java.c revision 16598:397d1eb78030
1/* 2 * Copyright (c) 1995, 2016, 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#define USE_STDERR JNI_TRUE /* we usually print to stderr */ 65#define USE_STDOUT JNI_FALSE 66 67static jboolean printVersion = JNI_FALSE; /* print and exit */ 68static jboolean showVersion = JNI_FALSE; /* print but continue */ 69static jboolean printUsage = JNI_FALSE; /* print and exit*/ 70static jboolean printTo = USE_STDERR; /* where to print version/usage */ 71static jboolean printXUsage = JNI_FALSE; /* print and exit*/ 72static jboolean dryRun = JNI_FALSE; /* initialize VM and exit */ 73static char *showSettings = NULL; /* print but continue */ 74static char *listModules = NULL; 75 76static const char *_program_name; 77static const char *_launcher_name; 78static jboolean _is_java_args = JNI_FALSE; 79static jboolean _have_classpath = JNI_FALSE; 80static const char *_fVersion; 81static jboolean _wc_enabled = JNI_FALSE; 82 83/* 84 * Entries for splash screen environment variables. 85 * putenv is performed in SelectVersion. We need 86 * them in memory until UnsetEnv, so they are made static 87 * global instead of auto local. 88 */ 89static char* splash_file_entry = NULL; 90static char* splash_jar_entry = NULL; 91 92/* 93 * List of VM options to be specified when the VM is created. 94 */ 95static JavaVMOption *options; 96static int numOptions, maxOptions; 97 98/* 99 * Prototypes for functions internal to launcher. 100 */ 101static void SetClassPath(const char *s); 102static void SetMainModule(const char *s); 103static void SelectVersion(int argc, char **argv, char **main_class); 104static void SetJvmEnvironment(int argc, char **argv); 105static jboolean ParseArguments(int *pargc, char ***pargv, 106 int *pmode, char **pwhat, 107 int *pret, const char *jrepath); 108static jboolean InitializeJVM(JavaVM **pvm, JNIEnv **penv, 109 InvocationFunctions *ifn); 110static jstring NewPlatformString(JNIEnv *env, char *s); 111static jclass LoadMainClass(JNIEnv *env, int mode, char *name); 112static jclass GetApplicationClass(JNIEnv *env); 113 114static void TranslateApplicationArgs(int jargc, const char **jargv, int *pargc, char ***pargv); 115static jboolean AddApplicationOptions(int cpathc, const char **cpathv); 116static void SetApplicationClassPath(const char**); 117 118static void PrintJavaVersion(JNIEnv *env, jboolean extraLF); 119static void PrintUsage(JNIEnv* env, jboolean doXUsage); 120static void ShowSettings(JNIEnv* env, char *optString); 121static void ListModules(JNIEnv* env, char *optString); 122 123static void SetPaths(int argc, char **argv); 124 125static void DumpState(); 126static jboolean RemovableOption(char *option); 127 128enum OptionKind { 129 LAUNCHER_OPTION = 0, 130 LAUNCHER_OPTION_WITH_ARGUMENT, 131 LAUNCHER_MAIN_OPTION, 132 VM_LONG_OPTION, 133 VM_LONG_OPTION_WITH_ARGUMENT, 134 VM_OPTION 135}; 136 137static int GetOpt(int *pargc, char ***pargv, char **poption, char **pvalue); 138static jboolean IsOptionWithArgument(int argc, char **argv); 139 140/* Maximum supported entries from jvm.cfg. */ 141#define INIT_MAX_KNOWN_VMS 10 142 143/* Values for vmdesc.flag */ 144enum vmdesc_flag { 145 VM_UNKNOWN = -1, 146 VM_KNOWN, 147 VM_ALIASED_TO, 148 VM_WARN, 149 VM_ERROR, 150 VM_IF_SERVER_CLASS, 151 VM_IGNORE 152}; 153 154struct vmdesc { 155 char *name; 156 int flag; 157 char *alias; 158 char *server_class; 159}; 160static struct vmdesc *knownVMs = NULL; 161static int knownVMsCount = 0; 162static int knownVMsLimit = 0; 163 164static void GrowKnownVMs(int minimum); 165static int KnownVMIndex(const char* name); 166static void FreeKnownVMs(); 167static jboolean IsWildCardEnabled(); 168 169/* 170 * This reports error. VM will not be created and no usage is printed. 171 */ 172#define REPORT_ERROR(AC_ok, AC_failure_message, AC_questionable_arg) \ 173 do { \ 174 if (!AC_ok) { \ 175 JLI_ReportErrorMessage(AC_failure_message, AC_questionable_arg); \ 176 printUsage = JNI_FALSE; \ 177 *pret = 1; \ 178 return JNI_FALSE; \ 179 } \ 180 } while (JNI_FALSE) 181 182#define ARG_CHECK(AC_arg_count, AC_failure_message, AC_questionable_arg) \ 183 do { \ 184 if (AC_arg_count < 1) { \ 185 JLI_ReportErrorMessage(AC_failure_message, AC_questionable_arg); \ 186 printUsage = JNI_TRUE; \ 187 *pret = 1; \ 188 return JNI_TRUE; \ 189 } \ 190 } while (JNI_FALSE) 191 192/* 193 * Running Java code in primordial thread caused many problems. We will 194 * create a new thread to invoke JVM. See 6316197 for more information. 195 */ 196static jlong threadStackSize = 0; /* stack size of the new thread */ 197static jlong maxHeapSize = 0; /* max heap size */ 198static jlong initialHeapSize = 0; /* inital heap size */ 199 200/* 201 * A minimum -Xss stack size suitable for all platforms. 202 */ 203#ifndef STACK_SIZE_MINIMUM 204#define STACK_SIZE_MINIMUM (32 * KB) 205#endif 206 207/* 208 * Entry point. 209 */ 210int 211JLI_Launch(int argc, char ** argv, /* main argc, argc */ 212 int jargc, const char** jargv, /* java args */ 213 int appclassc, const char** appclassv, /* app classpath */ 214 const char* fullversion, /* full version defined */ 215 const char* dotversion, /* UNUSED dot version defined */ 216 const char* pname, /* program name */ 217 const char* lname, /* launcher name */ 218 jboolean javaargs, /* JAVA_ARGS */ 219 jboolean cpwildcard, /* classpath wildcard*/ 220 jboolean javaw, /* windows-only javaw */ 221 jint ergo /* unused */ 222) 223{ 224 int mode = LM_UNKNOWN; 225 char *what = NULL; 226 char *main_class = NULL; 227 int ret; 228 InvocationFunctions ifn; 229 jlong start, end; 230 char jvmpath[MAXPATHLEN]; 231 char jrepath[MAXPATHLEN]; 232 char jvmcfg[MAXPATHLEN]; 233 234 _fVersion = fullversion; 235 _launcher_name = lname; 236 _program_name = pname; 237 _is_java_args = javaargs; 238 _wc_enabled = cpwildcard; 239 240 InitLauncher(javaw); 241 DumpState(); 242 if (JLI_IsTraceLauncher()) { 243 int i; 244 printf("Command line args:\n"); 245 for (i = 0; i < argc ; i++) { 246 printf("argv[%d] = %s\n", i, argv[i]); 247 } 248 AddOption("-Dsun.java.launcher.diag=true", NULL); 249 } 250 251 /* 252 * SelectVersion() has several responsibilities: 253 * 254 * 1) Disallow specification of another JRE. With 1.9, another 255 * version of the JRE cannot be invoked. 256 * 2) Allow for a JRE version to invoke JDK 1.9 or later. Since 257 * all mJRE directives have been stripped from the request but 258 * the pre 1.9 JRE [ 1.6 thru 1.8 ], it is as if 1.9+ has been 259 * invoked from the command line. 260 */ 261 SelectVersion(argc, argv, &main_class); 262 263 CreateExecutionEnvironment(&argc, &argv, 264 jrepath, sizeof(jrepath), 265 jvmpath, sizeof(jvmpath), 266 jvmcfg, sizeof(jvmcfg)); 267 268 if (!IsJavaArgs()) { 269 SetJvmEnvironment(argc,argv); 270 } 271 272 ifn.CreateJavaVM = 0; 273 ifn.GetDefaultJavaVMInitArgs = 0; 274 275 if (JLI_IsTraceLauncher()) { 276 start = CounterGet(); 277 } 278 279 if (!LoadJavaVM(jvmpath, &ifn)) { 280 return(6); 281 } 282 283 if (JLI_IsTraceLauncher()) { 284 end = CounterGet(); 285 } 286 287 JLI_TraceLauncher("%ld micro seconds to LoadJavaVM\n", 288 (long)(jint)Counter2Micros(end-start)); 289 290 ++argv; 291 --argc; 292 293 if (IsJavaArgs()) { 294 /* Preprocess wrapper arguments */ 295 TranslateApplicationArgs(jargc, jargv, &argc, &argv); 296 if (!AddApplicationOptions(appclassc, appclassv)) { 297 return(1); 298 } 299 } else { 300 /* Set default CLASSPATH */ 301 char* cpath = getenv("CLASSPATH"); 302 if (cpath != NULL) { 303 SetClassPath(cpath); 304 } 305 } 306 307 /* Parse command line options; if the return value of 308 * ParseArguments is false, the program should exit. 309 */ 310 if (!ParseArguments(&argc, &argv, &mode, &what, &ret, jrepath)) 311 { 312 return(ret); 313 } 314 315 /* Override class path if -jar flag was specified */ 316 if (mode == LM_JAR) { 317 SetClassPath(what); /* Override class path */ 318 } 319 320 /* set the -Dsun.java.command pseudo property */ 321 SetJavaCommandLineProp(what, argc, argv); 322 323 /* Set the -Dsun.java.launcher pseudo property */ 324 SetJavaLauncherProp(); 325 326 /* set the -Dsun.java.launcher.* platform properties */ 327 SetJavaLauncherPlatformProps(); 328 329 return JVMInit(&ifn, threadStackSize, argc, argv, mode, what, ret); 330} 331/* 332 * Always detach the main thread so that it appears to have ended when 333 * the application's main method exits. This will invoke the 334 * uncaught exception handler machinery if main threw an 335 * exception. An uncaught exception handler cannot change the 336 * launcher's return code except by calling System.exit. 337 * 338 * Wait for all non-daemon threads to end, then destroy the VM. 339 * This will actually create a trivial new Java waiter thread 340 * named "DestroyJavaVM", but this will be seen as a different 341 * thread from the one that executed main, even though they are 342 * the same C thread. This allows mainThread.join() and 343 * mainThread.isAlive() to work as expected. 344 */ 345#define LEAVE() \ 346 do { \ 347 if ((*vm)->DetachCurrentThread(vm) != JNI_OK) { \ 348 JLI_ReportErrorMessage(JVM_ERROR2); \ 349 ret = 1; \ 350 } \ 351 if (JNI_TRUE) { \ 352 (*vm)->DestroyJavaVM(vm); \ 353 return ret; \ 354 } \ 355 } while (JNI_FALSE) 356 357#define CHECK_EXCEPTION_NULL_LEAVE(CENL_exception) \ 358 do { \ 359 if ((*env)->ExceptionOccurred(env)) { \ 360 JLI_ReportExceptionDescription(env); \ 361 LEAVE(); \ 362 } \ 363 if ((CENL_exception) == NULL) { \ 364 JLI_ReportErrorMessage(JNI_ERROR); \ 365 LEAVE(); \ 366 } \ 367 } while (JNI_FALSE) 368 369#define CHECK_EXCEPTION_LEAVE(CEL_return_value) \ 370 do { \ 371 if ((*env)->ExceptionOccurred(env)) { \ 372 JLI_ReportExceptionDescription(env); \ 373 ret = (CEL_return_value); \ 374 LEAVE(); \ 375 } \ 376 } while (JNI_FALSE) 377 378 379int JNICALL 380JavaMain(void * _args) 381{ 382 JavaMainArgs *args = (JavaMainArgs *)_args; 383 int argc = args->argc; 384 char **argv = args->argv; 385 int mode = args->mode; 386 char *what = args->what; 387 InvocationFunctions ifn = args->ifn; 388 389 JavaVM *vm = 0; 390 JNIEnv *env = 0; 391 jclass mainClass = NULL; 392 jclass appClass = NULL; // actual application class being launched 393 jmethodID mainID; 394 jobjectArray mainArgs; 395 int ret = 0; 396 jlong start, end; 397 398 RegisterThread(); 399 400 /* Initialize the virtual machine */ 401 start = CounterGet(); 402 if (!InitializeJVM(&vm, &env, &ifn)) { 403 JLI_ReportErrorMessage(JVM_ERROR1); 404 exit(1); 405 } 406 407 if (showSettings != NULL) { 408 ShowSettings(env, showSettings); 409 CHECK_EXCEPTION_LEAVE(1); 410 } 411 412 if (listModules != NULL) { 413 ListModules(env, listModules); 414 CHECK_EXCEPTION_LEAVE(1); 415 LEAVE(); 416 } 417 418 if (printVersion || showVersion) { 419 PrintJavaVersion(env, showVersion); 420 CHECK_EXCEPTION_LEAVE(0); 421 if (printVersion) { 422 LEAVE(); 423 } 424 } 425 426 /* If the user specified neither a class name nor a JAR file */ 427 if (printXUsage || printUsage || what == 0 || mode == LM_UNKNOWN) { 428 PrintUsage(env, printXUsage); 429 CHECK_EXCEPTION_LEAVE(1); 430 LEAVE(); 431 } 432 433 FreeKnownVMs(); /* after last possible PrintUsage */ 434 435 if (JLI_IsTraceLauncher()) { 436 end = CounterGet(); 437 JLI_TraceLauncher("%ld micro seconds to InitializeJVM\n", 438 (long)(jint)Counter2Micros(end-start)); 439 } 440 441 /* At this stage, argc/argv have the application's arguments */ 442 if (JLI_IsTraceLauncher()){ 443 int i; 444 printf("%s is '%s'\n", launchModeNames[mode], what); 445 printf("App's argc is %d\n", argc); 446 for (i=0; i < argc; i++) { 447 printf(" argv[%2d] = '%s'\n", i, argv[i]); 448 } 449 } 450 451 ret = 1; 452 453 /* 454 * Get the application's main class. It also checks if the main 455 * method exists. 456 * 457 * See bugid 5030265. The Main-Class name has already been parsed 458 * from the manifest, but not parsed properly for UTF-8 support. 459 * Hence the code here ignores the value previously extracted and 460 * uses the pre-existing code to reextract the value. This is 461 * possibly an end of release cycle expedient. However, it has 462 * also been discovered that passing some character sets through 463 * the environment has "strange" behavior on some variants of 464 * Windows. Hence, maybe the manifest parsing code local to the 465 * launcher should never be enhanced. 466 * 467 * Hence, future work should either: 468 * 1) Correct the local parsing code and verify that the 469 * Main-Class attribute gets properly passed through 470 * all environments, 471 * 2) Remove the vestages of maintaining main_class through 472 * the environment (and remove these comments). 473 * 474 * This method also correctly handles launching existing JavaFX 475 * applications that may or may not have a Main-Class manifest entry. 476 */ 477 mainClass = LoadMainClass(env, mode, what); 478 CHECK_EXCEPTION_NULL_LEAVE(mainClass); 479 /* 480 * In some cases when launching an application that needs a helper, e.g., a 481 * JavaFX application with no main method, the mainClass will not be the 482 * applications own main class but rather a helper class. To keep things 483 * consistent in the UI we need to track and report the application main class. 484 */ 485 appClass = GetApplicationClass(env); 486 NULL_CHECK_RETURN_VALUE(appClass, -1); 487 488 /* Build platform specific argument array */ 489 mainArgs = CreateApplicationArgs(env, argv, argc); 490 CHECK_EXCEPTION_NULL_LEAVE(mainArgs); 491 492 if (dryRun) { 493 ret = 0; 494 LEAVE(); 495 } 496 497 /* 498 * PostJVMInit uses the class name as the application name for GUI purposes, 499 * for example, on OSX this sets the application name in the menu bar for 500 * both SWT and JavaFX. So we'll pass the actual application class here 501 * instead of mainClass as that may be a launcher or helper class instead 502 * of the application class. 503 */ 504 PostJVMInit(env, appClass, vm); 505 CHECK_EXCEPTION_LEAVE(1); 506 507 /* 508 * The LoadMainClass not only loads the main class, it will also ensure 509 * that the main method's signature is correct, therefore further checking 510 * is not required. The main method is invoked here so that extraneous java 511 * stacks are not in the application stack trace. 512 */ 513 mainID = (*env)->GetStaticMethodID(env, mainClass, "main", 514 "([Ljava/lang/String;)V"); 515 CHECK_EXCEPTION_NULL_LEAVE(mainID); 516 517 /* Invoke main method. */ 518 (*env)->CallStaticVoidMethod(env, mainClass, mainID, mainArgs); 519 520 /* 521 * The launcher's exit code (in the absence of calls to 522 * System.exit) will be non-zero if main threw an exception. 523 */ 524 ret = (*env)->ExceptionOccurred(env) == NULL ? 0 : 1; 525 526 LEAVE(); 527} 528 529/* 530 * Test if the given name is one of the class path options. 531 */ 532static jboolean 533IsClassPathOption(const char* name) { 534 return JLI_StrCmp(name, "-classpath") == 0 || 535 JLI_StrCmp(name, "-cp") == 0 || 536 JLI_StrCmp(name, "--class-path") == 0; 537} 538 539/* 540 * Test if the given name is a launcher option taking the main entry point. 541 */ 542static jboolean 543IsLauncherMainOption(const char* name) { 544 return JLI_StrCmp(name, "--module") == 0 || 545 JLI_StrCmp(name, "-m") == 0; 546} 547 548/* 549 * Test if the given name is a white-space launcher option. 550 */ 551static jboolean 552IsLauncherOption(const char* name) { 553 return IsClassPathOption(name) || 554 IsLauncherMainOption(name) || 555 JLI_StrCmp(name, "--list-modules") == 0; 556} 557 558/* 559 * Test if the given name is a module-system white-space option that 560 * will be passed to the VM with its corresponding long-form option 561 * name and "=" delimiter. 562 */ 563static jboolean 564IsModuleOption(const char* name) { 565 return JLI_StrCmp(name, "--module-path") == 0 || 566 JLI_StrCmp(name, "-p") == 0 || 567 JLI_StrCmp(name, "--upgrade-module-path") == 0 || 568 JLI_StrCmp(name, "--add-modules") == 0 || 569 JLI_StrCmp(name, "--limit-modules") == 0 || 570 JLI_StrCmp(name, "--add-exports") == 0 || 571 JLI_StrCmp(name, "--add-opens") == 0 || 572 JLI_StrCmp(name, "--add-reads") == 0 || 573 JLI_StrCmp(name, "--patch-module") == 0; 574} 575 576static jboolean 577IsLongFormModuleOption(const char* name) { 578 return JLI_StrCCmp(name, "--module-path=") == 0 || 579 JLI_StrCCmp(name, "--upgrade-module-path=") == 0 || 580 JLI_StrCCmp(name, "--add-modules=") == 0 || 581 JLI_StrCCmp(name, "--limit-modules=") == 0 || 582 JLI_StrCCmp(name, "--add-exports=") == 0 || 583 JLI_StrCCmp(name, "--add-reads=") == 0 || 584 JLI_StrCCmp(name, "--patch-module=") == 0; 585} 586 587/* 588 * Test if the given name has a white space option. 589 */ 590jboolean 591IsWhiteSpaceOption(const char* name) { 592 return IsModuleOption(name) || 593 IsLauncherOption(name); 594} 595 596/* 597 * Checks the command line options to find which JVM type was 598 * specified. If no command line option was given for the JVM type, 599 * the default type is used. The environment variable 600 * JDK_ALTERNATE_VM and the command line option -XXaltjvm= are also 601 * checked as ways of specifying which JVM type to invoke. 602 */ 603char * 604CheckJvmType(int *pargc, char ***argv, jboolean speculative) { 605 int i, argi; 606 int argc; 607 char **newArgv; 608 int newArgvIdx = 0; 609 int isVMType; 610 int jvmidx = -1; 611 char *jvmtype = getenv("JDK_ALTERNATE_VM"); 612 613 argc = *pargc; 614 615 /* To make things simpler we always copy the argv array */ 616 newArgv = JLI_MemAlloc((argc + 1) * sizeof(char *)); 617 618 /* The program name is always present */ 619 newArgv[newArgvIdx++] = (*argv)[0]; 620 621 for (argi = 1; argi < argc; argi++) { 622 char *arg = (*argv)[argi]; 623 isVMType = 0; 624 625 if (IsJavaArgs()) { 626 if (arg[0] != '-') { 627 newArgv[newArgvIdx++] = arg; 628 continue; 629 } 630 } else { 631 if (IsWhiteSpaceOption(arg)) { 632 newArgv[newArgvIdx++] = arg; 633 argi++; 634 if (argi < argc) { 635 newArgv[newArgvIdx++] = (*argv)[argi]; 636 } 637 continue; 638 } 639 if (arg[0] != '-') break; 640 } 641 642 /* Did the user pass an explicit VM type? */ 643 i = KnownVMIndex(arg); 644 if (i >= 0) { 645 jvmtype = knownVMs[jvmidx = i].name + 1; /* skip the - */ 646 isVMType = 1; 647 *pargc = *pargc - 1; 648 } 649 650 /* Did the user specify an "alternate" VM? */ 651 else if (JLI_StrCCmp(arg, "-XXaltjvm=") == 0 || JLI_StrCCmp(arg, "-J-XXaltjvm=") == 0) { 652 isVMType = 1; 653 jvmtype = arg+((arg[1]=='X')? 10 : 12); 654 jvmidx = -1; 655 } 656 657 if (!isVMType) { 658 newArgv[newArgvIdx++] = arg; 659 } 660 } 661 662 /* 663 * Finish copying the arguments if we aborted the above loop. 664 * NOTE that if we aborted via "break" then we did NOT copy the 665 * last argument above, and in addition argi will be less than 666 * argc. 667 */ 668 while (argi < argc) { 669 newArgv[newArgvIdx++] = (*argv)[argi]; 670 argi++; 671 } 672 673 /* argv is null-terminated */ 674 newArgv[newArgvIdx] = 0; 675 676 /* Copy back argv */ 677 *argv = newArgv; 678 *pargc = newArgvIdx; 679 680 /* use the default VM type if not specified (no alias processing) */ 681 if (jvmtype == NULL) { 682 char* result = knownVMs[0].name+1; 683 JLI_TraceLauncher("Default VM: %s\n", result); 684 return result; 685 } 686 687 /* if using an alternate VM, no alias processing */ 688 if (jvmidx < 0) 689 return jvmtype; 690 691 /* Resolve aliases first */ 692 { 693 int loopCount = 0; 694 while (knownVMs[jvmidx].flag == VM_ALIASED_TO) { 695 int nextIdx = KnownVMIndex(knownVMs[jvmidx].alias); 696 697 if (loopCount > knownVMsCount) { 698 if (!speculative) { 699 JLI_ReportErrorMessage(CFG_ERROR1); 700 exit(1); 701 } else { 702 return "ERROR"; 703 /* break; */ 704 } 705 } 706 707 if (nextIdx < 0) { 708 if (!speculative) { 709 JLI_ReportErrorMessage(CFG_ERROR2, knownVMs[jvmidx].alias); 710 exit(1); 711 } else { 712 return "ERROR"; 713 } 714 } 715 jvmidx = nextIdx; 716 jvmtype = knownVMs[jvmidx].name+1; 717 loopCount++; 718 } 719 } 720 721 switch (knownVMs[jvmidx].flag) { 722 case VM_WARN: 723 if (!speculative) { 724 JLI_ReportErrorMessage(CFG_WARN1, jvmtype, knownVMs[0].name + 1); 725 } 726 /* fall through */ 727 case VM_IGNORE: 728 jvmtype = knownVMs[jvmidx=0].name + 1; 729 /* fall through */ 730 case VM_KNOWN: 731 break; 732 case VM_ERROR: 733 if (!speculative) { 734 JLI_ReportErrorMessage(CFG_ERROR3, jvmtype); 735 exit(1); 736 } else { 737 return "ERROR"; 738 } 739 } 740 741 return jvmtype; 742} 743 744/* 745 * static void SetJvmEnvironment(int argc, char **argv); 746 * Is called just before the JVM is loaded. We can set env variables 747 * that are consumed by the JVM. This function is non-destructive, 748 * leaving the arg list intact. The first use is for the JVM flag 749 * -XX:NativeMemoryTracking=value. 750 */ 751static void 752SetJvmEnvironment(int argc, char **argv) { 753 754 static const char* NMT_Env_Name = "NMT_LEVEL_"; 755 int i; 756 for (i = 0; i < argc; i++) { 757 char *arg = argv[i]; 758 /* 759 * Since this must be a VM flag we stop processing once we see 760 * an argument the launcher would not have processed beyond (such 761 * as -version or -h), or an argument that indicates the following 762 * arguments are for the application (i.e. the main class name, or 763 * the -jar argument). 764 */ 765 if (i > 0) { 766 char *prev = argv[i - 1]; 767 // skip non-dash arg preceded by class path specifiers 768 if (*arg != '-' && IsWhiteSpaceOption(prev)) { 769 continue; 770 } 771 772 if (*arg != '-' || isTerminalOpt(arg)) { 773 return; 774 } 775 } 776 /* 777 * The following case checks for "-XX:NativeMemoryTracking=value". 778 * If value is non null, an environmental variable set to this value 779 * will be created to be used by the JVM. 780 * The argument is passed to the JVM, which will check validity. 781 * The JVM is responsible for removing the env variable. 782 */ 783 if (JLI_StrCCmp(arg, "-XX:NativeMemoryTracking=") == 0) { 784 int retval; 785 // get what follows this parameter, include "=" 786 size_t pnlen = JLI_StrLen("-XX:NativeMemoryTracking="); 787 if (JLI_StrLen(arg) > pnlen) { 788 char* value = arg + pnlen; 789 size_t pbuflen = pnlen + JLI_StrLen(value) + 10; // 10 max pid digits 790 791 /* 792 * ensures that malloc successful 793 * DONT JLI_MemFree() pbuf. JLI_PutEnv() uses system call 794 * that could store the address. 795 */ 796 char * pbuf = (char*)JLI_MemAlloc(pbuflen); 797 798 JLI_Snprintf(pbuf, pbuflen, "%s%d=%s", NMT_Env_Name, JLI_GetPid(), value); 799 retval = JLI_PutEnv(pbuf); 800 if (JLI_IsTraceLauncher()) { 801 char* envName; 802 char* envBuf; 803 804 // ensures that malloc successful 805 envName = (char*)JLI_MemAlloc(pbuflen); 806 JLI_Snprintf(envName, pbuflen, "%s%d", NMT_Env_Name, JLI_GetPid()); 807 808 printf("TRACER_MARKER: NativeMemoryTracking: env var is %s\n",envName); 809 printf("TRACER_MARKER: NativeMemoryTracking: putenv arg %s\n",pbuf); 810 envBuf = getenv(envName); 811 printf("TRACER_MARKER: NativeMemoryTracking: got value %s\n",envBuf); 812 free(envName); 813 } 814 815 } 816 817 } 818 819 } 820} 821 822/* copied from HotSpot function "atomll()" */ 823static int 824parse_size(const char *s, jlong *result) { 825 jlong n = 0; 826 int args_read = sscanf(s, JLONG_FORMAT_SPECIFIER, &n); 827 if (args_read != 1) { 828 return 0; 829 } 830 while (*s != '\0' && *s >= '0' && *s <= '9') { 831 s++; 832 } 833 // 4705540: illegal if more characters are found after the first non-digit 834 if (JLI_StrLen(s) > 1) { 835 return 0; 836 } 837 switch (*s) { 838 case 'T': case 't': 839 *result = n * GB * KB; 840 return 1; 841 case 'G': case 'g': 842 *result = n * GB; 843 return 1; 844 case 'M': case 'm': 845 *result = n * MB; 846 return 1; 847 case 'K': case 'k': 848 *result = n * KB; 849 return 1; 850 case '\0': 851 *result = n; 852 return 1; 853 default: 854 /* Create JVM with default stack and let VM handle malformed -Xss string*/ 855 return 0; 856 } 857} 858 859/* 860 * Adds a new VM option with the given name and value. 861 */ 862void 863AddOption(char *str, void *info) 864{ 865 /* 866 * Expand options array if needed to accommodate at least one more 867 * VM option. 868 */ 869 if (numOptions >= maxOptions) { 870 if (options == 0) { 871 maxOptions = 4; 872 options = JLI_MemAlloc(maxOptions * sizeof(JavaVMOption)); 873 } else { 874 JavaVMOption *tmp; 875 maxOptions *= 2; 876 tmp = JLI_MemAlloc(maxOptions * sizeof(JavaVMOption)); 877 memcpy(tmp, options, numOptions * sizeof(JavaVMOption)); 878 JLI_MemFree(options); 879 options = tmp; 880 } 881 } 882 options[numOptions].optionString = str; 883 options[numOptions++].extraInfo = info; 884 885 if (JLI_StrCCmp(str, "-Xss") == 0) { 886 jlong tmp; 887 if (parse_size(str + 4, &tmp)) { 888 threadStackSize = tmp; 889 /* 890 * Make sure the thread stack size is big enough that we won't get a stack 891 * overflow before the JVM startup code can check to make sure the stack 892 * is big enough. 893 */ 894 if (threadStackSize < (jlong)STACK_SIZE_MINIMUM) { 895 threadStackSize = STACK_SIZE_MINIMUM; 896 } 897 } 898 } 899 900 if (JLI_StrCCmp(str, "-Xmx") == 0) { 901 jlong tmp; 902 if (parse_size(str + 4, &tmp)) { 903 maxHeapSize = tmp; 904 } 905 } 906 907 if (JLI_StrCCmp(str, "-Xms") == 0) { 908 jlong tmp; 909 if (parse_size(str + 4, &tmp)) { 910 initialHeapSize = tmp; 911 } 912 } 913} 914 915static void 916SetClassPath(const char *s) 917{ 918 char *def; 919 const char *orig = s; 920 static const char format[] = "-Djava.class.path=%s"; 921 /* 922 * usually we should not get a null pointer, but there are cases where 923 * we might just get one, in which case we simply ignore it, and let the 924 * caller deal with it 925 */ 926 if (s == NULL) 927 return; 928 s = JLI_WildcardExpandClasspath(s); 929 if (sizeof(format) - 2 + JLI_StrLen(s) < JLI_StrLen(s)) 930 // s is became corrupted after expanding wildcards 931 return; 932 def = JLI_MemAlloc(sizeof(format) 933 - 2 /* strlen("%s") */ 934 + JLI_StrLen(s)); 935 sprintf(def, format, s); 936 AddOption(def, NULL); 937 if (s != orig) 938 JLI_MemFree((char *) s); 939 _have_classpath = JNI_TRUE; 940} 941 942static void 943AddLongFormOption(const char *option, const char *arg) 944{ 945 static const char format[] = "%s=%s"; 946 char *def; 947 size_t def_len; 948 949 def_len = JLI_StrLen(option) + 1 + JLI_StrLen(arg) + 1; 950 def = JLI_MemAlloc(def_len); 951 JLI_Snprintf(def, def_len, format, option, arg); 952 AddOption(def, NULL); 953} 954 955static void 956SetMainModule(const char *s) 957{ 958 static const char format[] = "-Djdk.module.main=%s"; 959 char* slash = JLI_StrChr(s, '/'); 960 size_t s_len, def_len; 961 char *def; 962 963 /* value may be <module> or <module>/<mainclass> */ 964 if (slash == NULL) { 965 s_len = JLI_StrLen(s); 966 } else { 967 s_len = (size_t) (slash - s); 968 } 969 def_len = sizeof(format) 970 - 2 /* strlen("%s") */ 971 + s_len; 972 def = JLI_MemAlloc(def_len); 973 JLI_Snprintf(def, def_len, format, s); 974 AddOption(def, 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 */ 985static void 986SelectVersion(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 jboolean has_arg; 1002 1003 /* 1004 * If the version has already been selected, set *main_class 1005 * with the value passed through the environment (if any) and 1006 * simply return. 1007 */ 1008 1009 /* 1010 * This environmental variable can be set by mJRE capable JREs 1011 * [ 1.5 thru 1.8 ]. All other aspects of mJRE processing have been 1012 * stripped by those JREs. This environmental variable allows 1.9+ 1013 * JREs to be started by these mJRE capable JREs. 1014 * Note that mJRE directives in the jar manifest file would have been 1015 * ignored for a JRE started by another JRE... 1016 * .. skipped for JRE 1.5 and beyond. 1017 * .. not even checked for pre 1.5. 1018 */ 1019 if ((env_in = getenv(ENV_ENTRY)) != NULL) { 1020 if (*env_in != '\0') 1021 *main_class = JLI_StringDup(env_in); 1022 return; 1023 } 1024 1025 /* 1026 * Scan through the arguments for options relevant to multiple JRE 1027 * support. Multiple JRE support existed in JRE versions 1.5 thru 1.8. 1028 * 1029 * This capability is no longer available with JRE versions 1.9 and later. 1030 * These command line options are reported as errors. 1031 */ 1032 1033 argc--; 1034 argv++; 1035 while ((arg = *argv) != 0 && *arg == '-') { 1036 has_arg = IsOptionWithArgument(argc, argv); 1037 if (JLI_StrCCmp(arg, "-version:") == 0) { 1038 JLI_ReportErrorMessage(SPC_ERROR1); 1039 } else if (JLI_StrCmp(arg, "-jre-restrict-search") == 0) { 1040 JLI_ReportErrorMessage(SPC_ERROR2); 1041 } else if (JLI_StrCmp(arg, "-jre-no-restrict-search") == 0) { 1042 JLI_ReportErrorMessage(SPC_ERROR2); 1043 } else { 1044 if (JLI_StrCmp(arg, "-jar") == 0) 1045 jarflag = 1; 1046 if (IsWhiteSpaceOption(arg)) { 1047 if (has_arg) { 1048 argc--; 1049 argv++; 1050 arg = *argv; 1051 } 1052 } 1053 1054 /* 1055 * Checking for headless toolkit option in the some way as AWT does: 1056 * "true" means true and any other value means false 1057 */ 1058 if (JLI_StrCmp(arg, "-Djava.awt.headless=true") == 0) { 1059 headlessflag = 1; 1060 } else if (JLI_StrCCmp(arg, "-Djava.awt.headless=") == 0) { 1061 headlessflag = 0; 1062 } else if (JLI_StrCCmp(arg, "-splash:") == 0) { 1063 splash_file_name = arg+8; 1064 } 1065 } 1066 argc--; 1067 argv++; 1068 } 1069 if (argc <= 0) { /* No operand? Possibly legit with -[full]version */ 1070 operand = NULL; 1071 } else { 1072 argc--; 1073 operand = *argv++; 1074 } 1075 1076 /* 1077 * If there is a jar file, read the manifest. If the jarfile can't be 1078 * read, the manifest can't be read from the jar file, or the manifest 1079 * is corrupt, issue the appropriate error messages and exit. 1080 * 1081 * Even if there isn't a jar file, construct a manifest_info structure 1082 * containing the command line information. It's a convenient way to carry 1083 * this data around. 1084 */ 1085 if (jarflag && operand) { 1086 if ((res = JLI_ParseManifest(operand, &info)) != 0) { 1087 if (res == -1) 1088 JLI_ReportErrorMessage(JAR_ERROR2, operand); 1089 else 1090 JLI_ReportErrorMessage(JAR_ERROR3, operand); 1091 exit(1); 1092 } 1093 1094 /* 1095 * Command line splash screen option should have precedence 1096 * over the manifest, so the manifest data is used only if 1097 * splash_file_name has not been initialized above during command 1098 * line parsing 1099 */ 1100 if (!headlessflag && !splash_file_name && info.splashscreen_image_file_name) { 1101 splash_file_name = info.splashscreen_image_file_name; 1102 splash_jar_name = operand; 1103 } 1104 } else { 1105 info.manifest_version = NULL; 1106 info.main_class = NULL; 1107 info.jre_version = NULL; 1108 info.jre_restrict_search = 0; 1109 } 1110 1111 /* 1112 * Passing on splash screen info in environment variables 1113 */ 1114 if (splash_file_name && !headlessflag) { 1115 char* splash_file_entry = JLI_MemAlloc(JLI_StrLen(SPLASH_FILE_ENV_ENTRY "=")+JLI_StrLen(splash_file_name)+1); 1116 JLI_StrCpy(splash_file_entry, SPLASH_FILE_ENV_ENTRY "="); 1117 JLI_StrCat(splash_file_entry, splash_file_name); 1118 putenv(splash_file_entry); 1119 } 1120 if (splash_jar_name && !headlessflag) { 1121 char* splash_jar_entry = JLI_MemAlloc(JLI_StrLen(SPLASH_JAR_ENV_ENTRY "=")+JLI_StrLen(splash_jar_name)+1); 1122 JLI_StrCpy(splash_jar_entry, SPLASH_JAR_ENV_ENTRY "="); 1123 JLI_StrCat(splash_jar_entry, splash_jar_name); 1124 putenv(splash_jar_entry); 1125 } 1126 1127 1128 /* 1129 * "Valid" returns (other than unrecoverable errors) follow. Set 1130 * main_class as a side-effect of this routine. 1131 */ 1132 if (info.main_class != NULL) 1133 *main_class = JLI_StringDup(info.main_class); 1134 1135 if (info.jre_version == NULL) { 1136 JLI_FreeManifest(); 1137 return; 1138 } 1139 1140} 1141 1142/* 1143 * Test if the current argv is an option, i.e. with a leading `-` 1144 * and followed with an argument without a leading `-`. 1145 */ 1146static jboolean 1147IsOptionWithArgument(int argc, char** argv) { 1148 char* option; 1149 char* arg; 1150 1151 if (argc <= 1) 1152 return JNI_FALSE; 1153 1154 option = *argv; 1155 arg = *(argv+1); 1156 return *option == '-' && *arg != '-'; 1157} 1158 1159/* 1160 * Gets the option, and its argument if the option has an argument. 1161 * It will update *pargc, **pargv to the next option. 1162 */ 1163static int 1164GetOpt(int *pargc, char ***pargv, char **poption, char **pvalue) { 1165 int argc = *pargc; 1166 char** argv = *pargv; 1167 char* arg = *argv; 1168 1169 char* option = arg; 1170 char* value = NULL; 1171 char* equals = NULL; 1172 int kind = LAUNCHER_OPTION; 1173 jboolean has_arg = JNI_FALSE; 1174 1175 // check if this option may be a white-space option with an argument 1176 has_arg = IsOptionWithArgument(argc, argv); 1177 1178 argv++; --argc; 1179 if (IsLauncherOption(arg)) { 1180 if (has_arg) { 1181 value = *argv; 1182 argv++; --argc; 1183 } 1184 kind = IsLauncherMainOption(arg) ? LAUNCHER_MAIN_OPTION 1185 : LAUNCHER_OPTION_WITH_ARGUMENT; 1186 } else if (IsModuleOption(arg)) { 1187 kind = VM_LONG_OPTION_WITH_ARGUMENT; 1188 if (has_arg) { 1189 value = *argv; 1190 argv++; --argc; 1191 } 1192 1193 /* 1194 * Support short form alias 1195 */ 1196 if (JLI_StrCmp(arg, "-p") == 0) { 1197 option = "--module-path"; 1198 } 1199 1200 } else if (JLI_StrCCmp(arg, "--") == 0 && (equals = JLI_StrChr(arg, '=')) != NULL) { 1201 value = equals+1; 1202 if (JLI_StrCCmp(arg, "--list-modules=") == 0 || 1203 JLI_StrCCmp(arg, "--module=") == 0 || 1204 JLI_StrCCmp(arg, "--class-path=") == 0) { 1205 kind = LAUNCHER_OPTION_WITH_ARGUMENT; 1206 } else { 1207 kind = VM_LONG_OPTION; 1208 } 1209 } 1210 1211 *pargc = argc; 1212 *pargv = argv; 1213 *poption = option; 1214 *pvalue = value; 1215 return kind; 1216} 1217 1218/* 1219 * Parses command line arguments. Returns JNI_FALSE if launcher 1220 * should exit without starting vm, returns JNI_TRUE if vm needs 1221 * to be started to process given options. *pret (the launcher 1222 * process return value) is set to 0 for a normal exit. 1223 */ 1224static jboolean 1225ParseArguments(int *pargc, char ***pargv, 1226 int *pmode, char **pwhat, 1227 int *pret, const char *jrepath) 1228{ 1229 int argc = *pargc; 1230 char **argv = *pargv; 1231 int mode = LM_UNKNOWN; 1232 char *arg; 1233 1234 *pret = 0; 1235 1236 while ((arg = *argv) != 0 && *arg == '-') { 1237 char *option = NULL; 1238 char *value = NULL; 1239 int kind = GetOpt(&argc, &argv, &option, &value); 1240 jboolean has_arg = value != NULL && JLI_StrLen(value) > 0; 1241 jboolean has_arg_any_len = value != NULL; 1242 1243/* 1244 * Option to set main entry point 1245 */ 1246 if (JLI_StrCmp(arg, "-jar") == 0) { 1247 ARG_CHECK(argc, ARG_ERROR2, arg); 1248 mode = LM_JAR; 1249 } else if (JLI_StrCmp(arg, "--module") == 0 || 1250 JLI_StrCCmp(arg, "--module=") == 0 || 1251 JLI_StrCmp(arg, "-m") == 0) { 1252 REPORT_ERROR (has_arg, ARG_ERROR5, arg); 1253 SetMainModule(value); 1254 mode = LM_MODULE; 1255 if (has_arg) { 1256 *pwhat = value; 1257 break; 1258 } 1259 } else if (JLI_StrCmp(arg, "--class-path") == 0 || 1260 JLI_StrCCmp(arg, "--class-path=") == 0 || 1261 JLI_StrCmp(arg, "-classpath") == 0 || 1262 JLI_StrCmp(arg, "-cp") == 0) { 1263 REPORT_ERROR (has_arg_any_len, ARG_ERROR1, arg); 1264 SetClassPath(value); 1265 mode = LM_CLASS; 1266 } else if (JLI_StrCmp(arg, "--list-modules") == 0 || 1267 JLI_StrCCmp(arg, "--list-modules=") == 0) { 1268 listModules = arg; 1269 1270 // set listModules to --list-modules=<module-names> if argument is specified 1271 if (JLI_StrCmp(arg, "--list-modules") == 0 && has_arg) { 1272 static const char format[] = "%s=%s"; 1273 size_t buflen = JLI_StrLen(option) + 2 + JLI_StrLen(value); 1274 listModules = JLI_MemAlloc(buflen); 1275 JLI_Snprintf(listModules, buflen, format, option, value); 1276 } 1277 return JNI_TRUE; 1278/* 1279 * Parse white-space options 1280 */ 1281 } else if (has_arg) { 1282 if (kind == VM_LONG_OPTION) { 1283 AddOption(option, NULL); 1284 } else if (kind == VM_LONG_OPTION_WITH_ARGUMENT) { 1285 AddLongFormOption(option, value); 1286 } 1287/* 1288 * Error missing argument 1289 */ 1290 } else if (!has_arg && (JLI_StrCmp(arg, "--module-path") == 0 || 1291 JLI_StrCmp(arg, "-p") == 0 || 1292 JLI_StrCmp(arg, "--upgrade-module-path") == 0)) { 1293 REPORT_ERROR (has_arg, ARG_ERROR4, arg); 1294 1295 } else if (!has_arg && (IsModuleOption(arg) || IsLongFormModuleOption(arg))) { 1296 REPORT_ERROR (has_arg, ARG_ERROR6, arg); 1297/* 1298 * The following cases will cause the argument parsing to stop 1299 */ 1300 } else if (JLI_StrCmp(arg, "-help") == 0 || 1301 JLI_StrCmp(arg, "-h") == 0 || 1302 JLI_StrCmp(arg, "-?") == 0) { 1303 printUsage = JNI_TRUE; 1304 return JNI_TRUE; 1305 } else if (JLI_StrCmp(arg, "--help") == 0) { 1306 printUsage = JNI_TRUE; 1307 printTo = USE_STDOUT; 1308 return JNI_TRUE; 1309 } else if (JLI_StrCmp(arg, "-version") == 0) { 1310 printVersion = JNI_TRUE; 1311 return JNI_TRUE; 1312 } else if (JLI_StrCmp(arg, "--version") == 0) { 1313 printVersion = JNI_TRUE; 1314 printTo = USE_STDOUT; 1315 return JNI_TRUE; 1316 } else if (JLI_StrCmp(arg, "-showversion") == 0) { 1317 showVersion = JNI_TRUE; 1318 } else if (JLI_StrCmp(arg, "--show-version") == 0) { 1319 showVersion = JNI_TRUE; 1320 printTo = USE_STDOUT; 1321 } else if (JLI_StrCmp(arg, "--dry-run") == 0) { 1322 dryRun = JNI_TRUE; 1323 } else if (JLI_StrCmp(arg, "-X") == 0) { 1324 printXUsage = JNI_TRUE; 1325 return JNI_TRUE; 1326 } else if (JLI_StrCmp(arg, "--help-extra") == 0) { 1327 printXUsage = JNI_TRUE; 1328 printTo = USE_STDOUT; 1329 return JNI_TRUE; 1330/* 1331 * The following case checks for -XshowSettings OR -XshowSetting:SUBOPT. 1332 * In the latter case, any SUBOPT value not recognized will default to "all" 1333 */ 1334 } else if (JLI_StrCmp(arg, "-XshowSettings") == 0 || 1335 JLI_StrCCmp(arg, "-XshowSettings:") == 0) { 1336 showSettings = arg; 1337 } else if (JLI_StrCmp(arg, "-Xdiag") == 0) { 1338 AddOption("-Dsun.java.launcher.diag=true", NULL); 1339 AddOption("-Djdk.launcher.traceResolver=true", NULL); 1340 } else if (JLI_StrCmp(arg, "-Xdiag:resolver") == 0) { 1341 AddOption("-Djdk.launcher.traceResolver=true", NULL); 1342/* 1343 * The following case provide backward compatibility with old-style 1344 * command line options. 1345 */ 1346 } else if (JLI_StrCmp(arg, "-fullversion") == 0) { 1347 JLI_ReportMessage("%s full version \"%s\"", _launcher_name, GetFullVersion()); 1348 return JNI_FALSE; 1349 } else if (JLI_StrCmp(arg, "--full-version") == 0) { 1350 JLI_ShowMessage("%s %s", _launcher_name, GetFullVersion()); 1351 return JNI_FALSE; 1352 } else if (JLI_StrCmp(arg, "-verbosegc") == 0) { 1353 AddOption("-verbose:gc", NULL); 1354 } else if (JLI_StrCmp(arg, "-t") == 0) { 1355 AddOption("-Xt", NULL); 1356 } else if (JLI_StrCmp(arg, "-tm") == 0) { 1357 AddOption("-Xtm", NULL); 1358 } else if (JLI_StrCmp(arg, "-debug") == 0) { 1359 AddOption("-Xdebug", NULL); 1360 } else if (JLI_StrCmp(arg, "-noclassgc") == 0) { 1361 AddOption("-Xnoclassgc", NULL); 1362 } else if (JLI_StrCmp(arg, "-Xfuture") == 0) { 1363 AddOption("-Xverify:all", NULL); 1364 } else if (JLI_StrCmp(arg, "-verify") == 0) { 1365 AddOption("-Xverify:all", NULL); 1366 } else if (JLI_StrCmp(arg, "-verifyremote") == 0) { 1367 AddOption("-Xverify:remote", NULL); 1368 } else if (JLI_StrCmp(arg, "-noverify") == 0) { 1369 AddOption("-Xverify:none", NULL); 1370 } else if (JLI_StrCCmp(arg, "-ss") == 0 || 1371 JLI_StrCCmp(arg, "-oss") == 0 || 1372 JLI_StrCCmp(arg, "-ms") == 0 || 1373 JLI_StrCCmp(arg, "-mx") == 0) { 1374 char *tmp = JLI_MemAlloc(JLI_StrLen(arg) + 6); 1375 sprintf(tmp, "-X%s", arg + 1); /* skip '-' */ 1376 AddOption(tmp, NULL); 1377 } else if (JLI_StrCmp(arg, "-checksource") == 0 || 1378 JLI_StrCmp(arg, "-cs") == 0 || 1379 JLI_StrCmp(arg, "-noasyncgc") == 0) { 1380 /* No longer supported */ 1381 JLI_ReportErrorMessage(ARG_WARN, arg); 1382 } else if (JLI_StrCCmp(arg, "-splash:") == 0) { 1383 ; /* Ignore machine independent options already handled */ 1384 } else if (ProcessPlatformOption(arg)) { 1385 ; /* Processing of platform dependent options */ 1386 } else if (RemovableOption(arg)) { 1387 ; /* Do not pass option to vm. */ 1388 } else { 1389 /* java.class.path set on the command line */ 1390 if (JLI_StrCCmp(arg, "-Djava.class.path=") == 0) { 1391 _have_classpath = JNI_TRUE; 1392 } 1393 AddOption(arg, NULL); 1394 } 1395 } 1396 1397 if (*pwhat == NULL && --argc >= 0) { 1398 *pwhat = *argv++; 1399 } 1400 1401 if (*pwhat == NULL) { 1402 *pret = 1; 1403 } else if (mode == LM_UNKNOWN) { 1404 /* default to LM_CLASS if -m, -jar and -cp options are 1405 * not specified */ 1406 if (!_have_classpath) { 1407 SetClassPath("."); 1408 } 1409 mode = LM_CLASS; 1410 } 1411 1412 if (argc >= 0) { 1413 *pargc = argc; 1414 *pargv = argv; 1415 } 1416 1417 *pmode = mode; 1418 1419 return JNI_TRUE; 1420} 1421 1422/* 1423 * Initializes the Java Virtual Machine. Also frees options array when 1424 * finished. 1425 */ 1426static jboolean 1427InitializeJVM(JavaVM **pvm, JNIEnv **penv, InvocationFunctions *ifn) 1428{ 1429 JavaVMInitArgs args; 1430 jint r; 1431 1432 memset(&args, 0, sizeof(args)); 1433 args.version = JNI_VERSION_1_2; 1434 args.nOptions = numOptions; 1435 args.options = options; 1436 args.ignoreUnrecognized = JNI_FALSE; 1437 1438 if (JLI_IsTraceLauncher()) { 1439 int i = 0; 1440 printf("JavaVM args:\n "); 1441 printf("version 0x%08lx, ", (long)args.version); 1442 printf("ignoreUnrecognized is %s, ", 1443 args.ignoreUnrecognized ? "JNI_TRUE" : "JNI_FALSE"); 1444 printf("nOptions is %ld\n", (long)args.nOptions); 1445 for (i = 0; i < numOptions; i++) 1446 printf(" option[%2d] = '%s'\n", 1447 i, args.options[i].optionString); 1448 } 1449 1450 r = ifn->CreateJavaVM(pvm, (void **)penv, &args); 1451 JLI_MemFree(options); 1452 return r == JNI_OK; 1453} 1454 1455static jclass helperClass = NULL; 1456 1457jclass 1458GetLauncherHelperClass(JNIEnv *env) 1459{ 1460 if (helperClass == NULL) { 1461 NULL_CHECK0(helperClass = FindBootStrapClass(env, 1462 "sun/launcher/LauncherHelper")); 1463 } 1464 return helperClass; 1465} 1466 1467static jmethodID makePlatformStringMID = NULL; 1468/* 1469 * Returns a new Java string object for the specified platform string. 1470 */ 1471static jstring 1472NewPlatformString(JNIEnv *env, char *s) 1473{ 1474 int len = (int)JLI_StrLen(s); 1475 jbyteArray ary; 1476 jclass cls = GetLauncherHelperClass(env); 1477 NULL_CHECK0(cls); 1478 if (s == NULL) 1479 return 0; 1480 1481 ary = (*env)->NewByteArray(env, len); 1482 if (ary != 0) { 1483 jstring str = 0; 1484 (*env)->SetByteArrayRegion(env, ary, 0, len, (jbyte *)s); 1485 if (!(*env)->ExceptionOccurred(env)) { 1486 if (makePlatformStringMID == NULL) { 1487 NULL_CHECK0(makePlatformStringMID = (*env)->GetStaticMethodID(env, 1488 cls, "makePlatformString", "(Z[B)Ljava/lang/String;")); 1489 } 1490 str = (*env)->CallStaticObjectMethod(env, cls, 1491 makePlatformStringMID, USE_STDERR, ary); 1492 (*env)->DeleteLocalRef(env, ary); 1493 return str; 1494 } 1495 } 1496 return 0; 1497} 1498 1499/* 1500 * Returns a new array of Java string objects for the specified 1501 * array of platform strings. 1502 */ 1503jobjectArray 1504NewPlatformStringArray(JNIEnv *env, char **strv, int strc) 1505{ 1506 jarray cls; 1507 jarray ary; 1508 int i; 1509 1510 NULL_CHECK0(cls = FindBootStrapClass(env, "java/lang/String")); 1511 NULL_CHECK0(ary = (*env)->NewObjectArray(env, strc, cls, 0)); 1512 CHECK_EXCEPTION_RETURN_VALUE(0); 1513 for (i = 0; i < strc; i++) { 1514 jstring str = NewPlatformString(env, *strv++); 1515 NULL_CHECK0(str); 1516 (*env)->SetObjectArrayElement(env, ary, i, str); 1517 (*env)->DeleteLocalRef(env, str); 1518 } 1519 return ary; 1520} 1521 1522/* 1523 * Loads a class and verifies that the main class is present and it is ok to 1524 * call it for more details refer to the java implementation. 1525 */ 1526static jclass 1527LoadMainClass(JNIEnv *env, int mode, char *name) 1528{ 1529 jmethodID mid; 1530 jstring str; 1531 jobject result; 1532 jlong start, end; 1533 jclass cls = GetLauncherHelperClass(env); 1534 NULL_CHECK0(cls); 1535 if (JLI_IsTraceLauncher()) { 1536 start = CounterGet(); 1537 } 1538 NULL_CHECK0(mid = (*env)->GetStaticMethodID(env, cls, 1539 "checkAndLoadMain", 1540 "(ZILjava/lang/String;)Ljava/lang/Class;")); 1541 1542 NULL_CHECK0(str = NewPlatformString(env, name)); 1543 NULL_CHECK0(result = (*env)->CallStaticObjectMethod(env, cls, mid, 1544 USE_STDERR, mode, str)); 1545 1546 if (JLI_IsTraceLauncher()) { 1547 end = CounterGet(); 1548 printf("%ld micro seconds to load main class\n", 1549 (long)(jint)Counter2Micros(end-start)); 1550 printf("----%s----\n", JLDEBUG_ENV_ENTRY); 1551 } 1552 1553 return (jclass)result; 1554} 1555 1556static jclass 1557GetApplicationClass(JNIEnv *env) 1558{ 1559 jmethodID mid; 1560 jclass cls = GetLauncherHelperClass(env); 1561 NULL_CHECK0(cls); 1562 NULL_CHECK0(mid = (*env)->GetStaticMethodID(env, cls, 1563 "getApplicationClass", 1564 "()Ljava/lang/Class;")); 1565 1566 return (*env)->CallStaticObjectMethod(env, cls, mid); 1567} 1568 1569static char* expandWildcardOnLongOpt(char* arg) { 1570 char *p, *value; 1571 size_t optLen, valueLen; 1572 p = JLI_StrChr(arg, '='); 1573 1574 if (p == NULL || p[1] == '\0') { 1575 JLI_ReportErrorMessage(ARG_ERROR1, arg); 1576 exit(1); 1577 } 1578 p++; 1579 value = (char *) JLI_WildcardExpandClasspath(p); 1580 if (p == value) { 1581 // no wildcard 1582 return arg; 1583 } 1584 1585 optLen = p - arg; 1586 valueLen = JLI_StrLen(value); 1587 p = JLI_MemAlloc(optLen + valueLen + 1); 1588 memcpy(p, arg, optLen); 1589 memcpy(p + optLen, value, valueLen); 1590 p[optLen + valueLen] = '\0'; 1591 return p; 1592} 1593 1594/* 1595 * For tools, convert command line args thus: 1596 * javac -cp foo:foo/"*" -J-ms32m ... 1597 * java -ms32m -cp JLI_WildcardExpandClasspath(foo:foo/"*") ... 1598 * 1599 * Takes 4 parameters, and returns the populated arguments 1600 */ 1601static void 1602TranslateApplicationArgs(int jargc, const char **jargv, int *pargc, char ***pargv) 1603{ 1604 int argc = *pargc; 1605 char **argv = *pargv; 1606 int nargc = argc + jargc; 1607 char **nargv = JLI_MemAlloc((nargc + 1) * sizeof(char *)); 1608 int i; 1609 1610 *pargc = nargc; 1611 *pargv = nargv; 1612 1613 /* Copy the VM arguments (i.e. prefixed with -J) */ 1614 for (i = 0; i < jargc; i++) { 1615 const char *arg = jargv[i]; 1616 if (arg[0] == '-' && arg[1] == 'J') { 1617 *nargv++ = ((arg + 2) == NULL) ? NULL : JLI_StringDup(arg + 2); 1618 } 1619 } 1620 1621 for (i = 0; i < argc; i++) { 1622 char *arg = argv[i]; 1623 if (arg[0] == '-' && arg[1] == 'J') { 1624 if (arg[2] == '\0') { 1625 JLI_ReportErrorMessage(ARG_ERROR3); 1626 exit(1); 1627 } 1628 *nargv++ = arg + 2; 1629 } 1630 } 1631 1632 /* Copy the rest of the arguments */ 1633 for (i = 0; i < jargc ; i++) { 1634 const char *arg = jargv[i]; 1635 if (arg[0] != '-' || arg[1] != 'J') { 1636 *nargv++ = (arg == NULL) ? NULL : JLI_StringDup(arg); 1637 } 1638 } 1639 for (i = 0; i < argc; i++) { 1640 char *arg = argv[i]; 1641 if (arg[0] == '-') { 1642 if (arg[1] == 'J') 1643 continue; 1644 if (IsWildCardEnabled()) { 1645 if (IsClassPathOption(arg) && i < argc - 1) { 1646 *nargv++ = arg; 1647 *nargv++ = (char *) JLI_WildcardExpandClasspath(argv[i+1]); 1648 i++; 1649 continue; 1650 } 1651 if (JLI_StrCCmp(arg, "--class-path=") == 0) { 1652 *nargv++ = expandWildcardOnLongOpt(arg); 1653 continue; 1654 } 1655 } 1656 } 1657 *nargv++ = arg; 1658 } 1659 *nargv = 0; 1660} 1661 1662/* 1663 * For our tools, we try to add 3 VM options: 1664 * -Denv.class.path=<envcp> 1665 * -Dapplication.home=<apphome> 1666 * -Djava.class.path=<appcp> 1667 * <envcp> is the user's setting of CLASSPATH -- for instance the user 1668 * tells javac where to find binary classes through this environment 1669 * variable. Notice that users will be able to compile against our 1670 * tools classes (sun.tools.javac.Main) only if they explicitly add 1671 * tools.jar to CLASSPATH. 1672 * <apphome> is the directory where the application is installed. 1673 * <appcp> is the classpath to where our apps' classfiles are. 1674 */ 1675static jboolean 1676AddApplicationOptions(int cpathc, const char **cpathv) 1677{ 1678 char *envcp, *appcp, *apphome; 1679 char home[MAXPATHLEN]; /* application home */ 1680 char separator[] = { PATH_SEPARATOR, '\0' }; 1681 int size, i; 1682 1683 { 1684 const char *s = getenv("CLASSPATH"); 1685 if (s) { 1686 s = (char *) JLI_WildcardExpandClasspath(s); 1687 /* 40 for -Denv.class.path= */ 1688 if (JLI_StrLen(s) + 40 > JLI_StrLen(s)) { // Safeguard from overflow 1689 envcp = (char *)JLI_MemAlloc(JLI_StrLen(s) + 40); 1690 sprintf(envcp, "-Denv.class.path=%s", s); 1691 AddOption(envcp, NULL); 1692 } 1693 } 1694 } 1695 1696 if (!GetApplicationHome(home, sizeof(home))) { 1697 JLI_ReportErrorMessage(CFG_ERROR5); 1698 return JNI_FALSE; 1699 } 1700 1701 /* 40 for '-Dapplication.home=' */ 1702 apphome = (char *)JLI_MemAlloc(JLI_StrLen(home) + 40); 1703 sprintf(apphome, "-Dapplication.home=%s", home); 1704 AddOption(apphome, NULL); 1705 1706 /* How big is the application's classpath? */ 1707 if (cpathc > 0) { 1708 size = 40; /* 40: "-Djava.class.path=" */ 1709 for (i = 0; i < cpathc; i++) { 1710 size += (int)JLI_StrLen(home) + (int)JLI_StrLen(cpathv[i]) + 1; /* 1: separator */ 1711 } 1712 appcp = (char *)JLI_MemAlloc(size + 1); 1713 JLI_StrCpy(appcp, "-Djava.class.path="); 1714 for (i = 0; i < cpathc; i++) { 1715 JLI_StrCat(appcp, home); /* c:\program files\myapp */ 1716 JLI_StrCat(appcp, cpathv[i]); /* \lib\myapp.jar */ 1717 JLI_StrCat(appcp, separator); /* ; */ 1718 } 1719 appcp[JLI_StrLen(appcp)-1] = '\0'; /* remove trailing path separator */ 1720 AddOption(appcp, NULL); 1721 } 1722 return JNI_TRUE; 1723} 1724 1725/* 1726 * inject the -Dsun.java.command pseudo property into the args structure 1727 * this pseudo property is used in the HotSpot VM to expose the 1728 * Java class name and arguments to the main method to the VM. The 1729 * HotSpot VM uses this pseudo property to store the Java class name 1730 * (or jar file name) and the arguments to the class's main method 1731 * to the instrumentation memory region. The sun.java.command pseudo 1732 * property is not exported by HotSpot to the Java layer. 1733 */ 1734void 1735SetJavaCommandLineProp(char *what, int argc, char **argv) 1736{ 1737 1738 int i = 0; 1739 size_t len = 0; 1740 char* javaCommand = NULL; 1741 char* dashDstr = "-Dsun.java.command="; 1742 1743 if (what == NULL) { 1744 /* unexpected, one of these should be set. just return without 1745 * setting the property 1746 */ 1747 return; 1748 } 1749 1750 /* determine the amount of memory to allocate assuming 1751 * the individual components will be space separated 1752 */ 1753 len = JLI_StrLen(what); 1754 for (i = 0; i < argc; i++) { 1755 len += JLI_StrLen(argv[i]) + 1; 1756 } 1757 1758 /* allocate the memory */ 1759 javaCommand = (char*) JLI_MemAlloc(len + JLI_StrLen(dashDstr) + 1); 1760 1761 /* build the -D string */ 1762 *javaCommand = '\0'; 1763 JLI_StrCat(javaCommand, dashDstr); 1764 JLI_StrCat(javaCommand, what); 1765 1766 for (i = 0; i < argc; i++) { 1767 /* the components of the string are space separated. In 1768 * the case of embedded white space, the relationship of 1769 * the white space separated components to their true 1770 * positional arguments will be ambiguous. This issue may 1771 * be addressed in a future release. 1772 */ 1773 JLI_StrCat(javaCommand, " "); 1774 JLI_StrCat(javaCommand, argv[i]); 1775 } 1776 1777 AddOption(javaCommand, NULL); 1778} 1779 1780/* 1781 * JVM would like to know if it's created by a standard Sun launcher, or by 1782 * user native application, the following property indicates the former. 1783 */ 1784void 1785SetJavaLauncherProp() { 1786 AddOption("-Dsun.java.launcher=SUN_STANDARD", NULL); 1787} 1788 1789/* 1790 * Prints the version information from the java.version and other properties. 1791 */ 1792static void 1793PrintJavaVersion(JNIEnv *env, jboolean extraLF) 1794{ 1795 jclass ver; 1796 jmethodID print; 1797 1798 NULL_CHECK(ver = FindBootStrapClass(env, "java/lang/VersionProps")); 1799 NULL_CHECK(print = (*env)->GetStaticMethodID(env, 1800 ver, 1801 (extraLF == JNI_TRUE) ? "println" : "print", 1802 "(Z)V" 1803 ) 1804 ); 1805 1806 (*env)->CallStaticVoidMethod(env, ver, print, printTo); 1807} 1808 1809/* 1810 * Prints all the Java settings, see the java implementation for more details. 1811 */ 1812static void 1813ShowSettings(JNIEnv *env, char *optString) 1814{ 1815 jmethodID showSettingsID; 1816 jstring joptString; 1817 jclass cls = GetLauncherHelperClass(env); 1818 NULL_CHECK(cls); 1819 NULL_CHECK(showSettingsID = (*env)->GetStaticMethodID(env, cls, 1820 "showSettings", "(ZLjava/lang/String;JJJ)V")); 1821 NULL_CHECK(joptString = (*env)->NewStringUTF(env, optString)); 1822 (*env)->CallStaticVoidMethod(env, cls, showSettingsID, 1823 USE_STDERR, 1824 joptString, 1825 (jlong)initialHeapSize, 1826 (jlong)maxHeapSize, 1827 (jlong)threadStackSize); 1828} 1829 1830/** 1831 * List modules supported by the runtime 1832 */ 1833static void 1834ListModules(JNIEnv *env, char *optString) 1835{ 1836 jmethodID listModulesID; 1837 jstring joptString = NULL; 1838 jclass cls = GetLauncherHelperClass(env); 1839 NULL_CHECK(cls); 1840 NULL_CHECK(listModulesID = (*env)->GetStaticMethodID(env, cls, 1841 "listModules", "(ZLjava/lang/String;)V")); 1842 NULL_CHECK(joptString = (*env)->NewStringUTF(env, optString)); 1843 (*env)->CallStaticVoidMethod(env, cls, listModulesID, 1844 USE_STDOUT, 1845 joptString); 1846} 1847 1848/* 1849 * Prints default usage or the Xusage message, see sun.launcher.LauncherHelper.java 1850 */ 1851static void 1852PrintUsage(JNIEnv* env, jboolean doXUsage) 1853{ 1854 jmethodID initHelp, vmSelect, vmSynonym, printHelp, printXUsageMessage; 1855 jstring jprogname, vm1, vm2; 1856 int i; 1857 jclass cls = GetLauncherHelperClass(env); 1858 NULL_CHECK(cls); 1859 if (doXUsage) { 1860 NULL_CHECK(printXUsageMessage = (*env)->GetStaticMethodID(env, cls, 1861 "printXUsageMessage", "(Z)V")); 1862 (*env)->CallStaticVoidMethod(env, cls, printXUsageMessage, printTo); 1863 } else { 1864 NULL_CHECK(initHelp = (*env)->GetStaticMethodID(env, cls, 1865 "initHelpMessage", "(Ljava/lang/String;)V")); 1866 1867 NULL_CHECK(vmSelect = (*env)->GetStaticMethodID(env, cls, "appendVmSelectMessage", 1868 "(Ljava/lang/String;Ljava/lang/String;)V")); 1869 1870 NULL_CHECK(vmSynonym = (*env)->GetStaticMethodID(env, cls, 1871 "appendVmSynonymMessage", 1872 "(Ljava/lang/String;Ljava/lang/String;)V")); 1873 1874 NULL_CHECK(printHelp = (*env)->GetStaticMethodID(env, cls, 1875 "printHelpMessage", "(Z)V")); 1876 1877 NULL_CHECK(jprogname = (*env)->NewStringUTF(env, _program_name)); 1878 1879 /* Initialize the usage message with the usual preamble */ 1880 (*env)->CallStaticVoidMethod(env, cls, initHelp, jprogname); 1881 CHECK_EXCEPTION_RETURN(); 1882 1883 1884 /* Assemble the other variant part of the usage */ 1885 for (i=1; i<knownVMsCount; i++) { 1886 if (knownVMs[i].flag == VM_KNOWN) { 1887 NULL_CHECK(vm1 = (*env)->NewStringUTF(env, knownVMs[i].name)); 1888 NULL_CHECK(vm2 = (*env)->NewStringUTF(env, knownVMs[i].name+1)); 1889 (*env)->CallStaticVoidMethod(env, cls, vmSelect, vm1, vm2); 1890 CHECK_EXCEPTION_RETURN(); 1891 } 1892 } 1893 for (i=1; i<knownVMsCount; i++) { 1894 if (knownVMs[i].flag == VM_ALIASED_TO) { 1895 NULL_CHECK(vm1 = (*env)->NewStringUTF(env, knownVMs[i].name)); 1896 NULL_CHECK(vm2 = (*env)->NewStringUTF(env, knownVMs[i].alias+1)); 1897 (*env)->CallStaticVoidMethod(env, cls, vmSynonym, vm1, vm2); 1898 CHECK_EXCEPTION_RETURN(); 1899 } 1900 } 1901 1902 /* Complete the usage message and print to stderr*/ 1903 (*env)->CallStaticVoidMethod(env, cls, printHelp, printTo); 1904 } 1905 return; 1906} 1907 1908/* 1909 * Read the jvm.cfg file and fill the knownJVMs[] array. 1910 * 1911 * The functionality of the jvm.cfg file is subject to change without 1912 * notice and the mechanism will be removed in the future. 1913 * 1914 * The lexical structure of the jvm.cfg file is as follows: 1915 * 1916 * jvmcfg := { vmLine } 1917 * vmLine := knownLine 1918 * | aliasLine 1919 * | warnLine 1920 * | ignoreLine 1921 * | errorLine 1922 * | predicateLine 1923 * | commentLine 1924 * knownLine := flag "KNOWN" EOL 1925 * warnLine := flag "WARN" EOL 1926 * ignoreLine := flag "IGNORE" EOL 1927 * errorLine := flag "ERROR" EOL 1928 * aliasLine := flag "ALIASED_TO" flag EOL 1929 * predicateLine := flag "IF_SERVER_CLASS" flag EOL 1930 * commentLine := "#" text EOL 1931 * flag := "-" identifier 1932 * 1933 * The semantics are that when someone specifies a flag on the command line: 1934 * - if the flag appears on a knownLine, then the identifier is used as 1935 * the name of the directory holding the JVM library (the name of the JVM). 1936 * - if the flag appears as the first flag on an aliasLine, the identifier 1937 * of the second flag is used as the name of the JVM. 1938 * - if the flag appears on a warnLine, the identifier is used as the 1939 * name of the JVM, but a warning is generated. 1940 * - if the flag appears on an ignoreLine, the identifier is recognized as the 1941 * name of a JVM, but the identifier is ignored and the default vm used 1942 * - if the flag appears on an errorLine, an error is generated. 1943 * - if the flag appears as the first flag on a predicateLine, and 1944 * the machine on which you are running passes the predicate indicated, 1945 * then the identifier of the second flag is used as the name of the JVM, 1946 * otherwise the identifier of the first flag is used as the name of the JVM. 1947 * If no flag is given on the command line, the first vmLine of the jvm.cfg 1948 * file determines the name of the JVM. 1949 * PredicateLines are only interpreted on first vmLine of a jvm.cfg file, 1950 * since they only make sense if someone hasn't specified the name of the 1951 * JVM on the command line. 1952 * 1953 * The intent of the jvm.cfg file is to allow several JVM libraries to 1954 * be installed in different subdirectories of a single JRE installation, 1955 * for space-savings and convenience in testing. 1956 * The intent is explicitly not to provide a full aliasing or predicate 1957 * mechanism. 1958 */ 1959jint 1960ReadKnownVMs(const char *jvmCfgName, jboolean speculative) 1961{ 1962 FILE *jvmCfg; 1963 char line[MAXPATHLEN+20]; 1964 int cnt = 0; 1965 int lineno = 0; 1966 jlong start, end; 1967 int vmType; 1968 char *tmpPtr; 1969 char *altVMName = NULL; 1970 char *serverClassVMName = NULL; 1971 static char *whiteSpace = " \t"; 1972 if (JLI_IsTraceLauncher()) { 1973 start = CounterGet(); 1974 } 1975 1976 jvmCfg = fopen(jvmCfgName, "r"); 1977 if (jvmCfg == NULL) { 1978 if (!speculative) { 1979 JLI_ReportErrorMessage(CFG_ERROR6, jvmCfgName); 1980 exit(1); 1981 } else { 1982 return -1; 1983 } 1984 } 1985 while (fgets(line, sizeof(line), jvmCfg) != NULL) { 1986 vmType = VM_UNKNOWN; 1987 lineno++; 1988 if (line[0] == '#') 1989 continue; 1990 if (line[0] != '-') { 1991 JLI_ReportErrorMessage(CFG_WARN2, lineno, jvmCfgName); 1992 } 1993 if (cnt >= knownVMsLimit) { 1994 GrowKnownVMs(cnt); 1995 } 1996 line[JLI_StrLen(line)-1] = '\0'; /* remove trailing newline */ 1997 tmpPtr = line + JLI_StrCSpn(line, whiteSpace); 1998 if (*tmpPtr == 0) { 1999 JLI_ReportErrorMessage(CFG_WARN3, lineno, jvmCfgName); 2000 } else { 2001 /* Null-terminate this string for JLI_StringDup below */ 2002 *tmpPtr++ = 0; 2003 tmpPtr += JLI_StrSpn(tmpPtr, whiteSpace); 2004 if (*tmpPtr == 0) { 2005 JLI_ReportErrorMessage(CFG_WARN3, lineno, jvmCfgName); 2006 } else { 2007 if (!JLI_StrCCmp(tmpPtr, "KNOWN")) { 2008 vmType = VM_KNOWN; 2009 } else if (!JLI_StrCCmp(tmpPtr, "ALIASED_TO")) { 2010 tmpPtr += JLI_StrCSpn(tmpPtr, whiteSpace); 2011 if (*tmpPtr != 0) { 2012 tmpPtr += JLI_StrSpn(tmpPtr, whiteSpace); 2013 } 2014 if (*tmpPtr == 0) { 2015 JLI_ReportErrorMessage(CFG_WARN3, lineno, jvmCfgName); 2016 } else { 2017 /* Null terminate altVMName */ 2018 altVMName = tmpPtr; 2019 tmpPtr += JLI_StrCSpn(tmpPtr, whiteSpace); 2020 *tmpPtr = 0; 2021 vmType = VM_ALIASED_TO; 2022 } 2023 } else if (!JLI_StrCCmp(tmpPtr, "WARN")) { 2024 vmType = VM_WARN; 2025 } else if (!JLI_StrCCmp(tmpPtr, "IGNORE")) { 2026 vmType = VM_IGNORE; 2027 } else if (!JLI_StrCCmp(tmpPtr, "ERROR")) { 2028 vmType = VM_ERROR; 2029 } else if (!JLI_StrCCmp(tmpPtr, "IF_SERVER_CLASS")) { 2030 /* ignored */ 2031 } else { 2032 JLI_ReportErrorMessage(CFG_WARN5, lineno, &jvmCfgName[0]); 2033 vmType = VM_KNOWN; 2034 } 2035 } 2036 } 2037 2038 JLI_TraceLauncher("jvm.cfg[%d] = ->%s<-\n", cnt, line); 2039 if (vmType != VM_UNKNOWN) { 2040 knownVMs[cnt].name = JLI_StringDup(line); 2041 knownVMs[cnt].flag = vmType; 2042 switch (vmType) { 2043 default: 2044 break; 2045 case VM_ALIASED_TO: 2046 knownVMs[cnt].alias = JLI_StringDup(altVMName); 2047 JLI_TraceLauncher(" name: %s vmType: %s alias: %s\n", 2048 knownVMs[cnt].name, "VM_ALIASED_TO", knownVMs[cnt].alias); 2049 break; 2050 } 2051 cnt++; 2052 } 2053 } 2054 fclose(jvmCfg); 2055 knownVMsCount = cnt; 2056 2057 if (JLI_IsTraceLauncher()) { 2058 end = CounterGet(); 2059 printf("%ld micro seconds to parse jvm.cfg\n", 2060 (long)(jint)Counter2Micros(end-start)); 2061 } 2062 2063 return cnt; 2064} 2065 2066 2067static void 2068GrowKnownVMs(int minimum) 2069{ 2070 struct vmdesc* newKnownVMs; 2071 int newMax; 2072 2073 newMax = (knownVMsLimit == 0 ? INIT_MAX_KNOWN_VMS : (2 * knownVMsLimit)); 2074 if (newMax <= minimum) { 2075 newMax = minimum; 2076 } 2077 newKnownVMs = (struct vmdesc*) JLI_MemAlloc(newMax * sizeof(struct vmdesc)); 2078 if (knownVMs != NULL) { 2079 memcpy(newKnownVMs, knownVMs, knownVMsLimit * sizeof(struct vmdesc)); 2080 } 2081 JLI_MemFree(knownVMs); 2082 knownVMs = newKnownVMs; 2083 knownVMsLimit = newMax; 2084} 2085 2086 2087/* Returns index of VM or -1 if not found */ 2088static int 2089KnownVMIndex(const char* name) 2090{ 2091 int i; 2092 if (JLI_StrCCmp(name, "-J") == 0) name += 2; 2093 for (i = 0; i < knownVMsCount; i++) { 2094 if (!JLI_StrCmp(name, knownVMs[i].name)) { 2095 return i; 2096 } 2097 } 2098 return -1; 2099} 2100 2101static void 2102FreeKnownVMs() 2103{ 2104 int i; 2105 for (i = 0; i < knownVMsCount; i++) { 2106 JLI_MemFree(knownVMs[i].name); 2107 knownVMs[i].name = NULL; 2108 } 2109 JLI_MemFree(knownVMs); 2110} 2111 2112/* 2113 * Displays the splash screen according to the jar file name 2114 * and image file names stored in environment variables 2115 */ 2116void 2117ShowSplashScreen() 2118{ 2119 const char *jar_name = getenv(SPLASH_JAR_ENV_ENTRY); 2120 const char *file_name = getenv(SPLASH_FILE_ENV_ENTRY); 2121 int data_size; 2122 void *image_data = NULL; 2123 float scale_factor = 1; 2124 char *scaled_splash_name = NULL; 2125 jboolean isImageScaled = JNI_FALSE; 2126 size_t maxScaledImgNameLength = 0; 2127 if (file_name == NULL){ 2128 return; 2129 } 2130 maxScaledImgNameLength = DoSplashGetScaledImgNameMaxPstfixLen(file_name); 2131 2132 scaled_splash_name = JLI_MemAlloc( 2133 maxScaledImgNameLength * sizeof(char)); 2134 isImageScaled = DoSplashGetScaledImageName(jar_name, file_name, 2135 &scale_factor, 2136 scaled_splash_name, maxScaledImgNameLength); 2137 if (jar_name) { 2138 2139 if (isImageScaled) { 2140 image_data = JLI_JarUnpackFile( 2141 jar_name, scaled_splash_name, &data_size); 2142 } 2143 2144 if (!image_data) { 2145 scale_factor = 1; 2146 image_data = JLI_JarUnpackFile( 2147 jar_name, file_name, &data_size); 2148 } 2149 if (image_data) { 2150 DoSplashInit(); 2151 DoSplashSetScaleFactor(scale_factor); 2152 DoSplashLoadMemory(image_data, data_size); 2153 JLI_MemFree(image_data); 2154 } 2155 } else { 2156 DoSplashInit(); 2157 if (isImageScaled) { 2158 DoSplashSetScaleFactor(scale_factor); 2159 DoSplashLoadFile(scaled_splash_name); 2160 } else { 2161 DoSplashLoadFile(file_name); 2162 } 2163 } 2164 JLI_MemFree(scaled_splash_name); 2165 2166 DoSplashSetFileJarName(file_name, jar_name); 2167 2168 /* 2169 * Done with all command line processing and potential re-execs so 2170 * clean up the environment. 2171 */ 2172 (void)UnsetEnv(ENV_ENTRY); 2173 (void)UnsetEnv(SPLASH_FILE_ENV_ENTRY); 2174 (void)UnsetEnv(SPLASH_JAR_ENV_ENTRY); 2175 2176 JLI_MemFree(splash_jar_entry); 2177 JLI_MemFree(splash_file_entry); 2178 2179} 2180 2181const char* 2182GetFullVersion() 2183{ 2184 return _fVersion; 2185} 2186 2187const char* 2188GetProgramName() 2189{ 2190 return _program_name; 2191} 2192 2193const char* 2194GetLauncherName() 2195{ 2196 return _launcher_name; 2197} 2198 2199jboolean 2200IsJavaArgs() 2201{ 2202 return _is_java_args; 2203} 2204 2205static jboolean 2206IsWildCardEnabled() 2207{ 2208 return _wc_enabled; 2209} 2210 2211int 2212ContinueInNewThread(InvocationFunctions* ifn, jlong threadStackSize, 2213 int argc, char **argv, 2214 int mode, char *what, int ret) 2215{ 2216 2217 /* 2218 * If user doesn't specify stack size, check if VM has a preference. 2219 * Note that HotSpot no longer supports JNI_VERSION_1_1 but it will 2220 * return its default stack size through the init args structure. 2221 */ 2222 if (threadStackSize == 0) { 2223 struct JDK1_1InitArgs args1_1; 2224 memset((void*)&args1_1, 0, sizeof(args1_1)); 2225 args1_1.version = JNI_VERSION_1_1; 2226 ifn->GetDefaultJavaVMInitArgs(&args1_1); /* ignore return value */ 2227 if (args1_1.javaStackSize > 0) { 2228 threadStackSize = args1_1.javaStackSize; 2229 } 2230 } 2231 2232 { /* Create a new thread to create JVM and invoke main method */ 2233 JavaMainArgs args; 2234 int rslt; 2235 2236 args.argc = argc; 2237 args.argv = argv; 2238 args.mode = mode; 2239 args.what = what; 2240 args.ifn = *ifn; 2241 2242 rslt = ContinueInNewThread0(JavaMain, threadStackSize, (void*)&args); 2243 /* If the caller has deemed there is an error we 2244 * simply return that, otherwise we return the value of 2245 * the callee 2246 */ 2247 return (ret != 0) ? ret : rslt; 2248 } 2249} 2250 2251static void 2252DumpState() 2253{ 2254 if (!JLI_IsTraceLauncher()) return ; 2255 printf("Launcher state:\n"); 2256 printf("\tFirst application arg index: %d\n", JLI_GetAppArgIndex()); 2257 printf("\tdebug:%s\n", (JLI_IsTraceLauncher() == JNI_TRUE) ? "on" : "off"); 2258 printf("\tjavargs:%s\n", (_is_java_args == JNI_TRUE) ? "on" : "off"); 2259 printf("\tprogram name:%s\n", GetProgramName()); 2260 printf("\tlauncher name:%s\n", GetLauncherName()); 2261 printf("\tjavaw:%s\n", (IsJavaw() == JNI_TRUE) ? "on" : "off"); 2262 printf("\tfullversion:%s\n", GetFullVersion()); 2263} 2264 2265/* 2266 * Return JNI_TRUE for an option string that has no effect but should 2267 * _not_ be passed on to the vm; return JNI_FALSE otherwise. On 2268 * Solaris SPARC, this screening needs to be done if: 2269 * -d32 or -d64 is passed to a binary with an unmatched data model 2270 * (the exec in CreateExecutionEnvironment removes -d<n> options and points the 2271 * exec to the proper binary). In the case of when the data model and the 2272 * requested version is matched, an exec would not occur, and these options 2273 * were erroneously passed to the vm. 2274 */ 2275jboolean 2276RemovableOption(char * option) 2277{ 2278 /* 2279 * Unconditionally remove both -d32 and -d64 options since only 2280 * the last such options has an effect; e.g. 2281 * java -d32 -d64 -d32 -version 2282 * is equivalent to 2283 * java -d32 -version 2284 */ 2285 2286 if( (JLI_StrCCmp(option, "-d32") == 0 ) || 2287 (JLI_StrCCmp(option, "-d64") == 0 ) ) 2288 return JNI_TRUE; 2289 else 2290 return JNI_FALSE; 2291} 2292 2293/* 2294 * A utility procedure to always print to stderr 2295 */ 2296void 2297JLI_ReportMessage(const char* fmt, ...) 2298{ 2299 va_list vl; 2300 va_start(vl, fmt); 2301 vfprintf(stderr, fmt, vl); 2302 fprintf(stderr, "\n"); 2303 va_end(vl); 2304} 2305 2306/* 2307 * A utility procedure to always print to stdout 2308 */ 2309void 2310JLI_ShowMessage(const char* fmt, ...) 2311{ 2312 va_list vl; 2313 va_start(vl, fmt); 2314 vfprintf(stdout, fmt, vl); 2315 fprintf(stdout, "\n"); 2316 va_end(vl); 2317} 2318