibleFreeListSpace::set_cms_values(); |
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1280 #endif // KERNEL |
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1281 } |
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1282 |
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1283 bool verify_object_alignment() { |
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1284 // Object alignment. |
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1285 if (!is_power_of_2(ObjectAlignmentInBytes)) { |
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1286 jio_fprintf(defaultStream::error_stream(), |
1829
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1287 "error: ObjectAlignmentInBytes=%d must be power of 2\n", |
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1288 (int)ObjectAlignmentInBytes); |
1571
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1289 return false; |
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1290 } |
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1291 if ((int)ObjectAlignmentInBytes < BytesPerLong) { |
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1292 jio_fprintf(defaultStream::error_stream(), |
1829
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1293 "error: ObjectAlignmentInBytes=%d must be greater or equal %d\n", |
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1294 (int)ObjectAlignmentInBytes, BytesPerLong); |
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1295 return false; |
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1296 } |
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1297 // It does not make sense to have big object alignment |
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1298 // since a space lost due to alignment will be greater |
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1299 // then a saved space from compressed oops. |
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1300 if ((int)ObjectAlignmentInBytes > 256) { |
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1301 jio_fprintf(defaultStream::error_stream(), |
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1302 "error: ObjectAlignmentInBytes=%d must not be greater then 256\n", |
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1303 (int)ObjectAlignmentInBytes); |
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1304 return false; |
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1305 } |
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1306 // In case page size is very small. |
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1307 if ((int)ObjectAlignmentInBytes >= os::vm_page_size()) { |
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1308 jio_fprintf(defaultStream::error_stream(), |
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1309 "error: ObjectAlignmentInBytes=%d must be less then page size %d\n", |
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1310 (int)ObjectAlignmentInBytes, os::vm_page_size()); |
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1311 return false; |
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1312 } |
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1313 return true; |
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1314 } |
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1315 |
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1316 inline uintx max_heap_for_compressed_oops() { |
1963 | 1317 // Avoid sign flip. |
1318 if (OopEncodingHeapMax < MaxPermSize + os::vm_page_size()) { | |
1319 return 0; | |
1320 } | |
1321 LP64_ONLY(return OopEncodingHeapMax - MaxPermSize - os::vm_page_size()); | |
1064 | 1322 NOT_LP64(ShouldNotReachHere(); return 0); |
135
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1323 } |
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1324 |
0 | 1325 bool Arguments::should_auto_select_low_pause_collector() { |
1326 if (UseAutoGCSelectPolicy && | |
1327 !FLAG_IS_DEFAULT(MaxGCPauseMillis) && | |
1328 (MaxGCPauseMillis <= AutoGCSelectPauseMillis)) { | |
1329 if (PrintGCDetails) { | |
1330 // Cannot use gclog_or_tty yet. | |
1331 tty->print_cr("Automatic selection of the low pause collector" | |
1332 " based on pause goal of %d (ms)", MaxGCPauseMillis); | |
1333 } | |
1334 return true; | |
1335 } | |
1336 return false; | |
1337 } | |
1338 | |
1339 void Arguments::set_ergonomics_flags() { | |
1340 // Parallel GC is not compatible with sharing. If one specifies | |
1064 | 1341 // that they want sharing explicitly, do not set ergonomics flags. |
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1342 if (DumpSharedSpaces || RequireSharedSpaces) { |
0 | 1343 return; |
1344 } | |
1345 | |
1346 if (os::is_server_class_machine() && !force_client_mode ) { | |
1347 // If no other collector is requested explicitly, | |
1348 // let the VM select the collector based on | |
1349 // machine class and automatic selection policy. | |
1350 if (!UseSerialGC && | |
1351 !UseConcMarkSweepGC && | |
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1352 !UseG1GC && |
0 | 1353 !UseParNewGC && |
1354 !DumpSharedSpaces && | |
1355 FLAG_IS_DEFAULT(UseParallelGC)) { | |
1356 if (should_auto_select_low_pause_collector()) { | |
1357 FLAG_SET_ERGO(bool, UseConcMarkSweepGC, true); | |
1358 } else { | |
1359 FLAG_SET_ERGO(bool, UseParallelGC, true); | |
1360 } | |
1361 no_shared_spaces(); | |
1362 } | |
1363 } | |
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1364 |
1010 | 1365 #ifndef ZERO |
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1366 #ifdef _LP64 |
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1367 // Check that UseCompressedOops can be set with the max heap size allocated |
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1368 // by ergonomics. |
187 | 1369 if (MaxHeapSize <= max_heap_for_compressed_oops()) { |
1783 | 1370 #if !defined(COMPILER1) || defined(TIERED) |
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1371 // disable UseCompressedOops by default on MacOS X until 7118647 is fixed |
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1372 #ifndef __APPLE__ |
2228 | 1373 if (FLAG_IS_DEFAULT(UseCompressedOops)) { |
932 | 1374 FLAG_SET_ERGO(bool, UseCompressedOops, true); |
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1375 } |
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1376 #endif // !__APPLE__ |
1060 | 1377 #endif |
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1378 #ifdef _WIN64 |
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1379 if (UseLargePages && UseCompressedOops) { |
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1380 // Cannot allocate guard pages for implicit checks in indexed addressing |
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1381 // mode, when large pages are specified on windows. |
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1382 // This flag could be switched ON if narrow oop base address is set to 0, |
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1383 // see code in Universe::initialize_heap(). |
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1384 Universe::set_narrow_oop_use_implicit_null_checks(false); |
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1385 } |
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1386 #endif // _WIN64 |
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1387 } else { |
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1388 if (UseCompressedOops && !FLAG_IS_DEFAULT(UseCompressedOops)) { |
344 | 1389 warning("Max heap size too large for Compressed Oops"); |
113
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1390 FLAG_SET_DEFAULT(UseCompressedOops, false); |
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1391 } |
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1392 } |
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1393 // Also checks that certain machines are slower with compressed oops |
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1394 // in vm_version initialization code. |
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1395 #endif // _LP64 |
1010 | 1396 #endif // !ZERO |
0 | 1397 } |
1398 | |
1399 void Arguments::set_parallel_gc_flags() { | |
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1400 assert(UseParallelGC || UseParallelOldGC, "Error"); |
0 | 1401 // If parallel old was requested, automatically enable parallel scavenge. |
1402 if (UseParallelOldGC && !UseParallelGC && FLAG_IS_DEFAULT(UseParallelGC)) { | |
1403 FLAG_SET_DEFAULT(UseParallelGC, true); | |
1404 } | |
1405 | |
1406 // If no heap maximum was requested explicitly, use some reasonable fraction | |
1407 // of the physical memory, up to a maximum of 1GB. | |
1408 if (UseParallelGC) { | |
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1409 FLAG_SET_DEFAULT(ParallelGCThreads, |
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1410 Abstract_VM_Version::parallel_worker_threads()); |
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1411 |
0 | 1412 // If InitialSurvivorRatio or MinSurvivorRatio were not specified, but the |
1413 // SurvivorRatio has been set, reset their default values to SurvivorRatio + | |
1414 // 2. By doing this we make SurvivorRatio also work for Parallel Scavenger. | |
1415 // See CR 6362902 for details. | |
1416 if (!FLAG_IS_DEFAULT(SurvivorRatio)) { | |
1417 if (FLAG_IS_DEFAULT(InitialSurvivorRatio)) { | |
1418 FLAG_SET_DEFAULT(InitialSurvivorRatio, SurvivorRatio + 2); | |
1419 } | |
1420 if (FLAG_IS_DEFAULT(MinSurvivorRatio)) { | |
1421 FLAG_SET_DEFAULT(MinSurvivorRatio, SurvivorRatio + 2); | |
1422 } | |
1423 } | |
1424 | |
1425 if (UseParallelOldGC) { | |
1426 // Par compact uses lower default values since they are treated as | |
13
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1427 // minimums. These are different defaults because of the different |
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1428 // interpretation and are not ergonomically set. |
0 | 1429 if (FLAG_IS_DEFAULT(MarkSweepDeadRatio)) { |
13
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1430 FLAG_SET_DEFAULT(MarkSweepDeadRatio, 1); |
0 | 1431 } |
1432 if (FLAG_IS_DEFAULT(PermMarkSweepDeadRatio)) { | |
13
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1433 FLAG_SET_DEFAULT(PermMarkSweepDeadRatio, 5); |
0 | 1434 } |
1435 } | |
1436 } | |
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1437 if (UseNUMA) { |
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1438 if (FLAG_IS_DEFAULT(MinHeapDeltaBytes)) { |
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1439 FLAG_SET_DEFAULT(MinHeapDeltaBytes, 64*M); |
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1440 } |
3885 | 1441 // For those collectors or operating systems (eg, Windows) that do |
1442 // not support full UseNUMA, we will map to UseNUMAInterleaving for now | |
1443 UseNUMAInterleaving = true; | |
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1444 } |
0 | 1445 } |
1446 | |
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1447 void Arguments::set_g1_gc_flags() { |
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1448 assert(UseG1GC, "Error"); |
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1449 #ifdef COMPILER1 |
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1450 FastTLABRefill = false; |
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1451 #endif |
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1452 FLAG_SET_DEFAULT(ParallelGCThreads, |
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1453 Abstract_VM_Version::parallel_worker_threads()); |
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1454 if (ParallelGCThreads == 0) { |
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1455 FLAG_SET_DEFAULT(ParallelGCThreads, |
751 | 1456 Abstract_VM_Version::parallel_worker_threads()); |
342
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1457 } |
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1458 no_shared_spaces(); |
751 | 1459 |
1284 | 1460 if (FLAG_IS_DEFAULT(MarkStackSize)) { |
1311
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1461 FLAG_SET_DEFAULT(MarkStackSize, 128 * TASKQUEUE_SIZE); |
1284 | 1462 } |
1463 if (PrintGCDetails && Verbose) { | |
1464 tty->print_cr("MarkStackSize: %uk MarkStackSizeMax: %uk", | |
1465 MarkStackSize / K, MarkStackSizeMax / K); | |
1466 tty->print_cr("ConcGCThreads: %u", ConcGCThreads); | |
1467 } | |
1356 | 1468 |
1469 if (FLAG_IS_DEFAULT(GCTimeRatio) || GCTimeRatio == 0) { | |
1470 // In G1, we want the default GC overhead goal to be higher than | |
1471 // say in PS. So we set it here to 10%. Otherwise the heap might | |
1472 // be expanded more aggressively than we would like it to. In | |
1473 // fact, even 10% seems to not be high enough in some cases | |
1474 // (especially small GC stress tests that the main thing they do | |
1475 // is allocation). We might consider increase it further. | |
1476 FLAG_SET_DEFAULT(GCTimeRatio, 9); | |
1477 } | |
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1478 } |
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1479 |
1064 | 1480 void Arguments::set_heap_size() { |
1481 if (!FLAG_IS_DEFAULT(DefaultMaxRAMFraction)) { | |
1482 // Deprecated flag | |
1483 FLAG_SET_CMDLINE(uintx, MaxRAMFraction, DefaultMaxRAMFraction); | |
1484 } | |
1485 | |
1486 const julong phys_mem = | |
1487 FLAG_IS_DEFAULT(MaxRAM) ? MIN2(os::physical_memory(), (julong)MaxRAM) | |
1488 : (julong)MaxRAM; | |
1489 | |
1490 // If the maximum heap size has not been set with -Xmx, | |
1491 // then set it as fraction of the size of physical memory, | |
1492 // respecting the maximum and minimum sizes of the heap. | |
342
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1493 if (FLAG_IS_DEFAULT(MaxHeapSize)) { |
1064 | 1494 julong reasonable_max = phys_mem / MaxRAMFraction; |
1495 | |
1496 if (phys_mem <= MaxHeapSize * MinRAMFraction) { | |
1497 // Small physical memory, so use a minimum fraction of it for the heap | |
1498 reasonable_max = phys_mem / MinRAMFraction; | |
1499 } else { | |
1500 // Not-small physical memory, so require a heap at least | |
1501 // as large as MaxHeapSize | |
1502 reasonable_max = MAX2(reasonable_max, (julong)MaxHeapSize); | |
1503 } | |
1504 if (!FLAG_IS_DEFAULT(ErgoHeapSizeLimit) && ErgoHeapSizeLimit != 0) { | |
1505 // Limit the heap size to ErgoHeapSizeLimit | |
1506 reasonable_max = MIN2(reasonable_max, (julong)ErgoHeapSizeLimit); | |
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1507 } |
1064 | 1508 if (UseCompressedOops) { |
1509 // Limit the heap size to the maximum possible when using compressed oops | |
1963 | 1510 julong max_coop_heap = (julong)max_heap_for_compressed_oops(); |
1511 if (HeapBaseMinAddress + MaxHeapSize < max_coop_heap) { | |
1512 // Heap should be above HeapBaseMinAddress to get zero based compressed oops | |
1513 // but it should be not less than default MaxHeapSize. | |
1514 max_coop_heap -= HeapBaseMinAddress; | |
1515 } | |
1516 reasonable_max = MIN2(reasonable_max, max_coop_heap); | |
1064 | 1517 } |
1518 reasonable_max = os::allocatable_physical_memory(reasonable_max); | |
1519 | |
1520 if (!FLAG_IS_DEFAULT(InitialHeapSize)) { | |
1521 // An initial heap size was specified on the command line, | |
1522 // so be sure that the maximum size is consistent. Done | |
1523 // after call to allocatable_physical_memory because that | |
1524 // method might reduce the allocation size. | |
1525 reasonable_max = MAX2(reasonable_max, (julong)InitialHeapSize); | |
1526 } | |
1527 | |
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1528 if (PrintGCDetails && Verbose) { |
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1529 // Cannot use gclog_or_tty yet. |
1064 | 1530 tty->print_cr(" Maximum heap size " SIZE_FORMAT, reasonable_max); |
342
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1531 } |
1064 | 1532 FLAG_SET_ERGO(uintx, MaxHeapSize, (uintx)reasonable_max); |
1533 } | |
1534 | |
1535 // If the initial_heap_size has not been set with InitialHeapSize | |
1536 // or -Xms, then set it as fraction of the size of physical memory, | |
1537 // respecting the maximum and minimum sizes of the heap. | |
1538 if (FLAG_IS_DEFAULT(InitialHeapSize)) { | |
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1539 julong reasonable_minimum = (julong)(OldSize + NewSize); |
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1540 |
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1541 reasonable_minimum = MIN2(reasonable_minimum, (julong)MaxHeapSize); |
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1542 |
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1543 reasonable_minimum = os::allocatable_physical_memory(reasonable_minimum); |
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1544 |
1064 | 1545 julong reasonable_initial = phys_mem / InitialRAMFraction; |
1546 | |
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1547 reasonable_initial = MAX2(reasonable_initial, reasonable_minimum); |
1064 | 1548 reasonable_initial = MIN2(reasonable_initial, (julong)MaxHeapSize); |
1549 | |
1550 reasonable_initial = os::allocatable_physical_memory(reasonable_initial); | |
1551 | |
1552 if (PrintGCDetails && Verbose) { | |
1553 // Cannot use gclog_or_tty yet. | |
1554 tty->print_cr(" Initial heap size " SIZE_FORMAT, (uintx)reasonable_initial); | |
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1555 tty->print_cr(" Minimum heap size " SIZE_FORMAT, (uintx)reasonable_minimum); |
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1556 } |
1064 | 1557 FLAG_SET_ERGO(uintx, InitialHeapSize, (uintx)reasonable_initial); |
1074
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6900899: vm fails to start when -Xmx value is less than OldSize + NewSize
phh
parents:
1069
diff
changeset
|
1558 set_min_heap_size((uintx)reasonable_minimum); |
342
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
135
diff
changeset
|
1559 } |
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
135
diff
changeset
|
1560 } |
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
135
diff
changeset
|
1561 |
0 | 1562 // This must be called after ergonomics because we want bytecode rewriting |
1563 // if the server compiler is used, or if UseSharedSpaces is disabled. | |
1564 void Arguments::set_bytecode_flags() { | |
1565 // Better not attempt to store into a read-only space. | |
1566 if (UseSharedSpaces) { | |
1567 FLAG_SET_DEFAULT(RewriteBytecodes, false); | |
1568 FLAG_SET_DEFAULT(RewriteFrequentPairs, false); | |
1569 } | |
1570 | |
1571 if (!RewriteBytecodes) { | |
1572 FLAG_SET_DEFAULT(RewriteFrequentPairs, false); | |
1573 } | |
1574 } | |
1575 | |
1576 // Aggressive optimization flags -XX:+AggressiveOpts | |
1577 void Arguments::set_aggressive_opts_flags() { | |
17
ff5961f4c095
6395208: Elide autoboxing for calls to HashMap.get(int) and HashMap.get(long)
never
parents:
0
diff
changeset
|
1578 #ifdef COMPILER2 |
ff5961f4c095
6395208: Elide autoboxing for calls to HashMap.get(int) and HashMap.get(long)
never
parents:
0
diff
changeset
|
1579 if (AggressiveOpts || !FLAG_IS_DEFAULT(AutoBoxCacheMax)) { |
ff5961f4c095
6395208: Elide autoboxing for calls to HashMap.get(int) and HashMap.get(long)
never
parents:
0
diff
changeset
|
1580 if (FLAG_IS_DEFAULT(EliminateAutoBox)) { |
ff5961f4c095
6395208: Elide autoboxing for calls to HashMap.get(int) and HashMap.get(long)
never
parents:
0
diff
changeset
|
1581 FLAG_SET_DEFAULT(EliminateAutoBox, true); |
ff5961f4c095
6395208: Elide autoboxing for calls to HashMap.get(int) and HashMap.get(long)
never
parents:
0
diff
changeset
|
1582 } |
ff5961f4c095
6395208: Elide autoboxing for calls to HashMap.get(int) and HashMap.get(long)
never
parents:
0
diff
changeset
|
1583 if (FLAG_IS_DEFAULT(AutoBoxCacheMax)) { |
ff5961f4c095
6395208: Elide autoboxing for calls to HashMap.get(int) and HashMap.get(long)
never
parents:
0
diff
changeset
|
1584 FLAG_SET_DEFAULT(AutoBoxCacheMax, 20000); |
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 |
ff5961f4c095
6395208: Elide autoboxing for calls to HashMap.get(int) and HashMap.get(long)
never
parents:
0
diff
changeset
|
1587 // 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
|
1588 char buffer[1024]; |
513
2328d1d3f8cf
6781583: Hotspot build fails on linux 64 bit platform with gcc 4.3.2
xlu
parents:
489
diff
changeset
|
1589 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
|
1590 add_property(buffer); |
ff5961f4c095
6395208: Elide autoboxing for calls to HashMap.get(int) and HashMap.get(long)
never
parents:
0
diff
changeset
|
1591 } |
416
b6cfd754403d
6649622: HotSpot Biased locking needs tuning on latest CPUs
never
parents:
363
diff
changeset
|
1592 if (AggressiveOpts && FLAG_IS_DEFAULT(BiasedLockingStartupDelay)) { |
b6cfd754403d
6649622: HotSpot Biased locking needs tuning on latest CPUs
never
parents:
363
diff
changeset
|
1593 FLAG_SET_DEFAULT(BiasedLockingStartupDelay, 500); |
b6cfd754403d
6649622: HotSpot Biased locking needs tuning on latest CPUs
never
parents:
363
diff
changeset
|
1594 } |
17
ff5961f4c095
6395208: Elide autoboxing for calls to HashMap.get(int) and HashMap.get(long)
never
parents:
0
diff
changeset
|
1595 #endif |
ff5961f4c095
6395208: Elide autoboxing for calls to HashMap.get(int) and HashMap.get(long)
never
parents:
0
diff
changeset
|
1596 |
0 | 1597 if (AggressiveOpts) { |
61 | 1598 // Sample flag setting code |
1599 // if (FLAG_IS_DEFAULT(EliminateZeroing)) { | |
1600 // FLAG_SET_DEFAULT(EliminateZeroing, true); | |
1601 // } | |
0 | 1602 } |
1603 } | |
1604 | |
1605 //=========================================================================================================== | |
1606 // Parsing of java.compiler property | |
1607 | |
1608 void Arguments::process_java_compiler_argument(char* arg) { | |
1609 // For backwards compatibility, Djava.compiler=NONE or "" | |
1610 // causes us to switch to -Xint mode UNLESS -Xdebug | |
1611 // is also specified. | |
1612 if (strlen(arg) == 0 || strcasecmp(arg, "NONE") == 0) { | |
1613 set_java_compiler(true); // "-Djava.compiler[=...]" most recently seen. | |
1614 } | |
1615 } | |
1616 | |
1617 void Arguments::process_java_launcher_argument(const char* launcher, void* extra_info) { | |
1618 _sun_java_launcher = strdup(launcher); | |
2302
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
1619 if (strcmp("gamma", _sun_java_launcher) == 0) { |
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
1620 _created_by_gamma_launcher = true; |
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
1621 } |
0 | 1622 } |
1623 | |
1624 bool Arguments::created_by_java_launcher() { | |
1625 assert(_sun_java_launcher != NULL, "property must have value"); | |
1626 return strcmp(DEFAULT_JAVA_LAUNCHER, _sun_java_launcher) != 0; | |
1627 } | |
1628 | |
2302
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
1629 bool Arguments::created_by_gamma_launcher() { |
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
1630 return _created_by_gamma_launcher; |
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
1631 } |
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
1632 |
0 | 1633 //=========================================================================================================== |
1634 // Parsing of main arguments | |
1635 | |
1244
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
1636 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
|
1637 uintx max, const char* name) { |
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
1638 // 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
|
1639 // false, otherwise. |
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
1640 if (val >= min && val <= max) { |
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
1641 return true; |
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
1642 } |
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
1643 jio_fprintf(defaultStream::error_stream(), |
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
1644 "%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
|
1645 " and " UINTX_FORMAT "\n", |
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
1646 name, val, min, max); |
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
1647 return false; |
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
1648 } |
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
1649 |
1744
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
ptisnovs
parents:
1681
diff
changeset
|
1650 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
|
1651 // 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
|
1652 // false, otherwise. |
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
ptisnovs
parents:
1681
diff
changeset
|
1653 if (val >= min ) { |
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
ptisnovs
parents:
1681
diff
changeset
|
1654 return true; |
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
ptisnovs
parents:
1681
diff
changeset
|
1655 } |
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
ptisnovs
parents:
1681
diff
changeset
|
1656 jio_fprintf(defaultStream::error_stream(), |
2366
1fb790245268
6820066: Check that -XX:ParGCArrayScanChunk has a value larger than zero.
jwilhelm
parents:
2362
diff
changeset
|
1657 "%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
|
1658 name, val, min); |
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
ptisnovs
parents:
1681
diff
changeset
|
1659 return false; |
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
ptisnovs
parents:
1681
diff
changeset
|
1660 } |
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
ptisnovs
parents:
1681
diff
changeset
|
1661 |
0 | 1662 bool Arguments::verify_percentage(uintx value, const char* name) { |
1663 if (value <= 100) { | |
1664 return true; | |
1665 } | |
1666 jio_fprintf(defaultStream::error_stream(), | |
1667 "%s of " UINTX_FORMAT " is invalid; must be between 0 and 100\n", | |
1668 name, value); | |
1669 return false; | |
1670 } | |
1671 | |
1064 | 1672 static void force_serial_gc() { |
0 | 1673 FLAG_SET_DEFAULT(UseSerialGC, true); |
1674 FLAG_SET_DEFAULT(UseParNewGC, false); | |
1675 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
|
1676 FLAG_SET_DEFAULT(CMSIncrementalMode, false); // special CMS suboption |
0 | 1677 FLAG_SET_DEFAULT(UseParallelGC, false); |
1678 FLAG_SET_DEFAULT(UseParallelOldGC, false); | |
342
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
135
diff
changeset
|
1679 FLAG_SET_DEFAULT(UseG1GC, false); |
0 | 1680 } |
1681 | |
1682 static bool verify_serial_gc_flags() { | |
1683 return (UseSerialGC && | |
945
68ef3fdcdb76
6872136: CMS: confusing message may be printed when a collector is switched off implicitly
ysr
parents:
932
diff
changeset
|
1684 !(UseParNewGC || (UseConcMarkSweepGC || CMSIncrementalMode) || UseG1GC || |
342
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
135
diff
changeset
|
1685 UseParallelGC || UseParallelOldGC)); |
0 | 1686 } |
1687 | |
3767
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3349
diff
changeset
|
1688 // check if do gclog rotation |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3349
diff
changeset
|
1689 // +UseGCLogFileRotation is a must, |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3349
diff
changeset
|
1690 // 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
|
1691 // 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
|
1692 void check_gclog_consistency() { |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3349
diff
changeset
|
1693 if (UseGCLogFileRotation) { |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3349
diff
changeset
|
1694 if ((Arguments::gc_log_filename() == NULL) || |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3349
diff
changeset
|
1695 (NumberOfGCLogFiles == 0) || |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3349
diff
changeset
|
1696 (GCLogFileSize == 0)) { |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3349
diff
changeset
|
1697 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
|
1698 "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
|
1699 "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
|
1700 "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
|
1701 UseGCLogFileRotation = false; |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3349
diff
changeset
|
1702 } |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3349
diff
changeset
|
1703 } |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3349
diff
changeset
|
1704 |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3349
diff
changeset
|
1705 if (UseGCLogFileRotation && GCLogFileSize < 8*K) { |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3349
diff
changeset
|
1706 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
|
1707 jio_fprintf(defaultStream::output_stream(), |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3349
diff
changeset
|
1708 "GCLogFileSize changed to minimum 8K\n"); |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3349
diff
changeset
|
1709 } |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3349
diff
changeset
|
1710 } |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3349
diff
changeset
|
1711 |
10
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1712 // Check consistency of GC selection |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1713 bool Arguments::check_gc_consistency() { |
3767
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3349
diff
changeset
|
1714 check_gclog_consistency(); |
10
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1715 bool status = true; |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1716 // 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
|
1717 // 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
|
1718 // 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
|
1719 // 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
|
1720 // 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
|
1721 // 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
|
1722 // select conflicting combinations. |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1723 uint i = 0; |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1724 if (UseSerialGC) i++; |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1725 if (UseConcMarkSweepGC || UseParNewGC) i++; |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1726 if (UseParallelGC || UseParallelOldGC) i++; |
845
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
751
diff
changeset
|
1727 if (UseG1GC) i++; |
10
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1728 if (i > 1) { |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1729 jio_fprintf(defaultStream::error_stream(), |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1730 "Conflicting collector combinations in option list; " |
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1731 "please refer to the release notes for the combinations " |
28372612af5e
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0
diff
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|
1732 "allowed\n"); |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
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0
diff
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|
1733 status = false; |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
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0
diff
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|
1734 } |
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6362677: Change parallel GC collector default number of parallel GC threads.
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0
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|
1735 |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
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|
1736 return status; |
28372612af5e
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0
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|
1737 } |
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|
1738 |
1744
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6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
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|
1739 // Check stack pages settings |
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
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|
1740 bool Arguments::check_stack_pages() |
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
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|
1741 { |
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|
1742 bool status = true; |
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6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
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|
1743 status = status && verify_min_value(StackYellowPages, 1, "StackYellowPages"); |
f8c5d1bdaad4
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|
1744 status = status && verify_min_value(StackRedPages, 1, "StackRedPages"); |
1867
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|
1745 // greater stack shadow pages can't generate instruction to bang stack |
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|
1746 status = status && verify_interval(StackShadowPages, 1, 50, "StackShadowPages"); |
1744
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1747 return status; |
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|
1748 } |
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1749 |
0 | 1750 // Check the consistency of vm_init_args |
1751 bool Arguments::check_vm_args_consistency() { | |
1752 // Method for adding checks for flag consistency. | |
1753 // The intent is to warn the user of all possible conflicts, | |
1754 // before returning an error. | |
1755 // Note: Needs platform-dependent factoring. | |
1756 bool status = true; | |
1757 | |
1758 #if ( (defined(COMPILER2) && defined(SPARC))) | |
1759 // NOTE: The call to VM_Version_init depends on the fact that VM_Version_init | |
1760 // on sparc doesn't require generation of a stub as is the case on, e.g., | |
1761 // x86. Normally, VM_Version_init must be called from init_globals in | |
1762 // init.cpp, which is called by the initial java thread *after* arguments | |
1763 // have been parsed. VM_Version_init gets called twice on sparc. | |
1764 extern void VM_Version_init(); | |
1765 VM_Version_init(); | |
1766 if (!VM_Version::has_v9()) { | |
1767 jio_fprintf(defaultStream::error_stream(), | |
1768 "V8 Machine detected, Server requires V9\n"); | |
1769 status = false; | |
1770 } | |
1771 #endif /* COMPILER2 && SPARC */ | |
1772 | |
1773 // Allow both -XX:-UseStackBanging and -XX:-UseBoundThreads in non-product | |
1774 // builds so the cost of stack banging can be measured. | |
1775 #if (defined(PRODUCT) && defined(SOLARIS)) | |
1776 if (!UseBoundThreads && !UseStackBanging) { | |
1777 jio_fprintf(defaultStream::error_stream(), | |
1778 "-UseStackBanging conflicts with -UseBoundThreads\n"); | |
1779 | |
1780 status = false; | |
1781 } | |
1782 #endif | |
1783 | |
1784 if (TLABRefillWasteFraction == 0) { | |
1785 jio_fprintf(defaultStream::error_stream(), | |
1786 "TLABRefillWasteFraction should be a denominator, " | |
1787 "not " SIZE_FORMAT "\n", | |
1788 TLABRefillWasteFraction); | |
1789 status = false; | |
1790 } | |
1791 | |
10
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|
1792 status = status && verify_percentage(AdaptiveSizePolicyWeight, |
0 | 1793 "AdaptiveSizePolicyWeight"); |
10
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|
1794 status = status && verify_percentage(AdaptivePermSizeWeight, "AdaptivePermSizeWeight"); |
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1795 status = status && verify_percentage(ThresholdTolerance, "ThresholdTolerance"); |
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|
1796 status = status && verify_percentage(MinHeapFreeRatio, "MinHeapFreeRatio"); |
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|
1797 status = status && verify_percentage(MaxHeapFreeRatio, "MaxHeapFreeRatio"); |
0 | 1798 |
1799 if (MinHeapFreeRatio > MaxHeapFreeRatio) { | |
1800 jio_fprintf(defaultStream::error_stream(), | |
1801 "MinHeapFreeRatio (" UINTX_FORMAT ") must be less than or " | |
1802 "equal to MaxHeapFreeRatio (" UINTX_FORMAT ")\n", | |
1803 MinHeapFreeRatio, MaxHeapFreeRatio); | |
1804 status = false; | |
1805 } | |
1806 // Keeping the heap 100% free is hard ;-) so limit it to 99%. | |
1807 MinHeapFreeRatio = MIN2(MinHeapFreeRatio, (uintx) 99); | |
1808 | |
1809 if (FullGCALot && FLAG_IS_DEFAULT(MarkSweepAlwaysCompactCount)) { | |
1810 MarkSweepAlwaysCompactCount = 1; // Move objects every gc. | |
1811 } | |
1812 | |
483
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1813 if (UseParallelOldGC && ParallelOldGCSplitALot) { |
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|
1814 // Settings to encourage splitting. |
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|
1815 if (!FLAG_IS_CMDLINE(NewRatio)) { |
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1816 FLAG_SET_CMDLINE(intx, NewRatio, 2); |
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|
1817 } |
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1818 if (!FLAG_IS_CMDLINE(ScavengeBeforeFullGC)) { |
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|
1819 FLAG_SET_CMDLINE(bool, ScavengeBeforeFullGC, false); |
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|
1820 } |
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|
1821 } |
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|
1822 |
10
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1823 status = status && verify_percentage(GCHeapFreeLimit, "GCHeapFreeLimit"); |
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1824 status = status && verify_percentage(GCTimeLimit, "GCTimeLimit"); |
0 | 1825 if (GCTimeLimit == 100) { |
1826 // Turn off gc-overhead-limit-exceeded checks | |
1827 FLAG_SET_DEFAULT(UseGCOverheadLimit, false); | |
1828 } | |
1829 | |
10
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1830 status = status && verify_percentage(GCHeapFreeLimit, "GCHeapFreeLimit"); |
0 | 1831 |
10
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1832 status = status && check_gc_consistency(); |
1744
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1833 status = status && check_stack_pages(); |
0 | 1834 |
1835 if (_has_alloc_profile) { | |
1836 if (UseParallelGC || UseParallelOldGC) { | |
1837 jio_fprintf(defaultStream::error_stream(), | |
1838 "error: invalid argument combination.\n" | |
1839 "Allocation profiling (-Xaprof) cannot be used together with " | |
1840 "Parallel GC (-XX:+UseParallelGC or -XX:+UseParallelOldGC).\n"); | |
1841 status = false; | |
1842 } | |
1843 if (UseConcMarkSweepGC) { | |
1844 jio_fprintf(defaultStream::error_stream(), | |
1845 "error: invalid argument combination.\n" | |
1846 "Allocation profiling (-Xaprof) cannot be used together with " | |
1847 "the CMS collector (-XX:+UseConcMarkSweepGC).\n"); | |
1848 status = false; | |
1849 } | |
1850 } | |
1851 | |
1852 if (CMSIncrementalMode) { | |
1853 if (!UseConcMarkSweepGC) { | |
1854 jio_fprintf(defaultStream::error_stream(), | |
1855 "error: invalid argument combination.\n" | |
1856 "The CMS collector (-XX:+UseConcMarkSweepGC) must be " | |
1857 "selected in order\nto use CMSIncrementalMode.\n"); | |
1858 status = false; | |
1859 } else { | |
10
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|
1860 status = status && verify_percentage(CMSIncrementalDutyCycle, |
0 | 1861 "CMSIncrementalDutyCycle"); |
10
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|
1862 status = status && verify_percentage(CMSIncrementalDutyCycleMin, |
0 | 1863 "CMSIncrementalDutyCycleMin"); |
10
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1864 status = status && verify_percentage(CMSIncrementalSafetyFactor, |
0 | 1865 "CMSIncrementalSafetyFactor"); |
10
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|
1866 status = status && verify_percentage(CMSIncrementalOffset, |
0 | 1867 "CMSIncrementalOffset"); |
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1868 status = status && verify_percentage(CMSExpAvgFactor, |
0 | 1869 "CMSExpAvgFactor"); |
1870 // If it was not set on the command line, set | |
1871 // CMSInitiatingOccupancyFraction to 1 so icms can initiate cycles early. | |
1872 if (CMSInitiatingOccupancyFraction < 0) { | |
1873 FLAG_SET_DEFAULT(CMSInitiatingOccupancyFraction, 1); | |
1874 } | |
1875 } | |
1876 } | |
1877 | |
1878 // CMS space iteration, which FLSVerifyAllHeapreferences entails, | |
1879 // insists that we hold the requisite locks so that the iteration is | |
1880 // MT-safe. For the verification at start-up and shut-down, we don't | |
1881 // yet have a good way of acquiring and releasing these locks, | |
1882 // which are not visible at the CollectedHeap level. We want to | |
1883 // be able to acquire these locks and then do the iteration rather | |
1884 // than just disable the lock verification. This will be fixed under | |
1885 // bug 4788986. | |
1886 if (UseConcMarkSweepGC && FLSVerifyAllHeapReferences) { | |
1887 if (VerifyGCStartAt == 0) { | |
1888 warning("Heap verification at start-up disabled " | |
1889 "(due to current incompatibility with FLSVerifyAllHeapReferences)"); | |
1890 VerifyGCStartAt = 1; // Disable verification at start-up | |
1891 } | |
1892 if (VerifyBeforeExit) { | |
1893 warning("Heap verification at shutdown disabled " | |
1894 "(due to current incompatibility with FLSVerifyAllHeapReferences)"); | |
1895 VerifyBeforeExit = false; // Disable verification at shutdown | |
1896 } | |
1897 } | |
1898 | |
1899 // Note: only executed in non-PRODUCT mode | |
1900 if (!UseAsyncConcMarkSweepGC && | |
1901 (ExplicitGCInvokesConcurrent || | |
1902 ExplicitGCInvokesConcurrentAndUnloadsClasses)) { | |
1903 jio_fprintf(defaultStream::error_stream(), | |
1904 "error: +ExplictGCInvokesConcurrent[AndUnloadsClasses] conflicts" | |
1905 " with -UseAsyncConcMarkSweepGC"); | |
1906 status = false; | |
1907 } | |
1908 | |
2366
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1909 status = status && verify_min_value(ParGCArrayScanChunk, 1, "ParGCArrayScanChunk"); |
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1910 |
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1911 #ifndef SERIALGC |
1283
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1912 if (UseG1GC) { |
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1913 status = status && verify_percentage(InitiatingHeapOccupancyPercent, |
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1914 "InitiatingHeapOccupancyPercent"); |
2174
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1915 status = status && verify_min_value(G1RefProcDrainInterval, 1, |
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|
1916 "G1RefProcDrainInterval"); |
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1917 status = status && verify_min_value((intx)G1ConcMarkStepDurationMillis, 1, |
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|
1918 "G1ConcMarkStepDurationMillis"); |
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|
1919 } |
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1920 #endif |
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1921 |
1244
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|
1922 status = status && verify_interval(RefDiscoveryPolicy, |
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1923 ReferenceProcessor::DiscoveryPolicyMin, |
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diff
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|
1924 ReferenceProcessor::DiscoveryPolicyMax, |
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|
1925 "RefDiscoveryPolicy"); |
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|
1926 |
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6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
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|
1927 // Limit the lower bound of this flag to 1 as it is used in a division |
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6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
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1928 // expression. |
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|
1929 status = status && verify_interval(TLABWasteTargetPercent, |
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|
1930 1, 100, "TLABWasteTargetPercent"); |
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|
1931 |
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1932 status = status && verify_object_alignment(); |
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1933 |
0 | 1934 return status; |
1935 } | |
1936 | |
1937 bool Arguments::is_bad_option(const JavaVMOption* option, jboolean ignore, | |
1938 const char* option_type) { | |
1939 if (ignore) return false; | |
1940 | |
1941 const char* spacer = " "; | |
1942 if (option_type == NULL) { | |
1943 option_type = ++spacer; // Set both to the empty string. | |
1944 } | |
1945 | |
1946 if (os::obsolete_option(option)) { | |
1947 jio_fprintf(defaultStream::error_stream(), | |
1948 "Obsolete %s%soption: %s\n", option_type, spacer, | |
1949 option->optionString); | |
1950 return false; | |
1951 } else { | |
1952 jio_fprintf(defaultStream::error_stream(), | |
1953 "Unrecognized %s%soption: %s\n", option_type, spacer, | |
1954 option->optionString); | |
1955 return true; | |
1956 } | |
1957 } | |
1958 | |
1959 static const char* user_assertion_options[] = { | |
1960 "-da", "-ea", "-disableassertions", "-enableassertions", 0 | |
1961 }; | |
1962 | |
1963 static const char* system_assertion_options[] = { | |
1964 "-dsa", "-esa", "-disablesystemassertions", "-enablesystemassertions", 0 | |
1965 }; | |
1966 | |
1967 // Return true if any of the strings in null-terminated array 'names' matches. | |
1968 // If tail_allowed is true, then the tail must begin with a colon; otherwise, | |
1969 // the option must match exactly. | |
1970 static bool match_option(const JavaVMOption* option, const char** names, const char** tail, | |
1971 bool tail_allowed) { | |
1972 for (/* empty */; *names != NULL; ++names) { | |
1973 if (match_option(option, *names, tail)) { | |
1974 if (**tail == '\0' || tail_allowed && **tail == ':') { | |
1975 return true; | |
1976 } | |
1977 } | |
1978 } | |
1979 return false; | |
1980 } | |
1981 | |
1284 | 1982 bool Arguments::parse_uintx(const char* value, |
1983 uintx* uintx_arg, | |
1984 uintx min_size) { | |
1985 | |
1986 // Check the sign first since atomull() parses only unsigned values. | |
1987 bool value_is_positive = !(*value == '-'); | |
1988 | |
1989 if (value_is_positive) { | |
1990 julong n; | |
1991 bool good_return = atomull(value, &n); | |
1992 if (good_return) { | |
1993 bool above_minimum = n >= min_size; | |
1994 bool value_is_too_large = n > max_uintx; | |
1995 | |
1996 if (above_minimum && !value_is_too_large) { | |
1997 *uintx_arg = n; | |
1998 return true; | |
1999 } | |
2000 } | |
2001 } | |
2002 return false; | |
2003 } | |
2004 | |
0 | 2005 Arguments::ArgsRange Arguments::parse_memory_size(const char* s, |
489
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2006 julong* long_arg, |
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|
2007 julong min_size) { |
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|
2008 if (!atomull(s, long_arg)) return arg_unreadable; |
0 | 2009 return check_memory_size(*long_arg, min_size); |
2010 } | |
2011 | |
2012 // Parse JavaVMInitArgs structure | |
2013 | |
2014 jint Arguments::parse_vm_init_args(const JavaVMInitArgs* args) { | |
2015 // For components of the system classpath. | |
2016 SysClassPath scp(Arguments::get_sysclasspath()); | |
2017 bool scp_assembly_required = false; | |
2018 | |
2019 // Save default settings for some mode flags | |
2020 Arguments::_AlwaysCompileLoopMethods = AlwaysCompileLoopMethods; | |
2021 Arguments::_UseOnStackReplacement = UseOnStackReplacement; | |
2022 Arguments::_ClipInlining = ClipInlining; | |
2023 Arguments::_BackgroundCompilation = BackgroundCompilation; | |
2024 | |
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2025 // Setup flags for mixed which is the default |
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2026 set_mode_flags(_mixed); |
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2027 |
0 | 2028 // Parse JAVA_TOOL_OPTIONS environment variable (if present) |
2029 jint result = parse_java_tool_options_environment_variable(&scp, &scp_assembly_required); | |
2030 if (result != JNI_OK) { | |
2031 return result; | |
2032 } | |
2033 | |
2034 // Parse JavaVMInitArgs structure passed in | |
2035 result = parse_each_vm_init_arg(args, &scp, &scp_assembly_required, COMMAND_LINE); | |
2036 if (result != JNI_OK) { | |
2037 return result; | |
2038 } | |
2039 | |
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2040 if (UseGraal) { |
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2041 if (PrintVMOptions) { |
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2042 tty->print_cr("Running Graal VM... "); |
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2043 } |
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2044 const int BUFFER_SIZE = 1024; |
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2045 char graal_dir[BUFFER_SIZE]; |
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2046 char temp[BUFFER_SIZE]; |
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2047 if (!os::getenv("GRAAL", graal_dir, sizeof(graal_dir))) { |
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2048 jio_fprintf(defaultStream::output_stream(), "Error while starting Graal VM: The GRAAL environment variable needs to point to the directory containing the Graal projects.\n"); |
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2049 vm_exit(0); |
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2050 } |
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2051 if (PrintVMOptions) tty->print_cr("GRAAL=%s", graal_dir); |
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2052 SysClassPath scp_compiler(Arguments::get_sysclasspath()); |
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2053 sprintf(temp, "%s/com.oracle.max.cri/bin", graal_dir); |
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2054 scp_compiler.add_prefix(temp); |
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2055 sprintf(temp, "%s/com.oracle.max.criutils/bin", graal_dir); |
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2056 scp_compiler.add_prefix(temp); |
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2057 sprintf(temp, "%s/com.oracle.max.base/bin", graal_dir); |
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2058 scp_compiler.add_prefix(temp); |
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2059 sprintf(temp, "%s/com.oracle.max.asmdis/bin", graal_dir); |
3601
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2060 scp_compiler.add_prefix(temp); |
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2061 sprintf(temp, "%s/com.oracle.max.asm/bin", graal_dir); |
3601
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2062 scp_compiler.add_prefix(temp); |
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2063 sprintf(temp, "%s/com.oracle.max.graal.graph/bin", graal_dir); |
3601
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|
2064 scp_compiler.add_prefix(temp); |
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|
2065 sprintf(temp, "%s/com.oracle.max.graal.compiler/bin", graal_dir); |
3601
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|
2066 scp_compiler.add_prefix(temp); |
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2067 sprintf(temp, "%s/com.oracle.max.graal.nodes/bin", graal_dir); |
3601
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|
2068 scp_compiler.add_prefix(temp); |
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|
2069 sprintf(temp, "%s/com.oracle.max.graal.snippets/bin", graal_dir); |
3601
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|
2070 scp_compiler.add_prefix(temp); |
3736
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|
2071 sprintf(temp, "%s/com.oracle.max.graal.criutils/bin", graal_dir); |
3601
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|
2072 scp_compiler.add_prefix(temp); |
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|
2073 sprintf(temp, "%s/com.oracle.max.graal.hotspot/bin", graal_dir); |
3601
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|
2074 scp_compiler.add_prefix(temp); |
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2075 scp_compiler.expand_endorsed(); |
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|
2076 Arguments::set_compilerclasspath(scp_compiler.combined_path()); |
3543
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|
2077 } |
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Thomas Wuerthinger <thomas@wuerthinger.net>
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|
2078 |
531
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|
2079 if (AggressiveOpts) { |
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2080 // Insert alt-rt.jar between user-specified bootclasspath |
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2081 // prefix and the default bootclasspath. os::set_boot_path() |
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2082 // uses meta_index_dir as the default bootclasspath directory. |
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2083 const char* altclasses_jar = "alt-rt.jar"; |
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2084 size_t altclasses_path_len = strlen(get_meta_index_dir()) + 1 + |
40ee984935b9
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2085 strlen(altclasses_jar); |
40ee984935b9
6792705: Add JAR file to bootclasspath when using AggressiveOpts
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|
2086 char* altclasses_path = NEW_C_HEAP_ARRAY(char, altclasses_path_len); |
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2087 strcpy(altclasses_path, get_meta_index_dir()); |
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|
2088 strcat(altclasses_path, altclasses_jar); |
40ee984935b9
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|
2089 scp.add_suffix_to_prefix(altclasses_path); |
40ee984935b9
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|
2090 scp_assembly_required = true; |
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|
2091 FREE_C_HEAP_ARRAY(char, altclasses_path); |
40ee984935b9
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|
2092 } |
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|
2093 |
0 | 2094 // Parse _JAVA_OPTIONS environment variable (if present) (mimics classic VM) |
2095 result = parse_java_options_environment_variable(&scp, &scp_assembly_required); | |
2096 if (result != JNI_OK) { | |
2097 return result; | |
2098 } | |
2099 | |
2100 // Do final processing now that all arguments have been parsed | |
2101 result = finalize_vm_init_args(&scp, scp_assembly_required); | |
2102 if (result != JNI_OK) { | |
2103 return result; | |
2104 } | |
2105 | |
2106 return JNI_OK; | |
2107 } | |
2108 | |
2109 jint Arguments::parse_each_vm_init_arg(const JavaVMInitArgs* args, | |
2110 SysClassPath* scp_p, | |
2111 bool* scp_assembly_required_p, | |
2112 FlagValueOrigin origin) { | |
2113 // Remaining part of option string | |
2114 const char* tail; | |
2115 | |
2116 // iterate over arguments | |
2117 for (int index = 0; index < args->nOptions; index++) { | |
2118 bool is_absolute_path = false; // for -agentpath vs -agentlib | |
2119 | |
2120 const JavaVMOption* option = args->options + index; | |
2121 | |
2122 if (!match_option(option, "-Djava.class.path", &tail) && | |
2123 !match_option(option, "-Dsun.java.command", &tail) && | |
2124 !match_option(option, "-Dsun.java.launcher", &tail)) { | |
2125 | |
2126 // add all jvm options to the jvm_args string. This string | |
2127 // is used later to set the java.vm.args PerfData string constant. | |
2128 // the -Djava.class.path and the -Dsun.java.command options are | |
2129 // omitted from jvm_args string as each have their own PerfData | |
2130 // string constant object. | |
2131 build_jvm_args(option->optionString); | |
2132 } | |
2133 | |
2134 // -verbose:[class/gc/jni] | |
2135 if (match_option(option, "-verbose", &tail)) { | |
2136 if (!strcmp(tail, ":class") || !strcmp(tail, "")) { | |
2137 FLAG_SET_CMDLINE(bool, TraceClassLoading, true); | |
2138 FLAG_SET_CMDLINE(bool, TraceClassUnloading, true); | |
2139 } else if (!strcmp(tail, ":gc")) { | |
2140 FLAG_SET_CMDLINE(bool, PrintGC, true); | |
2141 } else if (!strcmp(tail, ":jni")) { | |
2142 FLAG_SET_CMDLINE(bool, PrintJNIResolving, true); | |
2143 } | |
2144 // -da / -ea / -disableassertions / -enableassertions | |
2145 // These accept an optional class/package name separated by a colon, e.g., | |
2146 // -da:java.lang.Thread. | |
2147 } else if (match_option(option, user_assertion_options, &tail, true)) { | |
2148 bool enable = option->optionString[1] == 'e'; // char after '-' is 'e' | |
2149 if (*tail == '\0') { | |
2150 JavaAssertions::setUserClassDefault(enable); | |
2151 } else { | |
2152 assert(*tail == ':', "bogus match by match_option()"); | |
2153 JavaAssertions::addOption(tail + 1, enable); | |
2154 } | |
2155 // -dsa / -esa / -disablesystemassertions / -enablesystemassertions | |
2156 } else if (match_option(option, system_assertion_options, &tail, false)) { | |
2157 bool enable = option->optionString[1] == 'e'; // char after '-' is 'e' | |
2158 JavaAssertions::setSystemClassDefault(enable); | |
2159 // -bootclasspath: | |
2160 } else if (match_option(option, "-Xbootclasspath:", &tail)) { | |
2161 scp_p->reset_path(tail); | |
2162 *scp_assembly_required_p = true; | |
2163 // -bootclasspath/a: | |
2164 } else if (match_option(option, "-Xbootclasspath/a:", &tail)) { | |
2165 scp_p->add_suffix(tail); | |
2166 *scp_assembly_required_p = true; | |
2167 // -bootclasspath/p: | |
2168 } else if (match_option(option, "-Xbootclasspath/p:", &tail)) { | |
2169 scp_p->add_prefix(tail); | |
2170 *scp_assembly_required_p = true; | |
2171 // -Xrun | |
2172 } else if (match_option(option, "-Xrun", &tail)) { | |
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2173 if (tail != NULL) { |
0 | 2174 const char* pos = strchr(tail, ':'); |
2175 size_t len = (pos == NULL) ? strlen(tail) : pos - tail; | |
2176 char* name = (char*)memcpy(NEW_C_HEAP_ARRAY(char, len + 1), tail, len); | |
2177 name[len] = '\0'; | |
2178 | |
2179 char *options = NULL; | |
2180 if(pos != NULL) { | |
2181 size_t len2 = strlen(pos+1) + 1; // options start after ':'. Final zero must be copied. | |
2182 options = (char*)memcpy(NEW_C_HEAP_ARRAY(char, len2), pos+1, len2); | |
2183 } | |
2184 #ifdef JVMTI_KERNEL | |
2185 if ((strcmp(name, "hprof") == 0) || (strcmp(name, "jdwp") == 0)) { | |
2186 warning("profiling and debugging agents are not supported with Kernel VM"); | |
2187 } else | |
2188 #endif // JVMTI_KERNEL | |
2189 add_init_library(name, options); | |
2190 } | |
2191 // -agentlib and -agentpath | |
2192 } else if (match_option(option, "-agentlib:", &tail) || | |
2193 (is_absolute_path = match_option(option, "-agentpath:", &tail))) { | |
2194 if(tail != NULL) { | |
2195 const char* pos = strchr(tail, '='); | |
2196 size_t len = (pos == NULL) ? strlen(tail) : pos - tail; | |
2197 char* name = strncpy(NEW_C_HEAP_ARRAY(char, len + 1), tail, len); | |
2198 name[len] = '\0'; | |
2199 | |
2200 char *options = NULL; | |
2201 if(pos != NULL) { | |
2202 options = strcpy(NEW_C_HEAP_ARRAY(char, strlen(pos + 1) + 1), pos + 1); | |
2203 } | |
2204 #ifdef JVMTI_KERNEL | |
2205 if ((strcmp(name, "hprof") == 0) || (strcmp(name, "jdwp") == 0)) { | |
2206 warning("profiling and debugging agents are not supported with Kernel VM"); | |
2207 } else | |
2208 #endif // JVMTI_KERNEL | |
2209 add_init_agent(name, options, is_absolute_path); | |
2210 | |
2211 } | |
2212 // -javaagent | |
2213 } else if (match_option(option, "-javaagent:", &tail)) { | |
2214 if(tail != NULL) { | |
2215 char *options = strcpy(NEW_C_HEAP_ARRAY(char, strlen(tail) + 1), tail); | |
2216 add_init_agent("instrument", options, false); | |
2217 } | |
2218 // -Xnoclassgc | |
2219 } else if (match_option(option, "-Xnoclassgc", &tail)) { | |
2220 FLAG_SET_CMDLINE(bool, ClassUnloading, false); | |
2221 // -Xincgc: i-CMS | |
2222 } else if (match_option(option, "-Xincgc", &tail)) { | |
2223 FLAG_SET_CMDLINE(bool, UseConcMarkSweepGC, true); | |
2224 FLAG_SET_CMDLINE(bool, CMSIncrementalMode, true); | |
2225 // -Xnoincgc: no i-CMS | |
2226 } else if (match_option(option, "-Xnoincgc", &tail)) { | |
2227 FLAG_SET_CMDLINE(bool, UseConcMarkSweepGC, false); | |
2228 FLAG_SET_CMDLINE(bool, CMSIncrementalMode, false); | |
2229 // -Xconcgc | |
2230 } else if (match_option(option, "-Xconcgc", &tail)) { | |
2231 FLAG_SET_CMDLINE(bool, UseConcMarkSweepGC, true); | |
2232 // -Xnoconcgc | |
2233 } else if (match_option(option, "-Xnoconcgc", &tail)) { | |
2234 FLAG_SET_CMDLINE(bool, UseConcMarkSweepGC, false); | |
2235 // -Xbatch | |
2236 } else if (match_option(option, "-Xbatch", &tail)) { | |
2237 FLAG_SET_CMDLINE(bool, BackgroundCompilation, false); | |
2238 // -Xmn for compatibility with other JVM vendors | |
2239 } else if (match_option(option, "-Xmn", &tail)) { | |
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|
2240 julong long_initial_eden_size = 0; |
0 | 2241 ArgsRange errcode = parse_memory_size(tail, &long_initial_eden_size, 1); |
2242 if (errcode != arg_in_range) { | |
2243 jio_fprintf(defaultStream::error_stream(), | |
2244 "Invalid initial eden size: %s\n", option->optionString); | |
2245 describe_range_error(errcode); | |
2246 return JNI_EINVAL; | |
2247 } | |
1064 | 2248 FLAG_SET_CMDLINE(uintx, MaxNewSize, (uintx)long_initial_eden_size); |
2249 FLAG_SET_CMDLINE(uintx, NewSize, (uintx)long_initial_eden_size); | |
0 | 2250 // -Xms |
2251 } else if (match_option(option, "-Xms", &tail)) { | |
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|
2252 julong long_initial_heap_size = 0; |
0 | 2253 ArgsRange errcode = parse_memory_size(tail, &long_initial_heap_size, 1); |
2254 if (errcode != arg_in_range) { | |
2255 jio_fprintf(defaultStream::error_stream(), | |
2256 "Invalid initial heap size: %s\n", option->optionString); | |
2257 describe_range_error(errcode); | |
2258 return JNI_EINVAL; | |
2259 } | |
1064 | 2260 FLAG_SET_CMDLINE(uintx, InitialHeapSize, (uintx)long_initial_heap_size); |
0 | 2261 // Currently the minimum size and the initial heap sizes are the same. |
1064 | 2262 set_min_heap_size(InitialHeapSize); |
0 | 2263 // -Xmx |
2264 } else if (match_option(option, "-Xmx", &tail)) { | |
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2265 julong long_max_heap_size = 0; |
0 | 2266 ArgsRange errcode = parse_memory_size(tail, &long_max_heap_size, 1); |
2267 if (errcode != arg_in_range) { | |
2268 jio_fprintf(defaultStream::error_stream(), | |
2269 "Invalid maximum heap size: %s\n", option->optionString); | |
2270 describe_range_error(errcode); | |
2271 return JNI_EINVAL; | |
2272 } | |
1064 | 2273 FLAG_SET_CMDLINE(uintx, MaxHeapSize, (uintx)long_max_heap_size); |
0 | 2274 // Xmaxf |
2275 } else if (match_option(option, "-Xmaxf", &tail)) { | |
2276 int maxf = (int)(atof(tail) * 100); | |
2277 if (maxf < 0 || maxf > 100) { | |
2278 jio_fprintf(defaultStream::error_stream(), | |
2279 "Bad max heap free percentage size: %s\n", | |
2280 option->optionString); | |
2281 return JNI_EINVAL; | |
2282 } else { | |
2283 FLAG_SET_CMDLINE(uintx, MaxHeapFreeRatio, maxf); | |
2284 } | |
2285 // Xminf | |
2286 } else if (match_option(option, "-Xminf", &tail)) { | |
2287 int minf = (int)(atof(tail) * 100); | |
2288 if (minf < 0 || minf > 100) { | |
2289 jio_fprintf(defaultStream::error_stream(), | |
2290 "Bad min heap free percentage size: %s\n", | |
2291 option->optionString); | |
2292 return JNI_EINVAL; | |
2293 } else { | |
2294 FLAG_SET_CMDLINE(uintx, MinHeapFreeRatio, minf); | |
2295 } | |
2296 // -Xss | |
2297 } else if (match_option(option, "-Xss", &tail)) { | |
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2298 julong long_ThreadStackSize = 0; |
0 | 2299 ArgsRange errcode = parse_memory_size(tail, &long_ThreadStackSize, 1000); |
2300 if (errcode != arg_in_range) { | |
2301 jio_fprintf(defaultStream::error_stream(), | |
2302 "Invalid thread stack size: %s\n", option->optionString); | |
2303 describe_range_error(errcode); | |
2304 return JNI_EINVAL; | |
2305 } | |
2306 // Internally track ThreadStackSize in units of 1024 bytes. | |
2307 FLAG_SET_CMDLINE(intx, ThreadStackSize, | |
2308 round_to((int)long_ThreadStackSize, K) / K); | |
2309 // -Xoss | |
2310 } else if (match_option(option, "-Xoss", &tail)) { | |
2311 // HotSpot does not have separate native and Java stacks, ignore silently for compatibility | |
2312 // -Xmaxjitcodesize | |
2095
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2313 } else if (match_option(option, "-Xmaxjitcodesize", &tail) || |
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2314 match_option(option, "-XX:ReservedCodeCacheSize=", &tail)) { |
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2315 julong long_ReservedCodeCacheSize = 0; |
0 | 2316 ArgsRange errcode = parse_memory_size(tail, &long_ReservedCodeCacheSize, |
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2317 (size_t)InitialCodeCacheSize); |
0 | 2318 if (errcode != arg_in_range) { |
2319 jio_fprintf(defaultStream::error_stream(), | |
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2320 "Invalid maximum code cache size: %s. Should be greater than InitialCodeCacheSize=%dK\n", |
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2321 option->optionString, InitialCodeCacheSize/K); |
0 | 2322 describe_range_error(errcode); |
2323 return JNI_EINVAL; | |
2324 } | |
2325 FLAG_SET_CMDLINE(uintx, ReservedCodeCacheSize, (uintx)long_ReservedCodeCacheSize); | |
2326 // -green | |
2327 } else if (match_option(option, "-green", &tail)) { | |
2328 jio_fprintf(defaultStream::error_stream(), | |
2329 "Green threads support not available\n"); | |
2330 return JNI_EINVAL; | |
2331 // -native | |
2332 } else if (match_option(option, "-native", &tail)) { | |
2333 // HotSpot always uses native threads, ignore silently for compatibility | |
2334 // -Xsqnopause | |
2335 } else if (match_option(option, "-Xsqnopause", &tail)) { | |
2336 // EVM option, ignore silently for compatibility | |
2337 // -Xrs | |
2338 } else if (match_option(option, "-Xrs", &tail)) { | |
2339 // Classic/EVM option, new functionality | |
2340 FLAG_SET_CMDLINE(bool, ReduceSignalUsage, true); | |
2341 } else if (match_option(option, "-Xusealtsigs", &tail)) { | |
2342 // change default internal VM signals used - lower case for back compat | |
2343 FLAG_SET_CMDLINE(bool, UseAltSigs, true); | |
2344 // -Xoptimize | |
2345 } else if (match_option(option, "-Xoptimize", &tail)) { | |
2346 // EVM option, ignore silently for compatibility | |
2347 // -Xprof | |
2348 } else if (match_option(option, "-Xprof", &tail)) { | |
2349 #ifndef FPROF_KERNEL | |
2350 _has_profile = true; | |
2351 #else // FPROF_KERNEL | |
2352 // do we have to exit? | |
2353 warning("Kernel VM does not support flat profiling."); | |
2354 #endif // FPROF_KERNEL | |
2355 // -Xaprof | |
2356 } else if (match_option(option, "-Xaprof", &tail)) { | |
2357 _has_alloc_profile = true; | |
2358 // -Xconcurrentio | |
2359 } else if (match_option(option, "-Xconcurrentio", &tail)) { | |
2360 FLAG_SET_CMDLINE(bool, UseLWPSynchronization, true); | |
2361 FLAG_SET_CMDLINE(bool, BackgroundCompilation, false); | |
2362 FLAG_SET_CMDLINE(intx, DeferThrSuspendLoopCount, 1); | |
2363 FLAG_SET_CMDLINE(bool, UseTLAB, false); | |
2364 FLAG_SET_CMDLINE(uintx, NewSizeThreadIncrease, 16 * K); // 20Kb per thread added to new generation | |
2365 | |
2366 // -Xinternalversion | |
2367 } else if (match_option(option, "-Xinternalversion", &tail)) { | |
2368 jio_fprintf(defaultStream::output_stream(), "%s\n", | |
2369 VM_Version::internal_vm_info_string()); | |
2370 vm_exit(0); | |
2371 #ifndef PRODUCT | |
2372 // -Xprintflags | |
2373 } else if (match_option(option, "-Xprintflags", &tail)) { | |
2374 CommandLineFlags::printFlags(); | |
2375 vm_exit(0); | |
2376 #endif | |
2377 // -D | |
2378 } else if (match_option(option, "-D", &tail)) { | |
2379 if (!add_property(tail)) { | |
2380 return JNI_ENOMEM; | |
2381 } | |
2382 // Out of the box management support | |
2383 if (match_option(option, "-Dcom.sun.management", &tail)) { | |
2384 FLAG_SET_CMDLINE(bool, ManagementServer, true); | |
2385 } | |
2386 // -Xint | |
2387 } else if (match_option(option, "-Xint", &tail)) { | |
2388 set_mode_flags(_int); | |
2389 // -Xmixed | |
2390 } else if (match_option(option, "-Xmixed", &tail)) { | |
2391 set_mode_flags(_mixed); | |
2392 // -Xcomp | |
2393 } else if (match_option(option, "-Xcomp", &tail)) { | |
2394 // for testing the compiler; turn off all flags that inhibit compilation | |
2395 set_mode_flags(_comp); | |
2396 | |
2397 // -Xshare:dump | |
2398 } else if (match_option(option, "-Xshare:dump", &tail)) { | |
2399 #ifdef TIERED | |
2400 FLAG_SET_CMDLINE(bool, DumpSharedSpaces, true); | |
2401 set_mode_flags(_int); // Prevent compilation, which creates objects | |
2402 #elif defined(COMPILER2) | |
2403 vm_exit_during_initialization( | |
2404 "Dumping a shared archive is not supported on the Server JVM.", NULL); | |
2405 #elif defined(KERNEL) | |
2406 vm_exit_during_initialization( | |
2407 "Dumping a shared archive is not supported on the Kernel JVM.", NULL); | |
2408 #else | |
2409 FLAG_SET_CMDLINE(bool, DumpSharedSpaces, true); | |
2410 set_mode_flags(_int); // Prevent compilation, which creates objects | |
2411 #endif | |
2412 // -Xshare:on | |
2413 } else if (match_option(option, "-Xshare:on", &tail)) { | |
2414 FLAG_SET_CMDLINE(bool, UseSharedSpaces, true); | |
2415 FLAG_SET_CMDLINE(bool, RequireSharedSpaces, true); | |
2416 // -Xshare:auto | |
2417 } else if (match_option(option, "-Xshare:auto", &tail)) { | |
2418 FLAG_SET_CMDLINE(bool, UseSharedSpaces, true); | |
2419 FLAG_SET_CMDLINE(bool, RequireSharedSpaces, false); | |
2420 // -Xshare:off | |
2421 } else if (match_option(option, "-Xshare:off", &tail)) { | |
2422 FLAG_SET_CMDLINE(bool, UseSharedSpaces, false); | |
2423 FLAG_SET_CMDLINE(bool, RequireSharedSpaces, false); | |
2424 | |
2425 // -Xverify | |
2426 } else if (match_option(option, "-Xverify", &tail)) { | |
2427 if (strcmp(tail, ":all") == 0 || strcmp(tail, "") == 0) { | |
2428 FLAG_SET_CMDLINE(bool, BytecodeVerificationLocal, true); | |
2429 FLAG_SET_CMDLINE(bool, BytecodeVerificationRemote, true); | |
2430 } else if (strcmp(tail, ":remote") == 0) { | |
2431 FLAG_SET_CMDLINE(bool, BytecodeVerificationLocal, false); | |
2432 FLAG_SET_CMDLINE(bool, BytecodeVerificationRemote, true); | |
2433 } else if (strcmp(tail, ":none") == 0) { | |
2434 FLAG_SET_CMDLINE(bool, BytecodeVerificationLocal, false); | |
2435 FLAG_SET_CMDLINE(bool, BytecodeVerificationRemote, false); | |
2436 } else if (is_bad_option(option, args->ignoreUnrecognized, "verification")) { | |
2437 return JNI_EINVAL; | |
2438 } | |
2439 // -Xdebug | |
2440 } else if (match_option(option, "-Xdebug", &tail)) { | |
2441 // note this flag has been used, then ignore | |
2442 set_xdebug_mode(true); | |
2443 // -Xnoagent | |
2444 } else if (match_option(option, "-Xnoagent", &tail)) { | |
2445 // For compatibility with classic. HotSpot refuses to load the old style agent.dll. | |
2446 } else if (match_option(option, "-Xboundthreads", &tail)) { | |
2447 // Bind user level threads to kernel threads (Solaris only) | |
2448 FLAG_SET_CMDLINE(bool, UseBoundThreads, true); | |
2449 } else if (match_option(option, "-Xloggc:", &tail)) { | |
2450 // Redirect GC output to the file. -Xloggc:<filename> | |
2451 // ostream_init_log(), when called will use this filename | |
2452 // to initialize a fileStream. | |
2453 _gc_log_filename = strdup(tail); | |
2454 FLAG_SET_CMDLINE(bool, PrintGC, true); | |
2455 FLAG_SET_CMDLINE(bool, PrintGCTimeStamps, true); | |
2456 | |
2457 // JNI hooks | |
2458 } else if (match_option(option, "-Xcheck", &tail)) { | |
2459 if (!strcmp(tail, ":jni")) { | |
2460 CheckJNICalls = true; | |
2461 } else if (is_bad_option(option, args->ignoreUnrecognized, | |
2462 "check")) { | |
2463 return JNI_EINVAL; | |
2464 } | |
2465 } else if (match_option(option, "vfprintf", &tail)) { | |
2466 _vfprintf_hook = CAST_TO_FN_PTR(vfprintf_hook_t, option->extraInfo); | |
2467 } else if (match_option(option, "exit", &tail)) { | |
2468 _exit_hook = CAST_TO_FN_PTR(exit_hook_t, option->extraInfo); | |
2469 } else if (match_option(option, "abort", &tail)) { | |
2470 _abort_hook = CAST_TO_FN_PTR(abort_hook_t, option->extraInfo); | |
2471 // -XX:+AggressiveHeap | |
2472 } else if (match_option(option, "-XX:+AggressiveHeap", &tail)) { | |
2473 | |
2474 // This option inspects the machine and attempts to set various | |
2475 // parameters to be optimal for long-running, memory allocation | |
2476 // intensive jobs. It is intended for machines with large | |
2477 // amounts of cpu and memory. | |
2478 | |
2479 // initHeapSize is needed since _initial_heap_size is 4 bytes on a 32 bit | |
2480 // VM, but we may not be able to represent the total physical memory | |
2481 // available (like having 8gb of memory on a box but using a 32bit VM). | |
2482 // Thus, we need to make sure we're using a julong for intermediate | |
2483 // calculations. | |
2484 julong initHeapSize; | |
2485 julong total_memory = os::physical_memory(); | |
2486 | |
2487 if (total_memory < (julong)256*M) { | |
2488 jio_fprintf(defaultStream::error_stream(), | |
2489 "You need at least 256mb of memory to use -XX:+AggressiveHeap\n"); | |
2490 vm_exit(1); | |
2491 } | |
2492 | |
2493 // The heap size is half of available memory, or (at most) | |
2494 // all of possible memory less 160mb (leaving room for the OS | |
2495 // when using ISM). This is the maximum; because adaptive sizing | |
2496 // is turned on below, the actual space used may be smaller. | |
2497 | |
2498 initHeapSize = MIN2(total_memory / (julong)2, | |
2499 total_memory - (julong)160*M); | |
2500 | |
2501 // Make sure that if we have a lot of memory we cap the 32 bit | |
2502 // process space. The 64bit VM version of this function is a nop. | |
2503 initHeapSize = os::allocatable_physical_memory(initHeapSize); | |
2504 | |
2505 // The perm gen is separate but contiguous with the | |
2506 // object heap (and is reserved with it) so subtract it | |
2507 // from the heap size. | |
2508 if (initHeapSize > MaxPermSize) { | |
2509 initHeapSize = initHeapSize - MaxPermSize; | |
2510 } else { | |
2511 warning("AggressiveHeap and MaxPermSize values may conflict"); | |
2512 } | |
2513 | |
2514 if (FLAG_IS_DEFAULT(MaxHeapSize)) { | |
2515 FLAG_SET_CMDLINE(uintx, MaxHeapSize, initHeapSize); | |
1064 | 2516 FLAG_SET_CMDLINE(uintx, InitialHeapSize, initHeapSize); |
0 | 2517 // Currently the minimum size and the initial heap sizes are the same. |
1064 | 2518 set_min_heap_size(initHeapSize); |
0 | 2519 } |
2520 if (FLAG_IS_DEFAULT(NewSize)) { | |
2521 // Make the young generation 3/8ths of the total heap. | |
2522 FLAG_SET_CMDLINE(uintx, NewSize, | |
2523 ((julong)MaxHeapSize / (julong)8) * (julong)3); | |
2524 FLAG_SET_CMDLINE(uintx, MaxNewSize, NewSize); | |
2525 } | |
2526 | |
2527 FLAG_SET_DEFAULT(UseLargePages, true); | |
2528 | |
2529 // Increase some data structure sizes for efficiency | |
2530 FLAG_SET_CMDLINE(uintx, BaseFootPrintEstimate, MaxHeapSize); | |
2531 FLAG_SET_CMDLINE(bool, ResizeTLAB, false); | |
2532 FLAG_SET_CMDLINE(uintx, TLABSize, 256*K); | |
2533 | |
2534 // See the OldPLABSize comment below, but replace 'after promotion' | |
2535 // with 'after copying'. YoungPLABSize is the size of the survivor | |
2536 // space per-gc-thread buffers. The default is 4kw. | |
2537 FLAG_SET_CMDLINE(uintx, YoungPLABSize, 256*K); // Note: this is in words | |
2538 | |
2539 // OldPLABSize is the size of the buffers in the old gen that | |
2540 // UseParallelGC uses to promote live data that doesn't fit in the | |
2541 // survivor spaces. At any given time, there's one for each gc thread. | |
2542 // The default size is 1kw. These buffers are rarely used, since the | |
2543 // survivor spaces are usually big enough. For specjbb, however, there | |
2544 // are occasions when there's lots of live data in the young gen | |
2545 // and we end up promoting some of it. We don't have a definite | |
2546 // explanation for why bumping OldPLABSize helps, but the theory | |
2547 // is that a bigger PLAB results in retaining something like the | |
2548 // original allocation order after promotion, which improves mutator | |
2549 // locality. A minor effect may be that larger PLABs reduce the | |
2550 // number of PLAB allocation events during gc. The value of 8kw | |
2551 // was arrived at by experimenting with specjbb. | |
2552 FLAG_SET_CMDLINE(uintx, OldPLABSize, 8*K); // Note: this is in words | |
2553 | |
2554 // CompilationPolicyChoice=0 causes the server compiler to adopt | |
2555 // a more conservative which-method-do-I-compile policy when one | |
2556 // of the counters maintained by the interpreter trips. The | |
2557 // result is reduced startup time and improved specjbb and | |
2558 // alacrity performance. Zero is the default, but we set it | |
2559 // explicitly here in case the default changes. | |
2560 // See runtime/compilationPolicy.*. | |
2561 FLAG_SET_CMDLINE(intx, CompilationPolicyChoice, 0); | |
2562 | |
2563 // Enable parallel GC and adaptive generation sizing | |
2564 FLAG_SET_CMDLINE(bool, UseParallelGC, true); | |
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2565 FLAG_SET_DEFAULT(ParallelGCThreads, |
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2566 Abstract_VM_Version::parallel_worker_threads()); |
0 | 2567 |
2568 // Encourage steady state memory management | |
2569 FLAG_SET_CMDLINE(uintx, ThresholdTolerance, 100); | |
2570 | |
2571 // This appears to improve mutator locality | |
2572 FLAG_SET_CMDLINE(bool, ScavengeBeforeFullGC, false); | |
2573 | |
2574 // Get around early Solaris scheduling bug | |
2575 // (affinity vs other jobs on system) | |
2576 // but disallow DR and offlining (5008695). | |
2577 FLAG_SET_CMDLINE(bool, BindGCTaskThreadsToCPUs, true); | |
2578 | |
2579 } else if (match_option(option, "-XX:+NeverTenure", &tail)) { | |
2580 // The last option must always win. | |
2581 FLAG_SET_CMDLINE(bool, AlwaysTenure, false); | |
2582 FLAG_SET_CMDLINE(bool, NeverTenure, true); | |
2583 } else if (match_option(option, "-XX:+AlwaysTenure", &tail)) { | |
2584 // The last option must always win. | |
2585 FLAG_SET_CMDLINE(bool, NeverTenure, false); | |
2586 FLAG_SET_CMDLINE(bool, AlwaysTenure, true); | |
2587 } else if (match_option(option, "-XX:+CMSPermGenSweepingEnabled", &tail) || | |
2588 match_option(option, "-XX:-CMSPermGenSweepingEnabled", &tail)) { | |
2589 jio_fprintf(defaultStream::error_stream(), | |
2590 "Please use CMSClassUnloadingEnabled in place of " | |
2591 "CMSPermGenSweepingEnabled in the future\n"); | |
2592 } else if (match_option(option, "-XX:+UseGCTimeLimit", &tail)) { | |
2593 FLAG_SET_CMDLINE(bool, UseGCOverheadLimit, true); | |
2594 jio_fprintf(defaultStream::error_stream(), | |
2595 "Please use -XX:+UseGCOverheadLimit in place of " | |
2596 "-XX:+UseGCTimeLimit in the future\n"); | |
2597 } else if (match_option(option, "-XX:-UseGCTimeLimit", &tail)) { | |
2598 FLAG_SET_CMDLINE(bool, UseGCOverheadLimit, false); | |
2599 jio_fprintf(defaultStream::error_stream(), | |
2600 "Please use -XX:-UseGCOverheadLimit in place of " | |
2601 "-XX:-UseGCTimeLimit in the future\n"); | |
2602 // The TLE options are for compatibility with 1.3 and will be | |
2603 // removed without notice in a future release. These options | |
2604 // are not to be documented. | |
2605 } else if (match_option(option, "-XX:MaxTLERatio=", &tail)) { | |
2606 // No longer used. | |
2607 } else if (match_option(option, "-XX:+ResizeTLE", &tail)) { | |
2608 FLAG_SET_CMDLINE(bool, ResizeTLAB, true); | |
2609 } else if (match_option(option, "-XX:-ResizeTLE", &tail)) { | |
2610 FLAG_SET_CMDLINE(bool, ResizeTLAB, false); | |
2611 } else if (match_option(option, "-XX:+PrintTLE", &tail)) { | |
2612 FLAG_SET_CMDLINE(bool, PrintTLAB, true); | |
2613 } else if (match_option(option, "-XX:-PrintTLE", &tail)) { | |
2614 FLAG_SET_CMDLINE(bool, PrintTLAB, false); | |
2615 } else if (match_option(option, "-XX:TLEFragmentationRatio=", &tail)) { | |
2616 // No longer used. | |
2617 } else if (match_option(option, "-XX:TLESize=", &tail)) { | |
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2618 julong long_tlab_size = 0; |
0 | 2619 ArgsRange errcode = parse_memory_size(tail, &long_tlab_size, 1); |
2620 if (errcode != arg_in_range) { | |
2621 jio_fprintf(defaultStream::error_stream(), | |
2622 "Invalid TLAB size: %s\n", option->optionString); | |
2623 describe_range_error(errcode); | |
2624 return JNI_EINVAL; | |
2625 } | |
2626 FLAG_SET_CMDLINE(uintx, TLABSize, long_tlab_size); | |
2627 } else if (match_option(option, "-XX:TLEThreadRatio=", &tail)) { | |
2628 // No longer used. | |
2629 } else if (match_option(option, "-XX:+UseTLE", &tail)) { | |
2630 FLAG_SET_CMDLINE(bool, UseTLAB, true); | |
2631 } else if (match_option(option, "-XX:-UseTLE", &tail)) { | |
2632 FLAG_SET_CMDLINE(bool, UseTLAB, false); | |
2633 SOLARIS_ONLY( | |
2634 } else if (match_option(option, "-XX:+UsePermISM", &tail)) { | |
2635 warning("-XX:+UsePermISM is obsolete."); | |
2636 FLAG_SET_CMDLINE(bool, UseISM, true); | |
2637 } else if (match_option(option, "-XX:-UsePermISM", &tail)) { | |
2638 FLAG_SET_CMDLINE(bool, UseISM, false); | |
2639 ) | |
2640 } else if (match_option(option, "-XX:+DisplayVMOutputToStderr", &tail)) { | |
2641 FLAG_SET_CMDLINE(bool, DisplayVMOutputToStdout, false); | |
2642 FLAG_SET_CMDLINE(bool, DisplayVMOutputToStderr, true); | |
2643 } else if (match_option(option, "-XX:+DisplayVMOutputToStdout", &tail)) { | |
2644 FLAG_SET_CMDLINE(bool, DisplayVMOutputToStderr, false); | |
2645 FLAG_SET_CMDLINE(bool, DisplayVMOutputToStdout, true); | |
2646 } else if (match_option(option, "-XX:+ExtendedDTraceProbes", &tail)) { | |
4006 | 2647 #if defined(DTRACE_ENABLED) |
0 | 2648 FLAG_SET_CMDLINE(bool, ExtendedDTraceProbes, true); |
2649 FLAG_SET_CMDLINE(bool, DTraceMethodProbes, true); | |
2650 FLAG_SET_CMDLINE(bool, DTraceAllocProbes, true); | |
2651 FLAG_SET_CMDLINE(bool, DTraceMonitorProbes, true); | |
4006 | 2652 #else // defined(DTRACE_ENABLED) |
0 | 2653 jio_fprintf(defaultStream::error_stream(), |
4006 | 2654 "ExtendedDTraceProbes flag is not applicable for this configuration\n"); |
0 | 2655 return JNI_EINVAL; |
4006 | 2656 #endif // defined(DTRACE_ENABLED) |
0 | 2657 #ifdef ASSERT |
1145
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1074
diff
changeset
|
2658 } else if (match_option(option, "-XX:+FullGCALot", &tail)) { |
0 | 2659 FLAG_SET_CMDLINE(bool, FullGCALot, true); |
2660 // disable scavenge before parallel mark-compact | |
2661 FLAG_SET_CMDLINE(bool, ScavengeBeforeFullGC, false); | |
2662 #endif | |
1145
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1074
diff
changeset
|
2663 } else if (match_option(option, "-XX:CMSParPromoteBlocksToClaim=", &tail)) { |
0 | 2664 julong cms_blocks_to_claim = (julong)atol(tail); |
2665 FLAG_SET_CMDLINE(uintx, CMSParPromoteBlocksToClaim, cms_blocks_to_claim); | |
2666 jio_fprintf(defaultStream::error_stream(), | |
1145
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1074
diff
changeset
|
2667 "Please use -XX:OldPLABSize in place of " |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1074
diff
changeset
|
2668 "-XX:CMSParPromoteBlocksToClaim in the future\n"); |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1074
diff
changeset
|
2669 } else if (match_option(option, "-XX:ParCMSPromoteBlocksToClaim=", &tail)) { |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1074
diff
changeset
|
2670 julong cms_blocks_to_claim = (julong)atol(tail); |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1074
diff
changeset
|
2671 FLAG_SET_CMDLINE(uintx, CMSParPromoteBlocksToClaim, cms_blocks_to_claim); |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1074
diff
changeset
|
2672 jio_fprintf(defaultStream::error_stream(), |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1074
diff
changeset
|
2673 "Please use -XX:OldPLABSize in place of " |
0 | 2674 "-XX:ParCMSPromoteBlocksToClaim in the future\n"); |
1145
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1074
diff
changeset
|
2675 } else if (match_option(option, "-XX:ParallelGCOldGenAllocBufferSize=", &tail)) { |
489
2494ab195856
6653214: MemoryPoolMXBean.setUsageThreshold() does not support large heap sizes.
swamyv
parents:
483
diff
changeset
|
2676 julong old_plab_size = 0; |
0 | 2677 ArgsRange errcode = parse_memory_size(tail, &old_plab_size, 1); |
2678 if (errcode != arg_in_range) { | |
2679 jio_fprintf(defaultStream::error_stream(), | |
2680 "Invalid old PLAB size: %s\n", option->optionString); | |
2681 describe_range_error(errcode); | |
2682 return JNI_EINVAL; | |
2683 } | |
489
2494ab195856
6653214: MemoryPoolMXBean.setUsageThreshold() does not support large heap sizes.
swamyv
parents:
483
diff
changeset
|
2684 FLAG_SET_CMDLINE(uintx, OldPLABSize, old_plab_size); |
0 | 2685 jio_fprintf(defaultStream::error_stream(), |
2686 "Please use -XX:OldPLABSize in place of " | |
2687 "-XX:ParallelGCOldGenAllocBufferSize in the future\n"); | |
1145
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1074
diff
changeset
|
2688 } else if (match_option(option, "-XX:ParallelGCToSpaceAllocBufferSize=", &tail)) { |
489
2494ab195856
6653214: MemoryPoolMXBean.setUsageThreshold() does not support large heap sizes.
swamyv
parents:
483
diff
changeset
|
2689 julong young_plab_size = 0; |
0 | 2690 ArgsRange errcode = parse_memory_size(tail, &young_plab_size, 1); |
2691 if (errcode != arg_in_range) { | |
2692 jio_fprintf(defaultStream::error_stream(), | |
2693 "Invalid young PLAB size: %s\n", option->optionString); | |
2694 describe_range_error(errcode); | |
2695 return JNI_EINVAL; | |
2696 } | |
489
2494ab195856
6653214: MemoryPoolMXBean.setUsageThreshold() does not support large heap sizes.
swamyv
parents:
483
diff
changeset
|
2697 FLAG_SET_CMDLINE(uintx, YoungPLABSize, young_plab_size); |
0 | 2698 jio_fprintf(defaultStream::error_stream(), |
2699 "Please use -XX:YoungPLABSize in place of " | |
2700 "-XX:ParallelGCToSpaceAllocBufferSize in the future\n"); | |
1284 | 2701 } else if (match_option(option, "-XX:CMSMarkStackSize=", &tail) || |
2702 match_option(option, "-XX:G1MarkStackSize=", &tail)) { | |
2703 julong stack_size = 0; | |
2704 ArgsRange errcode = parse_memory_size(tail, &stack_size, 1); | |
2705 if (errcode != arg_in_range) { | |
2706 jio_fprintf(defaultStream::error_stream(), | |
2707 "Invalid mark stack size: %s\n", option->optionString); | |
2708 describe_range_error(errcode); | |
2709 return JNI_EINVAL; | |
2710 } | |
2711 FLAG_SET_CMDLINE(uintx, MarkStackSize, stack_size); | |
2712 } else if (match_option(option, "-XX:CMSMarkStackSizeMax=", &tail)) { | |
2713 julong max_stack_size = 0; | |
2714 ArgsRange errcode = parse_memory_size(tail, &max_stack_size, 1); | |
2715 if (errcode != arg_in_range) { | |
2716 jio_fprintf(defaultStream::error_stream(), | |
2717 "Invalid maximum mark stack size: %s\n", | |
2718 option->optionString); | |
2719 describe_range_error(errcode); | |
2720 return JNI_EINVAL; | |
2721 } | |
2722 FLAG_SET_CMDLINE(uintx, MarkStackSizeMax, max_stack_size); | |
2723 } else if (match_option(option, "-XX:ParallelMarkingThreads=", &tail) || | |
2724 match_option(option, "-XX:ParallelCMSThreads=", &tail)) { | |
2725 uintx conc_threads = 0; | |
2726 if (!parse_uintx(tail, &conc_threads, 1)) { | |
2727 jio_fprintf(defaultStream::error_stream(), | |
2728 "Invalid concurrent threads: %s\n", option->optionString); | |
2729 return JNI_EINVAL; | |
2730 } | |
2731 FLAG_SET_CMDLINE(uintx, ConcGCThreads, conc_threads); | |
1145
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1074
diff
changeset
|
2732 } else if (match_option(option, "-XX:", &tail)) { // -XX:xxxx |
0 | 2733 // Skip -XX:Flags= since that case has already been handled |
2734 if (strncmp(tail, "Flags=", strlen("Flags=")) != 0) { | |
2735 if (!process_argument(tail, args->ignoreUnrecognized, origin)) { | |
2736 return JNI_EINVAL; | |
2737 } | |
2738 } | |
2906
0017f484608c
Made boolean options more robust to also allow -G:Time or -G:Meter.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
2901
diff
changeset
|
2739 } else if (match_option(option, "-G:", &tail)) { // -G:XXX |
2891
75a99b4f1c98
Rebranded C++ part from C1X to Graal.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
2873
diff
changeset
|
2740 // Option for the graal compiler. |
1437
9e5e83ca2259
Enabled -C1X:OPTIONS when running HotSpot/C1X. Enabled checkstyle for the HotSpotVM Java project.
Thomas Wuerthinger <wuerthinger@ssw.jku.at>
parents:
1356
diff
changeset
|
2741 if (PrintVMOptions) { |
2891
75a99b4f1c98
Rebranded C++ part from C1X to Graal.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
2873
diff
changeset
|
2742 tty->print_cr("graal option %s", tail); |
1437
9e5e83ca2259
Enabled -C1X:OPTIONS when running HotSpot/C1X. Enabled checkstyle for the HotSpotVM Java project.
Thomas Wuerthinger <wuerthinger@ssw.jku.at>
parents:
1356
diff
changeset
|
2743 } |
2891
75a99b4f1c98
Rebranded C++ part from C1X to Graal.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
2873
diff
changeset
|
2744 Arguments::add_graal_arg(tail); |
1437
9e5e83ca2259
Enabled -C1X:OPTIONS when running HotSpot/C1X. Enabled checkstyle for the HotSpotVM Java project.
Thomas Wuerthinger <wuerthinger@ssw.jku.at>
parents:
1356
diff
changeset
|
2745 |
0 | 2746 // Unknown option |
2747 } else if (is_bad_option(option, args->ignoreUnrecognized)) { | |
2748 return JNI_ERR; | |
2749 } | |
2750 } | |
3767
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3349
diff
changeset
|
2751 |
449
171e581e8161
6554406: Change switch UseVMInterruptibleIO default to false (sol)
xlu
parents:
420
diff
changeset
|
2752 // Change the default value for flags which have different default values |
171e581e8161
6554406: Change switch UseVMInterruptibleIO default to false (sol)
xlu
parents:
420
diff
changeset
|
2753 // when working with older JDKs. |
171e581e8161
6554406: Change switch UseVMInterruptibleIO default to false (sol)
xlu
parents:
420
diff
changeset
|
2754 if (JDK_Version::current().compare_major(6) <= 0 && |
171e581e8161
6554406: Change switch UseVMInterruptibleIO default to false (sol)
xlu
parents:
420
diff
changeset
|
2755 FLAG_IS_DEFAULT(UseVMInterruptibleIO)) { |
171e581e8161
6554406: Change switch UseVMInterruptibleIO default to false (sol)
xlu
parents:
420
diff
changeset
|
2756 FLAG_SET_DEFAULT(UseVMInterruptibleIO, true); |
171e581e8161
6554406: Change switch UseVMInterruptibleIO default to false (sol)
xlu
parents:
420
diff
changeset
|
2757 } |
1679
3d90023429ec
6888526: Linux getCurrentThreadCpuTime is drastically slower than Windows
aph
parents:
1628
diff
changeset
|
2758 #ifdef LINUX |
3d90023429ec
6888526: Linux getCurrentThreadCpuTime is drastically slower than Windows
aph
parents:
1628
diff
changeset
|
2759 if (JDK_Version::current().compare_major(6) <= 0 && |
3d90023429ec
6888526: Linux getCurrentThreadCpuTime is drastically slower than Windows
aph
parents:
1628
diff
changeset
|
2760 FLAG_IS_DEFAULT(UseLinuxPosixThreadCPUClocks)) { |
3d90023429ec
6888526: Linux getCurrentThreadCpuTime is drastically slower than Windows
aph
parents:
1628
diff
changeset
|
2761 FLAG_SET_DEFAULT(UseLinuxPosixThreadCPUClocks, false); |
3d90023429ec
6888526: Linux getCurrentThreadCpuTime is drastically slower than Windows
aph
parents:
1628
diff
changeset
|
2762 } |
3d90023429ec
6888526: Linux getCurrentThreadCpuTime is drastically slower than Windows
aph
parents:
1628
diff
changeset
|
2763 #endif // LINUX |
0 | 2764 return JNI_OK; |
2765 } | |
2766 | |
2767 jint Arguments::finalize_vm_init_args(SysClassPath* scp_p, bool scp_assembly_required) { | |
2768 // This must be done after all -D arguments have been processed. | |
2769 scp_p->expand_endorsed(); | |
2770 | |
2771 if (scp_assembly_required || scp_p->get_endorsed() != NULL) { | |
2772 // Assemble the bootclasspath elements into the final path. | |
2773 Arguments::set_sysclasspath(scp_p->combined_path()); | |
2774 } | |
2775 | |
2776 // This must be done after all arguments have been processed. | |
2777 // java_compiler() true means set to "NONE" or empty. | |
2778 if (java_compiler() && !xdebug_mode()) { | |
2779 // For backwards compatibility, we switch to interpreted mode if | |
2780 // -Djava.compiler="NONE" or "" is specified AND "-Xdebug" was | |
2781 // not specified. | |
2782 set_mode_flags(_int); | |
2783 } | |
2784 if (CompileThreshold == 0) { | |
2785 set_mode_flags(_int); | |
2786 } | |
2787 | |
2788 #ifndef COMPILER2 | |
2789 // Don't degrade server performance for footprint | |
2790 if (FLAG_IS_DEFAULT(UseLargePages) && | |
2791 MaxHeapSize < LargePageHeapSizeThreshold) { | |
2792 // No need for large granularity pages w/small heaps. | |
2793 // Note that large pages are enabled/disabled for both the | |
2794 // Java heap and the code cache. | |
2795 FLAG_SET_DEFAULT(UseLargePages, false); | |
2796 SOLARIS_ONLY(FLAG_SET_DEFAULT(UseMPSS, false)); | |
2797 SOLARIS_ONLY(FLAG_SET_DEFAULT(UseISM, false)); | |
2798 } | |
342
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
135
diff
changeset
|
2799 |
1251
576e77447e3c
6923002: assert(false,"this call site should not be polymorphic")
kvn
parents:
1188
diff
changeset
|
2800 // Tiered compilation is undefined with C1. |
576e77447e3c
6923002: assert(false,"this call site should not be polymorphic")
kvn
parents:
1188
diff
changeset
|
2801 TieredCompilation = false; |
0 | 2802 #else |
2803 if (!FLAG_IS_DEFAULT(OptoLoopAlignment) && FLAG_IS_DEFAULT(MaxLoopPad)) { | |
2804 FLAG_SET_DEFAULT(MaxLoopPad, OptoLoopAlignment-1); | |
2805 } | |
2806 #endif | |
2807 | |
1681
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2808 // If we are running in a headless jre, force java.awt.headless property |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2809 // to be true unless the property has already been set. |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2810 // Also allow the OS environment variable JAVA_AWT_HEADLESS to set headless state. |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2811 if (os::is_headless_jre()) { |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2812 const char* headless = Arguments::get_property("java.awt.headless"); |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2813 if (headless == NULL) { |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2814 char envbuffer[128]; |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2815 if (!os::getenv("JAVA_AWT_HEADLESS", envbuffer, sizeof(envbuffer))) { |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2816 if (!add_property("java.awt.headless=true")) { |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2817 return JNI_ENOMEM; |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2818 } |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2819 } else { |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2820 char buffer[256]; |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2821 strcpy(buffer, "java.awt.headless="); |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2822 strcat(buffer, envbuffer); |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2823 if (!add_property(buffer)) { |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2824 return JNI_ENOMEM; |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2825 } |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2826 } |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2827 } |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2828 } |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2829 |
0 | 2830 if (!check_vm_args_consistency()) { |
2831 return JNI_ERR; | |
2832 } | |
2833 | |
2834 return JNI_OK; | |
2835 } | |
2836 | |
2837 jint Arguments::parse_java_options_environment_variable(SysClassPath* scp_p, bool* scp_assembly_required_p) { | |
2838 return parse_options_environment_variable("_JAVA_OPTIONS", scp_p, | |
2839 scp_assembly_required_p); | |
2840 } | |
2841 | |
2842 jint Arguments::parse_java_tool_options_environment_variable(SysClassPath* scp_p, bool* scp_assembly_required_p) { | |
2843 return parse_options_environment_variable("JAVA_TOOL_OPTIONS", scp_p, | |
2844 scp_assembly_required_p); | |
2845 } | |
2846 | |
2847 jint Arguments::parse_options_environment_variable(const char* name, SysClassPath* scp_p, bool* scp_assembly_required_p) { | |
2848 const int N_MAX_OPTIONS = 64; | |
2849 const int OPTION_BUFFER_SIZE = 1024; | |
2850 char buffer[OPTION_BUFFER_SIZE]; | |
2851 | |
2852 // The variable will be ignored if it exceeds the length of the buffer. | |
2853 // Don't check this variable if user has special privileges | |
2854 // (e.g. unix su command). | |
2855 if (os::getenv(name, buffer, sizeof(buffer)) && | |
2856 !os::have_special_privileges()) { | |
2857 JavaVMOption options[N_MAX_OPTIONS]; // Construct option array | |
2858 jio_fprintf(defaultStream::error_stream(), | |
2859 "Picked up %s: %s\n", name, buffer); | |
2860 char* rd = buffer; // pointer to the input string (rd) | |
2861 int i; | |
2862 for (i = 0; i < N_MAX_OPTIONS;) { // repeat for all options in the input string | |
2863 while (isspace(*rd)) rd++; // skip whitespace | |
2864 if (*rd == 0) break; // we re done when the input string is read completely | |
2865 | |
2866 // The output, option string, overwrites the input string. | |
2867 // Because of quoting, the pointer to the option string (wrt) may lag the pointer to | |
2868 // input string (rd). | |
2869 char* wrt = rd; | |
2870 | |
2871 options[i++].optionString = wrt; // Fill in option | |
2872 while (*rd != 0 && !isspace(*rd)) { // unquoted strings terminate with a space or NULL | |
2873 if (*rd == '\'' || *rd == '"') { // handle a quoted string | |
2874 int quote = *rd; // matching quote to look for | |
2875 rd++; // don't copy open quote | |
2876 while (*rd != quote) { // include everything (even spaces) up until quote | |
2877 if (*rd == 0) { // string termination means unmatched string | |
2878 jio_fprintf(defaultStream::error_stream(), | |
2879 "Unmatched quote in %s\n", name); | |
2880 return JNI_ERR; | |
2881 } | |
2882 *wrt++ = *rd++; // copy to option string | |
2883 } | |
2884 rd++; // don't copy close quote | |
2885 } else { | |
2886 *wrt++ = *rd++; // copy to option string | |
2887 } | |
2888 } | |
2889 // Need to check if we're done before writing a NULL, | |
2890 // because the write could be to the byte that rd is pointing to. | |
2891 if (*rd++ == 0) { | |
2892 *wrt = 0; | |
2893 break; | |
2894 } | |
2895 *wrt = 0; // Zero terminate option | |
2896 } | |
2897 // Construct JavaVMInitArgs structure and parse as if it was part of the command line | |
2898 JavaVMInitArgs vm_args; | |
2899 vm_args.version = JNI_VERSION_1_2; | |
2900 vm_args.options = options; | |
2901 vm_args.nOptions = i; | |
564 | 2902 vm_args.ignoreUnrecognized = IgnoreUnrecognizedVMOptions; |
0 | 2903 |
2904 if (PrintVMOptions) { | |
2905 const char* tail; | |
2906 for (int i = 0; i < vm_args.nOptions; i++) { | |
2907 const JavaVMOption *option = vm_args.options + i; | |
2908 if (match_option(option, "-XX:", &tail)) { | |
2909 logOption(tail); | |
2910 } | |
2911 } | |
2912 } | |
2913 | |
2914 return(parse_each_vm_init_arg(&vm_args, scp_p, scp_assembly_required_p, ENVIRON_VAR)); | |
2915 } | |
2916 return JNI_OK; | |
2917 } | |
2918 | |
2362
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2919 void Arguments::set_shared_spaces_flags() { |
2378 | 2920 const bool must_share = DumpSharedSpaces || RequireSharedSpaces; |
2921 const bool might_share = must_share || UseSharedSpaces; | |
2922 | |
2923 // The string table is part of the shared archive so the size must match. | |
2924 if (!FLAG_IS_DEFAULT(StringTableSize)) { | |
2925 // Disable sharing. | |
2926 if (must_share) { | |
2927 warning("disabling shared archive %s because of non-default " | |
2928 "StringTableSize", DumpSharedSpaces ? "creation" : "use"); | |
2929 } | |
2930 if (might_share) { | |
2931 FLAG_SET_DEFAULT(DumpSharedSpaces, false); | |
2932 FLAG_SET_DEFAULT(RequireSharedSpaces, false); | |
2933 FLAG_SET_DEFAULT(UseSharedSpaces, false); | |
2934 } | |
2935 return; | |
2936 } | |
2937 | |
2362
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2938 // Check whether class data sharing settings conflict with GC, compressed oops |
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2939 // or page size, and fix them up. Explicit sharing options override other |
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2940 // settings. |
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2941 const bool cannot_share = UseConcMarkSweepGC || CMSIncrementalMode || |
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2942 UseG1GC || UseParNewGC || UseParallelGC || UseParallelOldGC || |
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2943 UseCompressedOops || UseLargePages && FLAG_IS_CMDLINE(UseLargePages); |
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2944 if (cannot_share) { |
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2945 if (must_share) { |
2378 | 2946 warning("selecting serial gc and disabling large pages %s" |
2947 "because of %s", "" LP64_ONLY("and compressed oops "), | |
2948 DumpSharedSpaces ? "-Xshare:dump" : "-Xshare:on"); | |
2949 force_serial_gc(); | |
2950 FLAG_SET_CMDLINE(bool, UseLargePages, false); | |
2951 LP64_ONLY(FLAG_SET_CMDLINE(bool, UseCompressedOops, false)); | |
2362
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2952 } else { |
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2953 if (UseSharedSpaces && Verbose) { |
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2954 warning("turning off use of shared archive because of " |
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2955 "choice of garbage collector or large pages"); |
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2956 } |
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2957 no_shared_spaces(); |
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2958 } |
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2959 } else if (UseLargePages && might_share) { |
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2960 // Disable large pages to allow shared spaces. This is sub-optimal, since |
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2961 // there may not even be a shared archive to use. |
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2962 FLAG_SET_DEFAULT(UseLargePages, false); |
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2963 } |
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2964 } |
1891
9de67bf4244d
6996136: VM crash in src/share/vm/runtime/virtualspace.cpp:424
iveresov
parents:
1890
diff
changeset
|
2965 |
3797
eb94b7226b7a
7061192: option handling adjustments for oracle and embedded builds
jcoomes
parents:
3769
diff
changeset
|
2966 // Disable options not supported in this release, with a warning if they |
eb94b7226b7a
7061192: option handling adjustments for oracle and embedded builds
jcoomes
parents:
3769
diff
changeset
|
2967 // were explicitly requested on the command-line |
eb94b7226b7a
7061192: option handling adjustments for oracle and embedded builds
jcoomes
parents:
3769
diff
changeset
|
2968 #define UNSUPPORTED_OPTION(opt, description) \ |
eb94b7226b7a
7061192: option handling adjustments for oracle and embedded builds
jcoomes
parents:
3769
diff
changeset
|
2969 do { \ |
eb94b7226b7a
7061192: option handling adjustments for oracle and embedded builds
jcoomes
parents:
3769
diff
changeset
|
2970 if (opt) { \ |
eb94b7226b7a
7061192: option handling adjustments for oracle and embedded builds
jcoomes
parents:
3769
diff
changeset
|
2971 if (FLAG_IS_CMDLINE(opt)) { \ |
eb94b7226b7a
7061192: option handling adjustments for oracle and embedded builds
jcoomes
parents:
3769
diff
changeset
|
2972 warning(description " is disabled in this release."); \ |
eb94b7226b7a
7061192: option handling adjustments for oracle and embedded builds
jcoomes
parents:
3769
diff
changeset
|
2973 } \ |
eb94b7226b7a
7061192: option handling adjustments for oracle and embedded builds
jcoomes
parents:
3769
diff
changeset
|
2974 FLAG_SET_DEFAULT(opt, false); \ |
eb94b7226b7a
7061192: option handling adjustments for oracle and embedded builds
jcoomes
parents:
3769
diff
changeset
|
2975 } \ |
eb94b7226b7a
7061192: option handling adjustments for oracle and embedded builds
jcoomes
parents:
3769
diff
changeset
|
2976 } while(0) |
eb94b7226b7a
7061192: option handling adjustments for oracle and embedded builds
jcoomes
parents:
3769
diff
changeset
|
2977 |
0 | 2978 // Parse entry point called from JNI_CreateJavaVM |
2979 | |
2980 jint Arguments::parse(const JavaVMInitArgs* args) { | |
2981 | |
2982 // Sharing support | |
2983 // Construct the path to the archive | |
2984 char jvm_path[JVM_MAXPATHLEN]; | |
2985 os::jvm_path(jvm_path, sizeof(jvm_path)); | |
2986 #ifdef TIERED | |
2987 if (strstr(jvm_path, "client") != NULL) { | |
2988 force_client_mode = true; | |
2989 } | |
2990 #endif // TIERED | |
2991 char *end = strrchr(jvm_path, *os::file_separator()); | |
2992 if (end != NULL) *end = '\0'; | |
2993 char *shared_archive_path = NEW_C_HEAP_ARRAY(char, strlen(jvm_path) + | |
2994 strlen(os::file_separator()) + 20); | |
2995 if (shared_archive_path == NULL) return JNI_ENOMEM; | |
2996 strcpy(shared_archive_path, jvm_path); | |
2997 strcat(shared_archive_path, os::file_separator()); | |
2998 strcat(shared_archive_path, "classes"); | |
2999 DEBUG_ONLY(strcat(shared_archive_path, "_g");) | |
3000 strcat(shared_archive_path, ".jsa"); | |
3001 SharedArchivePath = shared_archive_path; | |
3002 | |
3003 // Remaining part of option string | |
3004 const char* tail; | |
3005 | |
3006 // If flag "-XX:Flags=flags-file" is used it will be the first option to be processed. | |
3007 bool settings_file_specified = false; | |
564 | 3008 const char* flags_file; |
0 | 3009 int index; |
3010 for (index = 0; index < args->nOptions; index++) { | |
3011 const JavaVMOption *option = args->options + index; | |
3012 if (match_option(option, "-XX:Flags=", &tail)) { | |
564 | 3013 flags_file = tail; |
0 | 3014 settings_file_specified = true; |
3015 } | |
3016 if (match_option(option, "-XX:+PrintVMOptions", &tail)) { | |
3017 PrintVMOptions = true; | |
3018 } | |
253
b0fe4deeb9fb
6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.")
kvn
parents:
196
diff
changeset
|
3019 if (match_option(option, "-XX:-PrintVMOptions", &tail)) { |
b0fe4deeb9fb
6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.")
kvn
parents:
196
diff
changeset
|
3020 PrintVMOptions = false; |
b0fe4deeb9fb
6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.")
kvn
parents:
196
diff
changeset
|
3021 } |
564 | 3022 if (match_option(option, "-XX:+IgnoreUnrecognizedVMOptions", &tail)) { |
3023 IgnoreUnrecognizedVMOptions = true; | |
3024 } | |
3025 if (match_option(option, "-XX:-IgnoreUnrecognizedVMOptions", &tail)) { | |
3026 IgnoreUnrecognizedVMOptions = false; | |
3027 } | |
1150 | 3028 if (match_option(option, "-XX:+PrintFlagsInitial", &tail)) { |
3029 CommandLineFlags::printFlags(); | |
3030 vm_exit(0); | |
3031 } | |
1768
6ee479178066
6979444: add command line option to print command line flags descriptions
ikrylov
parents:
1745
diff
changeset
|
3032 |
6ee479178066
6979444: add command line option to print command line flags descriptions
ikrylov
parents:
1745
diff
changeset
|
3033 #ifndef PRODUCT |
6ee479178066
6979444: add command line option to print command line flags descriptions
ikrylov
parents:
1745
diff
changeset
|
3034 if (match_option(option, "-XX:+PrintFlagsWithComments", &tail)) { |
6ee479178066
6979444: add command line option to print command line flags descriptions
ikrylov
parents:
1745
diff
changeset
|
3035 CommandLineFlags::printFlags(true); |
6ee479178066
6979444: add command line option to print command line flags descriptions
ikrylov
parents:
1745
diff
changeset
|
3036 vm_exit(0); |
6ee479178066
6979444: add command line option to print command line flags descriptions
ikrylov
parents:
1745
diff
changeset
|
3037 } |
6ee479178066
6979444: add command line option to print command line flags descriptions
ikrylov
parents:
1745
diff
changeset
|
3038 #endif |
564 | 3039 } |
3040 | |
3041 if (IgnoreUnrecognizedVMOptions) { | |
3042 // uncast const to modify the flag args->ignoreUnrecognized | |
3043 *(jboolean*)(&args->ignoreUnrecognized) = true; | |
3044 } | |
3045 | |
3046 // Parse specified settings file | |
3047 if (settings_file_specified) { | |
3048 if (!process_settings_file(flags_file, true, args->ignoreUnrecognized)) { | |
3049 return JNI_EINVAL; | |
3050 } | |
0 | 3051 } |
3052 | |
3053 // Parse default .hotspotrc settings file | |
3054 if (!settings_file_specified) { | |
3055 if (!process_settings_file(".hotspotrc", false, args->ignoreUnrecognized)) { | |
3056 return JNI_EINVAL; | |
3057 } | |
3058 } | |
3059 | |
3060 if (PrintVMOptions) { | |
3061 for (index = 0; index < args->nOptions; index++) { | |
3062 const JavaVMOption *option = args->options + index; | |
3063 if (match_option(option, "-XX:", &tail)) { | |
3064 logOption(tail); | |
3065 } | |
3066 } | |
3067 } | |
3068 | |
3069 // Parse JavaVMInitArgs structure passed in, as well as JAVA_TOOL_OPTIONS and _JAVA_OPTIONS | |
3070 jint result = parse_vm_init_args(args); | |
3071 if (result != JNI_OK) { | |
3072 return result; | |
3073 } | |
3074 | |
3797
eb94b7226b7a
7061192: option handling adjustments for oracle and embedded builds
jcoomes
parents:
3769
diff
changeset
|
3075 #ifdef JAVASE_EMBEDDED |
eb94b7226b7a
7061192: option handling adjustments for oracle and embedded builds
jcoomes
parents:
3769
diff
changeset
|
3076 UNSUPPORTED_OPTION(UseG1GC, "G1 GC"); |
eb94b7226b7a
7061192: option handling adjustments for oracle and embedded builds
jcoomes
parents:
3769
diff
changeset
|
3077 #endif |
eb94b7226b7a
7061192: option handling adjustments for oracle and embedded builds
jcoomes
parents:
3769
diff
changeset
|
3078 |
0 | 3079 #ifndef PRODUCT |
3080 if (TraceBytecodesAt != 0) { | |
3081 TraceBytecodes = true; | |
3082 } | |
3083 if (CountCompiledCalls) { | |
3084 if (UseCounterDecay) { | |
3085 warning("UseCounterDecay disabled because CountCalls is set"); | |
3086 UseCounterDecay = false; | |
3087 } | |
3088 } | |
3089 #endif // PRODUCT | |
3090 | |
2416
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
3091 // Transitional |
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
3092 if (EnableMethodHandles || AnonymousClasses) { |
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
3093 if (!EnableInvokeDynamic && !FLAG_IS_DEFAULT(EnableInvokeDynamic)) { |
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
3094 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
|
3095 } else { |
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
3096 EnableInvokeDynamic = true; |
726
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
712
diff
changeset
|
3097 } |
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
712
diff
changeset
|
3098 } |
2416
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
3099 |
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
3100 // 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
|
3101 if (!JDK_Version::is_gte_jdk17x_version()) { |
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
3102 if (EnableInvokeDynamic) { |
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
3103 if (!FLAG_IS_DEFAULT(EnableInvokeDynamic)) { |
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
3104 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
|
3105 } |
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
3106 EnableInvokeDynamic = false; |
710 | 3107 } |
3108 } | |
2416
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
3109 |
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
3110 if (EnableInvokeDynamic && ScavengeRootsInCode == 0) { |
989
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
932
diff
changeset
|
3111 if (!FLAG_IS_DEFAULT(ScavengeRootsInCode)) { |
2416
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
3112 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
|
3113 } |
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
932
diff
changeset
|
3114 ScavengeRootsInCode = 1; |
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
932
diff
changeset
|
3115 } |
2376
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
never
parents:
2370
diff
changeset
|
3116 if (!JavaObjectsInPerm && ScavengeRootsInCode == 0) { |
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
never
parents:
2370
diff
changeset
|
3117 if (!FLAG_IS_DEFAULT(ScavengeRootsInCode)) { |
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
never
parents:
2370
diff
changeset
|
3118 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
|
3119 } |
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
never
parents:
2370
diff
changeset
|
3120 ScavengeRootsInCode = 1; |
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
never
parents:
2370
diff
changeset
|
3121 } |
710 | 3122 |
0 | 3123 if (PrintGCDetails) { |
3124 // Turn on -verbose:gc options as well | |
3125 PrintGC = true; | |
3126 } | |
3127 | |
1571
2d127394260e
6916623: Align object to 16 bytes to use Compressed Oops with java heap up to 64Gb
kvn
parents:
1506
diff
changeset
|
3128 // 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
|
3129 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
|
3130 |
0 | 3131 #ifdef SERIALGC |
1064 | 3132 force_serial_gc(); |
0 | 3133 #endif // SERIALGC |
3134 #ifdef KERNEL | |
3135 no_shared_spaces(); | |
3136 #endif // KERNEL | |
3137 | |
3138 // Set flags based on ergonomics. | |
3139 set_ergonomics_flags(); | |
3140 | |
2362
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
3141 set_shared_spaces_flags(); |
1135
e66fd840cb6b
6893081: method handle & invokedynamic code needs additional cleanup (post 6815692, 6858164)
twisti
parents:
1131
diff
changeset
|
3142 |
10
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
3143 // Check the GC selections again. |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
3144 if (!check_gc_consistency()) { |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
3145 return JNI_EINVAL; |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
3146 } |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
3147 |
1783 | 3148 if (TieredCompilation) { |
3149 set_tiered_flags(); | |
3150 } else { | |
3151 // Check if the policy is valid. Policies 0 and 1 are valid for non-tiered setup. | |
3152 if (CompilationPolicyChoice >= 2) { | |
3153 vm_exit_during_initialization( | |
3154 "Incompatible compilation policy selected", NULL); | |
3155 } | |
3156 } | |
3157 | |
1145
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1074
diff
changeset
|
3158 #ifndef KERNEL |
2368
dde920245681
6896099: Integrate CMS heap ergo with default heap sizing ergo
ysr
parents:
2366
diff
changeset
|
3159 // Set heap size based on available physical memory |
dde920245681
6896099: Integrate CMS heap ergo with default heap sizing ergo
ysr
parents:
2366
diff
changeset
|
3160 set_heap_size(); |
dde920245681
6896099: Integrate CMS heap ergo with default heap sizing ergo
ysr
parents:
2366
diff
changeset
|
3161 // Set per-collector flags |
dde920245681
6896099: Integrate CMS heap ergo with default heap sizing ergo
ysr
parents:
2366
diff
changeset
|
3162 if (UseParallelGC || UseParallelOldGC) { |
dde920245681
6896099: Integrate CMS heap ergo with default heap sizing ergo
ysr
parents:
2366
diff
changeset
|
3163 set_parallel_gc_flags(); |
dde920245681
6896099: Integrate CMS heap ergo with default heap sizing ergo
ysr
parents:
2366
diff
changeset
|
3164 } 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
|
3165 set_cms_and_parnew_gc_flags(); |
2368
dde920245681
6896099: Integrate CMS heap ergo with default heap sizing ergo
ysr
parents:
2366
diff
changeset
|
3166 } 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
|
3167 set_parnew_gc_flags(); |
dde920245681
6896099: Integrate CMS heap ergo with default heap sizing ergo
ysr
parents:
2366
diff
changeset
|
3168 } else if (UseG1GC) { |
dde920245681
6896099: Integrate CMS heap ergo with default heap sizing ergo
ysr
parents:
2366
diff
changeset
|
3169 set_g1_gc_flags(); |
342
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
135
diff
changeset
|
3170 } |
1145
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1074
diff
changeset
|
3171 #endif // KERNEL |
10
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
3172 |
0 | 3173 #ifdef SERIALGC |
3174 assert(verify_serial_gc_flags(), "SerialGC unset"); | |
3175 #endif // SERIALGC | |
3176 | |
3177 // Set bytecode rewriting flags | |
3178 set_bytecode_flags(); | |
3179 | |
3180 // Set flags if Aggressive optimization flags (-XX:+AggressiveOpts) enabled. | |
3181 set_aggressive_opts_flags(); | |
3182 | |
2239
c08677f98289
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|
3183 // Turn off biased locking for locking debug mode flags, |
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3184 // which are subtlely different from each other but neither works with |
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|
3185 // biased locking. |
2331 | 3186 if (UseHeavyMonitors |
3187 #ifdef COMPILER1 | |
3188 || !UseFastLocking | |
3189 #endif // COMPILER1 | |
3190 ) { | |
2239
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3191 if (!FLAG_IS_DEFAULT(UseBiasedLocking) && UseBiasedLocking) { |
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3192 // flag set to true on command line; warn the user that they |
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|
3193 // can't enable biased locking here |
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|
3194 warning("Biased Locking is not supported with locking debug flags" |
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|
3195 "; ignoring UseBiasedLocking flag." ); |
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|
3196 } |
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|
3197 UseBiasedLocking = false; |
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|
3198 } |
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|
3199 |
0 | 3200 #ifdef CC_INTERP |
1131 | 3201 // Clear flags not supported by the C++ interpreter |
3202 FLAG_SET_DEFAULT(ProfileInterpreter, false); | |
0 | 3203 FLAG_SET_DEFAULT(UseBiasedLocking, false); |
1131 | 3204 LP64_ONLY(FLAG_SET_DEFAULT(UseCompressedOops, false)); |
3205 #endif // CC_INTERP | |
3206 | |
420
a1980da045cc
6462850: generate biased locking code in C2 ideal graph
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|
3207 #ifdef COMPILER2 |
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changeset
|
3208 if (!UseBiasedLocking || EmitSync != 0) { |
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|
3209 UseOptoBiasInlining = false; |
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|
3210 } |
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|
3211 #endif |
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|
3212 |
1155
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6912062: disassembler plugin needs to produce symbolic information in product mode
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|
3213 if (PrintAssembly && FLAG_IS_DEFAULT(DebugNonSafepoints)) { |
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6912062: disassembler plugin needs to produce symbolic information in product mode
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|
3214 warning("PrintAssembly is enabled; turning on DebugNonSafepoints to gain additional output"); |
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6912062: disassembler plugin needs to produce symbolic information in product mode
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|
3215 DebugNonSafepoints = true; |
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|
3216 } |
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|
3217 |
1188
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
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|
3218 #ifndef PRODUCT |
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3219 if (CompileTheWorld) { |
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6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
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3220 // Force NmethodSweeper to sweep whole CodeCache each time. |
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3221 if (FLAG_IS_DEFAULT(NmethodSweepFraction)) { |
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6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
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3222 NmethodSweepFraction = 1; |
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|
3223 } |
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|
3224 } |
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|
3225 #endif |
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|
3226 |
0 | 3227 if (PrintCommandLineFlags) { |
3228 CommandLineFlags::printSetFlags(); | |
3229 } | |
3230 | |
1681
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
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|
3231 // Apply CPU specific policy for the BiasedLocking |
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|
3232 if (UseBiasedLocking) { |
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|
3233 if (!VM_Version::use_biased_locking() && |
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changeset
|
3234 !(FLAG_IS_CMDLINE(UseBiasedLocking))) { |
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|
3235 UseBiasedLocking = false; |
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|
3236 } |
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|
3237 } |
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|
3238 |
2302
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
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diff
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3239 // set PauseAtExit if the gamma launcher was used and a debugger is attached |
da091bb67459
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|
3240 // but only if not already set on the commandline |
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|
3241 if (Arguments::created_by_gamma_launcher() && os::is_debugger_attached()) { |
da091bb67459
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|
3242 bool set = false; |
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diff
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|
3243 CommandLineFlags::wasSetOnCmdline("PauseAtExit", &set); |
da091bb67459
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diff
changeset
|
3244 if (!set) { |
da091bb67459
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diff
changeset
|
3245 FLAG_SET_DEFAULT(PauseAtExit, true); |
da091bb67459
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diff
changeset
|
3246 } |
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|
3247 } |
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|
3248 |
0 | 3249 return JNI_OK; |
3250 } | |
3251 | |
3252 int Arguments::PropertyList_count(SystemProperty* pl) { | |
3253 int count = 0; | |
3254 while(pl != NULL) { | |
3255 count++; | |
3256 pl = pl->next(); | |
3257 } | |
3258 return count; | |
3259 } | |
3260 | |
3261 const char* Arguments::PropertyList_get_value(SystemProperty *pl, const char* key) { | |
3262 assert(key != NULL, "just checking"); | |
3263 SystemProperty* prop; | |
3264 for (prop = pl; prop != NULL; prop = prop->next()) { | |
3265 if (strcmp(key, prop->key()) == 0) return prop->value(); | |
3266 } | |
3267 return NULL; | |
3268 } | |
3269 | |
3270 const char* Arguments::PropertyList_get_key_at(SystemProperty *pl, int index) { | |
3271 int count = 0; | |
3272 const char* ret_val = NULL; | |
3273 | |
3274 while(pl != NULL) { | |
3275 if(count >= index) { | |
3276 ret_val = pl->key(); | |
3277 break; | |
3278 } | |
3279 count++; | |
3280 pl = pl->next(); | |
3281 } | |
3282 | |
3283 return ret_val; | |
3284 } | |
3285 | |
3286 char* Arguments::PropertyList_get_value_at(SystemProperty* pl, int index) { | |
3287 int count = 0; | |
3288 char* ret_val = NULL; | |
3289 | |
3290 while(pl != NULL) { | |
3291 if(count >= index) { | |
3292 ret_val = pl->value(); | |
3293 break; | |
3294 } | |
3295 count++; | |
3296 pl = pl->next(); | |
3297 } | |
3298 | |
3299 return ret_val; | |
3300 } | |
3301 | |
3302 void Arguments::PropertyList_add(SystemProperty** plist, SystemProperty *new_p) { | |
3303 SystemProperty* p = *plist; | |
3304 if (p == NULL) { | |
3305 *plist = new_p; | |
3306 } else { | |
3307 while (p->next() != NULL) { | |
3308 p = p->next(); | |
3309 } | |
3310 p->set_next(new_p); | |
3311 } | |
3312 } | |
3313 | |
3314 void Arguments::PropertyList_add(SystemProperty** plist, const char* k, char* v) { | |
3315 if (plist == NULL) | |
3316 return; | |
3317 | |
3318 SystemProperty* new_p = new SystemProperty(k, v, true); | |
3319 PropertyList_add(plist, new_p); | |
3320 } | |
3321 | |
3322 // This add maintains unique property key in the list. | |
691 | 3323 void Arguments::PropertyList_unique_add(SystemProperty** plist, const char* k, char* v, jboolean append) { |
0 | 3324 if (plist == NULL) |
3325 return; | |
3326 | |
3327 // If property key exist then update with new value. | |
3328 SystemProperty* prop; | |
3329 for (prop = *plist; prop != NULL; prop = prop->next()) { | |
3330 if (strcmp(k, prop->key()) == 0) { | |
691 | 3331 if (append) { |
3332 prop->append_value(v); | |
3333 } else { | |
3334 prop->set_value(v); | |
3335 } | |
0 | 3336 return; |
3337 } | |
3338 } | |
3339 | |
3340 PropertyList_add(plist, k, v); | |
3341 } | |
3342 | |
3343 #ifdef KERNEL | |
3344 char *Arguments::get_kernel_properties() { | |
3345 // Find properties starting with kernel and append them to string | |
3346 // We need to find out how long they are first because the URL's that they | |
3347 // might point to could get long. | |
3348 int length = 0; | |
3349 SystemProperty* prop; | |
3350 for (prop = _system_properties; prop != NULL; prop = prop->next()) { | |
3351 if (strncmp(prop->key(), "kernel.", 7 ) == 0) { | |
3352 length += (strlen(prop->key()) + strlen(prop->value()) + 5); // "-D =" | |
3353 } | |
3354 } | |
3355 // Add one for null terminator. | |
3356 char *props = AllocateHeap(length + 1, "get_kernel_properties"); | |
3357 if (length != 0) { | |
3358 int pos = 0; | |
3359 for (prop = _system_properties; prop != NULL; prop = prop->next()) { | |
3360 if (strncmp(prop->key(), "kernel.", 7 ) == 0) { | |
3361 jio_snprintf(&props[pos], length-pos, | |
3362 "-D%s=%s ", prop->key(), prop->value()); | |
3363 pos = strlen(props); | |
3364 } | |
3365 } | |
3366 } | |
3367 // null terminate props in case of null | |
3368 props[length] = '\0'; | |
3369 return props; | |
3370 } | |
3371 #endif // KERNEL | |
3372 | |
3373 // Copies src into buf, replacing "%%" with "%" and "%p" with pid | |
3374 // Returns true if all of the source pointed by src has been copied over to | |
3375 // the destination buffer pointed by buf. Otherwise, returns false. | |
3376 // Notes: | |
3377 // 1. If the length (buflen) of the destination buffer excluding the | |
3378 // NULL terminator character is not long enough for holding the expanded | |
3379 // pid characters, it also returns false instead of returning the partially | |
3380 // expanded one. | |
3381 // 2. The passed in "buflen" should be large enough to hold the null terminator. | |
3382 bool Arguments::copy_expand_pid(const char* src, size_t srclen, | |
3383 char* buf, size_t buflen) { | |
3384 const char* p = src; | |
3385 char* b = buf; | |
3386 const char* src_end = &src[srclen]; | |
3387 char* buf_end = &buf[buflen - 1]; | |
3388 | |
3389 while (p < src_end && b < buf_end) { | |
3390 if (*p == '%') { | |
3391 switch (*(++p)) { | |
3392 case '%': // "%%" ==> "%" | |
3393 *b++ = *p++; | |
3394 break; | |
3395 case 'p': { // "%p" ==> current process id | |
3396 // buf_end points to the character before the last character so | |
3397 // that we could write '\0' to the end of the buffer. | |
3398 size_t buf_sz = buf_end - b + 1; | |
3399 int ret = jio_snprintf(b, buf_sz, "%d", os::current_process_id()); | |
3400 | |
3401 // if jio_snprintf fails or the buffer is not long enough to hold | |
3402 // the expanded pid, returns false. | |
3403 if (ret < 0 || ret >= (int)buf_sz) { | |
3404 return false; | |
3405 } else { | |
3406 b += ret; | |
3407 assert(*b == '\0', "fail in copy_expand_pid"); | |
3408 if (p == src_end && b == buf_end + 1) { | |
3409 // reach the end of the buffer. | |
3410 return true; | |
3411 } | |
3412 } | |
3413 p++; | |
3414 break; | |
3415 } | |
3416 default : | |
3417 *b++ = '%'; | |
3418 } | |
3419 } else { | |
3420 *b++ = *p++; | |
3421 } | |
3422 } | |
3423 *b = '\0'; | |
3424 return (p == src_end); // return false if not all of the source was copied | |
3425 } |