2 * Copyright (C) 2008 The Android Open Source Project
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
18 * Dalvik initialization, shutdown, and command-line argument processing.
21 #include "test/Test.h"
22 #include "mterp/Mterp.h"
33 #define kMinHeapStartSize (1*1024*1024)
34 #define kMinHeapSize (2*1024*1024)
35 #define kMaxHeapSize (1*1024*1024*1024)
38 * Register VM-agnostic native methods for system classes.
40 extern int jniRegisterSystemMethods(JNIEnv* env);
43 static bool registerSystemNatives(JNIEnv* pEnv);
44 static bool dvmInitJDWP(void);
45 static bool dvmInitZygote(void);
49 struct DvmGlobals gDvm;
51 /* JIT-specific global state */
53 struct DvmJitGlobals gDvmJit;
55 #if defined(WITH_JIT_TUNING)
57 * Track the number of hits in the inline cache for predicted chaining.
58 * Use an ugly global variable here since it is accessed in assembly code.
68 * We follow the tradition of unhyphenated compound words.
70 static void dvmUsage(const char* progName)
72 dvmFprintf(stderr, "%s: [options] class [argument ...]\n", progName);
73 dvmFprintf(stderr, "%s: [options] -jar file.jar [argument ...]\n",progName);
74 dvmFprintf(stderr, "\n");
75 dvmFprintf(stderr, "The following standard options are recognized:\n");
76 dvmFprintf(stderr, " -classpath classpath\n");
77 dvmFprintf(stderr, " -Dproperty=value\n");
78 dvmFprintf(stderr, " -verbose:tag ('gc', 'jni', or 'class')\n");
79 dvmFprintf(stderr, " -ea[:<package name>... |:<class name>]\n");
80 dvmFprintf(stderr, " -da[:<package name>... |:<class name>]\n");
81 dvmFprintf(stderr, " (-enableassertions, -disableassertions)\n");
82 dvmFprintf(stderr, " -esa\n");
83 dvmFprintf(stderr, " -dsa\n");
85 " (-enablesystemassertions, -disablesystemassertions)\n");
86 dvmFprintf(stderr, " -showversion\n");
87 dvmFprintf(stderr, " -help\n");
88 dvmFprintf(stderr, "\n");
89 dvmFprintf(stderr, "The following extended options are recognized:\n");
90 dvmFprintf(stderr, " -Xrunjdwp:<options>\n");
91 dvmFprintf(stderr, " -Xbootclasspath:bootclasspath\n");
92 dvmFprintf(stderr, " -Xcheck:tag (e.g. 'jni')\n");
93 dvmFprintf(stderr, " -XmsN (min heap, must be multiple of 1K, >= 1MB)\n");
94 dvmFprintf(stderr, " -XmxN (max heap, must be multiple of 1K, >= 2MB)\n");
95 dvmFprintf(stderr, " -XssN (stack size, >= %dKB, <= %dKB)\n",
96 kMinStackSize / 1024, kMaxStackSize / 1024);
97 dvmFprintf(stderr, " -Xverify:{none,remote,all}\n");
98 dvmFprintf(stderr, " -Xrs\n");
101 " -Xint (extended to accept ':portable', ':fast' and ':jit')\n");
104 " -Xint (extended to accept ':portable' and ':fast')\n");
106 dvmFprintf(stderr, "\n");
107 dvmFprintf(stderr, "These are unique to Dalvik:\n");
108 dvmFprintf(stderr, " -Xzygote\n");
109 dvmFprintf(stderr, " -Xdexopt:{none,verified,all}\n");
110 dvmFprintf(stderr, " -Xnoquithandler\n");
112 " -Xjnigreflimit:N (must be multiple of 100, >= 200)\n");
113 dvmFprintf(stderr, " -Xjniopts:{warnonly,forcecopy}\n");
114 dvmFprintf(stderr, " -Xjnitrace:substring (eg NativeClass or nativeMethod)\n");
115 dvmFprintf(stderr, " -Xdeadlockpredict:{off,warn,err,abort}\n");
116 dvmFprintf(stderr, " -Xstacktracefile:<filename>\n");
117 dvmFprintf(stderr, " -Xgc:[no]precise\n");
118 dvmFprintf(stderr, " -Xgc:[no]preverify\n");
119 dvmFprintf(stderr, " -Xgc:[no]postverify\n");
120 dvmFprintf(stderr, " -Xgc:[no]concurrent\n");
121 dvmFprintf(stderr, " -Xgc:[no]verifycardtable\n");
122 dvmFprintf(stderr, " -Xgenregmap\n");
123 dvmFprintf(stderr, " -Xcheckdexsum\n");
124 #if defined(WITH_JIT)
125 dvmFprintf(stderr, " -Xincludeselectedop\n");
126 dvmFprintf(stderr, " -Xjitop:hexopvalue[-endvalue]"
127 "[,hexopvalue[-endvalue]]*\n");
128 dvmFprintf(stderr, " -Xincludeselectedmethod\n");
129 dvmFprintf(stderr, " -Xjitthreshold:decimalvalue\n");
130 dvmFprintf(stderr, " -Xjitblocking\n");
131 dvmFprintf(stderr, " -Xjitmethod:signature[,signature]* "
132 "(eg Ljava/lang/String\\;replace)\n");
133 dvmFprintf(stderr, " -Xjitcheckcg\n");
134 dvmFprintf(stderr, " -Xjitverbose\n");
135 dvmFprintf(stderr, " -Xjitprofile\n");
136 dvmFprintf(stderr, " -Xjitdisableopt\n");
138 dvmFprintf(stderr, "\n");
139 dvmFprintf(stderr, "Configured with:"
142 #ifdef WITH_MONITOR_TRACKING
145 #ifdef WITH_DEADLOCK_PREDICTION
146 " deadlock_prediction"
151 #ifdef WITH_HPROF_STACK
154 #ifdef WITH_ALLOC_LIMITS
157 #ifdef WITH_TRACKREF_CHECKS
160 #ifdef WITH_INSTR_CHECKS
163 #ifdef WITH_EXTRA_OBJECT_VALIDATION
164 " extra_object_validation"
166 #ifdef WITH_EXTRA_GC_CHECKS
169 #if !defined(NDEBUG) && defined(WITH_DALVIK_ASSERT)
172 #ifdef WITH_JNI_STACK_CHECK
181 #ifdef PROFILE_FIELD_ACCESS
182 " profile_field_access"
184 #if defined(WITH_JIT)
185 " jit(" ARCH_VARIANT ")"
187 #if defined(WITH_SELF_VERIFICATION)
194 #ifdef DVM_SHOW_EXCEPTION
195 dvmFprintf(stderr, " show_exception=%d", DVM_SHOW_EXCEPTION);
197 dvmFprintf(stderr, "\n\n");
201 * Show helpful information on JDWP options.
203 static void showJdwpHelp(void)
206 "Example: -Xrunjdwp:transport=dt_socket,address=8000,server=y\n");
208 "Example: -Xrunjdwp:transport=dt_socket,address=localhost:6500,server=n\n");
212 * Show version and copyright info.
214 static void showVersion(void)
216 dvmFprintf(stdout, "DalvikVM version %d.%d.%d\n",
217 DALVIK_MAJOR_VERSION, DALVIK_MINOR_VERSION, DALVIK_BUG_VERSION);
219 "Copyright (C) 2007 The Android Open Source Project\n\n"
220 "This software is built from source code licensed under the "
222 "Version 2.0 (the \"License\"). You may obtain a copy of the "
224 " http://www.apache.org/licenses/LICENSE-2.0\n\n"
225 "See the associated NOTICE file for this software for further "
230 * Parse a string of the form /[0-9]+[kKmMgG]?/, which is used to specify
231 * memory sizes. [kK] indicates kilobytes, [mM] megabytes, and
234 * "s" should point just past the "-Xm?" part of the string.
235 * "min" specifies the lowest acceptable value described by "s".
236 * "div" specifies a divisor, e.g. 1024 if the value must be a multiple
239 * The spec says the -Xmx and -Xms options must be multiples of 1024. It
240 * doesn't say anything about -Xss.
242 * Returns 0 (a useless size) if "s" is malformed or specifies a low or
243 * non-evenly-divisible value.
245 static unsigned int dvmParseMemOption(const char *s, unsigned int div)
247 /* strtoul accepts a leading [+-], which we don't want,
248 * so make sure our string starts with a decimal digit.
254 val = (unsigned int)strtoul(s, (char **)&s2, 10);
256 /* s2 should be pointing just after the number.
257 * If this is the end of the string, the user
258 * has specified a number of bytes. Otherwise,
259 * there should be exactly one more character
260 * that specifies a multiplier.
265 /* The remainder of the string is either a single multiplier
266 * character, or nothing to indicate that the value is in
275 } else if (c == 'k' || c == 'K') {
277 } else if (c == 'm' || c == 'M') {
279 } else if (c == 'g' || c == 'G') {
280 mul = 1024 * 1024 * 1024;
282 /* Unknown multiplier character.
287 if (val <= UINT_MAX / mul) {
290 /* Clamp to a multiple of 1024.
292 val = UINT_MAX & ~(1024-1);
295 /* There's more than one character after the
302 /* The man page says that a -Xm value must be
303 * a multiple of 1024.
305 if (val % div == 0) {
315 * Handle one of the JDWP name/value pairs.
318 * help: if specified, show help message and bail
319 * transport: may be dt_socket or dt_shmem
320 * address: for dt_socket, "host:port", or just "port" when listening
321 * server: if "y", wait for debugger to attach; if "n", attach to debugger
322 * timeout: how long to wait for debugger to connect / listen
324 * Useful with server=n (these aren't supported yet):
325 * onthrow=<exception-name>: connect to debugger when exception thrown
326 * onuncaught=y|n: connect to debugger when uncaught exception thrown
327 * launch=<command-line>: launch the debugger itself
329 * The "transport" option is required, as is "address" if server=n.
331 static bool handleJdwpOption(const char* name, const char* value)
333 if (strcmp(name, "transport") == 0) {
334 if (strcmp(value, "dt_socket") == 0) {
335 gDvm.jdwpTransport = kJdwpTransportSocket;
336 } else if (strcmp(value, "dt_android_adb") == 0) {
337 gDvm.jdwpTransport = kJdwpTransportAndroidAdb;
339 LOGE("JDWP transport '%s' not supported\n", value);
342 } else if (strcmp(name, "server") == 0) {
344 gDvm.jdwpServer = false;
345 else if (*value == 'y')
346 gDvm.jdwpServer = true;
348 LOGE("JDWP option 'server' must be 'y' or 'n'\n");
351 } else if (strcmp(name, "suspend") == 0) {
353 gDvm.jdwpSuspend = false;
354 else if (*value == 'y')
355 gDvm.jdwpSuspend = true;
357 LOGE("JDWP option 'suspend' must be 'y' or 'n'\n");
360 } else if (strcmp(name, "address") == 0) {
361 /* this is either <port> or <host>:<port> */
362 const char* colon = strchr(value, ':');
368 gDvm.jdwpHost = (char*) malloc(colon - value +1);
369 strncpy(gDvm.jdwpHost, value, colon - value +1);
370 gDvm.jdwpHost[colon-value] = '\0';
373 if (*value == '\0') {
374 LOGE("JDWP address missing port\n");
377 port = strtol(value, &end, 10);
379 LOGE("JDWP address has junk in port field '%s'\n", value);
382 gDvm.jdwpPort = port;
383 } else if (strcmp(name, "launch") == 0 ||
384 strcmp(name, "onthrow") == 0 ||
385 strcmp(name, "oncaught") == 0 ||
386 strcmp(name, "timeout") == 0)
388 /* valid but unsupported */
389 LOGI("Ignoring JDWP option '%s'='%s'\n", name, value);
391 LOGI("Ignoring unrecognized JDWP option '%s'='%s'\n", name, value);
398 * Parse the latter half of a -Xrunjdwp/-agentlib:jdwp= string, e.g.:
399 * "transport=dt_socket,address=8000,server=y,suspend=n"
401 static bool parseJdwpOptions(const char* str)
403 char* mangle = strdup(str);
408 * Process all of the name=value pairs.
414 value = strchr(name, '=');
416 LOGE("JDWP opts: garbage at '%s'\n", name);
420 comma = strchr(name, ','); // use name, not value, for safety
423 LOGE("JDWP opts: found comma before '=' in '%s'\n", mangle);
429 *value++ = '\0'; // stomp the '='
431 if (!handleJdwpOption(name, value))
442 * Make sure the combination of arguments makes sense.
444 if (gDvm.jdwpTransport == kJdwpTransportUnknown) {
445 LOGE("JDWP opts: must specify transport\n");
448 if (!gDvm.jdwpServer && (gDvm.jdwpHost == NULL || gDvm.jdwpPort == 0)) {
449 LOGE("JDWP opts: when server=n, must specify host and port\n");
452 // transport mandatory
453 // outbound server address
455 gDvm.jdwpConfigured = true;
464 * Handle one of the four kinds of assertion arguments.
466 * "pkgOrClass" is the last part of an enable/disable line. For a package
467 * the arg looks like "-ea:com.google.fubar...", for a class it looks
468 * like "-ea:com.google.fubar.Wahoo". The string we get starts at the ':'.
470 * For system assertions (-esa/-dsa), "pkgOrClass" is NULL.
472 * Multiple instances of these arguments can be specified, e.g. you can
473 * enable assertions for a package and then disable them for one class in
476 static bool enableAssertions(const char* pkgOrClass, bool enable)
478 AssertionControl* pCtrl = &gDvm.assertionCtrl[gDvm.assertionCtrlCount++];
479 pCtrl->enable = enable;
481 if (pkgOrClass == NULL) {
482 /* enable or disable for all system classes */
483 pCtrl->isPackage = false;
484 pCtrl->pkgOrClass = NULL;
485 pCtrl->pkgOrClassLen = 0;
487 if (*pkgOrClass == '\0') {
488 /* global enable/disable for all but system */
489 pCtrl->isPackage = false;
490 pCtrl->pkgOrClass = strdup("");
491 pCtrl->pkgOrClassLen = 0;
493 pCtrl->pkgOrClass = dvmDotToSlash(pkgOrClass+1); // skip ':'
494 if (pCtrl->pkgOrClass == NULL) {
495 /* can happen if class name includes an illegal '/' */
496 LOGW("Unable to process assertion arg '%s'\n", pkgOrClass);
500 int len = strlen(pCtrl->pkgOrClass);
501 if (len >= 3 && strcmp(pCtrl->pkgOrClass + len-3, "///") == 0) {
502 /* mark as package, truncate two of the three slashes */
503 pCtrl->isPackage = true;
504 *(pCtrl->pkgOrClass + len-2) = '\0';
505 pCtrl->pkgOrClassLen = len - 2;
508 pCtrl->isPackage = false;
509 pCtrl->pkgOrClassLen = len;
518 * Turn assertions on when requested to do so by the Zygote.
520 * This is a bit sketchy. We can't (easily) go back and fiddle with all
521 * of the classes that have already been initialized, so this only
522 * affects classes that have yet to be loaded. If some or all assertions
523 * have been enabled through some other means, we don't want to mess with
524 * it here, so we do nothing. Finally, we assume that there's room in
525 * "assertionCtrl" to hold at least one entry; this is guaranteed by the
528 * This must only be called from the main thread during zygote init.
530 void dvmLateEnableAssertions(void)
532 if (gDvm.assertionCtrl == NULL) {
533 LOGD("Not late-enabling assertions: no assertionCtrl array\n");
535 } else if (gDvm.assertionCtrlCount != 0) {
536 LOGD("Not late-enabling assertions: some asserts already configured\n");
539 LOGD("Late-enabling assertions\n");
541 /* global enable for all but system */
542 AssertionControl* pCtrl = gDvm.assertionCtrl;
543 pCtrl->pkgOrClass = strdup("");
544 pCtrl->pkgOrClassLen = 0;
545 pCtrl->isPackage = false;
546 pCtrl->enable = true;
547 gDvm.assertionCtrlCount = 1;
552 * Release memory associated with the AssertionCtrl array.
554 static void freeAssertionCtrl(void)
558 for (i = 0; i < gDvm.assertionCtrlCount; i++)
559 free(gDvm.assertionCtrl[i].pkgOrClass);
560 free(gDvm.assertionCtrl);
563 #if defined(WITH_JIT)
564 /* Parse -Xjitop to selectively turn on/off certain opcodes for JIT */
565 static void processXjitop(const char *opt)
568 const char *startPtr = &opt[8];
572 long startValue, endValue;
574 startValue = strtol(startPtr, &endPtr, 16);
575 if (startPtr != endPtr) {
576 /* Just in case value is out of range */
579 if (*endPtr == '-') {
580 endValue = strtol(endPtr+1, &endPtr, 16);
583 endValue = startValue;
586 for (; startValue <= endValue; startValue++) {
587 LOGW("Dalvik opcode %x is selected for debugging",
588 (unsigned int) startValue);
589 /* Mark the corresponding bit to 1 */
590 gDvmJit.opList[startValue >> 3] |=
591 1 << (startValue & 0x7);
598 startPtr = endPtr + 1;
604 "Warning: Unrecognized opcode value substring "
612 for (i = 0; i < 32; i++) {
613 gDvmJit.opList[i] = 0xff;
615 dvmFprintf(stderr, "Warning: select all opcodes\n");
619 /* Parse -Xjitmethod to selectively turn on/off certain methods for JIT */
620 static void processXjitmethod(const char *opt)
622 char *buf = strdup(&opt[12]);
625 gDvmJit.methodTable = dvmHashTableCreate(8, NULL);
629 * Break comma-separated method signatures and enter them into the hash
630 * table individually.
635 end = strchr(start, ',');
640 hashValue = dvmComputeUtf8Hash(start);
642 dvmHashTableLookup(gDvmJit.methodTable, hashValue,
644 (HashCompareFunc) strcmp, true);
656 * Process an argument vector full of options. Unlike standard C programs,
657 * argv[0] does not contain the name of the program.
659 * If "ignoreUnrecognized" is set, we ignore options starting with "-X" or "_"
660 * that we don't recognize. Otherwise, we return with an error as soon as
661 * we see anything we can't identify.
663 * Returns 0 on success, -1 on failure, and 1 for the special case of
664 * "-version" where we want to stop without showing an error message.
666 static int dvmProcessOptions(int argc, const char* const argv[],
667 bool ignoreUnrecognized)
671 LOGV("VM options (%d):\n", argc);
672 for (i = 0; i < argc; i++)
673 LOGV(" %d: '%s'\n", i, argv[i]);
676 * Over-allocate AssertionControl array for convenience. If allocated,
677 * the array must be able to hold at least one entry, so that the
678 * zygote-time activation can do its business.
680 assert(gDvm.assertionCtrl == NULL);
683 (AssertionControl*) malloc(sizeof(AssertionControl) * argc);
684 if (gDvm.assertionCtrl == NULL)
686 assert(gDvm.assertionCtrlCount == 0);
689 for (i = 0; i < argc; i++) {
690 if (strcmp(argv[i], "-help") == 0) {
691 /* show usage and stop */
694 } else if (strcmp(argv[i], "-version") == 0) {
695 /* show version and stop */
698 } else if (strcmp(argv[i], "-showversion") == 0) {
699 /* show version and continue */
702 } else if (strcmp(argv[i], "-classpath") == 0 ||
703 strcmp(argv[i], "-cp") == 0)
707 dvmFprintf(stderr, "Missing classpath path list\n");
710 free(gDvm.classPathStr); /* in case we have compiled-in default */
711 gDvm.classPathStr = strdup(argv[++i]);
713 } else if (strncmp(argv[i], "-Xbootclasspath:",
714 sizeof("-Xbootclasspath:")-1) == 0)
716 /* set bootclasspath */
717 const char* path = argv[i] + sizeof("-Xbootclasspath:")-1;
720 dvmFprintf(stderr, "Missing bootclasspath path list\n");
723 free(gDvm.bootClassPathStr);
724 gDvm.bootClassPathStr = strdup(path);
727 * TODO: support -Xbootclasspath/a and /p, which append or
728 * prepend to the default bootclasspath. We set the default
732 } else if (strncmp(argv[i], "-D", 2) == 0) {
734 dvmAddCommandLineProperty(argv[i] + 2);
736 } else if (strcmp(argv[i], "-jar") == 0) {
737 // TODO: handle this; name of jar should be in argv[i+1]
738 dvmFprintf(stderr, "-jar not yet handled\n");
741 } else if (strncmp(argv[i], "-Xms", 4) == 0) {
742 unsigned int val = dvmParseMemOption(argv[i]+4, 1024);
744 if (val >= kMinHeapStartSize && val <= kMaxHeapSize) {
745 gDvm.heapSizeStart = val;
748 "Invalid -Xms '%s', range is %dKB to %dKB\n",
749 argv[i], kMinHeapStartSize/1024, kMaxHeapSize/1024);
753 dvmFprintf(stderr, "Invalid -Xms option '%s'\n", argv[i]);
756 } else if (strncmp(argv[i], "-Xmx", 4) == 0) {
757 unsigned int val = dvmParseMemOption(argv[i]+4, 1024);
759 if (val >= kMinHeapSize && val <= kMaxHeapSize) {
760 gDvm.heapSizeMax = val;
763 "Invalid -Xmx '%s', range is %dKB to %dKB\n",
764 argv[i], kMinHeapSize/1024, kMaxHeapSize/1024);
768 dvmFprintf(stderr, "Invalid -Xmx option '%s'\n", argv[i]);
771 } else if (strncmp(argv[i], "-Xss", 4) == 0) {
772 unsigned int val = dvmParseMemOption(argv[i]+4, 1);
774 if (val >= kMinStackSize && val <= kMaxStackSize) {
775 gDvm.stackSize = val;
777 dvmFprintf(stderr, "Invalid -Xss '%s', range is %d to %d\n",
778 argv[i], kMinStackSize, kMaxStackSize);
782 dvmFprintf(stderr, "Invalid -Xss option '%s'\n", argv[i]);
786 } else if (strcmp(argv[i], "-verbose") == 0 ||
787 strcmp(argv[i], "-verbose:class") == 0)
789 // JNI spec says "-verbose:gc,class" is valid, but cmd line
790 // doesn't work that way; may want to support.
791 gDvm.verboseClass = true;
792 } else if (strcmp(argv[i], "-verbose:jni") == 0) {
793 gDvm.verboseJni = true;
794 } else if (strcmp(argv[i], "-verbose:gc") == 0) {
795 gDvm.verboseGc = true;
796 } else if (strcmp(argv[i], "-verbose:shutdown") == 0) {
797 gDvm.verboseShutdown = true;
799 } else if (strncmp(argv[i], "-enableassertions", 17) == 0) {
800 enableAssertions(argv[i] + 17, true);
801 } else if (strncmp(argv[i], "-ea", 3) == 0) {
802 enableAssertions(argv[i] + 3, true);
803 } else if (strncmp(argv[i], "-disableassertions", 18) == 0) {
804 enableAssertions(argv[i] + 18, false);
805 } else if (strncmp(argv[i], "-da", 3) == 0) {
806 enableAssertions(argv[i] + 3, false);
807 } else if (strcmp(argv[i], "-enablesystemassertions") == 0 ||
808 strcmp(argv[i], "-esa") == 0)
810 enableAssertions(NULL, true);
811 } else if (strcmp(argv[i], "-disablesystemassertions") == 0 ||
812 strcmp(argv[i], "-dsa") == 0)
814 enableAssertions(NULL, false);
816 } else if (strncmp(argv[i], "-Xcheck:jni", 11) == 0) {
817 /* nothing to do now -- was handled during JNI init */
819 } else if (strcmp(argv[i], "-Xdebug") == 0) {
820 /* accept but ignore */
822 } else if (strncmp(argv[i], "-Xrunjdwp:", 10) == 0 ||
823 strncmp(argv[i], "-agentlib:jdwp=", 15) == 0)
827 if (argv[i][1] == 'X')
832 if (strncmp(tail, "help", 4) == 0 || !parseJdwpOptions(tail)) {
836 } else if (strcmp(argv[i], "-Xrs") == 0) {
837 gDvm.reduceSignals = true;
838 } else if (strcmp(argv[i], "-Xnoquithandler") == 0) {
839 /* disables SIGQUIT handler thread while still blocking SIGQUIT */
840 /* (useful if we don't want thread but system still signals us) */
841 gDvm.noQuitHandler = true;
842 } else if (strcmp(argv[i], "-Xzygote") == 0) {
844 #if defined(WITH_JIT)
845 gDvmJit.runningInAndroidFramework = true;
847 } else if (strncmp(argv[i], "-Xdexopt:", 9) == 0) {
848 if (strcmp(argv[i] + 9, "none") == 0)
849 gDvm.dexOptMode = OPTIMIZE_MODE_NONE;
850 else if (strcmp(argv[i] + 9, "verified") == 0)
851 gDvm.dexOptMode = OPTIMIZE_MODE_VERIFIED;
852 else if (strcmp(argv[i] + 9, "all") == 0)
853 gDvm.dexOptMode = OPTIMIZE_MODE_ALL;
855 dvmFprintf(stderr, "Unrecognized dexopt option '%s'\n",argv[i]);
858 } else if (strncmp(argv[i], "-Xverify:", 9) == 0) {
859 if (strcmp(argv[i] + 9, "none") == 0)
860 gDvm.classVerifyMode = VERIFY_MODE_NONE;
861 else if (strcmp(argv[i] + 9, "remote") == 0)
862 gDvm.classVerifyMode = VERIFY_MODE_REMOTE;
863 else if (strcmp(argv[i] + 9, "all") == 0)
864 gDvm.classVerifyMode = VERIFY_MODE_ALL;
866 dvmFprintf(stderr, "Unrecognized verify option '%s'\n",argv[i]);
869 } else if (strncmp(argv[i], "-Xjnigreflimit:", 15) == 0) {
870 int lim = atoi(argv[i] + 15);
871 if (lim < 200 || (lim % 100) != 0) {
872 dvmFprintf(stderr, "Bad value for -Xjnigreflimit: '%s'\n",
876 gDvm.jniGrefLimit = lim;
877 } else if (strncmp(argv[i], "-Xjnitrace:", 11) == 0) {
878 gDvm.jniTrace = strdup(argv[i] + 11);
879 } else if (strcmp(argv[i], "-Xlog-stdio") == 0) {
880 gDvm.logStdio = true;
882 } else if (strncmp(argv[i], "-Xint", 5) == 0) {
883 if (argv[i][5] == ':') {
884 if (strcmp(argv[i] + 6, "portable") == 0)
885 gDvm.executionMode = kExecutionModeInterpPortable;
886 else if (strcmp(argv[i] + 6, "fast") == 0)
887 gDvm.executionMode = kExecutionModeInterpFast;
889 else if (strcmp(argv[i] + 6, "jit") == 0)
890 gDvm.executionMode = kExecutionModeJit;
894 "Warning: Unrecognized interpreter mode %s\n",argv[i]);
898 /* disable JIT if it was enabled by default */
899 gDvm.executionMode = kExecutionModeInterpFast;
902 } else if (strncmp(argv[i], "-Xlockprofthreshold:", 20) == 0) {
903 gDvm.lockProfThreshold = atoi(argv[i] + 20);
906 } else if (strncmp(argv[i], "-Xjitop", 7) == 0) {
907 processXjitop(argv[i]);
908 } else if (strncmp(argv[i], "-Xjitmethod", 11) == 0) {
909 processXjitmethod(argv[i]);
910 } else if (strncmp(argv[i], "-Xjitblocking", 13) == 0) {
911 gDvmJit.blockingMode = true;
912 } else if (strncmp(argv[i], "-Xjitthreshold:", 15) == 0) {
913 gDvmJit.threshold = atoi(argv[i] + 15);
914 } else if (strncmp(argv[i], "-Xincludeselectedop", 19) == 0) {
915 gDvmJit.includeSelectedOp = true;
916 } else if (strncmp(argv[i], "-Xincludeselectedmethod", 23) == 0) {
917 gDvmJit.includeSelectedMethod = true;
918 } else if (strncmp(argv[i], "-Xjitcheckcg", 12) == 0) {
919 gDvmJit.checkCallGraph = true;
920 /* Need to enable blocking mode due to stack crawling */
921 gDvmJit.blockingMode = true;
922 } else if (strncmp(argv[i], "-Xjitverbose", 12) == 0) {
923 gDvmJit.printMe = true;
924 } else if (strncmp(argv[i], "-Xjitprofile", 12) == 0) {
925 gDvmJit.profile = true;
926 } else if (strncmp(argv[i], "-Xjitdisableopt", 15) == 0) {
927 /* Disable selected optimizations */
928 if (argv[i][15] == ':') {
929 sscanf(argv[i] + 16, "%x", &gDvmJit.disableOpt);
930 /* Disable all optimizations */
932 gDvmJit.disableOpt = -1;
936 } else if (strncmp(argv[i], "-Xdeadlockpredict:", 18) == 0) {
937 #ifdef WITH_DEADLOCK_PREDICTION
938 if (strcmp(argv[i] + 18, "off") == 0)
939 gDvm.deadlockPredictMode = kDPOff;
940 else if (strcmp(argv[i] + 18, "warn") == 0)
941 gDvm.deadlockPredictMode = kDPWarn;
942 else if (strcmp(argv[i] + 18, "err") == 0)
943 gDvm.deadlockPredictMode = kDPErr;
944 else if (strcmp(argv[i] + 18, "abort") == 0)
945 gDvm.deadlockPredictMode = kDPAbort;
947 dvmFprintf(stderr, "Bad value for -Xdeadlockpredict");
950 if (gDvm.deadlockPredictMode != kDPOff)
951 LOGD("Deadlock prediction enabled (%s)\n", argv[i]+18);
954 } else if (strncmp(argv[i], "-Xstacktracefile:", 17) == 0) {
955 gDvm.stackTraceFile = strdup(argv[i]+17);
957 } else if (strcmp(argv[i], "-Xgenregmap") == 0) {
958 gDvm.generateRegisterMaps = true;
959 LOGV("Register maps will be generated during verification\n");
961 } else if (strncmp(argv[i], "-Xgc:", 5) == 0) {
962 if (strcmp(argv[i] + 5, "precise") == 0)
963 gDvm.preciseGc = true;
964 else if (strcmp(argv[i] + 5, "noprecise") == 0)
965 gDvm.preciseGc = false;
966 else if (strcmp(argv[i] + 5, "preverify") == 0)
967 gDvm.preVerify = true;
968 else if (strcmp(argv[i] + 5, "nopreverify") == 0)
969 gDvm.preVerify = false;
970 else if (strcmp(argv[i] + 5, "postverify") == 0)
971 gDvm.postVerify = true;
972 else if (strcmp(argv[i] + 5, "nopostverify") == 0)
973 gDvm.postVerify = false;
974 else if (strcmp(argv[i] + 5, "concurrent") == 0)
975 gDvm.concurrentMarkSweep = true;
976 else if (strcmp(argv[i] + 5, "noconcurrent") == 0)
977 gDvm.concurrentMarkSweep = false;
978 else if (strcmp(argv[i] + 5, "verifycardtable") == 0)
979 gDvm.verifyCardTable = true;
980 else if (strcmp(argv[i] + 5, "noverifycardtable") == 0)
981 gDvm.verifyCardTable = false;
983 dvmFprintf(stderr, "Bad value for -Xgc");
986 LOGV("Precise GC configured %s\n", gDvm.preciseGc ? "ON" : "OFF");
988 } else if (strcmp(argv[i], "-Xcheckdexsum") == 0) {
989 gDvm.verifyDexChecksum = true;
991 } else if (strcmp(argv[i], "-Xprofile:wallclock") == 0) {
992 gDvm.profilerWallClock = true;
995 if (!ignoreUnrecognized) {
996 dvmFprintf(stderr, "Unrecognized option '%s'\n", argv[i]);
1002 if (gDvm.heapSizeStart > gDvm.heapSizeMax) {
1003 dvmFprintf(stderr, "Heap start size must be <= heap max size\n");
1011 * Set defaults for fields altered or modified by arguments.
1013 * Globals are initialized to 0 (a/k/a NULL or false).
1015 static void setCommandLineDefaults()
1019 envStr = getenv("CLASSPATH");
1021 gDvm.classPathStr = strdup(envStr);
1023 gDvm.classPathStr = strdup(".");
1024 envStr = getenv("BOOTCLASSPATH");
1026 gDvm.bootClassPathStr = strdup(envStr);
1028 gDvm.bootClassPathStr = strdup(".");
1030 /* Defaults overridden by -Xms and -Xmx.
1031 * TODO: base these on a system or application-specific default
1033 gDvm.heapSizeStart = 2 * 1024 * 1024; // Spec says 16MB; too big for us.
1034 gDvm.heapSizeMax = 16 * 1024 * 1024; // Spec says 75% physical mem
1035 gDvm.stackSize = kDefaultStackSize;
1037 gDvm.concurrentMarkSweep = true;
1039 /* gDvm.jdwpSuspend = true; */
1041 /* allowed unless zygote config doesn't allow it */
1042 gDvm.jdwpAllowed = true;
1044 /* default verification and optimization modes */
1045 gDvm.classVerifyMode = VERIFY_MODE_ALL;
1046 gDvm.dexOptMode = OPTIMIZE_MODE_VERIFIED;
1049 * Default execution mode.
1051 * This should probably interact with the mterp code somehow, e.g. if
1052 * we know we're using the "desktop" build we should probably be
1053 * using "portable" rather than "fast".
1055 #if defined(WITH_JIT)
1056 gDvm.executionMode = kExecutionModeJit;
1058 gDvm.executionMode = kExecutionModeInterpFast;
1062 * SMP support is a compile-time define, but we may want to have
1063 * dexopt target a differently-configured device.
1065 gDvm.dexOptForSmp = (ANDROID_SMP != 0);
1070 * Handle a SIGBUS, which frequently occurs because somebody replaced an
1071 * optimized DEX file out from under us.
1073 static void busCatcher(int signum, siginfo_t* info, void* context)
1075 void* addr = info->si_addr;
1077 LOGE("Caught a SIGBUS (%d), addr=%p\n", signum, addr);
1080 * If we return at this point the SIGBUS just keeps happening, so we
1081 * remove the signal handler and allow it to kill us. TODO: restore
1082 * the original, which points to a debuggerd stub; if we don't then
1083 * debuggerd won't be notified.
1085 signal(SIGBUS, SIG_DFL);
1089 * Configure signals. We need to block SIGQUIT so that the signal only
1090 * reaches the dump-stack-trace thread.
1092 * This can be disabled with the "-Xrs" flag.
1094 static void blockSignals()
1100 sigaddset(&mask, SIGQUIT);
1101 sigaddset(&mask, SIGUSR1); // used to initiate heap dump
1102 #if defined(WITH_JIT) && defined(WITH_JIT_TUNING)
1103 sigaddset(&mask, SIGUSR2); // used to investigate JIT internals
1105 //sigaddset(&mask, SIGPIPE);
1106 cc = sigprocmask(SIG_BLOCK, &mask, NULL);
1110 /* TODO: save the old sigaction in a global */
1111 struct sigaction sa;
1112 memset(&sa, 0, sizeof(sa));
1113 sa.sa_sigaction = busCatcher;
1114 sa.sa_flags = SA_SIGINFO;
1115 cc = sigaction(SIGBUS, &sa, NULL);
1121 * VM initialization. Pass in any options provided on the command line.
1122 * Do not pass in the class name or the options for the class.
1124 * Returns 0 on success.
1126 int dvmStartup(int argc, const char* const argv[], bool ignoreUnrecognized,
1131 assert(gDvm.initializing);
1133 LOGV("VM init args (%d):\n", argc);
1134 for (i = 0; i < argc; i++)
1135 LOGV(" %d: '%s'\n", i, argv[i]);
1137 setCommandLineDefaults();
1139 /* prep properties storage */
1140 if (!dvmPropertiesStartup(argc))
1144 * Process the option flags (if any).
1146 cc = dvmProcessOptions(argc, argv, ignoreUnrecognized);
1149 dvmFprintf(stderr, "\n");
1150 dvmUsage("dalvikvm");
1155 #if WITH_EXTRA_GC_CHECKS > 1
1156 /* only "portable" interp has the extra goodies */
1157 if (gDvm.executionMode != kExecutionModeInterpPortable) {
1158 LOGI("Switching to 'portable' interpreter for GC checks\n");
1159 gDvm.executionMode = kExecutionModeInterpPortable;
1163 /* Configure group scheduling capabilities */
1164 if (!access("/dev/cpuctl/tasks", F_OK)) {
1165 LOGV("Using kernel group scheduling");
1166 gDvm.kernelGroupScheduling = 1;
1168 LOGV("Using kernel scheduler policies");
1171 /* configure signal handling */
1172 if (!gDvm.reduceSignals)
1175 /* verify system page size */
1176 if (sysconf(_SC_PAGESIZE) != SYSTEM_PAGE_SIZE) {
1177 LOGE("ERROR: expected page size %d, got %d\n",
1178 SYSTEM_PAGE_SIZE, (int) sysconf(_SC_PAGESIZE));
1183 LOGV("Using executionMode %d\n", gDvm.executionMode);
1184 dvmCheckAsmConstants();
1187 * Initialize components.
1189 if (!dvmAllocTrackerStartup())
1191 if (!dvmGcStartup())
1193 if (!dvmThreadStartup())
1195 if (!dvmInlineNativeStartup())
1197 if (!dvmVerificationStartup())
1199 if (!dvmRegisterMapStartup())
1201 if (!dvmInstanceofStartup())
1203 if (!dvmClassStartup())
1205 if (!dvmThreadObjStartup())
1207 if (!dvmExceptionStartup())
1209 if (!dvmStringInternStartup())
1211 if (!dvmNativeStartup())
1213 if (!dvmInternalNativeStartup())
1215 if (!dvmJniStartup())
1217 if (!dvmReflectStartup())
1219 if (!dvmProfilingStartup())
1222 /* make sure we got these [can this go away?] */
1223 assert(gDvm.classJavaLangClass != NULL);
1224 assert(gDvm.classJavaLangObject != NULL);
1225 //assert(gDvm.classJavaLangString != NULL);
1226 assert(gDvm.classJavaLangThread != NULL);
1227 assert(gDvm.classJavaLangVMThread != NULL);
1228 assert(gDvm.classJavaLangThreadGroup != NULL);
1231 * Make sure these exist. If they don't, we can return a failure out
1232 * of main and nip the whole thing in the bud.
1234 static const char* earlyClasses[] = {
1235 "Ljava/lang/InternalError;",
1236 "Ljava/lang/StackOverflowError;",
1237 "Ljava/lang/UnsatisfiedLinkError;",
1238 "Ljava/lang/NoClassDefFoundError;",
1241 const char** pClassName;
1242 for (pClassName = earlyClasses; *pClassName != NULL; pClassName++) {
1243 if (dvmFindSystemClassNoInit(*pClassName) == NULL)
1248 * Miscellaneous class library validation.
1250 if (!dvmValidateBoxClasses())
1254 * Do the last bits of Thread struct initialization we need to allow
1255 * JNI calls to work.
1257 if (!dvmPrepMainForJni(pEnv))
1261 * Register the system native methods, which are registered through JNI.
1263 if (!registerSystemNatives(pEnv))
1267 * Do some "late" initialization for the memory allocator. This may
1268 * allocate storage and initialize classes.
1270 if (!dvmCreateStockExceptions())
1274 * At this point, the VM is in a pretty good state. Finish prep on
1275 * the main thread (specifically, create a java.lang.Thread object to go
1276 * along with our Thread struct). Note we will probably be executing
1277 * some interpreted class initializer code in here.
1279 if (!dvmPrepMainThread())
1283 * Make sure we haven't accumulated any tracked references. The main
1284 * thread should be starting with a clean slate.
1286 if (dvmReferenceTableEntries(&dvmThreadSelf()->internalLocalRefTable) != 0)
1288 LOGW("Warning: tracked references remain post-initialization\n");
1289 dvmDumpReferenceTable(&dvmThreadSelf()->internalLocalRefTable, "MAIN");
1292 /* general debugging setup */
1293 if (!dvmDebuggerStartup())
1297 * Init for either zygote mode or non-zygote mode. The key difference
1298 * is that we don't start any additional threads in Zygote mode.
1301 if (!dvmInitZygote())
1304 if (!dvmInitAfterZygote())
1311 LOGE("dmvTestHash FAILED\n");
1312 if (false /*noisy!*/ && !dvmTestIndirectRefTable())
1313 LOGE("dvmTestIndirectRefTable FAILED\n");
1316 assert(!dvmCheckException(dvmThreadSelf()));
1317 gDvm.initExceptionCount = 0;
1327 * Register java.* natives from our class libraries. We need to do
1328 * this after we're ready for JNI registration calls, but before we
1329 * do any class initialization.
1331 * If we get this wrong, we will blow up in the ThreadGroup class init if
1332 * interpreted code makes any reference to System. It will likely do this
1333 * since it wants to do some java.io.File setup (e.g. for static in/out/err).
1335 * We need to have gDvm.initializing raised here so that JNI FindClass
1336 * won't try to use the system/application class loader.
1338 static bool registerSystemNatives(JNIEnv* pEnv)
1342 /* main thread is always first in list */
1343 self = gDvm.threadList;
1345 /* must set this before allowing JNI-based method registration */
1346 self->status = THREAD_NATIVE;
1348 if (jniRegisterSystemMethods(pEnv) < 0) {
1349 LOGW("jniRegisterSystemMethods failed\n");
1353 /* back to run mode */
1354 self->status = THREAD_RUNNING;
1361 * Do zygote-mode-only initialization.
1363 static bool dvmInitZygote(void)
1365 /* zygote goes into its own process group */
1372 * Do non-zygote-mode initialization. This is done during VM init for
1373 * standard startup, or after a "zygote fork" when creating a new process.
1375 bool dvmInitAfterZygote(void)
1377 u8 startHeap, startQuit, startJdwp;
1378 u8 endHeap, endQuit, endJdwp;
1380 startHeap = dvmGetRelativeTimeUsec();
1383 * Post-zygote heap initialization, including starting
1384 * the HeapWorker thread.
1386 if (!dvmGcStartupAfterZygote())
1389 endHeap = dvmGetRelativeTimeUsec();
1390 startQuit = dvmGetRelativeTimeUsec();
1392 /* start signal catcher thread that dumps stacks on SIGQUIT */
1393 if (!gDvm.reduceSignals && !gDvm.noQuitHandler) {
1394 if (!dvmSignalCatcherStartup())
1398 /* start stdout/stderr copier, if requested */
1399 if (gDvm.logStdio) {
1400 if (!dvmStdioConverterStartup())
1404 endQuit = dvmGetRelativeTimeUsec();
1405 startJdwp = dvmGetRelativeTimeUsec();
1408 * Start JDWP thread. If the command-line debugger flags specified
1409 * "suspend=y", this will pause the VM. We probably want this to
1412 if (!dvmInitJDWP()) {
1413 LOGD("JDWP init failed; continuing anyway\n");
1416 endJdwp = dvmGetRelativeTimeUsec();
1418 LOGV("thread-start heap=%d quit=%d jdwp=%d total=%d usec\n",
1419 (int)(endHeap-startHeap), (int)(endQuit-startQuit),
1420 (int)(endJdwp-startJdwp), (int)(endJdwp-startHeap));
1423 if (gDvm.executionMode == kExecutionModeJit) {
1424 if (!dvmCompilerStartup())
1433 * Prepare for a connection to a JDWP-compliant debugger.
1435 * Note this needs to happen fairly late in the startup process, because
1436 * we need to have all of the java.* native methods registered (which in
1437 * turn requires JNI to be fully prepped).
1439 * There are several ways to initialize:
1441 * We immediately try to connect to host:port. Bail on failure. On
1442 * success, send VM_START (suspending the VM if "suspend=y").
1443 * server=y suspend=n
1444 * Passively listen for a debugger to connect. Return immediately.
1445 * server=y suspend=y
1446 * Wait until debugger connects. Send VM_START ASAP, suspending the
1447 * VM after the message is sent.
1449 * This gets more complicated with a nonzero value for "timeout".
1451 static bool dvmInitJDWP(void)
1453 assert(!gDvm.zygote);
1456 * Init JDWP if the debugger is enabled. This may connect out to a
1457 * debugger, passively listen for a debugger, or block waiting for a
1460 if (gDvm.jdwpAllowed && gDvm.jdwpConfigured) {
1461 JdwpStartupParams params;
1463 if (gDvm.jdwpHost != NULL) {
1464 if (strlen(gDvm.jdwpHost) >= sizeof(params.host)-1) {
1465 LOGE("ERROR: hostname too long: '%s'\n", gDvm.jdwpHost);
1468 strcpy(params.host, gDvm.jdwpHost);
1470 params.host[0] = '\0';
1472 params.transport = gDvm.jdwpTransport;
1473 params.server = gDvm.jdwpServer;
1474 params.suspend = gDvm.jdwpSuspend;
1475 params.port = gDvm.jdwpPort;
1477 gDvm.jdwpState = dvmJdwpStartup(¶ms);
1478 if (gDvm.jdwpState == NULL) {
1479 LOGW("WARNING: debugger thread failed to initialize\n");
1480 /* TODO: ignore? fail? need to mimic "expected" behavior */
1485 * If a debugger has already attached, send the "welcome" message. This
1486 * may cause us to suspend all threads.
1488 if (dvmJdwpIsActive(gDvm.jdwpState)) {
1489 //dvmChangeStatus(NULL, THREAD_RUNNING);
1490 if (!dvmJdwpPostVMStart(gDvm.jdwpState, gDvm.jdwpSuspend)) {
1491 LOGW("WARNING: failed to post 'start' message to debugger\n");
1494 //dvmChangeStatus(NULL, THREAD_NATIVE);
1501 * An alternative to JNI_CreateJavaVM/dvmStartup that does the first bit
1502 * of initialization and then returns with "initializing" still set. (Used
1503 * by DexOpt command-line utility.)
1505 * Attempting to use JNI or internal natives will fail. It's best if
1506 * no bytecode gets executed, which means no <clinit>, which means no
1507 * exception-throwing. We check the "initializing" flag anyway when
1508 * throwing an exception, so we can insert some code that avoids chucking
1509 * an exception when we're optimizing stuff.
1511 * Returns 0 on success.
1513 int dvmPrepForDexOpt(const char* bootClassPath, DexOptimizerMode dexOptMode,
1514 DexClassVerifyMode verifyMode, int dexoptFlags)
1516 gDvm.initializing = true;
1517 gDvm.optimizing = true;
1519 /* configure signal handling */
1522 /* set some defaults */
1523 setCommandLineDefaults();
1524 free(gDvm.bootClassPathStr);
1525 gDvm.bootClassPathStr = strdup(bootClassPath);
1527 /* set opt/verify modes */
1528 gDvm.dexOptMode = dexOptMode;
1529 gDvm.classVerifyMode = verifyMode;
1530 gDvm.generateRegisterMaps = (dexoptFlags & DEXOPT_GEN_REGISTER_MAPS) != 0;
1533 * Initialize the heap, some basic thread control mutexes, and
1534 * get the bootclasspath prepped.
1536 * We can't load any classes yet because we may not yet have a source
1537 * for things like java.lang.Object and java.lang.Class.
1539 if (!dvmGcStartup())
1541 if (!dvmThreadStartup())
1543 if (!dvmInlineNativeStartup())
1545 if (!dvmVerificationStartup())
1547 if (!dvmRegisterMapStartup())
1549 if (!dvmInstanceofStartup())
1551 if (!dvmClassStartup())
1555 * We leave gDvm.initializing set to "true" so that, if we're not
1556 * able to process the "core" classes, we don't go into a death-spin
1557 * trying to throw a "class not found" exception.
1569 * All threads have stopped. Finish the shutdown procedure.
1571 * We can also be called if startup fails partway through, so be prepared
1572 * to deal with partially initialized data.
1574 * Free any storage allocated in gGlobals.
1576 * We can't dlclose() shared libs we've loaded, because it's possible a
1577 * thread not associated with the VM is running code in one.
1579 * This is called from the JNI DestroyJavaVM function, which can be
1580 * called from any thread. (In practice, this will usually run in the
1581 * same thread that started the VM, a/k/a the main thread, but we don't
1582 * want to assume that.)
1584 void dvmShutdown(void)
1586 LOGV("VM shutting down\n");
1588 if (CALC_CACHE_STATS)
1589 dvmDumpAtomicCacheStats(gDvm.instanceofCache);
1592 * Stop our internal threads.
1594 dvmGcThreadShutdown();
1596 if (gDvm.jdwpState != NULL)
1597 dvmJdwpShutdown(gDvm.jdwpState);
1598 free(gDvm.jdwpHost);
1599 gDvm.jdwpHost = NULL;
1600 free(gDvm.jniTrace);
1601 gDvm.jniTrace = NULL;
1602 free(gDvm.stackTraceFile);
1603 gDvm.stackTraceFile = NULL;
1605 /* tell signal catcher to shut down if it was started */
1606 dvmSignalCatcherShutdown();
1608 /* shut down stdout/stderr conversion */
1609 dvmStdioConverterShutdown();
1612 if (gDvm.executionMode == kExecutionModeJit) {
1613 /* shut down the compiler thread */
1614 dvmCompilerShutdown();
1619 * Kill any daemon threads that still exist. Actively-running threads
1620 * are likely to crash the process if they continue to execute while
1621 * the VM shuts down.
1625 if (gDvm.verboseShutdown)
1626 LOGD("VM cleaning up\n");
1628 dvmDebuggerShutdown();
1629 dvmReflectShutdown();
1630 dvmProfilingShutdown();
1632 dvmStringInternShutdown();
1633 dvmExceptionShutdown();
1634 dvmThreadShutdown();
1636 dvmVerificationShutdown();
1637 dvmRegisterMapShutdown();
1638 dvmInstanceofShutdown();
1639 dvmInlineNativeShutdown();
1641 dvmAllocTrackerShutdown();
1642 dvmPropertiesShutdown();
1644 /* these must happen AFTER dvmClassShutdown has walked through class data */
1645 dvmNativeShutdown();
1646 dvmInternalNativeShutdown();
1648 free(gDvm.bootClassPathStr);
1649 free(gDvm.classPathStr);
1651 freeAssertionCtrl();
1654 * We want valgrind to report anything we forget to free as "definitely
1655 * lost". If there's a pointer in the global chunk, it would be reported
1656 * as "still reachable". Erasing the memory fixes this.
1658 * This must be erased to zero if we want to restart the VM within this
1661 memset(&gDvm, 0xcd, sizeof(gDvm));
1666 * fprintf() wrapper that calls through the JNI-specified vfprintf hook if
1667 * one was specified.
1669 int dvmFprintf(FILE* fp, const char* format, ...)
1674 va_start(args, format);
1675 if (gDvm.vfprintfHook != NULL)
1676 result = (*gDvm.vfprintfHook)(fp, format, args);
1678 result = vfprintf(fp, format, args);
1685 * Abort the VM. We get here on fatal errors. Try very hard not to use
1686 * this; whenever possible, return an error to somebody responsible.
1690 LOGE("VM aborting\n");
1692 fflush(NULL); // flush all open file buffers
1694 /* JNI-supplied abort hook gets right of first refusal */
1695 if (gDvm.abortHook != NULL)
1696 (*gDvm.abortHook)();
1699 * If we call abort(), all threads in the process receives a SIBABRT.
1700 * debuggerd dumps the stack trace of the main thread, whether or not
1701 * that was the thread that failed.
1703 * By stuffing a value into a bogus address, we cause a segmentation
1704 * fault in the current thread, and get a useful log from debuggerd.
1705 * We can also trivially tell the difference between a VM crash and
1706 * a deliberate abort by looking at the fault address.
1708 *((char*)0xdeadd00d) = 38;