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comparison: src/share/tools/launcher/java.c

src/share/tools/launcher/java.c

changeset 5115
e484fe2abebd
parent 4465
203f64878aab
equal deleted inserted replaced
5104:513a5298c1dd 5115:e484fe2abebd
1 /*
2 * Copyright (c) 1999, 2013, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 /*
26 * Gamma (Hotspot internal engineering test) launcher based on 6.0u22 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 TranslateApplicationArgs
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 <jvm.h>
83 #include "java.h"
84 #ifndef GAMMA
85 #include "manifest_info.h"
86 #include "version_comp.h"
87 #include "splashscreen.h"
88 #endif
89 #include "wildcard.h"
90
91 #ifndef FULL_VERSION
92 #define FULL_VERSION JDK_MAJOR_VERSION "." JDK_MINOR_VERSION
93 #endif
94
95 /*
96 * The following environment variable is used to influence the behavior
97 * of the jre exec'd through the SelectVersion routine. The command line
98 * options which specify the version are not passed to the exec'd version,
99 * because that jre may be an older version which wouldn't recognize them.
100 * This environment variable is known to this (and later) version and serves
101 * to suppress the version selection code. This is not only for efficiency,
102 * but also for correctness, since any command line options have been
103 * removed which would cause any value found in the manifest to be used.
104 * This would be incorrect because the command line options are defined
105 * to take precedence.
106 *
107 * The value associated with this environment variable is the MainClass
108 * name from within the executable jar file (if any). This is strictly a
109 * performance enhancement to avoid re-reading the jar file manifest.
110 *
111 * A NOTE TO DEVELOPERS: For performance reasons it is important that
112 * the program image remain relatively small until after SelectVersion
113 * CreateExecutionEnvironment have finished their possibly recursive
114 * processing. Watch everything, but resist all temptations to use Java
115 * interfaces.
116 */
117 #define ENV_ENTRY "_JAVA_VERSION_SET"
118
119 #ifndef GAMMA
120 #define SPLASH_FILE_ENV_ENTRY "_JAVA_SPLASH_FILE"
121 #define SPLASH_JAR_ENV_ENTRY "_JAVA_SPLASH_JAR"
122 #endif
123
124 static jboolean printVersion = JNI_FALSE; /* print and exit */
125 static jboolean showVersion = JNI_FALSE; /* print but continue */
126 static char *progname;
127 jboolean _launcher_debug = JNI_FALSE;
128
129 #ifndef GAMMA
130 /*
131 * Entries for splash screen environment variables.
132 * putenv is performed in SelectVersion. We need
133 * them in memory until UnsetEnv, so they are made static
134 * global instead of auto local.
135 */
136 static char* splash_file_entry = NULL;
137 static char* splash_jar_entry = NULL;
138 #endif
139
140 /*
141 * List of VM options to be specified when the VM is created.
142 */
143 static JavaVMOption *options;
144 static int numOptions, maxOptions;
145
146 /*
147 * Prototypes for functions internal to launcher.
148 */
149 static void SetClassPath(const char *s);
150 static void SelectVersion(int argc, char **argv, char **main_class);
151 static jboolean ParseArguments(int *pargc, char ***pargv, char **pjarfile,
152 char **pclassname, int *pret, const char *jvmpath);
153 static jboolean InitializeJVM(JavaVM **pvm, JNIEnv **penv,
154 InvocationFunctions *ifn);
155 static jstring NewPlatformString(JNIEnv *env, char *s);
156 static jobjectArray NewPlatformStringArray(JNIEnv *env, char **strv, int strc);
157 static jclass LoadClass(JNIEnv *env, char *name);
158 static jstring GetMainClassName(JNIEnv *env, char *jarname);
159 static void SetJavaCommandLineProp(char* classname, char* jarfile, int argc, char** argv);
160 static void SetJavaLauncherProp(void);
161
162 #ifdef JAVA_ARGS
163 static void TranslateApplicationArgs(int *pargc, char ***pargv);
164 static jboolean AddApplicationOptions(void);
165 #endif
166
167 static void PrintJavaVersion(JNIEnv *env);
168 static void PrintUsage(void);
169 static jint PrintXUsage(const char *jvmpath);
170
171 static void SetPaths(int argc, char **argv);
172
173 #ifndef GAMMA
174
175 /* Maximum supported entries from jvm.cfg. */
176 #define INIT_MAX_KNOWN_VMS 10
177 /* Values for vmdesc.flag */
178 #define VM_UNKNOWN -1
179 #define VM_KNOWN 0
180 #define VM_ALIASED_TO 1
181 #define VM_WARN 2
182 #define VM_ERROR 3
183 #define VM_IF_SERVER_CLASS 4
184 #define VM_IGNORE 5
185 struct vmdesc {
186 char *name;
187 int flag;
188 char *alias;
189 char *server_class;
190 };
191 static struct vmdesc *knownVMs = NULL;
192 static int knownVMsCount = 0;
193 static int knownVMsLimit = 0;
194
195 static void GrowKnownVMs();
196 static int KnownVMIndex(const char* name);
197 static void FreeKnownVMs();
198 static void ShowSplashScreen();
199
200 #endif /* ifndef GAMMA */
201
202 jboolean ServerClassMachine();
203
204 /* flag which if set suppresses error messages from the launcher */
205 static int noExitErrorMessage = 0;
206
207 /*
208 * Running Java code in primordial thread caused many problems. We will
209 * create a new thread to invoke JVM. See 6316197 for more information.
210 */
211 static jlong threadStackSize = 0; /* stack size of the new thread */
212
213 int JNICALL JavaMain(void * args); /* entry point */
214
215 struct JavaMainArgs {
216 int argc;
217 char ** argv;
218 char * jarfile;
219 char * classname;
220 InvocationFunctions ifn;
221 };
222
223 /*
224 * Entry point.
225 */
226 int
227 main(int argc, char ** argv)
228 {
229 char *jarfile = 0;
230 char *classname = 0;
231 char *s = 0;
232 char *main_class = NULL;
233 int ret;
234 InvocationFunctions ifn;
235 jlong start, end;
236 char jrepath[MAXPATHLEN], jvmpath[MAXPATHLEN];
237 char ** original_argv = argv;
238
239 if (getenv("_JAVA_LAUNCHER_DEBUG") != 0) {
240 _launcher_debug = JNI_TRUE;
241 printf("----_JAVA_LAUNCHER_DEBUG----\n");
242 }
243
244 #ifndef GAMMA
245 /*
246 * Make sure the specified version of the JRE is running.
247 *
248 * There are three things to note about the SelectVersion() routine:
249 * 1) If the version running isn't correct, this routine doesn't
250 * return (either the correct version has been exec'd or an error
251 * was issued).
252 * 2) Argc and Argv in this scope are *not* altered by this routine.
253 * It is the responsibility of subsequent code to ignore the
254 * arguments handled by this routine.
255 * 3) As a side-effect, the variable "main_class" is guaranteed to
256 * be set (if it should ever be set). This isn't exactly the
257 * poster child for structured programming, but it is a small
258 * price to pay for not processing a jar file operand twice.
259 * (Note: This side effect has been disabled. See comment on
260 * bugid 5030265 below.)
261 */
262 SelectVersion(argc, argv, &main_class);
263 #endif /* ifndef GAMMA */
264
265 /* copy original argv */
266 {
267 int i;
268 original_argv = (char**)JLI_MemAlloc(sizeof(char*)*(argc+1));
269 for(i = 0; i < argc+1; i++)
270 original_argv[i] = argv[i];
271 }
272
273 CreateExecutionEnvironment(&argc, &argv,
274 jrepath, sizeof(jrepath),
275 jvmpath, sizeof(jvmpath),
276 original_argv);
277
278 printf("Using java runtime at: %s\n", jrepath);
279
280 ifn.CreateJavaVM = 0;
281 ifn.GetDefaultJavaVMInitArgs = 0;
282
283 if (_launcher_debug)
284 start = CounterGet();
285 if (!LoadJavaVM(jvmpath, &ifn)) {
286 exit(6);
287 }
288 if (_launcher_debug) {
289 end = CounterGet();
290 printf("%ld micro seconds to LoadJavaVM\n",
291 (long)(jint)Counter2Micros(end-start));
292 }
293
294 #ifdef JAVA_ARGS /* javac, jar and friends. */
295 progname = "java";
296 #else /* java, oldjava, javaw and friends */
297 #ifdef PROGNAME
298 progname = PROGNAME;
299 #else
300 progname = *argv;
301 if ((s = strrchr(progname, FILE_SEPARATOR)) != 0) {
302 progname = s + 1;
303 }
304 #endif /* PROGNAME */
305 #endif /* JAVA_ARGS */
306 ++argv;
307 --argc;
308
309 #ifdef JAVA_ARGS
310 /* Preprocess wrapper arguments */
311 TranslateApplicationArgs(&argc, &argv);
312 if (!AddApplicationOptions()) {
313 exit(1);
314 }
315 #endif
316
317 /* Set default CLASSPATH */
318 if ((s = getenv("CLASSPATH")) == 0) {
319 s = ".";
320 }
321 #ifndef JAVA_ARGS
322 SetClassPath(s);
323 #endif
324
325 /*
326 * Parse command line options; if the return value of
327 * ParseArguments is false, the program should exit.
328 */
329 if (!ParseArguments(&argc, &argv, &jarfile, &classname, &ret, jvmpath)) {
330 exit(ret);
331 }
332
333 /* Override class path if -jar flag was specified */
334 if (jarfile != 0) {
335 SetClassPath(jarfile);
336 }
337
338 /* set the -Dsun.java.command pseudo property */
339 SetJavaCommandLineProp(classname, jarfile, argc, argv);
340
341 /* Set the -Dsun.java.launcher pseudo property */
342 SetJavaLauncherProp();
343
344 /* set the -Dsun.java.launcher.* platform properties */
345 SetJavaLauncherPlatformProps();
346
347 #ifndef GAMMA
348 /* Show the splash screen if needed */
349 ShowSplashScreen();
350 #endif
351
352 /*
353 * Done with all command line processing and potential re-execs so
354 * clean up the environment.
355 */
356 (void)UnsetEnv(ENV_ENTRY);
357 #ifndef GAMMA
358 (void)UnsetEnv(SPLASH_FILE_ENV_ENTRY);
359 (void)UnsetEnv(SPLASH_JAR_ENV_ENTRY);
360
361 JLI_MemFree(splash_jar_entry);
362 JLI_MemFree(splash_file_entry);
363 #endif
364
365 /*
366 * If user doesn't specify stack size, check if VM has a preference.
367 * Note that HotSpot no longer supports JNI_VERSION_1_1 but it will
368 * return its default stack size through the init args structure.
369 */
370 if (threadStackSize == 0) {
371 struct JDK1_1InitArgs args1_1;
372 memset((void*)&args1_1, 0, sizeof(args1_1));
373 args1_1.version = JNI_VERSION_1_1;
374 ifn.GetDefaultJavaVMInitArgs(&args1_1); /* ignore return value */
375 if (args1_1.javaStackSize > 0) {
376 threadStackSize = args1_1.javaStackSize;
377 }
378 }
379
380 { /* Create a new thread to create JVM and invoke main method */
381 struct JavaMainArgs args;
382
383 args.argc = argc;
384 args.argv = argv;
385 args.jarfile = jarfile;
386 args.classname = classname;
387 args.ifn = ifn;
388
389 return ContinueInNewThread(JavaMain, threadStackSize, (void*)&args);
390 }
391 }
392
393 int JNICALL
394 JavaMain(void * _args)
395 {
396 struct JavaMainArgs *args = (struct JavaMainArgs *)_args;
397 int argc = args->argc;
398 char **argv = args->argv;
399 char *jarfile = args->jarfile;
400 char *classname = args->classname;
401 InvocationFunctions ifn = args->ifn;
402
403 JavaVM *vm = 0;
404 JNIEnv *env = 0;
405 jstring mainClassName;
406 jclass mainClass;
407 jmethodID mainID;
408 jobjectArray mainArgs;
409 int ret = 0;
410 jlong start, end;
411
412 /*
413 * Error message to print or display; by default the message will
414 * only be displayed in a window.
415 */
416 char * message = "Fatal exception occurred. Program will exit.";
417 jboolean messageDest = JNI_FALSE;
418
419 /* Initialize the virtual machine */
420
421 if (_launcher_debug)
422 start = CounterGet();
423 if (!InitializeJVM(&vm, &env, &ifn)) {
424 ReportErrorMessage("Could not create the Java virtual machine.",
425 JNI_TRUE);
426 exit(1);
427 }
428
429 if (printVersion || showVersion) {
430 PrintJavaVersion(env);
431 if ((*env)->ExceptionOccurred(env)) {
432 ReportExceptionDescription(env);
433 goto leave;
434 }
435 if (printVersion) {
436 ret = 0;
437 message = NULL;
438 goto leave;
439 }
440 if (showVersion) {
441 fprintf(stderr, "\n");
442 }
443 }
444
445 /* If the user specified neither a class name nor a JAR file */
446 if (jarfile == 0 && classname == 0) {
447 PrintUsage();
448 message = NULL;
449 goto leave;
450 }
451
452 #ifndef GAMMA
453 FreeKnownVMs(); /* after last possible PrintUsage() */
454 #endif
455
456 if (_launcher_debug) {
457 end = CounterGet();
458 printf("%ld micro seconds to InitializeJVM\n",
459 (long)(jint)Counter2Micros(end-start));
460 }
461
462 /* At this stage, argc/argv have the applications' arguments */
463 if (_launcher_debug) {
464 int i = 0;
465 printf("Main-Class is '%s'\n", classname ? classname : "");
466 printf("Apps' argc is %d\n", argc);
467 for (; i < argc; i++) {
468 printf(" argv[%2d] = '%s'\n", i, argv[i]);
469 }
470 }
471
472 ret = 1;
473
474 /*
475 * Get the application's main class.
476 *
477 * See bugid 5030265. The Main-Class name has already been parsed
478 * from the manifest, but not parsed properly for UTF-8 support.
479 * Hence the code here ignores the value previously extracted and
480 * uses the pre-existing code to reextract the value. This is
481 * possibly an end of release cycle expedient. However, it has
482 * also been discovered that passing some character sets through
483 * the environment has "strange" behavior on some variants of
484 * Windows. Hence, maybe the manifest parsing code local to the
485 * launcher should never be enhanced.
486 *
487 * Hence, future work should either:
488 * 1) Correct the local parsing code and verify that the
489 * Main-Class attribute gets properly passed through
490 * all environments,
491 * 2) Remove the vestages of maintaining main_class through
492 * the environment (and remove these comments).
493 */
494 if (jarfile != 0) {
495 mainClassName = GetMainClassName(env, jarfile);
496 if ((*env)->ExceptionOccurred(env)) {
497 ReportExceptionDescription(env);
498 goto leave;
499 }
500 if (mainClassName == NULL) {
501 const char * format = "Failed to load Main-Class manifest "
502 "attribute from\n%s";
503 message = (char*)JLI_MemAlloc((strlen(format) + strlen(jarfile)) *
504 sizeof(char));
505 sprintf(message, format, jarfile);
506 messageDest = JNI_TRUE;
507 goto leave;
508 }
509 classname = (char *)(*env)->GetStringUTFChars(env, mainClassName, 0);
510 if (classname == NULL) {
511 ReportExceptionDescription(env);
512 goto leave;
513 }
514 mainClass = LoadClass(env, classname);
515 if(mainClass == NULL) { /* exception occured */
516 const char * format = "Could not find the main class: %s. Program will exit.";
517 ReportExceptionDescription(env);
518 message = (char *)JLI_MemAlloc((strlen(format) +
519 strlen(classname)) * sizeof(char) );
520 messageDest = JNI_TRUE;
521 sprintf(message, format, classname);
522 goto leave;
523 }
524 (*env)->ReleaseStringUTFChars(env, mainClassName, classname);
525 } else {
526 mainClassName = NewPlatformString(env, classname);
527 if (mainClassName == NULL) {
528 const char * format = "Failed to load Main Class: %s";
529 message = (char *)JLI_MemAlloc((strlen(format) + strlen(classname)) *
530 sizeof(char) );
531 sprintf(message, format, classname);
532 messageDest = JNI_TRUE;
533 goto leave;
534 }
535 classname = (char *)(*env)->GetStringUTFChars(env, mainClassName, 0);
536 if (classname == NULL) {
537 ReportExceptionDescription(env);
538 goto leave;
539 }
540 mainClass = LoadClass(env, classname);
541 if(mainClass == NULL) { /* exception occured */
542 const char * format = "Could not find the main class: %s. Program will exit.";
543 ReportExceptionDescription(env);
544 message = (char *)JLI_MemAlloc((strlen(format) +
545 strlen(classname)) * sizeof(char) );
546 messageDest = JNI_TRUE;
547 sprintf(message, format, classname);
548 goto leave;
549 }
550 (*env)->ReleaseStringUTFChars(env, mainClassName, classname);
551 }
552
553 /* Get the application's main method */
554 mainID = (*env)->GetStaticMethodID(env, mainClass, "main",
555 "([Ljava/lang/String;)V");
556 if (mainID == NULL) {
557 if ((*env)->ExceptionOccurred(env)) {
558 ReportExceptionDescription(env);
559 } else {
560 message = "No main method found in specified class.";
561 messageDest = JNI_TRUE;
562 }
563 goto leave;
564 }
565
566 { /* Make sure the main method is public */
567 jint mods;
568 jmethodID mid;
569 jobject obj = (*env)->ToReflectedMethod(env, mainClass,
570 mainID, JNI_TRUE);
571
572 if( obj == NULL) { /* exception occurred */
573 ReportExceptionDescription(env);
574 goto leave;
575 }
576
577 mid =
578 (*env)->GetMethodID(env,
579 (*env)->GetObjectClass(env, obj),
580 "getModifiers", "()I");
581 if ((*env)->ExceptionOccurred(env)) {
582 ReportExceptionDescription(env);
583 goto leave;
584 }
585
586 mods = (*env)->CallIntMethod(env, obj, mid);
587 if ((mods & 1) == 0) { /* if (!Modifier.isPublic(mods)) ... */
588 message = "Main method not public.";
589 messageDest = JNI_TRUE;
590 goto leave;
591 }
592 }
593
594 /* Build argument array */
595 mainArgs = NewPlatformStringArray(env, argv, argc);
596 if (mainArgs == NULL) {
597 ReportExceptionDescription(env);
598 goto leave;
599 }
600
601 /* Invoke main method. */
602 (*env)->CallStaticVoidMethod(env, mainClass, mainID, mainArgs);
603
604 /*
605 * The launcher's exit code (in the absence of calls to
606 * System.exit) will be non-zero if main threw an exception.
607 */
608 ret = (*env)->ExceptionOccurred(env) == NULL ? 0 : 1;
609
610 /*
611 * Detach the main thread so that it appears to have ended when
612 * the application's main method exits. This will invoke the
613 * uncaught exception handler machinery if main threw an
614 * exception. An uncaught exception handler cannot change the
615 * launcher's return code except by calling System.exit.
616 */
617 if ((*vm)->DetachCurrentThread(vm) != 0) {
618 message = "Could not detach main thread.";
619 messageDest = JNI_TRUE;
620 ret = 1;
621 goto leave;
622 }
623
624 message = NULL;
625
626 leave:
627 /*
628 * Wait for all non-daemon threads to end, then destroy the VM.
629 * This will actually create a trivial new Java waiter thread
630 * named "DestroyJavaVM", but this will be seen as a different
631 * thread from the one that executed main, even though they are
632 * the same C thread. This allows mainThread.join() and
633 * mainThread.isAlive() to work as expected.
634 */
635 (*vm)->DestroyJavaVM(vm);
636
637 if(message != NULL && !noExitErrorMessage)
638 ReportErrorMessage(message, messageDest);
639 return ret;
640 }
641
642 #ifndef GAMMA
643 /*
644 * Checks the command line options to find which JVM type was
645 * specified. If no command line option was given for the JVM type,
646 * the default type is used. The environment variable
647 * JDK_ALTERNATE_VM and the command line option -XXaltjvm= are also
648 * checked as ways of specifying which JVM type to invoke.
649 */
650 char *
651 CheckJvmType(int *pargc, char ***argv, jboolean speculative) {
652 int i, argi;
653 int argc;
654 char **newArgv;
655 int newArgvIdx = 0;
656 int isVMType;
657 int jvmidx = -1;
658 char *jvmtype = getenv("JDK_ALTERNATE_VM");
659
660 argc = *pargc;
661
662 /* To make things simpler we always copy the argv array */
663 newArgv = JLI_MemAlloc((argc + 1) * sizeof(char *));
664
665 /* The program name is always present */
666 newArgv[newArgvIdx++] = (*argv)[0];
667
668 for (argi = 1; argi < argc; argi++) {
669 char *arg = (*argv)[argi];
670 isVMType = 0;
671
672 #ifdef JAVA_ARGS
673 if (arg[0] != '-') {
674 newArgv[newArgvIdx++] = arg;
675 continue;
676 }
677 #else
678 if (strcmp(arg, "-classpath") == 0 ||
679 strcmp(arg, "-cp") == 0) {
680 newArgv[newArgvIdx++] = arg;
681 argi++;
682 if (argi < argc) {
683 newArgv[newArgvIdx++] = (*argv)[argi];
684 }
685 continue;
686 }
687 if (arg[0] != '-') break;
688 #endif
689
690 /* Did the user pass an explicit VM type? */
691 i = KnownVMIndex(arg);
692 if (i >= 0) {
693 jvmtype = knownVMs[jvmidx = i].name + 1; /* skip the - */
694 isVMType = 1;
695 *pargc = *pargc - 1;
696 }
697
698 /* Did the user specify an "alternate" VM? */
699 else if (strncmp(arg, "-XXaltjvm=", 10) == 0 || strncmp(arg, "-J-XXaltjvm=", 12) == 0) {
700 isVMType = 1;
701 jvmtype = arg+((arg[1]=='X')? 10 : 12);
702 jvmidx = -1;
703 }
704
705 if (!isVMType) {
706 newArgv[newArgvIdx++] = arg;
707 }
708 }
709
710 /*
711 * Finish copying the arguments if we aborted the above loop.
712 * NOTE that if we aborted via "break" then we did NOT copy the
713 * last argument above, and in addition argi will be less than
714 * argc.
715 */
716 while (argi < argc) {
717 newArgv[newArgvIdx++] = (*argv)[argi];
718 argi++;
719 }
720
721 /* argv is null-terminated */
722 newArgv[newArgvIdx] = 0;
723
724 /* Copy back argv */
725 *argv = newArgv;
726 *pargc = newArgvIdx;
727
728 /* use the default VM type if not specified (no alias processing) */
729 if (jvmtype == NULL) {
730 char* result = knownVMs[0].name+1;
731 /* Use a different VM type if we are on a server class machine? */
732 if ((knownVMs[0].flag == VM_IF_SERVER_CLASS) &&
733 (ServerClassMachine() == JNI_TRUE)) {
734 result = knownVMs[0].server_class+1;
735 }
736 if (_launcher_debug) {
737 printf("Default VM: %s\n", result);
738 }
739 return result;
740 }
741
742 /* if using an alternate VM, no alias processing */
743 if (jvmidx < 0)
744 return jvmtype;
745
746 /* Resolve aliases first */
747 {
748 int loopCount = 0;
749 while (knownVMs[jvmidx].flag == VM_ALIASED_TO) {
750 int nextIdx = KnownVMIndex(knownVMs[jvmidx].alias);
751
752 if (loopCount > knownVMsCount) {
753 if (!speculative) {
754 ReportErrorMessage("Error: Corrupt jvm.cfg file; cycle in alias list.",
755 JNI_TRUE);
756 exit(1);
757 } else {
758 return "ERROR";
759 /* break; */
760 }
761 }
762
763 if (nextIdx < 0) {
764 if (!speculative) {
765 ReportErrorMessage2("Error: Unable to resolve VM alias %s",
766 knownVMs[jvmidx].alias, JNI_TRUE);
767 exit(1);
768 } else {
769 return "ERROR";
770 }
771 }
772 jvmidx = nextIdx;
773 jvmtype = knownVMs[jvmidx].name+1;
774 loopCount++;
775 }
776 }
777
778 switch (knownVMs[jvmidx].flag) {
779 case VM_WARN:
780 if (!speculative) {
781 fprintf(stderr, "Warning: %s VM not supported; %s VM will be used\n",
782 jvmtype, knownVMs[0].name + 1);
783 }
784 /* fall through */
785 case VM_IGNORE:
786 jvmtype = knownVMs[jvmidx=0].name + 1;
787 /* fall through */
788 case VM_KNOWN:
789 break;
790 case VM_ERROR:
791 if (!speculative) {
792 ReportErrorMessage2("Error: %s VM not supported", jvmtype, JNI_TRUE);
793 exit(1);
794 } else {
795 return "ERROR";
796 }
797 }
798
799 return jvmtype;
800 }
801 #endif /* ifndef GAMMA */
802
803 # define KB (1024UL)
804 # define MB (1024UL * KB)
805 # define GB (1024UL * MB)
806
807 /* copied from HotSpot function "atomll()" */
808 static int
809 parse_stack_size(const char *s, jlong *result) {
810 jlong n = 0;
811 int args_read = sscanf(s, JLONG_FORMAT, &n);
812 if (args_read != 1) {
813 return 0;
814 }
815 while (*s != '\0' && *s >= '0' && *s <= '9') {
816 s++;
817 }
818 // 4705540: illegal if more characters are found after the first non-digit
819 if (strlen(s) > 1) {
820 return 0;
821 }
822 switch (*s) {
823 case 'T': case 't':
824 *result = n * GB * KB;
825 return 1;
826 case 'G': case 'g':
827 *result = n * GB;
828 return 1;
829 case 'M': case 'm':
830 *result = n * MB;
831 return 1;
832 case 'K': case 'k':
833 *result = n * KB;
834 return 1;
835 case '\0':
836 *result = n;
837 return 1;
838 default:
839 /* Create JVM with default stack and let VM handle malformed -Xss string*/
840 return 0;
841 }
842 }
843
844 /*
845 * Adds a new VM option with the given given name and value.
846 */
847 void
848 AddOption(char *str, void *info)
849 {
850 /*
851 * Expand options array if needed to accommodate at least one more
852 * VM option.
853 */
854 if (numOptions >= maxOptions) {
855 if (options == 0) {
856 maxOptions = 4;
857 options = JLI_MemAlloc(maxOptions * sizeof(JavaVMOption));
858 } else {
859 JavaVMOption *tmp;
860 maxOptions *= 2;
861 tmp = JLI_MemAlloc(maxOptions * sizeof(JavaVMOption));
862 memcpy(tmp, options, numOptions * sizeof(JavaVMOption));
863 JLI_MemFree(options);
864 options = tmp;
865 }
866 }
867 options[numOptions].optionString = str;
868 options[numOptions++].extraInfo = info;
869
870 if (strncmp(str, "-Xss", 4) == 0) {
871 jlong tmp;
872 if (parse_stack_size(str + 4, &tmp)) {
873 threadStackSize = tmp;
874 }
875 }
876 }
877
878 static void
879 SetClassPath(const char *s)
880 {
881 char *def;
882 s = JLI_WildcardExpandClasspath(s);
883 def = JLI_MemAlloc(strlen(s) + 40);
884 sprintf(def, "-Djava.class.path=%s", s);
885 AddOption(def, NULL);
886 }
887
888 #ifndef GAMMA
889 /*
890 * The SelectVersion() routine ensures that an appropriate version of
891 * the JRE is running. The specification for the appropriate version
892 * is obtained from either the manifest of a jar file (preferred) or
893 * from command line options.
894 * The routine also parses splash screen command line options and
895 * passes on their values in private environment variables.
896 */
897 static void
898 SelectVersion(int argc, char **argv, char **main_class)
899 {
900 char *arg;
901 char **new_argv;
902 char **new_argp;
903 char *operand;
904 char *version = NULL;
905 char *jre = NULL;
906 int jarflag = 0;
907 int headlessflag = 0;
908 int restrict_search = -1; /* -1 implies not known */
909 manifest_info info;
910 char env_entry[MAXNAMELEN + 24] = ENV_ENTRY "=";
911 char *splash_file_name = NULL;
912 char *splash_jar_name = NULL;
913 char *env_in;
914 int res;
915
916 /*
917 * If the version has already been selected, set *main_class
918 * with the value passed through the environment (if any) and
919 * simply return.
920 */
921 if ((env_in = getenv(ENV_ENTRY)) != NULL) {
922 if (*env_in != '\0')
923 *main_class = JLI_StringDup(env_in);
924 return;
925 }
926
927 /*
928 * Scan through the arguments for options relevant to multiple JRE
929 * support. For reference, the command line syntax is defined as:
930 *
931 * SYNOPSIS
932 * java [options] class [argument...]
933 *
934 * java [options] -jar file.jar [argument...]
935 *
936 * As the scan is performed, make a copy of the argument list with
937 * the version specification options (new to 1.5) removed, so that
938 * a version less than 1.5 can be exec'd.
939 *
940 * Note that due to the syntax of the native Windows interface
941 * CreateProcess(), processing similar to the following exists in
942 * the Windows platform specific routine ExecJRE (in java_md.c).
943 * Changes here should be reproduced there.
944 */
945 new_argv = JLI_MemAlloc((argc + 1) * sizeof(char*));
946 new_argv[0] = argv[0];
947 new_argp = &new_argv[1];
948 argc--;
949 argv++;
950 while ((arg = *argv) != 0 && *arg == '-') {
951 if (strncmp(arg, "-version:", 9) == 0) {
952 version = arg + 9;
953 } else if (strcmp(arg, "-jre-restrict-search") == 0) {
954 restrict_search = 1;
955 } else if (strcmp(arg, "-no-jre-restrict-search") == 0) {
956 restrict_search = 0;
957 } else {
958 if (strcmp(arg, "-jar") == 0)
959 jarflag = 1;
960 /* deal with "unfortunate" classpath syntax */
961 if ((strcmp(arg, "-classpath") == 0 || strcmp(arg, "-cp") == 0) &&
962 (argc >= 2)) {
963 *new_argp++ = arg;
964 argc--;
965 argv++;
966 arg = *argv;
967 }
968
969 /*
970 * Checking for headless toolkit option in the some way as AWT does:
971 * "true" means true and any other value means false
972 */
973 if (strcmp(arg, "-Djava.awt.headless=true") == 0) {
974 headlessflag = 1;
975 } else if (strncmp(arg, "-Djava.awt.headless=", 20) == 0) {
976 headlessflag = 0;
977 } else if (strncmp(arg, "-splash:", 8) == 0) {
978 splash_file_name = arg+8;
979 }
980 *new_argp++ = arg;
981 }
982 argc--;
983 argv++;
984 }
985 if (argc <= 0) { /* No operand? Possibly legit with -[full]version */
986 operand = NULL;
987 } else {
988 argc--;
989 *new_argp++ = operand = *argv++;
990 }
991 while (argc-- > 0) /* Copy over [argument...] */
992 *new_argp++ = *argv++;
993 *new_argp = NULL;
994
995 /*
996 * If there is a jar file, read the manifest. If the jarfile can't be
997 * read, the manifest can't be read from the jar file, or the manifest
998 * is corrupt, issue the appropriate error messages and exit.
999 *
1000 * Even if there isn't a jar file, construct a manifest_info structure
1001 * containing the command line information. It's a convenient way to carry
1002 * this data around.
1003 */
1004 if (jarflag && operand) {
1005 if ((res = JLI_ParseManifest(operand, &info)) != 0) {
1006 if (res == -1)
1007 ReportErrorMessage2("Unable to access jarfile %s",
1008 operand, JNI_TRUE);
1009 else
1010 ReportErrorMessage2("Invalid or corrupt jarfile %s",
1011 operand, JNI_TRUE);
1012 exit(1);
1013 }
1014
1015 /*
1016 * Command line splash screen option should have precedence
1017 * over the manifest, so the manifest data is used only if
1018 * splash_file_name has not been initialized above during command
1019 * line parsing
1020 */
1021 if (!headlessflag && !splash_file_name && info.splashscreen_image_file_name) {
1022 splash_file_name = info.splashscreen_image_file_name;
1023 splash_jar_name = operand;
1024 }
1025 } else {
1026 info.manifest_version = NULL;
1027 info.main_class = NULL;
1028 info.jre_version = NULL;
1029 info.jre_restrict_search = 0;
1030 }
1031
1032 /*
1033 * Passing on splash screen info in environment variables
1034 */
1035 if (splash_file_name && !headlessflag) {
1036 char* splash_file_entry = JLI_MemAlloc(strlen(SPLASH_FILE_ENV_ENTRY "=")+strlen(splash_file_name)+1);
1037 strcpy(splash_file_entry, SPLASH_FILE_ENV_ENTRY "=");
1038 strcat(splash_file_entry, splash_file_name);
1039 putenv(splash_file_entry);
1040 }
1041 if (splash_jar_name && !headlessflag) {
1042 char* splash_jar_entry = JLI_MemAlloc(strlen(SPLASH_JAR_ENV_ENTRY "=")+strlen(splash_jar_name)+1);
1043 strcpy(splash_jar_entry, SPLASH_JAR_ENV_ENTRY "=");
1044 strcat(splash_jar_entry, splash_jar_name);
1045 putenv(splash_jar_entry);
1046 }
1047
1048 /*
1049 * The JRE-Version and JRE-Restrict-Search values (if any) from the
1050 * manifest are overwritten by any specified on the command line.
1051 */
1052 if (version != NULL)
1053 info.jre_version = version;
1054 if (restrict_search != -1)
1055 info.jre_restrict_search = restrict_search;
1056
1057 /*
1058 * "Valid" returns (other than unrecoverable errors) follow. Set
1059 * main_class as a side-effect of this routine.
1060 */
1061 if (info.main_class != NULL)
1062 *main_class = JLI_StringDup(info.main_class);
1063
1064 /*
1065 * If no version selection information is found either on the command
1066 * line or in the manifest, simply return.
1067 */
1068 if (info.jre_version == NULL) {
1069 JLI_FreeManifest();
1070 JLI_MemFree(new_argv);
1071 return;
1072 }
1073
1074 /*
1075 * Check for correct syntax of the version specification (JSR 56).
1076 */
1077 if (!JLI_ValidVersionString(info.jre_version)) {
1078 ReportErrorMessage2("Syntax error in version specification \"%s\"",
1079 info.jre_version, JNI_TRUE);
1080 exit(1);
1081 }
1082
1083 /*
1084 * Find the appropriate JVM on the system. Just to be as forgiving as
1085 * possible, if the standard algorithms don't locate an appropriate
1086 * jre, check to see if the one running will satisfy the requirements.
1087 * This can happen on systems which haven't been set-up for multiple
1088 * JRE support.
1089 */
1090 jre = LocateJRE(&info);
1091 if (_launcher_debug)
1092 printf("JRE-Version = %s, JRE-Restrict-Search = %s Selected = %s\n",
1093 (info.jre_version?info.jre_version:"null"),
1094 (info.jre_restrict_search?"true":"false"), (jre?jre:"null"));
1095 if (jre == NULL) {
1096 if (JLI_AcceptableRelease(FULL_VERSION, info.jre_version)) {
1097 JLI_FreeManifest();
1098 JLI_MemFree(new_argv);
1099 return;
1100 } else {
1101 ReportErrorMessage2(
1102 "Unable to locate JRE meeting specification \"%s\"",
1103 info.jre_version, JNI_TRUE);
1104 exit(1);
1105 }
1106 }
1107
1108 /*
1109 * If I'm not the chosen one, exec the chosen one. Returning from
1110 * ExecJRE indicates that I am indeed the chosen one.
1111 *
1112 * The private environment variable _JAVA_VERSION_SET is used to
1113 * prevent the chosen one from re-reading the manifest file and
1114 * using the values found within to override the (potential) command
1115 * line flags stripped from argv (because the target may not
1116 * understand them). Passing the MainClass value is an optimization
1117 * to avoid locating, expanding and parsing the manifest extra
1118 * times.
1119 */
1120 if (info.main_class != NULL) {
1121 if (strlen(info.main_class) <= MAXNAMELEN) {
1122 (void)strcat(env_entry, info.main_class);
1123 } else {
1124 ReportErrorMessage("Error: main-class: attribute exceeds system limits\n", JNI_TRUE);
1125 exit(1);
1126 }
1127 }
1128 (void)putenv(env_entry);
1129 ExecJRE(jre, new_argv);
1130 JLI_FreeManifest();
1131 JLI_MemFree(new_argv);
1132 return;
1133 }
1134 #endif /* ifndef GAMMA */
1135
1136 /*
1137 * Parses command line arguments. Returns JNI_FALSE if launcher
1138 * should exit without starting vm (e.g. certain version and usage
1139 * options); returns JNI_TRUE if vm needs to be started to process
1140 * given options. *pret (the launcher process return value) is set to
1141 * 0 for a normal exit.
1142 */
1143 static jboolean
1144 ParseArguments(int *pargc, char ***pargv, char **pjarfile,
1145 char **pclassname, int *pret, const char *jvmpath)
1146 {
1147 int argc = *pargc;
1148 char **argv = *pargv;
1149 jboolean jarflag = JNI_FALSE;
1150 char *arg;
1151
1152 *pret = 1;
1153 while ((arg = *argv) != 0 && *arg == '-') {
1154 argv++; --argc;
1155 if (strcmp(arg, "-classpath") == 0 || strcmp(arg, "-cp") == 0) {
1156 if (argc < 1) {
1157 ReportErrorMessage2("%s requires class path specification",
1158 arg, JNI_TRUE);
1159 PrintUsage();
1160 return JNI_FALSE;
1161 }
1162 SetClassPath(*argv);
1163 argv++; --argc;
1164 } else if (strcmp(arg, "-jar") == 0) {
1165 jarflag = JNI_TRUE;
1166 } else if (strcmp(arg, "-help") == 0 ||
1167 strcmp(arg, "-h") == 0 ||
1168 strcmp(arg, "-?") == 0) {
1169 PrintUsage();
1170 *pret = 0;
1171 return JNI_FALSE;
1172 } else if (strcmp(arg, "-version") == 0) {
1173 printVersion = JNI_TRUE;
1174 return JNI_TRUE;
1175 } else if (strcmp(arg, "-showversion") == 0) {
1176 showVersion = JNI_TRUE;
1177 } else if (strcmp(arg, "-X") == 0) {
1178 *pret = PrintXUsage(jvmpath);
1179 return JNI_FALSE;
1180 /*
1181 * The following case provide backward compatibility with old-style
1182 * command line options.
1183 */
1184 } else if (strcmp(arg, "-fullversion") == 0) {
1185 fprintf(stderr, "%s full version \"%s\"\n", progname,
1186 FULL_VERSION);
1187 *pret = 0;
1188 return JNI_FALSE;
1189 } else if (strcmp(arg, "-verbosegc") == 0) {
1190 AddOption("-verbose:gc", NULL);
1191 } else if (strcmp(arg, "-t") == 0) {
1192 AddOption("-Xt", NULL);
1193 } else if (strcmp(arg, "-tm") == 0) {
1194 AddOption("-Xtm", NULL);
1195 } else if (strcmp(arg, "-debug") == 0) {
1196 AddOption("-Xdebug", NULL);
1197 } else if (strcmp(arg, "-noclassgc") == 0) {
1198 AddOption("-Xnoclassgc", NULL);
1199 } else if (strcmp(arg, "-Xfuture") == 0) {
1200 AddOption("-Xverify:all", NULL);
1201 } else if (strcmp(arg, "-verify") == 0) {
1202 AddOption("-Xverify:all", NULL);
1203 } else if (strcmp(arg, "-verifyremote") == 0) {
1204 AddOption("-Xverify:remote", NULL);
1205 } else if (strcmp(arg, "-noverify") == 0) {
1206 AddOption("-Xverify:none", NULL);
1207 } else if (strcmp(arg, "-XXsuppressExitMessage") == 0) {
1208 noExitErrorMessage = 1;
1209 } else if (strncmp(arg, "-prof", 5) == 0) {
1210 char *p = arg + 5;
1211 char *tmp = JLI_MemAlloc(strlen(arg) + 50);
1212 if (*p) {
1213 sprintf(tmp, "-Xrunhprof:cpu=old,file=%s", p + 1);
1214 } else {
1215 sprintf(tmp, "-Xrunhprof:cpu=old,file=java.prof");
1216 }
1217 AddOption(tmp, NULL);
1218 } else if (strncmp(arg, "-ss", 3) == 0 ||
1219 strncmp(arg, "-oss", 4) == 0 ||
1220 strncmp(arg, "-ms", 3) == 0 ||
1221 strncmp(arg, "-mx", 3) == 0) {
1222 char *tmp = JLI_MemAlloc(strlen(arg) + 6);
1223 sprintf(tmp, "-X%s", arg + 1); /* skip '-' */
1224 AddOption(tmp, NULL);
1225 } else if (strcmp(arg, "-checksource") == 0 ||
1226 strcmp(arg, "-cs") == 0 ||
1227 strcmp(arg, "-noasyncgc") == 0) {
1228 /* No longer supported */
1229 fprintf(stderr,
1230 "Warning: %s option is no longer supported.\n",
1231 arg);
1232 } else if (strncmp(arg, "-version:", 9) == 0 ||
1233 strcmp(arg, "-no-jre-restrict-search") == 0 ||
1234 strcmp(arg, "-jre-restrict-search") == 0 ||
1235 strncmp(arg, "-splash:", 8) == 0) {
1236 ; /* Ignore machine independent options already handled */
1237 } else if (RemovableMachineDependentOption(arg) ) {
1238 ; /* Do not pass option to vm. */
1239 }
1240 else {
1241 AddOption(arg, NULL);
1242 }
1243 }
1244
1245 if (--argc >= 0) {
1246 if (jarflag) {
1247 *pjarfile = *argv++;
1248 *pclassname = 0;
1249 } else {
1250 *pjarfile = 0;
1251 *pclassname = *argv++;
1252 }
1253 *pargc = argc;
1254 *pargv = argv;
1255 }
1256
1257 return JNI_TRUE;
1258 }
1259
1260 /*
1261 * Initializes the Java Virtual Machine. Also frees options array when
1262 * finished.
1263 */
1264 static jboolean
1265 InitializeJVM(JavaVM **pvm, JNIEnv **penv, InvocationFunctions *ifn)
1266 {
1267 JavaVMInitArgs args;
1268 jint r;
1269
1270 memset(&args, 0, sizeof(args));
1271 args.version = JNI_VERSION_1_2;
1272 args.nOptions = numOptions;
1273 args.options = options;
1274 args.ignoreUnrecognized = JNI_FALSE;
1275
1276 if (_launcher_debug) {
1277 int i = 0;
1278 printf("JavaVM args:\n ");
1279 printf("version 0x%08lx, ", (long)args.version);
1280 printf("ignoreUnrecognized is %s, ",
1281 args.ignoreUnrecognized ? "JNI_TRUE" : "JNI_FALSE");
1282 printf("nOptions is %ld\n", (long)args.nOptions);
1283 for (i = 0; i < numOptions; i++)
1284 printf(" option[%2d] = '%s'\n",
1285 i, args.options[i].optionString);
1286 }
1287
1288 r = ifn->CreateJavaVM(pvm, (void **)penv, &args);
1289 JLI_MemFree(options);
1290 return r == JNI_OK;
1291 }
1292
1293
1294 #define NULL_CHECK0(e) if ((e) == 0) return 0
1295 #define NULL_CHECK(e) if ((e) == 0) return
1296
1297 static jstring platformEncoding = NULL;
1298 static jstring getPlatformEncoding(JNIEnv *env) {
1299 if (platformEncoding == NULL) {
1300 jstring propname = (*env)->NewStringUTF(env, "sun.jnu.encoding");
1301 if (propname) {
1302 jclass cls;
1303 jmethodID mid;
1304 NULL_CHECK0 (cls = (*env)->FindClass(env, "java/lang/System"));
1305 NULL_CHECK0 (mid = (*env)->GetStaticMethodID(
1306 env, cls,
1307 "getProperty",
1308 "(Ljava/lang/String;)Ljava/lang/String;"));
1309 platformEncoding = (*env)->CallStaticObjectMethod (
1310 env, cls, mid, propname);
1311 }
1312 }
1313 return platformEncoding;
1314 }
1315
1316 static jboolean isEncodingSupported(JNIEnv *env, jstring enc) {
1317 jclass cls;
1318 jmethodID mid;
1319 NULL_CHECK0 (cls = (*env)->FindClass(env, "java/nio/charset/Charset"));
1320 NULL_CHECK0 (mid = (*env)->GetStaticMethodID(
1321 env, cls,
1322 "isSupported",
1323 "(Ljava/lang/String;)Z"));
1324 return (*env)->CallStaticBooleanMethod(env, cls, mid, enc);
1325 }
1326
1327 /*
1328 * Returns a new Java string object for the specified platform string.
1329 */
1330 static jstring
1331 NewPlatformString(JNIEnv *env, char *s)
1332 {
1333 int len = (int)strlen(s);
1334 jclass cls;
1335 jmethodID mid;
1336 jbyteArray ary;
1337 jstring enc;
1338
1339 if (s == NULL)
1340 return 0;
1341 enc = getPlatformEncoding(env);
1342
1343 ary = (*env)->NewByteArray(env, len);
1344 if (ary != 0) {
1345 jstring str = 0;
1346 (*env)->SetByteArrayRegion(env, ary, 0, len, (jbyte *)s);
1347 if (!(*env)->ExceptionOccurred(env)) {
1348 if (isEncodingSupported(env, enc) == JNI_TRUE) {
1349 NULL_CHECK0(cls = (*env)->FindClass(env, "java/lang/String"));
1350 NULL_CHECK0(mid = (*env)->GetMethodID(env, cls, "<init>",
1351 "([BLjava/lang/String;)V"));
1352 str = (*env)->NewObject(env, cls, mid, ary, enc);
1353 } else {
1354 /*If the encoding specified in sun.jnu.encoding is not
1355 endorsed by "Charset.isSupported" we have to fall back
1356 to use String(byte[]) explicitly here without specifying
1357 the encoding name, in which the StringCoding class will
1358 pickup the iso-8859-1 as the fallback converter for us.
1359 */
1360 NULL_CHECK0(cls = (*env)->FindClass(env, "java/lang/String"));
1361 NULL_CHECK0(mid = (*env)->GetMethodID(env, cls, "<init>",
1362 "([B)V"));
1363 str = (*env)->NewObject(env, cls, mid, ary);
1364 }
1365 (*env)->DeleteLocalRef(env, ary);
1366 return str;
1367 }
1368 }
1369 return 0;
1370 }
1371
1372 /*
1373 * Returns a new array of Java string objects for the specified
1374 * array of platform strings.
1375 */
1376 static jobjectArray
1377 NewPlatformStringArray(JNIEnv *env, char **strv, int strc)
1378 {
1379 jarray cls;
1380 jarray ary;
1381 int i;
1382
1383 NULL_CHECK0(cls = (*env)->FindClass(env, "java/lang/String"));
1384 NULL_CHECK0(ary = (*env)->NewObjectArray(env, strc, cls, 0));
1385 for (i = 0; i < strc; i++) {
1386 jstring str = NewPlatformString(env, *strv++);
1387 NULL_CHECK0(str);
1388 (*env)->SetObjectArrayElement(env, ary, i, str);
1389 (*env)->DeleteLocalRef(env, str);
1390 }
1391 return ary;
1392 }
1393
1394 /*
1395 * Loads a class, convert the '.' to '/'.
1396 */
1397 static jclass
1398 LoadClass(JNIEnv *env, char *name)
1399 {
1400 char *buf = JLI_MemAlloc(strlen(name) + 1);
1401 char *s = buf, *t = name, c;
1402 jclass cls;
1403 jlong start, end;
1404
1405 if (_launcher_debug)
1406 start = CounterGet();
1407
1408 do {
1409 c = *t++;
1410 *s++ = (c == '.') ? '/' : c;
1411 } while (c != '\0');
1412 cls = (*env)->FindClass(env, buf);
1413 JLI_MemFree(buf);
1414
1415 if (_launcher_debug) {
1416 end = CounterGet();
1417 printf("%ld micro seconds to load main class\n",
1418 (long)(jint)Counter2Micros(end-start));
1419 printf("----_JAVA_LAUNCHER_DEBUG----\n");
1420 }
1421
1422 return cls;
1423 }
1424
1425
1426 /*
1427 * Returns the main class name for the specified jar file.
1428 */
1429 static jstring
1430 GetMainClassName(JNIEnv *env, char *jarname)
1431 {
1432 #define MAIN_CLASS "Main-Class"
1433 jclass cls;
1434 jmethodID mid;
1435 jobject jar, man, attr;
1436 jstring str, result = 0;
1437
1438 NULL_CHECK0(cls = (*env)->FindClass(env, "java/util/jar/JarFile"));
1439 NULL_CHECK0(mid = (*env)->GetMethodID(env, cls, "<init>",
1440 "(Ljava/lang/String;)V"));
1441 NULL_CHECK0(str = NewPlatformString(env, jarname));
1442 NULL_CHECK0(jar = (*env)->NewObject(env, cls, mid, str));
1443 NULL_CHECK0(mid = (*env)->GetMethodID(env, cls, "getManifest",
1444 "()Ljava/util/jar/Manifest;"));
1445 man = (*env)->CallObjectMethod(env, jar, mid);
1446 if (man != 0) {
1447 NULL_CHECK0(mid = (*env)->GetMethodID(env,
1448 (*env)->GetObjectClass(env, man),
1449 "getMainAttributes",
1450 "()Ljava/util/jar/Attributes;"));
1451 attr = (*env)->CallObjectMethod(env, man, mid);
1452 if (attr != 0) {
1453 NULL_CHECK0(mid = (*env)->GetMethodID(env,
1454 (*env)->GetObjectClass(env, attr),
1455 "getValue",
1456 "(Ljava/lang/String;)Ljava/lang/String;"));
1457 NULL_CHECK0(str = NewPlatformString(env, MAIN_CLASS));
1458 result = (*env)->CallObjectMethod(env, attr, mid, str);
1459 }
1460 }
1461 return result;
1462 }
1463
1464 #ifdef JAVA_ARGS
1465 static char *java_args[] = JAVA_ARGS;
1466 static char *app_classpath[] = APP_CLASSPATH;
1467
1468 /*
1469 * For tools, convert command line args thus:
1470 * javac -cp foo:foo/"*" -J-ms32m ...
1471 * java -ms32m -cp JLI_WildcardExpandClasspath(foo:foo/"*") ...
1472 */
1473 static void
1474 TranslateApplicationArgs(int *pargc, char ***pargv)
1475 {
1476 const int NUM_ARGS = (sizeof(java_args) / sizeof(char *));
1477 int argc = *pargc;
1478 char **argv = *pargv;
1479 int nargc = argc + NUM_ARGS;
1480 char **nargv = JLI_MemAlloc((nargc + 1) * sizeof(char *));
1481 int i;
1482
1483 *pargc = nargc;
1484 *pargv = nargv;
1485
1486 /* Copy the VM arguments (i.e. prefixed with -J) */
1487 for (i = 0; i < NUM_ARGS; i++) {
1488 char *arg = java_args[i];
1489 if (arg[0] == '-' && arg[1] == 'J') {
1490 *nargv++ = arg + 2;
1491 }
1492 }
1493
1494 for (i = 0; i < argc; i++) {
1495 char *arg = argv[i];
1496 if (arg[0] == '-' && arg[1] == 'J') {
1497 if (arg[2] == '\0') {
1498 ReportErrorMessage("Error: the -J option should not be "
1499 "followed by a space.", JNI_TRUE);
1500 exit(1);
1501 }
1502 *nargv++ = arg + 2;
1503 }
1504 }
1505
1506 /* Copy the rest of the arguments */
1507 for (i = 0; i < NUM_ARGS; i++) {
1508 char *arg = java_args[i];
1509 if (arg[0] != '-' || arg[1] != 'J') {
1510 *nargv++ = arg;
1511 }
1512 }
1513 for (i = 0; i < argc; i++) {
1514 char *arg = argv[i];
1515 if (arg[0] == '-') {
1516 if (arg[1] == 'J')
1517 continue;
1518 #ifdef EXPAND_CLASSPATH_WILDCARDS
1519 if (arg[1] == 'c'
1520 && (strcmp(arg, "-cp") == 0 ||
1521 strcmp(arg, "-classpath") == 0)
1522 && i < argc - 1) {
1523 *nargv++ = arg;
1524 *nargv++ = (char *) JLI_WildcardExpandClasspath(argv[i+1]);
1525 i++;
1526 continue;
1527 }
1528 #endif
1529 }
1530 *nargv++ = arg;
1531 }
1532 *nargv = 0;
1533 }
1534
1535 /*
1536 * For our tools, we try to add 3 VM options:
1537 * -Denv.class.path=<envcp>
1538 * -Dapplication.home=<apphome>
1539 * -Djava.class.path=<appcp>
1540 * <envcp> is the user's setting of CLASSPATH -- for instance the user
1541 * tells javac where to find binary classes through this environment
1542 * variable. Notice that users will be able to compile against our
1543 * tools classes (sun.tools.javac.Main) only if they explicitly add
1544 * tools.jar to CLASSPATH.
1545 * <apphome> is the directory where the application is installed.
1546 * <appcp> is the classpath to where our apps' classfiles are.
1547 */
1548 static jboolean
1549 AddApplicationOptions()
1550 {
1551 const int NUM_APP_CLASSPATH = (sizeof(app_classpath) / sizeof(char *));
1552 char *envcp, *appcp, *apphome;
1553 char home[MAXPATHLEN]; /* application home */
1554 char separator[] = { PATH_SEPARATOR, '\0' };
1555 int size, i;
1556 int strlenHome;
1557
1558 {
1559 const char *s = getenv("CLASSPATH");
1560 if (s) {
1561 s = (char *) JLI_WildcardExpandClasspath(s);
1562 /* 40 for -Denv.class.path= */
1563 envcp = (char *)JLI_MemAlloc(strlen(s) + 40);
1564 sprintf(envcp, "-Denv.class.path=%s", s);
1565 AddOption(envcp, NULL);
1566 }
1567 }
1568
1569 if (!GetApplicationHome(home, sizeof(home))) {
1570 ReportErrorMessage("Can't determine application home", JNI_TRUE);
1571 return JNI_FALSE;
1572 }
1573
1574 /* 40 for '-Dapplication.home=' */
1575 apphome = (char *)JLI_MemAlloc(strlen(home) + 40);
1576 sprintf(apphome, "-Dapplication.home=%s", home);
1577 AddOption(apphome, NULL);
1578
1579 /* How big is the application's classpath? */
1580 size = 40; /* 40: "-Djava.class.path=" */
1581 strlenHome = (int)strlen(home);
1582 for (i = 0; i < NUM_APP_CLASSPATH; i++) {
1583 size += strlenHome + (int)strlen(app_classpath[i]) + 1; /* 1: separator */
1584 }
1585 appcp = (char *)JLI_MemAlloc(size + 1);
1586 strcpy(appcp, "-Djava.class.path=");
1587 for (i = 0; i < NUM_APP_CLASSPATH; i++) {
1588 strcat(appcp, home); /* c:\program files\myapp */
1589 strcat(appcp, app_classpath[i]); /* \lib\myapp.jar */
1590 strcat(appcp, separator); /* ; */
1591 }
1592 appcp[strlen(appcp)-1] = '\0'; /* remove trailing path separator */
1593 AddOption(appcp, NULL);
1594 return JNI_TRUE;
1595 }
1596 #endif /* JAVA_ARGS */
1597
1598 /*
1599 * inject the -Dsun.java.command pseudo property into the args structure
1600 * this pseudo property is used in the HotSpot VM to expose the
1601 * Java class name and arguments to the main method to the VM. The
1602 * HotSpot VM uses this pseudo property to store the Java class name
1603 * (or jar file name) and the arguments to the class's main method
1604 * to the instrumentation memory region. The sun.java.command pseudo
1605 * property is not exported by HotSpot to the Java layer.
1606 */
1607 void
1608 SetJavaCommandLineProp(char *classname, char *jarfile,
1609 int argc, char **argv)
1610 {
1611
1612 int i = 0;
1613 size_t len = 0;
1614 char* javaCommand = NULL;
1615 char* dashDstr = "-Dsun.java.command=";
1616
1617 if (classname == NULL && jarfile == NULL) {
1618 /* unexpected, one of these should be set. just return without
1619 * setting the property
1620 */
1621 return;
1622 }
1623
1624 /* if the class name is not set, then use the jarfile name */
1625 if (classname == NULL) {
1626 classname = jarfile;
1627 }
1628
1629 /* determine the amount of memory to allocate assuming
1630 * the individual components will be space separated
1631 */
1632 len = strlen(classname);
1633 for (i = 0; i < argc; i++) {
1634 len += strlen(argv[i]) + 1;
1635 }
1636
1637 /* allocate the memory */
1638 javaCommand = (char*) JLI_MemAlloc(len + strlen(dashDstr) + 1);
1639
1640 /* build the -D string */
1641 *javaCommand = '\0';
1642 strcat(javaCommand, dashDstr);
1643 strcat(javaCommand, classname);
1644
1645 for (i = 0; i < argc; i++) {
1646 /* the components of the string are space separated. In
1647 * the case of embedded white space, the relationship of
1648 * the white space separated components to their true
1649 * positional arguments will be ambiguous. This issue may
1650 * be addressed in a future release.
1651 */
1652 strcat(javaCommand, " ");
1653 strcat(javaCommand, argv[i]);
1654 }
1655
1656 AddOption(javaCommand, NULL);
1657 }
1658
1659 /*
1660 * JVM would like to know if it's created by a standard Sun launcher, or by
1661 * user native application, the following property indicates the former.
1662 */
1663 void SetJavaLauncherProp() {
1664 AddOption("-Dsun.java.launcher=" LAUNCHER_TYPE, NULL);
1665 }
1666
1667 /*
1668 * Prints the version information from the java.version and other properties.
1669 */
1670 static void
1671 PrintJavaVersion(JNIEnv *env)
1672 {
1673 jclass ver;
1674 jmethodID print;
1675
1676 NULL_CHECK(ver = (*env)->FindClass(env, "sun/misc/Version"));
1677 NULL_CHECK(print = (*env)->GetStaticMethodID(env, ver, "print", "()V"));
1678
1679 (*env)->CallStaticVoidMethod(env, ver, print);
1680 }
1681
1682 /*
1683 * Prints default usage message.
1684 */
1685 static void
1686 PrintUsage(void)
1687 {
1688 #ifndef GAMMA
1689 int i;
1690 #endif
1691
1692 fprintf(stdout,
1693 "Usage: %s [-options] class [args...]\n"
1694 " (to execute a class)\n"
1695 " or %s [-options] -jar jarfile [args...]\n"
1696 " (to execute a jar file)\n"
1697 "\n"
1698 "where options include:\n",
1699 progname,
1700 progname);
1701
1702 #ifndef GAMMA
1703 PrintMachineDependentOptions();
1704
1705 if ((knownVMs[0].flag == VM_KNOWN) ||
1706 (knownVMs[0].flag == VM_IF_SERVER_CLASS)) {
1707 fprintf(stdout, " %s\t to select the \"%s\" VM\n",
1708 knownVMs[0].name, knownVMs[0].name+1);
1709 }
1710 for (i=1; i<knownVMsCount; i++) {
1711 if (knownVMs[i].flag == VM_KNOWN)
1712 fprintf(stdout, " %s\t to select the \"%s\" VM\n",
1713 knownVMs[i].name, knownVMs[i].name+1);
1714 }
1715 for (i=1; i<knownVMsCount; i++) {
1716 if (knownVMs[i].flag == VM_ALIASED_TO)
1717 fprintf(stdout, " %s\t is a synonym for "
1718 "the \"%s\" VM [deprecated]\n",
1719 knownVMs[i].name, knownVMs[i].alias+1);
1720 }
1721 /* The first known VM is the default */
1722 {
1723 const char* defaultVM = knownVMs[0].name+1;
1724 const char* punctuation = ".";
1725 const char* reason = "";
1726 if ((knownVMs[0].flag == VM_IF_SERVER_CLASS) &&
1727 (ServerClassMachine() == JNI_TRUE)) {
1728 defaultVM = knownVMs[0].server_class+1;
1729 punctuation = ", ";
1730 reason = "because you are running on a server-class machine.\n";
1731 }
1732 fprintf(stdout, " The default VM is %s%s\n",
1733 defaultVM, punctuation);
1734 fprintf(stdout, " %s\n",
1735 reason);
1736 }
1737 #endif /* ifndef GAMMA */
1738
1739 fprintf(stdout,
1740 " -cp <class search path of directories and zip/jar files>\n"
1741 " -classpath <class search path of directories and zip/jar files>\n"
1742 " A %c separated list of directories, JAR archives,\n"
1743 " and ZIP archives to search for class files.\n"
1744 " -D<name>=<value>\n"
1745 " set a system property\n"
1746 " -verbose[:class|gc|jni]\n"
1747 " enable verbose output\n"
1748 " -version print product version and exit\n"
1749 " -version:<value>\n"
1750 " require the specified version to run\n"
1751 " -showversion print product version and continue\n"
1752 " -jre-restrict-search | -jre-no-restrict-search\n"
1753 " include/exclude user private JREs in the version search\n"
1754 " -? -help print this help message\n"
1755 " -X print help on non-standard options\n"
1756 " -ea[:<packagename>...|:<classname>]\n"
1757 " -enableassertions[:<packagename>...|:<classname>]\n"
1758 " enable assertions\n"
1759 " -da[:<packagename>...|:<classname>]\n"
1760 " -disableassertions[:<packagename>...|:<classname>]\n"
1761 " disable assertions\n"
1762 " -esa | -enablesystemassertions\n"
1763 " enable system assertions\n"
1764 " -dsa | -disablesystemassertions\n"
1765 " disable system assertions\n"
1766 " -agentlib:<libname>[=<options>]\n"
1767 " load native agent library <libname>, e.g. -agentlib:hprof\n"
1768 " see also, -agentlib:jdwp=help and -agentlib:hprof=help\n"
1769 " -agentpath:<pathname>[=<options>]\n"
1770 " load native agent library by full pathname\n"
1771 " -javaagent:<jarpath>[=<options>]\n"
1772 " load Java programming language agent, see java.lang.instrument\n"
1773 " -splash:<imagepath>\n"
1774 " show splash screen with specified image\n"
1775
1776 ,PATH_SEPARATOR);
1777 }
1778
1779 /*
1780 * Print usage message for -X options.
1781 */
1782 static jint
1783 PrintXUsage(const char *jvmpath)
1784 {
1785 /*
1786 A 32 bit cushion to prevent buffer overrun, noting that
1787 fopen(3C) may fail if the buffer exceeds MAXPATHLEN.
1788 */
1789 char path[MAXPATHLEN+32];
1790 char buf[128];
1791 size_t n;
1792 FILE *fp;
1793 static const char Xusage_txt[] = "/Xusage.txt";
1794
1795 strcpy(path, jvmpath);
1796 /* Note the FILE_SEPARATOR is platform dependent */
1797 strcpy(strrchr(path, FILE_SEPARATOR), Xusage_txt);
1798 fp = fopen(path, "r");
1799 if (fp == 0) {
1800 fprintf(stderr, "Can't open %s\n", path);
1801 return 1;
1802 }
1803 while ((n = fread(buf, 1, sizeof(buf), fp)) != 0) {
1804 fwrite(buf, 1, n, stdout);
1805 }
1806 fclose(fp);
1807 return 0;
1808 }
1809
1810 #ifndef GAMMA
1811 /*
1812 * Read the jvm.cfg file and fill the knownJVMs[] array.
1813 *
1814 * The functionality of the jvm.cfg file is subject to change without
1815 * notice and the mechanism will be removed in the future.
1816 *
1817 * The lexical structure of the jvm.cfg file is as follows:
1818 *
1819 * jvmcfg := { vmLine }
1820 * vmLine := knownLine
1821 * | aliasLine
1822 * | warnLine
1823 * | ignoreLine
1824 * | errorLine
1825 * | predicateLine
1826 * | commentLine
1827 * knownLine := flag "KNOWN" EOL
1828 * warnLine := flag "WARN" EOL
1829 * ignoreLine := flag "IGNORE" EOL
1830 * errorLine := flag "ERROR" EOL
1831 * aliasLine := flag "ALIASED_TO" flag EOL
1832 * predicateLine := flag "IF_SERVER_CLASS" flag EOL
1833 * commentLine := "#" text EOL
1834 * flag := "-" identifier
1835 *
1836 * The semantics are that when someone specifies a flag on the command line:
1837 * - if the flag appears on a knownLine, then the identifier is used as
1838 * the name of the directory holding the JVM library (the name of the JVM).
1839 * - if the flag appears as the first flag on an aliasLine, the identifier
1840 * of the second flag is used as the name of the JVM.
1841 * - if the flag appears on a warnLine, the identifier is used as the
1842 * name of the JVM, but a warning is generated.
1843 * - if the flag appears on an ignoreLine, the identifier is recognized as the
1844 * name of a JVM, but the identifier is ignored and the default vm used
1845 * - if the flag appears on an errorLine, an error is generated.
1846 * - if the flag appears as the first flag on a predicateLine, and
1847 * the machine on which you are running passes the predicate indicated,
1848 * then the identifier of the second flag is used as the name of the JVM,
1849 * otherwise the identifier of the first flag is used as the name of the JVM.
1850 * If no flag is given on the command line, the first vmLine of the jvm.cfg
1851 * file determines the name of the JVM.
1852 * PredicateLines are only interpreted on first vmLine of a jvm.cfg file,
1853 * since they only make sense if someone hasn't specified the name of the
1854 * JVM on the command line.
1855 *
1856 * The intent of the jvm.cfg file is to allow several JVM libraries to
1857 * be installed in different subdirectories of a single JRE installation,
1858 * for space-savings and convenience in testing.
1859 * The intent is explicitly not to provide a full aliasing or predicate
1860 * mechanism.
1861 */
1862 jint
1863 ReadKnownVMs(const char *jrepath, char * arch, jboolean speculative)
1864 {
1865 FILE *jvmCfg;
1866 char jvmCfgName[MAXPATHLEN+20];
1867 char line[MAXPATHLEN+20];
1868 int cnt = 0;
1869 int lineno = 0;
1870 jlong start, end;
1871 int vmType;
1872 char *tmpPtr;
1873 char *altVMName = NULL;
1874 char *serverClassVMName = NULL;
1875 static char *whiteSpace = " \t";
1876 if (_launcher_debug) {
1877 start = CounterGet();
1878 }
1879
1880 strcpy(jvmCfgName, jrepath);
1881 strcat(jvmCfgName, FILESEP "lib" FILESEP);
1882 strcat(jvmCfgName, arch);
1883 strcat(jvmCfgName, FILESEP "jvm.cfg");
1884
1885 jvmCfg = fopen(jvmCfgName, "r");
1886 if (jvmCfg == NULL) {
1887 if (!speculative) {
1888 ReportErrorMessage2("Error: could not open `%s'", jvmCfgName,
1889 JNI_TRUE);
1890 exit(1);
1891 } else {
1892 return -1;
1893 }
1894 }
1895 while (fgets(line, sizeof(line), jvmCfg) != NULL) {
1896 vmType = VM_UNKNOWN;
1897 lineno++;
1898 if (line[0] == '#')
1899 continue;
1900 if (line[0] != '-') {
1901 fprintf(stderr, "Warning: no leading - on line %d of `%s'\n",
1902 lineno, jvmCfgName);
1903 }
1904 if (cnt >= knownVMsLimit) {
1905 GrowKnownVMs(cnt);
1906 }
1907 line[strlen(line)-1] = '\0'; /* remove trailing newline */
1908 tmpPtr = line + strcspn(line, whiteSpace);
1909 if (*tmpPtr == 0) {
1910 fprintf(stderr, "Warning: missing VM type on line %d of `%s'\n",
1911 lineno, jvmCfgName);
1912 } else {
1913 /* Null-terminate this string for JLI_StringDup below */
1914 *tmpPtr++ = 0;
1915 tmpPtr += strspn(tmpPtr, whiteSpace);
1916 if (*tmpPtr == 0) {
1917 fprintf(stderr, "Warning: missing VM type on line %d of `%s'\n",
1918 lineno, jvmCfgName);
1919 } else {
1920 if (!strncmp(tmpPtr, "KNOWN", strlen("KNOWN"))) {
1921 vmType = VM_KNOWN;
1922 } else if (!strncmp(tmpPtr, "ALIASED_TO", strlen("ALIASED_TO"))) {
1923 tmpPtr += strcspn(tmpPtr, whiteSpace);
1924 if (*tmpPtr != 0) {
1925 tmpPtr += strspn(tmpPtr, whiteSpace);
1926 }
1927 if (*tmpPtr == 0) {
1928 fprintf(stderr, "Warning: missing VM alias on line %d of `%s'\n",
1929 lineno, jvmCfgName);
1930 } else {
1931 /* Null terminate altVMName */
1932 altVMName = tmpPtr;
1933 tmpPtr += strcspn(tmpPtr, whiteSpace);
1934 *tmpPtr = 0;
1935 vmType = VM_ALIASED_TO;
1936 }
1937 } else if (!strncmp(tmpPtr, "WARN", strlen("WARN"))) {
1938 vmType = VM_WARN;
1939 } else if (!strncmp(tmpPtr, "IGNORE", strlen("IGNORE"))) {
1940 vmType = VM_IGNORE;
1941 } else if (!strncmp(tmpPtr, "ERROR", strlen("ERROR"))) {
1942 vmType = VM_ERROR;
1943 } else if (!strncmp(tmpPtr,
1944 "IF_SERVER_CLASS",
1945 strlen("IF_SERVER_CLASS"))) {
1946 tmpPtr += strcspn(tmpPtr, whiteSpace);
1947 if (*tmpPtr != 0) {
1948 tmpPtr += strspn(tmpPtr, whiteSpace);
1949 }
1950 if (*tmpPtr == 0) {
1951 fprintf(stderr, "Warning: missing server class VM on line %d of `%s'\n",
1952 lineno, jvmCfgName);
1953 } else {
1954 /* Null terminate server class VM name */
1955 serverClassVMName = tmpPtr;
1956 tmpPtr += strcspn(tmpPtr, whiteSpace);
1957 *tmpPtr = 0;
1958 vmType = VM_IF_SERVER_CLASS;
1959 }
1960 } else {
1961 fprintf(stderr, "Warning: unknown VM type on line %d of `%s'\n",
1962 lineno, &jvmCfgName[0]);
1963 vmType = VM_KNOWN;
1964 }
1965 }
1966 }
1967
1968 if (_launcher_debug)
1969 printf("jvm.cfg[%d] = ->%s<-\n", cnt, line);
1970 if (vmType != VM_UNKNOWN) {
1971 knownVMs[cnt].name = JLI_StringDup(line);
1972 knownVMs[cnt].flag = vmType;
1973 switch (vmType) {
1974 default:
1975 break;
1976 case VM_ALIASED_TO:
1977 knownVMs[cnt].alias = JLI_StringDup(altVMName);
1978 if (_launcher_debug) {
1979 printf(" name: %s vmType: %s alias: %s\n",
1980 knownVMs[cnt].name, "VM_ALIASED_TO", knownVMs[cnt].alias);
1981 }
1982 break;
1983 case VM_IF_SERVER_CLASS:
1984 knownVMs[cnt].server_class = JLI_StringDup(serverClassVMName);
1985 if (_launcher_debug) {
1986 printf(" name: %s vmType: %s server_class: %s\n",
1987 knownVMs[cnt].name, "VM_IF_SERVER_CLASS", knownVMs[cnt].server_class);
1988 }
1989 break;
1990 }
1991 cnt++;
1992 }
1993 }
1994 fclose(jvmCfg);
1995 knownVMsCount = cnt;
1996
1997 if (_launcher_debug) {
1998 end = CounterGet();
1999 printf("%ld micro seconds to parse jvm.cfg\n",
2000 (long)(jint)Counter2Micros(end-start));
2001 }
2002
2003 return cnt;
2004 }
2005
2006
2007 static void
2008 GrowKnownVMs(int minimum)
2009 {
2010 struct vmdesc* newKnownVMs;
2011 int newMax;
2012
2013 newMax = (knownVMsLimit == 0 ? INIT_MAX_KNOWN_VMS : (2 * knownVMsLimit));
2014 if (newMax <= minimum) {
2015 newMax = minimum;
2016 }
2017 newKnownVMs = (struct vmdesc*) JLI_MemAlloc(newMax * sizeof(struct vmdesc));
2018 if (knownVMs != NULL) {
2019 memcpy(newKnownVMs, knownVMs, knownVMsLimit * sizeof(struct vmdesc));
2020 }
2021 JLI_MemFree(knownVMs);
2022 knownVMs = newKnownVMs;
2023 knownVMsLimit = newMax;
2024 }
2025
2026
2027 /* Returns index of VM or -1 if not found */
2028 static int
2029 KnownVMIndex(const char* name)
2030 {
2031 int i;
2032 if (strncmp(name, "-J", 2) == 0) name += 2;
2033 for (i = 0; i < knownVMsCount; i++) {
2034 if (!strcmp(name, knownVMs[i].name)) {
2035 return i;
2036 }
2037 }
2038 return -1;
2039 }
2040
2041 static void
2042 FreeKnownVMs()
2043 {
2044 int i;
2045 for (i = 0; i < knownVMsCount; i++) {
2046 JLI_MemFree(knownVMs[i].name);
2047 knownVMs[i].name = NULL;
2048 }
2049 JLI_MemFree(knownVMs);
2050 }
2051
2052
2053 /*
2054 * Displays the splash screen according to the jar file name
2055 * and image file names stored in environment variables
2056 */
2057 static void
2058 ShowSplashScreen()
2059 {
2060 const char *jar_name = getenv(SPLASH_JAR_ENV_ENTRY);
2061 const char *file_name = getenv(SPLASH_FILE_ENV_ENTRY);
2062 int data_size;
2063 void *image_data;
2064 if (jar_name) {
2065 image_data = JLI_JarUnpackFile(jar_name, file_name, &data_size);
2066 if (image_data) {
2067 DoSplashInit();
2068 DoSplashLoadMemory(image_data, data_size);
2069 JLI_MemFree(image_data);
2070 }
2071 } else if (file_name) {
2072 DoSplashInit();
2073 DoSplashLoadFile(file_name);
2074 } else {
2075 return;
2076 }
2077 DoSplashSetFileJarName(file_name, jar_name);
2078 }
2079
2080 #endif /* ifndef GAMMA */

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