Mercurial > hg > truffle
view src/share/tools/launcher/java.c @ 4902:f174909614bd
Merge
author | bpittore |
---|---|
date | Fri, 10 Feb 2012 10:55:15 -0500 |
parents | aa6e219afbf1 |
children | 203f64878aab |
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/* * Copyright (c) 1999, 2010, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. * */ /* * Gamma (Hotspot internal engineering test) launcher based on 6.0u22 JDK, * search "GAMMA" for gamma specific changes. * * GAMMA: gamma launcher is much simpler than regular java launcher in that * JVM is either statically linked in or it is installed in the * same directory where the launcher exists, so we don't have to * worry about choosing the right JVM based on command line flag, jar * file and/or ergonomics. Intead of removing unused logic from source * they are commented out with #ifndef GAMMA, hopefully it'll be easier * to maintain this file in sync with regular JDK launcher. */ /* * Shared source for 'java' command line tool. * * If JAVA_ARGS is defined, then acts as a launcher for applications. For * instance, the JDK command line tools such as javac and javadoc (see * makefiles for more details) are built with this program. Any arguments * prefixed with '-J' will be passed directly to the 'java' command. */ #ifdef GAMMA # ifdef JAVA_ARGS # error Do NOT define JAVA_ARGS when building gamma launcher # endif # if !defined(LINK_INTO_AOUT) && !defined(LINK_INTO_LIBJVM) # error Either LINK_INTO_AOUT or LINK_INTO_LIBJVM must be defined # endif #endif /* * One job of the launcher is to remove command line options which the * vm does not understand and will not process. These options include * options which select which style of vm is run (e.g. -client and * -server) as well as options which select the data model to use. * Additionally, for tools which invoke an underlying vm "-J-foo" * options are turned into "-foo" options to the vm. This option * filtering is handled in a number of places in the launcher, some of * it in machine-dependent code. In this file, the function * CheckJVMType removes vm style options and TranslateApplicationArgs * removes "-J" prefixes. On unix platforms, the * CreateExecutionEnvironment function from the unix java_md.c file * processes and removes -d<n> options. However, in case * CreateExecutionEnvironment does not need to exec because * LD_LIBRARY_PATH is set acceptably and the data model does not need * to be changed, ParseArguments will screen out the redundant -d<n> * options and prevent them from being passed to the vm; this is done * by using the machine-dependent call * RemovableMachineDependentOption. */ #include <stdio.h> #include <stdlib.h> #include <string.h> #include <jni.h> #include <jvm.h> #include "java.h" #ifndef GAMMA #include "manifest_info.h" #include "version_comp.h" #include "splashscreen.h" #endif #include "wildcard.h" #ifndef FULL_VERSION #define FULL_VERSION JDK_MAJOR_VERSION "." JDK_MINOR_VERSION #endif /* * The following environment variable is used to influence the behavior * of the jre exec'd through the SelectVersion routine. The command line * options which specify the version are not passed to the exec'd version, * because that jre may be an older version which wouldn't recognize them. * This environment variable is known to this (and later) version and serves * to suppress the version selection code. This is not only for efficiency, * but also for correctness, since any command line options have been * removed which would cause any value found in the manifest to be used. * This would be incorrect because the command line options are defined * to take precedence. * * The value associated with this environment variable is the MainClass * name from within the executable jar file (if any). This is strictly a * performance enhancement to avoid re-reading the jar file manifest. * * A NOTE TO DEVELOPERS: For performance reasons it is important that * the program image remain relatively small until after SelectVersion * CreateExecutionEnvironment have finished their possibly recursive * processing. Watch everything, but resist all temptations to use Java * interfaces. */ #define ENV_ENTRY "_JAVA_VERSION_SET" #ifndef GAMMA #define SPLASH_FILE_ENV_ENTRY "_JAVA_SPLASH_FILE" #define SPLASH_JAR_ENV_ENTRY "_JAVA_SPLASH_JAR" #endif static jboolean printVersion = JNI_FALSE; /* print and exit */ static jboolean showVersion = JNI_FALSE; /* print but continue */ static char *progname; jboolean _launcher_debug = JNI_FALSE; #ifndef GAMMA /* * Entries for splash screen environment variables. * putenv is performed in SelectVersion. We need * them in memory until UnsetEnv, so they are made static * global instead of auto local. */ static char* splash_file_entry = NULL; static char* splash_jar_entry = NULL; #endif /* * List of VM options to be specified when the VM is created. */ static JavaVMOption *options; static int numOptions, maxOptions; /* * Prototypes for functions internal to launcher. */ static void SetClassPath(const char *s); static void SelectVersion(int argc, char **argv, char **main_class); static jboolean ParseArguments(int *pargc, char ***pargv, char **pjarfile, char **pclassname, int *pret, const char *jvmpath); static jboolean InitializeJVM(JavaVM **pvm, JNIEnv **penv, InvocationFunctions *ifn); static jstring NewPlatformString(JNIEnv *env, char *s); static jobjectArray NewPlatformStringArray(JNIEnv *env, char **strv, int strc); static jclass LoadClass(JNIEnv *env, char *name); static jstring GetMainClassName(JNIEnv *env, char *jarname); static void SetJavaCommandLineProp(char* classname, char* jarfile, int argc, char** argv); static void SetJavaLauncherProp(void); #ifdef JAVA_ARGS static void TranslateApplicationArgs(int *pargc, char ***pargv); static jboolean AddApplicationOptions(void); #endif static void PrintJavaVersion(JNIEnv *env); static void PrintUsage(void); static jint PrintXUsage(const char *jvmpath); static void SetPaths(int argc, char **argv); #ifndef GAMMA /* Maximum supported entries from jvm.cfg. */ #define INIT_MAX_KNOWN_VMS 10 /* Values for vmdesc.flag */ #define VM_UNKNOWN -1 #define VM_KNOWN 0 #define VM_ALIASED_TO 1 #define VM_WARN 2 #define VM_ERROR 3 #define VM_IF_SERVER_CLASS 4 #define VM_IGNORE 5 struct vmdesc { char *name; int flag; char *alias; char *server_class; }; static struct vmdesc *knownVMs = NULL; static int knownVMsCount = 0; static int knownVMsLimit = 0; static void GrowKnownVMs(); static int KnownVMIndex(const char* name); static void FreeKnownVMs(); static void ShowSplashScreen(); #endif /* ifndef GAMMA */ jboolean ServerClassMachine(); /* flag which if set suppresses error messages from the launcher */ static int noExitErrorMessage = 0; /* * Running Java code in primordial thread caused many problems. We will * create a new thread to invoke JVM. See 6316197 for more information. */ static jlong threadStackSize = 0; /* stack size of the new thread */ int JNICALL JavaMain(void * args); /* entry point */ struct JavaMainArgs { int argc; char ** argv; char * jarfile; char * classname; InvocationFunctions ifn; }; /* * Entry point. */ int main(int argc, char ** argv) { char *jarfile = 0; char *classname = 0; char *s = 0; char *main_class = NULL; int ret; InvocationFunctions ifn; jlong start, end; char jrepath[MAXPATHLEN], jvmpath[MAXPATHLEN]; char ** original_argv = argv; if (getenv("_JAVA_LAUNCHER_DEBUG") != 0) { _launcher_debug = JNI_TRUE; printf("----_JAVA_LAUNCHER_DEBUG----\n"); } #ifndef GAMMA /* * Make sure the specified version of the JRE is running. * * There are three things to note about the SelectVersion() routine: * 1) If the version running isn't correct, this routine doesn't * return (either the correct version has been exec'd or an error * was issued). * 2) Argc and Argv in this scope are *not* altered by this routine. * It is the responsibility of subsequent code to ignore the * arguments handled by this routine. * 3) As a side-effect, the variable "main_class" is guaranteed to * be set (if it should ever be set). This isn't exactly the * poster child for structured programming, but it is a small * price to pay for not processing a jar file operand twice. * (Note: This side effect has been disabled. See comment on * bugid 5030265 below.) */ SelectVersion(argc, argv, &main_class); #endif /* ifndef GAMMA */ /* copy original argv */ { int i; original_argv = (char**)JLI_MemAlloc(sizeof(char*)*(argc+1)); for(i = 0; i < argc+1; i++) original_argv[i] = argv[i]; } CreateExecutionEnvironment(&argc, &argv, jrepath, sizeof(jrepath), jvmpath, sizeof(jvmpath), original_argv); printf("Using java runtime at: %s\n", jrepath); ifn.CreateJavaVM = 0; ifn.GetDefaultJavaVMInitArgs = 0; if (_launcher_debug) start = CounterGet(); if (!LoadJavaVM(jvmpath, &ifn)) { exit(6); } if (_launcher_debug) { end = CounterGet(); printf("%ld micro seconds to LoadJavaVM\n", (long)(jint)Counter2Micros(end-start)); } #ifdef JAVA_ARGS /* javac, jar and friends. */ progname = "java"; #else /* java, oldjava, javaw and friends */ #ifdef PROGNAME progname = PROGNAME; #else progname = *argv; if ((s = strrchr(progname, FILE_SEPARATOR)) != 0) { progname = s + 1; } #endif /* PROGNAME */ #endif /* JAVA_ARGS */ ++argv; --argc; #ifdef JAVA_ARGS /* Preprocess wrapper arguments */ TranslateApplicationArgs(&argc, &argv); if (!AddApplicationOptions()) { exit(1); } #endif /* Set default CLASSPATH */ if ((s = getenv("CLASSPATH")) == 0) { s = "."; } #ifndef JAVA_ARGS SetClassPath(s); #endif /* * Parse command line options; if the return value of * ParseArguments is false, the program should exit. */ if (!ParseArguments(&argc, &argv, &jarfile, &classname, &ret, jvmpath)) { exit(ret); } /* Override class path if -jar flag was specified */ if (jarfile != 0) { SetClassPath(jarfile); } /* set the -Dsun.java.command pseudo property */ SetJavaCommandLineProp(classname, jarfile, argc, argv); /* Set the -Dsun.java.launcher pseudo property */ SetJavaLauncherProp(); /* set the -Dsun.java.launcher.* platform properties */ SetJavaLauncherPlatformProps(); #ifndef GAMMA /* Show the splash screen if needed */ ShowSplashScreen(); #endif /* * Done with all command line processing and potential re-execs so * clean up the environment. */ (void)UnsetEnv(ENV_ENTRY); #ifndef GAMMA (void)UnsetEnv(SPLASH_FILE_ENV_ENTRY); (void)UnsetEnv(SPLASH_JAR_ENV_ENTRY); JLI_MemFree(splash_jar_entry); JLI_MemFree(splash_file_entry); #endif /* * If user doesn't specify stack size, check if VM has a preference. * Note that HotSpot no longer supports JNI_VERSION_1_1 but it will * return its default stack size through the init args structure. */ if (threadStackSize == 0) { struct JDK1_1InitArgs args1_1; memset((void*)&args1_1, 0, sizeof(args1_1)); args1_1.version = JNI_VERSION_1_1; ifn.GetDefaultJavaVMInitArgs(&args1_1); /* ignore return value */ if (args1_1.javaStackSize > 0) { threadStackSize = args1_1.javaStackSize; } } { /* Create a new thread to create JVM and invoke main method */ struct JavaMainArgs args; args.argc = argc; args.argv = argv; args.jarfile = jarfile; args.classname = classname; args.ifn = ifn; return ContinueInNewThread(JavaMain, threadStackSize, (void*)&args); } } int JNICALL JavaMain(void * _args) { struct JavaMainArgs *args = (struct JavaMainArgs *)_args; int argc = args->argc; char **argv = args->argv; char *jarfile = args->jarfile; char *classname = args->classname; InvocationFunctions ifn = args->ifn; JavaVM *vm = 0; JNIEnv *env = 0; jstring mainClassName; jclass mainClass; jmethodID mainID; jobjectArray mainArgs; int ret = 0; jlong start, end; /* * Error message to print or display; by default the message will * only be displayed in a window. */ char * message = "Fatal exception occurred. Program will exit."; jboolean messageDest = JNI_FALSE; /* Initialize the virtual machine */ if (_launcher_debug) start = CounterGet(); if (!InitializeJVM(&vm, &env, &ifn)) { ReportErrorMessage("Could not create the Java virtual machine.", JNI_TRUE); exit(1); } if (printVersion || showVersion) { PrintJavaVersion(env); if ((*env)->ExceptionOccurred(env)) { ReportExceptionDescription(env); goto leave; } if (printVersion) { ret = 0; message = NULL; goto leave; } if (showVersion) { fprintf(stderr, "\n"); } } /* If the user specified neither a class name nor a JAR file */ if (jarfile == 0 && classname == 0) { PrintUsage(); message = NULL; goto leave; } #ifndef GAMMA FreeKnownVMs(); /* after last possible PrintUsage() */ #endif if (_launcher_debug) { end = CounterGet(); printf("%ld micro seconds to InitializeJVM\n", (long)(jint)Counter2Micros(end-start)); } /* At this stage, argc/argv have the applications' arguments */ if (_launcher_debug) { int i = 0; printf("Main-Class is '%s'\n", classname ? classname : ""); printf("Apps' argc is %d\n", argc); for (; i < argc; i++) { printf(" argv[%2d] = '%s'\n", i, argv[i]); } } ret = 1; /* * Get the application's main class. * * See bugid 5030265. The Main-Class name has already been parsed * from the manifest, but not parsed properly for UTF-8 support. * Hence the code here ignores the value previously extracted and * uses the pre-existing code to reextract the value. This is * possibly an end of release cycle expedient. However, it has * also been discovered that passing some character sets through * the environment has "strange" behavior on some variants of * Windows. Hence, maybe the manifest parsing code local to the * launcher should never be enhanced. * * Hence, future work should either: * 1) Correct the local parsing code and verify that the * Main-Class attribute gets properly passed through * all environments, * 2) Remove the vestages of maintaining main_class through * the environment (and remove these comments). */ if (jarfile != 0) { mainClassName = GetMainClassName(env, jarfile); if ((*env)->ExceptionOccurred(env)) { ReportExceptionDescription(env); goto leave; } if (mainClassName == NULL) { const char * format = "Failed to load Main-Class manifest " "attribute from\n%s"; message = (char*)JLI_MemAlloc((strlen(format) + strlen(jarfile)) * sizeof(char)); sprintf(message, format, jarfile); messageDest = JNI_TRUE; goto leave; } classname = (char *)(*env)->GetStringUTFChars(env, mainClassName, 0); if (classname == NULL) { ReportExceptionDescription(env); goto leave; } mainClass = LoadClass(env, classname); if(mainClass == NULL) { /* exception occured */ const char * format = "Could not find the main class: %s. Program will exit."; ReportExceptionDescription(env); message = (char *)JLI_MemAlloc((strlen(format) + strlen(classname)) * sizeof(char) ); messageDest = JNI_TRUE; sprintf(message, format, classname); goto leave; } (*env)->ReleaseStringUTFChars(env, mainClassName, classname); } else { mainClassName = NewPlatformString(env, classname); if (mainClassName == NULL) { const char * format = "Failed to load Main Class: %s"; message = (char *)JLI_MemAlloc((strlen(format) + strlen(classname)) * sizeof(char) ); sprintf(message, format, classname); messageDest = JNI_TRUE; goto leave; } classname = (char *)(*env)->GetStringUTFChars(env, mainClassName, 0); if (classname == NULL) { ReportExceptionDescription(env); goto leave; } mainClass = LoadClass(env, classname); if(mainClass == NULL) { /* exception occured */ const char * format = "Could not find the main class: %s. Program will exit."; ReportExceptionDescription(env); message = (char *)JLI_MemAlloc((strlen(format) + strlen(classname)) * sizeof(char) ); messageDest = JNI_TRUE; sprintf(message, format, classname); goto leave; } (*env)->ReleaseStringUTFChars(env, mainClassName, classname); } /* Get the application's main method */ mainID = (*env)->GetStaticMethodID(env, mainClass, "main", "([Ljava/lang/String;)V"); if (mainID == NULL) { if ((*env)->ExceptionOccurred(env)) { ReportExceptionDescription(env); } else { message = "No main method found in specified class."; messageDest = JNI_TRUE; } goto leave; } { /* Make sure the main method is public */ jint mods; jmethodID mid; jobject obj = (*env)->ToReflectedMethod(env, mainClass, mainID, JNI_TRUE); if( obj == NULL) { /* exception occurred */ ReportExceptionDescription(env); goto leave; } mid = (*env)->GetMethodID(env, (*env)->GetObjectClass(env, obj), "getModifiers", "()I"); if ((*env)->ExceptionOccurred(env)) { ReportExceptionDescription(env); goto leave; } mods = (*env)->CallIntMethod(env, obj, mid); if ((mods & 1) == 0) { /* if (!Modifier.isPublic(mods)) ... */ message = "Main method not public."; messageDest = JNI_TRUE; goto leave; } } /* Build argument array */ mainArgs = NewPlatformStringArray(env, argv, argc); if (mainArgs == NULL) { ReportExceptionDescription(env); goto leave; } /* Invoke main method. */ (*env)->CallStaticVoidMethod(env, mainClass, mainID, mainArgs); /* * The launcher's exit code (in the absence of calls to * System.exit) will be non-zero if main threw an exception. */ ret = (*env)->ExceptionOccurred(env) == NULL ? 0 : 1; /* * Detach the main thread so that it appears to have ended when * the application's main method exits. This will invoke the * uncaught exception handler machinery if main threw an * exception. An uncaught exception handler cannot change the * launcher's return code except by calling System.exit. */ if ((*vm)->DetachCurrentThread(vm) != 0) { message = "Could not detach main thread."; messageDest = JNI_TRUE; ret = 1; goto leave; } message = NULL; leave: /* * Wait for all non-daemon threads to end, then destroy the VM. * This will actually create a trivial new Java waiter thread * named "DestroyJavaVM", but this will be seen as a different * thread from the one that executed main, even though they are * the same C thread. This allows mainThread.join() and * mainThread.isAlive() to work as expected. */ (*vm)->DestroyJavaVM(vm); if(message != NULL && !noExitErrorMessage) ReportErrorMessage(message, messageDest); return ret; } #ifndef GAMMA /* * Checks the command line options to find which JVM type was * specified. If no command line option was given for the JVM type, * the default type is used. The environment variable * JDK_ALTERNATE_VM and the command line option -XXaltjvm= are also * checked as ways of specifying which JVM type to invoke. */ char * CheckJvmType(int *pargc, char ***argv, jboolean speculative) { int i, argi; int argc; char **newArgv; int newArgvIdx = 0; int isVMType; int jvmidx = -1; char *jvmtype = getenv("JDK_ALTERNATE_VM"); argc = *pargc; /* To make things simpler we always copy the argv array */ newArgv = JLI_MemAlloc((argc + 1) * sizeof(char *)); /* The program name is always present */ newArgv[newArgvIdx++] = (*argv)[0]; for (argi = 1; argi < argc; argi++) { char *arg = (*argv)[argi]; isVMType = 0; #ifdef JAVA_ARGS if (arg[0] != '-') { newArgv[newArgvIdx++] = arg; continue; } #else if (strcmp(arg, "-classpath") == 0 || strcmp(arg, "-cp") == 0) { newArgv[newArgvIdx++] = arg; argi++; if (argi < argc) { newArgv[newArgvIdx++] = (*argv)[argi]; } continue; } if (arg[0] != '-') break; #endif /* Did the user pass an explicit VM type? */ i = KnownVMIndex(arg); if (i >= 0) { jvmtype = knownVMs[jvmidx = i].name + 1; /* skip the - */ isVMType = 1; *pargc = *pargc - 1; } /* Did the user specify an "alternate" VM? */ else if (strncmp(arg, "-XXaltjvm=", 10) == 0 || strncmp(arg, "-J-XXaltjvm=", 12) == 0) { isVMType = 1; jvmtype = arg+((arg[1]=='X')? 10 : 12); jvmidx = -1; } if (!isVMType) { newArgv[newArgvIdx++] = arg; } } /* * Finish copying the arguments if we aborted the above loop. * NOTE that if we aborted via "break" then we did NOT copy the * last argument above, and in addition argi will be less than * argc. */ while (argi < argc) { newArgv[newArgvIdx++] = (*argv)[argi]; argi++; } /* argv is null-terminated */ newArgv[newArgvIdx] = 0; /* Copy back argv */ *argv = newArgv; *pargc = newArgvIdx; /* use the default VM type if not specified (no alias processing) */ if (jvmtype == NULL) { char* result = knownVMs[0].name+1; /* Use a different VM type if we are on a server class machine? */ if ((knownVMs[0].flag == VM_IF_SERVER_CLASS) && (ServerClassMachine() == JNI_TRUE)) { result = knownVMs[0].server_class+1; } if (_launcher_debug) { printf("Default VM: %s\n", result); } return result; } /* if using an alternate VM, no alias processing */ if (jvmidx < 0) return jvmtype; /* Resolve aliases first */ { int loopCount = 0; while (knownVMs[jvmidx].flag == VM_ALIASED_TO) { int nextIdx = KnownVMIndex(knownVMs[jvmidx].alias); if (loopCount > knownVMsCount) { if (!speculative) { ReportErrorMessage("Error: Corrupt jvm.cfg file; cycle in alias list.", JNI_TRUE); exit(1); } else { return "ERROR"; /* break; */ } } if (nextIdx < 0) { if (!speculative) { ReportErrorMessage2("Error: Unable to resolve VM alias %s", knownVMs[jvmidx].alias, JNI_TRUE); exit(1); } else { return "ERROR"; } } jvmidx = nextIdx; jvmtype = knownVMs[jvmidx].name+1; loopCount++; } } switch (knownVMs[jvmidx].flag) { case VM_WARN: if (!speculative) { fprintf(stderr, "Warning: %s VM not supported; %s VM will be used\n", jvmtype, knownVMs[0].name + 1); } /* fall through */ case VM_IGNORE: jvmtype = knownVMs[jvmidx=0].name + 1; /* fall through */ case VM_KNOWN: break; case VM_ERROR: if (!speculative) { ReportErrorMessage2("Error: %s VM not supported", jvmtype, JNI_TRUE); exit(1); } else { return "ERROR"; } } return jvmtype; } #endif /* ifndef GAMMA */ # define KB (1024UL) # define MB (1024UL * KB) # define GB (1024UL * MB) /* copied from HotSpot function "atomll()" */ static int parse_stack_size(const char *s, jlong *result) { jlong n = 0; int args_read = sscanf(s, jlong_format_specifier(), &n); if (args_read != 1) { return 0; } while (*s != '\0' && *s >= '0' && *s <= '9') { s++; } // 4705540: illegal if more characters are found after the first non-digit if (strlen(s) > 1) { return 0; } switch (*s) { case 'T': case 't': *result = n * GB * KB; return 1; case 'G': case 'g': *result = n * GB; return 1; case 'M': case 'm': *result = n * MB; return 1; case 'K': case 'k': *result = n * KB; return 1; case '\0': *result = n; return 1; default: /* Create JVM with default stack and let VM handle malformed -Xss string*/ return 0; } } /* * Adds a new VM option with the given given name and value. */ void AddOption(char *str, void *info) { /* * Expand options array if needed to accommodate at least one more * VM option. */ if (numOptions >= maxOptions) { if (options == 0) { maxOptions = 4; options = JLI_MemAlloc(maxOptions * sizeof(JavaVMOption)); } else { JavaVMOption *tmp; maxOptions *= 2; tmp = JLI_MemAlloc(maxOptions * sizeof(JavaVMOption)); memcpy(tmp, options, numOptions * sizeof(JavaVMOption)); JLI_MemFree(options); options = tmp; } } options[numOptions].optionString = str; options[numOptions++].extraInfo = info; if (strncmp(str, "-Xss", 4) == 0) { jlong tmp; if (parse_stack_size(str + 4, &tmp)) { threadStackSize = tmp; } } } static void SetClassPath(const char *s) { char *def; s = JLI_WildcardExpandClasspath(s); def = JLI_MemAlloc(strlen(s) + 40); sprintf(def, "-Djava.class.path=%s", s); AddOption(def, NULL); } #ifndef GAMMA /* * The SelectVersion() routine ensures that an appropriate version of * the JRE is running. The specification for the appropriate version * is obtained from either the manifest of a jar file (preferred) or * from command line options. * The routine also parses splash screen command line options and * passes on their values in private environment variables. */ static void SelectVersion(int argc, char **argv, char **main_class) { char *arg; char **new_argv; char **new_argp; char *operand; char *version = NULL; char *jre = NULL; int jarflag = 0; int headlessflag = 0; int restrict_search = -1; /* -1 implies not known */ manifest_info info; char env_entry[MAXNAMELEN + 24] = ENV_ENTRY "="; char *splash_file_name = NULL; char *splash_jar_name = NULL; char *env_in; int res; /* * If the version has already been selected, set *main_class * with the value passed through the environment (if any) and * simply return. */ if ((env_in = getenv(ENV_ENTRY)) != NULL) { if (*env_in != '\0') *main_class = JLI_StringDup(env_in); return; } /* * Scan through the arguments for options relevant to multiple JRE * support. For reference, the command line syntax is defined as: * * SYNOPSIS * java [options] class [argument...] * * java [options] -jar file.jar [argument...] * * As the scan is performed, make a copy of the argument list with * the version specification options (new to 1.5) removed, so that * a version less than 1.5 can be exec'd. * * Note that due to the syntax of the native Windows interface * CreateProcess(), processing similar to the following exists in * the Windows platform specific routine ExecJRE (in java_md.c). * Changes here should be reproduced there. */ new_argv = JLI_MemAlloc((argc + 1) * sizeof(char*)); new_argv[0] = argv[0]; new_argp = &new_argv[1]; argc--; argv++; while ((arg = *argv) != 0 && *arg == '-') { if (strncmp(arg, "-version:", 9) == 0) { version = arg + 9; } else if (strcmp(arg, "-jre-restrict-search") == 0) { restrict_search = 1; } else if (strcmp(arg, "-no-jre-restrict-search") == 0) { restrict_search = 0; } else { if (strcmp(arg, "-jar") == 0) jarflag = 1; /* deal with "unfortunate" classpath syntax */ if ((strcmp(arg, "-classpath") == 0 || strcmp(arg, "-cp") == 0) && (argc >= 2)) { *new_argp++ = arg; argc--; argv++; arg = *argv; } /* * Checking for headless toolkit option in the some way as AWT does: * "true" means true and any other value means false */ if (strcmp(arg, "-Djava.awt.headless=true") == 0) { headlessflag = 1; } else if (strncmp(arg, "-Djava.awt.headless=", 20) == 0) { headlessflag = 0; } else if (strncmp(arg, "-splash:", 8) == 0) { splash_file_name = arg+8; } *new_argp++ = arg; } argc--; argv++; } if (argc <= 0) { /* No operand? Possibly legit with -[full]version */ operand = NULL; } else { argc--; *new_argp++ = operand = *argv++; } while (argc-- > 0) /* Copy over [argument...] */ *new_argp++ = *argv++; *new_argp = NULL; /* * If there is a jar file, read the manifest. If the jarfile can't be * read, the manifest can't be read from the jar file, or the manifest * is corrupt, issue the appropriate error messages and exit. * * Even if there isn't a jar file, construct a manifest_info structure * containing the command line information. It's a convenient way to carry * this data around. */ if (jarflag && operand) { if ((res = JLI_ParseManifest(operand, &info)) != 0) { if (res == -1) ReportErrorMessage2("Unable to access jarfile %s", operand, JNI_TRUE); else ReportErrorMessage2("Invalid or corrupt jarfile %s", operand, JNI_TRUE); exit(1); } /* * Command line splash screen option should have precedence * over the manifest, so the manifest data is used only if * splash_file_name has not been initialized above during command * line parsing */ if (!headlessflag && !splash_file_name && info.splashscreen_image_file_name) { splash_file_name = info.splashscreen_image_file_name; splash_jar_name = operand; } } else { info.manifest_version = NULL; info.main_class = NULL; info.jre_version = NULL; info.jre_restrict_search = 0; } /* * Passing on splash screen info in environment variables */ if (splash_file_name && !headlessflag) { char* splash_file_entry = JLI_MemAlloc(strlen(SPLASH_FILE_ENV_ENTRY "=")+strlen(splash_file_name)+1); strcpy(splash_file_entry, SPLASH_FILE_ENV_ENTRY "="); strcat(splash_file_entry, splash_file_name); putenv(splash_file_entry); } if (splash_jar_name && !headlessflag) { char* splash_jar_entry = JLI_MemAlloc(strlen(SPLASH_JAR_ENV_ENTRY "=")+strlen(splash_jar_name)+1); strcpy(splash_jar_entry, SPLASH_JAR_ENV_ENTRY "="); strcat(splash_jar_entry, splash_jar_name); putenv(splash_jar_entry); } /* * The JRE-Version and JRE-Restrict-Search values (if any) from the * manifest are overwritten by any specified on the command line. */ if (version != NULL) info.jre_version = version; if (restrict_search != -1) info.jre_restrict_search = restrict_search; /* * "Valid" returns (other than unrecoverable errors) follow. Set * main_class as a side-effect of this routine. */ if (info.main_class != NULL) *main_class = JLI_StringDup(info.main_class); /* * If no version selection information is found either on the command * line or in the manifest, simply return. */ if (info.jre_version == NULL) { JLI_FreeManifest(); JLI_MemFree(new_argv); return; } /* * Check for correct syntax of the version specification (JSR 56). */ if (!JLI_ValidVersionString(info.jre_version)) { ReportErrorMessage2("Syntax error in version specification \"%s\"", info.jre_version, JNI_TRUE); exit(1); } /* * Find the appropriate JVM on the system. Just to be as forgiving as * possible, if the standard algorithms don't locate an appropriate * jre, check to see if the one running will satisfy the requirements. * This can happen on systems which haven't been set-up for multiple * JRE support. */ jre = LocateJRE(&info); if (_launcher_debug) printf("JRE-Version = %s, JRE-Restrict-Search = %s Selected = %s\n", (info.jre_version?info.jre_version:"null"), (info.jre_restrict_search?"true":"false"), (jre?jre:"null")); if (jre == NULL) { if (JLI_AcceptableRelease(FULL_VERSION, info.jre_version)) { JLI_FreeManifest(); JLI_MemFree(new_argv); return; } else { ReportErrorMessage2( "Unable to locate JRE meeting specification \"%s\"", info.jre_version, JNI_TRUE); exit(1); } } /* * If I'm not the chosen one, exec the chosen one. Returning from * ExecJRE indicates that I am indeed the chosen one. * * The private environment variable _JAVA_VERSION_SET is used to * prevent the chosen one from re-reading the manifest file and * using the values found within to override the (potential) command * line flags stripped from argv (because the target may not * understand them). Passing the MainClass value is an optimization * to avoid locating, expanding and parsing the manifest extra * times. */ if (info.main_class != NULL) { if (strlen(info.main_class) <= MAXNAMELEN) { (void)strcat(env_entry, info.main_class); } else { ReportErrorMessage("Error: main-class: attribute exceeds system limits\n", JNI_TRUE); exit(1); } } (void)putenv(env_entry); ExecJRE(jre, new_argv); JLI_FreeManifest(); JLI_MemFree(new_argv); return; } #endif /* ifndef GAMMA */ /* * Parses command line arguments. Returns JNI_FALSE if launcher * should exit without starting vm (e.g. certain version and usage * options); returns JNI_TRUE if vm needs to be started to process * given options. *pret (the launcher process return value) is set to * 0 for a normal exit. */ static jboolean ParseArguments(int *pargc, char ***pargv, char **pjarfile, char **pclassname, int *pret, const char *jvmpath) { int argc = *pargc; char **argv = *pargv; jboolean jarflag = JNI_FALSE; char *arg; *pret = 1; while ((arg = *argv) != 0 && *arg == '-') { argv++; --argc; if (strcmp(arg, "-classpath") == 0 || strcmp(arg, "-cp") == 0) { if (argc < 1) { ReportErrorMessage2("%s requires class path specification", arg, JNI_TRUE); PrintUsage(); return JNI_FALSE; } SetClassPath(*argv); argv++; --argc; } else if (strcmp(arg, "-jar") == 0) { jarflag = JNI_TRUE; } else if (strcmp(arg, "-help") == 0 || strcmp(arg, "-h") == 0 || strcmp(arg, "-?") == 0) { PrintUsage(); *pret = 0; return JNI_FALSE; } else if (strcmp(arg, "-version") == 0) { printVersion = JNI_TRUE; return JNI_TRUE; } else if (strcmp(arg, "-showversion") == 0) { showVersion = JNI_TRUE; } else if (strcmp(arg, "-X") == 0) { *pret = PrintXUsage(jvmpath); return JNI_FALSE; /* * The following case provide backward compatibility with old-style * command line options. */ } else if (strcmp(arg, "-fullversion") == 0) { fprintf(stderr, "%s full version \"%s\"\n", progname, FULL_VERSION); *pret = 0; return JNI_FALSE; } else if (strcmp(arg, "-verbosegc") == 0) { AddOption("-verbose:gc", NULL); } else if (strcmp(arg, "-t") == 0) { AddOption("-Xt", NULL); } else if (strcmp(arg, "-tm") == 0) { AddOption("-Xtm", NULL); } else if (strcmp(arg, "-debug") == 0) { AddOption("-Xdebug", NULL); } else if (strcmp(arg, "-noclassgc") == 0) { AddOption("-Xnoclassgc", NULL); } else if (strcmp(arg, "-Xfuture") == 0) { AddOption("-Xverify:all", NULL); } else if (strcmp(arg, "-verify") == 0) { AddOption("-Xverify:all", NULL); } else if (strcmp(arg, "-verifyremote") == 0) { AddOption("-Xverify:remote", NULL); } else if (strcmp(arg, "-noverify") == 0) { AddOption("-Xverify:none", NULL); } else if (strcmp(arg, "-XXsuppressExitMessage") == 0) { noExitErrorMessage = 1; } else if (strncmp(arg, "-prof", 5) == 0) { char *p = arg + 5; char *tmp = JLI_MemAlloc(strlen(arg) + 50); if (*p) { sprintf(tmp, "-Xrunhprof:cpu=old,file=%s", p + 1); } else { sprintf(tmp, "-Xrunhprof:cpu=old,file=java.prof"); } AddOption(tmp, NULL); } else if (strncmp(arg, "-ss", 3) == 0 || strncmp(arg, "-oss", 4) == 0 || strncmp(arg, "-ms", 3) == 0 || strncmp(arg, "-mx", 3) == 0) { char *tmp = JLI_MemAlloc(strlen(arg) + 6); sprintf(tmp, "-X%s", arg + 1); /* skip '-' */ AddOption(tmp, NULL); } else if (strcmp(arg, "-checksource") == 0 || strcmp(arg, "-cs") == 0 || strcmp(arg, "-noasyncgc") == 0) { /* No longer supported */ fprintf(stderr, "Warning: %s option is no longer supported.\n", arg); } else if (strncmp(arg, "-version:", 9) == 0 || strcmp(arg, "-no-jre-restrict-search") == 0 || strcmp(arg, "-jre-restrict-search") == 0 || strncmp(arg, "-splash:", 8) == 0) { ; /* Ignore machine independent options already handled */ } else if (RemovableMachineDependentOption(arg) ) { ; /* Do not pass option to vm. */ } else { AddOption(arg, NULL); } } if (--argc >= 0) { if (jarflag) { *pjarfile = *argv++; *pclassname = 0; } else { *pjarfile = 0; *pclassname = *argv++; } *pargc = argc; *pargv = argv; } return JNI_TRUE; } /* * Initializes the Java Virtual Machine. Also frees options array when * finished. */ static jboolean InitializeJVM(JavaVM **pvm, JNIEnv **penv, InvocationFunctions *ifn) { JavaVMInitArgs args; jint r; memset(&args, 0, sizeof(args)); args.version = JNI_VERSION_1_2; args.nOptions = numOptions; args.options = options; args.ignoreUnrecognized = JNI_FALSE; if (_launcher_debug) { int i = 0; printf("JavaVM args:\n "); printf("version 0x%08lx, ", (long)args.version); printf("ignoreUnrecognized is %s, ", args.ignoreUnrecognized ? "JNI_TRUE" : "JNI_FALSE"); printf("nOptions is %ld\n", (long)args.nOptions); for (i = 0; i < numOptions; i++) printf(" option[%2d] = '%s'\n", i, args.options[i].optionString); } r = ifn->CreateJavaVM(pvm, (void **)penv, &args); JLI_MemFree(options); return r == JNI_OK; } #define NULL_CHECK0(e) if ((e) == 0) return 0 #define NULL_CHECK(e) if ((e) == 0) return static jstring platformEncoding = NULL; static jstring getPlatformEncoding(JNIEnv *env) { if (platformEncoding == NULL) { jstring propname = (*env)->NewStringUTF(env, "sun.jnu.encoding"); if (propname) { jclass cls; jmethodID mid; NULL_CHECK0 (cls = (*env)->FindClass(env, "java/lang/System")); NULL_CHECK0 (mid = (*env)->GetStaticMethodID( env, cls, "getProperty", "(Ljava/lang/String;)Ljava/lang/String;")); platformEncoding = (*env)->CallStaticObjectMethod ( env, cls, mid, propname); } } return platformEncoding; } static jboolean isEncodingSupported(JNIEnv *env, jstring enc) { jclass cls; jmethodID mid; NULL_CHECK0 (cls = (*env)->FindClass(env, "java/nio/charset/Charset")); NULL_CHECK0 (mid = (*env)->GetStaticMethodID( env, cls, "isSupported", "(Ljava/lang/String;)Z")); return (*env)->CallStaticBooleanMethod(env, cls, mid, enc); } /* * Returns a new Java string object for the specified platform string. */ static jstring NewPlatformString(JNIEnv *env, char *s) { int len = (int)strlen(s); jclass cls; jmethodID mid; jbyteArray ary; jstring enc; if (s == NULL) return 0; enc = getPlatformEncoding(env); ary = (*env)->NewByteArray(env, len); if (ary != 0) { jstring str = 0; (*env)->SetByteArrayRegion(env, ary, 0, len, (jbyte *)s); if (!(*env)->ExceptionOccurred(env)) { if (isEncodingSupported(env, enc) == JNI_TRUE) { NULL_CHECK0(cls = (*env)->FindClass(env, "java/lang/String")); NULL_CHECK0(mid = (*env)->GetMethodID(env, cls, "<init>", "([BLjava/lang/String;)V")); str = (*env)->NewObject(env, cls, mid, ary, enc); } else { /*If the encoding specified in sun.jnu.encoding is not endorsed by "Charset.isSupported" we have to fall back to use String(byte[]) explicitly here without specifying the encoding name, in which the StringCoding class will pickup the iso-8859-1 as the fallback converter for us. */ NULL_CHECK0(cls = (*env)->FindClass(env, "java/lang/String")); NULL_CHECK0(mid = (*env)->GetMethodID(env, cls, "<init>", "([B)V")); str = (*env)->NewObject(env, cls, mid, ary); } (*env)->DeleteLocalRef(env, ary); return str; } } return 0; } /* * Returns a new array of Java string objects for the specified * array of platform strings. */ static jobjectArray NewPlatformStringArray(JNIEnv *env, char **strv, int strc) { jarray cls; jarray ary; int i; NULL_CHECK0(cls = (*env)->FindClass(env, "java/lang/String")); NULL_CHECK0(ary = (*env)->NewObjectArray(env, strc, cls, 0)); for (i = 0; i < strc; i++) { jstring str = NewPlatformString(env, *strv++); NULL_CHECK0(str); (*env)->SetObjectArrayElement(env, ary, i, str); (*env)->DeleteLocalRef(env, str); } return ary; } /* * Loads a class, convert the '.' to '/'. */ static jclass LoadClass(JNIEnv *env, char *name) { char *buf = JLI_MemAlloc(strlen(name) + 1); char *s = buf, *t = name, c; jclass cls; jlong start, end; if (_launcher_debug) start = CounterGet(); do { c = *t++; *s++ = (c == '.') ? '/' : c; } while (c != '\0'); cls = (*env)->FindClass(env, buf); JLI_MemFree(buf); if (_launcher_debug) { end = CounterGet(); printf("%ld micro seconds to load main class\n", (long)(jint)Counter2Micros(end-start)); printf("----_JAVA_LAUNCHER_DEBUG----\n"); } return cls; } /* * Returns the main class name for the specified jar file. */ static jstring GetMainClassName(JNIEnv *env, char *jarname) { #define MAIN_CLASS "Main-Class" jclass cls; jmethodID mid; jobject jar, man, attr; jstring str, result = 0; NULL_CHECK0(cls = (*env)->FindClass(env, "java/util/jar/JarFile")); NULL_CHECK0(mid = (*env)->GetMethodID(env, cls, "<init>", "(Ljava/lang/String;)V")); NULL_CHECK0(str = NewPlatformString(env, jarname)); NULL_CHECK0(jar = (*env)->NewObject(env, cls, mid, str)); NULL_CHECK0(mid = (*env)->GetMethodID(env, cls, "getManifest", "()Ljava/util/jar/Manifest;")); man = (*env)->CallObjectMethod(env, jar, mid); if (man != 0) { NULL_CHECK0(mid = (*env)->GetMethodID(env, (*env)->GetObjectClass(env, man), "getMainAttributes", "()Ljava/util/jar/Attributes;")); attr = (*env)->CallObjectMethod(env, man, mid); if (attr != 0) { NULL_CHECK0(mid = (*env)->GetMethodID(env, (*env)->GetObjectClass(env, attr), "getValue", "(Ljava/lang/String;)Ljava/lang/String;")); NULL_CHECK0(str = NewPlatformString(env, MAIN_CLASS)); result = (*env)->CallObjectMethod(env, attr, mid, str); } } return result; } #ifdef JAVA_ARGS static char *java_args[] = JAVA_ARGS; static char *app_classpath[] = APP_CLASSPATH; /* * For tools, convert command line args thus: * javac -cp foo:foo/"*" -J-ms32m ... * java -ms32m -cp JLI_WildcardExpandClasspath(foo:foo/"*") ... */ static void TranslateApplicationArgs(int *pargc, char ***pargv) { const int NUM_ARGS = (sizeof(java_args) / sizeof(char *)); int argc = *pargc; char **argv = *pargv; int nargc = argc + NUM_ARGS; char **nargv = JLI_MemAlloc((nargc + 1) * sizeof(char *)); int i; *pargc = nargc; *pargv = nargv; /* Copy the VM arguments (i.e. prefixed with -J) */ for (i = 0; i < NUM_ARGS; i++) { char *arg = java_args[i]; if (arg[0] == '-' && arg[1] == 'J') { *nargv++ = arg + 2; } } for (i = 0; i < argc; i++) { char *arg = argv[i]; if (arg[0] == '-' && arg[1] == 'J') { if (arg[2] == '\0') { ReportErrorMessage("Error: the -J option should not be " "followed by a space.", JNI_TRUE); exit(1); } *nargv++ = arg + 2; } } /* Copy the rest of the arguments */ for (i = 0; i < NUM_ARGS; i++) { char *arg = java_args[i]; if (arg[0] != '-' || arg[1] != 'J') { *nargv++ = arg; } } for (i = 0; i < argc; i++) { char *arg = argv[i]; if (arg[0] == '-') { if (arg[1] == 'J') continue; #ifdef EXPAND_CLASSPATH_WILDCARDS if (arg[1] == 'c' && (strcmp(arg, "-cp") == 0 || strcmp(arg, "-classpath") == 0) && i < argc - 1) { *nargv++ = arg; *nargv++ = (char *) JLI_WildcardExpandClasspath(argv[i+1]); i++; continue; } #endif } *nargv++ = arg; } *nargv = 0; } /* * For our tools, we try to add 3 VM options: * -Denv.class.path=<envcp> * -Dapplication.home=<apphome> * -Djava.class.path=<appcp> * <envcp> is the user's setting of CLASSPATH -- for instance the user * tells javac where to find binary classes through this environment * variable. Notice that users will be able to compile against our * tools classes (sun.tools.javac.Main) only if they explicitly add * tools.jar to CLASSPATH. * <apphome> is the directory where the application is installed. * <appcp> is the classpath to where our apps' classfiles are. */ static jboolean AddApplicationOptions() { const int NUM_APP_CLASSPATH = (sizeof(app_classpath) / sizeof(char *)); char *envcp, *appcp, *apphome; char home[MAXPATHLEN]; /* application home */ char separator[] = { PATH_SEPARATOR, '\0' }; int size, i; int strlenHome; { const char *s = getenv("CLASSPATH"); if (s) { s = (char *) JLI_WildcardExpandClasspath(s); /* 40 for -Denv.class.path= */ envcp = (char *)JLI_MemAlloc(strlen(s) + 40); sprintf(envcp, "-Denv.class.path=%s", s); AddOption(envcp, NULL); } } if (!GetApplicationHome(home, sizeof(home))) { ReportErrorMessage("Can't determine application home", JNI_TRUE); return JNI_FALSE; } /* 40 for '-Dapplication.home=' */ apphome = (char *)JLI_MemAlloc(strlen(home) + 40); sprintf(apphome, "-Dapplication.home=%s", home); AddOption(apphome, NULL); /* How big is the application's classpath? */ size = 40; /* 40: "-Djava.class.path=" */ strlenHome = (int)strlen(home); for (i = 0; i < NUM_APP_CLASSPATH; i++) { size += strlenHome + (int)strlen(app_classpath[i]) + 1; /* 1: separator */ } appcp = (char *)JLI_MemAlloc(size + 1); strcpy(appcp, "-Djava.class.path="); for (i = 0; i < NUM_APP_CLASSPATH; i++) { strcat(appcp, home); /* c:\program files\myapp */ strcat(appcp, app_classpath[i]); /* \lib\myapp.jar */ strcat(appcp, separator); /* ; */ } appcp[strlen(appcp)-1] = '\0'; /* remove trailing path separator */ AddOption(appcp, NULL); return JNI_TRUE; } #endif /* JAVA_ARGS */ /* * inject the -Dsun.java.command pseudo property into the args structure * this pseudo property is used in the HotSpot VM to expose the * Java class name and arguments to the main method to the VM. The * HotSpot VM uses this pseudo property to store the Java class name * (or jar file name) and the arguments to the class's main method * to the instrumentation memory region. The sun.java.command pseudo * property is not exported by HotSpot to the Java layer. */ void SetJavaCommandLineProp(char *classname, char *jarfile, int argc, char **argv) { int i = 0; size_t len = 0; char* javaCommand = NULL; char* dashDstr = "-Dsun.java.command="; if (classname == NULL && jarfile == NULL) { /* unexpected, one of these should be set. just return without * setting the property */ return; } /* if the class name is not set, then use the jarfile name */ if (classname == NULL) { classname = jarfile; } /* determine the amount of memory to allocate assuming * the individual components will be space separated */ len = strlen(classname); for (i = 0; i < argc; i++) { len += strlen(argv[i]) + 1; } /* allocate the memory */ javaCommand = (char*) JLI_MemAlloc(len + strlen(dashDstr) + 1); /* build the -D string */ *javaCommand = '\0'; strcat(javaCommand, dashDstr); strcat(javaCommand, classname); for (i = 0; i < argc; i++) { /* the components of the string are space separated. In * the case of embedded white space, the relationship of * the white space separated components to their true * positional arguments will be ambiguous. This issue may * be addressed in a future release. */ strcat(javaCommand, " "); strcat(javaCommand, argv[i]); } AddOption(javaCommand, NULL); } /* * JVM would like to know if it's created by a standard Sun launcher, or by * user native application, the following property indicates the former. */ void SetJavaLauncherProp() { AddOption("-Dsun.java.launcher=" LAUNCHER_TYPE, NULL); } /* * Prints the version information from the java.version and other properties. */ static void PrintJavaVersion(JNIEnv *env) { jclass ver; jmethodID print; NULL_CHECK(ver = (*env)->FindClass(env, "sun/misc/Version")); NULL_CHECK(print = (*env)->GetStaticMethodID(env, ver, "print", "()V")); (*env)->CallStaticVoidMethod(env, ver, print); } /* * Prints default usage message. */ static void PrintUsage(void) { #ifndef GAMMA int i; #endif fprintf(stdout, "Usage: %s [-options] class [args...]\n" " (to execute a class)\n" " or %s [-options] -jar jarfile [args...]\n" " (to execute a jar file)\n" "\n" "where options include:\n", progname, progname); #ifndef GAMMA PrintMachineDependentOptions(); if ((knownVMs[0].flag == VM_KNOWN) || (knownVMs[0].flag == VM_IF_SERVER_CLASS)) { fprintf(stdout, " %s\t to select the \"%s\" VM\n", knownVMs[0].name, knownVMs[0].name+1); } for (i=1; i<knownVMsCount; i++) { if (knownVMs[i].flag == VM_KNOWN) fprintf(stdout, " %s\t to select the \"%s\" VM\n", knownVMs[i].name, knownVMs[i].name+1); } for (i=1; i<knownVMsCount; i++) { if (knownVMs[i].flag == VM_ALIASED_TO) fprintf(stdout, " %s\t is a synonym for " "the \"%s\" VM [deprecated]\n", knownVMs[i].name, knownVMs[i].alias+1); } /* The first known VM is the default */ { const char* defaultVM = knownVMs[0].name+1; const char* punctuation = "."; const char* reason = ""; if ((knownVMs[0].flag == VM_IF_SERVER_CLASS) && (ServerClassMachine() == JNI_TRUE)) { defaultVM = knownVMs[0].server_class+1; punctuation = ", "; reason = "because you are running on a server-class machine.\n"; } fprintf(stdout, " The default VM is %s%s\n", defaultVM, punctuation); fprintf(stdout, " %s\n", reason); } #endif /* ifndef GAMMA */ fprintf(stdout, " -cp <class search path of directories and zip/jar files>\n" " -classpath <class search path of directories and zip/jar files>\n" " A %c separated list of directories, JAR archives,\n" " and ZIP archives to search for class files.\n" " -D<name>=<value>\n" " set a system property\n" " -verbose[:class|gc|jni]\n" " enable verbose output\n" " -version print product version and exit\n" " -version:<value>\n" " require the specified version to run\n" " -showversion print product version and continue\n" " -jre-restrict-search | -jre-no-restrict-search\n" " include/exclude user private JREs in the version search\n" " -? -help print this help message\n" " -X print help on non-standard options\n" " -ea[:<packagename>...|:<classname>]\n" " -enableassertions[:<packagename>...|:<classname>]\n" " enable assertions\n" " -da[:<packagename>...|:<classname>]\n" " -disableassertions[:<packagename>...|:<classname>]\n" " disable assertions\n" " -esa | -enablesystemassertions\n" " enable system assertions\n" " -dsa | -disablesystemassertions\n" " disable system assertions\n" " -agentlib:<libname>[=<options>]\n" " load native agent library <libname>, e.g. -agentlib:hprof\n" " see also, -agentlib:jdwp=help and -agentlib:hprof=help\n" " -agentpath:<pathname>[=<options>]\n" " load native agent library by full pathname\n" " -javaagent:<jarpath>[=<options>]\n" " load Java programming language agent, see java.lang.instrument\n" " -splash:<imagepath>\n" " show splash screen with specified image\n" ,PATH_SEPARATOR); } /* * Print usage message for -X options. */ static jint PrintXUsage(const char *jvmpath) { /* A 32 bit cushion to prevent buffer overrun, noting that fopen(3C) may fail if the buffer exceeds MAXPATHLEN. */ char path[MAXPATHLEN+32]; char buf[128]; size_t n; FILE *fp; static const char Xusage_txt[] = "/Xusage.txt"; strcpy(path, jvmpath); /* Note the FILE_SEPARATOR is platform dependent */ strcpy(strrchr(path, FILE_SEPARATOR), Xusage_txt); fp = fopen(path, "r"); if (fp == 0) { fprintf(stderr, "Can't open %s\n", path); return 1; } while ((n = fread(buf, 1, sizeof(buf), fp)) != 0) { fwrite(buf, 1, n, stdout); } fclose(fp); return 0; } #ifndef GAMMA /* * Read the jvm.cfg file and fill the knownJVMs[] array. * * The functionality of the jvm.cfg file is subject to change without * notice and the mechanism will be removed in the future. * * The lexical structure of the jvm.cfg file is as follows: * * jvmcfg := { vmLine } * vmLine := knownLine * | aliasLine * | warnLine * | ignoreLine * | errorLine * | predicateLine * | commentLine * knownLine := flag "KNOWN" EOL * warnLine := flag "WARN" EOL * ignoreLine := flag "IGNORE" EOL * errorLine := flag "ERROR" EOL * aliasLine := flag "ALIASED_TO" flag EOL * predicateLine := flag "IF_SERVER_CLASS" flag EOL * commentLine := "#" text EOL * flag := "-" identifier * * The semantics are that when someone specifies a flag on the command line: * - if the flag appears on a knownLine, then the identifier is used as * the name of the directory holding the JVM library (the name of the JVM). * - if the flag appears as the first flag on an aliasLine, the identifier * of the second flag is used as the name of the JVM. * - if the flag appears on a warnLine, the identifier is used as the * name of the JVM, but a warning is generated. * - if the flag appears on an ignoreLine, the identifier is recognized as the * name of a JVM, but the identifier is ignored and the default vm used * - if the flag appears on an errorLine, an error is generated. * - if the flag appears as the first flag on a predicateLine, and * the machine on which you are running passes the predicate indicated, * then the identifier of the second flag is used as the name of the JVM, * otherwise the identifier of the first flag is used as the name of the JVM. * If no flag is given on the command line, the first vmLine of the jvm.cfg * file determines the name of the JVM. * PredicateLines are only interpreted on first vmLine of a jvm.cfg file, * since they only make sense if someone hasn't specified the name of the * JVM on the command line. * * The intent of the jvm.cfg file is to allow several JVM libraries to * be installed in different subdirectories of a single JRE installation, * for space-savings and convenience in testing. * The intent is explicitly not to provide a full aliasing or predicate * mechanism. */ jint ReadKnownVMs(const char *jrepath, char * arch, jboolean speculative) { FILE *jvmCfg; char jvmCfgName[MAXPATHLEN+20]; char line[MAXPATHLEN+20]; int cnt = 0; int lineno = 0; jlong start, end; int vmType; char *tmpPtr; char *altVMName = NULL; char *serverClassVMName = NULL; static char *whiteSpace = " \t"; if (_launcher_debug) { start = CounterGet(); } strcpy(jvmCfgName, jrepath); strcat(jvmCfgName, FILESEP "lib" FILESEP); strcat(jvmCfgName, arch); strcat(jvmCfgName, FILESEP "jvm.cfg"); jvmCfg = fopen(jvmCfgName, "r"); if (jvmCfg == NULL) { if (!speculative) { ReportErrorMessage2("Error: could not open `%s'", jvmCfgName, JNI_TRUE); exit(1); } else { return -1; } } while (fgets(line, sizeof(line), jvmCfg) != NULL) { vmType = VM_UNKNOWN; lineno++; if (line[0] == '#') continue; if (line[0] != '-') { fprintf(stderr, "Warning: no leading - on line %d of `%s'\n", lineno, jvmCfgName); } if (cnt >= knownVMsLimit) { GrowKnownVMs(cnt); } line[strlen(line)-1] = '\0'; /* remove trailing newline */ tmpPtr = line + strcspn(line, whiteSpace); if (*tmpPtr == 0) { fprintf(stderr, "Warning: missing VM type on line %d of `%s'\n", lineno, jvmCfgName); } else { /* Null-terminate this string for JLI_StringDup below */ *tmpPtr++ = 0; tmpPtr += strspn(tmpPtr, whiteSpace); if (*tmpPtr == 0) { fprintf(stderr, "Warning: missing VM type on line %d of `%s'\n", lineno, jvmCfgName); } else { if (!strncmp(tmpPtr, "KNOWN", strlen("KNOWN"))) { vmType = VM_KNOWN; } else if (!strncmp(tmpPtr, "ALIASED_TO", strlen("ALIASED_TO"))) { tmpPtr += strcspn(tmpPtr, whiteSpace); if (*tmpPtr != 0) { tmpPtr += strspn(tmpPtr, whiteSpace); } if (*tmpPtr == 0) { fprintf(stderr, "Warning: missing VM alias on line %d of `%s'\n", lineno, jvmCfgName); } else { /* Null terminate altVMName */ altVMName = tmpPtr; tmpPtr += strcspn(tmpPtr, whiteSpace); *tmpPtr = 0; vmType = VM_ALIASED_TO; } } else if (!strncmp(tmpPtr, "WARN", strlen("WARN"))) { vmType = VM_WARN; } else if (!strncmp(tmpPtr, "IGNORE", strlen("IGNORE"))) { vmType = VM_IGNORE; } else if (!strncmp(tmpPtr, "ERROR", strlen("ERROR"))) { vmType = VM_ERROR; } else if (!strncmp(tmpPtr, "IF_SERVER_CLASS", strlen("IF_SERVER_CLASS"))) { tmpPtr += strcspn(tmpPtr, whiteSpace); if (*tmpPtr != 0) { tmpPtr += strspn(tmpPtr, whiteSpace); } if (*tmpPtr == 0) { fprintf(stderr, "Warning: missing server class VM on line %d of `%s'\n", lineno, jvmCfgName); } else { /* Null terminate server class VM name */ serverClassVMName = tmpPtr; tmpPtr += strcspn(tmpPtr, whiteSpace); *tmpPtr = 0; vmType = VM_IF_SERVER_CLASS; } } else { fprintf(stderr, "Warning: unknown VM type on line %d of `%s'\n", lineno, &jvmCfgName[0]); vmType = VM_KNOWN; } } } if (_launcher_debug) printf("jvm.cfg[%d] = ->%s<-\n", cnt, line); if (vmType != VM_UNKNOWN) { knownVMs[cnt].name = JLI_StringDup(line); knownVMs[cnt].flag = vmType; switch (vmType) { default: break; case VM_ALIASED_TO: knownVMs[cnt].alias = JLI_StringDup(altVMName); if (_launcher_debug) { printf(" name: %s vmType: %s alias: %s\n", knownVMs[cnt].name, "VM_ALIASED_TO", knownVMs[cnt].alias); } break; case VM_IF_SERVER_CLASS: knownVMs[cnt].server_class = JLI_StringDup(serverClassVMName); if (_launcher_debug) { printf(" name: %s vmType: %s server_class: %s\n", knownVMs[cnt].name, "VM_IF_SERVER_CLASS", knownVMs[cnt].server_class); } break; } cnt++; } } fclose(jvmCfg); knownVMsCount = cnt; if (_launcher_debug) { end = CounterGet(); printf("%ld micro seconds to parse jvm.cfg\n", (long)(jint)Counter2Micros(end-start)); } return cnt; } static void GrowKnownVMs(int minimum) { struct vmdesc* newKnownVMs; int newMax; newMax = (knownVMsLimit == 0 ? INIT_MAX_KNOWN_VMS : (2 * knownVMsLimit)); if (newMax <= minimum) { newMax = minimum; } newKnownVMs = (struct vmdesc*) JLI_MemAlloc(newMax * sizeof(struct vmdesc)); if (knownVMs != NULL) { memcpy(newKnownVMs, knownVMs, knownVMsLimit * sizeof(struct vmdesc)); } JLI_MemFree(knownVMs); knownVMs = newKnownVMs; knownVMsLimit = newMax; } /* Returns index of VM or -1 if not found */ static int KnownVMIndex(const char* name) { int i; if (strncmp(name, "-J", 2) == 0) name += 2; for (i = 0; i < knownVMsCount; i++) { if (!strcmp(name, knownVMs[i].name)) { return i; } } return -1; } static void FreeKnownVMs() { int i; for (i = 0; i < knownVMsCount; i++) { JLI_MemFree(knownVMs[i].name); knownVMs[i].name = NULL; } JLI_MemFree(knownVMs); } /* * Displays the splash screen according to the jar file name * and image file names stored in environment variables */ static void ShowSplashScreen() { const char *jar_name = getenv(SPLASH_JAR_ENV_ENTRY); const char *file_name = getenv(SPLASH_FILE_ENV_ENTRY); int data_size; void *image_data; if (jar_name) { image_data = JLI_JarUnpackFile(jar_name, file_name, &data_size); if (image_data) { DoSplashInit(); DoSplashLoadMemory(image_data, data_size); JLI_MemFree(image_data); } } else if (file_name) { DoSplashInit(); DoSplashLoadFile(file_name); } else { return; } DoSplashSetFileJarName(file_name, jar_name); } #endif /* ifndef GAMMA */