comparison src/os/solaris/launcher/java.c @ 0:a61af66fc99e

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author duke
date Sat, 01 Dec 2007 00:00:00 +0000
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children f008d3631bd1
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-1:000000000000 0:5be4f93c341a
1 /*
2 * Copyright 1998-2005 Sun Microsystems, Inc. All Rights Reserved.
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 *
19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
20 * CA 95054 USA or visit www.sun.com if you need additional information or
21 * have any questions.
22 *
23 */
24
25 /*
26 * Gamma (Hotspot internal engineering test) launcher based on 1.6.0-b28 JDK,
27 * search "GAMMA" for gamma specific changes.
28 *
29 * GAMMA: gamma launcher is much simpler than regular java launcher in that
30 * JVM is either statically linked in or it is installed in the
31 * same directory where the launcher exists, so we don't have to
32 * worry about choosing the right JVM based on command line flag, jar
33 * file and/or ergonomics. Intead of removing unused logic from source
34 * they are commented out with #ifndef GAMMA, hopefully it'll be easier
35 * to maintain this file in sync with regular JDK launcher.
36 */
37
38 /*
39 * Shared source for 'java' command line tool.
40 *
41 * If JAVA_ARGS is defined, then acts as a launcher for applications. For
42 * instance, the JDK command line tools such as javac and javadoc (see
43 * makefiles for more details) are built with this program. Any arguments
44 * prefixed with '-J' will be passed directly to the 'java' command.
45 */
46
47 #ifdef GAMMA
48 # ifdef JAVA_ARGS
49 # error Do NOT define JAVA_ARGS when building gamma launcher
50 # endif
51 # if !defined(LINK_INTO_AOUT) && !defined(LINK_INTO_LIBJVM)
52 # error Either LINK_INTO_AOUT or LINK_INTO_LIBJVM must be defined
53 # endif
54 #endif
55
56 /*
57 * One job of the launcher is to remove command line options which the
58 * vm does not understand and will not process. These options include
59 * options which select which style of vm is run (e.g. -client and
60 * -server) as well as options which select the data model to use.
61 * Additionally, for tools which invoke an underlying vm "-J-foo"
62 * options are turned into "-foo" options to the vm. This option
63 * filtering is handled in a number of places in the launcher, some of
64 * it in machine-dependent code. In this file, the function
65 * CheckJVMType removes vm style options and TranslateDashJArgs
66 * removes "-J" prefixes. On unix platforms, the
67 * CreateExecutionEnvironment function from the unix java_md.c file
68 * processes and removes -d<n> options. However, in case
69 * CreateExecutionEnvironment does not need to exec because
70 * LD_LIBRARY_PATH is set acceptably and the data model does not need
71 * to be changed, ParseArguments will screen out the redundant -d<n>
72 * options and prevent them from being passed to the vm; this is done
73 * by using the machine-dependent call
74 * RemovableMachineDependentOption.
75 */
76
77 #include <stdio.h>
78 #include <stdlib.h>
79 #include <string.h>
80
81 #include <jni.h>
82 #include "java.h"
83
84 #ifndef GAMMA
85 #include "manifest_info.h"
86 #include "version_comp.h"
87 #endif
88
89 #ifndef FULL_VERSION
90 #define FULL_VERSION JDK_MAJOR_VERSION "." JDK_MINOR_VERSION
91 #endif
92
93 /*
94 * The following environment variable is used to influence the behavior
95 * of the jre exec'd through the SelectVersion routine. The command line
96 * options which specify the version are not passed to the exec'd version,
97 * because that jre may be an older version which wouldn't recognize them.
98 * This environment variable is known to this (and later) version and serves
99 * to suppress the version selection code. This is not only for efficiency,
100 * but also for correctness, since any command line options have been
101 * removed which would cause any value found in the manifest to be used.
102 * This would be incorrect because the command line options are defined
103 * to take precedence.
104 *
105 * The value associated with this environment variable is the MainClass
106 * name from within the executable jar file (if any). This is strictly a
107 * performance enhancement to avoid re-reading the jar file manifest.
108 *
109 * A NOTE TO DEVELOPERS: For performance reasons it is important that
110 * the program image remain relatively small until after SelectVersion
111 * CreateExecutionEnvironment have finished their possibly recursive
112 * processing. Watch everything, but resist all temptations to use Java
113 * interfaces.
114 */
115 #define ENV_ENTRY "_JAVA_VERSION_SET"
116
117 static jboolean printVersion = JNI_FALSE; /* print and exit */
118 static jboolean showVersion = JNI_FALSE; /* print but continue */
119 static char *progname;
120 jboolean _launcher_debug = JNI_FALSE;
121
122 /*
123 * List of VM options to be specified when the VM is created.
124 */
125 static JavaVMOption *options;
126 static int numOptions, maxOptions;
127
128 /*
129 * Prototypes for functions internal to launcher.
130 */
131 static void AddOption(char *str, void *info);
132 static void SetClassPath(char *s);
133 static void SelectVersion(int argc, char **argv, char **main_class);
134 static jboolean ParseArguments(int *pargc, char ***pargv, char **pjarfile,
135 char **pclassname, int *pret);
136 static jboolean InitializeJVM(JavaVM **pvm, JNIEnv **penv,
137 InvocationFunctions *ifn);
138 static jstring NewPlatformString(JNIEnv *env, char *s);
139 static jobjectArray NewPlatformStringArray(JNIEnv *env, char **strv, int strc);
140 static jclass LoadClass(JNIEnv *env, char *name);
141 static jstring GetMainClassName(JNIEnv *env, char *jarname);
142 static void SetJavaCommandLineProp(char* classname, char* jarfile, int argc, char** argv);
143 #ifdef GAMMA
144 static void SetJavaLauncherProp(void);
145 #endif
146
147 #ifdef JAVA_ARGS
148 static void TranslateDashJArgs(int *pargc, char ***pargv);
149 static jboolean AddApplicationOptions(void);
150 #endif
151
152 static void PrintJavaVersion(JNIEnv *env);
153 static void PrintUsage(void);
154 static jint PrintXUsage(void);
155
156 static void SetPaths(int argc, char **argv);
157
158 /* Maximum supported entries from jvm.cfg. */
159 #define INIT_MAX_KNOWN_VMS 10
160 /* Values for vmdesc.flag */
161 #define VM_UNKNOWN -1
162 #define VM_KNOWN 0
163 #define VM_ALIASED_TO 1
164 #define VM_WARN 2
165 #define VM_ERROR 3
166 #define VM_IF_SERVER_CLASS 4
167 #define VM_IGNORE 5
168 struct vmdesc {
169 char *name;
170 int flag;
171 char *alias;
172 char *server_class;
173 };
174 static struct vmdesc *knownVMs = NULL;
175 static int knownVMsCount = 0;
176 static int knownVMsLimit = 0;
177
178 static void GrowKnownVMs();
179 static int KnownVMIndex(const char* name);
180 static void FreeKnownVMs();
181
182 jboolean ServerClassMachine();
183
184 /* flag which if set suppresses error messages from the launcher */
185 static int noExitErrorMessage = 0;
186
187 /*
188 * Entry point.
189 */
190 int
191 main(int argc, char ** argv)
192 {
193 JavaVM *vm = 0;
194 JNIEnv *env = 0;
195 char *jarfile = 0;
196 char *classname = 0;
197 char *s = 0;
198 char *main_class = NULL;
199 jstring mainClassName;
200 jclass mainClass;
201 jmethodID mainID;
202 jobjectArray mainArgs;
203 int ret;
204 InvocationFunctions ifn;
205 jlong start, end;
206 char jrepath[MAXPATHLEN], jvmpath[MAXPATHLEN];
207 char ** original_argv = argv;
208
209 /*
210 * Error message to print or display; by default the message will
211 * only be displayed in a window.
212 */
213 char * message = "Fatal exception occurred. Program will exit.";
214 jboolean messageDest = JNI_FALSE;
215
216 if (getenv("_JAVA_LAUNCHER_DEBUG") != 0) {
217 _launcher_debug = JNI_TRUE;
218 printf("----_JAVA_LAUNCHER_DEBUG----\n");
219 }
220
221 #ifndef GAMMA
222 /*
223 * Make sure the specified version of the JRE is running.
224 *
225 * There are three things to note about the SelectVersion() routine:
226 * 1) If the version running isn't correct, this routine doesn't
227 * return (either the correct version has been exec'd or an error
228 * was issued).
229 * 2) Argc and Argv in this scope are *not* altered by this routine.
230 * It is the responsibility of subsequent code to ignore the
231 * arguments handled by this routine.
232 * 3) As a side-effect, the variable "main_class" is guaranteed to
233 * be set (if it should ever be set). This isn't exactly the
234 * poster child for structured programming, but it is a small
235 * price to pay for not processing a jar file operand twice.
236 * (Note: This side effect has been disabled. See comment on
237 * bugid 5030265 below.)
238 */
239 SelectVersion(argc, argv, &main_class);
240 #endif /* ifndef GAMMA */
241
242 /* copy original argv */
243 {
244 int i;
245 original_argv = (char**)MemAlloc(sizeof(char*)*(argc+1));
246 for(i = 0; i < argc+1; i++)
247 original_argv[i] = argv[i];
248 }
249
250 CreateExecutionEnvironment(&argc, &argv,
251 jrepath, sizeof(jrepath),
252 jvmpath, sizeof(jvmpath),
253 original_argv);
254 ifn.CreateJavaVM = 0;
255 ifn.GetDefaultJavaVMInitArgs = 0;
256
257 if (_launcher_debug)
258 start = CounterGet();
259 if (!LoadJavaVM(jvmpath, &ifn)) {
260 exit(6);
261 }
262 if (_launcher_debug) {
263 end = CounterGet();
264 printf("%ld micro seconds to LoadJavaVM\n",
265 (long)(jint)Counter2Micros(end-start));
266 }
267
268 #ifdef JAVA_ARGS /* javac, jar and friends. */
269 progname = "java";
270 #else /* java, oldjava, javaw and friends */
271 #ifdef PROGNAME
272 progname = PROGNAME;
273 #else
274 progname = *argv;
275 if ((s = strrchr(progname, FILE_SEPARATOR)) != 0) {
276 progname = s + 1;
277 }
278 #endif /* PROGNAME */
279 #endif /* JAVA_ARGS */
280 ++argv;
281 --argc;
282
283 #ifdef JAVA_ARGS
284 /* Preprocess wrapper arguments */
285 TranslateDashJArgs(&argc, &argv);
286 if (!AddApplicationOptions()) {
287 exit(1);
288 }
289 #endif
290
291 /* Set default CLASSPATH */
292 if ((s = getenv("CLASSPATH")) == 0) {
293 s = ".";
294 }
295 #ifndef JAVA_ARGS
296 SetClassPath(s);
297 #endif
298
299 /*
300 * Parse command line options; if the return value of
301 * ParseArguments is false, the program should exit.
302 */
303 if (!ParseArguments(&argc, &argv, &jarfile, &classname, &ret)) {
304 exit(ret);
305 }
306
307 /* Override class path if -jar flag was specified */
308 if (jarfile != 0) {
309 SetClassPath(jarfile);
310 }
311
312 /* set the -Dsun.java.command pseudo property */
313 SetJavaCommandLineProp(classname, jarfile, argc, argv);
314
315 #ifdef GAMMA
316 /* Set the -Dsun.java.launcher pseudo property */
317 SetJavaLauncherProp();
318 #endif
319
320 /*
321 * Done with all command line processing and potential re-execs so
322 * clean up the environment.
323 */
324 (void)UnsetEnv(ENV_ENTRY);
325
326 /* Initialize the virtual machine */
327
328 if (_launcher_debug)
329 start = CounterGet();
330 if (!InitializeJVM(&vm, &env, &ifn)) {
331 ReportErrorMessage("Could not create the Java virtual machine.",
332 JNI_TRUE);
333 exit(1);
334 }
335
336 if (printVersion || showVersion) {
337 PrintJavaVersion(env);
338 if ((*env)->ExceptionOccurred(env)) {
339 ReportExceptionDescription(env);
340 goto leave;
341 }
342 if (printVersion) {
343 ret = 0;
344 message = NULL;
345 goto leave;
346 }
347 if (showVersion) {
348 fprintf(stderr, "\n");
349 }
350 }
351
352 /* If the user specified neither a class name nor a JAR file */
353 if (jarfile == 0 && classname == 0) {
354 PrintUsage();
355 message = NULL;
356 goto leave;
357 }
358
359 #ifndef GAMMA
360 FreeKnownVMs(); /* after last possible PrintUsage() */
361 #endif
362
363 if (_launcher_debug) {
364 end = CounterGet();
365 printf("%ld micro seconds to InitializeJVM\n",
366 (long)(jint)Counter2Micros(end-start));
367 }
368
369 /* At this stage, argc/argv have the applications' arguments */
370 if (_launcher_debug) {
371 int i = 0;
372 printf("Main-Class is '%s'\n", classname ? classname : "");
373 printf("Apps' argc is %d\n", argc);
374 for (; i < argc; i++) {
375 printf(" argv[%2d] = '%s'\n", i, argv[i]);
376 }
377 }
378
379 ret = 1;
380
381 /*
382 * Get the application's main class.
383 *
384 * See bugid 5030265. The Main-Class name has already been parsed
385 * from the manifest, but not parsed properly for UTF-8 support.
386 * Hence the code here ignores the value previously extracted and
387 * uses the pre-existing code to reextract the value. This is
388 * possibly an end of release cycle expedient. However, it has
389 * also been discovered that passing some character sets through
390 * the environment has "strange" behavior on some variants of
391 * Windows. Hence, maybe the manifest parsing code local to the
392 * launcher should never be enhanced.
393 *
394 * Hence, future work should either:
395 * 1) Correct the local parsing code and verify that the
396 * Main-Class attribute gets properly passed through
397 * all environments,
398 * 2) Remove the vestages of maintaining main_class through
399 * the environment (and remove these comments).
400 */
401 if (jarfile != 0) {
402 mainClassName = GetMainClassName(env, jarfile);
403 if ((*env)->ExceptionOccurred(env)) {
404 ReportExceptionDescription(env);
405 goto leave;
406 }
407 if (mainClassName == NULL) {
408 const char * format = "Failed to load Main-Class manifest "
409 "attribute from\n%s";
410 message = (char*)MemAlloc((strlen(format) + strlen(jarfile)) *
411 sizeof(char));
412 sprintf(message, format, jarfile);
413 messageDest = JNI_TRUE;
414 goto leave;
415 }
416 classname = (char *)(*env)->GetStringUTFChars(env, mainClassName, 0);
417 if (classname == NULL) {
418 ReportExceptionDescription(env);
419 goto leave;
420 }
421 mainClass = LoadClass(env, classname);
422 if(mainClass == NULL) { /* exception occured */
423 ReportExceptionDescription(env);
424 message = "Could not find the main class. Program will exit.";
425 goto leave;
426 }
427 (*env)->ReleaseStringUTFChars(env, mainClassName, classname);
428 } else {
429 mainClassName = NewPlatformString(env, classname);
430 if (mainClassName == NULL) {
431 const char * format = "Failed to load Main Class: %s";
432 message = (char *)MemAlloc((strlen(format) + strlen(classname)) *
433 sizeof(char) );
434 sprintf(message, format, classname);
435 messageDest = JNI_TRUE;
436 goto leave;
437 }
438 classname = (char *)(*env)->GetStringUTFChars(env, mainClassName, 0);
439 if (classname == NULL) {
440 ReportExceptionDescription(env);
441 goto leave;
442 }
443 mainClass = LoadClass(env, classname);
444 if(mainClass == NULL) { /* exception occured */
445 ReportExceptionDescription(env);
446 message = "Could not find the main class. Program will exit.";
447 goto leave;
448 }
449 (*env)->ReleaseStringUTFChars(env, mainClassName, classname);
450 }
451
452 /* Get the application's main method */
453 mainID = (*env)->GetStaticMethodID(env, mainClass, "main",
454 "([Ljava/lang/String;)V");
455 if (mainID == NULL) {
456 if ((*env)->ExceptionOccurred(env)) {
457 ReportExceptionDescription(env);
458 } else {
459 message = "No main method found in specified class.";
460 messageDest = JNI_TRUE;
461 }
462 goto leave;
463 }
464
465 { /* Make sure the main method is public */
466 jint mods;
467 jmethodID mid;
468 jobject obj = (*env)->ToReflectedMethod(env, mainClass,
469 mainID, JNI_TRUE);
470
471 if( obj == NULL) { /* exception occurred */
472 ReportExceptionDescription(env);
473 goto leave;
474 }
475
476 mid =
477 (*env)->GetMethodID(env,
478 (*env)->GetObjectClass(env, obj),
479 "getModifiers", "()I");
480 if ((*env)->ExceptionOccurred(env)) {
481 ReportExceptionDescription(env);
482 goto leave;
483 }
484
485 mods = (*env)->CallIntMethod(env, obj, mid);
486 if ((mods & 1) == 0) { /* if (!Modifier.isPublic(mods)) ... */
487 message = "Main method not public.";
488 messageDest = JNI_TRUE;
489 goto leave;
490 }
491 }
492
493 /* Build argument array */
494 mainArgs = NewPlatformStringArray(env, argv, argc);
495 if (mainArgs == NULL) {
496 ReportExceptionDescription(env);
497 goto leave;
498 }
499
500 /* Invoke main method. */
501 (*env)->CallStaticVoidMethod(env, mainClass, mainID, mainArgs);
502
503 /*
504 * The launcher's exit code (in the absence of calls to
505 * System.exit) will be non-zero if main threw an exception.
506 */
507 ret = (*env)->ExceptionOccurred(env) == NULL ? 0 : 1;
508
509 /*
510 * Detach the main thread so that it appears to have ended when
511 * the application's main method exits. This will invoke the
512 * uncaught exception handler machinery if main threw an
513 * exception. An uncaught exception handler cannot change the
514 * launcher's return code except by calling System.exit.
515 */
516 if ((*vm)->DetachCurrentThread(vm) != 0) {
517 message = "Could not detach main thread.";
518 messageDest = JNI_TRUE;
519 ret = 1;
520 goto leave;
521 }
522
523 message = NULL;
524
525 leave:
526 /*
527 * Wait for all non-daemon threads to end, then destroy the VM.
528 * This will actually create a trivial new Java waiter thread
529 * named "DestroyJavaVM", but this will be seen as a different
530 * thread from the one that executed main, even though they are
531 * the same C thread. This allows mainThread.join() and
532 * mainThread.isAlive() to work as expected.
533 */
534 (*vm)->DestroyJavaVM(vm);
535
536 if(message != NULL && !noExitErrorMessage)
537 ReportErrorMessage(message, messageDest);
538 return ret;
539 }
540
541
542 #ifndef GAMMA
543 /*
544 * Checks the command line options to find which JVM type was
545 * specified. If no command line option was given for the JVM type,
546 * the default type is used. The environment variable
547 * JDK_ALTERNATE_VM and the command line option -XXaltjvm= are also
548 * checked as ways of specifying which JVM type to invoke.
549 */
550 char *
551 CheckJvmType(int *pargc, char ***argv, jboolean speculative) {
552 int i, argi;
553 int argc;
554 char **newArgv;
555 int newArgvIdx = 0;
556 int isVMType;
557 int jvmidx = -1;
558 char *jvmtype = getenv("JDK_ALTERNATE_VM");
559
560 argc = *pargc;
561
562 /* To make things simpler we always copy the argv array */
563 newArgv = MemAlloc((argc + 1) * sizeof(char *));
564
565 /* The program name is always present */
566 newArgv[newArgvIdx++] = (*argv)[0];
567
568 for (argi = 1; argi < argc; argi++) {
569 char *arg = (*argv)[argi];
570 isVMType = 0;
571
572 #ifdef JAVA_ARGS
573 if (arg[0] != '-') {
574 newArgv[newArgvIdx++] = arg;
575 continue;
576 }
577 #else
578 if (strcmp(arg, "-classpath") == 0 ||
579 strcmp(arg, "-cp") == 0) {
580 newArgv[newArgvIdx++] = arg;
581 argi++;
582 if (argi < argc) {
583 newArgv[newArgvIdx++] = (*argv)[argi];
584 }
585 continue;
586 }
587 if (arg[0] != '-') break;
588 #endif
589
590 /* Did the user pass an explicit VM type? */
591 i = KnownVMIndex(arg);
592 if (i >= 0) {
593 jvmtype = knownVMs[jvmidx = i].name + 1; /* skip the - */
594 isVMType = 1;
595 *pargc = *pargc - 1;
596 }
597
598 /* Did the user specify an "alternate" VM? */
599 else if (strncmp(arg, "-XXaltjvm=", 10) == 0 || strncmp(arg, "-J-XXaltjvm=", 12) == 0) {
600 isVMType = 1;
601 jvmtype = arg+((arg[1]=='X')? 10 : 12);
602 jvmidx = -1;
603 }
604
605 if (!isVMType) {
606 newArgv[newArgvIdx++] = arg;
607 }
608 }
609
610 /*
611 * Finish copying the arguments if we aborted the above loop.
612 * NOTE that if we aborted via "break" then we did NOT copy the
613 * last argument above, and in addition argi will be less than
614 * argc.
615 */
616 while (argi < argc) {
617 newArgv[newArgvIdx++] = (*argv)[argi];
618 argi++;
619 }
620
621 /* argv is null-terminated */
622 newArgv[newArgvIdx] = 0;
623
624 /* Copy back argv */
625 *argv = newArgv;
626 *pargc = newArgvIdx;
627
628 /* use the default VM type if not specified (no alias processing) */
629 if (jvmtype == NULL) {
630 char* result = knownVMs[0].name+1;
631 /* Use a different VM type if we are on a server class machine? */
632 if ((knownVMs[0].flag == VM_IF_SERVER_CLASS) &&
633 (ServerClassMachine() == JNI_TRUE)) {
634 result = knownVMs[0].server_class+1;
635 }
636 if (_launcher_debug) {
637 printf("Default VM: %s\n", result);
638 }
639 return result;
640 }
641
642 /* if using an alternate VM, no alias processing */
643 if (jvmidx < 0)
644 return jvmtype;
645
646 /* Resolve aliases first */
647 {
648 int loopCount = 0;
649 while (knownVMs[jvmidx].flag == VM_ALIASED_TO) {
650 int nextIdx = KnownVMIndex(knownVMs[jvmidx].alias);
651
652 if (loopCount > knownVMsCount) {
653 if (!speculative) {
654 ReportErrorMessage("Error: Corrupt jvm.cfg file; cycle in alias list.",
655 JNI_TRUE);
656 exit(1);
657 } else {
658 return "ERROR";
659 /* break; */
660 }
661 }
662
663 if (nextIdx < 0) {
664 if (!speculative) {
665 ReportErrorMessage2("Error: Unable to resolve VM alias %s",
666 knownVMs[jvmidx].alias, JNI_TRUE);
667 exit(1);
668 } else {
669 return "ERROR";
670 }
671 }
672 jvmidx = nextIdx;
673 jvmtype = knownVMs[jvmidx].name+1;
674 loopCount++;
675 }
676 }
677
678 switch (knownVMs[jvmidx].flag) {
679 case VM_WARN:
680 if (!speculative) {
681 fprintf(stderr, "Warning: %s VM not supported; %s VM will be used\n",
682 jvmtype, knownVMs[0].name + 1);
683 }
684 /* fall through */
685 case VM_IGNORE:
686 jvmtype = knownVMs[jvmidx=0].name + 1;
687 /* fall through */
688 case VM_KNOWN:
689 break;
690 case VM_ERROR:
691 if (!speculative) {
692 ReportErrorMessage2("Error: %s VM not supported", jvmtype, JNI_TRUE);
693 exit(1);
694 } else {
695 return "ERROR";
696 }
697 }
698
699 return jvmtype;
700 }
701 #endif /* ifndef GAMMA */
702
703 /*
704 * Adds a new VM option with the given given name and value.
705 */
706 static void
707 AddOption(char *str, void *info)
708 {
709 /*
710 * Expand options array if needed to accommodate at least one more
711 * VM option.
712 */
713 if (numOptions >= maxOptions) {
714 if (options == 0) {
715 maxOptions = 4;
716 options = MemAlloc(maxOptions * sizeof(JavaVMOption));
717 } else {
718 JavaVMOption *tmp;
719 maxOptions *= 2;
720 tmp = MemAlloc(maxOptions * sizeof(JavaVMOption));
721 memcpy(tmp, options, numOptions * sizeof(JavaVMOption));
722 free(options);
723 options = tmp;
724 }
725 }
726 options[numOptions].optionString = str;
727 options[numOptions++].extraInfo = info;
728 }
729
730 static void
731 SetClassPath(char *s)
732 {
733 char *def = MemAlloc(strlen(s) + 40);
734 sprintf(def, "-Djava.class.path=%s", s);
735 AddOption(def, NULL);
736 }
737
738 #ifndef GAMMA
739 /*
740 * The SelectVersion() routine ensures that an appropriate version of
741 * the JRE is running. The specification for the appropriate version
742 * is obtained from either the manifest of a jar file (preferred) or
743 * from command line options.
744 */
745 static void
746 SelectVersion(int argc, char **argv, char **main_class)
747 {
748 char *arg;
749 char **new_argv;
750 char **new_argp;
751 char *operand;
752 char *version = NULL;
753 char *jre = NULL;
754 int jarflag = 0;
755 int restrict_search = -1; /* -1 implies not known */
756 manifest_info info;
757 char env_entry[MAXNAMELEN + 24] = ENV_ENTRY "=";
758 char *env_in;
759 int res;
760
761 /*
762 * If the version has already been selected, set *main_class
763 * with the value passed through the environment (if any) and
764 * simply return.
765 */
766 if ((env_in = getenv(ENV_ENTRY)) != NULL) {
767 if (*env_in != '\0')
768 *main_class = strdup(env_in);
769 return;
770 }
771
772 /*
773 * Scan through the arguments for options relevant to multiple JRE
774 * support. For reference, the command line syntax is defined as:
775 *
776 * SYNOPSIS
777 * java [options] class [argument...]
778 *
779 * java [options] -jar file.jar [argument...]
780 *
781 * As the scan is performed, make a copy of the argument list with
782 * the version specification options (new to 1.5) removed, so that
783 * a version less than 1.5 can be exec'd.
784 */
785 new_argv = MemAlloc((argc + 1) * sizeof(char*));
786 new_argv[0] = argv[0];
787 new_argp = &new_argv[1];
788 argc--;
789 argv++;
790 while ((arg = *argv) != 0 && *arg == '-') {
791 if (strncmp(arg, "-version:", 9) == 0) {
792 version = arg + 9;
793 } else if (strcmp(arg, "-jre-restrict-search") == 0) {
794 restrict_search = 1;
795 } else if (strcmp(arg, "-no-jre-restrict-search") == 0) {
796 restrict_search = 0;
797 } else {
798 if (strcmp(arg, "-jar") == 0)
799 jarflag = 1;
800 /* deal with "unfortunate" classpath syntax */
801 if ((strcmp(arg, "-classpath") == 0 || strcmp(arg, "-cp") == 0) &&
802 (argc >= 2)) {
803 *new_argp++ = arg;
804 argc--;
805 argv++;
806 arg = *argv;
807 }
808 *new_argp++ = arg;
809 }
810 argc--;
811 argv++;
812 }
813 if (argc <= 0) { /* No operand? Possibly legit with -[full]version */
814 operand = NULL;
815 } else {
816 argc--;
817 *new_argp++ = operand = *argv++;
818 }
819 while (argc-- > 0) /* Copy over [argument...] */
820 *new_argp++ = *argv++;
821 *new_argp = NULL;
822
823 /*
824 * If there is a jar file, read the manifest. If the jarfile can't be
825 * read, the manifest can't be read from the jar file, or the manifest
826 * is corrupt, issue the appropriate error messages and exit.
827 *
828 * Even if there isn't a jar file, construct a manifest_info structure
829 * containing the command line information. It's a convenient way to carry
830 * this data around.
831 */
832 if (jarflag && operand) {
833 if ((res = parse_manifest(operand, &info)) != 0) {
834 if (res == -1)
835 ReportErrorMessage2("Unable to access jarfile %s",
836 operand, JNI_TRUE);
837 else
838 ReportErrorMessage2("Invalid or corrupt jarfile %s",
839 operand, JNI_TRUE);
840 exit(1);
841 }
842 } else {
843 info.manifest_version = NULL;
844 info.main_class = NULL;
845 info.jre_version = NULL;
846 info.jre_restrict_search = 0;
847 }
848
849 /*
850 * The JRE-Version and JRE-Restrict-Search values (if any) from the
851 * manifest are overwritten by any specified on the command line.
852 */
853 if (version != NULL)
854 info.jre_version = version;
855 if (restrict_search != -1)
856 info.jre_restrict_search = restrict_search;
857
858 /*
859 * "Valid" returns (other than unrecoverable errors) follow. Set
860 * main_class as a side-effect of this routine.
861 */
862 if (info.main_class != NULL)
863 *main_class = strdup(info.main_class);
864
865 /*
866 * If no version selection information is found either on the command
867 * line or in the manifest, simply return.
868 */
869 if (info.jre_version == NULL) {
870 free_manifest();
871 free(new_argv);
872 return;
873 }
874
875 /*
876 * Check for correct syntax of the version specification (JSR 56).
877 */
878 if (!valid_version_string(info.jre_version)) {
879 ReportErrorMessage2("Syntax error in version specification \"%s\"",
880 info.jre_version, JNI_TRUE);
881 exit(1);
882 }
883
884 /*
885 * Find the appropriate JVM on the system. Just to be as forgiving as
886 * possible, if the standard algorithms don't locate an appropriate
887 * jre, check to see if the one running will satisfy the requirements.
888 * This can happen on systems which haven't been set-up for multiple
889 * JRE support.
890 */
891 jre = LocateJRE(&info);
892 if (_launcher_debug)
893 printf("JRE-Version = %s, JRE-Restrict-Search = %s Selected = %s\n",
894 (info.jre_version?info.jre_version:"null"),
895 (info.jre_restrict_search?"true":"false"), (jre?jre:"null"));
896 if (jre == NULL) {
897 if (acceptable_release(FULL_VERSION, info.jre_version)) {
898 free_manifest();
899 free(new_argv);
900 return;
901 } else {
902 ReportErrorMessage2(
903 "Unable to locate JRE meeting specification \"%s\"",
904 info.jre_version, JNI_TRUE);
905 exit(1);
906 }
907 }
908
909 /*
910 * If I'm not the chosen one, exec the chosen one. Returning from
911 * ExecJRE indicates that I am indeed the chosen one.
912 *
913 * The private environment variable _JAVA_VERSION_SET is used to
914 * prevent the chosen one from re-reading the manifest file and
915 * using the values found within to override the (potential) command
916 * line flags stripped from argv (because the target may not
917 * understand them). Passing the MainClass value is an optimization
918 * to avoid locating, expanding and parsing the manifest extra
919 * times.
920 */
921 if (info.main_class != NULL)
922 (void)strcat(env_entry, info.main_class);
923 (void)putenv(env_entry);
924 ExecJRE(jre, new_argv);
925 free_manifest();
926 free(new_argv);
927 return;
928 }
929 #endif /* ifndef GAMMA */
930
931 /*
932 * Parses command line arguments. Returns JNI_FALSE if launcher
933 * should exit without starting vm (e.g. certain version and usage
934 * options); returns JNI_TRUE if vm needs to be started to process
935 * given options. *pret (the launcher process return value) is set to
936 * 0 for a normal exit.
937 */
938 static jboolean
939 ParseArguments(int *pargc, char ***pargv, char **pjarfile,
940 char **pclassname, int *pret)
941 {
942 int argc = *pargc;
943 char **argv = *pargv;
944 jboolean jarflag = JNI_FALSE;
945 char *arg;
946
947 *pret = 1;
948 while ((arg = *argv) != 0 && *arg == '-') {
949 argv++; --argc;
950 if (strcmp(arg, "-classpath") == 0 || strcmp(arg, "-cp") == 0) {
951 if (argc < 1) {
952 ReportErrorMessage2("%s requires class path specification",
953 arg, JNI_TRUE);
954 PrintUsage();
955 return JNI_FALSE;
956 }
957 SetClassPath(*argv);
958 argv++; --argc;
959 } else if (strcmp(arg, "-jar") == 0) {
960 jarflag = JNI_TRUE;
961 } else if (strcmp(arg, "-help") == 0 ||
962 strcmp(arg, "-h") == 0 ||
963 strcmp(arg, "-?") == 0) {
964 PrintUsage();
965 *pret = 0;
966 return JNI_FALSE;
967 } else if (strcmp(arg, "-version") == 0) {
968 printVersion = JNI_TRUE;
969 return JNI_TRUE;
970 } else if (strcmp(arg, "-showversion") == 0) {
971 showVersion = JNI_TRUE;
972 } else if (strcmp(arg, "-X") == 0) {
973 *pret = PrintXUsage();
974 return JNI_FALSE;
975 /*
976 * The following case provide backward compatibility with old-style
977 * command line options.
978 */
979 } else if (strcmp(arg, "-fullversion") == 0) {
980 fprintf(stderr, "%s full version \"%s\"\n", progname,
981 FULL_VERSION);
982 *pret = 0;
983 return JNI_FALSE;
984 } else if (strcmp(arg, "-verbosegc") == 0) {
985 AddOption("-verbose:gc", NULL);
986 } else if (strcmp(arg, "-t") == 0) {
987 AddOption("-Xt", NULL);
988 } else if (strcmp(arg, "-tm") == 0) {
989 AddOption("-Xtm", NULL);
990 } else if (strcmp(arg, "-debug") == 0) {
991 AddOption("-Xdebug", NULL);
992 } else if (strcmp(arg, "-noclassgc") == 0) {
993 AddOption("-Xnoclassgc", NULL);
994 } else if (strcmp(arg, "-Xfuture") == 0) {
995 AddOption("-Xverify:all", NULL);
996 } else if (strcmp(arg, "-verify") == 0) {
997 AddOption("-Xverify:all", NULL);
998 } else if (strcmp(arg, "-verifyremote") == 0) {
999 AddOption("-Xverify:remote", NULL);
1000 } else if (strcmp(arg, "-noverify") == 0) {
1001 AddOption("-Xverify:none", NULL);
1002 } else if (strcmp(arg, "-XXsuppressExitMessage") == 0) {
1003 noExitErrorMessage = 1;
1004 } else if (strncmp(arg, "-prof", 5) == 0) {
1005 char *p = arg + 5;
1006 char *tmp = MemAlloc(strlen(arg) + 50);
1007 if (*p) {
1008 sprintf(tmp, "-Xrunhprof:cpu=old,file=%s", p + 1);
1009 } else {
1010 sprintf(tmp, "-Xrunhprof:cpu=old,file=java.prof");
1011 }
1012 AddOption(tmp, NULL);
1013 } else if (strncmp(arg, "-ss", 3) == 0 ||
1014 strncmp(arg, "-oss", 4) == 0 ||
1015 strncmp(arg, "-ms", 3) == 0 ||
1016 strncmp(arg, "-mx", 3) == 0) {
1017 char *tmp = MemAlloc(strlen(arg) + 6);
1018 sprintf(tmp, "-X%s", arg + 1); /* skip '-' */
1019 AddOption(tmp, NULL);
1020 } else if (strcmp(arg, "-checksource") == 0 ||
1021 strcmp(arg, "-cs") == 0 ||
1022 strcmp(arg, "-noasyncgc") == 0) {
1023 /* No longer supported */
1024 fprintf(stderr,
1025 "Warning: %s option is no longer supported.\n",
1026 arg);
1027 } else if (strncmp(arg, "-version:", 9) == 0 ||
1028 strcmp(arg, "-no-jre-restrict-search") == 0 ||
1029 strcmp(arg, "-jre-restrict-search") == 0) {
1030 ; /* Ignore machine independent options already handled */
1031 } else if (RemovableMachineDependentOption(arg) ) {
1032 ; /* Do not pass option to vm. */
1033 }
1034 else {
1035 AddOption(arg, NULL);
1036 }
1037 }
1038
1039 if (--argc >= 0) {
1040 if (jarflag) {
1041 *pjarfile = *argv++;
1042 *pclassname = 0;
1043 } else {
1044 *pjarfile = 0;
1045 *pclassname = *argv++;
1046 }
1047 *pargc = argc;
1048 *pargv = argv;
1049 }
1050
1051 return JNI_TRUE;
1052 }
1053
1054 /*
1055 * Initializes the Java Virtual Machine. Also frees options array when
1056 * finished.
1057 */
1058 static jboolean
1059 InitializeJVM(JavaVM **pvm, JNIEnv **penv, InvocationFunctions *ifn)
1060 {
1061 JavaVMInitArgs args;
1062 jint r;
1063
1064 memset(&args, 0, sizeof(args));
1065 args.version = JNI_VERSION_1_2;
1066 args.nOptions = numOptions;
1067 args.options = options;
1068 args.ignoreUnrecognized = JNI_FALSE;
1069
1070 if (_launcher_debug) {
1071 int i = 0;
1072 printf("JavaVM args:\n ");
1073 printf("version 0x%08lx, ", (long)args.version);
1074 printf("ignoreUnrecognized is %s, ",
1075 args.ignoreUnrecognized ? "JNI_TRUE" : "JNI_FALSE");
1076 printf("nOptions is %ld\n", (long)args.nOptions);
1077 for (i = 0; i < numOptions; i++)
1078 printf(" option[%2d] = '%s'\n",
1079 i, args.options[i].optionString);
1080 }
1081
1082 r = ifn->CreateJavaVM(pvm, (void **)penv, &args);
1083 free(options);
1084 return r == JNI_OK;
1085 }
1086
1087
1088 #define NULL_CHECK0(e) if ((e) == 0) return 0
1089 #define NULL_CHECK(e) if ((e) == 0) return
1090
1091 /*
1092 * Returns a pointer to a block of at least 'size' bytes of memory.
1093 * Prints error message and exits if the memory could not be allocated.
1094 */
1095 void *
1096 MemAlloc(size_t size)
1097 {
1098 void *p = malloc(size);
1099 if (p == 0) {
1100 perror("malloc");
1101 exit(1);
1102 }
1103 return p;
1104 }
1105
1106 static jstring platformEncoding = NULL;
1107 static jstring getPlatformEncoding(JNIEnv *env) {
1108 if (platformEncoding == NULL) {
1109 jstring propname = (*env)->NewStringUTF(env, "sun.jnu.encoding");
1110 if (propname) {
1111 jclass cls;
1112 jmethodID mid;
1113 NULL_CHECK0 (cls = (*env)->FindClass(env, "java/lang/System"));
1114 NULL_CHECK0 (mid = (*env)->GetStaticMethodID(
1115 env, cls,
1116 "getProperty",
1117 "(Ljava/lang/String;)Ljava/lang/String;"));
1118 platformEncoding = (*env)->CallStaticObjectMethod (
1119 env, cls, mid, propname);
1120 }
1121 }
1122 return platformEncoding;
1123 }
1124
1125 static jboolean isEncodingSupported(JNIEnv *env, jstring enc) {
1126 jclass cls;
1127 jmethodID mid;
1128 NULL_CHECK0 (cls = (*env)->FindClass(env, "java/nio/charset/Charset"));
1129 NULL_CHECK0 (mid = (*env)->GetStaticMethodID(
1130 env, cls,
1131 "isSupported",
1132 "(Ljava/lang/String;)Z"));
1133 return (jboolean)(*env)->CallStaticObjectMethod (env, cls, mid, enc);
1134 }
1135
1136 /*
1137 * Returns a new Java string object for the specified platform string.
1138 */
1139 static jstring
1140 NewPlatformString(JNIEnv *env, char *s)
1141 {
1142 int len = (int)strlen(s);
1143 jclass cls;
1144 jmethodID mid;
1145 jbyteArray ary;
1146 jstring enc;
1147
1148 if (s == NULL)
1149 return 0;
1150 enc = getPlatformEncoding(env);
1151
1152 ary = (*env)->NewByteArray(env, len);
1153 if (ary != 0) {
1154 jstring str = 0;
1155 (*env)->SetByteArrayRegion(env, ary, 0, len, (jbyte *)s);
1156 if (!(*env)->ExceptionOccurred(env)) {
1157 #ifdef GAMMA
1158 /* We support running JVM with older JDK, so here we have to deal */
1159 /* with the case that sun.jnu.encoding is undefined (enc == NULL) */
1160 if (enc != NULL && isEncodingSupported(env, enc) == JNI_TRUE) {
1161 #else
1162 if (isEncodingSupported(env, enc) == JNI_TRUE) {
1163 #endif
1164 NULL_CHECK0(cls = (*env)->FindClass(env, "java/lang/String"));
1165 NULL_CHECK0(mid = (*env)->GetMethodID(env, cls, "<init>",
1166 "([BLjava/lang/String;)V"));
1167 str = (*env)->NewObject(env, cls, mid, ary, enc);
1168 } else {
1169 /*If the encoding specified in sun.jnu.encoding is not
1170 endorsed by "Charset.isSupported" we have to fall back
1171 to use String(byte[]) explicitly here without specifying
1172 the encoding name, in which the StringCoding class will
1173 pickup the iso-8859-1 as the fallback converter for us.
1174 */
1175 NULL_CHECK0(cls = (*env)->FindClass(env, "java/lang/String"));
1176 NULL_CHECK0(mid = (*env)->GetMethodID(env, cls, "<init>",
1177 "([B)V"));
1178 str = (*env)->NewObject(env, cls, mid, ary);
1179 }
1180 (*env)->DeleteLocalRef(env, ary);
1181 return str;
1182 }
1183 }
1184 return 0;
1185 }
1186
1187 /*
1188 * Returns a new array of Java string objects for the specified
1189 * array of platform strings.
1190 */
1191 static jobjectArray
1192 NewPlatformStringArray(JNIEnv *env, char **strv, int strc)
1193 {
1194 jarray cls;
1195 jarray ary;
1196 int i;
1197
1198 NULL_CHECK0(cls = (*env)->FindClass(env, "java/lang/String"));
1199 NULL_CHECK0(ary = (*env)->NewObjectArray(env, strc, cls, 0));
1200 for (i = 0; i < strc; i++) {
1201 jstring str = NewPlatformString(env, *strv++);
1202 NULL_CHECK0(str);
1203 (*env)->SetObjectArrayElement(env, ary, i, str);
1204 (*env)->DeleteLocalRef(env, str);
1205 }
1206 return ary;
1207 }
1208
1209 /*
1210 * Loads a class, convert the '.' to '/'.
1211 */
1212 static jclass
1213 LoadClass(JNIEnv *env, char *name)
1214 {
1215 char *buf = MemAlloc(strlen(name) + 1);
1216 char *s = buf, *t = name, c;
1217 jclass cls;
1218 jlong start, end;
1219
1220 if (_launcher_debug)
1221 start = CounterGet();
1222
1223 do {
1224 c = *t++;
1225 *s++ = (c == '.') ? '/' : c;
1226 } while (c != '\0');
1227 cls = (*env)->FindClass(env, buf);
1228 free(buf);
1229
1230 if (_launcher_debug) {
1231 end = CounterGet();
1232 printf("%ld micro seconds to load main class\n",
1233 (long)(jint)Counter2Micros(end-start));
1234 printf("----_JAVA_LAUNCHER_DEBUG----\n");
1235 }
1236
1237 return cls;
1238 }
1239
1240
1241 /*
1242 * Returns the main class name for the specified jar file.
1243 */
1244 static jstring
1245 GetMainClassName(JNIEnv *env, char *jarname)
1246 {
1247 #define MAIN_CLASS "Main-Class"
1248 jclass cls;
1249 jmethodID mid;
1250 jobject jar, man, attr;
1251 jstring str, result = 0;
1252
1253 NULL_CHECK0(cls = (*env)->FindClass(env, "java/util/jar/JarFile"));
1254 NULL_CHECK0(mid = (*env)->GetMethodID(env, cls, "<init>",
1255 "(Ljava/lang/String;)V"));
1256 NULL_CHECK0(str = NewPlatformString(env, jarname));
1257 NULL_CHECK0(jar = (*env)->NewObject(env, cls, mid, str));
1258 NULL_CHECK0(mid = (*env)->GetMethodID(env, cls, "getManifest",
1259 "()Ljava/util/jar/Manifest;"));
1260 man = (*env)->CallObjectMethod(env, jar, mid);
1261 if (man != 0) {
1262 NULL_CHECK0(mid = (*env)->GetMethodID(env,
1263 (*env)->GetObjectClass(env, man),
1264 "getMainAttributes",
1265 "()Ljava/util/jar/Attributes;"));
1266 attr = (*env)->CallObjectMethod(env, man, mid);
1267 if (attr != 0) {
1268 NULL_CHECK0(mid = (*env)->GetMethodID(env,
1269 (*env)->GetObjectClass(env, attr),
1270 "getValue",
1271 "(Ljava/lang/String;)Ljava/lang/String;"));
1272 NULL_CHECK0(str = NewPlatformString(env, MAIN_CLASS));
1273 result = (*env)->CallObjectMethod(env, attr, mid, str);
1274 }
1275 }
1276 return result;
1277 }
1278
1279 #ifdef JAVA_ARGS
1280 static char *java_args[] = JAVA_ARGS;
1281 static char *app_classpath[] = APP_CLASSPATH;
1282
1283 /*
1284 * For tools convert 'javac -J-ms32m' to 'java -ms32m ...'
1285 */
1286 static void
1287 TranslateDashJArgs(int *pargc, char ***pargv)
1288 {
1289 const int NUM_ARGS = (sizeof(java_args) / sizeof(char *));
1290 int argc = *pargc;
1291 char **argv = *pargv;
1292 int nargc = argc + NUM_ARGS;
1293 char **nargv = MemAlloc((nargc + 1) * sizeof(char *));
1294 int i;
1295
1296 *pargc = nargc;
1297 *pargv = nargv;
1298
1299 /* Copy the VM arguments (i.e. prefixed with -J) */
1300 for (i = 0; i < NUM_ARGS; i++) {
1301 char *arg = java_args[i];
1302 if (arg[0] == '-' && arg[1] == 'J') {
1303 *nargv++ = arg + 2;
1304 }
1305 }
1306
1307 for (i = 0; i < argc; i++) {
1308 char *arg = argv[i];
1309 if (arg[0] == '-' && arg[1] == 'J') {
1310 if (arg[2] == '\0') {
1311 ReportErrorMessage("Error: the -J option should not be "
1312 "followed by a space.", JNI_TRUE);
1313 exit(1);
1314 }
1315 *nargv++ = arg + 2;
1316 }
1317 }
1318
1319 /* Copy the rest of the arguments */
1320 for (i = 0; i < NUM_ARGS; i++) {
1321 char *arg = java_args[i];
1322 if (arg[0] != '-' || arg[1] != 'J') {
1323 *nargv++ = arg;
1324 }
1325 }
1326 for (i = 0; i < argc; i++) {
1327 char *arg = argv[i];
1328 if (arg[0] != '-' || arg[1] != 'J') {
1329 *nargv++ = arg;
1330 }
1331 }
1332 *nargv = 0;
1333 }
1334
1335 /*
1336 * For our tools, we try to add 3 VM options:
1337 * -Denv.class.path=<envcp>
1338 * -Dapplication.home=<apphome>
1339 * -Djava.class.path=<appcp>
1340 * <envcp> is the user's setting of CLASSPATH -- for instance the user
1341 * tells javac where to find binary classes through this environment
1342 * variable. Notice that users will be able to compile against our
1343 * tools classes (sun.tools.javac.Main) only if they explicitly add
1344 * tools.jar to CLASSPATH.
1345 * <apphome> is the directory where the application is installed.
1346 * <appcp> is the classpath to where our apps' classfiles are.
1347 */
1348 static jboolean
1349 AddApplicationOptions()
1350 {
1351 const int NUM_APP_CLASSPATH = (sizeof(app_classpath) / sizeof(char *));
1352 char *s, *envcp, *appcp, *apphome;
1353 char home[MAXPATHLEN]; /* application home */
1354 char separator[] = { PATH_SEPARATOR, '\0' };
1355 int size, i;
1356 int strlenHome;
1357
1358 s = getenv("CLASSPATH");
1359 if (s) {
1360 /* 40 for -Denv.class.path= */
1361 envcp = (char *)MemAlloc(strlen(s) + 40);
1362 sprintf(envcp, "-Denv.class.path=%s", s);
1363 AddOption(envcp, NULL);
1364 }
1365
1366 if (!GetApplicationHome(home, sizeof(home))) {
1367 ReportErrorMessage("Can't determine application home", JNI_TRUE);
1368 return JNI_FALSE;
1369 }
1370
1371 /* 40 for '-Dapplication.home=' */
1372 apphome = (char *)MemAlloc(strlen(home) + 40);
1373 sprintf(apphome, "-Dapplication.home=%s", home);
1374 AddOption(apphome, NULL);
1375
1376 /* How big is the application's classpath? */
1377 size = 40; /* 40: "-Djava.class.path=" */
1378 strlenHome = (int)strlen(home);
1379 for (i = 0; i < NUM_APP_CLASSPATH; i++) {
1380 size += strlenHome + (int)strlen(app_classpath[i]) + 1; /* 1: separator */
1381 }
1382 appcp = (char *)MemAlloc(size + 1);
1383 strcpy(appcp, "-Djava.class.path=");
1384 for (i = 0; i < NUM_APP_CLASSPATH; i++) {
1385 strcat(appcp, home); /* c:\program files\myapp */
1386 strcat(appcp, app_classpath[i]); /* \lib\myapp.jar */
1387 strcat(appcp, separator); /* ; */
1388 }
1389 appcp[strlen(appcp)-1] = '\0'; /* remove trailing path separator */
1390 AddOption(appcp, NULL);
1391 return JNI_TRUE;
1392 }
1393 #endif
1394
1395 /*
1396 * inject the -Dsun.java.command pseudo property into the args structure
1397 * this pseudo property is used in the HotSpot VM to expose the
1398 * Java class name and arguments to the main method to the VM. The
1399 * HotSpot VM uses this pseudo property to store the Java class name
1400 * (or jar file name) and the arguments to the class's main method
1401 * to the instrumentation memory region. The sun.java.command pseudo
1402 * property is not exported by HotSpot to the Java layer.
1403 */
1404 void
1405 SetJavaCommandLineProp(char *classname, char *jarfile,
1406 int argc, char **argv)
1407 {
1408
1409 int i = 0;
1410 size_t len = 0;
1411 char* javaCommand = NULL;
1412 char* dashDstr = "-Dsun.java.command=";
1413
1414 if (classname == NULL && jarfile == NULL) {
1415 /* unexpected, one of these should be set. just return without
1416 * setting the property
1417 */
1418 return;
1419 }
1420
1421 /* if the class name is not set, then use the jarfile name */
1422 if (classname == NULL) {
1423 classname = jarfile;
1424 }
1425
1426 /* determine the amount of memory to allocate assuming
1427 * the individual components will be space separated
1428 */
1429 len = strlen(classname);
1430 for (i = 0; i < argc; i++) {
1431 len += strlen(argv[i]) + 1;
1432 }
1433
1434 /* allocate the memory */
1435 javaCommand = (char*) MemAlloc(len + strlen(dashDstr) + 1);
1436
1437 /* build the -D string */
1438 *javaCommand = '\0';
1439 strcat(javaCommand, dashDstr);
1440 strcat(javaCommand, classname);
1441
1442 for (i = 0; i < argc; i++) {
1443 /* the components of the string are space separated. In
1444 * the case of embedded white space, the relationship of
1445 * the white space separated components to their true
1446 * positional arguments will be ambiguous. This issue may
1447 * be addressed in a future release.
1448 */
1449 strcat(javaCommand, " ");
1450 strcat(javaCommand, argv[i]);
1451 }
1452
1453 AddOption(javaCommand, NULL);
1454 }
1455
1456 /*
1457 * JVM wants to know launcher type, so tell it.
1458 */
1459 #ifdef GAMMA
1460 void SetJavaLauncherProp() {
1461 AddOption("-Dsun.java.launcher=" LAUNCHER_TYPE, NULL);
1462 }
1463 #endif
1464
1465 /*
1466 * Prints the version information from the java.version and other properties.
1467 */
1468 static void
1469 PrintJavaVersion(JNIEnv *env)
1470 {
1471 jclass ver;
1472 jmethodID print;
1473
1474 NULL_CHECK(ver = (*env)->FindClass(env, "sun/misc/Version"));
1475 NULL_CHECK(print = (*env)->GetStaticMethodID(env, ver, "print", "()V"));
1476
1477 (*env)->CallStaticVoidMethod(env, ver, print);
1478 }
1479
1480 /*
1481 * Prints default usage message.
1482 */
1483 static void
1484 PrintUsage(void)
1485 {
1486 int i;
1487
1488 fprintf(stdout,
1489 "Usage: %s [-options] class [args...]\n"
1490 " (to execute a class)\n"
1491 " or %s [-options] -jar jarfile [args...]\n"
1492 " (to execute a jar file)\n"
1493 "\n"
1494 "where options include:\n",
1495 progname,
1496 progname);
1497
1498 #ifndef GAMMA
1499 PrintMachineDependentOptions();
1500
1501 if ((knownVMs[0].flag == VM_KNOWN) ||
1502 (knownVMs[0].flag == VM_IF_SERVER_CLASS)) {
1503 fprintf(stdout, " %s\t to select the \"%s\" VM\n",
1504 knownVMs[0].name, knownVMs[0].name+1);
1505 }
1506 for (i=1; i<knownVMsCount; i++) {
1507 if (knownVMs[i].flag == VM_KNOWN)
1508 fprintf(stdout, " %s\t to select the \"%s\" VM\n",
1509 knownVMs[i].name, knownVMs[i].name+1);
1510 }
1511 for (i=1; i<knownVMsCount; i++) {
1512 if (knownVMs[i].flag == VM_ALIASED_TO)
1513 fprintf(stdout, " %s\t is a synonym for "
1514 "the \"%s\" VM [deprecated]\n",
1515 knownVMs[i].name, knownVMs[i].alias+1);
1516 }
1517
1518 /* The first known VM is the default */
1519 {
1520 const char* defaultVM = knownVMs[0].name+1;
1521 const char* punctuation = ".";
1522 const char* reason = "";
1523 if ((knownVMs[0].flag == VM_IF_SERVER_CLASS) &&
1524 (ServerClassMachine() == JNI_TRUE)) {
1525 defaultVM = knownVMs[0].server_class+1;
1526 punctuation = ", ";
1527 reason = "because you are running on a server-class machine.\n";
1528 }
1529 fprintf(stdout, " The default VM is %s%s\n",
1530 defaultVM, punctuation);
1531 fprintf(stdout, " %s\n",
1532 reason);
1533 }
1534 #endif /* ifndef GAMMA */
1535
1536 fprintf(stdout,
1537 " -cp <class search path of directories and zip/jar files>\n"
1538 " -classpath <class search path of directories and zip/jar files>\n"
1539 " A %c separated list of directories, JAR archives,\n"
1540 " and ZIP archives to search for class files.\n"
1541 " -D<name>=<value>\n"
1542 " set a system property\n"
1543 " -verbose[:class|gc|jni]\n"
1544 " enable verbose output\n"
1545 " -version print product version and exit\n"
1546 " -version:<value>\n"
1547 " require the specified version to run\n"
1548 " -showversion print product version and continue\n"
1549 " -jre-restrict-search | -jre-no-restrict-search\n"
1550 " include/exclude user private JREs in the version search\n"
1551 " -? -help print this help message\n"
1552 " -X print help on non-standard options\n"
1553 " -ea[:<packagename>...|:<classname>]\n"
1554 " -enableassertions[:<packagename>...|:<classname>]\n"
1555 " enable assertions\n"
1556 " -da[:<packagename>...|:<classname>]\n"
1557 " -disableassertions[:<packagename>...|:<classname>]\n"
1558 " disable assertions\n"
1559 " -esa | -enablesystemassertions\n"
1560 " enable system assertions\n"
1561 " -dsa | -disablesystemassertions\n"
1562 " disable system assertions\n"
1563 " -agentlib:<libname>[=<options>]\n"
1564 " load native agent library <libname>, e.g. -agentlib:hprof\n"
1565 " see also, -agentlib:jdwp=help and -agentlib:hprof=help\n"
1566 " -agentpath:<pathname>[=<options>]\n"
1567 " load native agent library by full pathname\n"
1568 " -javaagent:<jarpath>[=<options>]\n"
1569 " load Java programming language agent, see java.lang.instrument\n"
1570
1571 ,PATH_SEPARATOR);
1572 }
1573
1574 /*
1575 * Print usage message for -X options.
1576 */
1577 static jint
1578 PrintXUsage(void)
1579 {
1580 char path[MAXPATHLEN];
1581 char buf[128];
1582 size_t n;
1583 FILE *fp;
1584
1585 GetXUsagePath(path, sizeof(path));
1586 fp = fopen(path, "r");
1587 if (fp == 0) {
1588 fprintf(stderr, "Can't open %s\n", path);
1589 return 1;
1590 }
1591 while ((n = fread(buf, 1, sizeof(buf), fp)) != 0) {
1592 fwrite(buf, 1, n, stdout);
1593 }
1594 fclose(fp);
1595 return 0;
1596 }
1597
1598 #ifndef GAMMA
1599
1600 /*
1601 * Read the jvm.cfg file and fill the knownJVMs[] array.
1602 *
1603 * The functionality of the jvm.cfg file is subject to change without
1604 * notice and the mechanism will be removed in the future.
1605 *
1606 * The lexical structure of the jvm.cfg file is as follows:
1607 *
1608 * jvmcfg := { vmLine }
1609 * vmLine := knownLine
1610 * | aliasLine
1611 * | warnLine
1612 * | ignoreLine
1613 * | errorLine
1614 * | predicateLine
1615 * | commentLine
1616 * knownLine := flag "KNOWN" EOL
1617 * warnLine := flag "WARN" EOL
1618 * ignoreLine := flag "IGNORE" EOL
1619 * errorLine := flag "ERROR" EOL
1620 * aliasLine := flag "ALIASED_TO" flag EOL
1621 * predicateLine := flag "IF_SERVER_CLASS" flag EOL
1622 * commentLine := "#" text EOL
1623 * flag := "-" identifier
1624 *
1625 * The semantics are that when someone specifies a flag on the command line:
1626 * - if the flag appears on a knownLine, then the identifier is used as
1627 * the name of the directory holding the JVM library (the name of the JVM).
1628 * - if the flag appears as the first flag on an aliasLine, the identifier
1629 * of the second flag is used as the name of the JVM.
1630 * - if the flag appears on a warnLine, the identifier is used as the
1631 * name of the JVM, but a warning is generated.
1632 * - if the flag appears on an ignoreLine, the identifier is recognized as the
1633 * name of a JVM, but the identifier is ignored and the default vm used
1634 * - if the flag appears on an errorLine, an error is generated.
1635 * - if the flag appears as the first flag on a predicateLine, and
1636 * the machine on which you are running passes the predicate indicated,
1637 * then the identifier of the second flag is used as the name of the JVM,
1638 * otherwise the identifier of the first flag is used as the name of the JVM.
1639 * If no flag is given on the command line, the first vmLine of the jvm.cfg
1640 * file determines the name of the JVM.
1641 * PredicateLines are only interpreted on first vmLine of a jvm.cfg file,
1642 * since they only make sense if someone hasn't specified the name of the
1643 * JVM on the command line.
1644 *
1645 * The intent of the jvm.cfg file is to allow several JVM libraries to
1646 * be installed in different subdirectories of a single JRE installation,
1647 * for space-savings and convenience in testing.
1648 * The intent is explicitly not to provide a full aliasing or predicate
1649 * mechanism.
1650 */
1651 jint
1652 ReadKnownVMs(const char *jrepath, char * arch, jboolean speculative)
1653 {
1654 FILE *jvmCfg;
1655 char jvmCfgName[MAXPATHLEN+20];
1656 char line[MAXPATHLEN+20];
1657 int cnt = 0;
1658 int lineno = 0;
1659 jlong start, end;
1660 int vmType;
1661 char *tmpPtr;
1662 char *altVMName;
1663 char *serverClassVMName;
1664 static char *whiteSpace = " \t";
1665 if (_launcher_debug) {
1666 start = CounterGet();
1667 }
1668
1669 strcpy(jvmCfgName, jrepath);
1670 strcat(jvmCfgName, FILESEP "lib" FILESEP);
1671 strcat(jvmCfgName, arch);
1672 strcat(jvmCfgName, FILESEP "jvm.cfg");
1673
1674 jvmCfg = fopen(jvmCfgName, "r");
1675 if (jvmCfg == NULL) {
1676 if (!speculative) {
1677 ReportErrorMessage2("Error: could not open `%s'", jvmCfgName,
1678 JNI_TRUE);
1679 exit(1);
1680 } else {
1681 return -1;
1682 }
1683 }
1684 while (fgets(line, sizeof(line), jvmCfg) != NULL) {
1685 vmType = VM_UNKNOWN;
1686 lineno++;
1687 if (line[0] == '#')
1688 continue;
1689 if (line[0] != '-') {
1690 fprintf(stderr, "Warning: no leading - on line %d of `%s'\n",
1691 lineno, jvmCfgName);
1692 }
1693 if (cnt >= knownVMsLimit) {
1694 GrowKnownVMs(cnt);
1695 }
1696 line[strlen(line)-1] = '\0'; /* remove trailing newline */
1697 tmpPtr = line + strcspn(line, whiteSpace);
1698 if (*tmpPtr == 0) {
1699 fprintf(stderr, "Warning: missing VM type on line %d of `%s'\n",
1700 lineno, jvmCfgName);
1701 } else {
1702 /* Null-terminate this string for strdup below */
1703 *tmpPtr++ = 0;
1704 tmpPtr += strspn(tmpPtr, whiteSpace);
1705 if (*tmpPtr == 0) {
1706 fprintf(stderr, "Warning: missing VM type on line %d of `%s'\n",
1707 lineno, jvmCfgName);
1708 } else {
1709 if (!strncmp(tmpPtr, "KNOWN", strlen("KNOWN"))) {
1710 vmType = VM_KNOWN;
1711 } else if (!strncmp(tmpPtr, "ALIASED_TO", strlen("ALIASED_TO"))) {
1712 tmpPtr += strcspn(tmpPtr, whiteSpace);
1713 if (*tmpPtr != 0) {
1714 tmpPtr += strspn(tmpPtr, whiteSpace);
1715 }
1716 if (*tmpPtr == 0) {
1717 fprintf(stderr, "Warning: missing VM alias on line %d of `%s'\n",
1718 lineno, jvmCfgName);
1719 } else {
1720 /* Null terminate altVMName */
1721 altVMName = tmpPtr;
1722 tmpPtr += strcspn(tmpPtr, whiteSpace);
1723 *tmpPtr = 0;
1724 vmType = VM_ALIASED_TO;
1725 }
1726 } else if (!strncmp(tmpPtr, "WARN", strlen("WARN"))) {
1727 vmType = VM_WARN;
1728 } else if (!strncmp(tmpPtr, "IGNORE", strlen("IGNORE"))) {
1729 vmType = VM_IGNORE;
1730 } else if (!strncmp(tmpPtr, "ERROR", strlen("ERROR"))) {
1731 vmType = VM_ERROR;
1732 } else if (!strncmp(tmpPtr,
1733 "IF_SERVER_CLASS",
1734 strlen("IF_SERVER_CLASS"))) {
1735 tmpPtr += strcspn(tmpPtr, whiteSpace);
1736 if (*tmpPtr != 0) {
1737 tmpPtr += strspn(tmpPtr, whiteSpace);
1738 }
1739 if (*tmpPtr == 0) {
1740 fprintf(stderr, "Warning: missing server class VM on line %d of `%s'\n",
1741 lineno, jvmCfgName);
1742 } else {
1743 /* Null terminate server class VM name */
1744 serverClassVMName = tmpPtr;
1745 tmpPtr += strcspn(tmpPtr, whiteSpace);
1746 *tmpPtr = 0;
1747 vmType = VM_IF_SERVER_CLASS;
1748 }
1749 } else {
1750 fprintf(stderr, "Warning: unknown VM type on line %d of `%s'\n",
1751 lineno, &jvmCfgName[0]);
1752 vmType = VM_KNOWN;
1753 }
1754 }
1755 }
1756
1757 if (_launcher_debug)
1758 printf("jvm.cfg[%d] = ->%s<-\n", cnt, line);
1759 if (vmType != VM_UNKNOWN) {
1760 knownVMs[cnt].name = strdup(line);
1761 knownVMs[cnt].flag = vmType;
1762 switch (vmType) {
1763 default:
1764 break;
1765 case VM_ALIASED_TO:
1766 knownVMs[cnt].alias = strdup(altVMName);
1767 if (_launcher_debug) {
1768 printf(" name: %s vmType: %s alias: %s\n",
1769 knownVMs[cnt].name, "VM_ALIASED_TO", knownVMs[cnt].alias);
1770 }
1771 break;
1772 case VM_IF_SERVER_CLASS:
1773 knownVMs[cnt].server_class = strdup(serverClassVMName);
1774 if (_launcher_debug) {
1775 printf(" name: %s vmType: %s server_class: %s\n",
1776 knownVMs[cnt].name, "VM_IF_SERVER_CLASS", knownVMs[cnt].server_class);
1777 }
1778 break;
1779 }
1780 cnt++;
1781 }
1782 }
1783 fclose(jvmCfg);
1784 knownVMsCount = cnt;
1785
1786 if (_launcher_debug) {
1787 end = CounterGet();
1788 printf("%ld micro seconds to parse jvm.cfg\n",
1789 (long)(jint)Counter2Micros(end-start));
1790 }
1791
1792 return cnt;
1793 }
1794
1795
1796 static void
1797 GrowKnownVMs(int minimum)
1798 {
1799 struct vmdesc* newKnownVMs;
1800 int newMax;
1801
1802 newMax = (knownVMsLimit == 0 ? INIT_MAX_KNOWN_VMS : (2 * knownVMsLimit));
1803 if (newMax <= minimum) {
1804 newMax = minimum;
1805 }
1806 newKnownVMs = (struct vmdesc*) MemAlloc(newMax * sizeof(struct vmdesc));
1807 if (knownVMs != NULL) {
1808 memcpy(newKnownVMs, knownVMs, knownVMsLimit * sizeof(struct vmdesc));
1809 }
1810 free(knownVMs);
1811 knownVMs = newKnownVMs;
1812 knownVMsLimit = newMax;
1813 }
1814
1815
1816 /* Returns index of VM or -1 if not found */
1817 static int
1818 KnownVMIndex(const char* name)
1819 {
1820 int i;
1821 if (strncmp(name, "-J", 2) == 0) name += 2;
1822 for (i = 0; i < knownVMsCount; i++) {
1823 if (!strcmp(name, knownVMs[i].name)) {
1824 return i;
1825 }
1826 }
1827 return -1;
1828 }
1829
1830 static void
1831 FreeKnownVMs()
1832 {
1833 int i;
1834 for (i = 0; i < knownVMsCount; i++) {
1835 free(knownVMs[i].name);
1836 knownVMs[i].name = NULL;
1837 }
1838 free(knownVMs);
1839 }
1840
1841 #endif /* ifndef GAMMA */