Mercurial > hg > truffle
annotate src/share/vm/runtime/arguments.cpp @ 7961:baf7fac3167e
8006298: Specifying malformed JFR options (-XX:+FlightRecorderOptions) outputs non-sensical error
Summary: Change error messages for malformed options so the messages are more useful.
Reviewed-by: mikael, kvn, nloodin
author | hseigel |
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date | Fri, 01 Feb 2013 14:14:54 -0500 |
parents | 8b46b0196eb0 |
children | 10d5f25a7c67 |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #include "precompiled.hpp" |
26 #include "classfile/javaAssertions.hpp" | |
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27 #include "classfile/symbolTable.hpp" |
1972 | 28 #include "compiler/compilerOracle.hpp" |
29 #include "memory/allocation.inline.hpp" | |
30 #include "memory/cardTableRS.hpp" | |
31 #include "memory/referenceProcessor.hpp" | |
32 #include "memory/universe.inline.hpp" | |
33 #include "oops/oop.inline.hpp" | |
34 #include "prims/jvmtiExport.hpp" | |
35 #include "runtime/arguments.hpp" | |
36 #include "runtime/globals_extension.hpp" | |
37 #include "runtime/java.hpp" | |
38 #include "services/management.hpp" | |
6197 | 39 #include "services/memTracker.hpp" |
1972 | 40 #include "utilities/defaultStream.hpp" |
41 #include "utilities/taskqueue.hpp" | |
42 #ifdef TARGET_OS_FAMILY_linux | |
43 # include "os_linux.inline.hpp" | |
44 #endif | |
45 #ifdef TARGET_OS_FAMILY_solaris | |
46 # include "os_solaris.inline.hpp" | |
47 #endif | |
48 #ifdef TARGET_OS_FAMILY_windows | |
49 # include "os_windows.inline.hpp" | |
50 #endif | |
3960 | 51 #ifdef TARGET_OS_FAMILY_bsd |
52 # include "os_bsd.inline.hpp" | |
53 #endif | |
1972 | 54 #ifndef SERIALGC |
55 #include "gc_implementation/concurrentMarkSweep/compactibleFreeListSpace.hpp" | |
56 #endif | |
0 | 57 |
2474 | 58 // Note: This is a special bug reporting site for the JVM |
59 #define DEFAULT_VENDOR_URL_BUG "http://bugreport.sun.com/bugreport/crash.jsp" | |
0 | 60 #define DEFAULT_JAVA_LAUNCHER "generic" |
61 | |
62 char** Arguments::_jvm_flags_array = NULL; | |
63 int Arguments::_num_jvm_flags = 0; | |
64 char** Arguments::_jvm_args_array = NULL; | |
65 int Arguments::_num_jvm_args = 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; | |
103 | |
104 char* Arguments::_meta_index_path = NULL; | |
105 char* Arguments::_meta_index_dir = NULL; | |
106 | |
107 // Check if head of 'option' matches 'name', and sets 'tail' remaining part of option string | |
108 | |
109 static bool match_option(const JavaVMOption *option, const char* name, | |
110 const char** tail) { | |
111 int len = (int)strlen(name); | |
112 if (strncmp(option->optionString, name, len) == 0) { | |
113 *tail = option->optionString + len; | |
114 return true; | |
115 } else { | |
116 return false; | |
117 } | |
118 } | |
119 | |
120 static void logOption(const char* opt) { | |
121 if (PrintVMOptions) { | |
122 jio_fprintf(defaultStream::output_stream(), "VM option '%s'\n", opt); | |
123 } | |
124 } | |
125 | |
126 // Process java launcher properties. | |
127 void Arguments::process_sun_java_launcher_properties(JavaVMInitArgs* args) { | |
128 // See if sun.java.launcher or sun.java.launcher.pid is defined. | |
129 // Must do this before setting up other system properties, | |
130 // as some of them may depend on launcher type. | |
131 for (int index = 0; index < args->nOptions; index++) { | |
132 const JavaVMOption* option = args->options + index; | |
133 const char* tail; | |
134 | |
135 if (match_option(option, "-Dsun.java.launcher=", &tail)) { | |
136 process_java_launcher_argument(tail, option->extraInfo); | |
137 continue; | |
138 } | |
139 if (match_option(option, "-Dsun.java.launcher.pid=", &tail)) { | |
140 _sun_java_launcher_pid = atoi(tail); | |
141 continue; | |
142 } | |
143 } | |
144 } | |
145 | |
146 // Initialize system properties key and value. | |
147 void Arguments::init_system_properties() { | |
148 | |
149 PropertyList_add(&_system_properties, new SystemProperty("java.vm.specification.name", | |
150 "Java Virtual Machine Specification", false)); | |
151 PropertyList_add(&_system_properties, new SystemProperty("java.vm.version", VM_Version::vm_release(), false)); | |
152 PropertyList_add(&_system_properties, new SystemProperty("java.vm.name", VM_Version::vm_name(), false)); | |
153 PropertyList_add(&_system_properties, new SystemProperty("java.vm.info", VM_Version::vm_info_string(), true)); | |
154 | |
155 // following are JVMTI agent writeable properties. | |
156 // Properties values are set to NULL and they are | |
157 // os specific they are initialized in os::init_system_properties_values(). | |
158 _java_ext_dirs = new SystemProperty("java.ext.dirs", NULL, true); | |
159 _java_endorsed_dirs = new SystemProperty("java.endorsed.dirs", NULL, true); | |
160 _sun_boot_library_path = new SystemProperty("sun.boot.library.path", NULL, true); | |
161 _java_library_path = new SystemProperty("java.library.path", NULL, true); | |
162 _java_home = new SystemProperty("java.home", NULL, true); | |
163 _sun_boot_class_path = new SystemProperty("sun.boot.class.path", NULL, true); | |
164 | |
165 _java_class_path = new SystemProperty("java.class.path", "", true); | |
166 | |
167 // Add to System Property list. | |
168 PropertyList_add(&_system_properties, _java_ext_dirs); | |
169 PropertyList_add(&_system_properties, _java_endorsed_dirs); | |
170 PropertyList_add(&_system_properties, _sun_boot_library_path); | |
171 PropertyList_add(&_system_properties, _java_library_path); | |
172 PropertyList_add(&_system_properties, _java_home); | |
173 PropertyList_add(&_system_properties, _java_class_path); | |
174 PropertyList_add(&_system_properties, _sun_boot_class_path); | |
175 | |
176 // Set OS specific system properties values | |
177 os::init_system_properties_values(); | |
178 } | |
179 | |
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180 |
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181 // Update/Initialize System properties after JDK version number is known |
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182 void Arguments::init_version_specific_system_properties() { |
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183 enum { bufsz = 16 }; |
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184 char buffer[bufsz]; |
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185 const char* spec_vendor = "Sun Microsystems Inc."; |
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186 uint32_t spec_version = 0; |
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187 |
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188 if (JDK_Version::is_gte_jdk17x_version()) { |
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189 spec_vendor = "Oracle Corporation"; |
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190 spec_version = JDK_Version::current().major_version(); |
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191 } |
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192 jio_snprintf(buffer, bufsz, "1." UINT32_FORMAT, spec_version); |
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193 |
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194 PropertyList_add(&_system_properties, |
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195 new SystemProperty("java.vm.specification.vendor", spec_vendor, false)); |
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196 PropertyList_add(&_system_properties, |
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197 new SystemProperty("java.vm.specification.version", buffer, false)); |
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198 PropertyList_add(&_system_properties, |
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199 new SystemProperty("java.vm.vendor", VM_Version::vm_vendor(), false)); |
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200 } |
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201 |
242 | 202 /** |
203 * Provide a slightly more user-friendly way of eliminating -XX flags. | |
204 * When a flag is eliminated, it can be added to this list in order to | |
205 * continue accepting this flag on the command-line, while issuing a warning | |
206 * and ignoring the value. Once the JDK version reaches the 'accept_until' | |
207 * limit, we flatly refuse to admit the existence of the flag. This allows | |
208 * a flag to die correctly over JDK releases using HSX. | |
209 */ | |
210 typedef struct { | |
211 const char* name; | |
212 JDK_Version obsoleted_in; // when the flag went away | |
213 JDK_Version accept_until; // which version to start denying the existence | |
214 } ObsoleteFlag; | |
0 | 215 |
242 | 216 static ObsoleteFlag obsolete_jvm_flags[] = { |
217 { "UseTrainGC", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
218 { "UseSpecialLargeObjectHandling", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
219 { "UseOversizedCarHandling", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
220 { "TraceCarAllocation", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
221 { "PrintTrainGCProcessingStats", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
222 { "LogOfCarSpaceSize", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
223 { "OversizedCarThreshold", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
224 { "MinTickInterval", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
225 { "DefaultTickInterval", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
226 { "MaxTickInterval", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
227 { "DelayTickAdjustment", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
228 { "ProcessingToTenuringRatio", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
229 { "MinTrainLength", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
230 { "AppendRatio", JDK_Version::jdk_update(6,10), JDK_Version::jdk(7) }, | |
1064 | 231 { "DefaultMaxRAM", JDK_Version::jdk_update(6,18), JDK_Version::jdk(7) }, |
232 { "DefaultInitialRAMFraction", | |
233 JDK_Version::jdk_update(6,18), JDK_Version::jdk(7) }, | |
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234 { "UseDepthFirstScavengeOrder", |
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235 JDK_Version::jdk_update(6,22), JDK_Version::jdk(7) }, |
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236 { "HandlePromotionFailure", |
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237 JDK_Version::jdk_update(6,24), JDK_Version::jdk(8) }, |
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238 { "MaxLiveObjectEvacuationRatio", |
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239 JDK_Version::jdk_update(6,24), JDK_Version::jdk(8) }, |
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240 { "ForceSharedSpaces", JDK_Version::jdk_update(6,25), JDK_Version::jdk(8) }, |
3251
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241 { "UseParallelOldGCCompacting", |
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242 JDK_Version::jdk_update(6,27), JDK_Version::jdk(8) }, |
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243 { "UseParallelDensePrefixUpdate", |
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244 JDK_Version::jdk_update(6,27), JDK_Version::jdk(8) }, |
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245 { "UseParallelOldGCDensePrefix", |
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246 JDK_Version::jdk_update(6,27), JDK_Version::jdk(8) }, |
2460 | 247 { "AllowTransitionalJSR292", JDK_Version::jdk(7), JDK_Version::jdk(8) }, |
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248 { "UseCompressedStrings", JDK_Version::jdk(7), JDK_Version::jdk(8) }, |
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249 { "CMSPermGenPrecleaningEnabled", JDK_Version::jdk(8), JDK_Version::jdk(9) }, |
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250 { "CMSTriggerPermRatio", JDK_Version::jdk(8), JDK_Version::jdk(9) }, |
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251 { "CMSInitiatingPermOccupancyFraction", JDK_Version::jdk(8), JDK_Version::jdk(9) }, |
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252 { "AdaptivePermSizeWeight", JDK_Version::jdk(8), JDK_Version::jdk(9) }, |
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253 { "PermGenPadding", JDK_Version::jdk(8), JDK_Version::jdk(9) }, |
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254 { "PermMarkSweepDeadRatio", JDK_Version::jdk(8), JDK_Version::jdk(9) }, |
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255 { "PermSize", JDK_Version::jdk(8), JDK_Version::jdk(9) }, |
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256 { "MaxPermSize", JDK_Version::jdk(8), JDK_Version::jdk(9) }, |
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257 { "MinPermHeapExpansion", JDK_Version::jdk(8), JDK_Version::jdk(9) }, |
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258 { "MaxPermHeapExpansion", JDK_Version::jdk(8), JDK_Version::jdk(9) }, |
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259 { "CMSRevisitStackSize", JDK_Version::jdk(8), JDK_Version::jdk(9) }, |
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260 { "PrintRevisitStats", JDK_Version::jdk(8), JDK_Version::jdk(9) }, |
6916 | 261 { "UseVectoredExceptions", JDK_Version::jdk(8), JDK_Version::jdk(9) }, |
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262 #ifdef PRODUCT |
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263 { "DesiredMethodLimit", |
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264 JDK_Version::jdk_update(7, 2), JDK_Version::jdk(8) }, |
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265 #endif // PRODUCT |
242 | 266 { NULL, JDK_Version(0), JDK_Version(0) } |
267 }; | |
268 | |
269 // Returns true if the flag is obsolete and fits into the range specified | |
270 // for being ignored. In the case that the flag is ignored, the 'version' | |
271 // value is filled in with the version number when the flag became | |
272 // obsolete so that that value can be displayed to the user. | |
273 bool Arguments::is_newly_obsolete(const char *s, JDK_Version* version) { | |
0 | 274 int i = 0; |
242 | 275 assert(version != NULL, "Must provide a version buffer"); |
276 while (obsolete_jvm_flags[i].name != NULL) { | |
277 const ObsoleteFlag& flag_status = obsolete_jvm_flags[i]; | |
0 | 278 // <flag>=xxx form |
279 // [-|+]<flag> form | |
242 | 280 if ((strncmp(flag_status.name, s, strlen(flag_status.name)) == 0) || |
0 | 281 ((s[0] == '+' || s[0] == '-') && |
242 | 282 (strncmp(flag_status.name, &s[1], strlen(flag_status.name)) == 0))) { |
283 if (JDK_Version::current().compare(flag_status.accept_until) == -1) { | |
284 *version = flag_status.obsoleted_in; | |
285 return true; | |
286 } | |
0 | 287 } |
288 i++; | |
289 } | |
290 return false; | |
291 } | |
292 | |
293 // Constructs the system class path (aka boot class path) from the following | |
294 // components, in order: | |
295 // | |
296 // prefix // from -Xbootclasspath/p:... | |
297 // endorsed // the expansion of -Djava.endorsed.dirs=... | |
298 // base // from os::get_system_properties() or -Xbootclasspath= | |
299 // suffix // from -Xbootclasspath/a:... | |
300 // | |
301 // java.endorsed.dirs is a list of directories; any jar or zip files in the | |
302 // directories are added to the sysclasspath just before the base. | |
303 // | |
304 // This could be AllStatic, but it isn't needed after argument processing is | |
305 // complete. | |
306 class SysClassPath: public StackObj { | |
307 public: | |
308 SysClassPath(const char* base); | |
309 ~SysClassPath(); | |
310 | |
311 inline void set_base(const char* base); | |
312 inline void add_prefix(const char* prefix); | |
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313 inline void add_suffix_to_prefix(const char* suffix); |
0 | 314 inline void add_suffix(const char* suffix); |
315 inline void reset_path(const char* base); | |
316 | |
317 // Expand the jar/zip files in each directory listed by the java.endorsed.dirs | |
318 // property. Must be called after all command-line arguments have been | |
319 // processed (in particular, -Djava.endorsed.dirs=...) and before calling | |
320 // combined_path(). | |
321 void expand_endorsed(); | |
322 | |
323 inline const char* get_base() const { return _items[_scp_base]; } | |
324 inline const char* get_prefix() const { return _items[_scp_prefix]; } | |
325 inline const char* get_suffix() const { return _items[_scp_suffix]; } | |
326 inline const char* get_endorsed() const { return _items[_scp_endorsed]; } | |
327 | |
328 // Combine all the components into a single c-heap-allocated string; caller | |
329 // must free the string if/when no longer needed. | |
330 char* combined_path(); | |
331 | |
332 private: | |
333 // Utility routines. | |
334 static char* add_to_path(const char* path, const char* str, bool prepend); | |
335 static char* add_jars_to_path(char* path, const char* directory); | |
336 | |
337 inline void reset_item_at(int index); | |
338 | |
339 // Array indices for the items that make up the sysclasspath. All except the | |
340 // base are allocated in the C heap and freed by this class. | |
341 enum { | |
342 _scp_prefix, // from -Xbootclasspath/p:... | |
343 _scp_endorsed, // the expansion of -Djava.endorsed.dirs=... | |
344 _scp_base, // the default sysclasspath | |
345 _scp_suffix, // from -Xbootclasspath/a:... | |
346 _scp_nitems // the number of items, must be last. | |
347 }; | |
348 | |
349 const char* _items[_scp_nitems]; | |
350 DEBUG_ONLY(bool _expansion_done;) | |
351 }; | |
352 | |
353 SysClassPath::SysClassPath(const char* base) { | |
354 memset(_items, 0, sizeof(_items)); | |
355 _items[_scp_base] = base; | |
356 DEBUG_ONLY(_expansion_done = false;) | |
357 } | |
358 | |
359 SysClassPath::~SysClassPath() { | |
360 // Free everything except the base. | |
361 for (int i = 0; i < _scp_nitems; ++i) { | |
362 if (i != _scp_base) reset_item_at(i); | |
363 } | |
364 DEBUG_ONLY(_expansion_done = false;) | |
365 } | |
366 | |
367 inline void SysClassPath::set_base(const char* base) { | |
368 _items[_scp_base] = base; | |
369 } | |
370 | |
371 inline void SysClassPath::add_prefix(const char* prefix) { | |
372 _items[_scp_prefix] = add_to_path(_items[_scp_prefix], prefix, true); | |
373 } | |
374 | |
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375 inline void SysClassPath::add_suffix_to_prefix(const char* suffix) { |
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376 _items[_scp_prefix] = add_to_path(_items[_scp_prefix], suffix, false); |
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377 } |
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378 |
0 | 379 inline void SysClassPath::add_suffix(const char* suffix) { |
380 _items[_scp_suffix] = add_to_path(_items[_scp_suffix], suffix, false); | |
381 } | |
382 | |
383 inline void SysClassPath::reset_item_at(int index) { | |
384 assert(index < _scp_nitems && index != _scp_base, "just checking"); | |
385 if (_items[index] != NULL) { | |
6197 | 386 FREE_C_HEAP_ARRAY(char, _items[index], mtInternal); |
0 | 387 _items[index] = NULL; |
388 } | |
389 } | |
390 | |
391 inline void SysClassPath::reset_path(const char* base) { | |
392 // Clear the prefix and suffix. | |
393 reset_item_at(_scp_prefix); | |
394 reset_item_at(_scp_suffix); | |
395 set_base(base); | |
396 } | |
397 | |
398 //------------------------------------------------------------------------------ | |
399 | |
400 void SysClassPath::expand_endorsed() { | |
401 assert(_items[_scp_endorsed] == NULL, "can only be called once."); | |
402 | |
403 const char* path = Arguments::get_property("java.endorsed.dirs"); | |
404 if (path == NULL) { | |
405 path = Arguments::get_endorsed_dir(); | |
406 assert(path != NULL, "no default for java.endorsed.dirs"); | |
407 } | |
408 | |
409 char* expanded_path = NULL; | |
410 const char separator = *os::path_separator(); | |
411 const char* const end = path + strlen(path); | |
412 while (path < end) { | |
413 const char* tmp_end = strchr(path, separator); | |
414 if (tmp_end == NULL) { | |
415 expanded_path = add_jars_to_path(expanded_path, path); | |
416 path = end; | |
417 } else { | |
6197 | 418 char* dirpath = NEW_C_HEAP_ARRAY(char, tmp_end - path + 1, mtInternal); |
0 | 419 memcpy(dirpath, path, tmp_end - path); |
420 dirpath[tmp_end - path] = '\0'; | |
421 expanded_path = add_jars_to_path(expanded_path, dirpath); | |
6197 | 422 FREE_C_HEAP_ARRAY(char, dirpath, mtInternal); |
0 | 423 path = tmp_end + 1; |
424 } | |
425 } | |
426 _items[_scp_endorsed] = expanded_path; | |
427 DEBUG_ONLY(_expansion_done = true;) | |
428 } | |
429 | |
430 // Combine the bootclasspath elements, some of which may be null, into a single | |
431 // c-heap-allocated string. | |
432 char* SysClassPath::combined_path() { | |
433 assert(_items[_scp_base] != NULL, "empty default sysclasspath"); | |
434 assert(_expansion_done, "must call expand_endorsed() first."); | |
435 | |
436 size_t lengths[_scp_nitems]; | |
437 size_t total_len = 0; | |
438 | |
439 const char separator = *os::path_separator(); | |
440 | |
441 // Get the lengths. | |
442 int i; | |
443 for (i = 0; i < _scp_nitems; ++i) { | |
444 if (_items[i] != NULL) { | |
445 lengths[i] = strlen(_items[i]); | |
446 // Include space for the separator char (or a NULL for the last item). | |
447 total_len += lengths[i] + 1; | |
448 } | |
449 } | |
450 assert(total_len > 0, "empty sysclasspath not allowed"); | |
451 | |
452 // Copy the _items to a single string. | |
6197 | 453 char* cp = NEW_C_HEAP_ARRAY(char, total_len, mtInternal); |
0 | 454 char* cp_tmp = cp; |
455 for (i = 0; i < _scp_nitems; ++i) { | |
456 if (_items[i] != NULL) { | |
457 memcpy(cp_tmp, _items[i], lengths[i]); | |
458 cp_tmp += lengths[i]; | |
459 *cp_tmp++ = separator; | |
460 } | |
461 } | |
462 *--cp_tmp = '\0'; // Replace the extra separator. | |
463 return cp; | |
464 } | |
465 | |
466 // Note: path must be c-heap-allocated (or NULL); it is freed if non-null. | |
467 char* | |
468 SysClassPath::add_to_path(const char* path, const char* str, bool prepend) { | |
469 char *cp; | |
470 | |
471 assert(str != NULL, "just checking"); | |
472 if (path == NULL) { | |
473 size_t len = strlen(str) + 1; | |
6197 | 474 cp = NEW_C_HEAP_ARRAY(char, len, mtInternal); |
0 | 475 memcpy(cp, str, len); // copy the trailing null |
476 } else { | |
477 const char separator = *os::path_separator(); | |
478 size_t old_len = strlen(path); | |
479 size_t str_len = strlen(str); | |
480 size_t len = old_len + str_len + 2; | |
481 | |
482 if (prepend) { | |
6197 | 483 cp = NEW_C_HEAP_ARRAY(char, len, mtInternal); |
0 | 484 char* cp_tmp = cp; |
485 memcpy(cp_tmp, str, str_len); | |
486 cp_tmp += str_len; | |
487 *cp_tmp = separator; | |
488 memcpy(++cp_tmp, path, old_len + 1); // copy the trailing null | |
6197 | 489 FREE_C_HEAP_ARRAY(char, path, mtInternal); |
0 | 490 } else { |
6197 | 491 cp = REALLOC_C_HEAP_ARRAY(char, path, len, mtInternal); |
0 | 492 char* cp_tmp = cp + old_len; |
493 *cp_tmp = separator; | |
494 memcpy(++cp_tmp, str, str_len + 1); // copy the trailing null | |
495 } | |
496 } | |
497 return cp; | |
498 } | |
499 | |
500 // Scan the directory and append any jar or zip files found to path. | |
501 // Note: path must be c-heap-allocated (or NULL); it is freed if non-null. | |
502 char* SysClassPath::add_jars_to_path(char* path, const char* directory) { | |
503 DIR* dir = os::opendir(directory); | |
504 if (dir == NULL) return path; | |
505 | |
506 char dir_sep[2] = { '\0', '\0' }; | |
507 size_t directory_len = strlen(directory); | |
508 const char fileSep = *os::file_separator(); | |
509 if (directory[directory_len - 1] != fileSep) dir_sep[0] = fileSep; | |
510 | |
511 /* Scan the directory for jars/zips, appending them to path. */ | |
512 struct dirent *entry; | |
6197 | 513 char *dbuf = NEW_C_HEAP_ARRAY(char, os::readdir_buf_size(directory), mtInternal); |
0 | 514 while ((entry = os::readdir(dir, (dirent *) dbuf)) != NULL) { |
515 const char* name = entry->d_name; | |
516 const char* ext = name + strlen(name) - 4; | |
517 bool isJarOrZip = ext > name && | |
518 (os::file_name_strcmp(ext, ".jar") == 0 || | |
519 os::file_name_strcmp(ext, ".zip") == 0); | |
520 if (isJarOrZip) { | |
6197 | 521 char* jarpath = NEW_C_HEAP_ARRAY(char, directory_len + 2 + strlen(name), mtInternal); |
0 | 522 sprintf(jarpath, "%s%s%s", directory, dir_sep, name); |
523 path = add_to_path(path, jarpath, false); | |
6197 | 524 FREE_C_HEAP_ARRAY(char, jarpath, mtInternal); |
0 | 525 } |
526 } | |
6197 | 527 FREE_C_HEAP_ARRAY(char, dbuf, mtInternal); |
0 | 528 os::closedir(dir); |
529 return path; | |
530 } | |
531 | |
532 // Parses a memory size specification string. | |
489
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533 static bool atomull(const char *s, julong* result) { |
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534 julong n = 0; |
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535 int args_read = sscanf(s, JULONG_FORMAT, &n); |
0 | 536 if (args_read != 1) { |
537 return false; | |
538 } | |
539 while (*s != '\0' && isdigit(*s)) { | |
540 s++; | |
541 } | |
542 // 4705540: illegal if more characters are found after the first non-digit | |
543 if (strlen(s) > 1) { | |
544 return false; | |
545 } | |
546 switch (*s) { | |
547 case 'T': case 't': | |
548 *result = n * G * K; | |
489
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549 // Check for overflow. |
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550 if (*result/((julong)G * K) != n) return false; |
0 | 551 return true; |
552 case 'G': case 'g': | |
553 *result = n * G; | |
489
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554 if (*result/G != n) return false; |
0 | 555 return true; |
556 case 'M': case 'm': | |
557 *result = n * M; | |
489
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558 if (*result/M != n) return false; |
0 | 559 return true; |
560 case 'K': case 'k': | |
561 *result = n * K; | |
489
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562 if (*result/K != n) return false; |
0 | 563 return true; |
564 case '\0': | |
565 *result = n; | |
566 return true; | |
567 default: | |
568 return false; | |
569 } | |
570 } | |
571 | |
489
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572 Arguments::ArgsRange Arguments::check_memory_size(julong size, julong min_size) { |
0 | 573 if (size < min_size) return arg_too_small; |
574 // Check that size will fit in a size_t (only relevant on 32-bit) | |
489
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575 if (size > max_uintx) return arg_too_big; |
0 | 576 return arg_in_range; |
577 } | |
578 | |
579 // Describe an argument out of range error | |
580 void Arguments::describe_range_error(ArgsRange errcode) { | |
581 switch(errcode) { | |
582 case arg_too_big: | |
583 jio_fprintf(defaultStream::error_stream(), | |
584 "The specified size exceeds the maximum " | |
585 "representable size.\n"); | |
586 break; | |
587 case arg_too_small: | |
588 case arg_unreadable: | |
589 case arg_in_range: | |
590 // do nothing for now | |
591 break; | |
592 default: | |
593 ShouldNotReachHere(); | |
594 } | |
595 } | |
596 | |
597 static bool set_bool_flag(char* name, bool value, FlagValueOrigin origin) { | |
598 return CommandLineFlags::boolAtPut(name, &value, origin); | |
599 } | |
600 | |
601 static bool set_fp_numeric_flag(char* name, char* value, FlagValueOrigin origin) { | |
602 double v; | |
603 if (sscanf(value, "%lf", &v) != 1) { | |
604 return false; | |
605 } | |
606 | |
607 if (CommandLineFlags::doubleAtPut(name, &v, origin)) { | |
608 return true; | |
609 } | |
610 return false; | |
611 } | |
612 | |
613 static bool set_numeric_flag(char* name, char* value, FlagValueOrigin origin) { | |
489
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614 julong v; |
0 | 615 intx intx_v; |
616 bool is_neg = false; | |
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617 // Check the sign first since atomull() parses only unsigned values. |
0 | 618 if (*value == '-') { |
619 if (!CommandLineFlags::intxAt(name, &intx_v)) { | |
620 return false; | |
621 } | |
622 value++; | |
623 is_neg = true; | |
624 } | |
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625 if (!atomull(value, &v)) { |
0 | 626 return false; |
627 } | |
628 intx_v = (intx) v; | |
629 if (is_neg) { | |
630 intx_v = -intx_v; | |
631 } | |
632 if (CommandLineFlags::intxAtPut(name, &intx_v, origin)) { | |
633 return true; | |
634 } | |
635 uintx uintx_v = (uintx) v; | |
636 if (!is_neg && CommandLineFlags::uintxAtPut(name, &uintx_v, origin)) { | |
637 return true; | |
638 } | |
1064 | 639 uint64_t uint64_t_v = (uint64_t) v; |
640 if (!is_neg && CommandLineFlags::uint64_tAtPut(name, &uint64_t_v, origin)) { | |
641 return true; | |
642 } | |
0 | 643 return false; |
644 } | |
645 | |
646 static bool set_string_flag(char* name, const char* value, FlagValueOrigin origin) { | |
647 if (!CommandLineFlags::ccstrAtPut(name, &value, origin)) return false; | |
648 // Contract: CommandLineFlags always returns a pointer that needs freeing. | |
6197 | 649 FREE_C_HEAP_ARRAY(char, value, mtInternal); |
0 | 650 return true; |
651 } | |
652 | |
653 static bool append_to_string_flag(char* name, const char* new_value, FlagValueOrigin origin) { | |
654 const char* old_value = ""; | |
655 if (!CommandLineFlags::ccstrAt(name, &old_value)) return false; | |
656 size_t old_len = old_value != NULL ? strlen(old_value) : 0; | |
657 size_t new_len = strlen(new_value); | |
658 const char* value; | |
659 char* free_this_too = NULL; | |
660 if (old_len == 0) { | |
661 value = new_value; | |
662 } else if (new_len == 0) { | |
663 value = old_value; | |
664 } else { | |
6197 | 665 char* buf = NEW_C_HEAP_ARRAY(char, old_len + 1 + new_len + 1, mtInternal); |
0 | 666 // each new setting adds another LINE to the switch: |
667 sprintf(buf, "%s\n%s", old_value, new_value); | |
668 value = buf; | |
669 free_this_too = buf; | |
670 } | |
671 (void) CommandLineFlags::ccstrAtPut(name, &value, origin); | |
672 // CommandLineFlags always returns a pointer that needs freeing. | |
6197 | 673 FREE_C_HEAP_ARRAY(char, value, mtInternal); |
0 | 674 if (free_this_too != NULL) { |
675 // CommandLineFlags made its own copy, so I must delete my own temp. buffer. | |
6197 | 676 FREE_C_HEAP_ARRAY(char, free_this_too, mtInternal); |
0 | 677 } |
678 return true; | |
679 } | |
680 | |
681 bool Arguments::parse_argument(const char* arg, FlagValueOrigin origin) { | |
682 | |
683 // range of acceptable characters spelled out for portability reasons | |
684 #define NAME_RANGE "[abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789_]" | |
685 #define BUFLEN 255 | |
686 char name[BUFLEN+1]; | |
687 char dummy; | |
688 | |
689 if (sscanf(arg, "-%" XSTR(BUFLEN) NAME_RANGE "%c", name, &dummy) == 1) { | |
690 return set_bool_flag(name, false, origin); | |
691 } | |
692 if (sscanf(arg, "+%" XSTR(BUFLEN) NAME_RANGE "%c", name, &dummy) == 1) { | |
693 return set_bool_flag(name, true, origin); | |
694 } | |
695 | |
696 char punct; | |
697 if (sscanf(arg, "%" XSTR(BUFLEN) NAME_RANGE "%c", name, &punct) == 2 && punct == '=') { | |
698 const char* value = strchr(arg, '=') + 1; | |
699 Flag* flag = Flag::find_flag(name, strlen(name)); | |
700 if (flag != NULL && flag->is_ccstr()) { | |
701 if (flag->ccstr_accumulates()) { | |
702 return append_to_string_flag(name, value, origin); | |
703 } else { | |
704 if (value[0] == '\0') { | |
705 value = NULL; | |
706 } | |
707 return set_string_flag(name, value, origin); | |
708 } | |
709 } | |
710 } | |
711 | |
712 if (sscanf(arg, "%" XSTR(BUFLEN) NAME_RANGE ":%c", name, &punct) == 2 && punct == '=') { | |
713 const char* value = strchr(arg, '=') + 1; | |
714 // -XX:Foo:=xxx will reset the string flag to the given value. | |
715 if (value[0] == '\0') { | |
716 value = NULL; | |
717 } | |
718 return set_string_flag(name, value, origin); | |
719 } | |
720 | |
721 #define SIGNED_FP_NUMBER_RANGE "[-0123456789.]" | |
722 #define SIGNED_NUMBER_RANGE "[-0123456789]" | |
723 #define NUMBER_RANGE "[0123456789]" | |
724 char value[BUFLEN + 1]; | |
725 char value2[BUFLEN + 1]; | |
726 if (sscanf(arg, "%" XSTR(BUFLEN) NAME_RANGE "=" "%" XSTR(BUFLEN) SIGNED_NUMBER_RANGE "." "%" XSTR(BUFLEN) NUMBER_RANGE "%c", name, value, value2, &dummy) == 3) { | |
727 // Looks like a floating-point number -- try again with more lenient format string | |
728 if (sscanf(arg, "%" XSTR(BUFLEN) NAME_RANGE "=" "%" XSTR(BUFLEN) SIGNED_FP_NUMBER_RANGE "%c", name, value, &dummy) == 2) { | |
729 return set_fp_numeric_flag(name, value, origin); | |
730 } | |
731 } | |
732 | |
733 #define VALUE_RANGE "[-kmgtKMGT0123456789]" | |
734 if (sscanf(arg, "%" XSTR(BUFLEN) NAME_RANGE "=" "%" XSTR(BUFLEN) VALUE_RANGE "%c", name, value, &dummy) == 2) { | |
735 return set_numeric_flag(name, value, origin); | |
736 } | |
737 | |
738 return false; | |
739 } | |
740 | |
741 void Arguments::add_string(char*** bldarray, int* count, const char* arg) { | |
742 assert(bldarray != NULL, "illegal argument"); | |
743 | |
744 if (arg == NULL) { | |
745 return; | |
746 } | |
747 | |
748 int index = *count; | |
749 | |
750 // expand the array and add arg to the last element | |
751 (*count)++; | |
752 if (*bldarray == NULL) { | |
6197 | 753 *bldarray = NEW_C_HEAP_ARRAY(char*, *count, mtInternal); |
0 | 754 } else { |
6197 | 755 *bldarray = REALLOC_C_HEAP_ARRAY(char*, *bldarray, *count, mtInternal); |
0 | 756 } |
757 (*bldarray)[index] = strdup(arg); | |
758 } | |
759 | |
760 void Arguments::build_jvm_args(const char* arg) { | |
761 add_string(&_jvm_args_array, &_num_jvm_args, arg); | |
762 } | |
763 | |
764 void Arguments::build_jvm_flags(const char* arg) { | |
765 add_string(&_jvm_flags_array, &_num_jvm_flags, arg); | |
766 } | |
767 | |
768 // utility function to return a string that concatenates all | |
769 // strings in a given char** array | |
770 const char* Arguments::build_resource_string(char** args, int count) { | |
771 if (args == NULL || count == 0) { | |
772 return NULL; | |
773 } | |
774 size_t length = strlen(args[0]) + 1; // add 1 for the null terminator | |
775 for (int i = 1; i < count; i++) { | |
776 length += strlen(args[i]) + 1; // add 1 for a space | |
777 } | |
778 char* s = NEW_RESOURCE_ARRAY(char, length); | |
779 strcpy(s, args[0]); | |
780 for (int j = 1; j < count; j++) { | |
781 strcat(s, " "); | |
782 strcat(s, args[j]); | |
783 } | |
784 return (const char*) s; | |
785 } | |
786 | |
787 void Arguments::print_on(outputStream* st) { | |
788 st->print_cr("VM Arguments:"); | |
789 if (num_jvm_flags() > 0) { | |
790 st->print("jvm_flags: "); print_jvm_flags_on(st); | |
791 } | |
792 if (num_jvm_args() > 0) { | |
793 st->print("jvm_args: "); print_jvm_args_on(st); | |
794 } | |
795 st->print_cr("java_command: %s", java_command() ? java_command() : "<unknown>"); | |
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796 if (_java_class_path != NULL) { |
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797 char* path = _java_class_path->value(); |
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798 st->print_cr("java_class_path (initial): %s", strlen(path) == 0 ? "<not set>" : path ); |
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799 } |
0 | 800 st->print_cr("Launcher Type: %s", _sun_java_launcher); |
801 } | |
802 | |
803 void Arguments::print_jvm_flags_on(outputStream* st) { | |
804 if (_num_jvm_flags > 0) { | |
805 for (int i=0; i < _num_jvm_flags; i++) { | |
806 st->print("%s ", _jvm_flags_array[i]); | |
807 } | |
808 st->print_cr(""); | |
809 } | |
810 } | |
811 | |
812 void Arguments::print_jvm_args_on(outputStream* st) { | |
813 if (_num_jvm_args > 0) { | |
814 for (int i=0; i < _num_jvm_args; i++) { | |
815 st->print("%s ", _jvm_args_array[i]); | |
816 } | |
817 st->print_cr(""); | |
818 } | |
819 } | |
820 | |
242 | 821 bool Arguments::process_argument(const char* arg, |
822 jboolean ignore_unrecognized, FlagValueOrigin origin) { | |
823 | |
824 JDK_Version since = JDK_Version(); | |
0 | 825 |
3250 | 826 if (parse_argument(arg, origin) || ignore_unrecognized) { |
827 return true; | |
0 | 828 } |
3250 | 829 |
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830 bool has_plus_minus = (*arg == '+' || *arg == '-'); |
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831 const char* const argname = has_plus_minus ? arg + 1 : arg; |
3250 | 832 if (is_newly_obsolete(arg, &since)) { |
833 char version[256]; | |
834 since.to_string(version, sizeof(version)); | |
835 warning("ignoring option %s; support was removed in %s", argname, version); | |
836 return true; | |
837 } | |
838 | |
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839 // For locked flags, report a custom error message if available. |
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840 // Otherwise, report the standard unrecognized VM option. |
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841 |
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842 size_t arg_len; |
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843 const char* equal_sign = strchr(argname, '='); |
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844 if (equal_sign == NULL) { |
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845 arg_len = strlen(argname); |
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846 } else { |
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847 arg_len = equal_sign - argname; |
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848 } |
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849 |
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850 Flag* found_flag = Flag::find_flag((char*)argname, arg_len, true); |
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851 if (found_flag != NULL) { |
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852 char locked_message_buf[BUFLEN]; |
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853 found_flag->get_locked_message(locked_message_buf, BUFLEN); |
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854 if (strlen(locked_message_buf) == 0) { |
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855 if (found_flag->is_bool() && !has_plus_minus) { |
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856 jio_fprintf(defaultStream::error_stream(), |
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857 "Missing +/- setting for VM option '%s'\n", argname); |
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858 } else if (!found_flag->is_bool() && has_plus_minus) { |
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859 jio_fprintf(defaultStream::error_stream(), |
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860 "Unexpected +/- setting in VM option '%s'\n", argname); |
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861 } else { |
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862 jio_fprintf(defaultStream::error_stream(), |
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863 "Improperly specified VM option '%s'\n", argname); |
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864 } |
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865 } else { |
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866 jio_fprintf(defaultStream::error_stream(), "%s", locked_message_buf); |
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867 } |
6017 | 868 } else { |
869 jio_fprintf(defaultStream::error_stream(), | |
870 "Unrecognized VM option '%s'\n", argname); | |
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871 } |
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872 |
3250 | 873 // allow for commandline "commenting out" options like -XX:#+Verbose |
874 return arg[0] == '#'; | |
0 | 875 } |
876 | |
877 bool Arguments::process_settings_file(const char* file_name, bool should_exist, jboolean ignore_unrecognized) { | |
878 FILE* stream = fopen(file_name, "rb"); | |
879 if (stream == NULL) { | |
880 if (should_exist) { | |
881 jio_fprintf(defaultStream::error_stream(), | |
882 "Could not open settings file %s\n", file_name); | |
883 return false; | |
884 } else { | |
885 return true; | |
886 } | |
887 } | |
888 | |
889 char token[1024]; | |
890 int pos = 0; | |
891 | |
892 bool in_white_space = true; | |
893 bool in_comment = false; | |
894 bool in_quote = false; | |
895 char quote_c = 0; | |
896 bool result = true; | |
897 | |
898 int c = getc(stream); | |
6901 | 899 while(c != EOF && pos < (int)(sizeof(token)-1)) { |
0 | 900 if (in_white_space) { |
901 if (in_comment) { | |
902 if (c == '\n') in_comment = false; | |
903 } else { | |
904 if (c == '#') in_comment = true; | |
905 else if (!isspace(c)) { | |
906 in_white_space = false; | |
907 token[pos++] = c; | |
908 } | |
909 } | |
910 } else { | |
911 if (c == '\n' || (!in_quote && isspace(c))) { | |
912 // token ends at newline, or at unquoted whitespace | |
913 // this allows a way to include spaces in string-valued options | |
914 token[pos] = '\0'; | |
915 logOption(token); | |
916 result &= process_argument(token, ignore_unrecognized, CONFIG_FILE); | |
917 build_jvm_flags(token); | |
918 pos = 0; | |
919 in_white_space = true; | |
920 in_quote = false; | |
921 } else if (!in_quote && (c == '\'' || c == '"')) { | |
922 in_quote = true; | |
923 quote_c = c; | |
924 } else if (in_quote && (c == quote_c)) { | |
925 in_quote = false; | |
926 } else { | |
927 token[pos++] = c; | |
928 } | |
929 } | |
930 c = getc(stream); | |
931 } | |
932 if (pos > 0) { | |
933 token[pos] = '\0'; | |
934 result &= process_argument(token, ignore_unrecognized, CONFIG_FILE); | |
935 build_jvm_flags(token); | |
936 } | |
937 fclose(stream); | |
938 return result; | |
939 } | |
940 | |
941 //============================================================================================================= | |
942 // Parsing of properties (-D) | |
943 | |
944 const char* Arguments::get_property(const char* key) { | |
945 return PropertyList_get_value(system_properties(), key); | |
946 } | |
947 | |
948 bool Arguments::add_property(const char* prop) { | |
949 const char* eq = strchr(prop, '='); | |
950 char* key; | |
951 // ns must be static--its address may be stored in a SystemProperty object. | |
952 const static char ns[1] = {0}; | |
953 char* value = (char *)ns; | |
954 | |
955 size_t key_len = (eq == NULL) ? strlen(prop) : (eq - prop); | |
6197 | 956 key = AllocateHeap(key_len + 1, mtInternal); |
0 | 957 strncpy(key, prop, key_len); |
958 key[key_len] = '\0'; | |
959 | |
960 if (eq != NULL) { | |
961 size_t value_len = strlen(prop) - key_len - 1; | |
6197 | 962 value = AllocateHeap(value_len + 1, mtInternal); |
0 | 963 strncpy(value, &prop[key_len + 1], value_len + 1); |
964 } | |
965 | |
966 if (strcmp(key, "java.compiler") == 0) { | |
967 process_java_compiler_argument(value); | |
968 FreeHeap(key); | |
969 if (eq != NULL) { | |
970 FreeHeap(value); | |
971 } | |
972 return true; | |
691 | 973 } else if (strcmp(key, "sun.java.command") == 0) { |
0 | 974 _java_command = value; |
975 | |
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976 // Record value in Arguments, but let it get passed to Java. |
691 | 977 } else if (strcmp(key, "sun.java.launcher.pid") == 0) { |
0 | 978 // launcher.pid property is private and is processed |
979 // in process_sun_java_launcher_properties(); | |
980 // the sun.java.launcher property is passed on to the java application | |
981 FreeHeap(key); | |
982 if (eq != NULL) { | |
983 FreeHeap(value); | |
984 } | |
985 return true; | |
691 | 986 } else if (strcmp(key, "java.vendor.url.bug") == 0) { |
0 | 987 // save it in _java_vendor_url_bug, so JVM fatal error handler can access |
988 // its value without going through the property list or making a Java call. | |
989 _java_vendor_url_bug = value; | |
691 | 990 } else if (strcmp(key, "sun.boot.library.path") == 0) { |
991 PropertyList_unique_add(&_system_properties, key, value, true); | |
992 return true; | |
0 | 993 } |
994 // Create new property and add at the end of the list | |
995 PropertyList_unique_add(&_system_properties, key, value); | |
996 return true; | |
997 } | |
998 | |
999 //=========================================================================================================== | |
1000 // Setting int/mixed/comp mode flags | |
1001 | |
1002 void Arguments::set_mode_flags(Mode mode) { | |
1003 // Set up default values for all flags. | |
1004 // If you add a flag to any of the branches below, | |
1005 // add a default value for it here. | |
1006 set_java_compiler(false); | |
1007 _mode = mode; | |
1008 | |
1009 // Ensure Agent_OnLoad has the correct initial values. | |
1010 // This may not be the final mode; mode may change later in onload phase. | |
1011 PropertyList_unique_add(&_system_properties, "java.vm.info", | |
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1012 (char*)VM_Version::vm_info_string(), false); |
0 | 1013 |
1014 UseInterpreter = true; | |
1015 UseCompiler = true; | |
1016 UseLoopCounter = true; | |
1017 | |
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1018 #ifndef ZERO |
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1019 // Turn these off for mixed and comp. Leave them on for Zero. |
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1020 if (FLAG_IS_DEFAULT(UseFastAccessorMethods)) { |
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1021 UseFastAccessorMethods = (mode == _int); |
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1022 } |
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1023 if (FLAG_IS_DEFAULT(UseFastEmptyMethods)) { |
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1024 UseFastEmptyMethods = (mode == _int); |
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1025 } |
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1026 #endif |
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1027 |
0 | 1028 // Default values may be platform/compiler dependent - |
1029 // use the saved values | |
1030 ClipInlining = Arguments::_ClipInlining; | |
1031 AlwaysCompileLoopMethods = Arguments::_AlwaysCompileLoopMethods; | |
1032 UseOnStackReplacement = Arguments::_UseOnStackReplacement; | |
1033 BackgroundCompilation = Arguments::_BackgroundCompilation; | |
1034 | |
1035 // Change from defaults based on mode | |
1036 switch (mode) { | |
1037 default: | |
1038 ShouldNotReachHere(); | |
1039 break; | |
1040 case _int: | |
1041 UseCompiler = false; | |
1042 UseLoopCounter = false; | |
1043 AlwaysCompileLoopMethods = false; | |
1044 UseOnStackReplacement = false; | |
1045 break; | |
1046 case _mixed: | |
1047 // same as default | |
1048 break; | |
1049 case _comp: | |
1050 UseInterpreter = false; | |
1051 BackgroundCompilation = false; | |
1052 ClipInlining = false; | |
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1053 // Be much more aggressive in tiered mode with -Xcomp and exercise C2 more. |
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1054 // We will first compile a level 3 version (C1 with full profiling), then do one invocation of it and |
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1055 // compile a level 4 (C2) and then continue executing it. |
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1056 if (TieredCompilation) { |
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1057 Tier3InvokeNotifyFreqLog = 0; |
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1058 Tier4InvocationThreshold = 0; |
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1059 } |
0 | 1060 break; |
1061 } | |
1062 } | |
1063 | |
1064 // Conflict: required to use shared spaces (-Xshare:on), but | |
1065 // incompatible command line options were chosen. | |
1066 | |
1067 static void no_shared_spaces() { | |
1068 if (RequireSharedSpaces) { | |
1069 jio_fprintf(defaultStream::error_stream(), | |
1070 "Class data sharing is inconsistent with other specified options.\n"); | |
1071 vm_exit_during_initialization("Unable to use shared archive.", NULL); | |
1072 } else { | |
1073 FLAG_SET_DEFAULT(UseSharedSpaces, false); | |
1074 } | |
1075 } | |
1076 | |
1783 | 1077 void Arguments::set_tiered_flags() { |
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1078 // With tiered, set default policy to AdvancedThresholdPolicy, which is 3. |
1783 | 1079 if (FLAG_IS_DEFAULT(CompilationPolicyChoice)) { |
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1080 FLAG_SET_DEFAULT(CompilationPolicyChoice, 3); |
1783 | 1081 } |
1082 if (CompilationPolicyChoice < 2) { | |
1083 vm_exit_during_initialization( | |
1084 "Incompatible compilation policy selected", NULL); | |
1085 } | |
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1086 // Increase the code cache size - tiered compiles a lot more. |
1783 | 1087 if (FLAG_IS_DEFAULT(ReservedCodeCacheSize)) { |
1088 FLAG_SET_DEFAULT(ReservedCodeCacheSize, ReservedCodeCacheSize * 2); | |
1089 } | |
1090 } | |
1091 | |
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1092 #if INCLUDE_ALTERNATE_GCS |
4838 | 1093 static void disable_adaptive_size_policy(const char* collector_name) { |
1094 if (UseAdaptiveSizePolicy) { | |
1095 if (FLAG_IS_CMDLINE(UseAdaptiveSizePolicy)) { | |
1096 warning("disabling UseAdaptiveSizePolicy; it is incompatible with %s.", | |
1097 collector_name); | |
1098 } | |
1099 FLAG_SET_DEFAULT(UseAdaptiveSizePolicy, false); | |
1100 } | |
1101 } | |
1102 | |
0 | 1103 void Arguments::set_parnew_gc_flags() { |
1064 | 1104 assert(!UseSerialGC && !UseParallelOldGC && !UseParallelGC && !UseG1GC, |
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1105 "control point invariant"); |
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1106 assert(UseParNewGC, "Error"); |
0 | 1107 |
4838 | 1108 // Turn off AdaptiveSizePolicy for parnew until it is complete. |
1109 disable_adaptive_size_policy("UseParNewGC"); | |
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1110 |
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1111 if (FLAG_IS_DEFAULT(ParallelGCThreads)) { |
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1112 FLAG_SET_DEFAULT(ParallelGCThreads, Abstract_VM_Version::parallel_worker_threads()); |
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1113 assert(ParallelGCThreads > 0, "We should always have at least one thread by default"); |
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1114 } else if (ParallelGCThreads == 0) { |
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1115 jio_fprintf(defaultStream::error_stream(), |
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1116 "The ParNew GC can not be combined with -XX:ParallelGCThreads=0\n"); |
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1117 vm_exit(1); |
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1118 } |
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1119 |
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1120 // By default YoungPLABSize and OldPLABSize are set to 4096 and 1024 respectively, |
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1121 // these settings are default for Parallel Scavenger. For ParNew+Tenured configuration |
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1122 // we set them to 1024 and 1024. |
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1123 // See CR 6362902. |
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1124 if (FLAG_IS_DEFAULT(YoungPLABSize)) { |
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1125 FLAG_SET_DEFAULT(YoungPLABSize, (intx)1024); |
0 | 1126 } |
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1127 if (FLAG_IS_DEFAULT(OldPLABSize)) { |
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1128 FLAG_SET_DEFAULT(OldPLABSize, (intx)1024); |
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1129 } |
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1130 |
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1131 // AlwaysTenure flag should make ParNew promote all at first collection. |
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1132 // See CR 6362902. |
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1133 if (AlwaysTenure) { |
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1134 FLAG_SET_CMDLINE(uintx, MaxTenuringThreshold, 0); |
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1135 } |
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1136 // When using compressed oops, we use local overflow stacks, |
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1137 // rather than using a global overflow list chained through |
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1138 // the klass word of the object's pre-image. |
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1139 if (UseCompressedOops && !ParGCUseLocalOverflow) { |
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1140 if (!FLAG_IS_DEFAULT(ParGCUseLocalOverflow)) { |
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1141 warning("Forcing +ParGCUseLocalOverflow: needed if using compressed references"); |
0 | 1142 } |
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1143 FLAG_SET_DEFAULT(ParGCUseLocalOverflow, true); |
0 | 1144 } |
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1145 assert(ParGCUseLocalOverflow || !UseCompressedOops, "Error"); |
0 | 1146 } |
1147 | |
1148 // Adjust some sizes to suit CMS and/or ParNew needs; these work well on | |
1149 // sparc/solaris for certain applications, but would gain from | |
1150 // further optimization and tuning efforts, and would almost | |
1151 // certainly gain from analysis of platform and environment. | |
1152 void Arguments::set_cms_and_parnew_gc_flags() { | |
1064 | 1153 assert(!UseSerialGC && !UseParallelOldGC && !UseParallelGC, "Error"); |
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1154 assert(UseConcMarkSweepGC, "CMS is expected to be on here"); |
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1155 |
0 | 1156 // If we are using CMS, we prefer to UseParNewGC, |
1157 // unless explicitly forbidden. | |
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1158 if (FLAG_IS_DEFAULT(UseParNewGC)) { |
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1159 FLAG_SET_ERGO(bool, UseParNewGC, true); |
0 | 1160 } |
1161 | |
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1162 // Turn off AdaptiveSizePolicy by default for cms until it is complete. |
4838 | 1163 disable_adaptive_size_policy("UseConcMarkSweepGC"); |
0 | 1164 |
1165 // In either case, adjust ParallelGCThreads and/or UseParNewGC | |
1166 // as needed. | |
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1167 if (UseParNewGC) { |
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1168 set_parnew_gc_flags(); |
0 | 1169 } |
1170 | |
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1171 // MaxHeapSize is aligned down in collectorPolicy |
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1172 size_t max_heap = align_size_down(MaxHeapSize, |
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1173 CardTableRS::ct_max_alignment_constraint()); |
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1174 |
0 | 1175 // Now make adjustments for CMS |
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1176 intx tenuring_default = (intx)6; |
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1177 size_t young_gen_per_worker = CMSYoungGenPerWorker; |
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1178 |
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1179 // Preferred young gen size for "short" pauses: |
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1180 // upper bound depends on # of threads and NewRatio. |
0 | 1181 const uintx parallel_gc_threads = |
1182 (ParallelGCThreads == 0 ? 1 : ParallelGCThreads); | |
1183 const size_t preferred_max_new_size_unaligned = | |
2368
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1184 MIN2(max_heap/(NewRatio+1), ScaleForWordSize(young_gen_per_worker * parallel_gc_threads)); |
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1185 size_t preferred_max_new_size = |
0 | 1186 align_size_up(preferred_max_new_size_unaligned, os::vm_page_size()); |
1187 | |
1188 // Unless explicitly requested otherwise, size young gen | |
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1189 // for "short" pauses ~ CMSYoungGenPerWorker*ParallelGCThreads |
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1190 |
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1191 // If either MaxNewSize or NewRatio is set on the command line, |
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1192 // assume the user is trying to set the size of the young gen. |
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1193 if (FLAG_IS_DEFAULT(MaxNewSize) && FLAG_IS_DEFAULT(NewRatio)) { |
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1194 |
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1195 // Set MaxNewSize to our calculated preferred_max_new_size unless |
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1196 // NewSize was set on the command line and it is larger than |
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1197 // preferred_max_new_size. |
0 | 1198 if (!FLAG_IS_DEFAULT(NewSize)) { // NewSize explicitly set at command-line |
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1199 FLAG_SET_ERGO(uintx, MaxNewSize, MAX2(NewSize, preferred_max_new_size)); |
0 | 1200 } else { |
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1201 FLAG_SET_ERGO(uintx, MaxNewSize, preferred_max_new_size); |
0 | 1202 } |
1064 | 1203 if (PrintGCDetails && Verbose) { |
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1204 // Too early to use gclog_or_tty |
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1205 tty->print_cr("CMS ergo set MaxNewSize: " SIZE_FORMAT, MaxNewSize); |
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1206 } |
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1207 |
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1208 // Code along this path potentially sets NewSize and OldSize |
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1209 |
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1210 assert(max_heap >= InitialHeapSize, "Error"); |
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1211 assert(max_heap >= NewSize, "Error"); |
0 | 1212 |
1064 | 1213 if (PrintGCDetails && Verbose) { |
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1214 // Too early to use gclog_or_tty |
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1215 tty->print_cr("CMS set min_heap_size: " SIZE_FORMAT |
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1216 " initial_heap_size: " SIZE_FORMAT |
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1217 " max_heap: " SIZE_FORMAT, |
1064 | 1218 min_heap_size(), InitialHeapSize, max_heap); |
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1219 } |
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1220 size_t min_new = preferred_max_new_size; |
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1221 if (FLAG_IS_CMDLINE(NewSize)) { |
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1222 min_new = NewSize; |
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1223 } |
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1224 if (max_heap > min_new && min_heap_size() > min_new) { |
0 | 1225 // Unless explicitly requested otherwise, make young gen |
1226 // at least min_new, and at most preferred_max_new_size. | |
1227 if (FLAG_IS_DEFAULT(NewSize)) { | |
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1228 FLAG_SET_ERGO(uintx, NewSize, MAX2(NewSize, min_new)); |
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1229 FLAG_SET_ERGO(uintx, NewSize, MIN2(preferred_max_new_size, NewSize)); |
1064 | 1230 if (PrintGCDetails && Verbose) { |
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1231 // Too early to use gclog_or_tty |
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1232 tty->print_cr("CMS ergo set NewSize: " SIZE_FORMAT, NewSize); |
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1233 } |
0 | 1234 } |
1235 // Unless explicitly requested otherwise, size old gen | |
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1236 // so it's NewRatio x of NewSize. |
0 | 1237 if (FLAG_IS_DEFAULT(OldSize)) { |
1238 if (max_heap > NewSize) { | |
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1239 FLAG_SET_ERGO(uintx, OldSize, MIN2(NewRatio*NewSize, max_heap - NewSize)); |
1064 | 1240 if (PrintGCDetails && Verbose) { |
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1241 // Too early to use gclog_or_tty |
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1242 tty->print_cr("CMS ergo set OldSize: " SIZE_FORMAT, OldSize); |
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1243 } |
0 | 1244 } |
1245 } | |
1246 } | |
1247 } | |
1248 // Unless explicitly requested otherwise, definitely | |
1249 // promote all objects surviving "tenuring_default" scavenges. | |
1250 if (FLAG_IS_DEFAULT(MaxTenuringThreshold) && | |
1251 FLAG_IS_DEFAULT(SurvivorRatio)) { | |
6818 | 1252 FLAG_SET_ERGO(uintx, MaxTenuringThreshold, tenuring_default); |
0 | 1253 } |
1254 // If we decided above (or user explicitly requested) | |
1255 // `promote all' (via MaxTenuringThreshold := 0), | |
1256 // prefer minuscule survivor spaces so as not to waste | |
1257 // space for (non-existent) survivors | |
1258 if (FLAG_IS_DEFAULT(SurvivorRatio) && MaxTenuringThreshold == 0) { | |
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1259 FLAG_SET_ERGO(intx, SurvivorRatio, MAX2((intx)1024, SurvivorRatio)); |
0 | 1260 } |
1261 // If OldPLABSize is set and CMSParPromoteBlocksToClaim is not, | |
1262 // set CMSParPromoteBlocksToClaim equal to OldPLABSize. | |
1263 // This is done in order to make ParNew+CMS configuration to work | |
1264 // with YoungPLABSize and OldPLABSize options. | |
1265 // See CR 6362902. | |
1266 if (!FLAG_IS_DEFAULT(OldPLABSize)) { | |
1267 if (FLAG_IS_DEFAULT(CMSParPromoteBlocksToClaim)) { | |
13
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1268 // OldPLABSize is not the default value but CMSParPromoteBlocksToClaim |
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1269 // is. In this situtation let CMSParPromoteBlocksToClaim follow |
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1270 // the value (either from the command line or ergonomics) of |
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1271 // OldPLABSize. Following OldPLABSize is an ergonomics decision. |
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1272 FLAG_SET_ERGO(uintx, CMSParPromoteBlocksToClaim, OldPLABSize); |
1145
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1273 } else { |
0 | 1274 // OldPLABSize and CMSParPromoteBlocksToClaim are both set. |
1275 // CMSParPromoteBlocksToClaim is a collector-specific flag, so | |
1276 // we'll let it to take precedence. | |
1277 jio_fprintf(defaultStream::error_stream(), | |
886
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1278 "Both OldPLABSize and CMSParPromoteBlocksToClaim" |
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1279 " options are specified for the CMS collector." |
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1280 " CMSParPromoteBlocksToClaim will take precedence.\n"); |
0 | 1281 } |
1282 } | |
1145
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1283 if (!FLAG_IS_DEFAULT(ResizeOldPLAB) && !ResizeOldPLAB) { |
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1284 // OldPLAB sizing manually turned off: Use a larger default setting, |
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1285 // unless it was manually specified. This is because a too-low value |
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1286 // will slow down scavenges. |
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1287 if (FLAG_IS_DEFAULT(CMSParPromoteBlocksToClaim)) { |
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1288 FLAG_SET_ERGO(uintx, CMSParPromoteBlocksToClaim, 50); // default value before 6631166 |
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1289 } |
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1290 } |
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1291 // Overwrite OldPLABSize which is the variable we will internally use everywhere. |
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1292 FLAG_SET_ERGO(uintx, OldPLABSize, CMSParPromoteBlocksToClaim); |
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1293 // If either of the static initialization defaults have changed, note this |
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1294 // modification. |
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1295 if (!FLAG_IS_DEFAULT(CMSParPromoteBlocksToClaim) || !FLAG_IS_DEFAULT(OldPLABWeight)) { |
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1296 CFLS_LAB::modify_initialization(OldPLABSize, OldPLABWeight); |
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1297 } |
1284 | 1298 if (PrintGCDetails && Verbose) { |
1299 tty->print_cr("MarkStackSize: %uk MarkStackSizeMax: %uk", | |
1300 MarkStackSize / K, MarkStackSizeMax / K); | |
1301 tty->print_cr("ConcGCThreads: %u", ConcGCThreads); | |
1302 } | |
0 | 1303 } |
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1304 #endif // INCLUDE_ALTERNATE_GCS |
0 | 1305 |
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1306 void set_object_alignment() { |
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1307 // Object alignment. |
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1308 assert(is_power_of_2(ObjectAlignmentInBytes), "ObjectAlignmentInBytes must be power of 2"); |
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1309 MinObjAlignmentInBytes = ObjectAlignmentInBytes; |
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1310 assert(MinObjAlignmentInBytes >= HeapWordsPerLong * HeapWordSize, "ObjectAlignmentInBytes value is too small"); |
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1311 MinObjAlignment = MinObjAlignmentInBytes / HeapWordSize; |
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1312 assert(MinObjAlignmentInBytes == MinObjAlignment * HeapWordSize, "ObjectAlignmentInBytes value is incorrect"); |
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1313 MinObjAlignmentInBytesMask = MinObjAlignmentInBytes - 1; |
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1314 |
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1315 LogMinObjAlignmentInBytes = exact_log2(ObjectAlignmentInBytes); |
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1316 LogMinObjAlignment = LogMinObjAlignmentInBytes - LogHeapWordSize; |
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1317 |
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1318 // Oop encoding heap max |
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1319 OopEncodingHeapMax = (uint64_t(max_juint) + 1) << LogMinObjAlignmentInBytes; |
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1320 |
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1321 #if INCLUDE_ALTERNATE_GCS |
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1322 // Set CMS global values |
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1323 CompactibleFreeListSpace::set_cms_values(); |
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1324 #endif // INCLUDE_ALTERNATE_GCS |
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1325 } |
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1326 |
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1327 bool verify_object_alignment() { |
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1328 // Object alignment. |
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1329 if (!is_power_of_2(ObjectAlignmentInBytes)) { |
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1330 jio_fprintf(defaultStream::error_stream(), |
1829
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1331 "error: ObjectAlignmentInBytes=%d must be power of 2\n", |
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1332 (int)ObjectAlignmentInBytes); |
1571
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1333 return false; |
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1334 } |
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1335 if ((int)ObjectAlignmentInBytes < BytesPerLong) { |
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1336 jio_fprintf(defaultStream::error_stream(), |
1829
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1337 "error: ObjectAlignmentInBytes=%d must be greater or equal %d\n", |
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1338 (int)ObjectAlignmentInBytes, BytesPerLong); |
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1339 return false; |
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1340 } |
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1341 // It does not make sense to have big object alignment |
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1342 // since a space lost due to alignment will be greater |
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1343 // then a saved space from compressed oops. |
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1344 if ((int)ObjectAlignmentInBytes > 256) { |
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1345 jio_fprintf(defaultStream::error_stream(), |
7461
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1346 "error: ObjectAlignmentInBytes=%d must not be greater than 256\n", |
1829
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1347 (int)ObjectAlignmentInBytes); |
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1348 return false; |
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1349 } |
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1350 // In case page size is very small. |
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1351 if ((int)ObjectAlignmentInBytes >= os::vm_page_size()) { |
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1352 jio_fprintf(defaultStream::error_stream(), |
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1353 "error: ObjectAlignmentInBytes=%d must be less than page size %d\n", |
1829
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1354 (int)ObjectAlignmentInBytes, os::vm_page_size()); |
1571
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1355 return false; |
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1356 } |
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1357 return true; |
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1358 } |
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1359 |
135
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1360 inline uintx max_heap_for_compressed_oops() { |
1963 | 1361 // Avoid sign flip. |
6725
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1362 if (OopEncodingHeapMax < ClassMetaspaceSize + os::vm_page_size()) { |
1963 | 1363 return 0; |
1364 } | |
6725
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1365 LP64_ONLY(return OopEncodingHeapMax - ClassMetaspaceSize - os::vm_page_size()); |
1064 | 1366 NOT_LP64(ShouldNotReachHere(); return 0); |
135
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1367 } |
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1368 |
0 | 1369 bool Arguments::should_auto_select_low_pause_collector() { |
1370 if (UseAutoGCSelectPolicy && | |
1371 !FLAG_IS_DEFAULT(MaxGCPauseMillis) && | |
1372 (MaxGCPauseMillis <= AutoGCSelectPauseMillis)) { | |
1373 if (PrintGCDetails) { | |
1374 // Cannot use gclog_or_tty yet. | |
1375 tty->print_cr("Automatic selection of the low pause collector" | |
1376 " based on pause goal of %d (ms)", MaxGCPauseMillis); | |
1377 } | |
1378 return true; | |
1379 } | |
1380 return false; | |
1381 } | |
1382 | |
1383 void Arguments::set_ergonomics_flags() { | |
1384 | |
4946 | 1385 if (os::is_server_class_machine()) { |
0 | 1386 // If no other collector is requested explicitly, |
1387 // let the VM select the collector based on | |
1388 // machine class and automatic selection policy. | |
1389 if (!UseSerialGC && | |
1390 !UseConcMarkSweepGC && | |
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1391 !UseG1GC && |
0 | 1392 !UseParNewGC && |
1393 FLAG_IS_DEFAULT(UseParallelGC)) { | |
1394 if (should_auto_select_low_pause_collector()) { | |
1395 FLAG_SET_ERGO(bool, UseConcMarkSweepGC, true); | |
1396 } else { | |
1397 FLAG_SET_ERGO(bool, UseParallelGC, true); | |
1398 } | |
6725
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1399 } |
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1400 // Shared spaces work fine with other GCs but causes bytecode rewriting |
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1401 // to be disabled, which hurts interpreter performance and decreases |
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1402 // server performance. On server class machines, keep the default |
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1403 // off unless it is asked for. Future work: either add bytecode rewriting |
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1404 // at link time, or rewrite bytecodes in non-shared methods. |
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1405 if (!DumpSharedSpaces && !RequireSharedSpaces) { |
0 | 1406 no_shared_spaces(); |
1407 } | |
1408 } | |
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1409 |
1010 | 1410 #ifndef ZERO |
113
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1411 #ifdef _LP64 |
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1412 // Check that UseCompressedOops can be set with the max heap size allocated |
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1413 // by ergonomics. |
187 | 1414 if (MaxHeapSize <= max_heap_for_compressed_oops()) { |
1783 | 1415 #if !defined(COMPILER1) || defined(TIERED) |
2228 | 1416 if (FLAG_IS_DEFAULT(UseCompressedOops)) { |
932 | 1417 FLAG_SET_ERGO(bool, UseCompressedOops, true); |
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1418 } |
1060 | 1419 #endif |
325
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1420 #ifdef _WIN64 |
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1421 if (UseLargePages && UseCompressedOops) { |
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1422 // Cannot allocate guard pages for implicit checks in indexed addressing |
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1423 // mode, when large pages are specified on windows. |
642
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1424 // This flag could be switched ON if narrow oop base address is set to 0, |
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1425 // see code in Universe::initialize_heap(). |
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1426 Universe::set_narrow_oop_use_implicit_null_checks(false); |
325
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1427 } |
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1428 #endif // _WIN64 |
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1429 } else { |
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1430 if (UseCompressedOops && !FLAG_IS_DEFAULT(UseCompressedOops)) { |
344 | 1431 warning("Max heap size too large for Compressed Oops"); |
113
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1432 FLAG_SET_DEFAULT(UseCompressedOops, false); |
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1433 FLAG_SET_DEFAULT(UseCompressedKlassPointers, false); |
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1434 } |
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1435 } |
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1436 // UseCompressedOops must be on for UseCompressedKlassPointers to be on. |
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1437 if (!UseCompressedOops) { |
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1438 if (UseCompressedKlassPointers) { |
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1439 warning("UseCompressedKlassPointers requires UseCompressedOops"); |
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1440 } |
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1441 FLAG_SET_DEFAULT(UseCompressedKlassPointers, false); |
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1442 } else { |
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1443 // Turn on UseCompressedKlassPointers too |
6848
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1444 if (FLAG_IS_DEFAULT(UseCompressedKlassPointers)) { |
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1445 FLAG_SET_ERGO(bool, UseCompressedKlassPointers, true); |
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1446 } |
6736
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1447 // Set the ClassMetaspaceSize to something that will not need to be |
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1448 // expanded, since it cannot be expanded. |
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1449 if (UseCompressedKlassPointers && FLAG_IS_DEFAULT(ClassMetaspaceSize)) { |
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1450 // 100,000 classes seems like a good size, so 100M assumes around 1K |
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1451 // per klass. The vtable and oopMap is embedded so we don't have a fixed |
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1452 // size per klass. Eventually, this will be parameterized because it |
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1453 // would also be useful to determine the optimal size of the |
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1454 // systemDictionary. |
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1455 FLAG_SET_ERGO(uintx, ClassMetaspaceSize, 100*M); |
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1456 } |
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1457 } |
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1458 // Also checks that certain machines are slower with compressed oops |
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1459 // in vm_version initialization code. |
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1460 #endif // _LP64 |
1010 | 1461 #endif // !ZERO |
0 | 1462 } |
1463 | |
1464 void Arguments::set_parallel_gc_flags() { | |
342
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1465 assert(UseParallelGC || UseParallelOldGC, "Error"); |
4879 | 1466 // Enable ParallelOld unless it was explicitly disabled (cmd line or rc file). |
1467 if (FLAG_IS_DEFAULT(UseParallelOldGC)) { | |
1468 FLAG_SET_DEFAULT(UseParallelOldGC, true); | |
0 | 1469 } |
4879 | 1470 FLAG_SET_DEFAULT(UseParallelGC, true); |
0 | 1471 |
1472 // If no heap maximum was requested explicitly, use some reasonable fraction | |
1473 // of the physical memory, up to a maximum of 1GB. | |
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1474 FLAG_SET_DEFAULT(ParallelGCThreads, |
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1475 Abstract_VM_Version::parallel_worker_threads()); |
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1476 if (ParallelGCThreads == 0) { |
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1477 jio_fprintf(defaultStream::error_stream(), |
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1478 "The Parallel GC can not be combined with -XX:ParallelGCThreads=0\n"); |
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1479 vm_exit(1); |
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1480 } |
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1481 |
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1482 |
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1483 // If InitialSurvivorRatio or MinSurvivorRatio were not specified, but the |
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1484 // SurvivorRatio has been set, reset their default values to SurvivorRatio + |
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1485 // 2. By doing this we make SurvivorRatio also work for Parallel Scavenger. |
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1486 // See CR 6362902 for details. |
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1487 if (!FLAG_IS_DEFAULT(SurvivorRatio)) { |
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1488 if (FLAG_IS_DEFAULT(InitialSurvivorRatio)) { |
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1489 FLAG_SET_DEFAULT(InitialSurvivorRatio, SurvivorRatio + 2); |
0 | 1490 } |
7471
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1491 if (FLAG_IS_DEFAULT(MinSurvivorRatio)) { |
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1492 FLAG_SET_DEFAULT(MinSurvivorRatio, SurvivorRatio + 2); |
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1493 } |
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1494 } |
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1495 |
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1496 if (UseParallelOldGC) { |
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1497 // Par compact uses lower default values since they are treated as |
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1498 // minimums. These are different defaults because of the different |
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1499 // interpretation and are not ergonomically set. |
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1500 if (FLAG_IS_DEFAULT(MarkSweepDeadRatio)) { |
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1501 FLAG_SET_DEFAULT(MarkSweepDeadRatio, 1); |
0 | 1502 } |
1503 } | |
1504 } | |
1505 | |
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1506 void Arguments::set_g1_gc_flags() { |
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1507 assert(UseG1GC, "Error"); |
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1508 #ifdef COMPILER1 |
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1509 FastTLABRefill = false; |
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1510 #endif |
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1511 FLAG_SET_DEFAULT(ParallelGCThreads, |
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1512 Abstract_VM_Version::parallel_worker_threads()); |
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1513 if (ParallelGCThreads == 0) { |
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1514 FLAG_SET_DEFAULT(ParallelGCThreads, |
751 | 1515 Abstract_VM_Version::parallel_worker_threads()); |
342
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1516 } |
751 | 1517 |
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1518 // MarkStackSize will be set (if it hasn't been set by the user) |
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1519 // when concurrent marking is initialized. |
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1520 // Its value will be based upon the number of parallel marking threads. |
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1521 // But we do set the maximum mark stack size here. |
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1522 if (FLAG_IS_DEFAULT(MarkStackSizeMax)) { |
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1523 FLAG_SET_DEFAULT(MarkStackSizeMax, 128 * TASKQUEUE_SIZE); |
1284 | 1524 } |
1356 | 1525 |
1526 if (FLAG_IS_DEFAULT(GCTimeRatio) || GCTimeRatio == 0) { | |
1527 // In G1, we want the default GC overhead goal to be higher than | |
1528 // say in PS. So we set it here to 10%. Otherwise the heap might | |
1529 // be expanded more aggressively than we would like it to. In | |
1530 // fact, even 10% seems to not be high enough in some cases | |
1531 // (especially small GC stress tests that the main thing they do | |
1532 // is allocation). We might consider increase it further. | |
1533 FLAG_SET_DEFAULT(GCTimeRatio, 9); | |
1534 } | |
7397
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1535 |
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1536 if (PrintGCDetails && Verbose) { |
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1537 tty->print_cr("MarkStackSize: %uk MarkStackSizeMax: %uk", |
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1538 MarkStackSize / K, MarkStackSizeMax / K); |
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1539 tty->print_cr("ConcGCThreads: %u", ConcGCThreads); |
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1540 } |
342
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1541 } |
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1542 |
1064 | 1543 void Arguments::set_heap_size() { |
1544 if (!FLAG_IS_DEFAULT(DefaultMaxRAMFraction)) { | |
1545 // Deprecated flag | |
1546 FLAG_SET_CMDLINE(uintx, MaxRAMFraction, DefaultMaxRAMFraction); | |
1547 } | |
1548 | |
1549 const julong phys_mem = | |
1550 FLAG_IS_DEFAULT(MaxRAM) ? MIN2(os::physical_memory(), (julong)MaxRAM) | |
1551 : (julong)MaxRAM; | |
1552 | |
1553 // If the maximum heap size has not been set with -Xmx, | |
1554 // then set it as fraction of the size of physical memory, | |
1555 // respecting the maximum and minimum sizes of the heap. | |
342
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1556 if (FLAG_IS_DEFAULT(MaxHeapSize)) { |
1064 | 1557 julong reasonable_max = phys_mem / MaxRAMFraction; |
1558 | |
1559 if (phys_mem <= MaxHeapSize * MinRAMFraction) { | |
1560 // Small physical memory, so use a minimum fraction of it for the heap | |
1561 reasonable_max = phys_mem / MinRAMFraction; | |
1562 } else { | |
1563 // Not-small physical memory, so require a heap at least | |
1564 // as large as MaxHeapSize | |
1565 reasonable_max = MAX2(reasonable_max, (julong)MaxHeapSize); | |
1566 } | |
1567 if (!FLAG_IS_DEFAULT(ErgoHeapSizeLimit) && ErgoHeapSizeLimit != 0) { | |
1568 // Limit the heap size to ErgoHeapSizeLimit | |
1569 reasonable_max = MIN2(reasonable_max, (julong)ErgoHeapSizeLimit); | |
342
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1570 } |
1064 | 1571 if (UseCompressedOops) { |
1572 // Limit the heap size to the maximum possible when using compressed oops | |
1963 | 1573 julong max_coop_heap = (julong)max_heap_for_compressed_oops(); |
1574 if (HeapBaseMinAddress + MaxHeapSize < max_coop_heap) { | |
1575 // Heap should be above HeapBaseMinAddress to get zero based compressed oops | |
1576 // but it should be not less than default MaxHeapSize. | |
1577 max_coop_heap -= HeapBaseMinAddress; | |
1578 } | |
1579 reasonable_max = MIN2(reasonable_max, max_coop_heap); | |
1064 | 1580 } |
1581 reasonable_max = os::allocatable_physical_memory(reasonable_max); | |
1582 | |
1583 if (!FLAG_IS_DEFAULT(InitialHeapSize)) { | |
1584 // An initial heap size was specified on the command line, | |
1585 // so be sure that the maximum size is consistent. Done | |
1586 // after call to allocatable_physical_memory because that | |
1587 // method might reduce the allocation size. | |
1588 reasonable_max = MAX2(reasonable_max, (julong)InitialHeapSize); | |
1589 } | |
1590 | |
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1591 if (PrintGCDetails && Verbose) { |
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1592 // Cannot use gclog_or_tty yet. |
1064 | 1593 tty->print_cr(" Maximum heap size " SIZE_FORMAT, reasonable_max); |
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1594 } |
1064 | 1595 FLAG_SET_ERGO(uintx, MaxHeapSize, (uintx)reasonable_max); |
1596 } | |
1597 | |
1598 // If the initial_heap_size has not been set with InitialHeapSize | |
1599 // or -Xms, then set it as fraction of the size of physical memory, | |
1600 // respecting the maximum and minimum sizes of the heap. | |
1601 if (FLAG_IS_DEFAULT(InitialHeapSize)) { | |
1074
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1602 julong reasonable_minimum = (julong)(OldSize + NewSize); |
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1603 |
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1604 reasonable_minimum = MIN2(reasonable_minimum, (julong)MaxHeapSize); |
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1605 |
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1606 reasonable_minimum = os::allocatable_physical_memory(reasonable_minimum); |
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1607 |
1064 | 1608 julong reasonable_initial = phys_mem / InitialRAMFraction; |
1609 | |
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|
1610 reasonable_initial = MAX2(reasonable_initial, reasonable_minimum); |
1064 | 1611 reasonable_initial = MIN2(reasonable_initial, (julong)MaxHeapSize); |
1612 | |
1613 reasonable_initial = os::allocatable_physical_memory(reasonable_initial); | |
1614 | |
1615 if (PrintGCDetails && Verbose) { | |
1616 // Cannot use gclog_or_tty yet. | |
1617 tty->print_cr(" Initial heap size " SIZE_FORMAT, (uintx)reasonable_initial); | |
1074
84cb6f20afb3
6900899: vm fails to start when -Xmx value is less than OldSize + NewSize
phh
parents:
1069
diff
changeset
|
1618 tty->print_cr(" Minimum heap size " SIZE_FORMAT, (uintx)reasonable_minimum); |
342
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
135
diff
changeset
|
1619 } |
1064 | 1620 FLAG_SET_ERGO(uintx, InitialHeapSize, (uintx)reasonable_initial); |
1074
84cb6f20afb3
6900899: vm fails to start when -Xmx value is less than OldSize + NewSize
phh
parents:
1069
diff
changeset
|
1621 set_min_heap_size((uintx)reasonable_minimum); |
342
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
135
diff
changeset
|
1622 } |
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
135
diff
changeset
|
1623 } |
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
135
diff
changeset
|
1624 |
0 | 1625 // This must be called after ergonomics because we want bytecode rewriting |
1626 // if the server compiler is used, or if UseSharedSpaces is disabled. | |
1627 void Arguments::set_bytecode_flags() { | |
1628 // Better not attempt to store into a read-only space. | |
1629 if (UseSharedSpaces) { | |
1630 FLAG_SET_DEFAULT(RewriteBytecodes, false); | |
1631 FLAG_SET_DEFAULT(RewriteFrequentPairs, false); | |
1632 } | |
1633 | |
1634 if (!RewriteBytecodes) { | |
1635 FLAG_SET_DEFAULT(RewriteFrequentPairs, false); | |
1636 } | |
1637 } | |
1638 | |
1639 // Aggressive optimization flags -XX:+AggressiveOpts | |
1640 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
|
1641 #ifdef COMPILER2 |
ff5961f4c095
6395208: Elide autoboxing for calls to HashMap.get(int) and HashMap.get(long)
never
parents:
0
diff
changeset
|
1642 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
|
1643 if (FLAG_IS_DEFAULT(EliminateAutoBox)) { |
ff5961f4c095
6395208: Elide autoboxing for calls to HashMap.get(int) and HashMap.get(long)
never
parents:
0
diff
changeset
|
1644 FLAG_SET_DEFAULT(EliminateAutoBox, true); |
ff5961f4c095
6395208: Elide autoboxing for calls to HashMap.get(int) and HashMap.get(long)
never
parents:
0
diff
changeset
|
1645 } |
ff5961f4c095
6395208: Elide autoboxing for calls to HashMap.get(int) and HashMap.get(long)
never
parents:
0
diff
changeset
|
1646 if (FLAG_IS_DEFAULT(AutoBoxCacheMax)) { |
ff5961f4c095
6395208: Elide autoboxing for calls to HashMap.get(int) and HashMap.get(long)
never
parents:
0
diff
changeset
|
1647 FLAG_SET_DEFAULT(AutoBoxCacheMax, 20000); |
ff5961f4c095
6395208: Elide autoboxing for calls to HashMap.get(int) and HashMap.get(long)
never
parents:
0
diff
changeset
|
1648 } |
ff5961f4c095
6395208: Elide autoboxing for calls to HashMap.get(int) and HashMap.get(long)
never
parents:
0
diff
changeset
|
1649 |
ff5961f4c095
6395208: Elide autoboxing for calls to HashMap.get(int) and HashMap.get(long)
never
parents:
0
diff
changeset
|
1650 // 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
|
1651 char buffer[1024]; |
513
2328d1d3f8cf
6781583: Hotspot build fails on linux 64 bit platform with gcc 4.3.2
xlu
parents:
489
diff
changeset
|
1652 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
|
1653 add_property(buffer); |
ff5961f4c095
6395208: Elide autoboxing for calls to HashMap.get(int) and HashMap.get(long)
never
parents:
0
diff
changeset
|
1654 } |
416
b6cfd754403d
6649622: HotSpot Biased locking needs tuning on latest CPUs
never
parents:
363
diff
changeset
|
1655 if (AggressiveOpts && FLAG_IS_DEFAULT(BiasedLockingStartupDelay)) { |
b6cfd754403d
6649622: HotSpot Biased locking needs tuning on latest CPUs
never
parents:
363
diff
changeset
|
1656 FLAG_SET_DEFAULT(BiasedLockingStartupDelay, 500); |
b6cfd754403d
6649622: HotSpot Biased locking needs tuning on latest CPUs
never
parents:
363
diff
changeset
|
1657 } |
17
ff5961f4c095
6395208: Elide autoboxing for calls to HashMap.get(int) and HashMap.get(long)
never
parents:
0
diff
changeset
|
1658 #endif |
ff5961f4c095
6395208: Elide autoboxing for calls to HashMap.get(int) and HashMap.get(long)
never
parents:
0
diff
changeset
|
1659 |
0 | 1660 if (AggressiveOpts) { |
61 | 1661 // Sample flag setting code |
1662 // if (FLAG_IS_DEFAULT(EliminateZeroing)) { | |
1663 // FLAG_SET_DEFAULT(EliminateZeroing, true); | |
1664 // } | |
0 | 1665 } |
1666 } | |
1667 | |
1668 //=========================================================================================================== | |
1669 // Parsing of java.compiler property | |
1670 | |
1671 void Arguments::process_java_compiler_argument(char* arg) { | |
1672 // For backwards compatibility, Djava.compiler=NONE or "" | |
1673 // causes us to switch to -Xint mode UNLESS -Xdebug | |
1674 // is also specified. | |
1675 if (strlen(arg) == 0 || strcasecmp(arg, "NONE") == 0) { | |
1676 set_java_compiler(true); // "-Djava.compiler[=...]" most recently seen. | |
1677 } | |
1678 } | |
1679 | |
1680 void Arguments::process_java_launcher_argument(const char* launcher, void* extra_info) { | |
1681 _sun_java_launcher = strdup(launcher); | |
2302
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
1682 if (strcmp("gamma", _sun_java_launcher) == 0) { |
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
1683 _created_by_gamma_launcher = true; |
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
1684 } |
0 | 1685 } |
1686 | |
1687 bool Arguments::created_by_java_launcher() { | |
1688 assert(_sun_java_launcher != NULL, "property must have value"); | |
1689 return strcmp(DEFAULT_JAVA_LAUNCHER, _sun_java_launcher) != 0; | |
1690 } | |
1691 | |
2302
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
1692 bool Arguments::created_by_gamma_launcher() { |
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
1693 return _created_by_gamma_launcher; |
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
1694 } |
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
1695 |
0 | 1696 //=========================================================================================================== |
1697 // Parsing of main arguments | |
1698 | |
1244
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
1699 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
|
1700 uintx max, const char* name) { |
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
1701 // 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
|
1702 // false, otherwise. |
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
1703 if (val >= min && val <= max) { |
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
1704 return true; |
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
1705 } |
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
1706 jio_fprintf(defaultStream::error_stream(), |
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
1707 "%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
|
1708 " and " UINTX_FORMAT "\n", |
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
1709 name, val, min, max); |
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
1710 return false; |
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
1711 } |
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
1712 |
1744
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
ptisnovs
parents:
1681
diff
changeset
|
1713 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
|
1714 // 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
|
1715 // false, otherwise. |
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
ptisnovs
parents:
1681
diff
changeset
|
1716 if (val >= min ) { |
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
ptisnovs
parents:
1681
diff
changeset
|
1717 return true; |
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
ptisnovs
parents:
1681
diff
changeset
|
1718 } |
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
ptisnovs
parents:
1681
diff
changeset
|
1719 jio_fprintf(defaultStream::error_stream(), |
2366
1fb790245268
6820066: Check that -XX:ParGCArrayScanChunk has a value larger than zero.
jwilhelm
parents:
2362
diff
changeset
|
1720 "%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
|
1721 name, val, min); |
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
ptisnovs
parents:
1681
diff
changeset
|
1722 return false; |
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
ptisnovs
parents:
1681
diff
changeset
|
1723 } |
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
ptisnovs
parents:
1681
diff
changeset
|
1724 |
0 | 1725 bool Arguments::verify_percentage(uintx value, const char* name) { |
1726 if (value <= 100) { | |
1727 return true; | |
1728 } | |
1729 jio_fprintf(defaultStream::error_stream(), | |
1730 "%s of " UINTX_FORMAT " is invalid; must be between 0 and 100\n", | |
1731 name, value); | |
1732 return false; | |
1733 } | |
1734 | |
1064 | 1735 static void force_serial_gc() { |
0 | 1736 FLAG_SET_DEFAULT(UseSerialGC, true); |
1737 FLAG_SET_DEFAULT(UseParNewGC, false); | |
1738 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
|
1739 FLAG_SET_DEFAULT(CMSIncrementalMode, false); // special CMS suboption |
0 | 1740 FLAG_SET_DEFAULT(UseParallelGC, false); |
1741 FLAG_SET_DEFAULT(UseParallelOldGC, false); | |
342
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
135
diff
changeset
|
1742 FLAG_SET_DEFAULT(UseG1GC, false); |
0 | 1743 } |
1744 | |
1745 static bool verify_serial_gc_flags() { | |
1746 return (UseSerialGC && | |
945
68ef3fdcdb76
6872136: CMS: confusing message may be printed when a collector is switched off implicitly
ysr
parents:
932
diff
changeset
|
1747 !(UseParNewGC || (UseConcMarkSweepGC || CMSIncrementalMode) || UseG1GC || |
342
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
135
diff
changeset
|
1748 UseParallelGC || UseParallelOldGC)); |
0 | 1749 } |
1750 | |
3767
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3349
diff
changeset
|
1751 // check if do gclog rotation |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3349
diff
changeset
|
1752 // +UseGCLogFileRotation is a must, |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3349
diff
changeset
|
1753 // 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
|
1754 // 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
|
1755 void check_gclog_consistency() { |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3349
diff
changeset
|
1756 if (UseGCLogFileRotation) { |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3349
diff
changeset
|
1757 if ((Arguments::gc_log_filename() == NULL) || |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3349
diff
changeset
|
1758 (NumberOfGCLogFiles == 0) || |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3349
diff
changeset
|
1759 (GCLogFileSize == 0)) { |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3349
diff
changeset
|
1760 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
|
1761 "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
|
1762 "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
|
1763 "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
|
1764 UseGCLogFileRotation = false; |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3349
diff
changeset
|
1765 } |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3349
diff
changeset
|
1766 } |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3349
diff
changeset
|
1767 |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3349
diff
changeset
|
1768 if (UseGCLogFileRotation && GCLogFileSize < 8*K) { |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3349
diff
changeset
|
1769 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
|
1770 jio_fprintf(defaultStream::output_stream(), |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3349
diff
changeset
|
1771 "GCLogFileSize changed to minimum 8K\n"); |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3349
diff
changeset
|
1772 } |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3349
diff
changeset
|
1773 } |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3349
diff
changeset
|
1774 |
10
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1775 // Check consistency of GC selection |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1776 bool Arguments::check_gc_consistency() { |
3767
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3349
diff
changeset
|
1777 check_gclog_consistency(); |
10
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1778 bool status = true; |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1779 // 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
|
1780 // 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
|
1781 // 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
|
1782 // 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
|
1783 // 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
|
1784 // 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
|
1785 // select conflicting combinations. |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1786 uint i = 0; |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1787 if (UseSerialGC) i++; |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1788 if (UseConcMarkSweepGC || UseParNewGC) i++; |
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1789 if (UseParallelGC || UseParallelOldGC) i++; |
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1790 if (UseG1GC) i++; |
10
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1791 if (i > 1) { |
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1792 jio_fprintf(defaultStream::error_stream(), |
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1793 "Conflicting collector combinations in option list; " |
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1794 "please refer to the release notes for the combinations " |
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1795 "allowed\n"); |
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1796 status = false; |
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1797 } |
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1798 |
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1799 return status; |
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1800 } |
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1801 |
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1802 void Arguments::check_deprecated_gcs() { |
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1803 if (UseConcMarkSweepGC && !UseParNewGC) { |
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1804 warning("Using the DefNew young collector with the CMS collector is deprecated " |
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1805 "and will likely be removed in a future release"); |
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1806 } |
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1807 |
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1808 if (UseParNewGC && !UseConcMarkSweepGC) { |
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1809 // !UseConcMarkSweepGC means that we are using serial old gc. Unfortunately we don't |
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1810 // set up UseSerialGC properly, so that can't be used in the check here. |
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1811 warning("Using the ParNew young collector with the Serial old collector is deprecated " |
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1812 "and will likely be removed in a future release"); |
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1813 } |
7453 | 1814 |
1815 if (CMSIncrementalMode) { | |
1816 warning("Using incremental CMS is deprecated and will likely be removed in a future release"); | |
1817 } | |
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1818 } |
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1819 |
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1820 // Check stack pages settings |
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1821 bool Arguments::check_stack_pages() |
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1822 { |
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1823 bool status = true; |
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1824 status = status && verify_min_value(StackYellowPages, 1, "StackYellowPages"); |
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1825 status = status && verify_min_value(StackRedPages, 1, "StackRedPages"); |
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1826 // greater stack shadow pages can't generate instruction to bang stack |
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1827 status = status && verify_interval(StackShadowPages, 1, 50, "StackShadowPages"); |
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1828 return status; |
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1829 } |
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1830 |
0 | 1831 // Check the consistency of vm_init_args |
1832 bool Arguments::check_vm_args_consistency() { | |
1833 // Method for adding checks for flag consistency. | |
1834 // The intent is to warn the user of all possible conflicts, | |
1835 // before returning an error. | |
1836 // Note: Needs platform-dependent factoring. | |
1837 bool status = true; | |
1838 | |
1839 #if ( (defined(COMPILER2) && defined(SPARC))) | |
1840 // NOTE: The call to VM_Version_init depends on the fact that VM_Version_init | |
1841 // on sparc doesn't require generation of a stub as is the case on, e.g., | |
1842 // x86. Normally, VM_Version_init must be called from init_globals in | |
1843 // init.cpp, which is called by the initial java thread *after* arguments | |
1844 // have been parsed. VM_Version_init gets called twice on sparc. | |
1845 extern void VM_Version_init(); | |
1846 VM_Version_init(); | |
1847 if (!VM_Version::has_v9()) { | |
1848 jio_fprintf(defaultStream::error_stream(), | |
1849 "V8 Machine detected, Server requires V9\n"); | |
1850 status = false; | |
1851 } | |
1852 #endif /* COMPILER2 && SPARC */ | |
1853 | |
1854 // Allow both -XX:-UseStackBanging and -XX:-UseBoundThreads in non-product | |
1855 // builds so the cost of stack banging can be measured. | |
1856 #if (defined(PRODUCT) && defined(SOLARIS)) | |
1857 if (!UseBoundThreads && !UseStackBanging) { | |
1858 jio_fprintf(defaultStream::error_stream(), | |
1859 "-UseStackBanging conflicts with -UseBoundThreads\n"); | |
1860 | |
1861 status = false; | |
1862 } | |
1863 #endif | |
1864 | |
1865 if (TLABRefillWasteFraction == 0) { | |
1866 jio_fprintf(defaultStream::error_stream(), | |
1867 "TLABRefillWasteFraction should be a denominator, " | |
1868 "not " SIZE_FORMAT "\n", | |
1869 TLABRefillWasteFraction); | |
1870 status = false; | |
1871 } | |
1872 | |
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1873 status = status && verify_percentage(AdaptiveSizePolicyWeight, |
0 | 1874 "AdaptiveSizePolicyWeight"); |
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1875 status = status && verify_percentage(ThresholdTolerance, "ThresholdTolerance"); |
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1876 status = status && verify_percentage(MinHeapFreeRatio, "MinHeapFreeRatio"); |
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1877 status = status && verify_percentage(MaxHeapFreeRatio, "MaxHeapFreeRatio"); |
0 | 1878 |
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1879 // Divide by bucket size to prevent a large size from causing rollover when |
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1880 // calculating amount of memory needed to be allocated for the String table. |
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1881 status = status && verify_interval(StringTableSize, defaultStringTableSize, |
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1882 (max_uintx / StringTable::bucket_size()), "StringTable size"); |
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1883 |
0 | 1884 if (MinHeapFreeRatio > MaxHeapFreeRatio) { |
1885 jio_fprintf(defaultStream::error_stream(), | |
1886 "MinHeapFreeRatio (" UINTX_FORMAT ") must be less than or " | |
1887 "equal to MaxHeapFreeRatio (" UINTX_FORMAT ")\n", | |
1888 MinHeapFreeRatio, MaxHeapFreeRatio); | |
1889 status = false; | |
1890 } | |
1891 // Keeping the heap 100% free is hard ;-) so limit it to 99%. | |
1892 MinHeapFreeRatio = MIN2(MinHeapFreeRatio, (uintx) 99); | |
1893 | |
1894 if (FullGCALot && FLAG_IS_DEFAULT(MarkSweepAlwaysCompactCount)) { | |
1895 MarkSweepAlwaysCompactCount = 1; // Move objects every gc. | |
1896 } | |
1897 | |
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1898 if (UseParallelOldGC && ParallelOldGCSplitALot) { |
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1899 // Settings to encourage splitting. |
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1900 if (!FLAG_IS_CMDLINE(NewRatio)) { |
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1901 FLAG_SET_CMDLINE(intx, NewRatio, 2); |
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1902 } |
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1903 if (!FLAG_IS_CMDLINE(ScavengeBeforeFullGC)) { |
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1904 FLAG_SET_CMDLINE(bool, ScavengeBeforeFullGC, false); |
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1905 } |
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1906 } |
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1907 |
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1908 status = status && verify_percentage(GCHeapFreeLimit, "GCHeapFreeLimit"); |
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1909 status = status && verify_percentage(GCTimeLimit, "GCTimeLimit"); |
0 | 1910 if (GCTimeLimit == 100) { |
1911 // Turn off gc-overhead-limit-exceeded checks | |
1912 FLAG_SET_DEFAULT(UseGCOverheadLimit, false); | |
1913 } | |
1914 | |
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1915 status = status && verify_percentage(GCHeapFreeLimit, "GCHeapFreeLimit"); |
0 | 1916 |
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1917 status = status && check_gc_consistency(); |
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1918 status = status && check_stack_pages(); |
0 | 1919 |
1920 if (_has_alloc_profile) { | |
1921 if (UseParallelGC || UseParallelOldGC) { | |
1922 jio_fprintf(defaultStream::error_stream(), | |
1923 "error: invalid argument combination.\n" | |
1924 "Allocation profiling (-Xaprof) cannot be used together with " | |
1925 "Parallel GC (-XX:+UseParallelGC or -XX:+UseParallelOldGC).\n"); | |
1926 status = false; | |
1927 } | |
1928 if (UseConcMarkSweepGC) { | |
1929 jio_fprintf(defaultStream::error_stream(), | |
1930 "error: invalid argument combination.\n" | |
1931 "Allocation profiling (-Xaprof) cannot be used together with " | |
1932 "the CMS collector (-XX:+UseConcMarkSweepGC).\n"); | |
1933 status = false; | |
1934 } | |
1935 } | |
1936 | |
1937 if (CMSIncrementalMode) { | |
1938 if (!UseConcMarkSweepGC) { | |
1939 jio_fprintf(defaultStream::error_stream(), | |
1940 "error: invalid argument combination.\n" | |
1941 "The CMS collector (-XX:+UseConcMarkSweepGC) must be " | |
1942 "selected in order\nto use CMSIncrementalMode.\n"); | |
1943 status = false; | |
1944 } else { | |
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1945 status = status && verify_percentage(CMSIncrementalDutyCycle, |
0 | 1946 "CMSIncrementalDutyCycle"); |
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1947 status = status && verify_percentage(CMSIncrementalDutyCycleMin, |
0 | 1948 "CMSIncrementalDutyCycleMin"); |
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1949 status = status && verify_percentage(CMSIncrementalSafetyFactor, |
0 | 1950 "CMSIncrementalSafetyFactor"); |
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1951 status = status && verify_percentage(CMSIncrementalOffset, |
0 | 1952 "CMSIncrementalOffset"); |
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1953 status = status && verify_percentage(CMSExpAvgFactor, |
0 | 1954 "CMSExpAvgFactor"); |
1955 // If it was not set on the command line, set | |
1956 // CMSInitiatingOccupancyFraction to 1 so icms can initiate cycles early. | |
1957 if (CMSInitiatingOccupancyFraction < 0) { | |
1958 FLAG_SET_DEFAULT(CMSInitiatingOccupancyFraction, 1); | |
1959 } | |
1960 } | |
1961 } | |
1962 | |
1963 // CMS space iteration, which FLSVerifyAllHeapreferences entails, | |
1964 // insists that we hold the requisite locks so that the iteration is | |
1965 // MT-safe. For the verification at start-up and shut-down, we don't | |
1966 // yet have a good way of acquiring and releasing these locks, | |
1967 // which are not visible at the CollectedHeap level. We want to | |
1968 // be able to acquire these locks and then do the iteration rather | |
1969 // than just disable the lock verification. This will be fixed under | |
1970 // bug 4788986. | |
1971 if (UseConcMarkSweepGC && FLSVerifyAllHeapReferences) { | |
1972 if (VerifyGCStartAt == 0) { | |
1973 warning("Heap verification at start-up disabled " | |
1974 "(due to current incompatibility with FLSVerifyAllHeapReferences)"); | |
1975 VerifyGCStartAt = 1; // Disable verification at start-up | |
1976 } | |
1977 if (VerifyBeforeExit) { | |
1978 warning("Heap verification at shutdown disabled " | |
1979 "(due to current incompatibility with FLSVerifyAllHeapReferences)"); | |
1980 VerifyBeforeExit = false; // Disable verification at shutdown | |
1981 } | |
1982 } | |
1983 | |
1984 // Note: only executed in non-PRODUCT mode | |
1985 if (!UseAsyncConcMarkSweepGC && | |
1986 (ExplicitGCInvokesConcurrent || | |
1987 ExplicitGCInvokesConcurrentAndUnloadsClasses)) { | |
1988 jio_fprintf(defaultStream::error_stream(), | |
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1989 "error: +ExplicitGCInvokesConcurrent[AndUnloadsClasses] conflicts" |
0 | 1990 " with -UseAsyncConcMarkSweepGC"); |
1991 status = false; | |
1992 } | |
1993 | |
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1994 status = status && verify_min_value(ParGCArrayScanChunk, 1, "ParGCArrayScanChunk"); |
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1995 |
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1996 #ifndef SERIALGC |
1283
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1997 if (UseG1GC) { |
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1998 status = status && verify_percentage(InitiatingHeapOccupancyPercent, |
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1999 "InitiatingHeapOccupancyPercent"); |
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2000 status = status && verify_min_value(G1RefProcDrainInterval, 1, |
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2001 "G1RefProcDrainInterval"); |
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2002 status = status && verify_min_value((intx)G1ConcMarkStepDurationMillis, 1, |
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2003 "G1ConcMarkStepDurationMillis"); |
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|
2004 } |
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2005 #endif |
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2006 |
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|
2007 status = status && verify_interval(RefDiscoveryPolicy, |
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|
2008 ReferenceProcessor::DiscoveryPolicyMin, |
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|
2009 ReferenceProcessor::DiscoveryPolicyMax, |
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|
2010 "RefDiscoveryPolicy"); |
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|
2011 |
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|
2012 // Limit the lower bound of this flag to 1 as it is used in a division |
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2013 // expression. |
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2014 status = status && verify_interval(TLABWasteTargetPercent, |
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2015 1, 100, "TLABWasteTargetPercent"); |
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2016 |
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|
2017 status = status && verify_object_alignment(); |
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|
2018 |
6736
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diff
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|
2019 status = status && verify_min_value(ClassMetaspaceSize, 1*M, |
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2020 "ClassMetaspaceSize"); |
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2021 |
7397
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|
2022 status = status && verify_interval(MarkStackSizeMax, |
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|
2023 1, (max_jint - 1), "MarkStackSizeMax"); |
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|
2024 |
6755
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|
2025 #ifdef SPARC |
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|
2026 if (UseConcMarkSweepGC || UseG1GC) { |
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|
2027 // Issue a stern warning if the user has explicitly set |
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|
2028 // UseMemSetInBOT (it is known to cause issues), but allow |
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|
2029 // use for experimentation and debugging. |
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|
2030 if (VM_Version::is_sun4v() && UseMemSetInBOT) { |
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|
2031 assert(!FLAG_IS_DEFAULT(UseMemSetInBOT), "Error"); |
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|
2032 warning("Experimental flag -XX:+UseMemSetInBOT is known to cause instability" |
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|
2033 " on sun4v; please understand that you are using at your own risk!"); |
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|
2034 } |
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|
2035 } |
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|
2036 #endif // SPARC |
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|
2037 |
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|
2038 if (PrintNMTStatistics) { |
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|
2039 #if INCLUDE_NMT |
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|
2040 if (MemTracker::tracking_level() == MemTracker::NMT_off) { |
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|
2041 #endif // INCLUDE_NMT |
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|
2042 warning("PrintNMTStatistics is disabled, because native memory tracking is not enabled"); |
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|
2043 PrintNMTStatistics = false; |
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|
2044 #if INCLUDE_NMT |
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|
2045 } |
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|
2046 #endif |
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|
2047 } |
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|
2048 |
0 | 2049 return status; |
2050 } | |
2051 | |
2052 bool Arguments::is_bad_option(const JavaVMOption* option, jboolean ignore, | |
2053 const char* option_type) { | |
2054 if (ignore) return false; | |
2055 | |
2056 const char* spacer = " "; | |
2057 if (option_type == NULL) { | |
2058 option_type = ++spacer; // Set both to the empty string. | |
2059 } | |
2060 | |
2061 if (os::obsolete_option(option)) { | |
2062 jio_fprintf(defaultStream::error_stream(), | |
2063 "Obsolete %s%soption: %s\n", option_type, spacer, | |
2064 option->optionString); | |
2065 return false; | |
2066 } else { | |
2067 jio_fprintf(defaultStream::error_stream(), | |
2068 "Unrecognized %s%soption: %s\n", option_type, spacer, | |
2069 option->optionString); | |
2070 return true; | |
2071 } | |
2072 } | |
2073 | |
2074 static const char* user_assertion_options[] = { | |
2075 "-da", "-ea", "-disableassertions", "-enableassertions", 0 | |
2076 }; | |
2077 | |
2078 static const char* system_assertion_options[] = { | |
2079 "-dsa", "-esa", "-disablesystemassertions", "-enablesystemassertions", 0 | |
2080 }; | |
2081 | |
2082 // Return true if any of the strings in null-terminated array 'names' matches. | |
2083 // If tail_allowed is true, then the tail must begin with a colon; otherwise, | |
2084 // the option must match exactly. | |
2085 static bool match_option(const JavaVMOption* option, const char** names, const char** tail, | |
2086 bool tail_allowed) { | |
2087 for (/* empty */; *names != NULL; ++names) { | |
2088 if (match_option(option, *names, tail)) { | |
2089 if (**tail == '\0' || tail_allowed && **tail == ':') { | |
2090 return true; | |
2091 } | |
2092 } | |
2093 } | |
2094 return false; | |
2095 } | |
2096 | |
1284 | 2097 bool Arguments::parse_uintx(const char* value, |
2098 uintx* uintx_arg, | |
2099 uintx min_size) { | |
2100 | |
2101 // Check the sign first since atomull() parses only unsigned values. | |
2102 bool value_is_positive = !(*value == '-'); | |
2103 | |
2104 if (value_is_positive) { | |
2105 julong n; | |
2106 bool good_return = atomull(value, &n); | |
2107 if (good_return) { | |
2108 bool above_minimum = n >= min_size; | |
2109 bool value_is_too_large = n > max_uintx; | |
2110 | |
2111 if (above_minimum && !value_is_too_large) { | |
2112 *uintx_arg = n; | |
2113 return true; | |
2114 } | |
2115 } | |
2116 } | |
2117 return false; | |
2118 } | |
2119 | |
0 | 2120 Arguments::ArgsRange Arguments::parse_memory_size(const char* s, |
489
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|
2121 julong* long_arg, |
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|
2122 julong min_size) { |
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|
2123 if (!atomull(s, long_arg)) return arg_unreadable; |
0 | 2124 return check_memory_size(*long_arg, min_size); |
2125 } | |
2126 | |
2127 // Parse JavaVMInitArgs structure | |
2128 | |
2129 jint Arguments::parse_vm_init_args(const JavaVMInitArgs* args) { | |
2130 // For components of the system classpath. | |
2131 SysClassPath scp(Arguments::get_sysclasspath()); | |
2132 bool scp_assembly_required = false; | |
2133 | |
2134 // Save default settings for some mode flags | |
2135 Arguments::_AlwaysCompileLoopMethods = AlwaysCompileLoopMethods; | |
2136 Arguments::_UseOnStackReplacement = UseOnStackReplacement; | |
2137 Arguments::_ClipInlining = ClipInlining; | |
2138 Arguments::_BackgroundCompilation = BackgroundCompilation; | |
2139 | |
3341
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|
2140 // Setup flags for mixed which is the default |
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|
2141 set_mode_flags(_mixed); |
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|
2142 |
0 | 2143 // Parse JAVA_TOOL_OPTIONS environment variable (if present) |
2144 jint result = parse_java_tool_options_environment_variable(&scp, &scp_assembly_required); | |
2145 if (result != JNI_OK) { | |
2146 return result; | |
2147 } | |
2148 | |
2149 // Parse JavaVMInitArgs structure passed in | |
2150 result = parse_each_vm_init_arg(args, &scp, &scp_assembly_required, COMMAND_LINE); | |
2151 if (result != JNI_OK) { | |
2152 return result; | |
2153 } | |
2154 | |
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|
2155 if (AggressiveOpts) { |
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|
2156 // Insert alt-rt.jar between user-specified bootclasspath |
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|
2157 // prefix and the default bootclasspath. os::set_boot_path() |
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|
2158 // uses meta_index_dir as the default bootclasspath directory. |
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|
2159 const char* altclasses_jar = "alt-rt.jar"; |
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|
2160 size_t altclasses_path_len = strlen(get_meta_index_dir()) + 1 + |
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|
2161 strlen(altclasses_jar); |
6197 | 2162 char* altclasses_path = NEW_C_HEAP_ARRAY(char, altclasses_path_len, mtInternal); |
531
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|
2163 strcpy(altclasses_path, get_meta_index_dir()); |
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|
2164 strcat(altclasses_path, altclasses_jar); |
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|
2165 scp.add_suffix_to_prefix(altclasses_path); |
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|
2166 scp_assembly_required = true; |
6197 | 2167 FREE_C_HEAP_ARRAY(char, altclasses_path, mtInternal); |
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|
2168 } |
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|
2169 |
5915 | 2170 if (WhiteBoxAPI) { |
2171 // Append wb.jar to bootclasspath if enabled | |
2172 const char* wb_jar = "wb.jar"; | |
2173 size_t wb_path_len = strlen(get_meta_index_dir()) + 1 + | |
2174 strlen(wb_jar); | |
6197 | 2175 char* wb_path = NEW_C_HEAP_ARRAY(char, wb_path_len, mtInternal); |
5915 | 2176 strcpy(wb_path, get_meta_index_dir()); |
2177 strcat(wb_path, wb_jar); | |
2178 scp.add_suffix(wb_path); | |
2179 scp_assembly_required = true; | |
6197 | 2180 FREE_C_HEAP_ARRAY(char, wb_path, mtInternal); |
5915 | 2181 } |
2182 | |
0 | 2183 // Parse _JAVA_OPTIONS environment variable (if present) (mimics classic VM) |
2184 result = parse_java_options_environment_variable(&scp, &scp_assembly_required); | |
2185 if (result != JNI_OK) { | |
2186 return result; | |
2187 } | |
2188 | |
2189 // Do final processing now that all arguments have been parsed | |
2190 result = finalize_vm_init_args(&scp, scp_assembly_required); | |
2191 if (result != JNI_OK) { | |
2192 return result; | |
2193 } | |
2194 | |
2195 return JNI_OK; | |
2196 } | |
2197 | |
2198 jint Arguments::parse_each_vm_init_arg(const JavaVMInitArgs* args, | |
2199 SysClassPath* scp_p, | |
2200 bool* scp_assembly_required_p, | |
2201 FlagValueOrigin origin) { | |
2202 // Remaining part of option string | |
2203 const char* tail; | |
2204 | |
2205 // iterate over arguments | |
2206 for (int index = 0; index < args->nOptions; index++) { | |
2207 bool is_absolute_path = false; // for -agentpath vs -agentlib | |
2208 | |
2209 const JavaVMOption* option = args->options + index; | |
2210 | |
2211 if (!match_option(option, "-Djava.class.path", &tail) && | |
2212 !match_option(option, "-Dsun.java.command", &tail) && | |
2213 !match_option(option, "-Dsun.java.launcher", &tail)) { | |
2214 | |
2215 // add all jvm options to the jvm_args string. This string | |
2216 // is used later to set the java.vm.args PerfData string constant. | |
2217 // the -Djava.class.path and the -Dsun.java.command options are | |
2218 // omitted from jvm_args string as each have their own PerfData | |
2219 // string constant object. | |
2220 build_jvm_args(option->optionString); | |
2221 } | |
2222 | |
2223 // -verbose:[class/gc/jni] | |
2224 if (match_option(option, "-verbose", &tail)) { | |
2225 if (!strcmp(tail, ":class") || !strcmp(tail, "")) { | |
2226 FLAG_SET_CMDLINE(bool, TraceClassLoading, true); | |
2227 FLAG_SET_CMDLINE(bool, TraceClassUnloading, true); | |
2228 } else if (!strcmp(tail, ":gc")) { | |
2229 FLAG_SET_CMDLINE(bool, PrintGC, true); | |
2230 } else if (!strcmp(tail, ":jni")) { | |
2231 FLAG_SET_CMDLINE(bool, PrintJNIResolving, true); | |
2232 } | |
2233 // -da / -ea / -disableassertions / -enableassertions | |
2234 // These accept an optional class/package name separated by a colon, e.g., | |
2235 // -da:java.lang.Thread. | |
2236 } else if (match_option(option, user_assertion_options, &tail, true)) { | |
2237 bool enable = option->optionString[1] == 'e'; // char after '-' is 'e' | |
2238 if (*tail == '\0') { | |
2239 JavaAssertions::setUserClassDefault(enable); | |
2240 } else { | |
2241 assert(*tail == ':', "bogus match by match_option()"); | |
2242 JavaAssertions::addOption(tail + 1, enable); | |
2243 } | |
2244 // -dsa / -esa / -disablesystemassertions / -enablesystemassertions | |
2245 } else if (match_option(option, system_assertion_options, &tail, false)) { | |
2246 bool enable = option->optionString[1] == 'e'; // char after '-' is 'e' | |
2247 JavaAssertions::setSystemClassDefault(enable); | |
2248 // -bootclasspath: | |
2249 } else if (match_option(option, "-Xbootclasspath:", &tail)) { | |
2250 scp_p->reset_path(tail); | |
2251 *scp_assembly_required_p = true; | |
2252 // -bootclasspath/a: | |
2253 } else if (match_option(option, "-Xbootclasspath/a:", &tail)) { | |
2254 scp_p->add_suffix(tail); | |
2255 *scp_assembly_required_p = true; | |
2256 // -bootclasspath/p: | |
2257 } else if (match_option(option, "-Xbootclasspath/p:", &tail)) { | |
2258 scp_p->add_prefix(tail); | |
2259 *scp_assembly_required_p = true; | |
2260 // -Xrun | |
2261 } else if (match_option(option, "-Xrun", &tail)) { | |
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2262 if (tail != NULL) { |
0 | 2263 const char* pos = strchr(tail, ':'); |
2264 size_t len = (pos == NULL) ? strlen(tail) : pos - tail; | |
6197 | 2265 char* name = (char*)memcpy(NEW_C_HEAP_ARRAY(char, len + 1, mtInternal), tail, len); |
0 | 2266 name[len] = '\0'; |
2267 | |
2268 char *options = NULL; | |
2269 if(pos != NULL) { | |
2270 size_t len2 = strlen(pos+1) + 1; // options start after ':'. Final zero must be copied. | |
6197 | 2271 options = (char*)memcpy(NEW_C_HEAP_ARRAY(char, len2, mtInternal), pos+1, len2); |
0 | 2272 } |
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2273 #if !INCLUDE_JVMTI |
0 | 2274 if ((strcmp(name, "hprof") == 0) || (strcmp(name, "jdwp") == 0)) { |
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2275 warning("profiling and debugging agents are not supported in this VM"); |
0 | 2276 } else |
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2277 #endif // !INCLUDE_JVMTI |
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|
2278 add_init_library(name, options); |
0 | 2279 } |
2280 // -agentlib and -agentpath | |
2281 } else if (match_option(option, "-agentlib:", &tail) || | |
2282 (is_absolute_path = match_option(option, "-agentpath:", &tail))) { | |
2283 if(tail != NULL) { | |
2284 const char* pos = strchr(tail, '='); | |
2285 size_t len = (pos == NULL) ? strlen(tail) : pos - tail; | |
6197 | 2286 char* name = strncpy(NEW_C_HEAP_ARRAY(char, len + 1, mtInternal), tail, len); |
0 | 2287 name[len] = '\0'; |
2288 | |
2289 char *options = NULL; | |
2290 if(pos != NULL) { | |
6197 | 2291 options = strcpy(NEW_C_HEAP_ARRAY(char, strlen(pos + 1) + 1, mtInternal), pos + 1); |
0 | 2292 } |
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2293 #if !INCLUDE_JVMTI |
0 | 2294 if ((strcmp(name, "hprof") == 0) || (strcmp(name, "jdwp") == 0)) { |
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2295 warning("profiling and debugging agents are not supported in this VM"); |
0 | 2296 } else |
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2297 #endif // !INCLUDE_JVMTI |
0 | 2298 add_init_agent(name, options, is_absolute_path); |
2299 | |
2300 } | |
2301 // -javaagent | |
2302 } else if (match_option(option, "-javaagent:", &tail)) { | |
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2303 #if !INCLUDE_JVMTI |
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|
2304 warning("Instrumentation agents are not supported in this VM"); |
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|
2305 #else |
0 | 2306 if(tail != NULL) { |
6197 | 2307 char *options = strcpy(NEW_C_HEAP_ARRAY(char, strlen(tail) + 1, mtInternal), tail); |
0 | 2308 add_init_agent("instrument", options, false); |
2309 } | |
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2310 #endif // !INCLUDE_JVMTI |
0 | 2311 // -Xnoclassgc |
2312 } else if (match_option(option, "-Xnoclassgc", &tail)) { | |
2313 FLAG_SET_CMDLINE(bool, ClassUnloading, false); | |
2314 // -Xincgc: i-CMS | |
2315 } else if (match_option(option, "-Xincgc", &tail)) { | |
2316 FLAG_SET_CMDLINE(bool, UseConcMarkSweepGC, true); | |
2317 FLAG_SET_CMDLINE(bool, CMSIncrementalMode, true); | |
2318 // -Xnoincgc: no i-CMS | |
2319 } else if (match_option(option, "-Xnoincgc", &tail)) { | |
2320 FLAG_SET_CMDLINE(bool, UseConcMarkSweepGC, false); | |
2321 FLAG_SET_CMDLINE(bool, CMSIncrementalMode, false); | |
2322 // -Xconcgc | |
2323 } else if (match_option(option, "-Xconcgc", &tail)) { | |
2324 FLAG_SET_CMDLINE(bool, UseConcMarkSweepGC, true); | |
2325 // -Xnoconcgc | |
2326 } else if (match_option(option, "-Xnoconcgc", &tail)) { | |
2327 FLAG_SET_CMDLINE(bool, UseConcMarkSweepGC, false); | |
2328 // -Xbatch | |
2329 } else if (match_option(option, "-Xbatch", &tail)) { | |
2330 FLAG_SET_CMDLINE(bool, BackgroundCompilation, false); | |
2331 // -Xmn for compatibility with other JVM vendors | |
2332 } else if (match_option(option, "-Xmn", &tail)) { | |
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2333 julong long_initial_eden_size = 0; |
0 | 2334 ArgsRange errcode = parse_memory_size(tail, &long_initial_eden_size, 1); |
2335 if (errcode != arg_in_range) { | |
2336 jio_fprintf(defaultStream::error_stream(), | |
2337 "Invalid initial eden size: %s\n", option->optionString); | |
2338 describe_range_error(errcode); | |
2339 return JNI_EINVAL; | |
2340 } | |
1064 | 2341 FLAG_SET_CMDLINE(uintx, MaxNewSize, (uintx)long_initial_eden_size); |
2342 FLAG_SET_CMDLINE(uintx, NewSize, (uintx)long_initial_eden_size); | |
0 | 2343 // -Xms |
2344 } else if (match_option(option, "-Xms", &tail)) { | |
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2345 julong long_initial_heap_size = 0; |
0 | 2346 ArgsRange errcode = parse_memory_size(tail, &long_initial_heap_size, 1); |
2347 if (errcode != arg_in_range) { | |
2348 jio_fprintf(defaultStream::error_stream(), | |
2349 "Invalid initial heap size: %s\n", option->optionString); | |
2350 describe_range_error(errcode); | |
2351 return JNI_EINVAL; | |
2352 } | |
1064 | 2353 FLAG_SET_CMDLINE(uintx, InitialHeapSize, (uintx)long_initial_heap_size); |
0 | 2354 // Currently the minimum size and the initial heap sizes are the same. |
1064 | 2355 set_min_heap_size(InitialHeapSize); |
0 | 2356 // -Xmx |
2357 } else if (match_option(option, "-Xmx", &tail)) { | |
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2358 julong long_max_heap_size = 0; |
0 | 2359 ArgsRange errcode = parse_memory_size(tail, &long_max_heap_size, 1); |
2360 if (errcode != arg_in_range) { | |
2361 jio_fprintf(defaultStream::error_stream(), | |
2362 "Invalid maximum heap size: %s\n", option->optionString); | |
2363 describe_range_error(errcode); | |
2364 return JNI_EINVAL; | |
2365 } | |
1064 | 2366 FLAG_SET_CMDLINE(uintx, MaxHeapSize, (uintx)long_max_heap_size); |
0 | 2367 // Xmaxf |
2368 } else if (match_option(option, "-Xmaxf", &tail)) { | |
2369 int maxf = (int)(atof(tail) * 100); | |
2370 if (maxf < 0 || maxf > 100) { | |
2371 jio_fprintf(defaultStream::error_stream(), | |
2372 "Bad max heap free percentage size: %s\n", | |
2373 option->optionString); | |
2374 return JNI_EINVAL; | |
2375 } else { | |
2376 FLAG_SET_CMDLINE(uintx, MaxHeapFreeRatio, maxf); | |
2377 } | |
2378 // Xminf | |
2379 } else if (match_option(option, "-Xminf", &tail)) { | |
2380 int minf = (int)(atof(tail) * 100); | |
2381 if (minf < 0 || minf > 100) { | |
2382 jio_fprintf(defaultStream::error_stream(), | |
2383 "Bad min heap free percentage size: %s\n", | |
2384 option->optionString); | |
2385 return JNI_EINVAL; | |
2386 } else { | |
2387 FLAG_SET_CMDLINE(uintx, MinHeapFreeRatio, minf); | |
2388 } | |
2389 // -Xss | |
2390 } else if (match_option(option, "-Xss", &tail)) { | |
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2391 julong long_ThreadStackSize = 0; |
0 | 2392 ArgsRange errcode = parse_memory_size(tail, &long_ThreadStackSize, 1000); |
2393 if (errcode != arg_in_range) { | |
2394 jio_fprintf(defaultStream::error_stream(), | |
2395 "Invalid thread stack size: %s\n", option->optionString); | |
2396 describe_range_error(errcode); | |
2397 return JNI_EINVAL; | |
2398 } | |
2399 // Internally track ThreadStackSize in units of 1024 bytes. | |
2400 FLAG_SET_CMDLINE(intx, ThreadStackSize, | |
2401 round_to((int)long_ThreadStackSize, K) / K); | |
2402 // -Xoss | |
2403 } else if (match_option(option, "-Xoss", &tail)) { | |
2404 // HotSpot does not have separate native and Java stacks, ignore silently for compatibility | |
2405 // -Xmaxjitcodesize | |
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2406 } else if (match_option(option, "-Xmaxjitcodesize", &tail) || |
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2407 match_option(option, "-XX:ReservedCodeCacheSize=", &tail)) { |
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2408 julong long_ReservedCodeCacheSize = 0; |
0 | 2409 ArgsRange errcode = parse_memory_size(tail, &long_ReservedCodeCacheSize, |
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2410 (size_t)InitialCodeCacheSize); |
0 | 2411 if (errcode != arg_in_range) { |
2412 jio_fprintf(defaultStream::error_stream(), | |
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2413 "Invalid maximum code cache size: %s. Should be greater than InitialCodeCacheSize=%dK\n", |
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2414 option->optionString, InitialCodeCacheSize/K); |
0 | 2415 describe_range_error(errcode); |
2416 return JNI_EINVAL; | |
2417 } | |
2418 FLAG_SET_CMDLINE(uintx, ReservedCodeCacheSize, (uintx)long_ReservedCodeCacheSize); | |
2419 // -green | |
2420 } else if (match_option(option, "-green", &tail)) { | |
2421 jio_fprintf(defaultStream::error_stream(), | |
2422 "Green threads support not available\n"); | |
2423 return JNI_EINVAL; | |
2424 // -native | |
2425 } else if (match_option(option, "-native", &tail)) { | |
2426 // HotSpot always uses native threads, ignore silently for compatibility | |
2427 // -Xsqnopause | |
2428 } else if (match_option(option, "-Xsqnopause", &tail)) { | |
2429 // EVM option, ignore silently for compatibility | |
2430 // -Xrs | |
2431 } else if (match_option(option, "-Xrs", &tail)) { | |
2432 // Classic/EVM option, new functionality | |
2433 FLAG_SET_CMDLINE(bool, ReduceSignalUsage, true); | |
2434 } else if (match_option(option, "-Xusealtsigs", &tail)) { | |
2435 // change default internal VM signals used - lower case for back compat | |
2436 FLAG_SET_CMDLINE(bool, UseAltSigs, true); | |
2437 // -Xoptimize | |
2438 } else if (match_option(option, "-Xoptimize", &tail)) { | |
2439 // EVM option, ignore silently for compatibility | |
2440 // -Xprof | |
2441 } else if (match_option(option, "-Xprof", &tail)) { | |
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2442 #if INCLUDE_FPROF |
0 | 2443 _has_profile = true; |
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2444 #else // INCLUDE_FPROF |
0 | 2445 // do we have to exit? |
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2446 warning("Flat profiling is not supported in this VM."); |
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2447 #endif // INCLUDE_FPROF |
0 | 2448 // -Xaprof |
2449 } else if (match_option(option, "-Xaprof", &tail)) { | |
2450 _has_alloc_profile = true; | |
2451 // -Xconcurrentio | |
2452 } else if (match_option(option, "-Xconcurrentio", &tail)) { | |
2453 FLAG_SET_CMDLINE(bool, UseLWPSynchronization, true); | |
2454 FLAG_SET_CMDLINE(bool, BackgroundCompilation, false); | |
2455 FLAG_SET_CMDLINE(intx, DeferThrSuspendLoopCount, 1); | |
2456 FLAG_SET_CMDLINE(bool, UseTLAB, false); | |
2457 FLAG_SET_CMDLINE(uintx, NewSizeThreadIncrease, 16 * K); // 20Kb per thread added to new generation | |
2458 | |
2459 // -Xinternalversion | |
2460 } else if (match_option(option, "-Xinternalversion", &tail)) { | |
2461 jio_fprintf(defaultStream::output_stream(), "%s\n", | |
2462 VM_Version::internal_vm_info_string()); | |
2463 vm_exit(0); | |
2464 #ifndef PRODUCT | |
2465 // -Xprintflags | |
2466 } else if (match_option(option, "-Xprintflags", &tail)) { | |
4773 | 2467 CommandLineFlags::printFlags(tty, false); |
0 | 2468 vm_exit(0); |
2469 #endif | |
2470 // -D | |
2471 } else if (match_option(option, "-D", &tail)) { | |
2472 if (!add_property(tail)) { | |
2473 return JNI_ENOMEM; | |
2474 } | |
2475 // Out of the box management support | |
2476 if (match_option(option, "-Dcom.sun.management", &tail)) { | |
2477 FLAG_SET_CMDLINE(bool, ManagementServer, true); | |
2478 } | |
2479 // -Xint | |
2480 } else if (match_option(option, "-Xint", &tail)) { | |
2481 set_mode_flags(_int); | |
2482 // -Xmixed | |
2483 } else if (match_option(option, "-Xmixed", &tail)) { | |
2484 set_mode_flags(_mixed); | |
2485 // -Xcomp | |
2486 } else if (match_option(option, "-Xcomp", &tail)) { | |
2487 // for testing the compiler; turn off all flags that inhibit compilation | |
2488 set_mode_flags(_comp); | |
2489 | |
2490 // -Xshare:dump | |
2491 } else if (match_option(option, "-Xshare:dump", &tail)) { | |
7951 | 2492 #if !INCLUDE_CDS |
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2493 vm_exit_during_initialization( |
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2494 "Dumping a shared archive is not supported in this VM.", NULL); |
0 | 2495 #else |
2496 FLAG_SET_CMDLINE(bool, DumpSharedSpaces, true); | |
2497 set_mode_flags(_int); // Prevent compilation, which creates objects | |
2498 #endif | |
2499 // -Xshare:on | |
2500 } else if (match_option(option, "-Xshare:on", &tail)) { | |
2501 FLAG_SET_CMDLINE(bool, UseSharedSpaces, true); | |
2502 FLAG_SET_CMDLINE(bool, RequireSharedSpaces, true); | |
2503 // -Xshare:auto | |
2504 } else if (match_option(option, "-Xshare:auto", &tail)) { | |
2505 FLAG_SET_CMDLINE(bool, UseSharedSpaces, true); | |
2506 FLAG_SET_CMDLINE(bool, RequireSharedSpaces, false); | |
2507 // -Xshare:off | |
2508 } else if (match_option(option, "-Xshare:off", &tail)) { | |
2509 FLAG_SET_CMDLINE(bool, UseSharedSpaces, false); | |
2510 FLAG_SET_CMDLINE(bool, RequireSharedSpaces, false); | |
2511 | |
2512 // -Xverify | |
2513 } else if (match_option(option, "-Xverify", &tail)) { | |
2514 if (strcmp(tail, ":all") == 0 || strcmp(tail, "") == 0) { | |
2515 FLAG_SET_CMDLINE(bool, BytecodeVerificationLocal, true); | |
2516 FLAG_SET_CMDLINE(bool, BytecodeVerificationRemote, true); | |
2517 } else if (strcmp(tail, ":remote") == 0) { | |
2518 FLAG_SET_CMDLINE(bool, BytecodeVerificationLocal, false); | |
2519 FLAG_SET_CMDLINE(bool, BytecodeVerificationRemote, true); | |
2520 } else if (strcmp(tail, ":none") == 0) { | |
2521 FLAG_SET_CMDLINE(bool, BytecodeVerificationLocal, false); | |
2522 FLAG_SET_CMDLINE(bool, BytecodeVerificationRemote, false); | |
2523 } else if (is_bad_option(option, args->ignoreUnrecognized, "verification")) { | |
2524 return JNI_EINVAL; | |
2525 } | |
2526 // -Xdebug | |
2527 } else if (match_option(option, "-Xdebug", &tail)) { | |
2528 // note this flag has been used, then ignore | |
2529 set_xdebug_mode(true); | |
2530 // -Xnoagent | |
2531 } else if (match_option(option, "-Xnoagent", &tail)) { | |
2532 // For compatibility with classic. HotSpot refuses to load the old style agent.dll. | |
2533 } else if (match_option(option, "-Xboundthreads", &tail)) { | |
2534 // Bind user level threads to kernel threads (Solaris only) | |
2535 FLAG_SET_CMDLINE(bool, UseBoundThreads, true); | |
2536 } else if (match_option(option, "-Xloggc:", &tail)) { | |
2537 // Redirect GC output to the file. -Xloggc:<filename> | |
2538 // ostream_init_log(), when called will use this filename | |
2539 // to initialize a fileStream. | |
2540 _gc_log_filename = strdup(tail); | |
2541 FLAG_SET_CMDLINE(bool, PrintGC, true); | |
2542 FLAG_SET_CMDLINE(bool, PrintGCTimeStamps, true); | |
2543 | |
2544 // JNI hooks | |
2545 } else if (match_option(option, "-Xcheck", &tail)) { | |
2546 if (!strcmp(tail, ":jni")) { | |
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2547 #if !INCLUDE_JNI_CHECK |
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2548 warning("JNI CHECKING is not supported in this VM"); |
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2549 #else |
0 | 2550 CheckJNICalls = true; |
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2551 #endif // INCLUDE_JNI_CHECK |
0 | 2552 } else if (is_bad_option(option, args->ignoreUnrecognized, |
2553 "check")) { | |
2554 return JNI_EINVAL; | |
2555 } | |
2556 } else if (match_option(option, "vfprintf", &tail)) { | |
2557 _vfprintf_hook = CAST_TO_FN_PTR(vfprintf_hook_t, option->extraInfo); | |
2558 } else if (match_option(option, "exit", &tail)) { | |
2559 _exit_hook = CAST_TO_FN_PTR(exit_hook_t, option->extraInfo); | |
2560 } else if (match_option(option, "abort", &tail)) { | |
2561 _abort_hook = CAST_TO_FN_PTR(abort_hook_t, option->extraInfo); | |
2562 // -XX:+AggressiveHeap | |
2563 } else if (match_option(option, "-XX:+AggressiveHeap", &tail)) { | |
2564 | |
2565 // This option inspects the machine and attempts to set various | |
2566 // parameters to be optimal for long-running, memory allocation | |
2567 // intensive jobs. It is intended for machines with large | |
2568 // amounts of cpu and memory. | |
2569 | |
2570 // initHeapSize is needed since _initial_heap_size is 4 bytes on a 32 bit | |
2571 // VM, but we may not be able to represent the total physical memory | |
2572 // available (like having 8gb of memory on a box but using a 32bit VM). | |
2573 // Thus, we need to make sure we're using a julong for intermediate | |
2574 // calculations. | |
2575 julong initHeapSize; | |
2576 julong total_memory = os::physical_memory(); | |
2577 | |
2578 if (total_memory < (julong)256*M) { | |
2579 jio_fprintf(defaultStream::error_stream(), | |
2580 "You need at least 256mb of memory to use -XX:+AggressiveHeap\n"); | |
2581 vm_exit(1); | |
2582 } | |
2583 | |
2584 // The heap size is half of available memory, or (at most) | |
2585 // all of possible memory less 160mb (leaving room for the OS | |
2586 // when using ISM). This is the maximum; because adaptive sizing | |
2587 // is turned on below, the actual space used may be smaller. | |
2588 | |
2589 initHeapSize = MIN2(total_memory / (julong)2, | |
2590 total_memory - (julong)160*M); | |
2591 | |
2592 // Make sure that if we have a lot of memory we cap the 32 bit | |
2593 // process space. The 64bit VM version of this function is a nop. | |
2594 initHeapSize = os::allocatable_physical_memory(initHeapSize); | |
2595 | |
2596 if (FLAG_IS_DEFAULT(MaxHeapSize)) { | |
2597 FLAG_SET_CMDLINE(uintx, MaxHeapSize, initHeapSize); | |
1064 | 2598 FLAG_SET_CMDLINE(uintx, InitialHeapSize, initHeapSize); |
0 | 2599 // Currently the minimum size and the initial heap sizes are the same. |
1064 | 2600 set_min_heap_size(initHeapSize); |
0 | 2601 } |
2602 if (FLAG_IS_DEFAULT(NewSize)) { | |
2603 // Make the young generation 3/8ths of the total heap. | |
2604 FLAG_SET_CMDLINE(uintx, NewSize, | |
2605 ((julong)MaxHeapSize / (julong)8) * (julong)3); | |
2606 FLAG_SET_CMDLINE(uintx, MaxNewSize, NewSize); | |
2607 } | |
2608 | |
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2609 #ifndef _ALLBSD_SOURCE // UseLargePages is not yet supported on BSD. |
0 | 2610 FLAG_SET_DEFAULT(UseLargePages, true); |
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2611 #endif |
0 | 2612 |
2613 // Increase some data structure sizes for efficiency | |
2614 FLAG_SET_CMDLINE(uintx, BaseFootPrintEstimate, MaxHeapSize); | |
2615 FLAG_SET_CMDLINE(bool, ResizeTLAB, false); | |
2616 FLAG_SET_CMDLINE(uintx, TLABSize, 256*K); | |
2617 | |
2618 // See the OldPLABSize comment below, but replace 'after promotion' | |
2619 // with 'after copying'. YoungPLABSize is the size of the survivor | |
2620 // space per-gc-thread buffers. The default is 4kw. | |
2621 FLAG_SET_CMDLINE(uintx, YoungPLABSize, 256*K); // Note: this is in words | |
2622 | |
2623 // OldPLABSize is the size of the buffers in the old gen that | |
2624 // UseParallelGC uses to promote live data that doesn't fit in the | |
2625 // survivor spaces. At any given time, there's one for each gc thread. | |
2626 // The default size is 1kw. These buffers are rarely used, since the | |
2627 // survivor spaces are usually big enough. For specjbb, however, there | |
2628 // are occasions when there's lots of live data in the young gen | |
2629 // and we end up promoting some of it. We don't have a definite | |
2630 // explanation for why bumping OldPLABSize helps, but the theory | |
2631 // is that a bigger PLAB results in retaining something like the | |
2632 // original allocation order after promotion, which improves mutator | |
2633 // locality. A minor effect may be that larger PLABs reduce the | |
2634 // number of PLAB allocation events during gc. The value of 8kw | |
2635 // was arrived at by experimenting with specjbb. | |
2636 FLAG_SET_CMDLINE(uintx, OldPLABSize, 8*K); // Note: this is in words | |
2637 | |
2638 // Enable parallel GC and adaptive generation sizing | |
2639 FLAG_SET_CMDLINE(bool, UseParallelGC, true); | |
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2640 FLAG_SET_DEFAULT(ParallelGCThreads, |
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2641 Abstract_VM_Version::parallel_worker_threads()); |
0 | 2642 |
2643 // Encourage steady state memory management | |
2644 FLAG_SET_CMDLINE(uintx, ThresholdTolerance, 100); | |
2645 | |
2646 // This appears to improve mutator locality | |
2647 FLAG_SET_CMDLINE(bool, ScavengeBeforeFullGC, false); | |
2648 | |
2649 // Get around early Solaris scheduling bug | |
2650 // (affinity vs other jobs on system) | |
2651 // but disallow DR and offlining (5008695). | |
2652 FLAG_SET_CMDLINE(bool, BindGCTaskThreadsToCPUs, true); | |
2653 | |
2654 } else if (match_option(option, "-XX:+NeverTenure", &tail)) { | |
2655 // The last option must always win. | |
2656 FLAG_SET_CMDLINE(bool, AlwaysTenure, false); | |
2657 FLAG_SET_CMDLINE(bool, NeverTenure, true); | |
2658 } else if (match_option(option, "-XX:+AlwaysTenure", &tail)) { | |
2659 // The last option must always win. | |
2660 FLAG_SET_CMDLINE(bool, NeverTenure, false); | |
2661 FLAG_SET_CMDLINE(bool, AlwaysTenure, true); | |
2662 } else if (match_option(option, "-XX:+CMSPermGenSweepingEnabled", &tail) || | |
2663 match_option(option, "-XX:-CMSPermGenSweepingEnabled", &tail)) { | |
2664 jio_fprintf(defaultStream::error_stream(), | |
2665 "Please use CMSClassUnloadingEnabled in place of " | |
2666 "CMSPermGenSweepingEnabled in the future\n"); | |
2667 } else if (match_option(option, "-XX:+UseGCTimeLimit", &tail)) { | |
2668 FLAG_SET_CMDLINE(bool, UseGCOverheadLimit, true); | |
2669 jio_fprintf(defaultStream::error_stream(), | |
2670 "Please use -XX:+UseGCOverheadLimit in place of " | |
2671 "-XX:+UseGCTimeLimit in the future\n"); | |
2672 } else if (match_option(option, "-XX:-UseGCTimeLimit", &tail)) { | |
2673 FLAG_SET_CMDLINE(bool, UseGCOverheadLimit, false); | |
2674 jio_fprintf(defaultStream::error_stream(), | |
2675 "Please use -XX:-UseGCOverheadLimit in place of " | |
2676 "-XX:-UseGCTimeLimit in the future\n"); | |
2677 // The TLE options are for compatibility with 1.3 and will be | |
2678 // removed without notice in a future release. These options | |
2679 // are not to be documented. | |
2680 } else if (match_option(option, "-XX:MaxTLERatio=", &tail)) { | |
2681 // No longer used. | |
2682 } else if (match_option(option, "-XX:+ResizeTLE", &tail)) { | |
2683 FLAG_SET_CMDLINE(bool, ResizeTLAB, true); | |
2684 } else if (match_option(option, "-XX:-ResizeTLE", &tail)) { | |
2685 FLAG_SET_CMDLINE(bool, ResizeTLAB, false); | |
2686 } else if (match_option(option, "-XX:+PrintTLE", &tail)) { | |
2687 FLAG_SET_CMDLINE(bool, PrintTLAB, true); | |
2688 } else if (match_option(option, "-XX:-PrintTLE", &tail)) { | |
2689 FLAG_SET_CMDLINE(bool, PrintTLAB, false); | |
2690 } else if (match_option(option, "-XX:TLEFragmentationRatio=", &tail)) { | |
2691 // No longer used. | |
2692 } else if (match_option(option, "-XX:TLESize=", &tail)) { | |
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diff
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|
2693 julong long_tlab_size = 0; |
0 | 2694 ArgsRange errcode = parse_memory_size(tail, &long_tlab_size, 1); |
2695 if (errcode != arg_in_range) { | |
2696 jio_fprintf(defaultStream::error_stream(), | |
2697 "Invalid TLAB size: %s\n", option->optionString); | |
2698 describe_range_error(errcode); | |
2699 return JNI_EINVAL; | |
2700 } | |
2701 FLAG_SET_CMDLINE(uintx, TLABSize, long_tlab_size); | |
2702 } else if (match_option(option, "-XX:TLEThreadRatio=", &tail)) { | |
2703 // No longer used. | |
2704 } else if (match_option(option, "-XX:+UseTLE", &tail)) { | |
2705 FLAG_SET_CMDLINE(bool, UseTLAB, true); | |
2706 } else if (match_option(option, "-XX:-UseTLE", &tail)) { | |
2707 FLAG_SET_CMDLINE(bool, UseTLAB, false); | |
2708 SOLARIS_ONLY( | |
2709 } else if (match_option(option, "-XX:+UsePermISM", &tail)) { | |
2710 warning("-XX:+UsePermISM is obsolete."); | |
2711 FLAG_SET_CMDLINE(bool, UseISM, true); | |
2712 } else if (match_option(option, "-XX:-UsePermISM", &tail)) { | |
2713 FLAG_SET_CMDLINE(bool, UseISM, false); | |
2714 ) | |
2715 } else if (match_option(option, "-XX:+DisplayVMOutputToStderr", &tail)) { | |
2716 FLAG_SET_CMDLINE(bool, DisplayVMOutputToStdout, false); | |
2717 FLAG_SET_CMDLINE(bool, DisplayVMOutputToStderr, true); | |
2718 } else if (match_option(option, "-XX:+DisplayVMOutputToStdout", &tail)) { | |
2719 FLAG_SET_CMDLINE(bool, DisplayVMOutputToStderr, false); | |
2720 FLAG_SET_CMDLINE(bool, DisplayVMOutputToStdout, true); | |
2721 } else if (match_option(option, "-XX:+ExtendedDTraceProbes", &tail)) { | |
4006 | 2722 #if defined(DTRACE_ENABLED) |
0 | 2723 FLAG_SET_CMDLINE(bool, ExtendedDTraceProbes, true); |
2724 FLAG_SET_CMDLINE(bool, DTraceMethodProbes, true); | |
2725 FLAG_SET_CMDLINE(bool, DTraceAllocProbes, true); | |
2726 FLAG_SET_CMDLINE(bool, DTraceMonitorProbes, true); | |
4006 | 2727 #else // defined(DTRACE_ENABLED) |
0 | 2728 jio_fprintf(defaultStream::error_stream(), |
4006 | 2729 "ExtendedDTraceProbes flag is not applicable for this configuration\n"); |
0 | 2730 return JNI_EINVAL; |
4006 | 2731 #endif // defined(DTRACE_ENABLED) |
0 | 2732 #ifdef ASSERT |
1145
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6631166: CMS: better heuristics when combatting fragmentation
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1074
diff
changeset
|
2733 } else if (match_option(option, "-XX:+FullGCALot", &tail)) { |
0 | 2734 FLAG_SET_CMDLINE(bool, FullGCALot, true); |
2735 // disable scavenge before parallel mark-compact | |
2736 FLAG_SET_CMDLINE(bool, ScavengeBeforeFullGC, false); | |
2737 #endif | |
1145
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
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1074
diff
changeset
|
2738 } else if (match_option(option, "-XX:CMSParPromoteBlocksToClaim=", &tail)) { |
0 | 2739 julong cms_blocks_to_claim = (julong)atol(tail); |
2740 FLAG_SET_CMDLINE(uintx, CMSParPromoteBlocksToClaim, cms_blocks_to_claim); | |
2741 jio_fprintf(defaultStream::error_stream(), | |
1145
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1074
diff
changeset
|
2742 "Please use -XX:OldPLABSize in place of " |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1074
diff
changeset
|
2743 "-XX:CMSParPromoteBlocksToClaim in the future\n"); |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1074
diff
changeset
|
2744 } else if (match_option(option, "-XX:ParCMSPromoteBlocksToClaim=", &tail)) { |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1074
diff
changeset
|
2745 julong cms_blocks_to_claim = (julong)atol(tail); |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1074
diff
changeset
|
2746 FLAG_SET_CMDLINE(uintx, CMSParPromoteBlocksToClaim, cms_blocks_to_claim); |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1074
diff
changeset
|
2747 jio_fprintf(defaultStream::error_stream(), |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1074
diff
changeset
|
2748 "Please use -XX:OldPLABSize in place of " |
0 | 2749 "-XX:ParCMSPromoteBlocksToClaim in the future\n"); |
1145
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
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parents:
1074
diff
changeset
|
2750 } else if (match_option(option, "-XX:ParallelGCOldGenAllocBufferSize=", &tail)) { |
489
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6653214: MemoryPoolMXBean.setUsageThreshold() does not support large heap sizes.
swamyv
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483
diff
changeset
|
2751 julong old_plab_size = 0; |
0 | 2752 ArgsRange errcode = parse_memory_size(tail, &old_plab_size, 1); |
2753 if (errcode != arg_in_range) { | |
2754 jio_fprintf(defaultStream::error_stream(), | |
2755 "Invalid old PLAB size: %s\n", option->optionString); | |
2756 describe_range_error(errcode); | |
2757 return JNI_EINVAL; | |
2758 } | |
489
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6653214: MemoryPoolMXBean.setUsageThreshold() does not support large heap sizes.
swamyv
parents:
483
diff
changeset
|
2759 FLAG_SET_CMDLINE(uintx, OldPLABSize, old_plab_size); |
0 | 2760 jio_fprintf(defaultStream::error_stream(), |
2761 "Please use -XX:OldPLABSize in place of " | |
2762 "-XX:ParallelGCOldGenAllocBufferSize in the future\n"); | |
1145
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1074
diff
changeset
|
2763 } else if (match_option(option, "-XX:ParallelGCToSpaceAllocBufferSize=", &tail)) { |
489
2494ab195856
6653214: MemoryPoolMXBean.setUsageThreshold() does not support large heap sizes.
swamyv
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diff
changeset
|
2764 julong young_plab_size = 0; |
0 | 2765 ArgsRange errcode = parse_memory_size(tail, &young_plab_size, 1); |
2766 if (errcode != arg_in_range) { | |
2767 jio_fprintf(defaultStream::error_stream(), | |
2768 "Invalid young PLAB size: %s\n", option->optionString); | |
2769 describe_range_error(errcode); | |
2770 return JNI_EINVAL; | |
2771 } | |
489
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6653214: MemoryPoolMXBean.setUsageThreshold() does not support large heap sizes.
swamyv
parents:
483
diff
changeset
|
2772 FLAG_SET_CMDLINE(uintx, YoungPLABSize, young_plab_size); |
0 | 2773 jio_fprintf(defaultStream::error_stream(), |
2774 "Please use -XX:YoungPLABSize in place of " | |
2775 "-XX:ParallelGCToSpaceAllocBufferSize in the future\n"); | |
1284 | 2776 } else if (match_option(option, "-XX:CMSMarkStackSize=", &tail) || |
2777 match_option(option, "-XX:G1MarkStackSize=", &tail)) { | |
2778 julong stack_size = 0; | |
2779 ArgsRange errcode = parse_memory_size(tail, &stack_size, 1); | |
2780 if (errcode != arg_in_range) { | |
2781 jio_fprintf(defaultStream::error_stream(), | |
2782 "Invalid mark stack size: %s\n", option->optionString); | |
2783 describe_range_error(errcode); | |
2784 return JNI_EINVAL; | |
2785 } | |
2786 FLAG_SET_CMDLINE(uintx, MarkStackSize, stack_size); | |
2787 } else if (match_option(option, "-XX:CMSMarkStackSizeMax=", &tail)) { | |
2788 julong max_stack_size = 0; | |
2789 ArgsRange errcode = parse_memory_size(tail, &max_stack_size, 1); | |
2790 if (errcode != arg_in_range) { | |
2791 jio_fprintf(defaultStream::error_stream(), | |
2792 "Invalid maximum mark stack size: %s\n", | |
2793 option->optionString); | |
2794 describe_range_error(errcode); | |
2795 return JNI_EINVAL; | |
2796 } | |
2797 FLAG_SET_CMDLINE(uintx, MarkStackSizeMax, max_stack_size); | |
2798 } else if (match_option(option, "-XX:ParallelMarkingThreads=", &tail) || | |
2799 match_option(option, "-XX:ParallelCMSThreads=", &tail)) { | |
2800 uintx conc_threads = 0; | |
2801 if (!parse_uintx(tail, &conc_threads, 1)) { | |
2802 jio_fprintf(defaultStream::error_stream(), | |
2803 "Invalid concurrent threads: %s\n", option->optionString); | |
2804 return JNI_EINVAL; | |
2805 } | |
2806 FLAG_SET_CMDLINE(uintx, ConcGCThreads, conc_threads); | |
6199
3f1ab0c19c30
7179383: MaxDirectMemorySize argument parsing is broken for values >2G
dholmes
parents:
6198
diff
changeset
|
2807 } else if (match_option(option, "-XX:MaxDirectMemorySize=", &tail)) { |
3f1ab0c19c30
7179383: MaxDirectMemorySize argument parsing is broken for values >2G
dholmes
parents:
6198
diff
changeset
|
2808 julong max_direct_memory_size = 0; |
3f1ab0c19c30
7179383: MaxDirectMemorySize argument parsing is broken for values >2G
dholmes
parents:
6198
diff
changeset
|
2809 ArgsRange errcode = parse_memory_size(tail, &max_direct_memory_size, 0); |
3f1ab0c19c30
7179383: MaxDirectMemorySize argument parsing is broken for values >2G
dholmes
parents:
6198
diff
changeset
|
2810 if (errcode != arg_in_range) { |
3f1ab0c19c30
7179383: MaxDirectMemorySize argument parsing is broken for values >2G
dholmes
parents:
6198
diff
changeset
|
2811 jio_fprintf(defaultStream::error_stream(), |
3f1ab0c19c30
7179383: MaxDirectMemorySize argument parsing is broken for values >2G
dholmes
parents:
6198
diff
changeset
|
2812 "Invalid maximum direct memory size: %s\n", |
3f1ab0c19c30
7179383: MaxDirectMemorySize argument parsing is broken for values >2G
dholmes
parents:
6198
diff
changeset
|
2813 option->optionString); |
3f1ab0c19c30
7179383: MaxDirectMemorySize argument parsing is broken for values >2G
dholmes
parents:
6198
diff
changeset
|
2814 describe_range_error(errcode); |
3f1ab0c19c30
7179383: MaxDirectMemorySize argument parsing is broken for values >2G
dholmes
parents:
6198
diff
changeset
|
2815 return JNI_EINVAL; |
3f1ab0c19c30
7179383: MaxDirectMemorySize argument parsing is broken for values >2G
dholmes
parents:
6198
diff
changeset
|
2816 } |
3f1ab0c19c30
7179383: MaxDirectMemorySize argument parsing is broken for values >2G
dholmes
parents:
6198
diff
changeset
|
2817 FLAG_SET_CMDLINE(uintx, MaxDirectMemorySize, max_direct_memory_size); |
6878
85916677fc22
7188233: UseVMInterruptibleIO flag deprecate for JDK8
coleenp
parents:
6857
diff
changeset
|
2818 } else if (match_option(option, "-XX:+UseVMInterruptibleIO", &tail)) { |
85916677fc22
7188233: UseVMInterruptibleIO flag deprecate for JDK8
coleenp
parents:
6857
diff
changeset
|
2819 // NOTE! In JDK 9, the UseVMInterruptibleIO flag will completely go |
85916677fc22
7188233: UseVMInterruptibleIO flag deprecate for JDK8
coleenp
parents:
6857
diff
changeset
|
2820 // away and will cause VM initialization failures! |
85916677fc22
7188233: UseVMInterruptibleIO flag deprecate for JDK8
coleenp
parents:
6857
diff
changeset
|
2821 warning("-XX:+UseVMInterruptibleIO is obsolete and will be removed in a future release."); |
85916677fc22
7188233: UseVMInterruptibleIO flag deprecate for JDK8
coleenp
parents:
6857
diff
changeset
|
2822 FLAG_SET_CMDLINE(bool, UseVMInterruptibleIO, true); |
1145
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6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1074
diff
changeset
|
2823 } else if (match_option(option, "-XX:", &tail)) { // -XX:xxxx |
0 | 2824 // Skip -XX:Flags= since that case has already been handled |
2825 if (strncmp(tail, "Flags=", strlen("Flags=")) != 0) { | |
2826 if (!process_argument(tail, args->ignoreUnrecognized, origin)) { | |
2827 return JNI_EINVAL; | |
2828 } | |
2829 } | |
2830 // Unknown option | |
2831 } else if (is_bad_option(option, args->ignoreUnrecognized)) { | |
2832 return JNI_ERR; | |
2833 } | |
2834 } | |
3767
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3349
diff
changeset
|
2835 |
449
171e581e8161
6554406: Change switch UseVMInterruptibleIO default to false (sol)
xlu
parents:
420
diff
changeset
|
2836 // 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
|
2837 // when working with older JDKs. |
1679
3d90023429ec
6888526: Linux getCurrentThreadCpuTime is drastically slower than Windows
aph
parents:
1628
diff
changeset
|
2838 #ifdef LINUX |
3d90023429ec
6888526: Linux getCurrentThreadCpuTime is drastically slower than Windows
aph
parents:
1628
diff
changeset
|
2839 if (JDK_Version::current().compare_major(6) <= 0 && |
3d90023429ec
6888526: Linux getCurrentThreadCpuTime is drastically slower than Windows
aph
parents:
1628
diff
changeset
|
2840 FLAG_IS_DEFAULT(UseLinuxPosixThreadCPUClocks)) { |
3d90023429ec
6888526: Linux getCurrentThreadCpuTime is drastically slower than Windows
aph
parents:
1628
diff
changeset
|
2841 FLAG_SET_DEFAULT(UseLinuxPosixThreadCPUClocks, false); |
3d90023429ec
6888526: Linux getCurrentThreadCpuTime is drastically slower than Windows
aph
parents:
1628
diff
changeset
|
2842 } |
3d90023429ec
6888526: Linux getCurrentThreadCpuTime is drastically slower than Windows
aph
parents:
1628
diff
changeset
|
2843 #endif // LINUX |
0 | 2844 return JNI_OK; |
2845 } | |
2846 | |
2847 jint Arguments::finalize_vm_init_args(SysClassPath* scp_p, bool scp_assembly_required) { | |
2848 // This must be done after all -D arguments have been processed. | |
2849 scp_p->expand_endorsed(); | |
2850 | |
2851 if (scp_assembly_required || scp_p->get_endorsed() != NULL) { | |
2852 // Assemble the bootclasspath elements into the final path. | |
2853 Arguments::set_sysclasspath(scp_p->combined_path()); | |
2854 } | |
2855 | |
2856 // This must be done after all arguments have been processed. | |
2857 // java_compiler() true means set to "NONE" or empty. | |
2858 if (java_compiler() && !xdebug_mode()) { | |
2859 // For backwards compatibility, we switch to interpreted mode if | |
2860 // -Djava.compiler="NONE" or "" is specified AND "-Xdebug" was | |
2861 // not specified. | |
2862 set_mode_flags(_int); | |
2863 } | |
2864 if (CompileThreshold == 0) { | |
2865 set_mode_flags(_int); | |
2866 } | |
2867 | |
2868 #ifndef COMPILER2 | |
2869 // Don't degrade server performance for footprint | |
2870 if (FLAG_IS_DEFAULT(UseLargePages) && | |
2871 MaxHeapSize < LargePageHeapSizeThreshold) { | |
2872 // No need for large granularity pages w/small heaps. | |
2873 // Note that large pages are enabled/disabled for both the | |
2874 // Java heap and the code cache. | |
2875 FLAG_SET_DEFAULT(UseLargePages, false); | |
2876 SOLARIS_ONLY(FLAG_SET_DEFAULT(UseMPSS, false)); | |
2877 SOLARIS_ONLY(FLAG_SET_DEFAULT(UseISM, false)); | |
2878 } | |
342
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
135
diff
changeset
|
2879 |
1251
576e77447e3c
6923002: assert(false,"this call site should not be polymorphic")
kvn
parents:
1188
diff
changeset
|
2880 // Tiered compilation is undefined with C1. |
576e77447e3c
6923002: assert(false,"this call site should not be polymorphic")
kvn
parents:
1188
diff
changeset
|
2881 TieredCompilation = false; |
0 | 2882 #else |
2883 if (!FLAG_IS_DEFAULT(OptoLoopAlignment) && FLAG_IS_DEFAULT(MaxLoopPad)) { | |
2884 FLAG_SET_DEFAULT(MaxLoopPad, OptoLoopAlignment-1); | |
2885 } | |
2886 #endif | |
2887 | |
1681
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2888 // 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
|
2889 // to be true unless the property has already been set. |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2890 // 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
|
2891 if (os::is_headless_jre()) { |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2892 const char* headless = Arguments::get_property("java.awt.headless"); |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2893 if (headless == NULL) { |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2894 char envbuffer[128]; |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2895 if (!os::getenv("JAVA_AWT_HEADLESS", envbuffer, sizeof(envbuffer))) { |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2896 if (!add_property("java.awt.headless=true")) { |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2897 return JNI_ENOMEM; |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2898 } |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2899 } else { |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2900 char buffer[256]; |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2901 strcpy(buffer, "java.awt.headless="); |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2902 strcat(buffer, envbuffer); |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2903 if (!add_property(buffer)) { |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2904 return JNI_ENOMEM; |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2905 } |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2906 } |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2907 } |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2908 } |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2909 |
0 | 2910 if (!check_vm_args_consistency()) { |
2911 return JNI_ERR; | |
2912 } | |
2913 | |
2914 return JNI_OK; | |
2915 } | |
2916 | |
2917 jint Arguments::parse_java_options_environment_variable(SysClassPath* scp_p, bool* scp_assembly_required_p) { | |
2918 return parse_options_environment_variable("_JAVA_OPTIONS", scp_p, | |
2919 scp_assembly_required_p); | |
2920 } | |
2921 | |
2922 jint Arguments::parse_java_tool_options_environment_variable(SysClassPath* scp_p, bool* scp_assembly_required_p) { | |
2923 return parse_options_environment_variable("JAVA_TOOL_OPTIONS", scp_p, | |
2924 scp_assembly_required_p); | |
2925 } | |
2926 | |
2927 jint Arguments::parse_options_environment_variable(const char* name, SysClassPath* scp_p, bool* scp_assembly_required_p) { | |
2928 const int N_MAX_OPTIONS = 64; | |
2929 const int OPTION_BUFFER_SIZE = 1024; | |
2930 char buffer[OPTION_BUFFER_SIZE]; | |
2931 | |
2932 // The variable will be ignored if it exceeds the length of the buffer. | |
2933 // Don't check this variable if user has special privileges | |
2934 // (e.g. unix su command). | |
2935 if (os::getenv(name, buffer, sizeof(buffer)) && | |
2936 !os::have_special_privileges()) { | |
2937 JavaVMOption options[N_MAX_OPTIONS]; // Construct option array | |
2938 jio_fprintf(defaultStream::error_stream(), | |
2939 "Picked up %s: %s\n", name, buffer); | |
2940 char* rd = buffer; // pointer to the input string (rd) | |
2941 int i; | |
2942 for (i = 0; i < N_MAX_OPTIONS;) { // repeat for all options in the input string | |
2943 while (isspace(*rd)) rd++; // skip whitespace | |
2944 if (*rd == 0) break; // we re done when the input string is read completely | |
2945 | |
2946 // The output, option string, overwrites the input string. | |
2947 // Because of quoting, the pointer to the option string (wrt) may lag the pointer to | |
2948 // input string (rd). | |
2949 char* wrt = rd; | |
2950 | |
2951 options[i++].optionString = wrt; // Fill in option | |
2952 while (*rd != 0 && !isspace(*rd)) { // unquoted strings terminate with a space or NULL | |
2953 if (*rd == '\'' || *rd == '"') { // handle a quoted string | |
2954 int quote = *rd; // matching quote to look for | |
2955 rd++; // don't copy open quote | |
2956 while (*rd != quote) { // include everything (even spaces) up until quote | |
2957 if (*rd == 0) { // string termination means unmatched string | |
2958 jio_fprintf(defaultStream::error_stream(), | |
2959 "Unmatched quote in %s\n", name); | |
2960 return JNI_ERR; | |
2961 } | |
2962 *wrt++ = *rd++; // copy to option string | |
2963 } | |
2964 rd++; // don't copy close quote | |
2965 } else { | |
2966 *wrt++ = *rd++; // copy to option string | |
2967 } | |
2968 } | |
2969 // Need to check if we're done before writing a NULL, | |
2970 // because the write could be to the byte that rd is pointing to. | |
2971 if (*rd++ == 0) { | |
2972 *wrt = 0; | |
2973 break; | |
2974 } | |
2975 *wrt = 0; // Zero terminate option | |
2976 } | |
2977 // Construct JavaVMInitArgs structure and parse as if it was part of the command line | |
2978 JavaVMInitArgs vm_args; | |
2979 vm_args.version = JNI_VERSION_1_2; | |
2980 vm_args.options = options; | |
2981 vm_args.nOptions = i; | |
564 | 2982 vm_args.ignoreUnrecognized = IgnoreUnrecognizedVMOptions; |
0 | 2983 |
2984 if (PrintVMOptions) { | |
2985 const char* tail; | |
2986 for (int i = 0; i < vm_args.nOptions; i++) { | |
2987 const JavaVMOption *option = vm_args.options + i; | |
2988 if (match_option(option, "-XX:", &tail)) { | |
2989 logOption(tail); | |
2990 } | |
2991 } | |
2992 } | |
2993 | |
2994 return(parse_each_vm_init_arg(&vm_args, scp_p, scp_assembly_required_p, ENVIRON_VAR)); | |
2995 } | |
2996 return JNI_OK; | |
2997 } | |
2998 | |
2362
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2999 void Arguments::set_shared_spaces_flags() { |
2378 | 3000 const bool must_share = DumpSharedSpaces || RequireSharedSpaces; |
3001 const bool might_share = must_share || UseSharedSpaces; | |
3002 | |
6725
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3003 // CompressedOops cannot be used with CDS. The offsets of oopmaps and |
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3004 // static fields are incorrect in the archive. With some more clever |
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3005 // initialization, this restriction can probably be lifted. |
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3006 // ??? UseLargePages might be okay now |
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3007 const bool cannot_share = UseCompressedOops || |
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3008 (UseLargePages && FLAG_IS_CMDLINE(UseLargePages)); |
2362
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3009 if (cannot_share) { |
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3010 if (must_share) { |
6736
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|
3011 warning("disabling large pages %s" |
2378 | 3012 "because of %s", "" LP64_ONLY("and compressed oops "), |
3013 DumpSharedSpaces ? "-Xshare:dump" : "-Xshare:on"); | |
3014 FLAG_SET_CMDLINE(bool, UseLargePages, false); | |
3015 LP64_ONLY(FLAG_SET_CMDLINE(bool, UseCompressedOops, false)); | |
6725
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3016 LP64_ONLY(FLAG_SET_CMDLINE(bool, UseCompressedKlassPointers, false)); |
2362
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3017 } else { |
6725
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3018 // Prefer compressed oops and large pages to class data sharing |
2362
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3019 if (UseSharedSpaces && Verbose) { |
6725
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3020 warning("turning off use of shared archive because of large pages%s", |
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3021 "" LP64_ONLY(" and/or compressed oops")); |
2362
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|
3022 } |
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|
3023 no_shared_spaces(); |
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|
3024 } |
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3025 } else if (UseLargePages && might_share) { |
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3026 // Disable large pages to allow shared spaces. This is sub-optimal, since |
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|
3027 // there may not even be a shared archive to use. |
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|
3028 FLAG_SET_DEFAULT(UseLargePages, false); |
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|
3029 } |
6725
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3030 |
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3031 if (DumpSharedSpaces) { |
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3032 if (RequireSharedSpaces) { |
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3033 warning("cannot dump shared archive while using shared archive"); |
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|
3034 } |
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3035 UseSharedSpaces = false; |
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3036 } |
2362
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|
3037 } |
1891
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|
3038 |
3797
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3039 // Disable options not supported in this release, with a warning if they |
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3040 // were explicitly requested on the command-line |
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|
3041 #define UNSUPPORTED_OPTION(opt, description) \ |
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3042 do { \ |
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|
3043 if (opt) { \ |
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3044 if (FLAG_IS_CMDLINE(opt)) { \ |
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|
3045 warning(description " is disabled in this release."); \ |
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|
3046 } \ |
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|
3047 FLAG_SET_DEFAULT(opt, false); \ |
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|
3048 } \ |
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|
3049 } while(0) |
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3050 |
0 | 3051 // Parse entry point called from JNI_CreateJavaVM |
3052 | |
3053 jint Arguments::parse(const JavaVMInitArgs* args) { | |
3054 | |
3055 // Sharing support | |
3056 // Construct the path to the archive | |
3057 char jvm_path[JVM_MAXPATHLEN]; | |
3058 os::jvm_path(jvm_path, sizeof(jvm_path)); | |
3059 char *end = strrchr(jvm_path, *os::file_separator()); | |
3060 if (end != NULL) *end = '\0'; | |
3061 char *shared_archive_path = NEW_C_HEAP_ARRAY(char, strlen(jvm_path) + | |
6197 | 3062 strlen(os::file_separator()) + 20, mtInternal); |
0 | 3063 if (shared_archive_path == NULL) return JNI_ENOMEM; |
3064 strcpy(shared_archive_path, jvm_path); | |
3065 strcat(shared_archive_path, os::file_separator()); | |
3066 strcat(shared_archive_path, "classes"); | |
3067 strcat(shared_archive_path, ".jsa"); | |
3068 SharedArchivePath = shared_archive_path; | |
3069 | |
3070 // Remaining part of option string | |
3071 const char* tail; | |
3072 | |
3073 // If flag "-XX:Flags=flags-file" is used it will be the first option to be processed. | |
6196
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|
3074 const char* hotspotrc = ".hotspotrc"; |
0 | 3075 bool settings_file_specified = false; |
6196
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|
3076 bool needs_hotspotrc_warning = false; |
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3077 |
564 | 3078 const char* flags_file; |
0 | 3079 int index; |
3080 for (index = 0; index < args->nOptions; index++) { | |
3081 const JavaVMOption *option = args->options + index; | |
3082 if (match_option(option, "-XX:Flags=", &tail)) { | |
564 | 3083 flags_file = tail; |
0 | 3084 settings_file_specified = true; |
3085 } | |
3086 if (match_option(option, "-XX:+PrintVMOptions", &tail)) { | |
3087 PrintVMOptions = true; | |
3088 } | |
253
b0fe4deeb9fb
6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.")
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diff
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|
3089 if (match_option(option, "-XX:-PrintVMOptions", &tail)) { |
b0fe4deeb9fb
6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.")
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|
3090 PrintVMOptions = false; |
b0fe4deeb9fb
6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.")
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|
3091 } |
564 | 3092 if (match_option(option, "-XX:+IgnoreUnrecognizedVMOptions", &tail)) { |
3093 IgnoreUnrecognizedVMOptions = true; | |
3094 } | |
3095 if (match_option(option, "-XX:-IgnoreUnrecognizedVMOptions", &tail)) { | |
3096 IgnoreUnrecognizedVMOptions = false; | |
3097 } | |
1150 | 3098 if (match_option(option, "-XX:+PrintFlagsInitial", &tail)) { |
4773 | 3099 CommandLineFlags::printFlags(tty, false); |
1150 | 3100 vm_exit(0); |
3101 } | |
6197 | 3102 if (match_option(option, "-XX:NativeMemoryTracking", &tail)) { |
6854
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|
3103 #if INCLUDE_NMT |
6197 | 3104 MemTracker::init_tracking_options(tail); |
6854
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|
3105 #else |
fb19af007ffc
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|
3106 warning("Native Memory Tracking is not supported in this VM"); |
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|
3107 #endif |
6197 | 3108 } |
3109 | |
1768
6ee479178066
6979444: add command line option to print command line flags descriptions
ikrylov
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1745
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|
3110 |
6ee479178066
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|
3111 #ifndef PRODUCT |
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ikrylov
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|
3112 if (match_option(option, "-XX:+PrintFlagsWithComments", &tail)) { |
4773 | 3113 CommandLineFlags::printFlags(tty, true); |
1768
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6979444: add command line option to print command line flags descriptions
ikrylov
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diff
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|
3114 vm_exit(0); |
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6979444: add command line option to print command line flags descriptions
ikrylov
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|
3115 } |
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|
3116 #endif |
564 | 3117 } |
3118 | |
3119 if (IgnoreUnrecognizedVMOptions) { | |
3120 // uncast const to modify the flag args->ignoreUnrecognized | |
3121 *(jboolean*)(&args->ignoreUnrecognized) = true; | |
3122 } | |
3123 | |
3124 // Parse specified settings file | |
3125 if (settings_file_specified) { | |
3126 if (!process_settings_file(flags_file, true, args->ignoreUnrecognized)) { | |
3127 return JNI_EINVAL; | |
3128 } | |
6196
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|
3129 } else { |
6150
1e76463170b3
7110720: Issue with vm config file loadingIssue with vm config file loading
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|
3130 #ifdef ASSERT |
6196
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|
3131 // Parse default .hotspotrc settings file |
0 | 3132 if (!process_settings_file(".hotspotrc", false, args->ignoreUnrecognized)) { |
3133 return JNI_EINVAL; | |
3134 } | |
6196
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|
3135 #else |
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|
3136 struct stat buf; |
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|
3137 if (os::stat(hotspotrc, &buf) == 0) { |
3759236eea14
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|
3138 needs_hotspotrc_warning = true; |
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|
3139 } |
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|
3140 #endif |
0 | 3141 } |
3142 | |
3143 if (PrintVMOptions) { | |
3144 for (index = 0; index < args->nOptions; index++) { | |
3145 const JavaVMOption *option = args->options + index; | |
3146 if (match_option(option, "-XX:", &tail)) { | |
3147 logOption(tail); | |
3148 } | |
3149 } | |
3150 } | |
3151 | |
3152 // Parse JavaVMInitArgs structure passed in, as well as JAVA_TOOL_OPTIONS and _JAVA_OPTIONS | |
3153 jint result = parse_vm_init_args(args); | |
3154 if (result != JNI_OK) { | |
3155 return result; | |
3156 } | |
3157 | |
6196
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|
3158 // Delay warning until here so that we've had a chance to process |
3759236eea14
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3159 // the -XX:-PrintWarnings flag |
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|
3160 if (needs_hotspotrc_warning) { |
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|
3161 warning("%s file is present but has been ignored. " |
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3162 "Run with -XX:Flags=%s to load the file.", |
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|
3163 hotspotrc, hotspotrc); |
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|
3164 } |
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|
3165 |
6055
35e504cb49a6
7167625: Adjustments for SE-Embedded build process
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|
3166 #if (defined JAVASE_EMBEDDED || defined ARM) |
3797
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|
3167 UNSUPPORTED_OPTION(UseG1GC, "G1 GC"); |
eb94b7226b7a
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|
3168 #endif |
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|
3169 |
6917
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7191817: -XX:+UseSerialGC -XX:+UseLargePages crashes with SIGFPE on MacOS X
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|
3170 #ifdef _ALLBSD_SOURCE // UseLargePages is not yet supported on BSD. |
e81fbc04a942
7191817: -XX:+UseSerialGC -XX:+UseLargePages crashes with SIGFPE on MacOS X
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|
3171 UNSUPPORTED_OPTION(UseLargePages, "-XX:+UseLargePages"); |
e81fbc04a942
7191817: -XX:+UseSerialGC -XX:+UseLargePages crashes with SIGFPE on MacOS X
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|
3172 #endif |
e81fbc04a942
7191817: -XX:+UseSerialGC -XX:+UseLargePages crashes with SIGFPE on MacOS X
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|
3173 |
6854
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|
3174 #if !INCLUDE_ALTERNATE_GCS |
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|
3175 if (UseParallelGC) { |
fb19af007ffc
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|
3176 warning("Parallel GC is not supported in this VM. Using Serial GC."); |
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|
3177 } |
fb19af007ffc
7189254: Change makefiles for more flexibility to override defaults
jprovino
parents:
6818
diff
changeset
|
3178 if (UseParallelOldGC) { |
fb19af007ffc
7189254: Change makefiles for more flexibility to override defaults
jprovino
parents:
6818
diff
changeset
|
3179 warning("Parallel Old GC is not supported in this VM. Using Serial GC."); |
fb19af007ffc
7189254: Change makefiles for more flexibility to override defaults
jprovino
parents:
6818
diff
changeset
|
3180 } |
fb19af007ffc
7189254: Change makefiles for more flexibility to override defaults
jprovino
parents:
6818
diff
changeset
|
3181 if (UseConcMarkSweepGC) { |
fb19af007ffc
7189254: Change makefiles for more flexibility to override defaults
jprovino
parents:
6818
diff
changeset
|
3182 warning("Concurrent Mark Sweep GC is not supported in this VM. Using Serial GC."); |
fb19af007ffc
7189254: Change makefiles for more flexibility to override defaults
jprovino
parents:
6818
diff
changeset
|
3183 } |
fb19af007ffc
7189254: Change makefiles for more flexibility to override defaults
jprovino
parents:
6818
diff
changeset
|
3184 if (UseParNewGC) { |
fb19af007ffc
7189254: Change makefiles for more flexibility to override defaults
jprovino
parents:
6818
diff
changeset
|
3185 warning("Par New GC is not supported in this VM. Using Serial GC."); |
fb19af007ffc
7189254: Change makefiles for more flexibility to override defaults
jprovino
parents:
6818
diff
changeset
|
3186 } |
fb19af007ffc
7189254: Change makefiles for more flexibility to override defaults
jprovino
parents:
6818
diff
changeset
|
3187 #endif // INCLUDE_ALTERNATE_GCS |
fb19af007ffc
7189254: Change makefiles for more flexibility to override defaults
jprovino
parents:
6818
diff
changeset
|
3188 |
0 | 3189 #ifndef PRODUCT |
3190 if (TraceBytecodesAt != 0) { | |
3191 TraceBytecodes = true; | |
3192 } | |
3193 if (CountCompiledCalls) { | |
3194 if (UseCounterDecay) { | |
3195 warning("UseCounterDecay disabled because CountCalls is set"); | |
3196 UseCounterDecay = false; | |
3197 } | |
3198 } | |
3199 #endif // PRODUCT | |
3200 | |
2416
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
3201 // 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
|
3202 if (!JDK_Version::is_gte_jdk17x_version()) { |
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
3203 if (EnableInvokeDynamic) { |
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
3204 if (!FLAG_IS_DEFAULT(EnableInvokeDynamic)) { |
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
3205 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
|
3206 } |
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
3207 EnableInvokeDynamic = false; |
710 | 3208 } |
3209 } | |
2416
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
3210 |
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
3211 if (EnableInvokeDynamic && ScavengeRootsInCode == 0) { |
989
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
932
diff
changeset
|
3212 if (!FLAG_IS_DEFAULT(ScavengeRootsInCode)) { |
2416
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
3213 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
|
3214 } |
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
932
diff
changeset
|
3215 ScavengeRootsInCode = 1; |
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
932
diff
changeset
|
3216 } |
710 | 3217 |
0 | 3218 if (PrintGCDetails) { |
3219 // Turn on -verbose:gc options as well | |
3220 PrintGC = true; | |
3221 } | |
3222 | |
6064
9d679effd28c
7166894: Add gc cause to GC logging for all collectors
brutisso
parents:
6017
diff
changeset
|
3223 if (!JDK_Version::is_gte_jdk18x_version()) { |
9d679effd28c
7166894: Add gc cause to GC logging for all collectors
brutisso
parents:
6017
diff
changeset
|
3224 // To avoid changing the log format for 7 updates this flag is only |
9d679effd28c
7166894: Add gc cause to GC logging for all collectors
brutisso
parents:
6017
diff
changeset
|
3225 // true by default in JDK8 and above. |
9d679effd28c
7166894: Add gc cause to GC logging for all collectors
brutisso
parents:
6017
diff
changeset
|
3226 if (FLAG_IS_DEFAULT(PrintGCCause)) { |
9d679effd28c
7166894: Add gc cause to GC logging for all collectors
brutisso
parents:
6017
diff
changeset
|
3227 FLAG_SET_DEFAULT(PrintGCCause, false); |
9d679effd28c
7166894: Add gc cause to GC logging for all collectors
brutisso
parents:
6017
diff
changeset
|
3228 } |
9d679effd28c
7166894: Add gc cause to GC logging for all collectors
brutisso
parents:
6017
diff
changeset
|
3229 } |
9d679effd28c
7166894: Add gc cause to GC logging for all collectors
brutisso
parents:
6017
diff
changeset
|
3230 |
1571
2d127394260e
6916623: Align object to 16 bytes to use Compressed Oops with java heap up to 64Gb
kvn
parents:
1506
diff
changeset
|
3231 // 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
|
3232 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
|
3233 |
0 | 3234 #ifdef SERIALGC |
1064 | 3235 force_serial_gc(); |
0 | 3236 #endif // SERIALGC |
6854
fb19af007ffc
7189254: Change makefiles for more flexibility to override defaults
jprovino
parents:
6818
diff
changeset
|
3237 #if !INCLUDE_CDS |
0 | 3238 no_shared_spaces(); |
6854
fb19af007ffc
7189254: Change makefiles for more flexibility to override defaults
jprovino
parents:
6818
diff
changeset
|
3239 #endif // INCLUDE_CDS |
0 | 3240 |
3241 // Set flags based on ergonomics. | |
3242 set_ergonomics_flags(); | |
3243 | |
2362
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
3244 set_shared_spaces_flags(); |
1135
e66fd840cb6b
6893081: method handle & invokedynamic code needs additional cleanup (post 6815692, 6858164)
twisti
parents:
1131
diff
changeset
|
3245 |
10
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
3246 // Check the GC selections again. |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
3247 if (!check_gc_consistency()) { |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
3248 return JNI_EINVAL; |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
3249 } |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
3250 |
1783 | 3251 if (TieredCompilation) { |
3252 set_tiered_flags(); | |
3253 } else { | |
3254 // Check if the policy is valid. Policies 0 and 1 are valid for non-tiered setup. | |
3255 if (CompilationPolicyChoice >= 2) { | |
3256 vm_exit_during_initialization( | |
3257 "Incompatible compilation policy selected", NULL); | |
3258 } | |
3259 } | |
3260 | |
2368
dde920245681
6896099: Integrate CMS heap ergo with default heap sizing ergo
ysr
parents:
2366
diff
changeset
|
3261 // Set heap size based on available physical memory |
dde920245681
6896099: Integrate CMS heap ergo with default heap sizing ergo
ysr
parents:
2366
diff
changeset
|
3262 set_heap_size(); |
6854
fb19af007ffc
7189254: Change makefiles for more flexibility to override defaults
jprovino
parents:
6818
diff
changeset
|
3263 |
fb19af007ffc
7189254: Change makefiles for more flexibility to override defaults
jprovino
parents:
6818
diff
changeset
|
3264 #if INCLUDE_ALTERNATE_GCS |
2368
dde920245681
6896099: Integrate CMS heap ergo with default heap sizing ergo
ysr
parents:
2366
diff
changeset
|
3265 // Set per-collector flags |
dde920245681
6896099: Integrate CMS heap ergo with default heap sizing ergo
ysr
parents:
2366
diff
changeset
|
3266 if (UseParallelGC || UseParallelOldGC) { |
dde920245681
6896099: Integrate CMS heap ergo with default heap sizing ergo
ysr
parents:
2366
diff
changeset
|
3267 set_parallel_gc_flags(); |
dde920245681
6896099: Integrate CMS heap ergo with default heap sizing ergo
ysr
parents:
2366
diff
changeset
|
3268 } 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
|
3269 set_cms_and_parnew_gc_flags(); |
2368
dde920245681
6896099: Integrate CMS heap ergo with default heap sizing ergo
ysr
parents:
2366
diff
changeset
|
3270 } 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
|
3271 set_parnew_gc_flags(); |
dde920245681
6896099: Integrate CMS heap ergo with default heap sizing ergo
ysr
parents:
2366
diff
changeset
|
3272 } else if (UseG1GC) { |
dde920245681
6896099: Integrate CMS heap ergo with default heap sizing ergo
ysr
parents:
2366
diff
changeset
|
3273 set_g1_gc_flags(); |
342
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
135
diff
changeset
|
3274 } |
7452
e0ab18eafbde
8003820: Deprecate untested and rarely used GC combinations
brutisso
parents:
7451
diff
changeset
|
3275 check_deprecated_gcs(); |
6854
fb19af007ffc
7189254: Change makefiles for more flexibility to override defaults
jprovino
parents:
6818
diff
changeset
|
3276 #endif // INCLUDE_ALTERNATE_GCS |
10
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
3277 |
0 | 3278 #ifdef SERIALGC |
3279 assert(verify_serial_gc_flags(), "SerialGC unset"); | |
3280 #endif // SERIALGC | |
3281 | |
3282 // Set bytecode rewriting flags | |
3283 set_bytecode_flags(); | |
3284 | |
3285 // Set flags if Aggressive optimization flags (-XX:+AggressiveOpts) enabled. | |
3286 set_aggressive_opts_flags(); | |
3287 | |
2239
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3288 // Turn off biased locking for locking debug mode flags, |
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3289 // which are subtlely different from each other but neither works with |
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3290 // biased locking. |
2331 | 3291 if (UseHeavyMonitors |
3292 #ifdef COMPILER1 | |
3293 || !UseFastLocking | |
3294 #endif // COMPILER1 | |
3295 ) { | |
2239
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3296 if (!FLAG_IS_DEFAULT(UseBiasedLocking) && UseBiasedLocking) { |
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3297 // flag set to true on command line; warn the user that they |
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3298 // can't enable biased locking here |
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3299 warning("Biased Locking is not supported with locking debug flags" |
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3300 "; ignoring UseBiasedLocking flag." ); |
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3301 } |
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3302 UseBiasedLocking = false; |
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3303 } |
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3304 |
0 | 3305 #ifdef CC_INTERP |
1131 | 3306 // Clear flags not supported by the C++ interpreter |
3307 FLAG_SET_DEFAULT(ProfileInterpreter, false); | |
0 | 3308 FLAG_SET_DEFAULT(UseBiasedLocking, false); |
1131 | 3309 LP64_ONLY(FLAG_SET_DEFAULT(UseCompressedOops, false)); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6628
diff
changeset
|
3310 LP64_ONLY(FLAG_SET_DEFAULT(UseCompressedKlassPointers, false)); |
1131 | 3311 #endif // CC_INTERP |
3312 | |
420
a1980da045cc
6462850: generate biased locking code in C2 ideal graph
kvn
parents:
416
diff
changeset
|
3313 #ifdef COMPILER2 |
a1980da045cc
6462850: generate biased locking code in C2 ideal graph
kvn
parents:
416
diff
changeset
|
3314 if (!UseBiasedLocking || EmitSync != 0) { |
a1980da045cc
6462850: generate biased locking code in C2 ideal graph
kvn
parents:
416
diff
changeset
|
3315 UseOptoBiasInlining = false; |
a1980da045cc
6462850: generate biased locking code in C2 ideal graph
kvn
parents:
416
diff
changeset
|
3316 } |
4777 | 3317 if (!EliminateLocks) { |
3318 EliminateNestedLocks = false; | |
3319 } | |
7473 | 3320 if (!Inline) { |
3321 IncrementalInline = false; | |
3322 } | |
3323 #ifndef PRODUCT | |
3324 if (!IncrementalInline) { | |
3325 AlwaysIncrementalInline = false; | |
3326 } | |
3327 #endif | |
3328 if (IncrementalInline && FLAG_IS_DEFAULT(MaxNodeLimit)) { | |
3329 // incremental inlining: bump MaxNodeLimit | |
3330 FLAG_SET_DEFAULT(MaxNodeLimit, (intx)75000); | |
3331 } | |
420
a1980da045cc
6462850: generate biased locking code in C2 ideal graph
kvn
parents:
416
diff
changeset
|
3332 #endif |
a1980da045cc
6462850: generate biased locking code in C2 ideal graph
kvn
parents:
416
diff
changeset
|
3333 |
1155
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1150
diff
changeset
|
3334 if (PrintAssembly && FLAG_IS_DEFAULT(DebugNonSafepoints)) { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1150
diff
changeset
|
3335 warning("PrintAssembly is enabled; turning on DebugNonSafepoints to gain additional output"); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1150
diff
changeset
|
3336 DebugNonSafepoints = true; |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1150
diff
changeset
|
3337 } |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1150
diff
changeset
|
3338 |
1188
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents:
1161
diff
changeset
|
3339 #ifndef PRODUCT |
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents:
1161
diff
changeset
|
3340 if (CompileTheWorld) { |
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents:
1161
diff
changeset
|
3341 // Force NmethodSweeper to sweep whole CodeCache each time. |
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents:
1161
diff
changeset
|
3342 if (FLAG_IS_DEFAULT(NmethodSweepFraction)) { |
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents:
1161
diff
changeset
|
3343 NmethodSweepFraction = 1; |
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents:
1161
diff
changeset
|
3344 } |
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents:
1161
diff
changeset
|
3345 } |
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents:
1161
diff
changeset
|
3346 #endif |
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents:
1161
diff
changeset
|
3347 |
0 | 3348 if (PrintCommandLineFlags) { |
4773 | 3349 CommandLineFlags::printSetFlags(tty); |
0 | 3350 } |
3351 | |
1681
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
3352 // Apply CPU specific policy for the BiasedLocking |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
3353 if (UseBiasedLocking) { |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
3354 if (!VM_Version::use_biased_locking() && |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
3355 !(FLAG_IS_CMDLINE(UseBiasedLocking))) { |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
3356 UseBiasedLocking = false; |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
3357 } |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
3358 } |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
3359 |
2302
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
3360 // set PauseAtExit if the gamma launcher was used and a debugger is attached |
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
3361 // but only if not already set on the commandline |
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
3362 if (Arguments::created_by_gamma_launcher() && os::is_debugger_attached()) { |
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
3363 bool set = false; |
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
3364 CommandLineFlags::wasSetOnCmdline("PauseAtExit", &set); |
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
3365 if (!set) { |
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
3366 FLAG_SET_DEFAULT(PauseAtExit, true); |
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
3367 } |
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
3368 } |
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
3369 |
0 | 3370 return JNI_OK; |
3371 } | |
3372 | |
7177
53715fb1597d
7198334: UseNUMA modifies system parameters on non-NUMA system
brutisso
parents:
6982
diff
changeset
|
3373 jint Arguments::adjust_after_os() { |
53715fb1597d
7198334: UseNUMA modifies system parameters on non-NUMA system
brutisso
parents:
6982
diff
changeset
|
3374 #if INCLUDE_ALTERNATE_GCS |
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3375 if (UseParallelGC || UseParallelOldGC) { |
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3376 if (UseNUMA) { |
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3377 if (FLAG_IS_DEFAULT(MinHeapDeltaBytes)) { |
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3378 FLAG_SET_DEFAULT(MinHeapDeltaBytes, 64*M); |
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3379 } |
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3380 // For those collectors or operating systems (eg, Windows) that do |
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3381 // not support full UseNUMA, we will map to UseNUMAInterleaving for now |
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3382 UseNUMAInterleaving = true; |
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3383 } |
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3384 } |
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3385 #endif |
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3386 return JNI_OK; |
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3387 } |
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3388 |
0 | 3389 int Arguments::PropertyList_count(SystemProperty* pl) { |
3390 int count = 0; | |
3391 while(pl != NULL) { | |
3392 count++; | |
3393 pl = pl->next(); | |
3394 } | |
3395 return count; | |
3396 } | |
3397 | |
3398 const char* Arguments::PropertyList_get_value(SystemProperty *pl, const char* key) { | |
3399 assert(key != NULL, "just checking"); | |
3400 SystemProperty* prop; | |
3401 for (prop = pl; prop != NULL; prop = prop->next()) { | |
3402 if (strcmp(key, prop->key()) == 0) return prop->value(); | |
3403 } | |
3404 return NULL; | |
3405 } | |
3406 | |
3407 const char* Arguments::PropertyList_get_key_at(SystemProperty *pl, int index) { | |
3408 int count = 0; | |
3409 const char* ret_val = NULL; | |
3410 | |
3411 while(pl != NULL) { | |
3412 if(count >= index) { | |
3413 ret_val = pl->key(); | |
3414 break; | |
3415 } | |
3416 count++; | |
3417 pl = pl->next(); | |
3418 } | |
3419 | |
3420 return ret_val; | |
3421 } | |
3422 | |
3423 char* Arguments::PropertyList_get_value_at(SystemProperty* pl, int index) { | |
3424 int count = 0; | |
3425 char* ret_val = NULL; | |
3426 | |
3427 while(pl != NULL) { | |
3428 if(count >= index) { | |
3429 ret_val = pl->value(); | |
3430 break; | |
3431 } | |
3432 count++; | |
3433 pl = pl->next(); | |
3434 } | |
3435 | |
3436 return ret_val; | |
3437 } | |
3438 | |
3439 void Arguments::PropertyList_add(SystemProperty** plist, SystemProperty *new_p) { | |
3440 SystemProperty* p = *plist; | |
3441 if (p == NULL) { | |
3442 *plist = new_p; | |
3443 } else { | |
3444 while (p->next() != NULL) { | |
3445 p = p->next(); | |
3446 } | |
3447 p->set_next(new_p); | |
3448 } | |
3449 } | |
3450 | |
3451 void Arguments::PropertyList_add(SystemProperty** plist, const char* k, char* v) { | |
3452 if (plist == NULL) | |
3453 return; | |
3454 | |
3455 SystemProperty* new_p = new SystemProperty(k, v, true); | |
3456 PropertyList_add(plist, new_p); | |
3457 } | |
3458 | |
3459 // This add maintains unique property key in the list. | |
691 | 3460 void Arguments::PropertyList_unique_add(SystemProperty** plist, const char* k, char* v, jboolean append) { |
0 | 3461 if (plist == NULL) |
3462 return; | |
3463 | |
3464 // If property key exist then update with new value. | |
3465 SystemProperty* prop; | |
3466 for (prop = *plist; prop != NULL; prop = prop->next()) { | |
3467 if (strcmp(k, prop->key()) == 0) { | |
691 | 3468 if (append) { |
3469 prop->append_value(v); | |
3470 } else { | |
3471 prop->set_value(v); | |
3472 } | |
0 | 3473 return; |
3474 } | |
3475 } | |
3476 | |
3477 PropertyList_add(plist, k, v); | |
3478 } | |
3479 | |
3480 // Copies src into buf, replacing "%%" with "%" and "%p" with pid | |
3481 // Returns true if all of the source pointed by src has been copied over to | |
3482 // the destination buffer pointed by buf. Otherwise, returns false. | |
3483 // Notes: | |
3484 // 1. If the length (buflen) of the destination buffer excluding the | |
3485 // NULL terminator character is not long enough for holding the expanded | |
3486 // pid characters, it also returns false instead of returning the partially | |
3487 // expanded one. | |
3488 // 2. The passed in "buflen" should be large enough to hold the null terminator. | |
3489 bool Arguments::copy_expand_pid(const char* src, size_t srclen, | |
3490 char* buf, size_t buflen) { | |
3491 const char* p = src; | |
3492 char* b = buf; | |
3493 const char* src_end = &src[srclen]; | |
3494 char* buf_end = &buf[buflen - 1]; | |
3495 | |
3496 while (p < src_end && b < buf_end) { | |
3497 if (*p == '%') { | |
3498 switch (*(++p)) { | |
3499 case '%': // "%%" ==> "%" | |
3500 *b++ = *p++; | |
3501 break; | |
3502 case 'p': { // "%p" ==> current process id | |
3503 // buf_end points to the character before the last character so | |
3504 // that we could write '\0' to the end of the buffer. | |
3505 size_t buf_sz = buf_end - b + 1; | |
3506 int ret = jio_snprintf(b, buf_sz, "%d", os::current_process_id()); | |
3507 | |
3508 // if jio_snprintf fails or the buffer is not long enough to hold | |
3509 // the expanded pid, returns false. | |
3510 if (ret < 0 || ret >= (int)buf_sz) { | |
3511 return false; | |
3512 } else { | |
3513 b += ret; | |
3514 assert(*b == '\0', "fail in copy_expand_pid"); | |
3515 if (p == src_end && b == buf_end + 1) { | |
3516 // reach the end of the buffer. | |
3517 return true; | |
3518 } | |
3519 } | |
3520 p++; | |
3521 break; | |
3522 } | |
3523 default : | |
3524 *b++ = '%'; | |
3525 } | |
3526 } else { | |
3527 *b++ = *p++; | |
3528 } | |
3529 } | |
3530 *b = '\0'; | |
3531 return (p == src_end); // return false if not all of the source was copied | |
3532 } |