/*
* 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 */