Mercurial > hg > graal-compiler
annotate src/share/vm/runtime/arguments.cpp @ 6910:6ba00f89fbe1
Merge
author | asaha |
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date | Thu, 11 Oct 2012 15:29:16 -0700 |
parents | 218a94758fe7 22b8d3d181d9 |
children | d2582a08fa5d |
rev | line source |
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0 | 1 /* |
4838 | 2 * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #include "precompiled.hpp" |
26 #include "classfile/javaAssertions.hpp" | |
27 #include "compiler/compilerOracle.hpp" | |
28 #include "memory/allocation.inline.hpp" | |
29 #include "memory/cardTableRS.hpp" | |
30 #include "memory/referenceProcessor.hpp" | |
31 #include "memory/universe.inline.hpp" | |
32 #include "oops/oop.inline.hpp" | |
33 #include "prims/jvmtiExport.hpp" | |
34 #include "runtime/arguments.hpp" | |
35 #include "runtime/globals_extension.hpp" | |
36 #include "runtime/java.hpp" | |
37 #include "services/management.hpp" | |
6197 | 38 #include "services/memTracker.hpp" |
1972 | 39 #include "utilities/defaultStream.hpp" |
40 #include "utilities/taskqueue.hpp" | |
41 #ifdef TARGET_OS_FAMILY_linux | |
42 # include "os_linux.inline.hpp" | |
43 #endif | |
44 #ifdef TARGET_OS_FAMILY_solaris | |
45 # include "os_solaris.inline.hpp" | |
46 #endif | |
47 #ifdef TARGET_OS_FAMILY_windows | |
48 # include "os_windows.inline.hpp" | |
49 #endif | |
3960 | 50 #ifdef TARGET_OS_FAMILY_bsd |
51 # include "os_bsd.inline.hpp" | |
52 #endif | |
1972 | 53 #ifndef SERIALGC |
54 #include "gc_implementation/concurrentMarkSweep/compactibleFreeListSpace.hpp" | |
55 #endif | |
0 | 56 |
2474 | 57 // Note: This is a special bug reporting site for the JVM |
58 #define DEFAULT_VENDOR_URL_BUG "http://bugreport.sun.com/bugreport/crash.jsp" | |
0 | 59 #define DEFAULT_JAVA_LAUNCHER "generic" |
60 | |
61 char** Arguments::_jvm_flags_array = NULL; | |
62 int Arguments::_num_jvm_flags = 0; | |
63 char** Arguments::_jvm_args_array = NULL; | |
64 int Arguments::_num_jvm_args = 0; | |
65 char* Arguments::_java_command = NULL; | |
66 SystemProperty* Arguments::_system_properties = NULL; | |
67 const char* Arguments::_gc_log_filename = NULL; | |
68 bool Arguments::_has_profile = false; | |
69 bool Arguments::_has_alloc_profile = false; | |
70 uintx Arguments::_min_heap_size = 0; | |
71 Arguments::Mode Arguments::_mode = _mixed; | |
72 bool Arguments::_java_compiler = false; | |
73 bool Arguments::_xdebug_mode = false; | |
74 const char* Arguments::_java_vendor_url_bug = DEFAULT_VENDOR_URL_BUG; | |
75 const char* Arguments::_sun_java_launcher = DEFAULT_JAVA_LAUNCHER; | |
76 int Arguments::_sun_java_launcher_pid = -1; | |
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77 bool Arguments::_created_by_gamma_launcher = false; |
0 | 78 |
79 // These parameters are reset in method parse_vm_init_args(JavaVMInitArgs*) | |
80 bool Arguments::_AlwaysCompileLoopMethods = AlwaysCompileLoopMethods; | |
81 bool Arguments::_UseOnStackReplacement = UseOnStackReplacement; | |
82 bool Arguments::_BackgroundCompilation = BackgroundCompilation; | |
83 bool Arguments::_ClipInlining = ClipInlining; | |
84 | |
85 char* Arguments::SharedArchivePath = NULL; | |
86 | |
87 AgentLibraryList Arguments::_libraryList; | |
88 AgentLibraryList Arguments::_agentList; | |
89 | |
90 abort_hook_t Arguments::_abort_hook = NULL; | |
91 exit_hook_t Arguments::_exit_hook = NULL; | |
92 vfprintf_hook_t Arguments::_vfprintf_hook = NULL; | |
93 | |
94 | |
95 SystemProperty *Arguments::_java_ext_dirs = NULL; | |
96 SystemProperty *Arguments::_java_endorsed_dirs = NULL; | |
97 SystemProperty *Arguments::_sun_boot_library_path = NULL; | |
98 SystemProperty *Arguments::_java_library_path = NULL; | |
99 SystemProperty *Arguments::_java_home = NULL; | |
100 SystemProperty *Arguments::_java_class_path = NULL; | |
101 SystemProperty *Arguments::_sun_boot_class_path = NULL; | |
102 | |
103 char* Arguments::_meta_index_path = NULL; | |
104 char* Arguments::_meta_index_dir = NULL; | |
105 | |
106 // Check if head of 'option' matches 'name', and sets 'tail' remaining part of option string | |
107 | |
108 static bool match_option(const JavaVMOption *option, const char* name, | |
109 const char** tail) { | |
110 int len = (int)strlen(name); | |
111 if (strncmp(option->optionString, name, len) == 0) { | |
112 *tail = option->optionString + len; | |
113 return true; | |
114 } else { | |
115 return false; | |
116 } | |
117 } | |
118 | |
119 static void logOption(const char* opt) { | |
120 if (PrintVMOptions) { | |
121 jio_fprintf(defaultStream::output_stream(), "VM option '%s'\n", opt); | |
122 } | |
123 } | |
124 | |
125 // Process java launcher properties. | |
126 void Arguments::process_sun_java_launcher_properties(JavaVMInitArgs* args) { | |
127 // See if sun.java.launcher or sun.java.launcher.pid is defined. | |
128 // Must do this before setting up other system properties, | |
129 // as some of them may depend on launcher type. | |
130 for (int index = 0; index < args->nOptions; index++) { | |
131 const JavaVMOption* option = args->options + index; | |
132 const char* tail; | |
133 | |
134 if (match_option(option, "-Dsun.java.launcher=", &tail)) { | |
135 process_java_launcher_argument(tail, option->extraInfo); | |
136 continue; | |
137 } | |
138 if (match_option(option, "-Dsun.java.launcher.pid=", &tail)) { | |
139 _sun_java_launcher_pid = atoi(tail); | |
140 continue; | |
141 } | |
142 } | |
143 } | |
144 | |
145 // Initialize system properties key and value. | |
146 void Arguments::init_system_properties() { | |
147 | |
148 PropertyList_add(&_system_properties, new SystemProperty("java.vm.specification.name", | |
149 "Java Virtual Machine Specification", false)); | |
150 PropertyList_add(&_system_properties, new SystemProperty("java.vm.version", VM_Version::vm_release(), false)); | |
151 PropertyList_add(&_system_properties, new SystemProperty("java.vm.name", VM_Version::vm_name(), false)); | |
152 PropertyList_add(&_system_properties, new SystemProperty("java.vm.info", VM_Version::vm_info_string(), true)); | |
153 | |
154 // following are JVMTI agent writeable properties. | |
155 // Properties values are set to NULL and they are | |
156 // os specific they are initialized in os::init_system_properties_values(). | |
157 _java_ext_dirs = new SystemProperty("java.ext.dirs", NULL, true); | |
158 _java_endorsed_dirs = new SystemProperty("java.endorsed.dirs", NULL, true); | |
159 _sun_boot_library_path = new SystemProperty("sun.boot.library.path", NULL, true); | |
160 _java_library_path = new SystemProperty("java.library.path", NULL, true); | |
161 _java_home = new SystemProperty("java.home", NULL, true); | |
162 _sun_boot_class_path = new SystemProperty("sun.boot.class.path", NULL, true); | |
163 | |
164 _java_class_path = new SystemProperty("java.class.path", "", true); | |
165 | |
166 // Add to System Property list. | |
167 PropertyList_add(&_system_properties, _java_ext_dirs); | |
168 PropertyList_add(&_system_properties, _java_endorsed_dirs); | |
169 PropertyList_add(&_system_properties, _sun_boot_library_path); | |
170 PropertyList_add(&_system_properties, _java_library_path); | |
171 PropertyList_add(&_system_properties, _java_home); | |
172 PropertyList_add(&_system_properties, _java_class_path); | |
173 PropertyList_add(&_system_properties, _sun_boot_class_path); | |
174 | |
175 // Set OS specific system properties values | |
176 os::init_system_properties_values(); | |
177 } | |
178 | |
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179 |
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180 // Update/Initialize System properties after JDK version number is known |
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181 void Arguments::init_version_specific_system_properties() { |
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182 enum { bufsz = 16 }; |
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183 char buffer[bufsz]; |
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184 const char* spec_vendor = "Sun Microsystems Inc."; |
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185 uint32_t spec_version = 0; |
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186 |
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187 if (JDK_Version::is_gte_jdk17x_version()) { |
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188 spec_vendor = "Oracle Corporation"; |
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189 spec_version = JDK_Version::current().major_version(); |
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190 } |
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191 jio_snprintf(buffer, bufsz, "1." UINT32_FORMAT, spec_version); |
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192 |
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193 PropertyList_add(&_system_properties, |
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194 new SystemProperty("java.vm.specification.vendor", spec_vendor, false)); |
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195 PropertyList_add(&_system_properties, |
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196 new SystemProperty("java.vm.specification.version", buffer, false)); |
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197 PropertyList_add(&_system_properties, |
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198 new SystemProperty("java.vm.vendor", VM_Version::vm_vendor(), false)); |
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199 } |
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200 |
242 | 201 /** |
202 * Provide a slightly more user-friendly way of eliminating -XX flags. | |
203 * When a flag is eliminated, it can be added to this list in order to | |
204 * continue accepting this flag on the command-line, while issuing a warning | |
205 * and ignoring the value. Once the JDK version reaches the 'accept_until' | |
206 * limit, we flatly refuse to admit the existence of the flag. This allows | |
207 * a flag to die correctly over JDK releases using HSX. | |
208 */ | |
209 typedef struct { | |
210 const char* name; | |
211 JDK_Version obsoleted_in; // when the flag went away | |
212 JDK_Version accept_until; // which version to start denying the existence | |
213 } ObsoleteFlag; | |
0 | 214 |
242 | 215 static ObsoleteFlag obsolete_jvm_flags[] = { |
216 { "UseTrainGC", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
217 { "UseSpecialLargeObjectHandling", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
218 { "UseOversizedCarHandling", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
219 { "TraceCarAllocation", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
220 { "PrintTrainGCProcessingStats", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
221 { "LogOfCarSpaceSize", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
222 { "OversizedCarThreshold", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
223 { "MinTickInterval", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
224 { "DefaultTickInterval", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
225 { "MaxTickInterval", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
226 { "DelayTickAdjustment", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
227 { "ProcessingToTenuringRatio", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
228 { "MinTrainLength", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
229 { "AppendRatio", JDK_Version::jdk_update(6,10), JDK_Version::jdk(7) }, | |
1064 | 230 { "DefaultMaxRAM", JDK_Version::jdk_update(6,18), JDK_Version::jdk(7) }, |
231 { "DefaultInitialRAMFraction", | |
232 JDK_Version::jdk_update(6,18), JDK_Version::jdk(7) }, | |
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233 { "UseDepthFirstScavengeOrder", |
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234 JDK_Version::jdk_update(6,22), JDK_Version::jdk(7) }, |
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235 { "HandlePromotionFailure", |
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236 JDK_Version::jdk_update(6,24), JDK_Version::jdk(8) }, |
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237 { "MaxLiveObjectEvacuationRatio", |
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238 JDK_Version::jdk_update(6,24), JDK_Version::jdk(8) }, |
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239 { "ForceSharedSpaces", JDK_Version::jdk_update(6,25), JDK_Version::jdk(8) }, |
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240 { "UseParallelOldGCCompacting", |
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241 JDK_Version::jdk_update(6,27), JDK_Version::jdk(8) }, |
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242 { "UseParallelDensePrefixUpdate", |
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243 JDK_Version::jdk_update(6,27), JDK_Version::jdk(8) }, |
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244 { "UseParallelOldGCDensePrefix", |
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245 JDK_Version::jdk_update(6,27), JDK_Version::jdk(8) }, |
2460 | 246 { "AllowTransitionalJSR292", JDK_Version::jdk(7), JDK_Version::jdk(8) }, |
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247 { "UseCompressedStrings", JDK_Version::jdk(7), JDK_Version::jdk(8) }, |
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248 { "CMSPermGenPrecleaningEnabled", JDK_Version::jdk(8), JDK_Version::jdk(9) }, |
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249 { "CMSTriggerPermRatio", JDK_Version::jdk(8), JDK_Version::jdk(9) }, |
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250 { "CMSInitiatingPermOccupancyFraction", JDK_Version::jdk(8), JDK_Version::jdk(9) }, |
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251 { "AdaptivePermSizeWeight", JDK_Version::jdk(8), JDK_Version::jdk(9) }, |
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252 { "PermGenPadding", JDK_Version::jdk(8), JDK_Version::jdk(9) }, |
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253 { "PermMarkSweepDeadRatio", JDK_Version::jdk(8), JDK_Version::jdk(9) }, |
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254 { "PermSize", JDK_Version::jdk(8), JDK_Version::jdk(9) }, |
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255 { "MaxPermSize", JDK_Version::jdk(8), JDK_Version::jdk(9) }, |
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256 { "MinPermHeapExpansion", JDK_Version::jdk(8), JDK_Version::jdk(9) }, |
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257 { "MaxPermHeapExpansion", JDK_Version::jdk(8), JDK_Version::jdk(9) }, |
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258 { "CMSRevisitStackSize", JDK_Version::jdk(8), JDK_Version::jdk(9) }, |
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259 { "PrintRevisitStats", JDK_Version::jdk(8), JDK_Version::jdk(9) }, |
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260 #ifdef PRODUCT |
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261 { "DesiredMethodLimit", |
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262 JDK_Version::jdk_update(7, 2), JDK_Version::jdk(8) }, |
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263 #endif // PRODUCT |
242 | 264 { NULL, JDK_Version(0), JDK_Version(0) } |
265 }; | |
266 | |
267 // Returns true if the flag is obsolete and fits into the range specified | |
268 // for being ignored. In the case that the flag is ignored, the 'version' | |
269 // value is filled in with the version number when the flag became | |
270 // obsolete so that that value can be displayed to the user. | |
271 bool Arguments::is_newly_obsolete(const char *s, JDK_Version* version) { | |
0 | 272 int i = 0; |
242 | 273 assert(version != NULL, "Must provide a version buffer"); |
274 while (obsolete_jvm_flags[i].name != NULL) { | |
275 const ObsoleteFlag& flag_status = obsolete_jvm_flags[i]; | |
0 | 276 // <flag>=xxx form |
277 // [-|+]<flag> form | |
242 | 278 if ((strncmp(flag_status.name, s, strlen(flag_status.name)) == 0) || |
0 | 279 ((s[0] == '+' || s[0] == '-') && |
242 | 280 (strncmp(flag_status.name, &s[1], strlen(flag_status.name)) == 0))) { |
281 if (JDK_Version::current().compare(flag_status.accept_until) == -1) { | |
282 *version = flag_status.obsoleted_in; | |
283 return true; | |
284 } | |
0 | 285 } |
286 i++; | |
287 } | |
288 return false; | |
289 } | |
290 | |
291 // Constructs the system class path (aka boot class path) from the following | |
292 // components, in order: | |
293 // | |
294 // prefix // from -Xbootclasspath/p:... | |
295 // endorsed // the expansion of -Djava.endorsed.dirs=... | |
296 // base // from os::get_system_properties() or -Xbootclasspath= | |
297 // suffix // from -Xbootclasspath/a:... | |
298 // | |
299 // java.endorsed.dirs is a list of directories; any jar or zip files in the | |
300 // directories are added to the sysclasspath just before the base. | |
301 // | |
302 // This could be AllStatic, but it isn't needed after argument processing is | |
303 // complete. | |
304 class SysClassPath: public StackObj { | |
305 public: | |
306 SysClassPath(const char* base); | |
307 ~SysClassPath(); | |
308 | |
309 inline void set_base(const char* base); | |
310 inline void add_prefix(const char* prefix); | |
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311 inline void add_suffix_to_prefix(const char* suffix); |
0 | 312 inline void add_suffix(const char* suffix); |
313 inline void reset_path(const char* base); | |
314 | |
315 // Expand the jar/zip files in each directory listed by the java.endorsed.dirs | |
316 // property. Must be called after all command-line arguments have been | |
317 // processed (in particular, -Djava.endorsed.dirs=...) and before calling | |
318 // combined_path(). | |
319 void expand_endorsed(); | |
320 | |
321 inline const char* get_base() const { return _items[_scp_base]; } | |
322 inline const char* get_prefix() const { return _items[_scp_prefix]; } | |
323 inline const char* get_suffix() const { return _items[_scp_suffix]; } | |
324 inline const char* get_endorsed() const { return _items[_scp_endorsed]; } | |
325 | |
326 // Combine all the components into a single c-heap-allocated string; caller | |
327 // must free the string if/when no longer needed. | |
328 char* combined_path(); | |
329 | |
330 private: | |
331 // Utility routines. | |
332 static char* add_to_path(const char* path, const char* str, bool prepend); | |
333 static char* add_jars_to_path(char* path, const char* directory); | |
334 | |
335 inline void reset_item_at(int index); | |
336 | |
337 // Array indices for the items that make up the sysclasspath. All except the | |
338 // base are allocated in the C heap and freed by this class. | |
339 enum { | |
340 _scp_prefix, // from -Xbootclasspath/p:... | |
341 _scp_endorsed, // the expansion of -Djava.endorsed.dirs=... | |
342 _scp_base, // the default sysclasspath | |
343 _scp_suffix, // from -Xbootclasspath/a:... | |
344 _scp_nitems // the number of items, must be last. | |
345 }; | |
346 | |
347 const char* _items[_scp_nitems]; | |
348 DEBUG_ONLY(bool _expansion_done;) | |
349 }; | |
350 | |
351 SysClassPath::SysClassPath(const char* base) { | |
352 memset(_items, 0, sizeof(_items)); | |
353 _items[_scp_base] = base; | |
354 DEBUG_ONLY(_expansion_done = false;) | |
355 } | |
356 | |
357 SysClassPath::~SysClassPath() { | |
358 // Free everything except the base. | |
359 for (int i = 0; i < _scp_nitems; ++i) { | |
360 if (i != _scp_base) reset_item_at(i); | |
361 } | |
362 DEBUG_ONLY(_expansion_done = false;) | |
363 } | |
364 | |
365 inline void SysClassPath::set_base(const char* base) { | |
366 _items[_scp_base] = base; | |
367 } | |
368 | |
369 inline void SysClassPath::add_prefix(const char* prefix) { | |
370 _items[_scp_prefix] = add_to_path(_items[_scp_prefix], prefix, true); | |
371 } | |
372 | |
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373 inline void SysClassPath::add_suffix_to_prefix(const char* suffix) { |
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374 _items[_scp_prefix] = add_to_path(_items[_scp_prefix], suffix, false); |
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375 } |
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376 |
0 | 377 inline void SysClassPath::add_suffix(const char* suffix) { |
378 _items[_scp_suffix] = add_to_path(_items[_scp_suffix], suffix, false); | |
379 } | |
380 | |
381 inline void SysClassPath::reset_item_at(int index) { | |
382 assert(index < _scp_nitems && index != _scp_base, "just checking"); | |
383 if (_items[index] != NULL) { | |
6197 | 384 FREE_C_HEAP_ARRAY(char, _items[index], mtInternal); |
0 | 385 _items[index] = NULL; |
386 } | |
387 } | |
388 | |
389 inline void SysClassPath::reset_path(const char* base) { | |
390 // Clear the prefix and suffix. | |
391 reset_item_at(_scp_prefix); | |
392 reset_item_at(_scp_suffix); | |
393 set_base(base); | |
394 } | |
395 | |
396 //------------------------------------------------------------------------------ | |
397 | |
398 void SysClassPath::expand_endorsed() { | |
399 assert(_items[_scp_endorsed] == NULL, "can only be called once."); | |
400 | |
401 const char* path = Arguments::get_property("java.endorsed.dirs"); | |
402 if (path == NULL) { | |
403 path = Arguments::get_endorsed_dir(); | |
404 assert(path != NULL, "no default for java.endorsed.dirs"); | |
405 } | |
406 | |
407 char* expanded_path = NULL; | |
408 const char separator = *os::path_separator(); | |
409 const char* const end = path + strlen(path); | |
410 while (path < end) { | |
411 const char* tmp_end = strchr(path, separator); | |
412 if (tmp_end == NULL) { | |
413 expanded_path = add_jars_to_path(expanded_path, path); | |
414 path = end; | |
415 } else { | |
6197 | 416 char* dirpath = NEW_C_HEAP_ARRAY(char, tmp_end - path + 1, mtInternal); |
0 | 417 memcpy(dirpath, path, tmp_end - path); |
418 dirpath[tmp_end - path] = '\0'; | |
419 expanded_path = add_jars_to_path(expanded_path, dirpath); | |
6197 | 420 FREE_C_HEAP_ARRAY(char, dirpath, mtInternal); |
0 | 421 path = tmp_end + 1; |
422 } | |
423 } | |
424 _items[_scp_endorsed] = expanded_path; | |
425 DEBUG_ONLY(_expansion_done = true;) | |
426 } | |
427 | |
428 // Combine the bootclasspath elements, some of which may be null, into a single | |
429 // c-heap-allocated string. | |
430 char* SysClassPath::combined_path() { | |
431 assert(_items[_scp_base] != NULL, "empty default sysclasspath"); | |
432 assert(_expansion_done, "must call expand_endorsed() first."); | |
433 | |
434 size_t lengths[_scp_nitems]; | |
435 size_t total_len = 0; | |
436 | |
437 const char separator = *os::path_separator(); | |
438 | |
439 // Get the lengths. | |
440 int i; | |
441 for (i = 0; i < _scp_nitems; ++i) { | |
442 if (_items[i] != NULL) { | |
443 lengths[i] = strlen(_items[i]); | |
444 // Include space for the separator char (or a NULL for the last item). | |
445 total_len += lengths[i] + 1; | |
446 } | |
447 } | |
448 assert(total_len > 0, "empty sysclasspath not allowed"); | |
449 | |
450 // Copy the _items to a single string. | |
6197 | 451 char* cp = NEW_C_HEAP_ARRAY(char, total_len, mtInternal); |
0 | 452 char* cp_tmp = cp; |
453 for (i = 0; i < _scp_nitems; ++i) { | |
454 if (_items[i] != NULL) { | |
455 memcpy(cp_tmp, _items[i], lengths[i]); | |
456 cp_tmp += lengths[i]; | |
457 *cp_tmp++ = separator; | |
458 } | |
459 } | |
460 *--cp_tmp = '\0'; // Replace the extra separator. | |
461 return cp; | |
462 } | |
463 | |
464 // Note: path must be c-heap-allocated (or NULL); it is freed if non-null. | |
465 char* | |
466 SysClassPath::add_to_path(const char* path, const char* str, bool prepend) { | |
467 char *cp; | |
468 | |
469 assert(str != NULL, "just checking"); | |
470 if (path == NULL) { | |
471 size_t len = strlen(str) + 1; | |
6197 | 472 cp = NEW_C_HEAP_ARRAY(char, len, mtInternal); |
0 | 473 memcpy(cp, str, len); // copy the trailing null |
474 } else { | |
475 const char separator = *os::path_separator(); | |
476 size_t old_len = strlen(path); | |
477 size_t str_len = strlen(str); | |
478 size_t len = old_len + str_len + 2; | |
479 | |
480 if (prepend) { | |
6197 | 481 cp = NEW_C_HEAP_ARRAY(char, len, mtInternal); |
0 | 482 char* cp_tmp = cp; |
483 memcpy(cp_tmp, str, str_len); | |
484 cp_tmp += str_len; | |
485 *cp_tmp = separator; | |
486 memcpy(++cp_tmp, path, old_len + 1); // copy the trailing null | |
6197 | 487 FREE_C_HEAP_ARRAY(char, path, mtInternal); |
0 | 488 } else { |
6197 | 489 cp = REALLOC_C_HEAP_ARRAY(char, path, len, mtInternal); |
0 | 490 char* cp_tmp = cp + old_len; |
491 *cp_tmp = separator; | |
492 memcpy(++cp_tmp, str, str_len + 1); // copy the trailing null | |
493 } | |
494 } | |
495 return cp; | |
496 } | |
497 | |
498 // Scan the directory and append any jar or zip files found to path. | |
499 // Note: path must be c-heap-allocated (or NULL); it is freed if non-null. | |
500 char* SysClassPath::add_jars_to_path(char* path, const char* directory) { | |
501 DIR* dir = os::opendir(directory); | |
502 if (dir == NULL) return path; | |
503 | |
504 char dir_sep[2] = { '\0', '\0' }; | |
505 size_t directory_len = strlen(directory); | |
506 const char fileSep = *os::file_separator(); | |
507 if (directory[directory_len - 1] != fileSep) dir_sep[0] = fileSep; | |
508 | |
509 /* Scan the directory for jars/zips, appending them to path. */ | |
510 struct dirent *entry; | |
6197 | 511 char *dbuf = NEW_C_HEAP_ARRAY(char, os::readdir_buf_size(directory), mtInternal); |
0 | 512 while ((entry = os::readdir(dir, (dirent *) dbuf)) != NULL) { |
513 const char* name = entry->d_name; | |
514 const char* ext = name + strlen(name) - 4; | |
515 bool isJarOrZip = ext > name && | |
516 (os::file_name_strcmp(ext, ".jar") == 0 || | |
517 os::file_name_strcmp(ext, ".zip") == 0); | |
518 if (isJarOrZip) { | |
6197 | 519 char* jarpath = NEW_C_HEAP_ARRAY(char, directory_len + 2 + strlen(name), mtInternal); |
0 | 520 sprintf(jarpath, "%s%s%s", directory, dir_sep, name); |
521 path = add_to_path(path, jarpath, false); | |
6197 | 522 FREE_C_HEAP_ARRAY(char, jarpath, mtInternal); |
0 | 523 } |
524 } | |
6197 | 525 FREE_C_HEAP_ARRAY(char, dbuf, mtInternal); |
0 | 526 os::closedir(dir); |
527 return path; | |
528 } | |
529 | |
530 // Parses a memory size specification string. | |
489
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531 static bool atomull(const char *s, julong* result) { |
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532 julong n = 0; |
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533 int args_read = sscanf(s, os::julong_format_specifier(), &n); |
0 | 534 if (args_read != 1) { |
535 return false; | |
536 } | |
537 while (*s != '\0' && isdigit(*s)) { | |
538 s++; | |
539 } | |
540 // 4705540: illegal if more characters are found after the first non-digit | |
541 if (strlen(s) > 1) { | |
542 return false; | |
543 } | |
544 switch (*s) { | |
545 case 'T': case 't': | |
546 *result = n * G * K; | |
489
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547 // Check for overflow. |
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548 if (*result/((julong)G * K) != n) return false; |
0 | 549 return true; |
550 case 'G': case 'g': | |
551 *result = n * G; | |
489
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552 if (*result/G != n) return false; |
0 | 553 return true; |
554 case 'M': case 'm': | |
555 *result = n * M; | |
489
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556 if (*result/M != n) return false; |
0 | 557 return true; |
558 case 'K': case 'k': | |
559 *result = n * K; | |
489
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560 if (*result/K != n) return false; |
0 | 561 return true; |
562 case '\0': | |
563 *result = n; | |
564 return true; | |
565 default: | |
566 return false; | |
567 } | |
568 } | |
569 | |
489
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570 Arguments::ArgsRange Arguments::check_memory_size(julong size, julong min_size) { |
0 | 571 if (size < min_size) return arg_too_small; |
572 // Check that size will fit in a size_t (only relevant on 32-bit) | |
489
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573 if (size > max_uintx) return arg_too_big; |
0 | 574 return arg_in_range; |
575 } | |
576 | |
577 // Describe an argument out of range error | |
578 void Arguments::describe_range_error(ArgsRange errcode) { | |
579 switch(errcode) { | |
580 case arg_too_big: | |
581 jio_fprintf(defaultStream::error_stream(), | |
582 "The specified size exceeds the maximum " | |
583 "representable size.\n"); | |
584 break; | |
585 case arg_too_small: | |
586 case arg_unreadable: | |
587 case arg_in_range: | |
588 // do nothing for now | |
589 break; | |
590 default: | |
591 ShouldNotReachHere(); | |
592 } | |
593 } | |
594 | |
595 static bool set_bool_flag(char* name, bool value, FlagValueOrigin origin) { | |
596 return CommandLineFlags::boolAtPut(name, &value, origin); | |
597 } | |
598 | |
599 static bool set_fp_numeric_flag(char* name, char* value, FlagValueOrigin origin) { | |
600 double v; | |
601 if (sscanf(value, "%lf", &v) != 1) { | |
602 return false; | |
603 } | |
604 | |
605 if (CommandLineFlags::doubleAtPut(name, &v, origin)) { | |
606 return true; | |
607 } | |
608 return false; | |
609 } | |
610 | |
611 static bool set_numeric_flag(char* name, char* value, FlagValueOrigin origin) { | |
489
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612 julong v; |
0 | 613 intx intx_v; |
614 bool is_neg = false; | |
489
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615 // Check the sign first since atomull() parses only unsigned values. |
0 | 616 if (*value == '-') { |
617 if (!CommandLineFlags::intxAt(name, &intx_v)) { | |
618 return false; | |
619 } | |
620 value++; | |
621 is_neg = true; | |
622 } | |
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623 if (!atomull(value, &v)) { |
0 | 624 return false; |
625 } | |
626 intx_v = (intx) v; | |
627 if (is_neg) { | |
628 intx_v = -intx_v; | |
629 } | |
630 if (CommandLineFlags::intxAtPut(name, &intx_v, origin)) { | |
631 return true; | |
632 } | |
633 uintx uintx_v = (uintx) v; | |
634 if (!is_neg && CommandLineFlags::uintxAtPut(name, &uintx_v, origin)) { | |
635 return true; | |
636 } | |
1064 | 637 uint64_t uint64_t_v = (uint64_t) v; |
638 if (!is_neg && CommandLineFlags::uint64_tAtPut(name, &uint64_t_v, origin)) { | |
639 return true; | |
640 } | |
0 | 641 return false; |
642 } | |
643 | |
644 static bool set_string_flag(char* name, const char* value, FlagValueOrigin origin) { | |
645 if (!CommandLineFlags::ccstrAtPut(name, &value, origin)) return false; | |
646 // Contract: CommandLineFlags always returns a pointer that needs freeing. | |
6197 | 647 FREE_C_HEAP_ARRAY(char, value, mtInternal); |
0 | 648 return true; |
649 } | |
650 | |
651 static bool append_to_string_flag(char* name, const char* new_value, FlagValueOrigin origin) { | |
652 const char* old_value = ""; | |
653 if (!CommandLineFlags::ccstrAt(name, &old_value)) return false; | |
654 size_t old_len = old_value != NULL ? strlen(old_value) : 0; | |
655 size_t new_len = strlen(new_value); | |
656 const char* value; | |
657 char* free_this_too = NULL; | |
658 if (old_len == 0) { | |
659 value = new_value; | |
660 } else if (new_len == 0) { | |
661 value = old_value; | |
662 } else { | |
6197 | 663 char* buf = NEW_C_HEAP_ARRAY(char, old_len + 1 + new_len + 1, mtInternal); |
0 | 664 // each new setting adds another LINE to the switch: |
665 sprintf(buf, "%s\n%s", old_value, new_value); | |
666 value = buf; | |
667 free_this_too = buf; | |
668 } | |
669 (void) CommandLineFlags::ccstrAtPut(name, &value, origin); | |
670 // CommandLineFlags always returns a pointer that needs freeing. | |
6197 | 671 FREE_C_HEAP_ARRAY(char, value, mtInternal); |
0 | 672 if (free_this_too != NULL) { |
673 // CommandLineFlags made its own copy, so I must delete my own temp. buffer. | |
6197 | 674 FREE_C_HEAP_ARRAY(char, free_this_too, mtInternal); |
0 | 675 } |
676 return true; | |
677 } | |
678 | |
679 bool Arguments::parse_argument(const char* arg, FlagValueOrigin origin) { | |
680 | |
681 // range of acceptable characters spelled out for portability reasons | |
682 #define NAME_RANGE "[abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789_]" | |
683 #define BUFLEN 255 | |
684 char name[BUFLEN+1]; | |
685 char dummy; | |
686 | |
687 if (sscanf(arg, "-%" XSTR(BUFLEN) NAME_RANGE "%c", name, &dummy) == 1) { | |
688 return set_bool_flag(name, false, origin); | |
689 } | |
690 if (sscanf(arg, "+%" XSTR(BUFLEN) NAME_RANGE "%c", name, &dummy) == 1) { | |
691 return set_bool_flag(name, true, origin); | |
692 } | |
693 | |
694 char punct; | |
695 if (sscanf(arg, "%" XSTR(BUFLEN) NAME_RANGE "%c", name, &punct) == 2 && punct == '=') { | |
696 const char* value = strchr(arg, '=') + 1; | |
697 Flag* flag = Flag::find_flag(name, strlen(name)); | |
698 if (flag != NULL && flag->is_ccstr()) { | |
699 if (flag->ccstr_accumulates()) { | |
700 return append_to_string_flag(name, value, origin); | |
701 } else { | |
702 if (value[0] == '\0') { | |
703 value = NULL; | |
704 } | |
705 return set_string_flag(name, value, origin); | |
706 } | |
707 } | |
708 } | |
709 | |
710 if (sscanf(arg, "%" XSTR(BUFLEN) NAME_RANGE ":%c", name, &punct) == 2 && punct == '=') { | |
711 const char* value = strchr(arg, '=') + 1; | |
712 // -XX:Foo:=xxx will reset the string flag to the given value. | |
713 if (value[0] == '\0') { | |
714 value = NULL; | |
715 } | |
716 return set_string_flag(name, value, origin); | |
717 } | |
718 | |
719 #define SIGNED_FP_NUMBER_RANGE "[-0123456789.]" | |
720 #define SIGNED_NUMBER_RANGE "[-0123456789]" | |
721 #define NUMBER_RANGE "[0123456789]" | |
722 char value[BUFLEN + 1]; | |
723 char value2[BUFLEN + 1]; | |
724 if (sscanf(arg, "%" XSTR(BUFLEN) NAME_RANGE "=" "%" XSTR(BUFLEN) SIGNED_NUMBER_RANGE "." "%" XSTR(BUFLEN) NUMBER_RANGE "%c", name, value, value2, &dummy) == 3) { | |
725 // Looks like a floating-point number -- try again with more lenient format string | |
726 if (sscanf(arg, "%" XSTR(BUFLEN) NAME_RANGE "=" "%" XSTR(BUFLEN) SIGNED_FP_NUMBER_RANGE "%c", name, value, &dummy) == 2) { | |
727 return set_fp_numeric_flag(name, value, origin); | |
728 } | |
729 } | |
730 | |
731 #define VALUE_RANGE "[-kmgtKMGT0123456789]" | |
732 if (sscanf(arg, "%" XSTR(BUFLEN) NAME_RANGE "=" "%" XSTR(BUFLEN) VALUE_RANGE "%c", name, value, &dummy) == 2) { | |
733 return set_numeric_flag(name, value, origin); | |
734 } | |
735 | |
736 return false; | |
737 } | |
738 | |
739 void Arguments::add_string(char*** bldarray, int* count, const char* arg) { | |
740 assert(bldarray != NULL, "illegal argument"); | |
741 | |
742 if (arg == NULL) { | |
743 return; | |
744 } | |
745 | |
746 int index = *count; | |
747 | |
748 // expand the array and add arg to the last element | |
749 (*count)++; | |
750 if (*bldarray == NULL) { | |
6197 | 751 *bldarray = NEW_C_HEAP_ARRAY(char*, *count, mtInternal); |
0 | 752 } else { |
6197 | 753 *bldarray = REALLOC_C_HEAP_ARRAY(char*, *bldarray, *count, mtInternal); |
0 | 754 } |
755 (*bldarray)[index] = strdup(arg); | |
756 } | |
757 | |
758 void Arguments::build_jvm_args(const char* arg) { | |
759 add_string(&_jvm_args_array, &_num_jvm_args, arg); | |
760 } | |
761 | |
762 void Arguments::build_jvm_flags(const char* arg) { | |
763 add_string(&_jvm_flags_array, &_num_jvm_flags, arg); | |
764 } | |
765 | |
766 // utility function to return a string that concatenates all | |
767 // strings in a given char** array | |
768 const char* Arguments::build_resource_string(char** args, int count) { | |
769 if (args == NULL || count == 0) { | |
770 return NULL; | |
771 } | |
772 size_t length = strlen(args[0]) + 1; // add 1 for the null terminator | |
773 for (int i = 1; i < count; i++) { | |
774 length += strlen(args[i]) + 1; // add 1 for a space | |
775 } | |
776 char* s = NEW_RESOURCE_ARRAY(char, length); | |
777 strcpy(s, args[0]); | |
778 for (int j = 1; j < count; j++) { | |
779 strcat(s, " "); | |
780 strcat(s, args[j]); | |
781 } | |
782 return (const char*) s; | |
783 } | |
784 | |
785 void Arguments::print_on(outputStream* st) { | |
786 st->print_cr("VM Arguments:"); | |
787 if (num_jvm_flags() > 0) { | |
788 st->print("jvm_flags: "); print_jvm_flags_on(st); | |
789 } | |
790 if (num_jvm_args() > 0) { | |
791 st->print("jvm_args: "); print_jvm_args_on(st); | |
792 } | |
793 st->print_cr("java_command: %s", java_command() ? java_command() : "<unknown>"); | |
794 st->print_cr("Launcher Type: %s", _sun_java_launcher); | |
795 } | |
796 | |
797 void Arguments::print_jvm_flags_on(outputStream* st) { | |
798 if (_num_jvm_flags > 0) { | |
799 for (int i=0; i < _num_jvm_flags; i++) { | |
800 st->print("%s ", _jvm_flags_array[i]); | |
801 } | |
802 st->print_cr(""); | |
803 } | |
804 } | |
805 | |
806 void Arguments::print_jvm_args_on(outputStream* st) { | |
807 if (_num_jvm_args > 0) { | |
808 for (int i=0; i < _num_jvm_args; i++) { | |
809 st->print("%s ", _jvm_args_array[i]); | |
810 } | |
811 st->print_cr(""); | |
812 } | |
813 } | |
814 | |
242 | 815 bool Arguments::process_argument(const char* arg, |
816 jboolean ignore_unrecognized, FlagValueOrigin origin) { | |
817 | |
818 JDK_Version since = JDK_Version(); | |
0 | 819 |
3250 | 820 if (parse_argument(arg, origin) || ignore_unrecognized) { |
821 return true; | |
0 | 822 } |
3250 | 823 |
824 const char * const argname = *arg == '+' || *arg == '-' ? arg + 1 : arg; | |
825 if (is_newly_obsolete(arg, &since)) { | |
826 char version[256]; | |
827 since.to_string(version, sizeof(version)); | |
828 warning("ignoring option %s; support was removed in %s", argname, version); | |
829 return true; | |
830 } | |
831 | |
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832 // For locked flags, report a custom error message if available. |
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833 // Otherwise, report the standard unrecognized VM option. |
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834 |
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835 Flag* locked_flag = Flag::find_flag((char*)argname, strlen(argname), true); |
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836 if (locked_flag != NULL) { |
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837 char locked_message_buf[BUFLEN]; |
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838 locked_flag->get_locked_message(locked_message_buf, BUFLEN); |
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839 if (strlen(locked_message_buf) == 0) { |
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840 jio_fprintf(defaultStream::error_stream(), |
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841 "Unrecognized VM option '%s'\n", argname); |
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842 } else { |
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843 jio_fprintf(defaultStream::error_stream(), "%s", locked_message_buf); |
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844 } |
6017 | 845 } else { |
846 jio_fprintf(defaultStream::error_stream(), | |
847 "Unrecognized VM option '%s'\n", argname); | |
5947
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848 } |
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849 |
3250 | 850 // allow for commandline "commenting out" options like -XX:#+Verbose |
851 return arg[0] == '#'; | |
0 | 852 } |
853 | |
854 bool Arguments::process_settings_file(const char* file_name, bool should_exist, jboolean ignore_unrecognized) { | |
855 FILE* stream = fopen(file_name, "rb"); | |
856 if (stream == NULL) { | |
857 if (should_exist) { | |
858 jio_fprintf(defaultStream::error_stream(), | |
859 "Could not open settings file %s\n", file_name); | |
860 return false; | |
861 } else { | |
862 return true; | |
863 } | |
864 } | |
865 | |
866 char token[1024]; | |
867 int pos = 0; | |
868 | |
869 bool in_white_space = true; | |
870 bool in_comment = false; | |
871 bool in_quote = false; | |
872 char quote_c = 0; | |
873 bool result = true; | |
874 | |
875 int c = getc(stream); | |
6901 | 876 while(c != EOF && pos < (int)(sizeof(token)-1)) { |
0 | 877 if (in_white_space) { |
878 if (in_comment) { | |
879 if (c == '\n') in_comment = false; | |
880 } else { | |
881 if (c == '#') in_comment = true; | |
882 else if (!isspace(c)) { | |
883 in_white_space = false; | |
884 token[pos++] = c; | |
885 } | |
886 } | |
887 } else { | |
888 if (c == '\n' || (!in_quote && isspace(c))) { | |
889 // token ends at newline, or at unquoted whitespace | |
890 // this allows a way to include spaces in string-valued options | |
891 token[pos] = '\0'; | |
892 logOption(token); | |
893 result &= process_argument(token, ignore_unrecognized, CONFIG_FILE); | |
894 build_jvm_flags(token); | |
895 pos = 0; | |
896 in_white_space = true; | |
897 in_quote = false; | |
898 } else if (!in_quote && (c == '\'' || c == '"')) { | |
899 in_quote = true; | |
900 quote_c = c; | |
901 } else if (in_quote && (c == quote_c)) { | |
902 in_quote = false; | |
903 } else { | |
904 token[pos++] = c; | |
905 } | |
906 } | |
907 c = getc(stream); | |
908 } | |
909 if (pos > 0) { | |
910 token[pos] = '\0'; | |
911 result &= process_argument(token, ignore_unrecognized, CONFIG_FILE); | |
912 build_jvm_flags(token); | |
913 } | |
914 fclose(stream); | |
915 return result; | |
916 } | |
917 | |
918 //============================================================================================================= | |
919 // Parsing of properties (-D) | |
920 | |
921 const char* Arguments::get_property(const char* key) { | |
922 return PropertyList_get_value(system_properties(), key); | |
923 } | |
924 | |
925 bool Arguments::add_property(const char* prop) { | |
926 const char* eq = strchr(prop, '='); | |
927 char* key; | |
928 // ns must be static--its address may be stored in a SystemProperty object. | |
929 const static char ns[1] = {0}; | |
930 char* value = (char *)ns; | |
931 | |
932 size_t key_len = (eq == NULL) ? strlen(prop) : (eq - prop); | |
6197 | 933 key = AllocateHeap(key_len + 1, mtInternal); |
0 | 934 strncpy(key, prop, key_len); |
935 key[key_len] = '\0'; | |
936 | |
937 if (eq != NULL) { | |
938 size_t value_len = strlen(prop) - key_len - 1; | |
6197 | 939 value = AllocateHeap(value_len + 1, mtInternal); |
0 | 940 strncpy(value, &prop[key_len + 1], value_len + 1); |
941 } | |
942 | |
943 if (strcmp(key, "java.compiler") == 0) { | |
944 process_java_compiler_argument(value); | |
945 FreeHeap(key); | |
946 if (eq != NULL) { | |
947 FreeHeap(value); | |
948 } | |
949 return true; | |
691 | 950 } else if (strcmp(key, "sun.java.command") == 0) { |
0 | 951 _java_command = value; |
952 | |
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953 // Record value in Arguments, but let it get passed to Java. |
691 | 954 } else if (strcmp(key, "sun.java.launcher.pid") == 0) { |
0 | 955 // launcher.pid property is private and is processed |
956 // in process_sun_java_launcher_properties(); | |
957 // the sun.java.launcher property is passed on to the java application | |
958 FreeHeap(key); | |
959 if (eq != NULL) { | |
960 FreeHeap(value); | |
961 } | |
962 return true; | |
691 | 963 } else if (strcmp(key, "java.vendor.url.bug") == 0) { |
0 | 964 // save it in _java_vendor_url_bug, so JVM fatal error handler can access |
965 // its value without going through the property list or making a Java call. | |
966 _java_vendor_url_bug = value; | |
691 | 967 } else if (strcmp(key, "sun.boot.library.path") == 0) { |
968 PropertyList_unique_add(&_system_properties, key, value, true); | |
969 return true; | |
0 | 970 } |
971 // Create new property and add at the end of the list | |
972 PropertyList_unique_add(&_system_properties, key, value); | |
973 return true; | |
974 } | |
975 | |
976 //=========================================================================================================== | |
977 // Setting int/mixed/comp mode flags | |
978 | |
979 void Arguments::set_mode_flags(Mode mode) { | |
980 // Set up default values for all flags. | |
981 // If you add a flag to any of the branches below, | |
982 // add a default value for it here. | |
983 set_java_compiler(false); | |
984 _mode = mode; | |
985 | |
986 // Ensure Agent_OnLoad has the correct initial values. | |
987 // This may not be the final mode; mode may change later in onload phase. | |
988 PropertyList_unique_add(&_system_properties, "java.vm.info", | |
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989 (char*)VM_Version::vm_info_string(), false); |
0 | 990 |
991 UseInterpreter = true; | |
992 UseCompiler = true; | |
993 UseLoopCounter = true; | |
994 | |
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995 #ifndef ZERO |
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996 // Turn these off for mixed and comp. Leave them on for Zero. |
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997 if (FLAG_IS_DEFAULT(UseFastAccessorMethods)) { |
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998 UseFastAccessorMethods = (mode == _int); |
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999 } |
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1000 if (FLAG_IS_DEFAULT(UseFastEmptyMethods)) { |
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1001 UseFastEmptyMethods = (mode == _int); |
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1002 } |
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1003 #endif |
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1004 |
0 | 1005 // Default values may be platform/compiler dependent - |
1006 // use the saved values | |
1007 ClipInlining = Arguments::_ClipInlining; | |
1008 AlwaysCompileLoopMethods = Arguments::_AlwaysCompileLoopMethods; | |
1009 UseOnStackReplacement = Arguments::_UseOnStackReplacement; | |
1010 BackgroundCompilation = Arguments::_BackgroundCompilation; | |
1011 | |
1012 // Change from defaults based on mode | |
1013 switch (mode) { | |
1014 default: | |
1015 ShouldNotReachHere(); | |
1016 break; | |
1017 case _int: | |
1018 UseCompiler = false; | |
1019 UseLoopCounter = false; | |
1020 AlwaysCompileLoopMethods = false; | |
1021 UseOnStackReplacement = false; | |
1022 break; | |
1023 case _mixed: | |
1024 // same as default | |
1025 break; | |
1026 case _comp: | |
1027 UseInterpreter = false; | |
1028 BackgroundCompilation = false; | |
1029 ClipInlining = false; | |
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1030 // Be much more aggressive in tiered mode with -Xcomp and exercise C2 more. |
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1031 // We will first compile a level 3 version (C1 with full profiling), then do one invocation of it and |
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1032 // compile a level 4 (C2) and then continue executing it. |
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1033 if (TieredCompilation) { |
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1034 Tier3InvokeNotifyFreqLog = 0; |
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1035 Tier4InvocationThreshold = 0; |
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1036 } |
0 | 1037 break; |
1038 } | |
1039 } | |
1040 | |
1041 // Conflict: required to use shared spaces (-Xshare:on), but | |
1042 // incompatible command line options were chosen. | |
1043 | |
1044 static void no_shared_spaces() { | |
1045 if (RequireSharedSpaces) { | |
1046 jio_fprintf(defaultStream::error_stream(), | |
1047 "Class data sharing is inconsistent with other specified options.\n"); | |
1048 vm_exit_during_initialization("Unable to use shared archive.", NULL); | |
1049 } else { | |
1050 FLAG_SET_DEFAULT(UseSharedSpaces, false); | |
1051 } | |
1052 } | |
1053 | |
1783 | 1054 void Arguments::set_tiered_flags() { |
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1055 // With tiered, set default policy to AdvancedThresholdPolicy, which is 3. |
1783 | 1056 if (FLAG_IS_DEFAULT(CompilationPolicyChoice)) { |
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1057 FLAG_SET_DEFAULT(CompilationPolicyChoice, 3); |
1783 | 1058 } |
1059 if (CompilationPolicyChoice < 2) { | |
1060 vm_exit_during_initialization( | |
1061 "Incompatible compilation policy selected", NULL); | |
1062 } | |
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1063 // Increase the code cache size - tiered compiles a lot more. |
1783 | 1064 if (FLAG_IS_DEFAULT(ReservedCodeCacheSize)) { |
1065 FLAG_SET_DEFAULT(ReservedCodeCacheSize, ReservedCodeCacheSize * 2); | |
1066 } | |
1067 } | |
1068 | |
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1069 #ifndef KERNEL |
4838 | 1070 static void disable_adaptive_size_policy(const char* collector_name) { |
1071 if (UseAdaptiveSizePolicy) { | |
1072 if (FLAG_IS_CMDLINE(UseAdaptiveSizePolicy)) { | |
1073 warning("disabling UseAdaptiveSizePolicy; it is incompatible with %s.", | |
1074 collector_name); | |
1075 } | |
1076 FLAG_SET_DEFAULT(UseAdaptiveSizePolicy, false); | |
1077 } | |
1078 } | |
1079 | |
0 | 1080 // If the user has chosen ParallelGCThreads > 0, we set UseParNewGC |
1081 // if it's not explictly set or unset. If the user has chosen | |
1082 // UseParNewGC and not explicitly set ParallelGCThreads we | |
1083 // set it, unless this is a single cpu machine. | |
1084 void Arguments::set_parnew_gc_flags() { | |
1064 | 1085 assert(!UseSerialGC && !UseParallelOldGC && !UseParallelGC && !UseG1GC, |
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1086 "control point invariant"); |
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1087 assert(UseParNewGC, "Error"); |
0 | 1088 |
4838 | 1089 // Turn off AdaptiveSizePolicy for parnew until it is complete. |
1090 disable_adaptive_size_policy("UseParNewGC"); | |
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1091 |
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1092 if (ParallelGCThreads == 0) { |
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1093 FLAG_SET_DEFAULT(ParallelGCThreads, |
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1094 Abstract_VM_Version::parallel_worker_threads()); |
1064 | 1095 if (ParallelGCThreads == 1) { |
0 | 1096 FLAG_SET_DEFAULT(UseParNewGC, false); |
1064 | 1097 FLAG_SET_DEFAULT(ParallelGCThreads, 0); |
0 | 1098 } |
1099 } | |
1064 | 1100 if (UseParNewGC) { |
695 | 1101 // By default YoungPLABSize and OldPLABSize are set to 4096 and 1024 respectively, |
0 | 1102 // these settings are default for Parallel Scavenger. For ParNew+Tenured configuration |
1103 // we set them to 1024 and 1024. | |
1104 // See CR 6362902. | |
1105 if (FLAG_IS_DEFAULT(YoungPLABSize)) { | |
1106 FLAG_SET_DEFAULT(YoungPLABSize, (intx)1024); | |
1107 } | |
1108 if (FLAG_IS_DEFAULT(OldPLABSize)) { | |
1109 FLAG_SET_DEFAULT(OldPLABSize, (intx)1024); | |
1110 } | |
1111 | |
1064 | 1112 // AlwaysTenure flag should make ParNew promote all at first collection. |
0 | 1113 // See CR 6362902. |
1114 if (AlwaysTenure) { | |
6818 | 1115 FLAG_SET_CMDLINE(uintx, MaxTenuringThreshold, 0); |
0 | 1116 } |
695 | 1117 // When using compressed oops, we use local overflow stacks, |
1118 // rather than using a global overflow list chained through | |
1119 // the klass word of the object's pre-image. | |
1120 if (UseCompressedOops && !ParGCUseLocalOverflow) { | |
1121 if (!FLAG_IS_DEFAULT(ParGCUseLocalOverflow)) { | |
1122 warning("Forcing +ParGCUseLocalOverflow: needed if using compressed references"); | |
1123 } | |
1124 FLAG_SET_DEFAULT(ParGCUseLocalOverflow, true); | |
1125 } | |
1126 assert(ParGCUseLocalOverflow || !UseCompressedOops, "Error"); | |
0 | 1127 } |
1128 } | |
1129 | |
1130 // Adjust some sizes to suit CMS and/or ParNew needs; these work well on | |
1131 // sparc/solaris for certain applications, but would gain from | |
1132 // further optimization and tuning efforts, and would almost | |
1133 // certainly gain from analysis of platform and environment. | |
1134 void Arguments::set_cms_and_parnew_gc_flags() { | |
1064 | 1135 assert(!UseSerialGC && !UseParallelOldGC && !UseParallelGC, "Error"); |
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1136 assert(UseConcMarkSweepGC, "CMS is expected to be on here"); |
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1137 |
0 | 1138 // If we are using CMS, we prefer to UseParNewGC, |
1139 // unless explicitly forbidden. | |
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1140 if (FLAG_IS_DEFAULT(UseParNewGC)) { |
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1141 FLAG_SET_ERGO(bool, UseParNewGC, true); |
0 | 1142 } |
1143 | |
4838 | 1144 // Turn off AdaptiveSizePolicy for CMS until it is complete. |
1145 disable_adaptive_size_policy("UseConcMarkSweepGC"); | |
0 | 1146 |
1147 // In either case, adjust ParallelGCThreads and/or UseParNewGC | |
1148 // as needed. | |
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1149 if (UseParNewGC) { |
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1150 set_parnew_gc_flags(); |
0 | 1151 } |
1152 | |
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1153 // MaxHeapSize is aligned down in collectorPolicy |
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1154 size_t max_heap = align_size_down(MaxHeapSize, |
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1155 CardTableRS::ct_max_alignment_constraint()); |
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1156 |
0 | 1157 // Now make adjustments for CMS |
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1158 intx tenuring_default = (intx)6; |
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1159 size_t young_gen_per_worker = CMSYoungGenPerWorker; |
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1160 |
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1161 // Preferred young gen size for "short" pauses: |
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1162 // upper bound depends on # of threads and NewRatio. |
0 | 1163 const uintx parallel_gc_threads = |
1164 (ParallelGCThreads == 0 ? 1 : ParallelGCThreads); | |
1165 const size_t preferred_max_new_size_unaligned = | |
2368
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1166 MIN2(max_heap/(NewRatio+1), ScaleForWordSize(young_gen_per_worker * parallel_gc_threads)); |
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1167 size_t preferred_max_new_size = |
0 | 1168 align_size_up(preferred_max_new_size_unaligned, os::vm_page_size()); |
1169 | |
1170 // Unless explicitly requested otherwise, size young gen | |
2368
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1171 // for "short" pauses ~ CMSYoungGenPerWorker*ParallelGCThreads |
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1172 |
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1173 // If either MaxNewSize or NewRatio is set on the command line, |
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1174 // assume the user is trying to set the size of the young gen. |
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1175 if (FLAG_IS_DEFAULT(MaxNewSize) && FLAG_IS_DEFAULT(NewRatio)) { |
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1176 |
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1177 // Set MaxNewSize to our calculated preferred_max_new_size unless |
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1178 // NewSize was set on the command line and it is larger than |
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1179 // preferred_max_new_size. |
0 | 1180 if (!FLAG_IS_DEFAULT(NewSize)) { // NewSize explicitly set at command-line |
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1181 FLAG_SET_ERGO(uintx, MaxNewSize, MAX2(NewSize, preferred_max_new_size)); |
0 | 1182 } else { |
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1183 FLAG_SET_ERGO(uintx, MaxNewSize, preferred_max_new_size); |
0 | 1184 } |
1064 | 1185 if (PrintGCDetails && Verbose) { |
13
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1186 // Too early to use gclog_or_tty |
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1187 tty->print_cr("CMS ergo set MaxNewSize: " SIZE_FORMAT, MaxNewSize); |
886
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1188 } |
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1189 |
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1190 // Code along this path potentially sets NewSize and OldSize |
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1191 |
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1192 assert(max_heap >= InitialHeapSize, "Error"); |
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1193 assert(max_heap >= NewSize, "Error"); |
0 | 1194 |
1064 | 1195 if (PrintGCDetails && Verbose) { |
13
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1196 // Too early to use gclog_or_tty |
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1197 tty->print_cr("CMS set min_heap_size: " SIZE_FORMAT |
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1198 " initial_heap_size: " SIZE_FORMAT |
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1199 " max_heap: " SIZE_FORMAT, |
1064 | 1200 min_heap_size(), InitialHeapSize, max_heap); |
13
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1201 } |
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1202 size_t min_new = preferred_max_new_size; |
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1203 if (FLAG_IS_CMDLINE(NewSize)) { |
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1204 min_new = NewSize; |
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1205 } |
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1206 if (max_heap > min_new && min_heap_size() > min_new) { |
0 | 1207 // Unless explicitly requested otherwise, make young gen |
1208 // at least min_new, and at most preferred_max_new_size. | |
1209 if (FLAG_IS_DEFAULT(NewSize)) { | |
13
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1210 FLAG_SET_ERGO(uintx, NewSize, MAX2(NewSize, min_new)); |
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1211 FLAG_SET_ERGO(uintx, NewSize, MIN2(preferred_max_new_size, NewSize)); |
1064 | 1212 if (PrintGCDetails && Verbose) { |
13
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1213 // Too early to use gclog_or_tty |
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1214 tty->print_cr("CMS ergo set NewSize: " SIZE_FORMAT, NewSize); |
13
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1215 } |
0 | 1216 } |
1217 // Unless explicitly requested otherwise, size old gen | |
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1218 // so it's NewRatio x of NewSize. |
0 | 1219 if (FLAG_IS_DEFAULT(OldSize)) { |
1220 if (max_heap > NewSize) { | |
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1221 FLAG_SET_ERGO(uintx, OldSize, MIN2(NewRatio*NewSize, max_heap - NewSize)); |
1064 | 1222 if (PrintGCDetails && Verbose) { |
13
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1223 // Too early to use gclog_or_tty |
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1224 tty->print_cr("CMS ergo set OldSize: " SIZE_FORMAT, OldSize); |
13
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1225 } |
0 | 1226 } |
1227 } | |
1228 } | |
1229 } | |
1230 // Unless explicitly requested otherwise, definitely | |
1231 // promote all objects surviving "tenuring_default" scavenges. | |
1232 if (FLAG_IS_DEFAULT(MaxTenuringThreshold) && | |
1233 FLAG_IS_DEFAULT(SurvivorRatio)) { | |
6818 | 1234 FLAG_SET_ERGO(uintx, MaxTenuringThreshold, tenuring_default); |
0 | 1235 } |
1236 // If we decided above (or user explicitly requested) | |
1237 // `promote all' (via MaxTenuringThreshold := 0), | |
1238 // prefer minuscule survivor spaces so as not to waste | |
1239 // space for (non-existent) survivors | |
1240 if (FLAG_IS_DEFAULT(SurvivorRatio) && MaxTenuringThreshold == 0) { | |
13
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1241 FLAG_SET_ERGO(intx, SurvivorRatio, MAX2((intx)1024, SurvivorRatio)); |
0 | 1242 } |
1243 // If OldPLABSize is set and CMSParPromoteBlocksToClaim is not, | |
1244 // set CMSParPromoteBlocksToClaim equal to OldPLABSize. | |
1245 // This is done in order to make ParNew+CMS configuration to work | |
1246 // with YoungPLABSize and OldPLABSize options. | |
1247 // See CR 6362902. | |
1248 if (!FLAG_IS_DEFAULT(OldPLABSize)) { | |
1249 if (FLAG_IS_DEFAULT(CMSParPromoteBlocksToClaim)) { | |
13
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1250 // OldPLABSize is not the default value but CMSParPromoteBlocksToClaim |
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1251 // is. In this situtation let CMSParPromoteBlocksToClaim follow |
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1252 // the value (either from the command line or ergonomics) of |
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1253 // OldPLABSize. Following OldPLABSize is an ergonomics decision. |
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1254 FLAG_SET_ERGO(uintx, CMSParPromoteBlocksToClaim, OldPLABSize); |
1145
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1255 } else { |
0 | 1256 // OldPLABSize and CMSParPromoteBlocksToClaim are both set. |
1257 // CMSParPromoteBlocksToClaim is a collector-specific flag, so | |
1258 // we'll let it to take precedence. | |
1259 jio_fprintf(defaultStream::error_stream(), | |
886
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1260 "Both OldPLABSize and CMSParPromoteBlocksToClaim" |
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1261 " options are specified for the CMS collector." |
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1262 " CMSParPromoteBlocksToClaim will take precedence.\n"); |
0 | 1263 } |
1264 } | |
1145
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1265 if (!FLAG_IS_DEFAULT(ResizeOldPLAB) && !ResizeOldPLAB) { |
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1266 // OldPLAB sizing manually turned off: Use a larger default setting, |
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1267 // unless it was manually specified. This is because a too-low value |
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1268 // will slow down scavenges. |
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1269 if (FLAG_IS_DEFAULT(CMSParPromoteBlocksToClaim)) { |
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1270 FLAG_SET_ERGO(uintx, CMSParPromoteBlocksToClaim, 50); // default value before 6631166 |
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1271 } |
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1272 } |
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1273 // Overwrite OldPLABSize which is the variable we will internally use everywhere. |
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1274 FLAG_SET_ERGO(uintx, OldPLABSize, CMSParPromoteBlocksToClaim); |
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1275 // If either of the static initialization defaults have changed, note this |
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1276 // modification. |
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1277 if (!FLAG_IS_DEFAULT(CMSParPromoteBlocksToClaim) || !FLAG_IS_DEFAULT(OldPLABWeight)) { |
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1278 CFLS_LAB::modify_initialization(OldPLABSize, OldPLABWeight); |
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1279 } |
1284 | 1280 if (PrintGCDetails && Verbose) { |
1281 tty->print_cr("MarkStackSize: %uk MarkStackSizeMax: %uk", | |
1282 MarkStackSize / K, MarkStackSizeMax / K); | |
1283 tty->print_cr("ConcGCThreads: %u", ConcGCThreads); | |
1284 } | |
0 | 1285 } |
1145
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1286 #endif // KERNEL |
0 | 1287 |
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1288 void set_object_alignment() { |
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1289 // Object alignment. |
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1290 assert(is_power_of_2(ObjectAlignmentInBytes), "ObjectAlignmentInBytes must be power of 2"); |
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1291 MinObjAlignmentInBytes = ObjectAlignmentInBytes; |
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1292 assert(MinObjAlignmentInBytes >= HeapWordsPerLong * HeapWordSize, "ObjectAlignmentInBytes value is too small"); |
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1293 MinObjAlignment = MinObjAlignmentInBytes / HeapWordSize; |
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1294 assert(MinObjAlignmentInBytes == MinObjAlignment * HeapWordSize, "ObjectAlignmentInBytes value is incorrect"); |
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1295 MinObjAlignmentInBytesMask = MinObjAlignmentInBytes - 1; |
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1296 |
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1297 LogMinObjAlignmentInBytes = exact_log2(ObjectAlignmentInBytes); |
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1298 LogMinObjAlignment = LogMinObjAlignmentInBytes - LogHeapWordSize; |
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1299 |
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1300 // Oop encoding heap max |
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1301 OopEncodingHeapMax = (uint64_t(max_juint) + 1) << LogMinObjAlignmentInBytes; |
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1302 |
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1303 #ifndef KERNEL |
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1304 // Set CMS global values |
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1305 CompactibleFreeListSpace::set_cms_values(); |
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1306 #endif // KERNEL |
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1307 } |
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1308 |
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1309 bool verify_object_alignment() { |
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1310 // Object alignment. |
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1311 if (!is_power_of_2(ObjectAlignmentInBytes)) { |
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1312 jio_fprintf(defaultStream::error_stream(), |
1829
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1313 "error: ObjectAlignmentInBytes=%d must be power of 2\n", |
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1314 (int)ObjectAlignmentInBytes); |
1571
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1315 return false; |
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1316 } |
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1317 if ((int)ObjectAlignmentInBytes < BytesPerLong) { |
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1318 jio_fprintf(defaultStream::error_stream(), |
1829
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1319 "error: ObjectAlignmentInBytes=%d must be greater or equal %d\n", |
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1320 (int)ObjectAlignmentInBytes, BytesPerLong); |
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1321 return false; |
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1322 } |
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1323 // It does not make sense to have big object alignment |
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1324 // since a space lost due to alignment will be greater |
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1325 // then a saved space from compressed oops. |
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1326 if ((int)ObjectAlignmentInBytes > 256) { |
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1327 jio_fprintf(defaultStream::error_stream(), |
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1328 "error: ObjectAlignmentInBytes=%d must not be greater then 256\n", |
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1329 (int)ObjectAlignmentInBytes); |
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1330 return false; |
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1331 } |
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1332 // In case page size is very small. |
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1333 if ((int)ObjectAlignmentInBytes >= os::vm_page_size()) { |
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1334 jio_fprintf(defaultStream::error_stream(), |
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1335 "error: ObjectAlignmentInBytes=%d must be less then page size %d\n", |
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1336 (int)ObjectAlignmentInBytes, os::vm_page_size()); |
1571
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1337 return false; |
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1338 } |
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1339 return true; |
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1340 } |
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1341 |
135
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1342 inline uintx max_heap_for_compressed_oops() { |
1963 | 1343 // Avoid sign flip. |
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1344 if (OopEncodingHeapMax < ClassMetaspaceSize + os::vm_page_size()) { |
1963 | 1345 return 0; |
1346 } | |
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1347 LP64_ONLY(return OopEncodingHeapMax - ClassMetaspaceSize - os::vm_page_size()); |
1064 | 1348 NOT_LP64(ShouldNotReachHere(); return 0); |
135
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1349 } |
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1350 |
0 | 1351 bool Arguments::should_auto_select_low_pause_collector() { |
1352 if (UseAutoGCSelectPolicy && | |
1353 !FLAG_IS_DEFAULT(MaxGCPauseMillis) && | |
1354 (MaxGCPauseMillis <= AutoGCSelectPauseMillis)) { | |
1355 if (PrintGCDetails) { | |
1356 // Cannot use gclog_or_tty yet. | |
1357 tty->print_cr("Automatic selection of the low pause collector" | |
1358 " based on pause goal of %d (ms)", MaxGCPauseMillis); | |
1359 } | |
1360 return true; | |
1361 } | |
1362 return false; | |
1363 } | |
1364 | |
1365 void Arguments::set_ergonomics_flags() { | |
1366 | |
4946 | 1367 if (os::is_server_class_machine()) { |
0 | 1368 // If no other collector is requested explicitly, |
1369 // let the VM select the collector based on | |
1370 // machine class and automatic selection policy. | |
1371 if (!UseSerialGC && | |
1372 !UseConcMarkSweepGC && | |
342
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1373 !UseG1GC && |
0 | 1374 !UseParNewGC && |
1375 FLAG_IS_DEFAULT(UseParallelGC)) { | |
1376 if (should_auto_select_low_pause_collector()) { | |
1377 FLAG_SET_ERGO(bool, UseConcMarkSweepGC, true); | |
1378 } else { | |
1379 FLAG_SET_ERGO(bool, UseParallelGC, true); | |
1380 } | |
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1381 } |
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1382 // Shared spaces work fine with other GCs but causes bytecode rewriting |
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1383 // to be disabled, which hurts interpreter performance and decreases |
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1384 // server performance. On server class machines, keep the default |
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1385 // off unless it is asked for. Future work: either add bytecode rewriting |
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1386 // at link time, or rewrite bytecodes in non-shared methods. |
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1387 if (!DumpSharedSpaces && !RequireSharedSpaces) { |
0 | 1388 no_shared_spaces(); |
1389 } | |
1390 } | |
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1391 |
1010 | 1392 #ifndef ZERO |
113
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1393 #ifdef _LP64 |
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1394 // Check that UseCompressedOops can be set with the max heap size allocated |
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1395 // by ergonomics. |
187 | 1396 if (MaxHeapSize <= max_heap_for_compressed_oops()) { |
1783 | 1397 #if !defined(COMPILER1) || defined(TIERED) |
2228 | 1398 if (FLAG_IS_DEFAULT(UseCompressedOops)) { |
932 | 1399 FLAG_SET_ERGO(bool, UseCompressedOops, true); |
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1400 } |
1060 | 1401 #endif |
325
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1402 #ifdef _WIN64 |
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1403 if (UseLargePages && UseCompressedOops) { |
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1404 // Cannot allocate guard pages for implicit checks in indexed addressing |
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1405 // mode, when large pages are specified on windows. |
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1406 // This flag could be switched ON if narrow oop base address is set to 0, |
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1407 // see code in Universe::initialize_heap(). |
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1408 Universe::set_narrow_oop_use_implicit_null_checks(false); |
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1409 } |
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1410 #endif // _WIN64 |
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1411 } else { |
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1412 if (UseCompressedOops && !FLAG_IS_DEFAULT(UseCompressedOops)) { |
344 | 1413 warning("Max heap size too large for Compressed Oops"); |
113
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1414 FLAG_SET_DEFAULT(UseCompressedOops, false); |
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1415 FLAG_SET_DEFAULT(UseCompressedKlassPointers, false); |
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1416 } |
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1417 } |
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1418 // UseCompressedOops must be on for UseCompressedKlassPointers to be on. |
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1419 if (!UseCompressedOops) { |
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1420 if (UseCompressedKlassPointers) { |
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1421 warning("UseCompressedKlassPointers requires UseCompressedOops"); |
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1422 } |
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1423 FLAG_SET_DEFAULT(UseCompressedKlassPointers, false); |
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1424 } else { |
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1425 // Turn on UseCompressedKlassPointers too |
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1426 // The compiler is broken for this so turn it on when the compiler is fixed. |
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1427 // if (FLAG_IS_DEFAULT(UseCompressedKlassPointers)) { |
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1428 // FLAG_SET_ERGO(bool, UseCompressedKlassPointers, true); |
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1429 // } |
6736
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1430 // Set the ClassMetaspaceSize to something that will not need to be |
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1431 // expanded, since it cannot be expanded. |
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1432 if (UseCompressedKlassPointers && FLAG_IS_DEFAULT(ClassMetaspaceSize)) { |
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1433 // 100,000 classes seems like a good size, so 100M assumes around 1K |
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1434 // per klass. The vtable and oopMap is embedded so we don't have a fixed |
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1435 // size per klass. Eventually, this will be parameterized because it |
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1436 // would also be useful to determine the optimal size of the |
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1437 // systemDictionary. |
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1438 FLAG_SET_ERGO(uintx, ClassMetaspaceSize, 100*M); |
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1439 } |
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1440 } |
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1441 // Also checks that certain machines are slower with compressed oops |
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1442 // in vm_version initialization code. |
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1443 #endif // _LP64 |
1010 | 1444 #endif // !ZERO |
0 | 1445 } |
1446 | |
1447 void Arguments::set_parallel_gc_flags() { | |
342
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1448 assert(UseParallelGC || UseParallelOldGC, "Error"); |
4879 | 1449 // Enable ParallelOld unless it was explicitly disabled (cmd line or rc file). |
1450 if (FLAG_IS_DEFAULT(UseParallelOldGC)) { | |
1451 FLAG_SET_DEFAULT(UseParallelOldGC, true); | |
0 | 1452 } |
4879 | 1453 FLAG_SET_DEFAULT(UseParallelGC, true); |
0 | 1454 |
1455 // If no heap maximum was requested explicitly, use some reasonable fraction | |
1456 // of the physical memory, up to a maximum of 1GB. | |
1457 if (UseParallelGC) { | |
4095
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1458 FLAG_SET_DEFAULT(ParallelGCThreads, |
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1459 Abstract_VM_Version::parallel_worker_threads()); |
10
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1460 |
0 | 1461 // If InitialSurvivorRatio or MinSurvivorRatio were not specified, but the |
1462 // SurvivorRatio has been set, reset their default values to SurvivorRatio + | |
1463 // 2. By doing this we make SurvivorRatio also work for Parallel Scavenger. | |
1464 // See CR 6362902 for details. | |
1465 if (!FLAG_IS_DEFAULT(SurvivorRatio)) { | |
1466 if (FLAG_IS_DEFAULT(InitialSurvivorRatio)) { | |
1467 FLAG_SET_DEFAULT(InitialSurvivorRatio, SurvivorRatio + 2); | |
1468 } | |
1469 if (FLAG_IS_DEFAULT(MinSurvivorRatio)) { | |
1470 FLAG_SET_DEFAULT(MinSurvivorRatio, SurvivorRatio + 2); | |
1471 } | |
1472 } | |
1473 | |
1474 if (UseParallelOldGC) { | |
1475 // Par compact uses lower default values since they are treated as | |
13
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1476 // minimums. These are different defaults because of the different |
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1477 // interpretation and are not ergonomically set. |
0 | 1478 if (FLAG_IS_DEFAULT(MarkSweepDeadRatio)) { |
13
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1479 FLAG_SET_DEFAULT(MarkSweepDeadRatio, 1); |
0 | 1480 } |
1481 } | |
1482 } | |
3322
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1483 if (UseNUMA) { |
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1484 if (FLAG_IS_DEFAULT(MinHeapDeltaBytes)) { |
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1485 FLAG_SET_DEFAULT(MinHeapDeltaBytes, 64*M); |
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1486 } |
3885 | 1487 // For those collectors or operating systems (eg, Windows) that do |
1488 // not support full UseNUMA, we will map to UseNUMAInterleaving for now | |
1489 UseNUMAInterleaving = true; | |
3322
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1490 } |
0 | 1491 } |
1492 | |
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1493 void Arguments::set_g1_gc_flags() { |
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1494 assert(UseG1GC, "Error"); |
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1495 #ifdef COMPILER1 |
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1496 FastTLABRefill = false; |
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1497 #endif |
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1498 FLAG_SET_DEFAULT(ParallelGCThreads, |
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1499 Abstract_VM_Version::parallel_worker_threads()); |
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1500 if (ParallelGCThreads == 0) { |
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1501 FLAG_SET_DEFAULT(ParallelGCThreads, |
751 | 1502 Abstract_VM_Version::parallel_worker_threads()); |
342
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1503 } |
751 | 1504 |
1284 | 1505 if (FLAG_IS_DEFAULT(MarkStackSize)) { |
1311
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1506 FLAG_SET_DEFAULT(MarkStackSize, 128 * TASKQUEUE_SIZE); |
1284 | 1507 } |
1508 if (PrintGCDetails && Verbose) { | |
1509 tty->print_cr("MarkStackSize: %uk MarkStackSizeMax: %uk", | |
1510 MarkStackSize / K, MarkStackSizeMax / K); | |
1511 tty->print_cr("ConcGCThreads: %u", ConcGCThreads); | |
1512 } | |
1356 | 1513 |
1514 if (FLAG_IS_DEFAULT(GCTimeRatio) || GCTimeRatio == 0) { | |
1515 // In G1, we want the default GC overhead goal to be higher than | |
1516 // say in PS. So we set it here to 10%. Otherwise the heap might | |
1517 // be expanded more aggressively than we would like it to. In | |
1518 // fact, even 10% seems to not be high enough in some cases | |
1519 // (especially small GC stress tests that the main thing they do | |
1520 // is allocation). We might consider increase it further. | |
1521 FLAG_SET_DEFAULT(GCTimeRatio, 9); | |
1522 } | |
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1523 } |
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1524 |
1064 | 1525 void Arguments::set_heap_size() { |
1526 if (!FLAG_IS_DEFAULT(DefaultMaxRAMFraction)) { | |
1527 // Deprecated flag | |
1528 FLAG_SET_CMDLINE(uintx, MaxRAMFraction, DefaultMaxRAMFraction); | |
1529 } | |
1530 | |
1531 const julong phys_mem = | |
1532 FLAG_IS_DEFAULT(MaxRAM) ? MIN2(os::physical_memory(), (julong)MaxRAM) | |
1533 : (julong)MaxRAM; | |
1534 | |
1535 // If the maximum heap size has not been set with -Xmx, | |
1536 // then set it as fraction of the size of physical memory, | |
1537 // respecting the maximum and minimum sizes of the heap. | |
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1538 if (FLAG_IS_DEFAULT(MaxHeapSize)) { |
1064 | 1539 julong reasonable_max = phys_mem / MaxRAMFraction; |
1540 | |
1541 if (phys_mem <= MaxHeapSize * MinRAMFraction) { | |
1542 // Small physical memory, so use a minimum fraction of it for the heap | |
1543 reasonable_max = phys_mem / MinRAMFraction; | |
1544 } else { | |
1545 // Not-small physical memory, so require a heap at least | |
1546 // as large as MaxHeapSize | |
1547 reasonable_max = MAX2(reasonable_max, (julong)MaxHeapSize); | |
1548 } | |
1549 if (!FLAG_IS_DEFAULT(ErgoHeapSizeLimit) && ErgoHeapSizeLimit != 0) { | |
1550 // Limit the heap size to ErgoHeapSizeLimit | |
1551 reasonable_max = MIN2(reasonable_max, (julong)ErgoHeapSizeLimit); | |
342
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1552 } |
1064 | 1553 if (UseCompressedOops) { |
1554 // Limit the heap size to the maximum possible when using compressed oops | |
1963 | 1555 julong max_coop_heap = (julong)max_heap_for_compressed_oops(); |
1556 if (HeapBaseMinAddress + MaxHeapSize < max_coop_heap) { | |
1557 // Heap should be above HeapBaseMinAddress to get zero based compressed oops | |
1558 // but it should be not less than default MaxHeapSize. | |
1559 max_coop_heap -= HeapBaseMinAddress; | |
1560 } | |
1561 reasonable_max = MIN2(reasonable_max, max_coop_heap); | |
1064 | 1562 } |
1563 reasonable_max = os::allocatable_physical_memory(reasonable_max); | |
1564 | |
1565 if (!FLAG_IS_DEFAULT(InitialHeapSize)) { | |
1566 // An initial heap size was specified on the command line, | |
1567 // so be sure that the maximum size is consistent. Done | |
1568 // after call to allocatable_physical_memory because that | |
1569 // method might reduce the allocation size. | |
1570 reasonable_max = MAX2(reasonable_max, (julong)InitialHeapSize); | |
1571 } | |
1572 | |
342
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1573 if (PrintGCDetails && Verbose) { |
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1574 // Cannot use gclog_or_tty yet. |
1064 | 1575 tty->print_cr(" Maximum heap size " SIZE_FORMAT, reasonable_max); |
342
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1576 } |
1064 | 1577 FLAG_SET_ERGO(uintx, MaxHeapSize, (uintx)reasonable_max); |
1578 } | |
1579 | |
1580 // If the initial_heap_size has not been set with InitialHeapSize | |
1581 // or -Xms, then set it as fraction of the size of physical memory, | |
1582 // respecting the maximum and minimum sizes of the heap. | |
1583 if (FLAG_IS_DEFAULT(InitialHeapSize)) { | |
1074
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1584 julong reasonable_minimum = (julong)(OldSize + NewSize); |
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1585 |
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1586 reasonable_minimum = MIN2(reasonable_minimum, (julong)MaxHeapSize); |
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1587 |
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|
1588 reasonable_minimum = os::allocatable_physical_memory(reasonable_minimum); |
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1589 |
1064 | 1590 julong reasonable_initial = phys_mem / InitialRAMFraction; |
1591 | |
1074
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1592 reasonable_initial = MAX2(reasonable_initial, reasonable_minimum); |
1064 | 1593 reasonable_initial = MIN2(reasonable_initial, (julong)MaxHeapSize); |
1594 | |
1595 reasonable_initial = os::allocatable_physical_memory(reasonable_initial); | |
1596 | |
1597 if (PrintGCDetails && Verbose) { | |
1598 // Cannot use gclog_or_tty yet. | |
1599 tty->print_cr(" Initial heap size " SIZE_FORMAT, (uintx)reasonable_initial); | |
1074
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1600 tty->print_cr(" Minimum heap size " SIZE_FORMAT, (uintx)reasonable_minimum); |
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1601 } |
1064 | 1602 FLAG_SET_ERGO(uintx, InitialHeapSize, (uintx)reasonable_initial); |
1074
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1603 set_min_heap_size((uintx)reasonable_minimum); |
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1604 } |
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1605 } |
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1606 |
0 | 1607 // This must be called after ergonomics because we want bytecode rewriting |
1608 // if the server compiler is used, or if UseSharedSpaces is disabled. | |
1609 void Arguments::set_bytecode_flags() { | |
1610 // Better not attempt to store into a read-only space. | |
1611 if (UseSharedSpaces) { | |
1612 FLAG_SET_DEFAULT(RewriteBytecodes, false); | |
1613 FLAG_SET_DEFAULT(RewriteFrequentPairs, false); | |
1614 } | |
1615 | |
1616 if (!RewriteBytecodes) { | |
1617 FLAG_SET_DEFAULT(RewriteFrequentPairs, false); | |
1618 } | |
1619 } | |
1620 | |
1621 // Aggressive optimization flags -XX:+AggressiveOpts | |
1622 void Arguments::set_aggressive_opts_flags() { | |
17
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|
1623 #ifdef COMPILER2 |
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1624 if (AggressiveOpts || !FLAG_IS_DEFAULT(AutoBoxCacheMax)) { |
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1625 if (FLAG_IS_DEFAULT(EliminateAutoBox)) { |
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|
1626 FLAG_SET_DEFAULT(EliminateAutoBox, true); |
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|
1627 } |
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|
1628 if (FLAG_IS_DEFAULT(AutoBoxCacheMax)) { |
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|
1629 FLAG_SET_DEFAULT(AutoBoxCacheMax, 20000); |
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|
1630 } |
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|
1631 |
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|
1632 // Feed the cache size setting into the JDK |
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|
1633 char buffer[1024]; |
513
2328d1d3f8cf
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|
1634 sprintf(buffer, "java.lang.Integer.IntegerCache.high=" INTX_FORMAT, AutoBoxCacheMax); |
17
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|
1635 add_property(buffer); |
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|
1636 } |
416
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|
1637 if (AggressiveOpts && FLAG_IS_DEFAULT(BiasedLockingStartupDelay)) { |
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6649622: HotSpot Biased locking needs tuning on latest CPUs
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|
1638 FLAG_SET_DEFAULT(BiasedLockingStartupDelay, 500); |
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|
1639 } |
17
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|
1640 #endif |
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|
1641 |
0 | 1642 if (AggressiveOpts) { |
61 | 1643 // Sample flag setting code |
1644 // if (FLAG_IS_DEFAULT(EliminateZeroing)) { | |
1645 // FLAG_SET_DEFAULT(EliminateZeroing, true); | |
1646 // } | |
0 | 1647 } |
1648 } | |
1649 | |
1650 //=========================================================================================================== | |
1651 // Parsing of java.compiler property | |
1652 | |
1653 void Arguments::process_java_compiler_argument(char* arg) { | |
1654 // For backwards compatibility, Djava.compiler=NONE or "" | |
1655 // causes us to switch to -Xint mode UNLESS -Xdebug | |
1656 // is also specified. | |
1657 if (strlen(arg) == 0 || strcasecmp(arg, "NONE") == 0) { | |
1658 set_java_compiler(true); // "-Djava.compiler[=...]" most recently seen. | |
1659 } | |
1660 } | |
1661 | |
1662 void Arguments::process_java_launcher_argument(const char* launcher, void* extra_info) { | |
1663 _sun_java_launcher = strdup(launcher); | |
2302
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|
1664 if (strcmp("gamma", _sun_java_launcher) == 0) { |
da091bb67459
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|
1665 _created_by_gamma_launcher = true; |
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|
1666 } |
0 | 1667 } |
1668 | |
1669 bool Arguments::created_by_java_launcher() { | |
1670 assert(_sun_java_launcher != NULL, "property must have value"); | |
1671 return strcmp(DEFAULT_JAVA_LAUNCHER, _sun_java_launcher) != 0; | |
1672 } | |
1673 | |
2302
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|
1674 bool Arguments::created_by_gamma_launcher() { |
da091bb67459
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|
1675 return _created_by_gamma_launcher; |
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|
1676 } |
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|
1677 |
0 | 1678 //=========================================================================================================== |
1679 // Parsing of main arguments | |
1680 | |
1244
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|
1681 bool Arguments::verify_interval(uintx val, uintx min, |
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6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
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|
1682 uintx max, const char* name) { |
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6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
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|
1683 // Returns true iff value is in the inclusive interval [min..max] |
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|
1684 // false, otherwise. |
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diff
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|
1685 if (val >= min && val <= max) { |
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|
1686 return true; |
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|
1687 } |
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|
1688 jio_fprintf(defaultStream::error_stream(), |
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|
1689 "%s of " UINTX_FORMAT " is invalid; must be between " UINTX_FORMAT |
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|
1690 " and " UINTX_FORMAT "\n", |
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|
1691 name, val, min, max); |
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|
1692 return false; |
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|
1693 } |
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|
1694 |
1744
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|
1695 bool Arguments::verify_min_value(intx val, intx min, const char* name) { |
2366
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|
1696 // Returns true if given value is at least specified min threshold |
1744
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diff
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|
1697 // false, otherwise. |
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|
1698 if (val >= min ) { |
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6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
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diff
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|
1699 return true; |
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|
1700 } |
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|
1701 jio_fprintf(defaultStream::error_stream(), |
2366
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|
1702 "%s of " INTX_FORMAT " is invalid; must be at least " INTX_FORMAT "\n", |
1744
f8c5d1bdaad4
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diff
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|
1703 name, val, min); |
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|
1704 return false; |
f8c5d1bdaad4
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|
1705 } |
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diff
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|
1706 |
0 | 1707 bool Arguments::verify_percentage(uintx value, const char* name) { |
1708 if (value <= 100) { | |
1709 return true; | |
1710 } | |
1711 jio_fprintf(defaultStream::error_stream(), | |
1712 "%s of " UINTX_FORMAT " is invalid; must be between 0 and 100\n", | |
1713 name, value); | |
1714 return false; | |
1715 } | |
1716 | |
1064 | 1717 static void force_serial_gc() { |
0 | 1718 FLAG_SET_DEFAULT(UseSerialGC, true); |
1719 FLAG_SET_DEFAULT(UseParNewGC, false); | |
1720 FLAG_SET_DEFAULT(UseConcMarkSweepGC, false); | |
945
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|
1721 FLAG_SET_DEFAULT(CMSIncrementalMode, false); // special CMS suboption |
0 | 1722 FLAG_SET_DEFAULT(UseParallelGC, false); |
1723 FLAG_SET_DEFAULT(UseParallelOldGC, false); | |
342
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|
1724 FLAG_SET_DEFAULT(UseG1GC, false); |
0 | 1725 } |
1726 | |
1727 static bool verify_serial_gc_flags() { | |
1728 return (UseSerialGC && | |
945
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6872136: CMS: confusing message may be printed when a collector is switched off implicitly
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|
1729 !(UseParNewGC || (UseConcMarkSweepGC || CMSIncrementalMode) || UseG1GC || |
342
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|
1730 UseParallelGC || UseParallelOldGC)); |
0 | 1731 } |
1732 | |
3767
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|
1733 // check if do gclog rotation |
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|
1734 // +UseGCLogFileRotation is a must, |
2a241e764894
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|
1735 // no gc log rotation when log file not supplied or |
2a241e764894
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|
1736 // NumberOfGCLogFiles is 0, or GCLogFileSize is 0 |
2a241e764894
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|
1737 void check_gclog_consistency() { |
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|
1738 if (UseGCLogFileRotation) { |
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|
1739 if ((Arguments::gc_log_filename() == NULL) || |
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|
1740 (NumberOfGCLogFiles == 0) || |
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|
1741 (GCLogFileSize == 0)) { |
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|
1742 jio_fprintf(defaultStream::output_stream(), |
3769
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7051430: CMS: ongoing CMS cycle should terminate abruptly to allow prompt JVM termination at exit
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|
1743 "To enable GC log rotation, use -Xloggc:<filename> -XX:+UseGCLogFileRotation -XX:NumberOfGCLogFiles=<num_of_files> -XX:GCLogFileSize=<num_of_size>\n" |
3767
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|
1744 "where num_of_file > 0 and num_of_size > 0\n" |
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|
1745 "GC log rotation is turned off\n"); |
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|
1746 UseGCLogFileRotation = false; |
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|
1747 } |
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|
1748 } |
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|
1749 |
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|
1750 if (UseGCLogFileRotation && GCLogFileSize < 8*K) { |
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1751 FLAG_SET_CMDLINE(uintx, GCLogFileSize, 8*K); |
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1752 jio_fprintf(defaultStream::output_stream(), |
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|
1753 "GCLogFileSize changed to minimum 8K\n"); |
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|
1754 } |
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|
1755 } |
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|
1756 |
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28372612af5e
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|
1757 // Check consistency of GC selection |
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|
1758 bool Arguments::check_gc_consistency() { |
3767
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|
1759 check_gclog_consistency(); |
10
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|
1760 bool status = true; |
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|
1761 // Ensure that the user has not selected conflicting sets |
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|
1762 // of collectors. [Note: this check is merely a user convenience; |
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1763 // collectors over-ride each other so that only a non-conflicting |
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1764 // set is selected; however what the user gets is not what they |
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|
1765 // may have expected from the combination they asked for. It's |
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|
1766 // better to reduce user confusion by not allowing them to |
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|
1767 // select conflicting combinations. |
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|
1768 uint i = 0; |
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|
1769 if (UseSerialGC) i++; |
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|
1770 if (UseConcMarkSweepGC || UseParNewGC) i++; |
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|
1771 if (UseParallelGC || UseParallelOldGC) i++; |
845
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6700789: G1: Enable use of compressed oops with G1 heaps
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|
1772 if (UseG1GC) i++; |
10
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|
1773 if (i > 1) { |
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|
1774 jio_fprintf(defaultStream::error_stream(), |
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|
1775 "Conflicting collector combinations in option list; " |
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|
1776 "please refer to the release notes for the combinations " |
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|
1777 "allowed\n"); |
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|
1778 status = false; |
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|
1779 } |
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|
1780 |
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|
1781 return status; |
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|
1782 } |
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|
1783 |
1744
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|
1784 // Check stack pages settings |
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|
1785 bool Arguments::check_stack_pages() |
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|
1786 { |
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|
1787 bool status = true; |
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|
1788 status = status && verify_min_value(StackYellowPages, 1, "StackYellowPages"); |
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|
1789 status = status && verify_min_value(StackRedPages, 1, "StackRedPages"); |
1867
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diff
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|
1790 // greater stack shadow pages can't generate instruction to bang stack |
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|
1791 status = status && verify_interval(StackShadowPages, 1, 50, "StackShadowPages"); |
1744
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|
1792 return status; |
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|
1793 } |
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1794 |
0 | 1795 // Check the consistency of vm_init_args |
1796 bool Arguments::check_vm_args_consistency() { | |
1797 // Method for adding checks for flag consistency. | |
1798 // The intent is to warn the user of all possible conflicts, | |
1799 // before returning an error. | |
1800 // Note: Needs platform-dependent factoring. | |
1801 bool status = true; | |
1802 | |
1803 #if ( (defined(COMPILER2) && defined(SPARC))) | |
1804 // NOTE: The call to VM_Version_init depends on the fact that VM_Version_init | |
1805 // on sparc doesn't require generation of a stub as is the case on, e.g., | |
1806 // x86. Normally, VM_Version_init must be called from init_globals in | |
1807 // init.cpp, which is called by the initial java thread *after* arguments | |
1808 // have been parsed. VM_Version_init gets called twice on sparc. | |
1809 extern void VM_Version_init(); | |
1810 VM_Version_init(); | |
1811 if (!VM_Version::has_v9()) { | |
1812 jio_fprintf(defaultStream::error_stream(), | |
1813 "V8 Machine detected, Server requires V9\n"); | |
1814 status = false; | |
1815 } | |
1816 #endif /* COMPILER2 && SPARC */ | |
1817 | |
1818 // Allow both -XX:-UseStackBanging and -XX:-UseBoundThreads in non-product | |
1819 // builds so the cost of stack banging can be measured. | |
1820 #if (defined(PRODUCT) && defined(SOLARIS)) | |
1821 if (!UseBoundThreads && !UseStackBanging) { | |
1822 jio_fprintf(defaultStream::error_stream(), | |
1823 "-UseStackBanging conflicts with -UseBoundThreads\n"); | |
1824 | |
1825 status = false; | |
1826 } | |
1827 #endif | |
1828 | |
1829 if (TLABRefillWasteFraction == 0) { | |
1830 jio_fprintf(defaultStream::error_stream(), | |
1831 "TLABRefillWasteFraction should be a denominator, " | |
1832 "not " SIZE_FORMAT "\n", | |
1833 TLABRefillWasteFraction); | |
1834 status = false; | |
1835 } | |
1836 | |
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1837 status = status && verify_percentage(AdaptiveSizePolicyWeight, |
0 | 1838 "AdaptiveSizePolicyWeight"); |
10
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1839 status = status && verify_percentage(ThresholdTolerance, "ThresholdTolerance"); |
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1840 status = status && verify_percentage(MinHeapFreeRatio, "MinHeapFreeRatio"); |
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1841 status = status && verify_percentage(MaxHeapFreeRatio, "MaxHeapFreeRatio"); |
0 | 1842 |
1843 if (MinHeapFreeRatio > MaxHeapFreeRatio) { | |
1844 jio_fprintf(defaultStream::error_stream(), | |
1845 "MinHeapFreeRatio (" UINTX_FORMAT ") must be less than or " | |
1846 "equal to MaxHeapFreeRatio (" UINTX_FORMAT ")\n", | |
1847 MinHeapFreeRatio, MaxHeapFreeRatio); | |
1848 status = false; | |
1849 } | |
1850 // Keeping the heap 100% free is hard ;-) so limit it to 99%. | |
1851 MinHeapFreeRatio = MIN2(MinHeapFreeRatio, (uintx) 99); | |
1852 | |
1853 if (FullGCALot && FLAG_IS_DEFAULT(MarkSweepAlwaysCompactCount)) { | |
1854 MarkSweepAlwaysCompactCount = 1; // Move objects every gc. | |
1855 } | |
1856 | |
483
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|
1857 if (UseParallelOldGC && ParallelOldGCSplitALot) { |
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|
1858 // Settings to encourage splitting. |
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|
1859 if (!FLAG_IS_CMDLINE(NewRatio)) { |
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|
1860 FLAG_SET_CMDLINE(intx, NewRatio, 2); |
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|
1861 } |
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|
1862 if (!FLAG_IS_CMDLINE(ScavengeBeforeFullGC)) { |
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|
1863 FLAG_SET_CMDLINE(bool, ScavengeBeforeFullGC, false); |
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|
1864 } |
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|
1865 } |
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|
1866 |
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1867 status = status && verify_percentage(GCHeapFreeLimit, "GCHeapFreeLimit"); |
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1868 status = status && verify_percentage(GCTimeLimit, "GCTimeLimit"); |
0 | 1869 if (GCTimeLimit == 100) { |
1870 // Turn off gc-overhead-limit-exceeded checks | |
1871 FLAG_SET_DEFAULT(UseGCOverheadLimit, false); | |
1872 } | |
1873 | |
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|
1874 status = status && verify_percentage(GCHeapFreeLimit, "GCHeapFreeLimit"); |
0 | 1875 |
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|
1876 status = status && check_gc_consistency(); |
1744
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|
1877 status = status && check_stack_pages(); |
0 | 1878 |
1879 if (_has_alloc_profile) { | |
1880 if (UseParallelGC || UseParallelOldGC) { | |
1881 jio_fprintf(defaultStream::error_stream(), | |
1882 "error: invalid argument combination.\n" | |
1883 "Allocation profiling (-Xaprof) cannot be used together with " | |
1884 "Parallel GC (-XX:+UseParallelGC or -XX:+UseParallelOldGC).\n"); | |
1885 status = false; | |
1886 } | |
1887 if (UseConcMarkSweepGC) { | |
1888 jio_fprintf(defaultStream::error_stream(), | |
1889 "error: invalid argument combination.\n" | |
1890 "Allocation profiling (-Xaprof) cannot be used together with " | |
1891 "the CMS collector (-XX:+UseConcMarkSweepGC).\n"); | |
1892 status = false; | |
1893 } | |
1894 } | |
1895 | |
1896 if (CMSIncrementalMode) { | |
1897 if (!UseConcMarkSweepGC) { | |
1898 jio_fprintf(defaultStream::error_stream(), | |
1899 "error: invalid argument combination.\n" | |
1900 "The CMS collector (-XX:+UseConcMarkSweepGC) must be " | |
1901 "selected in order\nto use CMSIncrementalMode.\n"); | |
1902 status = false; | |
1903 } else { | |
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1904 status = status && verify_percentage(CMSIncrementalDutyCycle, |
0 | 1905 "CMSIncrementalDutyCycle"); |
10
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|
1906 status = status && verify_percentage(CMSIncrementalDutyCycleMin, |
0 | 1907 "CMSIncrementalDutyCycleMin"); |
10
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|
1908 status = status && verify_percentage(CMSIncrementalSafetyFactor, |
0 | 1909 "CMSIncrementalSafetyFactor"); |
10
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|
1910 status = status && verify_percentage(CMSIncrementalOffset, |
0 | 1911 "CMSIncrementalOffset"); |
10
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|
1912 status = status && verify_percentage(CMSExpAvgFactor, |
0 | 1913 "CMSExpAvgFactor"); |
1914 // If it was not set on the command line, set | |
1915 // CMSInitiatingOccupancyFraction to 1 so icms can initiate cycles early. | |
1916 if (CMSInitiatingOccupancyFraction < 0) { | |
1917 FLAG_SET_DEFAULT(CMSInitiatingOccupancyFraction, 1); | |
1918 } | |
1919 } | |
1920 } | |
1921 | |
1922 // CMS space iteration, which FLSVerifyAllHeapreferences entails, | |
1923 // insists that we hold the requisite locks so that the iteration is | |
1924 // MT-safe. For the verification at start-up and shut-down, we don't | |
1925 // yet have a good way of acquiring and releasing these locks, | |
1926 // which are not visible at the CollectedHeap level. We want to | |
1927 // be able to acquire these locks and then do the iteration rather | |
1928 // than just disable the lock verification. This will be fixed under | |
1929 // bug 4788986. | |
1930 if (UseConcMarkSweepGC && FLSVerifyAllHeapReferences) { | |
1931 if (VerifyGCStartAt == 0) { | |
1932 warning("Heap verification at start-up disabled " | |
1933 "(due to current incompatibility with FLSVerifyAllHeapReferences)"); | |
1934 VerifyGCStartAt = 1; // Disable verification at start-up | |
1935 } | |
1936 if (VerifyBeforeExit) { | |
1937 warning("Heap verification at shutdown disabled " | |
1938 "(due to current incompatibility with FLSVerifyAllHeapReferences)"); | |
1939 VerifyBeforeExit = false; // Disable verification at shutdown | |
1940 } | |
1941 } | |
1942 | |
1943 // Note: only executed in non-PRODUCT mode | |
1944 if (!UseAsyncConcMarkSweepGC && | |
1945 (ExplicitGCInvokesConcurrent || | |
1946 ExplicitGCInvokesConcurrentAndUnloadsClasses)) { | |
1947 jio_fprintf(defaultStream::error_stream(), | |
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1948 "error: +ExplicitGCInvokesConcurrent[AndUnloadsClasses] conflicts" |
0 | 1949 " with -UseAsyncConcMarkSweepGC"); |
1950 status = false; | |
1951 } | |
1952 | |
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1953 status = status && verify_min_value(ParGCArrayScanChunk, 1, "ParGCArrayScanChunk"); |
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1954 |
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1955 #ifndef SERIALGC |
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1956 if (UseG1GC) { |
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1957 status = status && verify_percentage(InitiatingHeapOccupancyPercent, |
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1958 "InitiatingHeapOccupancyPercent"); |
2174
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1959 status = status && verify_min_value(G1RefProcDrainInterval, 1, |
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1960 "G1RefProcDrainInterval"); |
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|
1961 status = status && verify_min_value((intx)G1ConcMarkStepDurationMillis, 1, |
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1962 "G1ConcMarkStepDurationMillis"); |
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1963 } |
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1964 #endif |
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1965 |
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1966 status = status && verify_interval(RefDiscoveryPolicy, |
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1967 ReferenceProcessor::DiscoveryPolicyMin, |
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1968 ReferenceProcessor::DiscoveryPolicyMax, |
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1969 "RefDiscoveryPolicy"); |
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1970 |
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1971 // Limit the lower bound of this flag to 1 as it is used in a division |
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1972 // expression. |
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1973 status = status && verify_interval(TLABWasteTargetPercent, |
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1974 1, 100, "TLABWasteTargetPercent"); |
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1975 |
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1976 status = status && verify_object_alignment(); |
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1977 |
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1978 status = status && verify_min_value(ClassMetaspaceSize, 1*M, |
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1979 "ClassMetaspaceSize"); |
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1980 |
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1981 #ifdef SPARC |
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1982 if (UseConcMarkSweepGC || UseG1GC) { |
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1983 // Issue a stern warning if the user has explicitly set |
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1984 // UseMemSetInBOT (it is known to cause issues), but allow |
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1985 // use for experimentation and debugging. |
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1986 if (VM_Version::is_sun4v() && UseMemSetInBOT) { |
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1987 assert(!FLAG_IS_DEFAULT(UseMemSetInBOT), "Error"); |
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1988 warning("Experimental flag -XX:+UseMemSetInBOT is known to cause instability" |
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1989 " on sun4v; please understand that you are using at your own risk!"); |
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1990 } |
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|
1991 } |
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|
1992 #endif // SPARC |
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|
1993 |
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1994 if (PrintNMTStatistics && MemTracker::tracking_level() == MemTracker::NMT_off) { |
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1995 warning("PrintNMTStatistics is disabled, because native memory tracking is not enabled"); |
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|
1996 PrintNMTStatistics = false; |
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|
1997 } |
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|
1998 |
0 | 1999 return status; |
2000 } | |
2001 | |
2002 bool Arguments::is_bad_option(const JavaVMOption* option, jboolean ignore, | |
2003 const char* option_type) { | |
2004 if (ignore) return false; | |
2005 | |
2006 const char* spacer = " "; | |
2007 if (option_type == NULL) { | |
2008 option_type = ++spacer; // Set both to the empty string. | |
2009 } | |
2010 | |
2011 if (os::obsolete_option(option)) { | |
2012 jio_fprintf(defaultStream::error_stream(), | |
2013 "Obsolete %s%soption: %s\n", option_type, spacer, | |
2014 option->optionString); | |
2015 return false; | |
2016 } else { | |
2017 jio_fprintf(defaultStream::error_stream(), | |
2018 "Unrecognized %s%soption: %s\n", option_type, spacer, | |
2019 option->optionString); | |
2020 return true; | |
2021 } | |
2022 } | |
2023 | |
2024 static const char* user_assertion_options[] = { | |
2025 "-da", "-ea", "-disableassertions", "-enableassertions", 0 | |
2026 }; | |
2027 | |
2028 static const char* system_assertion_options[] = { | |
2029 "-dsa", "-esa", "-disablesystemassertions", "-enablesystemassertions", 0 | |
2030 }; | |
2031 | |
2032 // Return true if any of the strings in null-terminated array 'names' matches. | |
2033 // If tail_allowed is true, then the tail must begin with a colon; otherwise, | |
2034 // the option must match exactly. | |
2035 static bool match_option(const JavaVMOption* option, const char** names, const char** tail, | |
2036 bool tail_allowed) { | |
2037 for (/* empty */; *names != NULL; ++names) { | |
2038 if (match_option(option, *names, tail)) { | |
2039 if (**tail == '\0' || tail_allowed && **tail == ':') { | |
2040 return true; | |
2041 } | |
2042 } | |
2043 } | |
2044 return false; | |
2045 } | |
2046 | |
1284 | 2047 bool Arguments::parse_uintx(const char* value, |
2048 uintx* uintx_arg, | |
2049 uintx min_size) { | |
2050 | |
2051 // Check the sign first since atomull() parses only unsigned values. | |
2052 bool value_is_positive = !(*value == '-'); | |
2053 | |
2054 if (value_is_positive) { | |
2055 julong n; | |
2056 bool good_return = atomull(value, &n); | |
2057 if (good_return) { | |
2058 bool above_minimum = n >= min_size; | |
2059 bool value_is_too_large = n > max_uintx; | |
2060 | |
2061 if (above_minimum && !value_is_too_large) { | |
2062 *uintx_arg = n; | |
2063 return true; | |
2064 } | |
2065 } | |
2066 } | |
2067 return false; | |
2068 } | |
2069 | |
0 | 2070 Arguments::ArgsRange Arguments::parse_memory_size(const char* s, |
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|
2071 julong* long_arg, |
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|
2072 julong min_size) { |
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|
2073 if (!atomull(s, long_arg)) return arg_unreadable; |
0 | 2074 return check_memory_size(*long_arg, min_size); |
2075 } | |
2076 | |
2077 // Parse JavaVMInitArgs structure | |
2078 | |
2079 jint Arguments::parse_vm_init_args(const JavaVMInitArgs* args) { | |
2080 // For components of the system classpath. | |
2081 SysClassPath scp(Arguments::get_sysclasspath()); | |
2082 bool scp_assembly_required = false; | |
2083 | |
2084 // Save default settings for some mode flags | |
2085 Arguments::_AlwaysCompileLoopMethods = AlwaysCompileLoopMethods; | |
2086 Arguments::_UseOnStackReplacement = UseOnStackReplacement; | |
2087 Arguments::_ClipInlining = ClipInlining; | |
2088 Arguments::_BackgroundCompilation = BackgroundCompilation; | |
2089 | |
3341
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|
2090 // Setup flags for mixed which is the default |
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|
2091 set_mode_flags(_mixed); |
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|
2092 |
0 | 2093 // Parse JAVA_TOOL_OPTIONS environment variable (if present) |
2094 jint result = parse_java_tool_options_environment_variable(&scp, &scp_assembly_required); | |
2095 if (result != JNI_OK) { | |
2096 return result; | |
2097 } | |
2098 | |
2099 // Parse JavaVMInitArgs structure passed in | |
2100 result = parse_each_vm_init_arg(args, &scp, &scp_assembly_required, COMMAND_LINE); | |
2101 if (result != JNI_OK) { | |
2102 return result; | |
2103 } | |
2104 | |
531
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|
2105 if (AggressiveOpts) { |
40ee984935b9
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|
2106 // Insert alt-rt.jar between user-specified bootclasspath |
40ee984935b9
6792705: Add JAR file to bootclasspath when using AggressiveOpts
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|
2107 // prefix and the default bootclasspath. os::set_boot_path() |
40ee984935b9
6792705: Add JAR file to bootclasspath when using AggressiveOpts
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diff
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|
2108 // uses meta_index_dir as the default bootclasspath directory. |
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|
2109 const char* altclasses_jar = "alt-rt.jar"; |
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|
2110 size_t altclasses_path_len = strlen(get_meta_index_dir()) + 1 + |
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|
2111 strlen(altclasses_jar); |
6197 | 2112 char* altclasses_path = NEW_C_HEAP_ARRAY(char, altclasses_path_len, mtInternal); |
531
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|
2113 strcpy(altclasses_path, get_meta_index_dir()); |
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|
2114 strcat(altclasses_path, altclasses_jar); |
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|
2115 scp.add_suffix_to_prefix(altclasses_path); |
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|
2116 scp_assembly_required = true; |
6197 | 2117 FREE_C_HEAP_ARRAY(char, altclasses_path, mtInternal); |
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|
2118 } |
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|
2119 |
5915 | 2120 if (WhiteBoxAPI) { |
2121 // Append wb.jar to bootclasspath if enabled | |
2122 const char* wb_jar = "wb.jar"; | |
2123 size_t wb_path_len = strlen(get_meta_index_dir()) + 1 + | |
2124 strlen(wb_jar); | |
6197 | 2125 char* wb_path = NEW_C_HEAP_ARRAY(char, wb_path_len, mtInternal); |
5915 | 2126 strcpy(wb_path, get_meta_index_dir()); |
2127 strcat(wb_path, wb_jar); | |
2128 scp.add_suffix(wb_path); | |
2129 scp_assembly_required = true; | |
6197 | 2130 FREE_C_HEAP_ARRAY(char, wb_path, mtInternal); |
5915 | 2131 } |
2132 | |
0 | 2133 // Parse _JAVA_OPTIONS environment variable (if present) (mimics classic VM) |
2134 result = parse_java_options_environment_variable(&scp, &scp_assembly_required); | |
2135 if (result != JNI_OK) { | |
2136 return result; | |
2137 } | |
2138 | |
2139 // Do final processing now that all arguments have been parsed | |
2140 result = finalize_vm_init_args(&scp, scp_assembly_required); | |
2141 if (result != JNI_OK) { | |
2142 return result; | |
2143 } | |
2144 | |
2145 return JNI_OK; | |
2146 } | |
2147 | |
2148 jint Arguments::parse_each_vm_init_arg(const JavaVMInitArgs* args, | |
2149 SysClassPath* scp_p, | |
2150 bool* scp_assembly_required_p, | |
2151 FlagValueOrigin origin) { | |
2152 // Remaining part of option string | |
2153 const char* tail; | |
2154 | |
2155 // iterate over arguments | |
2156 for (int index = 0; index < args->nOptions; index++) { | |
2157 bool is_absolute_path = false; // for -agentpath vs -agentlib | |
2158 | |
2159 const JavaVMOption* option = args->options + index; | |
2160 | |
2161 if (!match_option(option, "-Djava.class.path", &tail) && | |
2162 !match_option(option, "-Dsun.java.command", &tail) && | |
2163 !match_option(option, "-Dsun.java.launcher", &tail)) { | |
2164 | |
2165 // add all jvm options to the jvm_args string. This string | |
2166 // is used later to set the java.vm.args PerfData string constant. | |
2167 // the -Djava.class.path and the -Dsun.java.command options are | |
2168 // omitted from jvm_args string as each have their own PerfData | |
2169 // string constant object. | |
2170 build_jvm_args(option->optionString); | |
2171 } | |
2172 | |
2173 // -verbose:[class/gc/jni] | |
2174 if (match_option(option, "-verbose", &tail)) { | |
2175 if (!strcmp(tail, ":class") || !strcmp(tail, "")) { | |
2176 FLAG_SET_CMDLINE(bool, TraceClassLoading, true); | |
2177 FLAG_SET_CMDLINE(bool, TraceClassUnloading, true); | |
2178 } else if (!strcmp(tail, ":gc")) { | |
2179 FLAG_SET_CMDLINE(bool, PrintGC, true); | |
2180 } else if (!strcmp(tail, ":jni")) { | |
2181 FLAG_SET_CMDLINE(bool, PrintJNIResolving, true); | |
2182 } | |
2183 // -da / -ea / -disableassertions / -enableassertions | |
2184 // These accept an optional class/package name separated by a colon, e.g., | |
2185 // -da:java.lang.Thread. | |
2186 } else if (match_option(option, user_assertion_options, &tail, true)) { | |
2187 bool enable = option->optionString[1] == 'e'; // char after '-' is 'e' | |
2188 if (*tail == '\0') { | |
2189 JavaAssertions::setUserClassDefault(enable); | |
2190 } else { | |
2191 assert(*tail == ':', "bogus match by match_option()"); | |
2192 JavaAssertions::addOption(tail + 1, enable); | |
2193 } | |
2194 // -dsa / -esa / -disablesystemassertions / -enablesystemassertions | |
2195 } else if (match_option(option, system_assertion_options, &tail, false)) { | |
2196 bool enable = option->optionString[1] == 'e'; // char after '-' is 'e' | |
2197 JavaAssertions::setSystemClassDefault(enable); | |
2198 // -bootclasspath: | |
2199 } else if (match_option(option, "-Xbootclasspath:", &tail)) { | |
2200 scp_p->reset_path(tail); | |
2201 *scp_assembly_required_p = true; | |
2202 // -bootclasspath/a: | |
2203 } else if (match_option(option, "-Xbootclasspath/a:", &tail)) { | |
2204 scp_p->add_suffix(tail); | |
2205 *scp_assembly_required_p = true; | |
2206 // -bootclasspath/p: | |
2207 } else if (match_option(option, "-Xbootclasspath/p:", &tail)) { | |
2208 scp_p->add_prefix(tail); | |
2209 *scp_assembly_required_p = true; | |
2210 // -Xrun | |
2211 } else if (match_option(option, "-Xrun", &tail)) { | |
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2212 if (tail != NULL) { |
0 | 2213 const char* pos = strchr(tail, ':'); |
2214 size_t len = (pos == NULL) ? strlen(tail) : pos - tail; | |
6197 | 2215 char* name = (char*)memcpy(NEW_C_HEAP_ARRAY(char, len + 1, mtInternal), tail, len); |
0 | 2216 name[len] = '\0'; |
2217 | |
2218 char *options = NULL; | |
2219 if(pos != NULL) { | |
2220 size_t len2 = strlen(pos+1) + 1; // options start after ':'. Final zero must be copied. | |
6197 | 2221 options = (char*)memcpy(NEW_C_HEAP_ARRAY(char, len2, mtInternal), pos+1, len2); |
0 | 2222 } |
2223 #ifdef JVMTI_KERNEL | |
2224 if ((strcmp(name, "hprof") == 0) || (strcmp(name, "jdwp") == 0)) { | |
2225 warning("profiling and debugging agents are not supported with Kernel VM"); | |
2226 } else | |
2227 #endif // JVMTI_KERNEL | |
2228 add_init_library(name, options); | |
2229 } | |
2230 // -agentlib and -agentpath | |
2231 } else if (match_option(option, "-agentlib:", &tail) || | |
2232 (is_absolute_path = match_option(option, "-agentpath:", &tail))) { | |
2233 if(tail != NULL) { | |
2234 const char* pos = strchr(tail, '='); | |
2235 size_t len = (pos == NULL) ? strlen(tail) : pos - tail; | |
6197 | 2236 char* name = strncpy(NEW_C_HEAP_ARRAY(char, len + 1, mtInternal), tail, len); |
0 | 2237 name[len] = '\0'; |
2238 | |
2239 char *options = NULL; | |
2240 if(pos != NULL) { | |
6197 | 2241 options = strcpy(NEW_C_HEAP_ARRAY(char, strlen(pos + 1) + 1, mtInternal), pos + 1); |
0 | 2242 } |
2243 #ifdef JVMTI_KERNEL | |
2244 if ((strcmp(name, "hprof") == 0) || (strcmp(name, "jdwp") == 0)) { | |
2245 warning("profiling and debugging agents are not supported with Kernel VM"); | |
2246 } else | |
2247 #endif // JVMTI_KERNEL | |
2248 add_init_agent(name, options, is_absolute_path); | |
2249 | |
2250 } | |
2251 // -javaagent | |
2252 } else if (match_option(option, "-javaagent:", &tail)) { | |
2253 if(tail != NULL) { | |
6197 | 2254 char *options = strcpy(NEW_C_HEAP_ARRAY(char, strlen(tail) + 1, mtInternal), tail); |
0 | 2255 add_init_agent("instrument", options, false); |
2256 } | |
2257 // -Xnoclassgc | |
2258 } else if (match_option(option, "-Xnoclassgc", &tail)) { | |
2259 FLAG_SET_CMDLINE(bool, ClassUnloading, false); | |
2260 // -Xincgc: i-CMS | |
2261 } else if (match_option(option, "-Xincgc", &tail)) { | |
2262 FLAG_SET_CMDLINE(bool, UseConcMarkSweepGC, true); | |
2263 FLAG_SET_CMDLINE(bool, CMSIncrementalMode, true); | |
2264 // -Xnoincgc: no i-CMS | |
2265 } else if (match_option(option, "-Xnoincgc", &tail)) { | |
2266 FLAG_SET_CMDLINE(bool, UseConcMarkSweepGC, false); | |
2267 FLAG_SET_CMDLINE(bool, CMSIncrementalMode, false); | |
2268 // -Xconcgc | |
2269 } else if (match_option(option, "-Xconcgc", &tail)) { | |
2270 FLAG_SET_CMDLINE(bool, UseConcMarkSweepGC, true); | |
2271 // -Xnoconcgc | |
2272 } else if (match_option(option, "-Xnoconcgc", &tail)) { | |
2273 FLAG_SET_CMDLINE(bool, UseConcMarkSweepGC, false); | |
2274 // -Xbatch | |
2275 } else if (match_option(option, "-Xbatch", &tail)) { | |
2276 FLAG_SET_CMDLINE(bool, BackgroundCompilation, false); | |
2277 // -Xmn for compatibility with other JVM vendors | |
2278 } else if (match_option(option, "-Xmn", &tail)) { | |
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2279 julong long_initial_eden_size = 0; |
0 | 2280 ArgsRange errcode = parse_memory_size(tail, &long_initial_eden_size, 1); |
2281 if (errcode != arg_in_range) { | |
2282 jio_fprintf(defaultStream::error_stream(), | |
2283 "Invalid initial eden size: %s\n", option->optionString); | |
2284 describe_range_error(errcode); | |
2285 return JNI_EINVAL; | |
2286 } | |
1064 | 2287 FLAG_SET_CMDLINE(uintx, MaxNewSize, (uintx)long_initial_eden_size); |
2288 FLAG_SET_CMDLINE(uintx, NewSize, (uintx)long_initial_eden_size); | |
0 | 2289 // -Xms |
2290 } else if (match_option(option, "-Xms", &tail)) { | |
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2291 julong long_initial_heap_size = 0; |
0 | 2292 ArgsRange errcode = parse_memory_size(tail, &long_initial_heap_size, 1); |
2293 if (errcode != arg_in_range) { | |
2294 jio_fprintf(defaultStream::error_stream(), | |
2295 "Invalid initial heap size: %s\n", option->optionString); | |
2296 describe_range_error(errcode); | |
2297 return JNI_EINVAL; | |
2298 } | |
1064 | 2299 FLAG_SET_CMDLINE(uintx, InitialHeapSize, (uintx)long_initial_heap_size); |
0 | 2300 // Currently the minimum size and the initial heap sizes are the same. |
1064 | 2301 set_min_heap_size(InitialHeapSize); |
0 | 2302 // -Xmx |
2303 } else if (match_option(option, "-Xmx", &tail)) { | |
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2304 julong long_max_heap_size = 0; |
0 | 2305 ArgsRange errcode = parse_memory_size(tail, &long_max_heap_size, 1); |
2306 if (errcode != arg_in_range) { | |
2307 jio_fprintf(defaultStream::error_stream(), | |
2308 "Invalid maximum heap size: %s\n", option->optionString); | |
2309 describe_range_error(errcode); | |
2310 return JNI_EINVAL; | |
2311 } | |
1064 | 2312 FLAG_SET_CMDLINE(uintx, MaxHeapSize, (uintx)long_max_heap_size); |
0 | 2313 // Xmaxf |
2314 } else if (match_option(option, "-Xmaxf", &tail)) { | |
2315 int maxf = (int)(atof(tail) * 100); | |
2316 if (maxf < 0 || maxf > 100) { | |
2317 jio_fprintf(defaultStream::error_stream(), | |
2318 "Bad max heap free percentage size: %s\n", | |
2319 option->optionString); | |
2320 return JNI_EINVAL; | |
2321 } else { | |
2322 FLAG_SET_CMDLINE(uintx, MaxHeapFreeRatio, maxf); | |
2323 } | |
2324 // Xminf | |
2325 } else if (match_option(option, "-Xminf", &tail)) { | |
2326 int minf = (int)(atof(tail) * 100); | |
2327 if (minf < 0 || minf > 100) { | |
2328 jio_fprintf(defaultStream::error_stream(), | |
2329 "Bad min heap free percentage size: %s\n", | |
2330 option->optionString); | |
2331 return JNI_EINVAL; | |
2332 } else { | |
2333 FLAG_SET_CMDLINE(uintx, MinHeapFreeRatio, minf); | |
2334 } | |
2335 // -Xss | |
2336 } else if (match_option(option, "-Xss", &tail)) { | |
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2337 julong long_ThreadStackSize = 0; |
0 | 2338 ArgsRange errcode = parse_memory_size(tail, &long_ThreadStackSize, 1000); |
2339 if (errcode != arg_in_range) { | |
2340 jio_fprintf(defaultStream::error_stream(), | |
2341 "Invalid thread stack size: %s\n", option->optionString); | |
2342 describe_range_error(errcode); | |
2343 return JNI_EINVAL; | |
2344 } | |
2345 // Internally track ThreadStackSize in units of 1024 bytes. | |
2346 FLAG_SET_CMDLINE(intx, ThreadStackSize, | |
2347 round_to((int)long_ThreadStackSize, K) / K); | |
2348 // -Xoss | |
2349 } else if (match_option(option, "-Xoss", &tail)) { | |
2350 // HotSpot does not have separate native and Java stacks, ignore silently for compatibility | |
2351 // -Xmaxjitcodesize | |
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2352 } else if (match_option(option, "-Xmaxjitcodesize", &tail) || |
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2353 match_option(option, "-XX:ReservedCodeCacheSize=", &tail)) { |
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2354 julong long_ReservedCodeCacheSize = 0; |
0 | 2355 ArgsRange errcode = parse_memory_size(tail, &long_ReservedCodeCacheSize, |
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2356 (size_t)InitialCodeCacheSize); |
0 | 2357 if (errcode != arg_in_range) { |
2358 jio_fprintf(defaultStream::error_stream(), | |
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2359 "Invalid maximum code cache size: %s. Should be greater than InitialCodeCacheSize=%dK\n", |
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2360 option->optionString, InitialCodeCacheSize/K); |
0 | 2361 describe_range_error(errcode); |
2362 return JNI_EINVAL; | |
2363 } | |
2364 FLAG_SET_CMDLINE(uintx, ReservedCodeCacheSize, (uintx)long_ReservedCodeCacheSize); | |
2365 // -green | |
2366 } else if (match_option(option, "-green", &tail)) { | |
2367 jio_fprintf(defaultStream::error_stream(), | |
2368 "Green threads support not available\n"); | |
2369 return JNI_EINVAL; | |
2370 // -native | |
2371 } else if (match_option(option, "-native", &tail)) { | |
2372 // HotSpot always uses native threads, ignore silently for compatibility | |
2373 // -Xsqnopause | |
2374 } else if (match_option(option, "-Xsqnopause", &tail)) { | |
2375 // EVM option, ignore silently for compatibility | |
2376 // -Xrs | |
2377 } else if (match_option(option, "-Xrs", &tail)) { | |
2378 // Classic/EVM option, new functionality | |
2379 FLAG_SET_CMDLINE(bool, ReduceSignalUsage, true); | |
2380 } else if (match_option(option, "-Xusealtsigs", &tail)) { | |
2381 // change default internal VM signals used - lower case for back compat | |
2382 FLAG_SET_CMDLINE(bool, UseAltSigs, true); | |
2383 // -Xoptimize | |
2384 } else if (match_option(option, "-Xoptimize", &tail)) { | |
2385 // EVM option, ignore silently for compatibility | |
2386 // -Xprof | |
2387 } else if (match_option(option, "-Xprof", &tail)) { | |
2388 #ifndef FPROF_KERNEL | |
2389 _has_profile = true; | |
2390 #else // FPROF_KERNEL | |
2391 // do we have to exit? | |
2392 warning("Kernel VM does not support flat profiling."); | |
2393 #endif // FPROF_KERNEL | |
2394 // -Xaprof | |
2395 } else if (match_option(option, "-Xaprof", &tail)) { | |
2396 _has_alloc_profile = true; | |
2397 // -Xconcurrentio | |
2398 } else if (match_option(option, "-Xconcurrentio", &tail)) { | |
2399 FLAG_SET_CMDLINE(bool, UseLWPSynchronization, true); | |
2400 FLAG_SET_CMDLINE(bool, BackgroundCompilation, false); | |
2401 FLAG_SET_CMDLINE(intx, DeferThrSuspendLoopCount, 1); | |
2402 FLAG_SET_CMDLINE(bool, UseTLAB, false); | |
2403 FLAG_SET_CMDLINE(uintx, NewSizeThreadIncrease, 16 * K); // 20Kb per thread added to new generation | |
2404 | |
2405 // -Xinternalversion | |
2406 } else if (match_option(option, "-Xinternalversion", &tail)) { | |
2407 jio_fprintf(defaultStream::output_stream(), "%s\n", | |
2408 VM_Version::internal_vm_info_string()); | |
2409 vm_exit(0); | |
2410 #ifndef PRODUCT | |
2411 // -Xprintflags | |
2412 } else if (match_option(option, "-Xprintflags", &tail)) { | |
4773 | 2413 CommandLineFlags::printFlags(tty, false); |
0 | 2414 vm_exit(0); |
2415 #endif | |
2416 // -D | |
2417 } else if (match_option(option, "-D", &tail)) { | |
2418 if (!add_property(tail)) { | |
2419 return JNI_ENOMEM; | |
2420 } | |
2421 // Out of the box management support | |
2422 if (match_option(option, "-Dcom.sun.management", &tail)) { | |
2423 FLAG_SET_CMDLINE(bool, ManagementServer, true); | |
2424 } | |
2425 // -Xint | |
2426 } else if (match_option(option, "-Xint", &tail)) { | |
2427 set_mode_flags(_int); | |
2428 // -Xmixed | |
2429 } else if (match_option(option, "-Xmixed", &tail)) { | |
2430 set_mode_flags(_mixed); | |
2431 // -Xcomp | |
2432 } else if (match_option(option, "-Xcomp", &tail)) { | |
2433 // for testing the compiler; turn off all flags that inhibit compilation | |
2434 set_mode_flags(_comp); | |
2435 | |
2436 // -Xshare:dump | |
2437 } else if (match_option(option, "-Xshare:dump", &tail)) { | |
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2438 #if defined(KERNEL) |
0 | 2439 vm_exit_during_initialization( |
2440 "Dumping a shared archive is not supported on the Kernel JVM.", NULL); | |
2441 #else | |
2442 FLAG_SET_CMDLINE(bool, DumpSharedSpaces, true); | |
2443 set_mode_flags(_int); // Prevent compilation, which creates objects | |
2444 #endif | |
2445 // -Xshare:on | |
2446 } else if (match_option(option, "-Xshare:on", &tail)) { | |
2447 FLAG_SET_CMDLINE(bool, UseSharedSpaces, true); | |
2448 FLAG_SET_CMDLINE(bool, RequireSharedSpaces, true); | |
2449 // -Xshare:auto | |
2450 } else if (match_option(option, "-Xshare:auto", &tail)) { | |
2451 FLAG_SET_CMDLINE(bool, UseSharedSpaces, true); | |
2452 FLAG_SET_CMDLINE(bool, RequireSharedSpaces, false); | |
2453 // -Xshare:off | |
2454 } else if (match_option(option, "-Xshare:off", &tail)) { | |
2455 FLAG_SET_CMDLINE(bool, UseSharedSpaces, false); | |
2456 FLAG_SET_CMDLINE(bool, RequireSharedSpaces, false); | |
2457 | |
2458 // -Xverify | |
2459 } else if (match_option(option, "-Xverify", &tail)) { | |
2460 if (strcmp(tail, ":all") == 0 || strcmp(tail, "") == 0) { | |
2461 FLAG_SET_CMDLINE(bool, BytecodeVerificationLocal, true); | |
2462 FLAG_SET_CMDLINE(bool, BytecodeVerificationRemote, true); | |
2463 } else if (strcmp(tail, ":remote") == 0) { | |
2464 FLAG_SET_CMDLINE(bool, BytecodeVerificationLocal, false); | |
2465 FLAG_SET_CMDLINE(bool, BytecodeVerificationRemote, true); | |
2466 } else if (strcmp(tail, ":none") == 0) { | |
2467 FLAG_SET_CMDLINE(bool, BytecodeVerificationLocal, false); | |
2468 FLAG_SET_CMDLINE(bool, BytecodeVerificationRemote, false); | |
2469 } else if (is_bad_option(option, args->ignoreUnrecognized, "verification")) { | |
2470 return JNI_EINVAL; | |
2471 } | |
2472 // -Xdebug | |
2473 } else if (match_option(option, "-Xdebug", &tail)) { | |
2474 // note this flag has been used, then ignore | |
2475 set_xdebug_mode(true); | |
2476 // -Xnoagent | |
2477 } else if (match_option(option, "-Xnoagent", &tail)) { | |
2478 // For compatibility with classic. HotSpot refuses to load the old style agent.dll. | |
2479 } else if (match_option(option, "-Xboundthreads", &tail)) { | |
2480 // Bind user level threads to kernel threads (Solaris only) | |
2481 FLAG_SET_CMDLINE(bool, UseBoundThreads, true); | |
2482 } else if (match_option(option, "-Xloggc:", &tail)) { | |
2483 // Redirect GC output to the file. -Xloggc:<filename> | |
2484 // ostream_init_log(), when called will use this filename | |
2485 // to initialize a fileStream. | |
2486 _gc_log_filename = strdup(tail); | |
2487 FLAG_SET_CMDLINE(bool, PrintGC, true); | |
2488 FLAG_SET_CMDLINE(bool, PrintGCTimeStamps, true); | |
2489 | |
2490 // JNI hooks | |
2491 } else if (match_option(option, "-Xcheck", &tail)) { | |
2492 if (!strcmp(tail, ":jni")) { | |
2493 CheckJNICalls = true; | |
2494 } else if (is_bad_option(option, args->ignoreUnrecognized, | |
2495 "check")) { | |
2496 return JNI_EINVAL; | |
2497 } | |
2498 } else if (match_option(option, "vfprintf", &tail)) { | |
2499 _vfprintf_hook = CAST_TO_FN_PTR(vfprintf_hook_t, option->extraInfo); | |
2500 } else if (match_option(option, "exit", &tail)) { | |
2501 _exit_hook = CAST_TO_FN_PTR(exit_hook_t, option->extraInfo); | |
2502 } else if (match_option(option, "abort", &tail)) { | |
2503 _abort_hook = CAST_TO_FN_PTR(abort_hook_t, option->extraInfo); | |
2504 // -XX:+AggressiveHeap | |
2505 } else if (match_option(option, "-XX:+AggressiveHeap", &tail)) { | |
2506 | |
2507 // This option inspects the machine and attempts to set various | |
2508 // parameters to be optimal for long-running, memory allocation | |
2509 // intensive jobs. It is intended for machines with large | |
2510 // amounts of cpu and memory. | |
2511 | |
2512 // initHeapSize is needed since _initial_heap_size is 4 bytes on a 32 bit | |
2513 // VM, but we may not be able to represent the total physical memory | |
2514 // available (like having 8gb of memory on a box but using a 32bit VM). | |
2515 // Thus, we need to make sure we're using a julong for intermediate | |
2516 // calculations. | |
2517 julong initHeapSize; | |
2518 julong total_memory = os::physical_memory(); | |
2519 | |
2520 if (total_memory < (julong)256*M) { | |
2521 jio_fprintf(defaultStream::error_stream(), | |
2522 "You need at least 256mb of memory to use -XX:+AggressiveHeap\n"); | |
2523 vm_exit(1); | |
2524 } | |
2525 | |
2526 // The heap size is half of available memory, or (at most) | |
2527 // all of possible memory less 160mb (leaving room for the OS | |
2528 // when using ISM). This is the maximum; because adaptive sizing | |
2529 // is turned on below, the actual space used may be smaller. | |
2530 | |
2531 initHeapSize = MIN2(total_memory / (julong)2, | |
2532 total_memory - (julong)160*M); | |
2533 | |
2534 // Make sure that if we have a lot of memory we cap the 32 bit | |
2535 // process space. The 64bit VM version of this function is a nop. | |
2536 initHeapSize = os::allocatable_physical_memory(initHeapSize); | |
2537 | |
2538 if (FLAG_IS_DEFAULT(MaxHeapSize)) { | |
2539 FLAG_SET_CMDLINE(uintx, MaxHeapSize, initHeapSize); | |
1064 | 2540 FLAG_SET_CMDLINE(uintx, InitialHeapSize, initHeapSize); |
0 | 2541 // Currently the minimum size and the initial heap sizes are the same. |
1064 | 2542 set_min_heap_size(initHeapSize); |
0 | 2543 } |
2544 if (FLAG_IS_DEFAULT(NewSize)) { | |
2545 // Make the young generation 3/8ths of the total heap. | |
2546 FLAG_SET_CMDLINE(uintx, NewSize, | |
2547 ((julong)MaxHeapSize / (julong)8) * (julong)3); | |
2548 FLAG_SET_CMDLINE(uintx, MaxNewSize, NewSize); | |
2549 } | |
2550 | |
2551 FLAG_SET_DEFAULT(UseLargePages, true); | |
2552 | |
2553 // Increase some data structure sizes for efficiency | |
2554 FLAG_SET_CMDLINE(uintx, BaseFootPrintEstimate, MaxHeapSize); | |
2555 FLAG_SET_CMDLINE(bool, ResizeTLAB, false); | |
2556 FLAG_SET_CMDLINE(uintx, TLABSize, 256*K); | |
2557 | |
2558 // See the OldPLABSize comment below, but replace 'after promotion' | |
2559 // with 'after copying'. YoungPLABSize is the size of the survivor | |
2560 // space per-gc-thread buffers. The default is 4kw. | |
2561 FLAG_SET_CMDLINE(uintx, YoungPLABSize, 256*K); // Note: this is in words | |
2562 | |
2563 // OldPLABSize is the size of the buffers in the old gen that | |
2564 // UseParallelGC uses to promote live data that doesn't fit in the | |
2565 // survivor spaces. At any given time, there's one for each gc thread. | |
2566 // The default size is 1kw. These buffers are rarely used, since the | |
2567 // survivor spaces are usually big enough. For specjbb, however, there | |
2568 // are occasions when there's lots of live data in the young gen | |
2569 // and we end up promoting some of it. We don't have a definite | |
2570 // explanation for why bumping OldPLABSize helps, but the theory | |
2571 // is that a bigger PLAB results in retaining something like the | |
2572 // original allocation order after promotion, which improves mutator | |
2573 // locality. A minor effect may be that larger PLABs reduce the | |
2574 // number of PLAB allocation events during gc. The value of 8kw | |
2575 // was arrived at by experimenting with specjbb. | |
2576 FLAG_SET_CMDLINE(uintx, OldPLABSize, 8*K); // Note: this is in words | |
2577 | |
2578 // Enable parallel GC and adaptive generation sizing | |
2579 FLAG_SET_CMDLINE(bool, UseParallelGC, true); | |
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2580 FLAG_SET_DEFAULT(ParallelGCThreads, |
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2581 Abstract_VM_Version::parallel_worker_threads()); |
0 | 2582 |
2583 // Encourage steady state memory management | |
2584 FLAG_SET_CMDLINE(uintx, ThresholdTolerance, 100); | |
2585 | |
2586 // This appears to improve mutator locality | |
2587 FLAG_SET_CMDLINE(bool, ScavengeBeforeFullGC, false); | |
2588 | |
2589 // Get around early Solaris scheduling bug | |
2590 // (affinity vs other jobs on system) | |
2591 // but disallow DR and offlining (5008695). | |
2592 FLAG_SET_CMDLINE(bool, BindGCTaskThreadsToCPUs, true); | |
2593 | |
2594 } else if (match_option(option, "-XX:+NeverTenure", &tail)) { | |
2595 // The last option must always win. | |
2596 FLAG_SET_CMDLINE(bool, AlwaysTenure, false); | |
2597 FLAG_SET_CMDLINE(bool, NeverTenure, true); | |
2598 } else if (match_option(option, "-XX:+AlwaysTenure", &tail)) { | |
2599 // The last option must always win. | |
2600 FLAG_SET_CMDLINE(bool, NeverTenure, false); | |
2601 FLAG_SET_CMDLINE(bool, AlwaysTenure, true); | |
2602 } else if (match_option(option, "-XX:+CMSPermGenSweepingEnabled", &tail) || | |
2603 match_option(option, "-XX:-CMSPermGenSweepingEnabled", &tail)) { | |
2604 jio_fprintf(defaultStream::error_stream(), | |
2605 "Please use CMSClassUnloadingEnabled in place of " | |
2606 "CMSPermGenSweepingEnabled in the future\n"); | |
2607 } else if (match_option(option, "-XX:+UseGCTimeLimit", &tail)) { | |
2608 FLAG_SET_CMDLINE(bool, UseGCOverheadLimit, true); | |
2609 jio_fprintf(defaultStream::error_stream(), | |
2610 "Please use -XX:+UseGCOverheadLimit in place of " | |
2611 "-XX:+UseGCTimeLimit in the future\n"); | |
2612 } else if (match_option(option, "-XX:-UseGCTimeLimit", &tail)) { | |
2613 FLAG_SET_CMDLINE(bool, UseGCOverheadLimit, false); | |
2614 jio_fprintf(defaultStream::error_stream(), | |
2615 "Please use -XX:-UseGCOverheadLimit in place of " | |
2616 "-XX:-UseGCTimeLimit in the future\n"); | |
2617 // The TLE options are for compatibility with 1.3 and will be | |
2618 // removed without notice in a future release. These options | |
2619 // are not to be documented. | |
2620 } else if (match_option(option, "-XX:MaxTLERatio=", &tail)) { | |
2621 // No longer used. | |
2622 } else if (match_option(option, "-XX:+ResizeTLE", &tail)) { | |
2623 FLAG_SET_CMDLINE(bool, ResizeTLAB, true); | |
2624 } else if (match_option(option, "-XX:-ResizeTLE", &tail)) { | |
2625 FLAG_SET_CMDLINE(bool, ResizeTLAB, false); | |
2626 } else if (match_option(option, "-XX:+PrintTLE", &tail)) { | |
2627 FLAG_SET_CMDLINE(bool, PrintTLAB, true); | |
2628 } else if (match_option(option, "-XX:-PrintTLE", &tail)) { | |
2629 FLAG_SET_CMDLINE(bool, PrintTLAB, false); | |
2630 } else if (match_option(option, "-XX:TLEFragmentationRatio=", &tail)) { | |
2631 // No longer used. | |
2632 } else if (match_option(option, "-XX:TLESize=", &tail)) { | |
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|
2633 julong long_tlab_size = 0; |
0 | 2634 ArgsRange errcode = parse_memory_size(tail, &long_tlab_size, 1); |
2635 if (errcode != arg_in_range) { | |
2636 jio_fprintf(defaultStream::error_stream(), | |
2637 "Invalid TLAB size: %s\n", option->optionString); | |
2638 describe_range_error(errcode); | |
2639 return JNI_EINVAL; | |
2640 } | |
2641 FLAG_SET_CMDLINE(uintx, TLABSize, long_tlab_size); | |
2642 } else if (match_option(option, "-XX:TLEThreadRatio=", &tail)) { | |
2643 // No longer used. | |
2644 } else if (match_option(option, "-XX:+UseTLE", &tail)) { | |
2645 FLAG_SET_CMDLINE(bool, UseTLAB, true); | |
2646 } else if (match_option(option, "-XX:-UseTLE", &tail)) { | |
2647 FLAG_SET_CMDLINE(bool, UseTLAB, false); | |
2648 SOLARIS_ONLY( | |
2649 } else if (match_option(option, "-XX:+UsePermISM", &tail)) { | |
2650 warning("-XX:+UsePermISM is obsolete."); | |
2651 FLAG_SET_CMDLINE(bool, UseISM, true); | |
2652 } else if (match_option(option, "-XX:-UsePermISM", &tail)) { | |
2653 FLAG_SET_CMDLINE(bool, UseISM, false); | |
2654 ) | |
2655 } else if (match_option(option, "-XX:+DisplayVMOutputToStderr", &tail)) { | |
2656 FLAG_SET_CMDLINE(bool, DisplayVMOutputToStdout, false); | |
2657 FLAG_SET_CMDLINE(bool, DisplayVMOutputToStderr, true); | |
2658 } else if (match_option(option, "-XX:+DisplayVMOutputToStdout", &tail)) { | |
2659 FLAG_SET_CMDLINE(bool, DisplayVMOutputToStderr, false); | |
2660 FLAG_SET_CMDLINE(bool, DisplayVMOutputToStdout, true); | |
2661 } else if (match_option(option, "-XX:+ExtendedDTraceProbes", &tail)) { | |
4006 | 2662 #if defined(DTRACE_ENABLED) |
0 | 2663 FLAG_SET_CMDLINE(bool, ExtendedDTraceProbes, true); |
2664 FLAG_SET_CMDLINE(bool, DTraceMethodProbes, true); | |
2665 FLAG_SET_CMDLINE(bool, DTraceAllocProbes, true); | |
2666 FLAG_SET_CMDLINE(bool, DTraceMonitorProbes, true); | |
4006 | 2667 #else // defined(DTRACE_ENABLED) |
0 | 2668 jio_fprintf(defaultStream::error_stream(), |
4006 | 2669 "ExtendedDTraceProbes flag is not applicable for this configuration\n"); |
0 | 2670 return JNI_EINVAL; |
4006 | 2671 #endif // defined(DTRACE_ENABLED) |
0 | 2672 #ifdef ASSERT |
1145
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|
2673 } else if (match_option(option, "-XX:+FullGCALot", &tail)) { |
0 | 2674 FLAG_SET_CMDLINE(bool, FullGCALot, true); |
2675 // disable scavenge before parallel mark-compact | |
2676 FLAG_SET_CMDLINE(bool, ScavengeBeforeFullGC, false); | |
2677 #endif | |
1145
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diff
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|
2678 } else if (match_option(option, "-XX:CMSParPromoteBlocksToClaim=", &tail)) { |
0 | 2679 julong cms_blocks_to_claim = (julong)atol(tail); |
2680 FLAG_SET_CMDLINE(uintx, CMSParPromoteBlocksToClaim, cms_blocks_to_claim); | |
2681 jio_fprintf(defaultStream::error_stream(), | |
1145
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1074
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|
2682 "Please use -XX:OldPLABSize in place of " |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
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1074
diff
changeset
|
2683 "-XX:CMSParPromoteBlocksToClaim in the future\n"); |
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6631166: CMS: better heuristics when combatting fragmentation
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diff
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|
2684 } else if (match_option(option, "-XX:ParCMSPromoteBlocksToClaim=", &tail)) { |
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6631166: CMS: better heuristics when combatting fragmentation
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1074
diff
changeset
|
2685 julong cms_blocks_to_claim = (julong)atol(tail); |
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6631166: CMS: better heuristics when combatting fragmentation
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1074
diff
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|
2686 FLAG_SET_CMDLINE(uintx, CMSParPromoteBlocksToClaim, cms_blocks_to_claim); |
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6631166: CMS: better heuristics when combatting fragmentation
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diff
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|
2687 jio_fprintf(defaultStream::error_stream(), |
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6631166: CMS: better heuristics when combatting fragmentation
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diff
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|
2688 "Please use -XX:OldPLABSize in place of " |
0 | 2689 "-XX:ParCMSPromoteBlocksToClaim in the future\n"); |
1145
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diff
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|
2690 } else if (match_option(option, "-XX:ParallelGCOldGenAllocBufferSize=", &tail)) { |
489
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diff
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|
2691 julong old_plab_size = 0; |
0 | 2692 ArgsRange errcode = parse_memory_size(tail, &old_plab_size, 1); |
2693 if (errcode != arg_in_range) { | |
2694 jio_fprintf(defaultStream::error_stream(), | |
2695 "Invalid old PLAB size: %s\n", option->optionString); | |
2696 describe_range_error(errcode); | |
2697 return JNI_EINVAL; | |
2698 } | |
489
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swamyv
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diff
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|
2699 FLAG_SET_CMDLINE(uintx, OldPLABSize, old_plab_size); |
0 | 2700 jio_fprintf(defaultStream::error_stream(), |
2701 "Please use -XX:OldPLABSize in place of " | |
2702 "-XX:ParallelGCOldGenAllocBufferSize in the future\n"); | |
1145
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parents:
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diff
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|
2703 } else if (match_option(option, "-XX:ParallelGCToSpaceAllocBufferSize=", &tail)) { |
489
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6653214: MemoryPoolMXBean.setUsageThreshold() does not support large heap sizes.
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diff
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|
2704 julong young_plab_size = 0; |
0 | 2705 ArgsRange errcode = parse_memory_size(tail, &young_plab_size, 1); |
2706 if (errcode != arg_in_range) { | |
2707 jio_fprintf(defaultStream::error_stream(), | |
2708 "Invalid young PLAB size: %s\n", option->optionString); | |
2709 describe_range_error(errcode); | |
2710 return JNI_EINVAL; | |
2711 } | |
489
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6653214: MemoryPoolMXBean.setUsageThreshold() does not support large heap sizes.
swamyv
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483
diff
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|
2712 FLAG_SET_CMDLINE(uintx, YoungPLABSize, young_plab_size); |
0 | 2713 jio_fprintf(defaultStream::error_stream(), |
2714 "Please use -XX:YoungPLABSize in place of " | |
2715 "-XX:ParallelGCToSpaceAllocBufferSize in the future\n"); | |
1284 | 2716 } else if (match_option(option, "-XX:CMSMarkStackSize=", &tail) || |
2717 match_option(option, "-XX:G1MarkStackSize=", &tail)) { | |
2718 julong stack_size = 0; | |
2719 ArgsRange errcode = parse_memory_size(tail, &stack_size, 1); | |
2720 if (errcode != arg_in_range) { | |
2721 jio_fprintf(defaultStream::error_stream(), | |
2722 "Invalid mark stack size: %s\n", option->optionString); | |
2723 describe_range_error(errcode); | |
2724 return JNI_EINVAL; | |
2725 } | |
2726 FLAG_SET_CMDLINE(uintx, MarkStackSize, stack_size); | |
2727 } else if (match_option(option, "-XX:CMSMarkStackSizeMax=", &tail)) { | |
2728 julong max_stack_size = 0; | |
2729 ArgsRange errcode = parse_memory_size(tail, &max_stack_size, 1); | |
2730 if (errcode != arg_in_range) { | |
2731 jio_fprintf(defaultStream::error_stream(), | |
2732 "Invalid maximum mark stack size: %s\n", | |
2733 option->optionString); | |
2734 describe_range_error(errcode); | |
2735 return JNI_EINVAL; | |
2736 } | |
2737 FLAG_SET_CMDLINE(uintx, MarkStackSizeMax, max_stack_size); | |
2738 } else if (match_option(option, "-XX:ParallelMarkingThreads=", &tail) || | |
2739 match_option(option, "-XX:ParallelCMSThreads=", &tail)) { | |
2740 uintx conc_threads = 0; | |
2741 if (!parse_uintx(tail, &conc_threads, 1)) { | |
2742 jio_fprintf(defaultStream::error_stream(), | |
2743 "Invalid concurrent threads: %s\n", option->optionString); | |
2744 return JNI_EINVAL; | |
2745 } | |
2746 FLAG_SET_CMDLINE(uintx, ConcGCThreads, conc_threads); | |
6199
3f1ab0c19c30
7179383: MaxDirectMemorySize argument parsing is broken for values >2G
dholmes
parents:
6198
diff
changeset
|
2747 } else if (match_option(option, "-XX:MaxDirectMemorySize=", &tail)) { |
3f1ab0c19c30
7179383: MaxDirectMemorySize argument parsing is broken for values >2G
dholmes
parents:
6198
diff
changeset
|
2748 julong max_direct_memory_size = 0; |
3f1ab0c19c30
7179383: MaxDirectMemorySize argument parsing is broken for values >2G
dholmes
parents:
6198
diff
changeset
|
2749 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
|
2750 if (errcode != arg_in_range) { |
3f1ab0c19c30
7179383: MaxDirectMemorySize argument parsing is broken for values >2G
dholmes
parents:
6198
diff
changeset
|
2751 jio_fprintf(defaultStream::error_stream(), |
3f1ab0c19c30
7179383: MaxDirectMemorySize argument parsing is broken for values >2G
dholmes
parents:
6198
diff
changeset
|
2752 "Invalid maximum direct memory size: %s\n", |
3f1ab0c19c30
7179383: MaxDirectMemorySize argument parsing is broken for values >2G
dholmes
parents:
6198
diff
changeset
|
2753 option->optionString); |
3f1ab0c19c30
7179383: MaxDirectMemorySize argument parsing is broken for values >2G
dholmes
parents:
6198
diff
changeset
|
2754 describe_range_error(errcode); |
3f1ab0c19c30
7179383: MaxDirectMemorySize argument parsing is broken for values >2G
dholmes
parents:
6198
diff
changeset
|
2755 return JNI_EINVAL; |
3f1ab0c19c30
7179383: MaxDirectMemorySize argument parsing is broken for values >2G
dholmes
parents:
6198
diff
changeset
|
2756 } |
3f1ab0c19c30
7179383: MaxDirectMemorySize argument parsing is broken for values >2G
dholmes
parents:
6198
diff
changeset
|
2757 FLAG_SET_CMDLINE(uintx, MaxDirectMemorySize, max_direct_memory_size); |
1145
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6631166: CMS: better heuristics when combatting fragmentation
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parents:
1074
diff
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|
2758 } else if (match_option(option, "-XX:", &tail)) { // -XX:xxxx |
0 | 2759 // Skip -XX:Flags= since that case has already been handled |
2760 if (strncmp(tail, "Flags=", strlen("Flags=")) != 0) { | |
2761 if (!process_argument(tail, args->ignoreUnrecognized, origin)) { | |
2762 return JNI_EINVAL; | |
2763 } | |
2764 } | |
2765 // Unknown option | |
2766 } else if (is_bad_option(option, args->ignoreUnrecognized)) { | |
2767 return JNI_ERR; | |
2768 } | |
2769 } | |
3767
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3349
diff
changeset
|
2770 |
449
171e581e8161
6554406: Change switch UseVMInterruptibleIO default to false (sol)
xlu
parents:
420
diff
changeset
|
2771 // 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
|
2772 // when working with older JDKs. |
171e581e8161
6554406: Change switch UseVMInterruptibleIO default to false (sol)
xlu
parents:
420
diff
changeset
|
2773 if (JDK_Version::current().compare_major(6) <= 0 && |
171e581e8161
6554406: Change switch UseVMInterruptibleIO default to false (sol)
xlu
parents:
420
diff
changeset
|
2774 FLAG_IS_DEFAULT(UseVMInterruptibleIO)) { |
171e581e8161
6554406: Change switch UseVMInterruptibleIO default to false (sol)
xlu
parents:
420
diff
changeset
|
2775 FLAG_SET_DEFAULT(UseVMInterruptibleIO, true); |
171e581e8161
6554406: Change switch UseVMInterruptibleIO default to false (sol)
xlu
parents:
420
diff
changeset
|
2776 } |
1679
3d90023429ec
6888526: Linux getCurrentThreadCpuTime is drastically slower than Windows
aph
parents:
1628
diff
changeset
|
2777 #ifdef LINUX |
3d90023429ec
6888526: Linux getCurrentThreadCpuTime is drastically slower than Windows
aph
parents:
1628
diff
changeset
|
2778 if (JDK_Version::current().compare_major(6) <= 0 && |
3d90023429ec
6888526: Linux getCurrentThreadCpuTime is drastically slower than Windows
aph
parents:
1628
diff
changeset
|
2779 FLAG_IS_DEFAULT(UseLinuxPosixThreadCPUClocks)) { |
3d90023429ec
6888526: Linux getCurrentThreadCpuTime is drastically slower than Windows
aph
parents:
1628
diff
changeset
|
2780 FLAG_SET_DEFAULT(UseLinuxPosixThreadCPUClocks, false); |
3d90023429ec
6888526: Linux getCurrentThreadCpuTime is drastically slower than Windows
aph
parents:
1628
diff
changeset
|
2781 } |
3d90023429ec
6888526: Linux getCurrentThreadCpuTime is drastically slower than Windows
aph
parents:
1628
diff
changeset
|
2782 #endif // LINUX |
0 | 2783 return JNI_OK; |
2784 } | |
2785 | |
2786 jint Arguments::finalize_vm_init_args(SysClassPath* scp_p, bool scp_assembly_required) { | |
2787 // This must be done after all -D arguments have been processed. | |
2788 scp_p->expand_endorsed(); | |
2789 | |
2790 if (scp_assembly_required || scp_p->get_endorsed() != NULL) { | |
2791 // Assemble the bootclasspath elements into the final path. | |
2792 Arguments::set_sysclasspath(scp_p->combined_path()); | |
2793 } | |
2794 | |
2795 // This must be done after all arguments have been processed. | |
2796 // java_compiler() true means set to "NONE" or empty. | |
2797 if (java_compiler() && !xdebug_mode()) { | |
2798 // For backwards compatibility, we switch to interpreted mode if | |
2799 // -Djava.compiler="NONE" or "" is specified AND "-Xdebug" was | |
2800 // not specified. | |
2801 set_mode_flags(_int); | |
2802 } | |
2803 if (CompileThreshold == 0) { | |
2804 set_mode_flags(_int); | |
2805 } | |
2806 | |
2807 #ifndef COMPILER2 | |
2808 // Don't degrade server performance for footprint | |
2809 if (FLAG_IS_DEFAULT(UseLargePages) && | |
2810 MaxHeapSize < LargePageHeapSizeThreshold) { | |
2811 // No need for large granularity pages w/small heaps. | |
2812 // Note that large pages are enabled/disabled for both the | |
2813 // Java heap and the code cache. | |
2814 FLAG_SET_DEFAULT(UseLargePages, false); | |
2815 SOLARIS_ONLY(FLAG_SET_DEFAULT(UseMPSS, false)); | |
2816 SOLARIS_ONLY(FLAG_SET_DEFAULT(UseISM, false)); | |
2817 } | |
342
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
135
diff
changeset
|
2818 |
1251
576e77447e3c
6923002: assert(false,"this call site should not be polymorphic")
kvn
parents:
1188
diff
changeset
|
2819 // Tiered compilation is undefined with C1. |
576e77447e3c
6923002: assert(false,"this call site should not be polymorphic")
kvn
parents:
1188
diff
changeset
|
2820 TieredCompilation = false; |
0 | 2821 #else |
2822 if (!FLAG_IS_DEFAULT(OptoLoopAlignment) && FLAG_IS_DEFAULT(MaxLoopPad)) { | |
2823 FLAG_SET_DEFAULT(MaxLoopPad, OptoLoopAlignment-1); | |
2824 } | |
2825 #endif | |
2826 | |
1681
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2827 // 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
|
2828 // to be true unless the property has already been set. |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2829 // 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
|
2830 if (os::is_headless_jre()) { |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2831 const char* headless = Arguments::get_property("java.awt.headless"); |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2832 if (headless == NULL) { |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2833 char envbuffer[128]; |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2834 if (!os::getenv("JAVA_AWT_HEADLESS", envbuffer, sizeof(envbuffer))) { |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2835 if (!add_property("java.awt.headless=true")) { |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2836 return JNI_ENOMEM; |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2837 } |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2838 } else { |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2839 char buffer[256]; |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2840 strcpy(buffer, "java.awt.headless="); |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2841 strcat(buffer, envbuffer); |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2842 if (!add_property(buffer)) { |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2843 return JNI_ENOMEM; |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2844 } |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2845 } |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2846 } |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
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parents:
1679
diff
changeset
|
2847 } |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
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1679
diff
changeset
|
2848 |
0 | 2849 if (!check_vm_args_consistency()) { |
2850 return JNI_ERR; | |
2851 } | |
2852 | |
2853 return JNI_OK; | |
2854 } | |
2855 | |
2856 jint Arguments::parse_java_options_environment_variable(SysClassPath* scp_p, bool* scp_assembly_required_p) { | |
2857 return parse_options_environment_variable("_JAVA_OPTIONS", scp_p, | |
2858 scp_assembly_required_p); | |
2859 } | |
2860 | |
2861 jint Arguments::parse_java_tool_options_environment_variable(SysClassPath* scp_p, bool* scp_assembly_required_p) { | |
2862 return parse_options_environment_variable("JAVA_TOOL_OPTIONS", scp_p, | |
2863 scp_assembly_required_p); | |
2864 } | |
2865 | |
2866 jint Arguments::parse_options_environment_variable(const char* name, SysClassPath* scp_p, bool* scp_assembly_required_p) { | |
2867 const int N_MAX_OPTIONS = 64; | |
2868 const int OPTION_BUFFER_SIZE = 1024; | |
2869 char buffer[OPTION_BUFFER_SIZE]; | |
2870 | |
2871 // The variable will be ignored if it exceeds the length of the buffer. | |
2872 // Don't check this variable if user has special privileges | |
2873 // (e.g. unix su command). | |
2874 if (os::getenv(name, buffer, sizeof(buffer)) && | |
2875 !os::have_special_privileges()) { | |
2876 JavaVMOption options[N_MAX_OPTIONS]; // Construct option array | |
2877 jio_fprintf(defaultStream::error_stream(), | |
2878 "Picked up %s: %s\n", name, buffer); | |
2879 char* rd = buffer; // pointer to the input string (rd) | |
2880 int i; | |
2881 for (i = 0; i < N_MAX_OPTIONS;) { // repeat for all options in the input string | |
2882 while (isspace(*rd)) rd++; // skip whitespace | |
2883 if (*rd == 0) break; // we re done when the input string is read completely | |
2884 | |
2885 // The output, option string, overwrites the input string. | |
2886 // Because of quoting, the pointer to the option string (wrt) may lag the pointer to | |
2887 // input string (rd). | |
2888 char* wrt = rd; | |
2889 | |
2890 options[i++].optionString = wrt; // Fill in option | |
2891 while (*rd != 0 && !isspace(*rd)) { // unquoted strings terminate with a space or NULL | |
2892 if (*rd == '\'' || *rd == '"') { // handle a quoted string | |
2893 int quote = *rd; // matching quote to look for | |
2894 rd++; // don't copy open quote | |
2895 while (*rd != quote) { // include everything (even spaces) up until quote | |
2896 if (*rd == 0) { // string termination means unmatched string | |
2897 jio_fprintf(defaultStream::error_stream(), | |
2898 "Unmatched quote in %s\n", name); | |
2899 return JNI_ERR; | |
2900 } | |
2901 *wrt++ = *rd++; // copy to option string | |
2902 } | |
2903 rd++; // don't copy close quote | |
2904 } else { | |
2905 *wrt++ = *rd++; // copy to option string | |
2906 } | |
2907 } | |
2908 // Need to check if we're done before writing a NULL, | |
2909 // because the write could be to the byte that rd is pointing to. | |
2910 if (*rd++ == 0) { | |
2911 *wrt = 0; | |
2912 break; | |
2913 } | |
2914 *wrt = 0; // Zero terminate option | |
2915 } | |
2916 // Construct JavaVMInitArgs structure and parse as if it was part of the command line | |
2917 JavaVMInitArgs vm_args; | |
2918 vm_args.version = JNI_VERSION_1_2; | |
2919 vm_args.options = options; | |
2920 vm_args.nOptions = i; | |
564 | 2921 vm_args.ignoreUnrecognized = IgnoreUnrecognizedVMOptions; |
0 | 2922 |
2923 if (PrintVMOptions) { | |
2924 const char* tail; | |
2925 for (int i = 0; i < vm_args.nOptions; i++) { | |
2926 const JavaVMOption *option = vm_args.options + i; | |
2927 if (match_option(option, "-XX:", &tail)) { | |
2928 logOption(tail); | |
2929 } | |
2930 } | |
2931 } | |
2932 | |
2933 return(parse_each_vm_init_arg(&vm_args, scp_p, scp_assembly_required_p, ENVIRON_VAR)); | |
2934 } | |
2935 return JNI_OK; | |
2936 } | |
2937 | |
2362
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|
2938 void Arguments::set_shared_spaces_flags() { |
2378 | 2939 const bool must_share = DumpSharedSpaces || RequireSharedSpaces; |
2940 const bool might_share = must_share || UseSharedSpaces; | |
2941 | |
6725
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|
2942 // CompressedOops cannot be used with CDS. The offsets of oopmaps and |
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|
2943 // static fields are incorrect in the archive. With some more clever |
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|
2944 // initialization, this restriction can probably be lifted. |
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|
2945 // ??? UseLargePages might be okay now |
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|
2946 const bool cannot_share = UseCompressedOops || |
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2947 (UseLargePages && FLAG_IS_CMDLINE(UseLargePages)); |
2362
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|
2948 if (cannot_share) { |
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|
2949 if (must_share) { |
6736
11fb740ce98f
7196103: NPG: Unable to allocate bit map for parallel garbage collection for the requested heap size
coleenp
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diff
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|
2950 warning("disabling large pages %s" |
2378 | 2951 "because of %s", "" LP64_ONLY("and compressed oops "), |
2952 DumpSharedSpaces ? "-Xshare:dump" : "-Xshare:on"); | |
2953 FLAG_SET_CMDLINE(bool, UseLargePages, false); | |
2954 LP64_ONLY(FLAG_SET_CMDLINE(bool, UseCompressedOops, false)); | |
6725
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2955 LP64_ONLY(FLAG_SET_CMDLINE(bool, UseCompressedKlassPointers, false)); |
2362
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|
2956 } else { |
6725
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|
2957 // Prefer compressed oops and large pages to class data sharing |
2362
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|
2958 if (UseSharedSpaces && Verbose) { |
6725
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|
2959 warning("turning off use of shared archive because of large pages%s", |
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2960 "" LP64_ONLY(" and/or compressed oops")); |
2362
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|
2961 } |
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|
2962 no_shared_spaces(); |
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|
2963 } |
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|
2964 } else if (UseLargePages && might_share) { |
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|
2965 // Disable large pages to allow shared spaces. This is sub-optimal, since |
a2c2eac1ca62
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|
2966 // there may not even be a shared archive to use. |
a2c2eac1ca62
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diff
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|
2967 FLAG_SET_DEFAULT(UseLargePages, false); |
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diff
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|
2968 } |
6725
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|
2969 |
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|
2970 // Add 2M to any size for SharedReadOnlySize to get around the JPRT setting |
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|
2971 if (DumpSharedSpaces && !FLAG_IS_DEFAULT(SharedReadOnlySize)) { |
da91efe96a93
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|
2972 SharedReadOnlySize = 14*M; |
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diff
changeset
|
2973 } |
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|
2974 |
da91efe96a93
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|
2975 if (DumpSharedSpaces) { |
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coleenp
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diff
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|
2976 if (RequireSharedSpaces) { |
da91efe96a93
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diff
changeset
|
2977 warning("cannot dump shared archive while using shared archive"); |
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coleenp
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diff
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|
2978 } |
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coleenp
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diff
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|
2979 UseSharedSpaces = false; |
da91efe96a93
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|
2980 } |
2362
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diff
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|
2981 } |
1891
9de67bf4244d
6996136: VM crash in src/share/vm/runtime/virtualspace.cpp:424
iveresov
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1890
diff
changeset
|
2982 |
3797
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3769
diff
changeset
|
2983 // Disable options not supported in this release, with a warning if they |
eb94b7226b7a
7061192: option handling adjustments for oracle and embedded builds
jcoomes
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diff
changeset
|
2984 // were explicitly requested on the command-line |
eb94b7226b7a
7061192: option handling adjustments for oracle and embedded builds
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3769
diff
changeset
|
2985 #define UNSUPPORTED_OPTION(opt, description) \ |
eb94b7226b7a
7061192: option handling adjustments for oracle and embedded builds
jcoomes
parents:
3769
diff
changeset
|
2986 do { \ |
eb94b7226b7a
7061192: option handling adjustments for oracle and embedded builds
jcoomes
parents:
3769
diff
changeset
|
2987 if (opt) { \ |
eb94b7226b7a
7061192: option handling adjustments for oracle and embedded builds
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diff
changeset
|
2988 if (FLAG_IS_CMDLINE(opt)) { \ |
eb94b7226b7a
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diff
changeset
|
2989 warning(description " is disabled in this release."); \ |
eb94b7226b7a
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changeset
|
2990 } \ |
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7061192: option handling adjustments for oracle and embedded builds
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diff
changeset
|
2991 FLAG_SET_DEFAULT(opt, false); \ |
eb94b7226b7a
7061192: option handling adjustments for oracle and embedded builds
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diff
changeset
|
2992 } \ |
eb94b7226b7a
7061192: option handling adjustments for oracle and embedded builds
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diff
changeset
|
2993 } while(0) |
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|
2994 |
0 | 2995 // Parse entry point called from JNI_CreateJavaVM |
2996 | |
2997 jint Arguments::parse(const JavaVMInitArgs* args) { | |
2998 | |
2999 // Sharing support | |
3000 // Construct the path to the archive | |
3001 char jvm_path[JVM_MAXPATHLEN]; | |
3002 os::jvm_path(jvm_path, sizeof(jvm_path)); | |
3003 char *end = strrchr(jvm_path, *os::file_separator()); | |
3004 if (end != NULL) *end = '\0'; | |
3005 char *shared_archive_path = NEW_C_HEAP_ARRAY(char, strlen(jvm_path) + | |
6197 | 3006 strlen(os::file_separator()) + 20, mtInternal); |
0 | 3007 if (shared_archive_path == NULL) return JNI_ENOMEM; |
3008 strcpy(shared_archive_path, jvm_path); | |
3009 strcat(shared_archive_path, os::file_separator()); | |
3010 strcat(shared_archive_path, "classes"); | |
3011 DEBUG_ONLY(strcat(shared_archive_path, "_g");) | |
3012 strcat(shared_archive_path, ".jsa"); | |
3013 SharedArchivePath = shared_archive_path; | |
3014 | |
3015 // Remaining part of option string | |
3016 const char* tail; | |
3017 | |
3018 // If flag "-XX:Flags=flags-file" is used it will be the first option to be processed. | |
6196
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7167142: Consider a warning when finding a .hotspotrc or .hotspot_compiler file that isn't used
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diff
changeset
|
3019 const char* hotspotrc = ".hotspotrc"; |
0 | 3020 bool settings_file_specified = false; |
6196
3759236eea14
7167142: Consider a warning when finding a .hotspotrc or .hotspot_compiler file that isn't used
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diff
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|
3021 bool needs_hotspotrc_warning = false; |
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|
3022 |
564 | 3023 const char* flags_file; |
0 | 3024 int index; |
3025 for (index = 0; index < args->nOptions; index++) { | |
3026 const JavaVMOption *option = args->options + index; | |
3027 if (match_option(option, "-XX:Flags=", &tail)) { | |
564 | 3028 flags_file = tail; |
0 | 3029 settings_file_specified = true; |
3030 } | |
3031 if (match_option(option, "-XX:+PrintVMOptions", &tail)) { | |
3032 PrintVMOptions = true; | |
3033 } | |
253
b0fe4deeb9fb
6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.")
kvn
parents:
196
diff
changeset
|
3034 if (match_option(option, "-XX:-PrintVMOptions", &tail)) { |
b0fe4deeb9fb
6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.")
kvn
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196
diff
changeset
|
3035 PrintVMOptions = false; |
b0fe4deeb9fb
6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.")
kvn
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196
diff
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|
3036 } |
564 | 3037 if (match_option(option, "-XX:+IgnoreUnrecognizedVMOptions", &tail)) { |
3038 IgnoreUnrecognizedVMOptions = true; | |
3039 } | |
3040 if (match_option(option, "-XX:-IgnoreUnrecognizedVMOptions", &tail)) { | |
3041 IgnoreUnrecognizedVMOptions = false; | |
3042 } | |
1150 | 3043 if (match_option(option, "-XX:+PrintFlagsInitial", &tail)) { |
4773 | 3044 CommandLineFlags::printFlags(tty, false); |
1150 | 3045 vm_exit(0); |
3046 } | |
6197 | 3047 if (match_option(option, "-XX:NativeMemoryTracking", &tail)) { |
3048 MemTracker::init_tracking_options(tail); | |
3049 } | |
3050 | |
1768
6ee479178066
6979444: add command line option to print command line flags descriptions
ikrylov
parents:
1745
diff
changeset
|
3051 |
6ee479178066
6979444: add command line option to print command line flags descriptions
ikrylov
parents:
1745
diff
changeset
|
3052 #ifndef PRODUCT |
6ee479178066
6979444: add command line option to print command line flags descriptions
ikrylov
parents:
1745
diff
changeset
|
3053 if (match_option(option, "-XX:+PrintFlagsWithComments", &tail)) { |
4773 | 3054 CommandLineFlags::printFlags(tty, true); |
1768
6ee479178066
6979444: add command line option to print command line flags descriptions
ikrylov
parents:
1745
diff
changeset
|
3055 vm_exit(0); |
6ee479178066
6979444: add command line option to print command line flags descriptions
ikrylov
parents:
1745
diff
changeset
|
3056 } |
6ee479178066
6979444: add command line option to print command line flags descriptions
ikrylov
parents:
1745
diff
changeset
|
3057 #endif |
564 | 3058 } |
3059 | |
3060 if (IgnoreUnrecognizedVMOptions) { | |
3061 // uncast const to modify the flag args->ignoreUnrecognized | |
3062 *(jboolean*)(&args->ignoreUnrecognized) = true; | |
3063 } | |
3064 | |
3065 // Parse specified settings file | |
3066 if (settings_file_specified) { | |
3067 if (!process_settings_file(flags_file, true, args->ignoreUnrecognized)) { | |
3068 return JNI_EINVAL; | |
3069 } | |
6196
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kamg
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diff
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|
3070 } else { |
6150
1e76463170b3
7110720: Issue with vm config file loadingIssue with vm config file loading
kamg
parents:
4780
diff
changeset
|
3071 #ifdef ASSERT |
6196
3759236eea14
7167142: Consider a warning when finding a .hotspotrc or .hotspot_compiler file that isn't used
kamg
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diff
changeset
|
3072 // Parse default .hotspotrc settings file |
0 | 3073 if (!process_settings_file(".hotspotrc", false, args->ignoreUnrecognized)) { |
3074 return JNI_EINVAL; | |
3075 } | |
6196
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7167142: Consider a warning when finding a .hotspotrc or .hotspot_compiler file that isn't used
kamg
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|
3076 #else |
3759236eea14
7167142: Consider a warning when finding a .hotspotrc or .hotspot_compiler file that isn't used
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diff
changeset
|
3077 struct stat buf; |
3759236eea14
7167142: Consider a warning when finding a .hotspotrc or .hotspot_compiler file that isn't used
kamg
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6158
diff
changeset
|
3078 if (os::stat(hotspotrc, &buf) == 0) { |
3759236eea14
7167142: Consider a warning when finding a .hotspotrc or .hotspot_compiler file that isn't used
kamg
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diff
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|
3079 needs_hotspotrc_warning = true; |
3759236eea14
7167142: Consider a warning when finding a .hotspotrc or .hotspot_compiler file that isn't used
kamg
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|
3080 } |
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changeset
|
3081 #endif |
0 | 3082 } |
3083 | |
3084 if (PrintVMOptions) { | |
3085 for (index = 0; index < args->nOptions; index++) { | |
3086 const JavaVMOption *option = args->options + index; | |
3087 if (match_option(option, "-XX:", &tail)) { | |
3088 logOption(tail); | |
3089 } | |
3090 } | |
3091 } | |
3092 | |
3093 // Parse JavaVMInitArgs structure passed in, as well as JAVA_TOOL_OPTIONS and _JAVA_OPTIONS | |
3094 jint result = parse_vm_init_args(args); | |
3095 if (result != JNI_OK) { | |
3096 return result; | |
3097 } | |
3098 | |
6196
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kamg
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|
3099 // Delay warning until here so that we've had a chance to process |
3759236eea14
7167142: Consider a warning when finding a .hotspotrc or .hotspot_compiler file that isn't used
kamg
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|
3100 // the -XX:-PrintWarnings flag |
3759236eea14
7167142: Consider a warning when finding a .hotspotrc or .hotspot_compiler file that isn't used
kamg
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6158
diff
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|
3101 if (needs_hotspotrc_warning) { |
3759236eea14
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kamg
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|
3102 warning("%s file is present but has been ignored. " |
3759236eea14
7167142: Consider a warning when finding a .hotspotrc or .hotspot_compiler file that isn't used
kamg
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|
3103 "Run with -XX:Flags=%s to load the file.", |
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7167142: Consider a warning when finding a .hotspotrc or .hotspot_compiler file that isn't used
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|
3104 hotspotrc, hotspotrc); |
3759236eea14
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|
3105 } |
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|
3106 |
6055
35e504cb49a6
7167625: Adjustments for SE-Embedded build process
collins
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6017
diff
changeset
|
3107 #if (defined JAVASE_EMBEDDED || defined ARM) |
3797
eb94b7226b7a
7061192: option handling adjustments for oracle and embedded builds
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|
3108 UNSUPPORTED_OPTION(UseG1GC, "G1 GC"); |
eb94b7226b7a
7061192: option handling adjustments for oracle and embedded builds
jcoomes
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|
3109 #endif |
eb94b7226b7a
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|
3110 |
0 | 3111 #ifndef PRODUCT |
3112 if (TraceBytecodesAt != 0) { | |
3113 TraceBytecodes = true; | |
3114 } | |
3115 if (CountCompiledCalls) { | |
3116 if (UseCounterDecay) { | |
3117 warning("UseCounterDecay disabled because CountCalls is set"); | |
3118 UseCounterDecay = false; | |
3119 } | |
3120 } | |
3121 #endif // PRODUCT | |
3122 | |
2416
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
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2378
diff
changeset
|
3123 // JSR 292 is not supported before 1.7 |
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
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2378
diff
changeset
|
3124 if (!JDK_Version::is_gte_jdk17x_version()) { |
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
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2378
diff
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|
3125 if (EnableInvokeDynamic) { |
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
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2378
diff
changeset
|
3126 if (!FLAG_IS_DEFAULT(EnableInvokeDynamic)) { |
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
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2378
diff
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|
3127 warning("JSR 292 is not supported before 1.7. Disabling support."); |
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
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2378
diff
changeset
|
3128 } |
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
3129 EnableInvokeDynamic = false; |
710 | 3130 } |
3131 } | |
2416
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
3132 |
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
3133 if (EnableInvokeDynamic && ScavengeRootsInCode == 0) { |
989
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
932
diff
changeset
|
3134 if (!FLAG_IS_DEFAULT(ScavengeRootsInCode)) { |
2416
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
3135 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
|
3136 } |
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
932
diff
changeset
|
3137 ScavengeRootsInCode = 1; |
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
932
diff
changeset
|
3138 } |
710 | 3139 |
0 | 3140 if (PrintGCDetails) { |
3141 // Turn on -verbose:gc options as well | |
3142 PrintGC = true; | |
3143 } | |
3144 | |
6064
9d679effd28c
7166894: Add gc cause to GC logging for all collectors
brutisso
parents:
6017
diff
changeset
|
3145 if (!JDK_Version::is_gte_jdk18x_version()) { |
9d679effd28c
7166894: Add gc cause to GC logging for all collectors
brutisso
parents:
6017
diff
changeset
|
3146 // 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
|
3147 // true by default in JDK8 and above. |
9d679effd28c
7166894: Add gc cause to GC logging for all collectors
brutisso
parents:
6017
diff
changeset
|
3148 if (FLAG_IS_DEFAULT(PrintGCCause)) { |
9d679effd28c
7166894: Add gc cause to GC logging for all collectors
brutisso
parents:
6017
diff
changeset
|
3149 FLAG_SET_DEFAULT(PrintGCCause, false); |
9d679effd28c
7166894: Add gc cause to GC logging for all collectors
brutisso
parents:
6017
diff
changeset
|
3150 } |
9d679effd28c
7166894: Add gc cause to GC logging for all collectors
brutisso
parents:
6017
diff
changeset
|
3151 } |
9d679effd28c
7166894: Add gc cause to GC logging for all collectors
brutisso
parents:
6017
diff
changeset
|
3152 |
1571
2d127394260e
6916623: Align object to 16 bytes to use Compressed Oops with java heap up to 64Gb
kvn
parents:
1506
diff
changeset
|
3153 // 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
|
3154 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
|
3155 |
0 | 3156 #ifdef SERIALGC |
1064 | 3157 force_serial_gc(); |
0 | 3158 #endif // SERIALGC |
3159 #ifdef KERNEL | |
3160 no_shared_spaces(); | |
3161 #endif // KERNEL | |
3162 | |
3163 // Set flags based on ergonomics. | |
3164 set_ergonomics_flags(); | |
3165 | |
2362
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
3166 set_shared_spaces_flags(); |
1135
e66fd840cb6b
6893081: method handle & invokedynamic code needs additional cleanup (post 6815692, 6858164)
twisti
parents:
1131
diff
changeset
|
3167 |
10
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
3168 // Check the GC selections again. |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
3169 if (!check_gc_consistency()) { |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
3170 return JNI_EINVAL; |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
3171 } |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
3172 |
1783 | 3173 if (TieredCompilation) { |
3174 set_tiered_flags(); | |
3175 } else { | |
3176 // Check if the policy is valid. Policies 0 and 1 are valid for non-tiered setup. | |
3177 if (CompilationPolicyChoice >= 2) { | |
3178 vm_exit_during_initialization( | |
3179 "Incompatible compilation policy selected", NULL); | |
3180 } | |
3181 } | |
3182 | |
1145
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1074
diff
changeset
|
3183 #ifndef KERNEL |
2368
dde920245681
6896099: Integrate CMS heap ergo with default heap sizing ergo
ysr
parents:
2366
diff
changeset
|
3184 // Set heap size based on available physical memory |
dde920245681
6896099: Integrate CMS heap ergo with default heap sizing ergo
ysr
parents:
2366
diff
changeset
|
3185 set_heap_size(); |
dde920245681
6896099: Integrate CMS heap ergo with default heap sizing ergo
ysr
parents:
2366
diff
changeset
|
3186 // Set per-collector flags |
dde920245681
6896099: Integrate CMS heap ergo with default heap sizing ergo
ysr
parents:
2366
diff
changeset
|
3187 if (UseParallelGC || UseParallelOldGC) { |
dde920245681
6896099: Integrate CMS heap ergo with default heap sizing ergo
ysr
parents:
2366
diff
changeset
|
3188 set_parallel_gc_flags(); |
dde920245681
6896099: Integrate CMS heap ergo with default heap sizing ergo
ysr
parents:
2366
diff
changeset
|
3189 } 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
|
3190 set_cms_and_parnew_gc_flags(); |
2368
dde920245681
6896099: Integrate CMS heap ergo with default heap sizing ergo
ysr
parents:
2366
diff
changeset
|
3191 } 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
|
3192 set_parnew_gc_flags(); |
dde920245681
6896099: Integrate CMS heap ergo with default heap sizing ergo
ysr
parents:
2366
diff
changeset
|
3193 } else if (UseG1GC) { |
dde920245681
6896099: Integrate CMS heap ergo with default heap sizing ergo
ysr
parents:
2366
diff
changeset
|
3194 set_g1_gc_flags(); |
342
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
135
diff
changeset
|
3195 } |
1145
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1074
diff
changeset
|
3196 #endif // KERNEL |
10
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
3197 |
0 | 3198 #ifdef SERIALGC |
3199 assert(verify_serial_gc_flags(), "SerialGC unset"); | |
3200 #endif // SERIALGC | |
3201 | |
3202 // Set bytecode rewriting flags | |
3203 set_bytecode_flags(); | |
3204 | |
3205 // Set flags if Aggressive optimization flags (-XX:+AggressiveOpts) enabled. | |
3206 set_aggressive_opts_flags(); | |
3207 | |
2239
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3208 // Turn off biased locking for locking debug mode flags, |
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3209 // 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
|
3210 // biased locking. |
2331 | 3211 if (UseHeavyMonitors |
3212 #ifdef COMPILER1 | |
3213 || !UseFastLocking | |
3214 #endif // COMPILER1 | |
3215 ) { | |
2239
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3216 if (!FLAG_IS_DEFAULT(UseBiasedLocking) && UseBiasedLocking) { |
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3217 // 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
|
3218 // can't enable biased locking here |
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3219 warning("Biased Locking is not supported with locking debug flags" |
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3220 "; ignoring UseBiasedLocking flag." ); |
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3221 } |
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3222 UseBiasedLocking = false; |
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3223 } |
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3224 |
0 | 3225 #ifdef CC_INTERP |
1131 | 3226 // Clear flags not supported by the C++ interpreter |
3227 FLAG_SET_DEFAULT(ProfileInterpreter, false); | |
0 | 3228 FLAG_SET_DEFAULT(UseBiasedLocking, false); |
1131 | 3229 LP64_ONLY(FLAG_SET_DEFAULT(UseCompressedOops, false)); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6628
diff
changeset
|
3230 LP64_ONLY(FLAG_SET_DEFAULT(UseCompressedKlassPointers, false)); |
1131 | 3231 #endif // CC_INTERP |
3232 | |
420
a1980da045cc
6462850: generate biased locking code in C2 ideal graph
kvn
parents:
416
diff
changeset
|
3233 #ifdef COMPILER2 |
a1980da045cc
6462850: generate biased locking code in C2 ideal graph
kvn
parents:
416
diff
changeset
|
3234 if (!UseBiasedLocking || EmitSync != 0) { |
a1980da045cc
6462850: generate biased locking code in C2 ideal graph
kvn
parents:
416
diff
changeset
|
3235 UseOptoBiasInlining = false; |
a1980da045cc
6462850: generate biased locking code in C2 ideal graph
kvn
parents:
416
diff
changeset
|
3236 } |
4777 | 3237 if (!EliminateLocks) { |
3238 EliminateNestedLocks = false; | |
3239 } | |
420
a1980da045cc
6462850: generate biased locking code in C2 ideal graph
kvn
parents:
416
diff
changeset
|
3240 #endif |
a1980da045cc
6462850: generate biased locking code in C2 ideal graph
kvn
parents:
416
diff
changeset
|
3241 |
1155
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1150
diff
changeset
|
3242 if (PrintAssembly && FLAG_IS_DEFAULT(DebugNonSafepoints)) { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1150
diff
changeset
|
3243 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
|
3244 DebugNonSafepoints = true; |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1150
diff
changeset
|
3245 } |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1150
diff
changeset
|
3246 |
1188
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents:
1161
diff
changeset
|
3247 #ifndef PRODUCT |
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents:
1161
diff
changeset
|
3248 if (CompileTheWorld) { |
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents:
1161
diff
changeset
|
3249 // 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
|
3250 if (FLAG_IS_DEFAULT(NmethodSweepFraction)) { |
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents:
1161
diff
changeset
|
3251 NmethodSweepFraction = 1; |
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents:
1161
diff
changeset
|
3252 } |
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents:
1161
diff
changeset
|
3253 } |
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents:
1161
diff
changeset
|
3254 #endif |
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents:
1161
diff
changeset
|
3255 |
0 | 3256 if (PrintCommandLineFlags) { |
4773 | 3257 CommandLineFlags::printSetFlags(tty); |
0 | 3258 } |
3259 | |
1681
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
3260 // Apply CPU specific policy for the BiasedLocking |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
3261 if (UseBiasedLocking) { |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
3262 if (!VM_Version::use_biased_locking() && |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
3263 !(FLAG_IS_CMDLINE(UseBiasedLocking))) { |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
3264 UseBiasedLocking = false; |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
3265 } |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
3266 } |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
3267 |
2302
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
3268 // 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
|
3269 // 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
|
3270 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
|
3271 bool set = false; |
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
3272 CommandLineFlags::wasSetOnCmdline("PauseAtExit", &set); |
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
3273 if (!set) { |
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
3274 FLAG_SET_DEFAULT(PauseAtExit, true); |
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
3275 } |
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
3276 } |
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
3277 |
0 | 3278 return JNI_OK; |
3279 } | |
3280 | |
3281 int Arguments::PropertyList_count(SystemProperty* pl) { | |
3282 int count = 0; | |
3283 while(pl != NULL) { | |
3284 count++; | |
3285 pl = pl->next(); | |
3286 } | |
3287 return count; | |
3288 } | |
3289 | |
3290 const char* Arguments::PropertyList_get_value(SystemProperty *pl, const char* key) { | |
3291 assert(key != NULL, "just checking"); | |
3292 SystemProperty* prop; | |
3293 for (prop = pl; prop != NULL; prop = prop->next()) { | |
3294 if (strcmp(key, prop->key()) == 0) return prop->value(); | |
3295 } | |
3296 return NULL; | |
3297 } | |
3298 | |
3299 const char* Arguments::PropertyList_get_key_at(SystemProperty *pl, int index) { | |
3300 int count = 0; | |
3301 const char* ret_val = NULL; | |
3302 | |
3303 while(pl != NULL) { | |
3304 if(count >= index) { | |
3305 ret_val = pl->key(); | |
3306 break; | |
3307 } | |
3308 count++; | |
3309 pl = pl->next(); | |
3310 } | |
3311 | |
3312 return ret_val; | |
3313 } | |
3314 | |
3315 char* Arguments::PropertyList_get_value_at(SystemProperty* pl, int index) { | |
3316 int count = 0; | |
3317 char* ret_val = NULL; | |
3318 | |
3319 while(pl != NULL) { | |
3320 if(count >= index) { | |
3321 ret_val = pl->value(); | |
3322 break; | |
3323 } | |
3324 count++; | |
3325 pl = pl->next(); | |
3326 } | |
3327 | |
3328 return ret_val; | |
3329 } | |
3330 | |
3331 void Arguments::PropertyList_add(SystemProperty** plist, SystemProperty *new_p) { | |
3332 SystemProperty* p = *plist; | |
3333 if (p == NULL) { | |
3334 *plist = new_p; | |
3335 } else { | |
3336 while (p->next() != NULL) { | |
3337 p = p->next(); | |
3338 } | |
3339 p->set_next(new_p); | |
3340 } | |
3341 } | |
3342 | |
3343 void Arguments::PropertyList_add(SystemProperty** plist, const char* k, char* v) { | |
3344 if (plist == NULL) | |
3345 return; | |
3346 | |
3347 SystemProperty* new_p = new SystemProperty(k, v, true); | |
3348 PropertyList_add(plist, new_p); | |
3349 } | |
3350 | |
3351 // This add maintains unique property key in the list. | |
691 | 3352 void Arguments::PropertyList_unique_add(SystemProperty** plist, const char* k, char* v, jboolean append) { |
0 | 3353 if (plist == NULL) |
3354 return; | |
3355 | |
3356 // If property key exist then update with new value. | |
3357 SystemProperty* prop; | |
3358 for (prop = *plist; prop != NULL; prop = prop->next()) { | |
3359 if (strcmp(k, prop->key()) == 0) { | |
691 | 3360 if (append) { |
3361 prop->append_value(v); | |
3362 } else { | |
3363 prop->set_value(v); | |
3364 } | |
0 | 3365 return; |
3366 } | |
3367 } | |
3368 | |
3369 PropertyList_add(plist, k, v); | |
3370 } | |
3371 | |
3372 #ifdef KERNEL | |
3373 char *Arguments::get_kernel_properties() { | |
3374 // Find properties starting with kernel and append them to string | |
3375 // We need to find out how long they are first because the URL's that they | |
3376 // might point to could get long. | |
3377 int length = 0; | |
3378 SystemProperty* prop; | |
3379 for (prop = _system_properties; prop != NULL; prop = prop->next()) { | |
3380 if (strncmp(prop->key(), "kernel.", 7 ) == 0) { | |
3381 length += (strlen(prop->key()) + strlen(prop->value()) + 5); // "-D =" | |
3382 } | |
3383 } | |
3384 // Add one for null terminator. | |
6197 | 3385 char *props = AllocateHeap(length + 1, mtInternal); |
0 | 3386 if (length != 0) { |
3387 int pos = 0; | |
3388 for (prop = _system_properties; prop != NULL; prop = prop->next()) { | |
3389 if (strncmp(prop->key(), "kernel.", 7 ) == 0) { | |
3390 jio_snprintf(&props[pos], length-pos, | |
3391 "-D%s=%s ", prop->key(), prop->value()); | |
3392 pos = strlen(props); | |
3393 } | |
3394 } | |
3395 } | |
3396 // null terminate props in case of null | |
3397 props[length] = '\0'; | |
3398 return props; | |
3399 } | |
3400 #endif // KERNEL | |
3401 | |
3402 // Copies src into buf, replacing "%%" with "%" and "%p" with pid | |
3403 // Returns true if all of the source pointed by src has been copied over to | |
3404 // the destination buffer pointed by buf. Otherwise, returns false. | |
3405 // Notes: | |
3406 // 1. If the length (buflen) of the destination buffer excluding the | |
3407 // NULL terminator character is not long enough for holding the expanded | |
3408 // pid characters, it also returns false instead of returning the partially | |
3409 // expanded one. | |
3410 // 2. The passed in "buflen" should be large enough to hold the null terminator. | |
3411 bool Arguments::copy_expand_pid(const char* src, size_t srclen, | |
3412 char* buf, size_t buflen) { | |
3413 const char* p = src; | |
3414 char* b = buf; | |
3415 const char* src_end = &src[srclen]; | |
3416 char* buf_end = &buf[buflen - 1]; | |
3417 | |
3418 while (p < src_end && b < buf_end) { | |
3419 if (*p == '%') { | |
3420 switch (*(++p)) { | |
3421 case '%': // "%%" ==> "%" | |
3422 *b++ = *p++; | |
3423 break; | |
3424 case 'p': { // "%p" ==> current process id | |
3425 // buf_end points to the character before the last character so | |
3426 // that we could write '\0' to the end of the buffer. | |
3427 size_t buf_sz = buf_end - b + 1; | |
3428 int ret = jio_snprintf(b, buf_sz, "%d", os::current_process_id()); | |
3429 | |
3430 // if jio_snprintf fails or the buffer is not long enough to hold | |
3431 // the expanded pid, returns false. | |
3432 if (ret < 0 || ret >= (int)buf_sz) { | |
3433 return false; | |
3434 } else { | |
3435 b += ret; | |
3436 assert(*b == '\0', "fail in copy_expand_pid"); | |
3437 if (p == src_end && b == buf_end + 1) { | |
3438 // reach the end of the buffer. | |
3439 return true; | |
3440 } | |
3441 } | |
3442 p++; | |
3443 break; | |
3444 } | |
3445 default : | |
3446 *b++ = '%'; | |
3447 } | |
3448 } else { | |
3449 *b++ = *p++; | |
3450 } | |
3451 } | |
3452 *b = '\0'; | |
3453 return (p == src_end); // return false if not all of the source was copied | |
3454 } |