1 /*
2 * Copyright (c) 1995, 2015, 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. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26 /*
27 * Shared source for 'java' command line tool.
28 *
29 * If JAVA_ARGS is defined, then acts as a launcher for applications. For
30 * instance, the JDK command line tools such as javac and javadoc (see
31 * makefiles for more details) are built with this program. Any arguments
32 * prefixed with '-J' will be passed directly to the 'java' command.
33 */
34
35 /*
36 * One job of the launcher is to remove command line options which the
37 * vm does not understand and will not process. These options include
38 * options which select which style of vm is run (e.g. -client and
39 * -server) as well as options which select the data model to use.
40 * Additionally, for tools which invoke an underlying vm "-J-foo"
41 * options are turned into "-foo" options to the vm. This option
42 * filtering is handled in a number of places in the launcher, some of
43 * it in machine-dependent code. In this file, the function
44 * CheckJvmType removes vm style options and TranslateApplicationArgs
45 * removes "-J" prefixes. The CreateExecutionEnvironment function processes
46 * and removes -d<n> options. On unix, there is a possibility that the running
47 * data model may not match to the desired data model, in this case an exec is
48 * required to start the desired model. If the data models match, then
49 * ParseArguments will remove the -d<n> flags. If the data models do not match
50 * the CreateExecutionEnviroment will remove the -d<n> flags.
51 */
52
53
54 #include "java.h"
55
56 /*
57 * A NOTE TO DEVELOPERS: For performance reasons it is important that
58 * the program image remain relatively small until after SelectVersion
59 * CreateExecutionEnvironment have finished their possibly recursive
60 * processing. Watch everything, but resist all temptations to use Java
61 * interfaces.
62 */
63
64 /* we always print to stderr */
65 #define USE_STDERR JNI_TRUE
66
67 static jboolean printVersion = JNI_FALSE; /* print and exit */
68 static jboolean showVersion = JNI_FALSE; /* print but continue */
69 static jboolean printUsage = JNI_FALSE; /* print and exit*/
70 static jboolean printXUsage = JNI_FALSE; /* print and exit*/
71 static char *showSettings = NULL; /* print but continue */
72 static char *listModules = NULL;
73
74 static const char *_program_name;
75 static const char *_launcher_name;
76 static jboolean _is_java_args = JNI_FALSE;
77 static jboolean _have_classpath = JNI_FALSE;
78 static const char *_fVersion;
79 static jboolean _wc_enabled = JNI_FALSE;
80 static jint _ergo_policy = DEFAULT_POLICY;
81
82 /*
83 * Entries for splash screen environment variables.
84 * putenv is performed in SelectVersion. We need
85 * them in memory until UnsetEnv, so they are made static
86 * global instead of auto local.
87 */
88 static char* splash_file_entry = NULL;
89 static char* splash_jar_entry = NULL;
90
91 /*
92 * List of VM options to be specified when the VM is created.
93 */
94 static JavaVMOption *options;
95 static int numOptions, maxOptions;
96
97 /*
98 * Prototypes for functions internal to launcher.
99 */
100 static void SetClassPath(const char *s);
101 static void SetModulePath(const char *s);
102 static void SetUpgradeModulePath(const char *s);
103 static void SetMainModule(const char *s);
104 static void SetAddModulesProp(const char *mods);
105 static void SetLimitModulesProp(const char *mods);
106 static void SetAddReadsProp(const jint n, const char *s);
107 static void SetAddExportsProp(const jint n, const char *s);
108 static void SetPatchProp(const jint n, const char *s);
109 static void SelectVersion(int argc, char **argv, char **main_class);
110 static void SetJvmEnvironment(int argc, char **argv);
111 static jboolean ParseArguments(int *pargc, char ***pargv,
112 int *pmode, char **pwhat,
113 int *pret, const char *jrepath);
114 static jboolean InitializeJVM(JavaVM **pvm, JNIEnv **penv,
115 InvocationFunctions *ifn);
116 static jstring NewPlatformString(JNIEnv *env, char *s);
117 static jclass LoadMainClass(JNIEnv *env, int mode, char *name);
118 static jclass GetApplicationClass(JNIEnv *env);
119
120 static void TranslateApplicationArgs(int jargc, const char **jargv, int *pargc, char ***pargv);
121 static jboolean AddApplicationOptions(int cpathc, const char **cpathv);
122 static void SetApplicationClassPath(const char**);
123
124 static void PrintJavaVersion(JNIEnv *env, jboolean extraLF);
125 static void PrintUsage(JNIEnv* env, jboolean doXUsage);
126 static void ShowSettings(JNIEnv* env, char *optString);
127 static void ListModules(JNIEnv* env, char *optString);
128 static void SetNativeThreadName(JNIEnv* env, char *name);
129
130 static void SetPaths(int argc, char **argv);
131
132 static void DumpState();
133 static jboolean RemovableOption(char *option);
134
135 /* Maximum supported entries from jvm.cfg. */
136 #define INIT_MAX_KNOWN_VMS 10
137
138 /* Values for vmdesc.flag */
139 enum vmdesc_flag {
140 VM_UNKNOWN = -1,
141 VM_KNOWN,
142 VM_ALIASED_TO,
143 VM_WARN,
144 VM_ERROR,
145 VM_IF_SERVER_CLASS,
146 VM_IGNORE
147 };
148
149 struct vmdesc {
150 char *name;
151 int flag;
152 char *alias;
153 char *server_class;
154 };
155 static struct vmdesc *knownVMs = NULL;
156 static int knownVMsCount = 0;
157 static int knownVMsLimit = 0;
158
159 static void GrowKnownVMs(int minimum);
160 static int KnownVMIndex(const char* name);
161 static void FreeKnownVMs();
162 static jboolean IsWildCardEnabled();
163
164 #define ARG_CHECK(AC_arg_count, AC_failure_message, AC_questionable_arg) \
165 do { \
166 if (AC_arg_count < 1) { \
167 JLI_ReportErrorMessage(AC_failure_message, AC_questionable_arg); \
168 printUsage = JNI_TRUE; \
169 *pret = 1; \
170 return JNI_TRUE; \
171 } \
172 } while (JNI_FALSE)
173
174 /*
175 * Running Java code in primordial thread caused many problems. We will
176 * create a new thread to invoke JVM. See 6316197 for more information.
177 */
178 static jlong threadStackSize = 0; /* stack size of the new thread */
179 static jlong maxHeapSize = 0; /* max heap size */
180 static jlong initialHeapSize = 0; /* inital heap size */
181
182 /*
183 * A minimum -Xss stack size suitable for all platforms.
184 */
185 #ifndef STACK_SIZE_MINIMUM
186 #define STACK_SIZE_MINIMUM (32 * KB)
187 #endif
188
189 /*
190 * Entry point.
191 */
192 int
193 JLI_Launch(int argc, char ** argv, /* main argc, argc */
194 int jargc, const char** jargv, /* java args */
195 int appclassc, const char** appclassv, /* app classpath */
196 const char* fullversion, /* full version defined */
197 const char* dotversion, /* UNUSED dot version defined */
198 const char* pname, /* program name */
199 const char* lname, /* launcher name */
200 jboolean javaargs, /* JAVA_ARGS */
201 jboolean cpwildcard, /* classpath wildcard*/
202 jboolean javaw, /* windows-only javaw */
203 jint ergo /* ergonomics class policy */
204 )
205 {
206 int mode = LM_UNKNOWN;
207 char *what = NULL;
208 char *main_class = NULL;
209 int ret;
210 InvocationFunctions ifn;
211 jlong start, end;
212 char jvmpath[MAXPATHLEN];
213 char jrepath[MAXPATHLEN];
214 char jvmcfg[MAXPATHLEN];
215
216 _fVersion = fullversion;
217 _launcher_name = lname;
218 _program_name = pname;
219 _is_java_args = javaargs;
220 _wc_enabled = cpwildcard;
221 _ergo_policy = ergo;
222
223 InitLauncher(javaw);
224 DumpState();
225 if (JLI_IsTraceLauncher()) {
226 int i;
227 printf("Command line args:\n");
228 for (i = 0; i < argc ; i++) {
229 printf("argv[%d] = %s\n", i, argv[i]);
230 }
231 AddOption("-Dsun.java.launcher.diag=true", NULL);
232 }
233
234 /*
235 * SelectVersion() has several responsibilities:
236 *
237 * 1) Disallow specification of another JRE. With 1.9, another
238 * version of the JRE cannot be invoked.
239 * 2) Allow for a JRE version to invoke JDK 1.9 or later. Since
240 * all mJRE directives have been stripped from the request but
241 * the pre 1.9 JRE [ 1.6 thru 1.8 ], it is as if 1.9+ has been
242 * invoked from the command line.
243 */
244 SelectVersion(argc, argv, &main_class);
245
246 CreateExecutionEnvironment(&argc, &argv,
247 jrepath, sizeof(jrepath),
248 jvmpath, sizeof(jvmpath),
249 jvmcfg, sizeof(jvmcfg));
250
251 if (!IsJavaArgs()) {
252 SetJvmEnvironment(argc,argv);
253 }
254
255 ifn.CreateJavaVM = 0;
256 ifn.GetDefaultJavaVMInitArgs = 0;
257
258 if (JLI_IsTraceLauncher()) {
259 start = CounterGet();
260 }
261
262 if (!LoadJavaVM(jvmpath, &ifn)) {
263 return(6);
264 }
265
266 if (JLI_IsTraceLauncher()) {
267 end = CounterGet();
268 }
269
270 JLI_TraceLauncher("%ld micro seconds to LoadJavaVM\n",
271 (long)(jint)Counter2Micros(end-start));
272
273 ++argv;
274 --argc;
275
276 if (IsJavaArgs()) {
277 /* Preprocess wrapper arguments */
278 TranslateApplicationArgs(jargc, jargv, &argc, &argv);
279 if (!AddApplicationOptions(appclassc, appclassv)) {
280 return(1);
281 }
282 } else {
283 /* Set default CLASSPATH */
284 char* cpath = getenv("CLASSPATH");
285 if (cpath != NULL) {
286 SetClassPath(cpath);
287 }
288 }
289
290 /* Parse command line options; if the return value of
291 * ParseArguments is false, the program should exit.
292 */
293 if (!ParseArguments(&argc, &argv, &mode, &what, &ret, jrepath))
294 {
295 return(ret);
296 }
297
298 /* Override class path if -jar flag was specified */
299 if (mode == LM_JAR) {
300 SetClassPath(what); /* Override class path */
301 }
302
303 /* set the -Dsun.java.command pseudo property */
304 SetJavaCommandLineProp(what, argc, argv);
305
306 /* Set the -Dsun.java.launcher pseudo property */
307 SetJavaLauncherProp();
308
309 /* set the -Dsun.java.launcher.* platform properties */
310 SetJavaLauncherPlatformProps();
311
312 return JVMInit(&ifn, threadStackSize, argc, argv, mode, what, ret);
313 }
314 /*
315 * Always detach the main thread so that it appears to have ended when
316 * the application's main method exits. This will invoke the
317 * uncaught exception handler machinery if main threw an
318 * exception. An uncaught exception handler cannot change the
319 * launcher's return code except by calling System.exit.
320 *
321 * Wait for all non-daemon threads to end, then destroy the VM.
322 * This will actually create a trivial new Java waiter thread
323 * named "DestroyJavaVM", but this will be seen as a different
324 * thread from the one that executed main, even though they are
325 * the same C thread. This allows mainThread.join() and
326 * mainThread.isAlive() to work as expected.
327 */
328 #define LEAVE() \
329 SetNativeThreadName(env, "DestroyJavaVM"); \
330 if ((*env)->ExceptionOccurred(env)) { \
331 /* Clear non critical pending exceptions at this point. */ \
332 (*env)->ExceptionClear(env); \
333 } \
334 do { \
335 if ((*vm)->DetachCurrentThread(vm) != JNI_OK) { \
336 JLI_ReportErrorMessage(JVM_ERROR2); \
337 ret = 1; \
338 } \
339 if (JNI_TRUE) { \
340 (*vm)->DestroyJavaVM(vm); \
341 return ret; \
342 } \
343 } while (JNI_FALSE)
344
345 #define CHECK_EXCEPTION_NULL_LEAVE(CENL_exception) \
346 do { \
347 if ((*env)->ExceptionOccurred(env)) { \
348 JLI_ReportExceptionDescription(env); \
349 LEAVE(); \
350 } \
351 if ((CENL_exception) == NULL) { \
352 JLI_ReportErrorMessage(JNI_ERROR); \
353 LEAVE(); \
354 } \
355 } while (JNI_FALSE)
356
357 #define CHECK_EXCEPTION_LEAVE(CEL_return_value) \
358 do { \
359 if ((*env)->ExceptionOccurred(env)) { \
360 JLI_ReportExceptionDescription(env); \
361 ret = (CEL_return_value); \
362 LEAVE(); \
363 } \
364 } while (JNI_FALSE)
365
366
367 int JNICALL
368 JavaMain(void * _args)
369 {
370 JavaMainArgs *args = (JavaMainArgs *)_args;
371 int argc = args->argc;
372 char **argv = args->argv;
373 int mode = args->mode;
374 char *what = args->what;
375 InvocationFunctions ifn = args->ifn;
376
377 JavaVM *vm = 0;
378 JNIEnv *env = 0;
379 jclass mainClass = NULL;
380 jclass appClass = NULL; // actual application class being launched
381 jmethodID mainID;
382 jobjectArray mainArgs;
383 int ret = 0;
384 jlong start, end;
385
386 RegisterThread();
387
388 /* Initialize the virtual machine */
389 start = CounterGet();
390 if (!InitializeJVM(&vm, &env, &ifn)) {
391 JLI_ReportErrorMessage(JVM_ERROR1);
392 exit(1);
393 }
394
395 SetNativeThreadName(env, "main");
396 if ((*env)->ExceptionOccurred(env)) {
397 /* Clear non critical pending exceptions at this point. */
398 (*env)->ExceptionClear(env);
399 }
400
401 if (showSettings != NULL) {
402 ShowSettings(env, showSettings);
403 CHECK_EXCEPTION_LEAVE(1);
404 }
405
406 if (listModules != NULL) {
407 ListModules(env, listModules);
408 CHECK_EXCEPTION_LEAVE(1);
409 LEAVE();
410 }
411
412 if (printVersion || showVersion) {
413 PrintJavaVersion(env, showVersion);
414 CHECK_EXCEPTION_LEAVE(0);
415 if (printVersion) {
416 LEAVE();
417 }
418 }
419
420 /* If the user specified neither a class name nor a JAR file */
421 if (printXUsage || printUsage || what == 0 || mode == LM_UNKNOWN) {
422 PrintUsage(env, printXUsage);
423 CHECK_EXCEPTION_LEAVE(1);
424 LEAVE();
425 }
426
427 FreeKnownVMs(); /* after last possible PrintUsage() */
428
429 if (JLI_IsTraceLauncher()) {
430 end = CounterGet();
431 JLI_TraceLauncher("%ld micro seconds to InitializeJVM\n",
432 (long)(jint)Counter2Micros(end-start));
433 }
434
435 /* At this stage, argc/argv have the application's arguments */
436 if (JLI_IsTraceLauncher()){
437 int i;
438 printf("%s is '%s'\n", launchModeNames[mode], what);
439 printf("App's argc is %d\n", argc);
440 for (i=0; i < argc; i++) {
441 printf(" argv[%2d] = '%s'\n", i, argv[i]);
442 }
443 }
444
445 ret = 1;
446
447 /*
448 * Get the application's main class.
449 *
450 * See bugid 5030265. The Main-Class name has already been parsed
451 * from the manifest, but not parsed properly for UTF-8 support.
452 * Hence the code here ignores the value previously extracted and
453 * uses the pre-existing code to reextract the value. This is
454 * possibly an end of release cycle expedient. However, it has
455 * also been discovered that passing some character sets through
456 * the environment has "strange" behavior on some variants of
457 * Windows. Hence, maybe the manifest parsing code local to the
458 * launcher should never be enhanced.
459 *
460 * Hence, future work should either:
461 * 1) Correct the local parsing code and verify that the
462 * Main-Class attribute gets properly passed through
463 * all environments,
464 * 2) Remove the vestages of maintaining main_class through
465 * the environment (and remove these comments).
466 *
467 * This method also correctly handles launching existing JavaFX
468 * applications that may or may not have a Main-Class manifest entry.
469 */
470 mainClass = LoadMainClass(env, mode, what);
471 CHECK_EXCEPTION_NULL_LEAVE(mainClass);
472 /*
473 * In some cases when launching an application that needs a helper, e.g., a
474 * JavaFX application with no main method, the mainClass will not be the
475 * applications own main class but rather a helper class. To keep things
476 * consistent in the UI we need to track and report the application main class.
477 */
478 appClass = GetApplicationClass(env);
479 NULL_CHECK_RETURN_VALUE(appClass, -1);
480 /*
481 * PostJVMInit uses the class name as the application name for GUI purposes,
482 * for example, on OSX this sets the application name in the menu bar for
483 * both SWT and JavaFX. So we'll pass the actual application class here
484 * instead of mainClass as that may be a launcher or helper class instead
485 * of the application class.
486 */
487 PostJVMInit(env, appClass, vm);
488 CHECK_EXCEPTION_LEAVE(1);
489 /*
490 * The LoadMainClass not only loads the main class, it will also ensure
491 * that the main method's signature is correct, therefore further checking
492 * is not required. The main method is invoked here so that extraneous java
493 * stacks are not in the application stack trace.
494 */
495 mainID = (*env)->GetStaticMethodID(env, mainClass, "main",
496 "([Ljava/lang/String;)V");
497 CHECK_EXCEPTION_NULL_LEAVE(mainID);
498
499 /* Build platform specific argument array */
500 mainArgs = CreateApplicationArgs(env, argv, argc);
501 CHECK_EXCEPTION_NULL_LEAVE(mainArgs);
502
503 /* Invoke main method. */
504 (*env)->CallStaticVoidMethod(env, mainClass, mainID, mainArgs);
505
506 /*
507 * The launcher's exit code (in the absence of calls to
508 * System.exit) will be non-zero if main threw an exception.
509 */
510 ret = (*env)->ExceptionOccurred(env) == NULL ? 0 : 1;
511 LEAVE();
512 }
513
514 /*
515 * Checks the command line options to find which JVM type was
516 * specified. If no command line option was given for the JVM type,
517 * the default type is used. The environment variable
518 * JDK_ALTERNATE_VM and the command line option -XXaltjvm= are also
519 * checked as ways of specifying which JVM type to invoke.
520 */
521 char *
522 CheckJvmType(int *pargc, char ***argv, jboolean speculative) {
523 int i, argi;
524 int argc;
525 char **newArgv;
526 int newArgvIdx = 0;
527 int isVMType;
528 int jvmidx = -1;
529 char *jvmtype = getenv("JDK_ALTERNATE_VM");
530
531 argc = *pargc;
532
533 /* To make things simpler we always copy the argv array */
534 newArgv = JLI_MemAlloc((argc + 1) * sizeof(char *));
535
536 /* The program name is always present */
537 newArgv[newArgvIdx++] = (*argv)[0];
538
539 for (argi = 1; argi < argc; argi++) {
540 char *arg = (*argv)[argi];
541 isVMType = 0;
542
543 if (IsJavaArgs()) {
544 if (arg[0] != '-') {
545 newArgv[newArgvIdx++] = arg;
546 continue;
547 }
548 } else {
549 if (JLI_StrCmp(arg, "-classpath") == 0 ||
550 JLI_StrCmp(arg, "-cp") == 0 ||
551 JLI_StrCmp(arg, "-modulepath") == 0 ||
552 JLI_StrCmp(arg, "-mp") == 0 ||
553 JLI_StrCmp(arg, "-upgrademodulepath") == 0 ||
554 JLI_StrCmp(arg, "-addmods") == 0 ||
555 JLI_StrCmp(arg, "-limitmods") == 0) {
556 newArgv[newArgvIdx++] = arg;
557 argi++;
558 if (argi < argc) {
559 newArgv[newArgvIdx++] = (*argv)[argi];
560 }
561 continue;
562 }
563 if (arg[0] != '-') break;
564 }
565
566 /* Did the user pass an explicit VM type? */
567 i = KnownVMIndex(arg);
568 if (i >= 0) {
569 jvmtype = knownVMs[jvmidx = i].name + 1; /* skip the - */
570 isVMType = 1;
571 *pargc = *pargc - 1;
572 }
573
574 /* Did the user specify an "alternate" VM? */
575 else if (JLI_StrCCmp(arg, "-XXaltjvm=") == 0 || JLI_StrCCmp(arg, "-J-XXaltjvm=") == 0) {
576 isVMType = 1;
577 jvmtype = arg+((arg[1]=='X')? 10 : 12);
578 jvmidx = -1;
579 }
580
581 if (!isVMType) {
582 newArgv[newArgvIdx++] = arg;
583 }
584 }
585
586 /*
587 * Finish copying the arguments if we aborted the above loop.
588 * NOTE that if we aborted via "break" then we did NOT copy the
589 * last argument above, and in addition argi will be less than
590 * argc.
591 */
592 while (argi < argc) {
593 newArgv[newArgvIdx++] = (*argv)[argi];
594 argi++;
595 }
596
597 /* argv is null-terminated */
598 newArgv[newArgvIdx] = 0;
599
600 /* Copy back argv */
601 *argv = newArgv;
602 *pargc = newArgvIdx;
603
604 /* use the default VM type if not specified (no alias processing) */
605 if (jvmtype == NULL) {
606 char* result = knownVMs[0].name+1;
607 /* Use a different VM type if we are on a server class machine? */
608 if ((knownVMs[0].flag == VM_IF_SERVER_CLASS) &&
609 (ServerClassMachine() == JNI_TRUE)) {
610 result = knownVMs[0].server_class+1;
611 }
612 JLI_TraceLauncher("Default VM: %s\n", result);
613 return result;
614 }
615
616 /* if using an alternate VM, no alias processing */
617 if (jvmidx < 0)
618 return jvmtype;
619
620 /* Resolve aliases first */
621 {
622 int loopCount = 0;
623 while (knownVMs[jvmidx].flag == VM_ALIASED_TO) {
624 int nextIdx = KnownVMIndex(knownVMs[jvmidx].alias);
625
626 if (loopCount > knownVMsCount) {
627 if (!speculative) {
628 JLI_ReportErrorMessage(CFG_ERROR1);
629 exit(1);
630 } else {
631 return "ERROR";
632 /* break; */
633 }
634 }
635
636 if (nextIdx < 0) {
637 if (!speculative) {
638 JLI_ReportErrorMessage(CFG_ERROR2, knownVMs[jvmidx].alias);
639 exit(1);
640 } else {
641 return "ERROR";
642 }
643 }
644 jvmidx = nextIdx;
645 jvmtype = knownVMs[jvmidx].name+1;
646 loopCount++;
647 }
648 }
649
650 switch (knownVMs[jvmidx].flag) {
651 case VM_WARN:
652 if (!speculative) {
653 JLI_ReportErrorMessage(CFG_WARN1, jvmtype, knownVMs[0].name + 1);
654 }
655 /* fall through */
656 case VM_IGNORE:
657 jvmtype = knownVMs[jvmidx=0].name + 1;
658 /* fall through */
659 case VM_KNOWN:
660 break;
661 case VM_ERROR:
662 if (!speculative) {
663 JLI_ReportErrorMessage(CFG_ERROR3, jvmtype);
664 exit(1);
665 } else {
666 return "ERROR";
667 }
668 }
669
670 return jvmtype;
671 }
672
673 /*
674 * static void SetJvmEnvironment(int argc, char **argv);
675 * Is called just before the JVM is loaded. We can set env variables
676 * that are consumed by the JVM. This function is non-destructive,
677 * leaving the arg list intact. The first use is for the JVM flag
678 * -XX:NativeMemoryTracking=value.
679 */
680 static void
681 SetJvmEnvironment(int argc, char **argv) {
682
683 static const char* NMT_Env_Name = "NMT_LEVEL_";
684 int i;
685 for (i = 0; i < argc; i++) {
686 char *arg = argv[i];
687 /*
688 * Since this must be a VM flag we stop processing once we see
689 * an argument the launcher would not have processed beyond (such
690 * as -version or -h), or an argument that indicates the following
691 * arguments are for the application (i.e. the main class name, or
692 * the -jar argument).
693 */
694 if (i > 0) {
695 char *prev = argv[i - 1];
696 // skip non-dash arg preceded by class path specifiers
697 if (*arg != '-' &&
698 ((JLI_StrCmp(prev, "-cp") == 0
699 || JLI_StrCmp(prev, "-classpath") == 0))) {
700 continue;
701 }
702
703 if (*arg != '-'
704 || JLI_StrCmp(arg, "-version") == 0
705 || JLI_StrCmp(arg, "-fullversion") == 0
706 || JLI_StrCmp(arg, "-help") == 0
707 || JLI_StrCmp(arg, "-?") == 0
708 || JLI_StrCmp(arg, "-jar") == 0
709 || JLI_StrCmp(arg, "-X") == 0) {
710 return;
711 }
712 }
713 /*
714 * The following case checks for "-XX:NativeMemoryTracking=value".
715 * If value is non null, an environmental variable set to this value
716 * will be created to be used by the JVM.
717 * The argument is passed to the JVM, which will check validity.
718 * The JVM is responsible for removing the env variable.
719 */
720 if (JLI_StrCCmp(arg, "-XX:NativeMemoryTracking=") == 0) {
721 int retval;
722 // get what follows this parameter, include "="
723 size_t pnlen = JLI_StrLen("-XX:NativeMemoryTracking=");
724 if (JLI_StrLen(arg) > pnlen) {
725 char* value = arg + pnlen;
726 size_t pbuflen = pnlen + JLI_StrLen(value) + 10; // 10 max pid digits
727
728 /*
729 * ensures that malloc successful
730 * DONT JLI_MemFree() pbuf. JLI_PutEnv() uses system call
731 * that could store the address.
732 */
733 char * pbuf = (char*)JLI_MemAlloc(pbuflen);
734
735 JLI_Snprintf(pbuf, pbuflen, "%s%d=%s", NMT_Env_Name, JLI_GetPid(), value);
736 retval = JLI_PutEnv(pbuf);
737 if (JLI_IsTraceLauncher()) {
738 char* envName;
739 char* envBuf;
740
741 // ensures that malloc successful
742 envName = (char*)JLI_MemAlloc(pbuflen);
743 JLI_Snprintf(envName, pbuflen, "%s%d", NMT_Env_Name, JLI_GetPid());
744
745 printf("TRACER_MARKER: NativeMemoryTracking: env var is %s\n",envName);
746 printf("TRACER_MARKER: NativeMemoryTracking: putenv arg %s\n",pbuf);
747 envBuf = getenv(envName);
748 printf("TRACER_MARKER: NativeMemoryTracking: got value %s\n",envBuf);
749 free(envName);
750 }
751
752 }
753
754 }
755
756 }
757 }
758
759 /* copied from HotSpot function "atomll()" */
760 static int
761 parse_size(const char *s, jlong *result) {
762 jlong n = 0;
763 int args_read = sscanf(s, JLONG_FORMAT_SPECIFIER, &n);
764 if (args_read != 1) {
765 return 0;
766 }
767 while (*s != '\0' && *s >= '0' && *s <= '9') {
768 s++;
769 }
770 // 4705540: illegal if more characters are found after the first non-digit
771 if (JLI_StrLen(s) > 1) {
772 return 0;
773 }
774 switch (*s) {
775 case 'T': case 't':
776 *result = n * GB * KB;
777 return 1;
778 case 'G': case 'g':
779 *result = n * GB;
780 return 1;
781 case 'M': case 'm':
782 *result = n * MB;
783 return 1;
784 case 'K': case 'k':
785 *result = n * KB;
786 return 1;
787 case '\0':
788 *result = n;
789 return 1;
790 default:
791 /* Create JVM with default stack and let VM handle malformed -Xss string*/
792 return 0;
793 }
794 }
795
796 /*
797 * Adds a new VM option with the given name and value.
798 */
799 void
800 AddOption(char *str, void *info)
801 {
802 /*
803 * Expand options array if needed to accommodate at least one more
804 * VM option.
805 */
806 if (numOptions >= maxOptions) {
807 if (options == 0) {
808 maxOptions = 4;
809 options = JLI_MemAlloc(maxOptions * sizeof(JavaVMOption));
810 } else {
811 JavaVMOption *tmp;
812 maxOptions *= 2;
813 tmp = JLI_MemAlloc(maxOptions * sizeof(JavaVMOption));
814 memcpy(tmp, options, numOptions * sizeof(JavaVMOption));
815 JLI_MemFree(options);
816 options = tmp;
817 }
818 }
819 options[numOptions].optionString = str;
820 options[numOptions++].extraInfo = info;
821
822 if (JLI_StrCCmp(str, "-Xss") == 0) {
823 jlong tmp;
824 if (parse_size(str + 4, &tmp)) {
825 threadStackSize = tmp;
826 /*
827 * Make sure the thread stack size is big enough that we won't get a stack
828 * overflow before the JVM startup code can check to make sure the stack
829 * is big enough.
830 */
831 if (threadStackSize < (jlong)STACK_SIZE_MINIMUM) {
832 threadStackSize = STACK_SIZE_MINIMUM;
833 }
834 }
835 }
836
837 if (JLI_StrCCmp(str, "-Xmx") == 0) {
838 jlong tmp;
839 if (parse_size(str + 4, &tmp)) {
840 maxHeapSize = tmp;
841 }
842 }
843
844 if (JLI_StrCCmp(str, "-Xms") == 0) {
845 jlong tmp;
846 if (parse_size(str + 4, &tmp)) {
847 initialHeapSize = tmp;
848 }
849 }
850 }
851
852 static void
853 SetClassPath(const char *s)
854 {
855 char *def;
856 const char *orig = s;
857 static const char format[] = "-Djava.class.path=%s";
858 /*
859 * usually we should not get a null pointer, but there are cases where
860 * we might just get one, in which case we simply ignore it, and let the
861 * caller deal with it
862 */
863 if (s == NULL)
864 return;
865 s = JLI_WildcardExpandClasspath(s);
866 if (sizeof(format) - 2 + JLI_StrLen(s) < JLI_StrLen(s))
867 // s is became corrupted after expanding wildcards
868 return;
869 def = JLI_MemAlloc(sizeof(format)
870 - 2 /* strlen("%s") */
871 + JLI_StrLen(s));
872 sprintf(def, format, s);
873 AddOption(def, NULL);
874 if (s != orig)
875 JLI_MemFree((char *) s);
876 _have_classpath = JNI_TRUE;
877 }
878
879 static void
880 SetModulePath(const char *s)
881 {
882 char *def;
883 const char *orig = s;
884 static const char format[] = "-Djdk.module.path=%s";
885 if (s == NULL)
886 return;
887 s = JLI_WildcardExpandClasspath(s);
888 def = JLI_MemAlloc(sizeof(format)
889 - 2 /* strlen("%s") */
890 + JLI_StrLen(s));
891 sprintf(def, format, s);
892 AddOption(def, NULL);
893 if (s != orig)
894 JLI_MemFree((char *) s);
895 }
896
897 static void
898 SetUpgradeModulePath(const char *s)
899 {
900 char *def;
901 const char *orig = s;
902 static const char format[] = "-Djdk.upgrade.module.path=%s";
903 if (s == NULL)
904 return;
905 s = JLI_WildcardExpandClasspath(s);
906 def = JLI_MemAlloc(sizeof(format)
907 - 2 /* strlen("%s") */
908 + JLI_StrLen(s));
909 sprintf(def, format, s);
910 AddOption(def, NULL);
911 if (s != orig)
912 JLI_MemFree((char *) s);
913 }
914
915 static void
916 SetMainModule(const char *s)
917 {
918 static const char format[] = "-Djdk.module.main=%s";
919 char* slash = JLI_StrChr(s, '/');
920 size_t s_len, def_len;
921 char *def;
922
923 /* value may be <module> or <module>/<mainclass> */
924 if (slash == NULL) {
925 s_len = JLI_StrLen(s);
926 } else {
927 s_len = (size_t) (slash - s);
928 }
929 def_len = sizeof(format)
930 - 2 /* strlen("%s") */
931 + s_len;
932 def = JLI_MemAlloc(def_len);
933 JLI_Snprintf(def, def_len, format, s);
934 AddOption(def, NULL);
935 }
936
937 static void
938 SetAddModulesProp(const char *mods) {
939 size_t buflen = JLI_StrLen(mods) + 40;
940 char *prop = (char *)JLI_MemAlloc(buflen);
941 JLI_Snprintf(prop, buflen, "-Djdk.launcher.addmods=%s", mods);
942 AddOption(prop, NULL);
943 }
944
945 static void
946 SetLimitModulesProp(const char *mods) {
947 size_t buflen = JLI_StrLen(mods) + 40;
948 char *prop = (char *)JLI_MemAlloc(buflen);
949 JLI_Snprintf(prop, buflen, "-Djdk.launcher.limitmods=%s", mods);
950 AddOption(prop, NULL);
951 }
952
953 static void
954 SetAddReadsProp(const jint n, const char *s) {
955 size_t buflen = JLI_StrLen(s) + 40;
956 char *prop = (char *)JLI_MemAlloc(buflen);
957 JLI_Snprintf(prop, buflen, "-Djdk.launcher.addreads.%d=%s", n, s);
958 AddOption(prop, NULL);
959 }
960
961 static void
962 SetAddExportsProp(const jint n, const char *s) {
963 size_t buflen = JLI_StrLen(s) + 40;
964 char *prop = (char *)JLI_MemAlloc(buflen);
965 JLI_Snprintf(prop, buflen, "-Djdk.launcher.addexports.%d=%s", n, s);
966 AddOption(prop, NULL);
967 }
968
969 static void
970 SetPatchProp(const jint n, const char *s) {
971 size_t buflen = JLI_StrLen(s) + 40;
972 char *prop = (char *)JLI_MemAlloc(buflen);
973 JLI_Snprintf(prop, buflen, "-Djdk.launcher.patch.%d=%s", n, s);
974 AddOption(prop, NULL);
975 }
976
977 /*
978 * The SelectVersion() routine ensures that an appropriate version of
979 * the JRE is running. The specification for the appropriate version
980 * is obtained from either the manifest of a jar file (preferred) or
981 * from command line options.
982 * The routine also parses splash screen command line options and
983 * passes on their values in private environment variables.
984 */
985 static void
986 SelectVersion(int argc, char **argv, char **main_class)
987 {
988 char *arg;
989 char *operand;
990 char *version = NULL;
991 char *jre = NULL;
992 int jarflag = 0;
993 int headlessflag = 0;
994 int restrict_search = -1; /* -1 implies not known */
995 manifest_info info;
996 char env_entry[MAXNAMELEN + 24] = ENV_ENTRY "=";
997 char *splash_file_name = NULL;
998 char *splash_jar_name = NULL;
999 char *env_in;
1000 int res;
1001
1002 /*
1003 * If the version has already been selected, set *main_class
1004 * with the value passed through the environment (if any) and
1005 * simply return.
1006 */
1007
1008 /*
1009 * This environmental variable can be set by mJRE capable JREs
1010 * [ 1.5 thru 1.8 ]. All other aspects of mJRE processing have been
1011 * stripped by those JREs. This environmental variable allows 1.9+
1012 * JREs to be started by these mJRE capable JREs.
1013 * Note that mJRE directives in the jar manifest file would have been
1014 * ignored for a JRE started by another JRE...
1015 * .. skipped for JRE 1.5 and beyond.
1016 * .. not even checked for pre 1.5.
1017 */
1018 if ((env_in = getenv(ENV_ENTRY)) != NULL) {
1019 if (*env_in != '\0')
1020 *main_class = JLI_StringDup(env_in);
1021 return;
1022 }
1023
1024 /*
1025 * Scan through the arguments for options relevant to multiple JRE
1026 * support. Multiple JRE support existed in JRE versions 1.5 thru 1.8.
1027 *
1028 * This capability is no longer available with JRE versions 1.9 and later.
1029 * These command line options are reported as errors.
1030 */
1031 argc--;
1032 argv++;
1033 while ((arg = *argv) != 0 && *arg == '-') {
1034 if (JLI_StrCCmp(arg, "-version:") == 0) {
1035 JLI_ReportErrorMessage(SPC_ERROR1);
1036 } else if (JLI_StrCmp(arg, "-jre-restrict-search") == 0) {
1037 JLI_ReportErrorMessage(SPC_ERROR2);
1038 } else if (JLI_StrCmp(arg, "-jre-no-restrict-search") == 0) {
1039 JLI_ReportErrorMessage(SPC_ERROR2);
1040 } else {
1041 if (JLI_StrCmp(arg, "-jar") == 0)
1042 jarflag = 1;
1043 /* deal with "unfortunate" classpath syntax */
1044 if ((JLI_StrCmp(arg, "-classpath") == 0 || JLI_StrCmp(arg, "-cp") == 0) &&
1045 (argc >= 2)) {
1046 argc--;
1047 argv++;
1048 arg = *argv;
1049 }
1050
1051 /*
1052 * Checking for headless toolkit option in the some way as AWT does:
1053 * "true" means true and any other value means false
1054 */
1055 if (JLI_StrCmp(arg, "-Djava.awt.headless=true") == 0) {
1056 headlessflag = 1;
1057 } else if (JLI_StrCCmp(arg, "-Djava.awt.headless=") == 0) {
1058 headlessflag = 0;
1059 } else if (JLI_StrCCmp(arg, "-splash:") == 0) {
1060 splash_file_name = arg+8;
1061 }
1062 }
1063 argc--;
1064 argv++;
1065 }
1066 if (argc <= 0) { /* No operand? Possibly legit with -[full]version */
1067 operand = NULL;
1068 } else {
1069 argc--;
1070 operand = *argv++;
1071 }
1072
1073 /*
1074 * If there is a jar file, read the manifest. If the jarfile can't be
1075 * read, the manifest can't be read from the jar file, or the manifest
1076 * is corrupt, issue the appropriate error messages and exit.
1077 *
1078 * Even if there isn't a jar file, construct a manifest_info structure
1079 * containing the command line information. It's a convenient way to carry
1080 * this data around.
1081 */
1082 if (jarflag && operand) {
1083 if ((res = JLI_ParseManifest(operand, &info)) != 0) {
1084 if (res == -1)
1085 JLI_ReportErrorMessage(JAR_ERROR2, operand);
1086 else
1087 JLI_ReportErrorMessage(JAR_ERROR3, operand);
1088 exit(1);
1089 }
1090
1091 /*
1092 * Command line splash screen option should have precedence
1093 * over the manifest, so the manifest data is used only if
1094 * splash_file_name has not been initialized above during command
1095 * line parsing
1096 */
1097 if (!headlessflag && !splash_file_name && info.splashscreen_image_file_name) {
1098 splash_file_name = info.splashscreen_image_file_name;
1099 splash_jar_name = operand;
1100 }
1101 } else {
1102 info.manifest_version = NULL;
1103 info.main_class = NULL;
1104 info.jre_version = NULL;
1105 info.jre_restrict_search = 0;
1106 }
1107
1108 /*
1109 * Passing on splash screen info in environment variables
1110 */
1111 if (splash_file_name && !headlessflag) {
1112 char* splash_file_entry = JLI_MemAlloc(JLI_StrLen(SPLASH_FILE_ENV_ENTRY "=")+JLI_StrLen(splash_file_name)+1);
1113 JLI_StrCpy(splash_file_entry, SPLASH_FILE_ENV_ENTRY "=");
1114 JLI_StrCat(splash_file_entry, splash_file_name);
1115 putenv(splash_file_entry);
1116 }
1117 if (splash_jar_name && !headlessflag) {
1118 char* splash_jar_entry = JLI_MemAlloc(JLI_StrLen(SPLASH_JAR_ENV_ENTRY "=")+JLI_StrLen(splash_jar_name)+1);
1119 JLI_StrCpy(splash_jar_entry, SPLASH_JAR_ENV_ENTRY "=");
1120 JLI_StrCat(splash_jar_entry, splash_jar_name);
1121 putenv(splash_jar_entry);
1122 }
1123
1124
1125 /*
1126 * "Valid" returns (other than unrecoverable errors) follow. Set
1127 * main_class as a side-effect of this routine.
1128 */
1129 if (info.main_class != NULL)
1130 *main_class = JLI_StringDup(info.main_class);
1131
1132 if (info.jre_version == NULL) {
1133 JLI_FreeManifest();
1134 return;
1135 }
1136
1137 }
1138
1139 /*
1140 * Parses command line arguments. Returns JNI_FALSE if launcher
1141 * should exit without starting vm, returns JNI_TRUE if vm needs
1142 * to be started to process given options. *pret (the launcher
1143 * process return value) is set to 0 for a normal exit.
1144 */
1145 static jboolean
1146 ParseArguments(int *pargc, char ***pargv,
1147 int *pmode, char **pwhat,
1148 int *pret, const char *jrepath)
1149 {
1150 int argc = *pargc;
1151 char **argv = *pargv;
1152 int mode = LM_UNKNOWN;
1153 char *arg;
1154
1155 *pret = 0;
1156
1157 while ((arg = *argv) != 0 && *arg == '-') {
1158 argv++; --argc;
1159 if (JLI_StrCmp(arg, "-classpath") == 0 || JLI_StrCmp(arg, "-cp") == 0) {
1160 ARG_CHECK (argc, ARG_ERROR1, arg);
1161 SetClassPath(*argv);
1162 mode = LM_CLASS;
1163 argv++; --argc;
1164 } else if (JLI_StrCmp(arg, "-modulepath") == 0 || JLI_StrCmp(arg, "-mp") == 0) {
1165 ARG_CHECK (argc, ARG_ERROR4, arg);
1166 SetModulePath(*argv);
1167 argv++; --argc;
1168 } else if (JLI_StrCmp(arg, "-upgrademodulepath") == 0) {
1169 ARG_CHECK (argc, ARG_ERROR4, arg);
1170 SetUpgradeModulePath(*argv);
1171 argv++; --argc;
1172 } else if (JLI_StrCmp(arg, "-jar") == 0) {
1173 ARG_CHECK (argc, ARG_ERROR2, arg);
1174 mode = LM_JAR;
1175 } else if (JLI_StrCmp(arg, "-m") == 0) {
1176 ARG_CHECK (argc, ARG_ERROR5, arg);
1177 SetMainModule(*argv);
1178 mode = LM_MODULE;
1179 } else if (JLI_StrCmp(arg, "-addmods") == 0) {
1180 ARG_CHECK (argc, ARG_ERROR6, arg);
1181 SetAddModulesProp(*argv);
1182 argv++; --argc;
1183 } else if (JLI_StrCmp(arg, "-limitmods") == 0) {
1184 ARG_CHECK (argc, ARG_ERROR6, arg);
1185 SetLimitModulesProp(*argv);
1186 argv++; --argc;
1187 } else if (JLI_StrCmp(arg, "-listmods") == 0 ||
1188 JLI_StrCCmp(arg, "-listmods:") == 0) {
1189 listModules = arg;
1190 return JNI_TRUE;
1191 } else if (JLI_StrCCmp(arg, "-XaddReads:") == 0) {
1192 static jint n;
1193 char *value = arg + 11;
1194 SetAddReadsProp(n++, value);
1195 } else if (JLI_StrCCmp(arg, "-XaddExports:") == 0) {
1196 static jint n;
1197 char *value = arg + 13;
1198 SetAddExportsProp(n++, value);
1199 } else if (JLI_StrCCmp(arg, "-Xpatch:") == 0) {
1200 static jint n;
1201 char *value = arg + 8;
1202 SetPatchProp(n++, value);
1203 } else if (JLI_StrCmp(arg, "-help") == 0 ||
1204 JLI_StrCmp(arg, "-h") == 0 ||
1205 JLI_StrCmp(arg, "-?") == 0) {
1206 printUsage = JNI_TRUE;
1207 return JNI_TRUE;
1208 } else if (JLI_StrCmp(arg, "-version") == 0) {
1209 printVersion = JNI_TRUE;
1210 return JNI_TRUE;
1211 } else if (JLI_StrCmp(arg, "-showversion") == 0) {
1212 showVersion = JNI_TRUE;
1213 } else if (JLI_StrCmp(arg, "-X") == 0) {
1214 printXUsage = JNI_TRUE;
1215 return JNI_TRUE;
1216 /*
1217 * The following case checks for -XshowSettings OR -XshowSetting:SUBOPT.
1218 * In the latter case, any SUBOPT value not recognized will default to "all"
1219 */
1220 } else if (JLI_StrCmp(arg, "-XshowSettings") == 0 ||
1221 JLI_StrCCmp(arg, "-XshowSettings:") == 0) {
1222 showSettings = arg;
1223 } else if (JLI_StrCmp(arg, "-Xdiag") == 0) {
1224 AddOption("-Dsun.java.launcher.diag=true", NULL);
1225 AddOption("-Djdk.launcher.traceResolver=true", NULL);
1226 } else if (JLI_StrCmp(arg, "-Xdiag:resolver") == 0) {
1227 AddOption("-Djdk.launcher.traceResolver=true", NULL);
1228 /*
1229 * The following case provide backward compatibility with old-style
1230 * command line options.
1231 */
1232 } else if (JLI_StrCmp(arg, "-fullversion") == 0) {
1233 JLI_ReportMessage("%s full version \"%s\"", _launcher_name, GetFullVersion());
1234 return JNI_FALSE;
1235 } else if (JLI_StrCmp(arg, "-verbosegc") == 0) {
1236 AddOption("-verbose:gc", NULL);
1237 } else if (JLI_StrCmp(arg, "-t") == 0) {
1238 AddOption("-Xt", NULL);
1239 } else if (JLI_StrCmp(arg, "-tm") == 0) {
1240 AddOption("-Xtm", NULL);
1241 } else if (JLI_StrCmp(arg, "-debug") == 0) {
1242 AddOption("-Xdebug", NULL);
1243 } else if (JLI_StrCmp(arg, "-noclassgc") == 0) {
1244 AddOption("-Xnoclassgc", NULL);
1245 } else if (JLI_StrCmp(arg, "-Xfuture") == 0) {
1246 AddOption("-Xverify:all", NULL);
1247 } else if (JLI_StrCmp(arg, "-verify") == 0) {
1248 AddOption("-Xverify:all", NULL);
1249 } else if (JLI_StrCmp(arg, "-verifyremote") == 0) {
1250 AddOption("-Xverify:remote", NULL);
1251 } else if (JLI_StrCmp(arg, "-noverify") == 0) {
1252 AddOption("-Xverify:none", NULL);
1253 } else if (JLI_StrCCmp(arg, "-ss") == 0 ||
1254 JLI_StrCCmp(arg, "-oss") == 0 ||
1255 JLI_StrCCmp(arg, "-ms") == 0 ||
1256 JLI_StrCCmp(arg, "-mx") == 0) {
1257 char *tmp = JLI_MemAlloc(JLI_StrLen(arg) + 6);
1258 sprintf(tmp, "-X%s", arg + 1); /* skip '-' */
1259 AddOption(tmp, NULL);
1260 } else if (JLI_StrCmp(arg, "-checksource") == 0 ||
1261 JLI_StrCmp(arg, "-cs") == 0 ||
1262 JLI_StrCmp(arg, "-noasyncgc") == 0) {
1263 /* No longer supported */
1264 JLI_ReportErrorMessage(ARG_WARN, arg);
1265 } else if (JLI_StrCCmp(arg, "-splash:") == 0) {
1266 ; /* Ignore machine independent options already handled */
1267 } else if (ProcessPlatformOption(arg)) {
1268 ; /* Processing of platform dependent options */
1269 } else if (RemovableOption(arg)) {
1270 ; /* Do not pass option to vm. */
1271 } else {
1272 /* java.class.path set on the command line */
1273 if (JLI_StrCCmp(arg, "-Djava.class.path=") == 0) {
1274 _have_classpath = JNI_TRUE;
1275 }
1276 AddOption(arg, NULL);
1277 }
1278 }
1279
1280 if (--argc >= 0) {
1281 *pwhat = *argv++;
1282 }
1283
1284 if (*pwhat == NULL) {
1285 *pret = 1;
1286 } else if (mode == LM_UNKNOWN) {
1287 /* default to LM_CLASS if -m, -jar and -cp options are
1288 * not specified */
1289 if (!_have_classpath) {
1290 SetClassPath(".");
1291 }
1292 mode = LM_CLASS;
1293 }
1294
1295 if (argc >= 0) {
1296 *pargc = argc;
1297 *pargv = argv;
1298 }
1299
1300 *pmode = mode;
1301
1302 return JNI_TRUE;
1303 }
1304
1305 /*
1306 * Initializes the Java Virtual Machine. Also frees options array when
1307 * finished.
1308 */
1309 static jboolean
1310 InitializeJVM(JavaVM **pvm, JNIEnv **penv, InvocationFunctions *ifn)
1311 {
1312 JavaVMInitArgs args;
1313 jint r;
1314
1315 memset(&args, 0, sizeof(args));
1316 args.version = JNI_VERSION_1_2;
1317 args.nOptions = numOptions;
1318 args.options = options;
1319 args.ignoreUnrecognized = JNI_FALSE;
1320
1321 if (JLI_IsTraceLauncher()) {
1322 int i = 0;
1323 printf("JavaVM args:\n ");
1324 printf("version 0x%08lx, ", (long)args.version);
1325 printf("ignoreUnrecognized is %s, ",
1326 args.ignoreUnrecognized ? "JNI_TRUE" : "JNI_FALSE");
1327 printf("nOptions is %ld\n", (long)args.nOptions);
1328 for (i = 0; i < numOptions; i++)
1329 printf(" option[%2d] = '%s'\n",
1330 i, args.options[i].optionString);
1331 }
1332
1333 r = ifn->CreateJavaVM(pvm, (void **)penv, &args);
1334 JLI_MemFree(options);
1335 return r == JNI_OK;
1336 }
1337
1338 static jclass helperClass = NULL;
1339
1340 jclass
1341 GetLauncherHelperClass(JNIEnv *env)
1342 {
1343 if (helperClass == NULL) {
1344 NULL_CHECK0(helperClass = FindBootStrapClass(env,
1345 "sun/launcher/LauncherHelper"));
1346 }
1347 return helperClass;
1348 }
1349
1350 static jmethodID makePlatformStringMID = NULL;
1351 /*
1352 * Returns a new Java string object for the specified platform string.
1353 */
1354 static jstring
1355 NewPlatformString(JNIEnv *env, char *s)
1356 {
1357 int len = (int)JLI_StrLen(s);
1358 jbyteArray ary;
1359 jclass cls = GetLauncherHelperClass(env);
1360 NULL_CHECK0(cls);
1361 if (s == NULL)
1362 return 0;
1363
1364 ary = (*env)->NewByteArray(env, len);
1365 if (ary != 0) {
1366 jstring str = 0;
1367 (*env)->SetByteArrayRegion(env, ary, 0, len, (jbyte *)s);
1368 if (!(*env)->ExceptionOccurred(env)) {
1369 if (makePlatformStringMID == NULL) {
1370 NULL_CHECK0(makePlatformStringMID = (*env)->GetStaticMethodID(env,
1371 cls, "makePlatformString", "(Z[B)Ljava/lang/String;"));
1372 }
1373 str = (*env)->CallStaticObjectMethod(env, cls,
1374 makePlatformStringMID, USE_STDERR, ary);
1375 (*env)->DeleteLocalRef(env, ary);
1376 return str;
1377 }
1378 }
1379 return 0;
1380 }
1381
1382 /*
1383 * Returns a new array of Java string objects for the specified
1384 * array of platform strings.
1385 */
1386 jobjectArray
1387 NewPlatformStringArray(JNIEnv *env, char **strv, int strc)
1388 {
1389 jarray cls;
1390 jarray ary;
1391 int i;
1392
1393 NULL_CHECK0(cls = FindBootStrapClass(env, "java/lang/String"));
1394 NULL_CHECK0(ary = (*env)->NewObjectArray(env, strc, cls, 0));
1395 for (i = 0; i < strc; i++) {
1396 jstring str = NewPlatformString(env, *strv++);
1397 NULL_CHECK0(str);
1398 (*env)->SetObjectArrayElement(env, ary, i, str);
1399 (*env)->DeleteLocalRef(env, str);
1400 }
1401 return ary;
1402 }
1403
1404 /*
1405 * Loads a class and verifies that the main class is present and it is ok to
1406 * call it for more details refer to the java implementation.
1407 */
1408 static jclass
1409 LoadMainClass(JNIEnv *env, int mode, char *name)
1410 {
1411 jmethodID mid;
1412 jstring str;
1413 jobject result;
1414 jlong start, end;
1415 jclass cls = GetLauncherHelperClass(env);
1416 NULL_CHECK0(cls);
1417 if (JLI_IsTraceLauncher()) {
1418 start = CounterGet();
1419 }
1420 NULL_CHECK0(mid = (*env)->GetStaticMethodID(env, cls,
1421 "checkAndLoadMain",
1422 "(ZILjava/lang/String;)Ljava/lang/Class;"));
1423
1424 NULL_CHECK0(str = NewPlatformString(env, name));
1425 NULL_CHECK0(result = (*env)->CallStaticObjectMethod(env, cls, mid,
1426 USE_STDERR, mode, str));
1427
1428 if (JLI_IsTraceLauncher()) {
1429 end = CounterGet();
1430 printf("%ld micro seconds to load main class\n",
1431 (long)(jint)Counter2Micros(end-start));
1432 printf("----%s----\n", JLDEBUG_ENV_ENTRY);
1433 }
1434
1435 return (jclass)result;
1436 }
1437
1438 static jclass
1439 GetApplicationClass(JNIEnv *env)
1440 {
1441 jmethodID mid;
1442 jclass cls = GetLauncherHelperClass(env);
1443 NULL_CHECK0(cls);
1444 NULL_CHECK0(mid = (*env)->GetStaticMethodID(env, cls,
1445 "getApplicationClass",
1446 "()Ljava/lang/Class;"));
1447
1448 return (*env)->CallStaticObjectMethod(env, cls, mid);
1449 }
1450
1451 /*
1452 * For tools, convert command line args thus:
1453 * javac -cp foo:foo/"*" -J-ms32m ...
1454 * java -ms32m -cp JLI_WildcardExpandClasspath(foo:foo/"*") ...
1455 *
1456 * Takes 4 parameters, and returns the populated arguments
1457 */
1458 static void
1459 TranslateApplicationArgs(int jargc, const char **jargv, int *pargc, char ***pargv)
1460 {
1461 int argc = *pargc;
1462 char **argv = *pargv;
1463 int nargc = argc + jargc;
1464 char **nargv = JLI_MemAlloc((nargc + 1) * sizeof(char *));
1465 int i;
1466
1467 *pargc = nargc;
1468 *pargv = nargv;
1469
1470 /* Copy the VM arguments (i.e. prefixed with -J) */
1471 for (i = 0; i < jargc; i++) {
1472 const char *arg = jargv[i];
1473 if (arg[0] == '-' && arg[1] == 'J') {
1474 *nargv++ = ((arg + 2) == NULL) ? NULL : JLI_StringDup(arg + 2);
1475 }
1476 }
1477
1478 for (i = 0; i < argc; i++) {
1479 char *arg = argv[i];
1480 if (arg[0] == '-' && arg[1] == 'J') {
1481 if (arg[2] == '\0') {
1482 JLI_ReportErrorMessage(ARG_ERROR3);
1483 exit(1);
1484 }
1485 *nargv++ = arg + 2;
1486 }
1487 }
1488
1489 /* Copy the rest of the arguments */
1490 for (i = 0; i < jargc ; i++) {
1491 const char *arg = jargv[i];
1492 if (arg[0] != '-' || arg[1] != 'J') {
1493 *nargv++ = (arg == NULL) ? NULL : JLI_StringDup(arg);
1494 }
1495 }
1496 for (i = 0; i < argc; i++) {
1497 char *arg = argv[i];
1498 if (arg[0] == '-') {
1499 if (arg[1] == 'J')
1500 continue;
1501 if (IsWildCardEnabled() && arg[1] == 'c'
1502 && (JLI_StrCmp(arg, "-cp") == 0 ||
1503 JLI_StrCmp(arg, "-classpath") == 0)
1504 && i < argc - 1) {
1505 *nargv++ = arg;
1506 *nargv++ = (char *) JLI_WildcardExpandClasspath(argv[i+1]);
1507 i++;
1508 continue;
1509 }
1510 }
1511 *nargv++ = arg;
1512 }
1513 *nargv = 0;
1514 }
1515
1516 /*
1517 * For our tools, we try to add 3 VM options:
1518 * -Denv.class.path=<envcp>
1519 * -Dapplication.home=<apphome>
1520 * -Djava.class.path=<appcp>
1521 * <envcp> is the user's setting of CLASSPATH -- for instance the user
1522 * tells javac where to find binary classes through this environment
1523 * variable. Notice that users will be able to compile against our
1524 * tools classes (sun.tools.javac.Main) only if they explicitly add
1525 * tools.jar to CLASSPATH.
1526 * <apphome> is the directory where the application is installed.
1527 * <appcp> is the classpath to where our apps' classfiles are.
1528 */
1529 static jboolean
1530 AddApplicationOptions(int cpathc, const char **cpathv)
1531 {
1532 char *envcp, *appcp, *apphome;
1533 char home[MAXPATHLEN]; /* application home */
1534 char separator[] = { PATH_SEPARATOR, '\0' };
1535 int size, i;
1536
1537 {
1538 const char *s = getenv("CLASSPATH");
1539 if (s) {
1540 s = (char *) JLI_WildcardExpandClasspath(s);
1541 /* 40 for -Denv.class.path= */
1542 if (JLI_StrLen(s) + 40 > JLI_StrLen(s)) { // Safeguard from overflow
1543 envcp = (char *)JLI_MemAlloc(JLI_StrLen(s) + 40);
1544 sprintf(envcp, "-Denv.class.path=%s", s);
1545 AddOption(envcp, NULL);
1546 }
1547 }
1548 }
1549
1550 if (!GetApplicationHome(home, sizeof(home))) {
1551 JLI_ReportErrorMessage(CFG_ERROR5);
1552 return JNI_FALSE;
1553 }
1554
1555 /* 40 for '-Dapplication.home=' */
1556 apphome = (char *)JLI_MemAlloc(JLI_StrLen(home) + 40);
1557 sprintf(apphome, "-Dapplication.home=%s", home);
1558 AddOption(apphome, NULL);
1559
1560 /* How big is the application's classpath? */
1561 size = 40; /* 40: "-Djava.class.path=" */
1562 for (i = 0; i < cpathc; i++) {
1563 size += (int)JLI_StrLen(home) + (int)JLI_StrLen(cpathv[i]) + 1; /* 1: separator */
1564 }
1565 appcp = (char *)JLI_MemAlloc(size + 1);
1566 JLI_StrCpy(appcp, "-Djava.class.path=");
1567 for (i = 0; i < cpathc; i++) {
1568 JLI_StrCat(appcp, home); /* c:\program files\myapp */
1569 JLI_StrCat(appcp, cpathv[i]); /* \lib\myapp.jar */
1570 JLI_StrCat(appcp, separator); /* ; */
1571 }
1572 appcp[JLI_StrLen(appcp)-1] = '\0'; /* remove trailing path separator */
1573 AddOption(appcp, NULL);
1574 return JNI_TRUE;
1575 }
1576
1577 /*
1578 * inject the -Dsun.java.command pseudo property into the args structure
1579 * this pseudo property is used in the HotSpot VM to expose the
1580 * Java class name and arguments to the main method to the VM. The
1581 * HotSpot VM uses this pseudo property to store the Java class name
1582 * (or jar file name) and the arguments to the class's main method
1583 * to the instrumentation memory region. The sun.java.command pseudo
1584 * property is not exported by HotSpot to the Java layer.
1585 */
1586 void
1587 SetJavaCommandLineProp(char *what, int argc, char **argv)
1588 {
1589
1590 int i = 0;
1591 size_t len = 0;
1592 char* javaCommand = NULL;
1593 char* dashDstr = "-Dsun.java.command=";
1594
1595 if (what == NULL) {
1596 /* unexpected, one of these should be set. just return without
1597 * setting the property
1598 */
1599 return;
1600 }
1601
1602 /* determine the amount of memory to allocate assuming
1603 * the individual components will be space separated
1604 */
1605 len = JLI_StrLen(what);
1606 for (i = 0; i < argc; i++) {
1607 len += JLI_StrLen(argv[i]) + 1;
1608 }
1609
1610 /* allocate the memory */
1611 javaCommand = (char*) JLI_MemAlloc(len + JLI_StrLen(dashDstr) + 1);
1612
1613 /* build the -D string */
1614 *javaCommand = '\0';
1615 JLI_StrCat(javaCommand, dashDstr);
1616 JLI_StrCat(javaCommand, what);
1617
1618 for (i = 0; i < argc; i++) {
1619 /* the components of the string are space separated. In
1620 * the case of embedded white space, the relationship of
1621 * the white space separated components to their true
1622 * positional arguments will be ambiguous. This issue may
1623 * be addressed in a future release.
1624 */
1625 JLI_StrCat(javaCommand, " ");
1626 JLI_StrCat(javaCommand, argv[i]);
1627 }
1628
1629 AddOption(javaCommand, NULL);
1630 }
1631
1632 /*
1633 * JVM would like to know if it's created by a standard Sun launcher, or by
1634 * user native application, the following property indicates the former.
1635 */
1636 void
1637 SetJavaLauncherProp() {
1638 AddOption("-Dsun.java.launcher=SUN_STANDARD", NULL);
1639 }
1640
1641 /*
1642 * Prints the version information from the java.version and other properties.
1643 */
1644 static void
1645 PrintJavaVersion(JNIEnv *env, jboolean extraLF)
1646 {
1647 jclass ver;
1648 jmethodID print;
1649
1650 NULL_CHECK(ver = FindBootStrapClass(env, "java/lang/VersionProps"));
1651 NULL_CHECK(print = (*env)->GetStaticMethodID(env,
1652 ver,
1653 (extraLF == JNI_TRUE) ? "println" : "print",
1654 "()V"
1655 )
1656 );
1657
1658 (*env)->CallStaticVoidMethod(env, ver, print);
1659 }
1660
1661 /*
1662 * Prints all the Java settings, see the java implementation for more details.
1663 */
1664 static void
1665 ShowSettings(JNIEnv *env, char *optString)
1666 {
1667 jmethodID showSettingsID;
1668 jstring joptString;
1669 jclass cls = GetLauncherHelperClass(env);
1670 NULL_CHECK(cls);
1671 NULL_CHECK(showSettingsID = (*env)->GetStaticMethodID(env, cls,
1672 "showSettings", "(ZLjava/lang/String;JJJZ)V"));
1673 NULL_CHECK(joptString = (*env)->NewStringUTF(env, optString));
1674 (*env)->CallStaticVoidMethod(env, cls, showSettingsID,
1675 USE_STDERR,
1676 joptString,
1677 (jlong)initialHeapSize,
1678 (jlong)maxHeapSize,
1679 (jlong)threadStackSize,
1680 ServerClassMachine());
1681 }
1682
1683 /**
1684 * List modules supported by the runtime
1685 */
1686 static void
1687 ListModules(JNIEnv *env, char *optString)
1688 {
1689 jmethodID listModulesID;
1690 jstring joptString;
1691 jclass cls = GetLauncherHelperClass(env);
1692 NULL_CHECK(cls);
1693 NULL_CHECK(listModulesID = (*env)->GetStaticMethodID(env, cls,
1694 "listModules", "(ZLjava/lang/String;)V"));
1695 NULL_CHECK(joptString = (*env)->NewStringUTF(env, optString));
1696 (*env)->CallStaticVoidMethod(env, cls, listModulesID,
1697 USE_STDERR,
1698 joptString);
1699 }
1700
1701 /**
1702 * Set native thread name if possible.
1703 */
1704 static void
1705 SetNativeThreadName(JNIEnv *env, char *name)
1706 {
1707 jmethodID currentThreadID, setNativeNameID;
1708 jobject currentThread;
1709 jstring nameString;
1710 jclass cls;
1711
1712 NULL_CHECK(cls = FindBootStrapClass(env, "java/lang/Thread"));
1713 NULL_CHECK(currentThreadID = (*env)->GetStaticMethodID(env, cls,
1714 "currentThread", "()Ljava/lang/Thread;"));
1715 NULL_CHECK(currentThread = (*env)->CallStaticObjectMethod(env, cls,
1716 currentThreadID));
1717 NULL_CHECK(setNativeNameID = (*env)->GetMethodID(env, cls,
1718 "setNativeName", "(Ljava/lang/String;Z)V"));
1719 NULL_CHECK(nameString = (*env)->NewStringUTF(env, name));
1720 (*env)->CallVoidMethod(env, currentThread, setNativeNameID,
1721 nameString, JNI_TRUE);
1722 }
1723
1724 /*
1725 * Prints default usage or the Xusage message, see sun.launcher.LauncherHelper.java
1726 */
1727 static void
1728 PrintUsage(JNIEnv* env, jboolean doXUsage)
1729 {
1730 jmethodID initHelp, vmSelect, vmSynonym, vmErgo, printHelp, printXUsageMessage;
1731 jstring jprogname, vm1, vm2;
1732 int i;
1733 jclass cls = GetLauncherHelperClass(env);
1734 NULL_CHECK(cls);
1735 if (doXUsage) {
1736 NULL_CHECK(printXUsageMessage = (*env)->GetStaticMethodID(env, cls,
1737 "printXUsageMessage", "(Z)V"));
1738 (*env)->CallStaticVoidMethod(env, cls, printXUsageMessage, USE_STDERR);
1739 } else {
1740 NULL_CHECK(initHelp = (*env)->GetStaticMethodID(env, cls,
1741 "initHelpMessage", "(Ljava/lang/String;)V"));
1742
1743 NULL_CHECK(vmSelect = (*env)->GetStaticMethodID(env, cls, "appendVmSelectMessage",
1744 "(Ljava/lang/String;Ljava/lang/String;)V"));
1745
1746 NULL_CHECK(vmSynonym = (*env)->GetStaticMethodID(env, cls,
1747 "appendVmSynonymMessage",
1748 "(Ljava/lang/String;Ljava/lang/String;)V"));
1749 NULL_CHECK(vmErgo = (*env)->GetStaticMethodID(env, cls,
1750 "appendVmErgoMessage", "(ZLjava/lang/String;)V"));
1751
1752 NULL_CHECK(printHelp = (*env)->GetStaticMethodID(env, cls,
1753 "printHelpMessage", "(Z)V"));
1754
1755 NULL_CHECK(jprogname = (*env)->NewStringUTF(env, _program_name));
1756
1757 /* Initialize the usage message with the usual preamble */
1758 (*env)->CallStaticVoidMethod(env, cls, initHelp, jprogname);
1759 CHECK_EXCEPTION_RETURN();
1760
1761
1762 /* Assemble the other variant part of the usage */
1763 if ((knownVMs[0].flag == VM_KNOWN) ||
1764 (knownVMs[0].flag == VM_IF_SERVER_CLASS)) {
1765 NULL_CHECK(vm1 = (*env)->NewStringUTF(env, knownVMs[0].name));
1766 NULL_CHECK(vm2 = (*env)->NewStringUTF(env, knownVMs[0].name+1));
1767 (*env)->CallStaticVoidMethod(env, cls, vmSelect, vm1, vm2);
1768 CHECK_EXCEPTION_RETURN();
1769 }
1770 for (i=1; i<knownVMsCount; i++) {
1771 if (knownVMs[i].flag == VM_KNOWN) {
1772 NULL_CHECK(vm1 = (*env)->NewStringUTF(env, knownVMs[i].name));
1773 NULL_CHECK(vm2 = (*env)->NewStringUTF(env, knownVMs[i].name+1));
1774 (*env)->CallStaticVoidMethod(env, cls, vmSelect, vm1, vm2);
1775 CHECK_EXCEPTION_RETURN();
1776 }
1777 }
1778 for (i=1; i<knownVMsCount; i++) {
1779 if (knownVMs[i].flag == VM_ALIASED_TO) {
1780 NULL_CHECK(vm1 = (*env)->NewStringUTF(env, knownVMs[i].name));
1781 NULL_CHECK(vm2 = (*env)->NewStringUTF(env, knownVMs[i].alias+1));
1782 (*env)->CallStaticVoidMethod(env, cls, vmSynonym, vm1, vm2);
1783 CHECK_EXCEPTION_RETURN();
1784 }
1785 }
1786
1787 /* The first known VM is the default */
1788 {
1789 jboolean isServerClassMachine = ServerClassMachine();
1790
1791 const char* defaultVM = knownVMs[0].name+1;
1792 if ((knownVMs[0].flag == VM_IF_SERVER_CLASS) && isServerClassMachine) {
1793 defaultVM = knownVMs[0].server_class+1;
1794 }
1795
1796 NULL_CHECK(vm1 = (*env)->NewStringUTF(env, defaultVM));
1797 (*env)->CallStaticVoidMethod(env, cls, vmErgo, isServerClassMachine, vm1);
1798 CHECK_EXCEPTION_RETURN();
1799 }
1800
1801 /* Complete the usage message and print to stderr*/
1802 (*env)->CallStaticVoidMethod(env, cls, printHelp, USE_STDERR);
1803 }
1804 return;
1805 }
1806
1807 /*
1808 * Read the jvm.cfg file and fill the knownJVMs[] array.
1809 *
1810 * The functionality of the jvm.cfg file is subject to change without
1811 * notice and the mechanism will be removed in the future.
1812 *
1813 * The lexical structure of the jvm.cfg file is as follows:
1814 *
1815 * jvmcfg := { vmLine }
1816 * vmLine := knownLine
1817 * | aliasLine
1818 * | warnLine
1819 * | ignoreLine
1820 * | errorLine
1821 * | predicateLine
1822 * | commentLine
1823 * knownLine := flag "KNOWN" EOL
1824 * warnLine := flag "WARN" EOL
1825 * ignoreLine := flag "IGNORE" EOL
1826 * errorLine := flag "ERROR" EOL
1827 * aliasLine := flag "ALIASED_TO" flag EOL
1828 * predicateLine := flag "IF_SERVER_CLASS" flag EOL
1829 * commentLine := "#" text EOL
1830 * flag := "-" identifier
1831 *
1832 * The semantics are that when someone specifies a flag on the command line:
1833 * - if the flag appears on a knownLine, then the identifier is used as
1834 * the name of the directory holding the JVM library (the name of the JVM).
1835 * - if the flag appears as the first flag on an aliasLine, the identifier
1836 * of the second flag is used as the name of the JVM.
1837 * - if the flag appears on a warnLine, the identifier is used as the
1838 * name of the JVM, but a warning is generated.
1839 * - if the flag appears on an ignoreLine, the identifier is recognized as the
1840 * name of a JVM, but the identifier is ignored and the default vm used
1841 * - if the flag appears on an errorLine, an error is generated.
1842 * - if the flag appears as the first flag on a predicateLine, and
1843 * the machine on which you are running passes the predicate indicated,
1844 * then the identifier of the second flag is used as the name of the JVM,
1845 * otherwise the identifier of the first flag is used as the name of the JVM.
1846 * If no flag is given on the command line, the first vmLine of the jvm.cfg
1847 * file determines the name of the JVM.
1848 * PredicateLines are only interpreted on first vmLine of a jvm.cfg file,
1849 * since they only make sense if someone hasn't specified the name of the
1850 * JVM on the command line.
1851 *
1852 * The intent of the jvm.cfg file is to allow several JVM libraries to
1853 * be installed in different subdirectories of a single JRE installation,
1854 * for space-savings and convenience in testing.
1855 * The intent is explicitly not to provide a full aliasing or predicate
1856 * mechanism.
1857 */
1858 jint
1859 ReadKnownVMs(const char *jvmCfgName, jboolean speculative)
1860 {
1861 FILE *jvmCfg;
1862 char line[MAXPATHLEN+20];
1863 int cnt = 0;
1864 int lineno = 0;
1865 jlong start, end;
1866 int vmType;
1867 char *tmpPtr;
1868 char *altVMName = NULL;
1869 char *serverClassVMName = NULL;
1870 static char *whiteSpace = " \t";
1871 if (JLI_IsTraceLauncher()) {
1872 start = CounterGet();
1873 }
1874
1875 jvmCfg = fopen(jvmCfgName, "r");
1876 if (jvmCfg == NULL) {
1877 if (!speculative) {
1878 JLI_ReportErrorMessage(CFG_ERROR6, jvmCfgName);
1879 exit(1);
1880 } else {
1881 return -1;
1882 }
1883 }
1884 while (fgets(line, sizeof(line), jvmCfg) != NULL) {
1885 vmType = VM_UNKNOWN;
1886 lineno++;
1887 if (line[0] == '#')
1888 continue;
1889 if (line[0] != '-') {
1890 JLI_ReportErrorMessage(CFG_WARN2, lineno, jvmCfgName);
1891 }
1892 if (cnt >= knownVMsLimit) {
1893 GrowKnownVMs(cnt);
1894 }
1895 line[JLI_StrLen(line)-1] = '\0'; /* remove trailing newline */
1896 tmpPtr = line + JLI_StrCSpn(line, whiteSpace);
1897 if (*tmpPtr == 0) {
1898 JLI_ReportErrorMessage(CFG_WARN3, lineno, jvmCfgName);
1899 } else {
1900 /* Null-terminate this string for JLI_StringDup below */
1901 *tmpPtr++ = 0;
1902 tmpPtr += JLI_StrSpn(tmpPtr, whiteSpace);
1903 if (*tmpPtr == 0) {
1904 JLI_ReportErrorMessage(CFG_WARN3, lineno, jvmCfgName);
1905 } else {
1906 if (!JLI_StrCCmp(tmpPtr, "KNOWN")) {
1907 vmType = VM_KNOWN;
1908 } else if (!JLI_StrCCmp(tmpPtr, "ALIASED_TO")) {
1909 tmpPtr += JLI_StrCSpn(tmpPtr, whiteSpace);
1910 if (*tmpPtr != 0) {
1911 tmpPtr += JLI_StrSpn(tmpPtr, whiteSpace);
1912 }
1913 if (*tmpPtr == 0) {
1914 JLI_ReportErrorMessage(CFG_WARN3, lineno, jvmCfgName);
1915 } else {
1916 /* Null terminate altVMName */
1917 altVMName = tmpPtr;
1918 tmpPtr += JLI_StrCSpn(tmpPtr, whiteSpace);
1919 *tmpPtr = 0;
1920 vmType = VM_ALIASED_TO;
1921 }
1922 } else if (!JLI_StrCCmp(tmpPtr, "WARN")) {
1923 vmType = VM_WARN;
1924 } else if (!JLI_StrCCmp(tmpPtr, "IGNORE")) {
1925 vmType = VM_IGNORE;
1926 } else if (!JLI_StrCCmp(tmpPtr, "ERROR")) {
1927 vmType = VM_ERROR;
1928 } else if (!JLI_StrCCmp(tmpPtr, "IF_SERVER_CLASS")) {
1929 tmpPtr += JLI_StrCSpn(tmpPtr, whiteSpace);
1930 if (*tmpPtr != 0) {
1931 tmpPtr += JLI_StrSpn(tmpPtr, whiteSpace);
1932 }
1933 if (*tmpPtr == 0) {
1934 JLI_ReportErrorMessage(CFG_WARN4, lineno, jvmCfgName);
1935 } else {
1936 /* Null terminate server class VM name */
1937 serverClassVMName = tmpPtr;
1938 tmpPtr += JLI_StrCSpn(tmpPtr, whiteSpace);
1939 *tmpPtr = 0;
1940 vmType = VM_IF_SERVER_CLASS;
1941 }
1942 } else {
1943 JLI_ReportErrorMessage(CFG_WARN5, lineno, &jvmCfgName[0]);
1944 vmType = VM_KNOWN;
1945 }
1946 }
1947 }
1948
1949 JLI_TraceLauncher("jvm.cfg[%d] = ->%s<-\n", cnt, line);
1950 if (vmType != VM_UNKNOWN) {
1951 knownVMs[cnt].name = JLI_StringDup(line);
1952 knownVMs[cnt].flag = vmType;
1953 switch (vmType) {
1954 default:
1955 break;
1956 case VM_ALIASED_TO:
1957 knownVMs[cnt].alias = JLI_StringDup(altVMName);
1958 JLI_TraceLauncher(" name: %s vmType: %s alias: %s\n",
1959 knownVMs[cnt].name, "VM_ALIASED_TO", knownVMs[cnt].alias);
1960 break;
1961 case VM_IF_SERVER_CLASS:
1962 knownVMs[cnt].server_class = JLI_StringDup(serverClassVMName);
1963 JLI_TraceLauncher(" name: %s vmType: %s server_class: %s\n",
1964 knownVMs[cnt].name, "VM_IF_SERVER_CLASS", knownVMs[cnt].server_class);
1965 break;
1966 }
1967 cnt++;
1968 }
1969 }
1970 fclose(jvmCfg);
1971 knownVMsCount = cnt;
1972
1973 if (JLI_IsTraceLauncher()) {
1974 end = CounterGet();
1975 printf("%ld micro seconds to parse jvm.cfg\n",
1976 (long)(jint)Counter2Micros(end-start));
1977 }
1978
1979 return cnt;
1980 }
1981
1982
1983 static void
1984 GrowKnownVMs(int minimum)
1985 {
1986 struct vmdesc* newKnownVMs;
1987 int newMax;
1988
1989 newMax = (knownVMsLimit == 0 ? INIT_MAX_KNOWN_VMS : (2 * knownVMsLimit));
1990 if (newMax <= minimum) {
1991 newMax = minimum;
1992 }
1993 newKnownVMs = (struct vmdesc*) JLI_MemAlloc(newMax * sizeof(struct vmdesc));
1994 if (knownVMs != NULL) {
1995 memcpy(newKnownVMs, knownVMs, knownVMsLimit * sizeof(struct vmdesc));
1996 }
1997 JLI_MemFree(knownVMs);
1998 knownVMs = newKnownVMs;
1999 knownVMsLimit = newMax;
2000 }
2001
2002
2003 /* Returns index of VM or -1 if not found */
2004 static int
2005 KnownVMIndex(const char* name)
2006 {
2007 int i;
2008 if (JLI_StrCCmp(name, "-J") == 0) name += 2;
2009 for (i = 0; i < knownVMsCount; i++) {
2010 if (!JLI_StrCmp(name, knownVMs[i].name)) {
2011 return i;
2012 }
2013 }
2014 return -1;
2015 }
2016
2017 static void
2018 FreeKnownVMs()
2019 {
2020 int i;
2021 for (i = 0; i < knownVMsCount; i++) {
2022 JLI_MemFree(knownVMs[i].name);
2023 knownVMs[i].name = NULL;
2024 }
2025 JLI_MemFree(knownVMs);
2026 }
2027
2028 /*
2029 * Displays the splash screen according to the jar file name
2030 * and image file names stored in environment variables
2031 */
2032 void
2033 ShowSplashScreen()
2034 {
2035 const char *jar_name = getenv(SPLASH_JAR_ENV_ENTRY);
2036 const char *file_name = getenv(SPLASH_FILE_ENV_ENTRY);
2037 int data_size;
2038 void *image_data = NULL;
2039 float scale_factor = 1;
2040 char *scaled_splash_name = NULL;
2041 jboolean isImageScaled = JNI_FALSE;
2042 size_t maxScaledImgNameLength = 0;
2043 if (file_name == NULL){
2044 return;
2045 }
2046 maxScaledImgNameLength = DoSplashGetScaledImgNameMaxPstfixLen(file_name);
2047
2048 scaled_splash_name = JLI_MemAlloc(
2049 maxScaledImgNameLength * sizeof(char));
2050 isImageScaled = DoSplashGetScaledImageName(jar_name, file_name,
2051 &scale_factor,
2052 scaled_splash_name, maxScaledImgNameLength);
2053 if (jar_name) {
2054
2055 if (isImageScaled) {
2056 image_data = JLI_JarUnpackFile(
2057 jar_name, scaled_splash_name, &data_size);
2058 }
2059
2060 if (!image_data) {
2061 scale_factor = 1;
2062 image_data = JLI_JarUnpackFile(
2063 jar_name, file_name, &data_size);
2064 }
2065 if (image_data) {
2066 DoSplashInit();
2067 DoSplashSetScaleFactor(scale_factor);
2068 DoSplashLoadMemory(image_data, data_size);
2069 JLI_MemFree(image_data);
2070 }
2071 } else {
2072 DoSplashInit();
2073 if (isImageScaled) {
2074 DoSplashSetScaleFactor(scale_factor);
2075 DoSplashLoadFile(scaled_splash_name);
2076 } else {
2077 DoSplashLoadFile(file_name);
2078 }
2079 }
2080 JLI_MemFree(scaled_splash_name);
2081
2082 DoSplashSetFileJarName(file_name, jar_name);
2083
2084 /*
2085 * Done with all command line processing and potential re-execs so
2086 * clean up the environment.
2087 */
2088 (void)UnsetEnv(ENV_ENTRY);
2089 (void)UnsetEnv(SPLASH_FILE_ENV_ENTRY);
2090 (void)UnsetEnv(SPLASH_JAR_ENV_ENTRY);
2091
2092 JLI_MemFree(splash_jar_entry);
2093 JLI_MemFree(splash_file_entry);
2094
2095 }
2096
2097 const char*
2098 GetFullVersion()
2099 {
2100 return _fVersion;
2101 }
2102
2103 const char*
2104 GetProgramName()
2105 {
2106 return _program_name;
2107 }
2108
2109 const char*
2110 GetLauncherName()
2111 {
2112 return _launcher_name;
2113 }
2114
2115 jint
2116 GetErgoPolicy()
2117 {
2118 return _ergo_policy;
2119 }
2120
2121 jboolean
2122 IsJavaArgs()
2123 {
2124 return _is_java_args;
2125 }
2126
2127 static jboolean
2128 IsWildCardEnabled()
2129 {
2130 return _wc_enabled;
2131 }
2132
2133 int
2134 ContinueInNewThread(InvocationFunctions* ifn, jlong threadStackSize,
2135 int argc, char **argv,
2136 int mode, char *what, int ret)
2137 {
2138
2139 /*
2140 * If user doesn't specify stack size, check if VM has a preference.
2141 * Note that HotSpot no longer supports JNI_VERSION_1_1 but it will
2142 * return its default stack size through the init args structure.
2143 */
2144 if (threadStackSize == 0) {
2145 struct JDK1_1InitArgs args1_1;
2146 memset((void*)&args1_1, 0, sizeof(args1_1));
2147 args1_1.version = JNI_VERSION_1_1;
2148 ifn->GetDefaultJavaVMInitArgs(&args1_1); /* ignore return value */
2149 if (args1_1.javaStackSize > 0) {
2150 threadStackSize = args1_1.javaStackSize;
2151 }
2152 }
2153
2154 { /* Create a new thread to create JVM and invoke main method */
2155 JavaMainArgs args;
2156 int rslt;
2157
2158 args.argc = argc;
2159 args.argv = argv;
2160 args.mode = mode;
2161 args.what = what;
2162 args.ifn = *ifn;
2163
2164 rslt = ContinueInNewThread0(JavaMain, threadStackSize, (void*)&args);
2165 /* If the caller has deemed there is an error we
2166 * simply return that, otherwise we return the value of
2167 * the callee
2168 */
2169 return (ret != 0) ? ret : rslt;
2170 }
2171 }
2172
2173 static void
2174 DumpState()
2175 {
2176 if (!JLI_IsTraceLauncher()) return ;
2177 printf("Launcher state:\n");
2178 printf("\tFirst application arg index: %d\n", JLI_GetAppArgIndex());
2179 printf("\tdebug:%s\n", (JLI_IsTraceLauncher() == JNI_TRUE) ? "on" : "off");
2180 printf("\tjavargs:%s\n", (_is_java_args == JNI_TRUE) ? "on" : "off");
2181 printf("\tprogram name:%s\n", GetProgramName());
2182 printf("\tlauncher name:%s\n", GetLauncherName());
2183 printf("\tjavaw:%s\n", (IsJavaw() == JNI_TRUE) ? "on" : "off");
2184 printf("\tfullversion:%s\n", GetFullVersion());
2185 printf("\tergo_policy:");
2186 switch(GetErgoPolicy()) {
2187 case NEVER_SERVER_CLASS:
2188 printf("NEVER_ACT_AS_A_SERVER_CLASS_MACHINE\n");
2189 break;
2190 case ALWAYS_SERVER_CLASS:
2191 printf("ALWAYS_ACT_AS_A_SERVER_CLASS_MACHINE\n");
2192 break;
2193 default:
2194 printf("DEFAULT_ERGONOMICS_POLICY\n");
2195 }
2196 }
2197
2198 /*
2199 * Return JNI_TRUE for an option string that has no effect but should
2200 * _not_ be passed on to the vm; return JNI_FALSE otherwise. On
2201 * Solaris SPARC, this screening needs to be done if:
2202 * -d32 or -d64 is passed to a binary with an unmatched data model
2203 * (the exec in CreateExecutionEnvironment removes -d<n> options and points the
2204 * exec to the proper binary). In the case of when the data model and the
2205 * requested version is matched, an exec would not occur, and these options
2206 * were erroneously passed to the vm.
2207 */
2208 jboolean
2209 RemovableOption(char * option)
2210 {
2211 /*
2212 * Unconditionally remove both -d32 and -d64 options since only
2213 * the last such options has an effect; e.g.
2214 * java -d32 -d64 -d32 -version
2215 * is equivalent to
2216 * java -d32 -version
2217 */
2218
2219 if( (JLI_StrCCmp(option, "-d32") == 0 ) ||
2220 (JLI_StrCCmp(option, "-d64") == 0 ) )
2221 return JNI_TRUE;
2222 else
2223 return JNI_FALSE;
2224 }
2225
2226 /*
2227 * A utility procedure to always print to stderr
2228 */
2229 void
2230 JLI_ReportMessage(const char* fmt, ...)
2231 {
2232 va_list vl;
2233 va_start(vl, fmt);
2234 vfprintf(stderr, fmt, vl);
2235 fprintf(stderr, "\n");
2236 va_end(vl);
2237 }