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/*
* Copyright (c) 1995, 2022, 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. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* 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.
*/
/*
* 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.
*/
/*
* 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. The CreateExecutionEnvironment function processes
* and removes -d<n> options. On unix, there is a possibility that the running
* data model may not match to the desired data model, in this case an exec is
* required to start the desired model. If the data models match, then
* ParseArguments will remove the -d<n> flags. If the data models do not match
* the CreateExecutionEnviroment will remove the -d<n> flags.
*/
#include <assert.h>
#include "java.h"
#include "jni.h"
/*
* 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 USE_STDERR JNI_TRUE /* we usually print to stderr */
#define USE_STDOUT JNI_FALSE
static jboolean printVersion = JNI_FALSE; /* print and exit */
static jboolean showVersion = JNI_FALSE; /* print but continue */
static jboolean printUsage = JNI_FALSE; /* print and exit*/
static jboolean printTo = USE_STDERR; /* where to print version/usage */
static jboolean printXUsage = JNI_FALSE; /* print and exit*/
static jboolean dryRun = JNI_FALSE; /* initialize VM and exit */
static char *showSettings = NULL; /* print but continue */
static jboolean showResolvedModules = JNI_FALSE;
static jboolean listModules = JNI_FALSE;
static char *describeModule = NULL;
static jboolean validateModules = JNI_FALSE;
static const char *_program_name;
static const char *_launcher_name;
static jboolean _is_java_args = JNI_FALSE;
static jboolean _have_classpath = JNI_FALSE;
static const char *_fVersion;
static jboolean _wc_enabled = JNI_FALSE;
/*
* 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;
/*
* 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 const char* GetFullVersion();
static jboolean IsJavaArgs();
static void SetJavaLauncherProp();
static void SetClassPath(const char *s);
static void SetMainModule(const char *s);
static void SelectVersion(int argc, char **argv, char **main_class);
static jboolean ParseArguments(int *pargc, char ***pargv,
int *pmode, char **pwhat,
int *pret, const char *jrepath);
static jboolean InitializeJVM(JavaVM **pvm, JNIEnv **penv,
InvocationFunctions *ifn);
static jstring NewPlatformString(JNIEnv *env, char *s);
static jclass LoadMainClass(JNIEnv *env, int mode, char *name);
static jclass GetApplicationClass(JNIEnv *env);
static void TranslateApplicationArgs(int jargc, const char **jargv, int *pargc, char ***pargv);
static jboolean AddApplicationOptions(int cpathc, const char **cpathv);
static void SetApplicationClassPath(const char**);
static void PrintJavaVersion(JNIEnv *env);
static void PrintUsage(JNIEnv* env, jboolean doXUsage);
static void ShowSettings(JNIEnv* env, char *optString);
static void ShowResolvedModules(JNIEnv* env);
static void ListModules(JNIEnv* env);
static void DescribeModule(JNIEnv* env, char* optString);
static jboolean ValidateModules(JNIEnv* env);
static void SetPaths(int argc, char **argv);
static void DumpState();
enum OptionKind {
LAUNCHER_OPTION = 0,
LAUNCHER_OPTION_WITH_ARGUMENT,
LAUNCHER_MAIN_OPTION,
VM_LONG_OPTION,
VM_LONG_OPTION_WITH_ARGUMENT,
VM_OPTION
};
static int GetOpt(int *pargc, char ***pargv, char **poption, char **pvalue);
static jboolean IsOptionWithArgument(int argc, char **argv);
/* Maximum supported entries from jvm.cfg. */
#define INIT_MAX_KNOWN_VMS 10
/* Values for vmdesc.flag */
enum vmdesc_flag {
VM_UNKNOWN = -1,
VM_KNOWN,
VM_ALIASED_TO,
VM_WARN,
VM_ERROR,
VM_IF_SERVER_CLASS,
VM_IGNORE
};
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(int minimum);
static int KnownVMIndex(const char* name);
static void FreeKnownVMs();
static jboolean IsWildCardEnabled();
#define SOURCE_LAUNCHER_MAIN_ENTRY "jdk.compiler/com.sun.tools.javac.launcher.Main"
/*
* This reports error. VM will not be created and no usage is printed.
*/
#define REPORT_ERROR(AC_ok, AC_failure_message, AC_questionable_arg) \
do { \
if (!AC_ok) { \
JLI_ReportErrorMessage(AC_failure_message, AC_questionable_arg); \
printUsage = JNI_FALSE; \
*pret = 1; \
return JNI_FALSE; \
} \
} while (JNI_FALSE)
#define ARG_CHECK(AC_arg_count, AC_failure_message, AC_questionable_arg) \
do { \
if (AC_arg_count < 1) { \
JLI_ReportErrorMessage(AC_failure_message, AC_questionable_arg); \
printUsage = JNI_TRUE; \
*pret = 1; \
return JNI_TRUE; \
} \
} while (JNI_FALSE)
/*
* 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 */
static jlong maxHeapSize = 0; /* max heap size */
static jlong initialHeapSize = 0; /* initial heap size */
/*
* A minimum initial-thread stack size suitable for most platforms.
* This is the minimum amount of stack needed to load the JVM such
* that it can reject a too small -Xss value. If this is too small
* JVM initialization would cause a StackOverflowError.
*/
#ifndef STACK_SIZE_MINIMUM
#define STACK_SIZE_MINIMUM (64 * KB)
#endif
/*
* Entry point.
*/
JNIEXPORT int JNICALL
JLI_Launch(int argc, char ** argv, /* main argc, argv */
int jargc, const char** jargv, /* java args */
int appclassc, const char** appclassv, /* app classpath */
const char* fullversion, /* full version defined */
const char* dotversion, /* UNUSED dot version defined */
const char* pname, /* program name */
const char* lname, /* launcher name */
jboolean javaargs, /* JAVA_ARGS */
jboolean cpwildcard, /* classpath wildcard*/
jboolean javaw, /* windows-only javaw */
jint ergo /* unused */
)
{
int mode = LM_UNKNOWN;
char *what = NULL;
char *main_class = NULL;
int ret;
InvocationFunctions ifn;
jlong start = 0, end = 0;
char jvmpath[MAXPATHLEN];
char jrepath[MAXPATHLEN];
char jvmcfg[MAXPATHLEN];
_fVersion = fullversion;
_launcher_name = lname;
_program_name = pname;
_is_java_args = javaargs;
_wc_enabled = cpwildcard;
InitLauncher(javaw);
DumpState();
if (JLI_IsTraceLauncher()) {
int i;
printf("Java args:\n");
for (i = 0; i < jargc ; i++) {
printf("jargv[%d] = %s\n", i, jargv[i]);
}
printf("Command line args:\n");
for (i = 0; i < argc ; i++) {
printf("argv[%d] = %s\n", i, argv[i]);
}
AddOption("-Dsun.java.launcher.diag=true", NULL);
}
/*
* SelectVersion() has several responsibilities:
*
* 1) Disallow specification of another JRE. With 1.9, another
* version of the JRE cannot be invoked.
* 2) Allow for a JRE version to invoke JDK 1.9 or later. Since
* all mJRE directives have been stripped from the request but
* the pre 1.9 JRE [ 1.6 thru 1.8 ], it is as if 1.9+ has been
* invoked from the command line.
*/
SelectVersion(argc, argv, &main_class);
CreateExecutionEnvironment(&argc, &argv,
jrepath, sizeof(jrepath),
jvmpath, sizeof(jvmpath),
jvmcfg, sizeof(jvmcfg));
ifn.CreateJavaVM = 0;
ifn.GetDefaultJavaVMInitArgs = 0;
if (JLI_IsTraceLauncher()) {
start = CurrentTimeMicros();
}
if (!LoadJavaVM(jvmpath, &ifn)) {
return(6);
}
if (JLI_IsTraceLauncher()) {
end = CurrentTimeMicros();
}
JLI_TraceLauncher("%ld micro seconds to LoadJavaVM\n", (long)(end-start));
++argv;
--argc;
if (IsJavaArgs()) {
/* Preprocess wrapper arguments */
TranslateApplicationArgs(jargc, jargv, &argc, &argv);
if (!AddApplicationOptions(appclassc, appclassv)) {
return(1);
}
} else {
/* Set default CLASSPATH */
char* cpath = getenv("CLASSPATH");
if (cpath != NULL) {
SetClassPath(cpath);
}
}
/* Parse command line options; if the return value of
* ParseArguments is false, the program should exit.
*/
if (!ParseArguments(&argc, &argv, &mode, &what, &ret, jrepath)) {
return(ret);
}
/* Override class path if -jar flag was specified */
if (mode == LM_JAR) {
SetClassPath(what); /* Override class path */
}
/* set the -Dsun.java.command pseudo property */
SetJavaCommandLineProp(what, argc, argv);
/* Set the -Dsun.java.launcher pseudo property */
SetJavaLauncherProp();
return JVMInit(&ifn, threadStackSize, argc, argv, mode, what, ret);
}
/*
* Always 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.
*
* 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.
*/
#define LEAVE() \
do { \
if ((*vm)->DetachCurrentThread(vm) != JNI_OK) { \
JLI_ReportErrorMessage(JVM_ERROR2); \
ret = 1; \
} \
if (JNI_TRUE) { \
(*vm)->DestroyJavaVM(vm); \
return ret; \
} \
} while (JNI_FALSE)
#define CHECK_EXCEPTION_NULL_LEAVE(CENL_exception) \
do { \
if ((*env)->ExceptionOccurred(env)) { \
JLI_ReportExceptionDescription(env); \
LEAVE(); \
} \
if ((CENL_exception) == NULL) { \
JLI_ReportErrorMessage(JNI_ERROR); \
LEAVE(); \
} \
} while (JNI_FALSE)
#define CHECK_EXCEPTION_LEAVE(CEL_return_value) \
do { \
if ((*env)->ExceptionOccurred(env)) { \
JLI_ReportExceptionDescription(env); \
ret = (CEL_return_value); \
LEAVE(); \
} \
} while (JNI_FALSE)
int
JavaMain(void* _args)
{
JavaMainArgs *args = (JavaMainArgs *)_args;
int argc = args->argc;
char **argv = args->argv;
int mode = args->mode;
char *what = args->what;
InvocationFunctions ifn = args->ifn;
JavaVM *vm = 0;
JNIEnv *env = 0;
jclass mainClass = NULL;
jclass appClass = NULL; // actual application class being launched
jmethodID mainID;
jobjectArray mainArgs;
int ret = 0;
jlong start = 0, end = 0;
RegisterThread();
/* Initialize the virtual machine */
start = CurrentTimeMicros();
if (!InitializeJVM(&vm, &env, &ifn)) {
JLI_ReportErrorMessage(JVM_ERROR1);
exit(1);
}
if (showSettings != NULL) {
ShowSettings(env, showSettings);
CHECK_EXCEPTION_LEAVE(1);
}
// show resolved modules and continue
if (showResolvedModules) {
ShowResolvedModules(env);
CHECK_EXCEPTION_LEAVE(1);
}
// list observable modules, then exit
if (listModules) {
ListModules(env);
CHECK_EXCEPTION_LEAVE(1);
LEAVE();
}
// describe a module, then exit
if (describeModule != NULL) {
DescribeModule(env, describeModule);
CHECK_EXCEPTION_LEAVE(1);
LEAVE();
}
if (printVersion || showVersion) {
PrintJavaVersion(env);
CHECK_EXCEPTION_LEAVE(0);
if (printVersion) {
LEAVE();
}
}
// modules have been validated at startup so exit
if (validateModules) {
LEAVE();
}
/* If the user specified neither a class name nor a JAR file */
if (printXUsage || printUsage || what == 0 || mode == LM_UNKNOWN) {
PrintUsage(env, printXUsage);
CHECK_EXCEPTION_LEAVE(1);
LEAVE();
}
FreeKnownVMs(); /* after last possible PrintUsage */
if (JLI_IsTraceLauncher()) {
end = CurrentTimeMicros();
JLI_TraceLauncher("%ld micro seconds to InitializeJVM\n", (long)(end-start));
}
/* At this stage, argc/argv have the application's arguments */
if (JLI_IsTraceLauncher()){
int i;
printf("%s is '%s'\n", launchModeNames[mode], what);
printf("App's argc is %d\n", argc);
for (i=0; i < argc; i++) {
printf(" argv[%2d] = '%s'\n", i, argv[i]);
}
}
ret = 1;
/*
* Get the application's main class. It also checks if the main
* method exists.
*
* 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).
*
* This method also correctly handles launching existing JavaFX
* applications that may or may not have a Main-Class manifest entry.
*/
mainClass = LoadMainClass(env, mode, what);
CHECK_EXCEPTION_NULL_LEAVE(mainClass);
/*
* In some cases when launching an application that needs a helper, e.g., a
* JavaFX application with no main method, the mainClass will not be the
* applications own main class but rather a helper class. To keep things
* consistent in the UI we need to track and report the application main class.
*/
appClass = GetApplicationClass(env);
NULL_CHECK_RETURN_VALUE(appClass, -1);
/* Build platform specific argument array */
mainArgs = CreateApplicationArgs(env, argv, argc);
CHECK_EXCEPTION_NULL_LEAVE(mainArgs);
if (dryRun) {
ret = 0;
LEAVE();
}
/*
* PostJVMInit uses the class name as the application name for GUI purposes,
* for example, on OSX this sets the application name in the menu bar for
* both SWT and JavaFX. So we'll pass the actual application class here
* instead of mainClass as that may be a launcher or helper class instead
* of the application class.
*/
PostJVMInit(env, appClass, vm);
CHECK_EXCEPTION_LEAVE(1);
/*
* The LoadMainClass not only loads the main class, it will also ensure
* that the main method's signature is correct, therefore further checking
* is not required. The main method is invoked here so that extraneous java
* stacks are not in the application stack trace.
*/
mainID = (*env)->GetStaticMethodID(env, mainClass, "main",
"([Ljava/lang/String;)V");
CHECK_EXCEPTION_NULL_LEAVE(mainID);
/* 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;
LEAVE();
}
/*
* Test if the given name is one of the class path options.
*/
static jboolean
IsClassPathOption(const char* name) {
return JLI_StrCmp(name, "-classpath") == 0 ||
JLI_StrCmp(name, "-cp") == 0 ||
JLI_StrCmp(name, "--class-path") == 0;
}
/*
* Test if the given name is a launcher option taking the main entry point.
*/
static jboolean
IsLauncherMainOption(const char* name) {
return JLI_StrCmp(name, "--module") == 0 ||
JLI_StrCmp(name, "-m") == 0;
}
/*
* Test if the given name is a white-space launcher option.
*/
static jboolean
IsLauncherOption(const char* name) {
return IsClassPathOption(name) ||
IsLauncherMainOption(name) ||
JLI_StrCmp(name, "--describe-module") == 0 ||
JLI_StrCmp(name, "-d") == 0 ||
JLI_StrCmp(name, "--source") == 0;
}
/*
* Test if the given name is a module-system white-space option that
* will be passed to the VM with its corresponding long-form option
* name and "=" delimiter.
*/
static jboolean
IsModuleOption(const char* name) {
return JLI_StrCmp(name, "--module-path") == 0 ||
JLI_StrCmp(name, "-p") == 0 ||
JLI_StrCmp(name, "--upgrade-module-path") == 0 ||
JLI_StrCmp(name, "--add-modules") == 0 ||
JLI_StrCmp(name, "--enable-native-access") == 0 ||
JLI_StrCmp(name, "--limit-modules") == 0 ||
JLI_StrCmp(name, "--add-exports") == 0 ||
JLI_StrCmp(name, "--add-opens") == 0 ||
JLI_StrCmp(name, "--add-reads") == 0 ||
JLI_StrCmp(name, "--patch-module") == 0;
}
static jboolean
IsLongFormModuleOption(const char* name) {
return JLI_StrCCmp(name, "--module-path=") == 0 ||
JLI_StrCCmp(name, "--upgrade-module-path=") == 0 ||
JLI_StrCCmp(name, "--add-modules=") == 0 ||
JLI_StrCCmp(name, "--enable-native-access=") == 0 ||
JLI_StrCCmp(name, "--limit-modules=") == 0 ||
JLI_StrCCmp(name, "--add-exports=") == 0 ||
JLI_StrCCmp(name, "--add-reads=") == 0 ||
JLI_StrCCmp(name, "--patch-module=") == 0;
}
/*
* Test if the given name has a white space option.
*/
jboolean
IsWhiteSpaceOption(const char* name) {
return IsModuleOption(name) ||
IsLauncherOption(name);
}
/*
* Check if it is OK to set the mode.
* If the mode was previously set, and should not be changed,
* a fatal error is reported.
*/
static int
checkMode(int mode, int newMode, const char *arg) {
if (mode == LM_SOURCE) {
JLI_ReportErrorMessage(ARG_ERROR14, arg);
exit(1);
}
return newMode;
}
/*
* Test if an arg identifies a source file.
*/
static jboolean IsSourceFile(const char *arg) {
struct stat st;
return (JLI_HasSuffix(arg, ".java") && stat(arg, &st) == 0);
}
/*
* 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;
if (IsJavaArgs()) {
if (arg[0] != '-') {
newArgv[newArgvIdx++] = arg;
continue;
}
} else {
if (IsWhiteSpaceOption(arg)) {
newArgv[newArgvIdx++] = arg;
argi++;
if (argi < argc) {
newArgv[newArgvIdx++] = (*argv)[argi];
}
continue;
}
if (arg[0] != '-') break;
}
/* 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 (JLI_StrCCmp(arg, "-XXaltjvm=") == 0 || JLI_StrCCmp(arg, "-J-XXaltjvm=") == 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;
JLI_TraceLauncher("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) {
JLI_ReportErrorMessage(CFG_ERROR1);
exit(1);
} else {
return "ERROR";
/* break; */
}
}
if (nextIdx < 0) {
if (!speculative) {
JLI_ReportErrorMessage(CFG_ERROR2, knownVMs[jvmidx].alias);
exit(1);
} else {
return "ERROR";
}
}
jvmidx = nextIdx;
jvmtype = knownVMs[jvmidx].name+1;
loopCount++;
}
}
switch (knownVMs[jvmidx].flag) {
case VM_WARN:
if (!speculative) {
JLI_ReportErrorMessage(CFG_WARN1, 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) {
JLI_ReportErrorMessage(CFG_ERROR3, jvmtype);
exit(1);
} else {
return "ERROR";
}
}
return jvmtype;
}
/* copied from HotSpot function "atomll()" */
static int
parse_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 (JLI_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 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;
/*
* -Xss is used both by the JVM and here to establish the stack size of the thread
* created to launch the JVM. In the latter case we need to ensure we don't go
* below the minimum stack size allowed. If -Xss is zero that tells the JVM to use
* 'default' sizes (either from JVM or system configuration, e.g. 'ulimit -s' on linux),
* and is not itself a small stack size that will be rejected. So we ignore -Xss0 here.
*/
if (JLI_StrCCmp(str, "-Xss") == 0) {
jlong tmp;
if (parse_size(str + 4, &tmp)) {
threadStackSize = tmp;
if (threadStackSize > 0 && threadStackSize < (jlong)STACK_SIZE_MINIMUM) {
threadStackSize = STACK_SIZE_MINIMUM;
}
}
}
if (JLI_StrCCmp(str, "-Xmx") == 0) {
jlong tmp;
if (parse_size(str + 4, &tmp)) {
maxHeapSize = tmp;
}
}
if (JLI_StrCCmp(str, "-Xms") == 0) {
jlong tmp;
if (parse_size(str + 4, &tmp)) {
initialHeapSize = tmp;
}
}
}
static void
SetClassPath(const char *s)
{
char *def;
const char *orig = s;
static const char format[] = "-Djava.class.path=%s";
/*
* usually we should not get a null pointer, but there are cases where
* we might just get one, in which case we simply ignore it, and let the
* caller deal with it
*/
if (s == NULL)
return;
s = JLI_WildcardExpandClasspath(s);
if (sizeof(format) - 2 + JLI_StrLen(s) < JLI_StrLen(s))
// s is became corrupted after expanding wildcards
return;
def = JLI_MemAlloc(sizeof(format)
- 2 /* strlen("%s") */
+ JLI_StrLen(s));
sprintf(def, format, s);
AddOption(def, NULL);
if (s != orig)
JLI_MemFree((char *) s);
_have_classpath = JNI_TRUE;
}
static void
AddLongFormOption(const char *option, const char *arg)
{
static const char format[] = "%s=%s";
char *def;
size_t def_len;
def_len = JLI_StrLen(option) + 1 + JLI_StrLen(arg) + 1;
def = JLI_MemAlloc(def_len);
JLI_Snprintf(def, def_len, format, option, arg);
AddOption(def, NULL);
}
static void
SetMainModule(const char *s)
{
static const char format[] = "-Djdk.module.main=%s";
char* slash = JLI_StrChr(s, '/');
size_t s_len, def_len;
char *def;
/* value may be <module> or <module>/<mainclass> */
if (slash == NULL) {
s_len = JLI_StrLen(s);
} else {
s_len = (size_t) (slash - s);
}
def_len = sizeof(format)
- 2 /* strlen("%s") */
+ s_len;
def = JLI_MemAlloc(def_len);
JLI_Snprintf(def, def_len, format, s);
AddOption(def, NULL);
}
/*
* 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 *operand;
int jarflag = 0;
int headlessflag = 0;
manifest_info info;
char *splash_file_name = NULL;
char *splash_jar_name = NULL;
char *env_in;
int res;
jboolean has_arg;
/*
* If the version has already been selected, set *main_class
* with the value passed through the environment (if any) and
* simply return.
*/
/*
* This environmental variable can be set by mJRE capable JREs
* [ 1.5 thru 1.8 ]. All other aspects of mJRE processing have been
* stripped by those JREs. This environmental variable allows 1.9+
* JREs to be started by these mJRE capable JREs.
* Note that mJRE directives in the jar manifest file would have been
* ignored for a JRE started by another JRE...
* .. skipped for JRE 1.5 and beyond.
* .. not even checked for pre 1.5.
*/
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. Multiple JRE support existed in JRE versions 1.5 thru 1.8.
*
* This capability is no longer available with JRE versions 1.9 and later.
* These command line options are reported as errors.
*/
argc--;
argv++;
while ((arg = *argv) != 0 && *arg == '-') {
has_arg = IsOptionWithArgument(argc, argv);
if (JLI_StrCCmp(arg, "-version:") == 0) {
JLI_ReportErrorMessage(SPC_ERROR1);
} else if (JLI_StrCmp(arg, "-jre-restrict-search") == 0) {
JLI_ReportErrorMessage(SPC_ERROR2);
} else if (JLI_StrCmp(arg, "-jre-no-restrict-search") == 0) {
JLI_ReportErrorMessage(SPC_ERROR2);
} else {
if (JLI_StrCmp(arg, "-jar") == 0)
jarflag = 1;
if (IsWhiteSpaceOption(arg)) {
if (has_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 (JLI_StrCmp(arg, "-Djava.awt.headless=true") == 0) {
headlessflag = 1;
} else if (JLI_StrCCmp(arg, "-Djava.awt.headless=") == 0) {
headlessflag = 0;
} else if (JLI_StrCCmp(arg, "-splash:") == 0) {
splash_file_name = arg+8;
}
}
argc--;
argv++;
}
if (argc <= 0) { /* No operand? Possibly legit with -[full]version */
operand = NULL;
} else {
argc--;
operand = *argv++;
}
/*
* 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)
JLI_ReportErrorMessage(JAR_ERROR2, operand);
else
JLI_ReportErrorMessage(JAR_ERROR3, operand);
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) {
splash_file_entry = JLI_MemAlloc(JLI_StrLen(SPLASH_FILE_ENV_ENTRY "=")+JLI_StrLen(splash_file_name)+1);
JLI_StrCpy(splash_file_entry, SPLASH_FILE_ENV_ENTRY "=");
JLI_StrCat(splash_file_entry, splash_file_name);
putenv(splash_file_entry);
}
if (splash_jar_name && !headlessflag) {
splash_jar_entry = JLI_MemAlloc(JLI_StrLen(SPLASH_JAR_ENV_ENTRY "=")+JLI_StrLen(splash_jar_name)+1);
JLI_StrCpy(splash_jar_entry, SPLASH_JAR_ENV_ENTRY "=");
JLI_StrCat(splash_jar_entry, splash_jar_name);
putenv(splash_jar_entry);
}
/*
* "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 (info.jre_version == NULL) {
JLI_FreeManifest();
return;
}
}
/*
* Test if the current argv is an option, i.e. with a leading `-`
* and followed with an argument without a leading `-`.
*/
static jboolean
IsOptionWithArgument(int argc, char** argv) {
char* option;
char* arg;
if (argc <= 1)
return JNI_FALSE;
option = *argv;
arg = *(argv+1);
return *option == '-' && *arg != '-';
}
/*
* Gets the option, and its argument if the option has an argument.
* It will update *pargc, **pargv to the next option.
*/
static int
GetOpt(int *pargc, char ***pargv, char **poption, char **pvalue) {
int argc = *pargc;
char** argv = *pargv;
char* arg = *argv;
char* option = arg;
char* value = NULL;
char* equals = NULL;
int kind = LAUNCHER_OPTION;
jboolean has_arg = JNI_FALSE;
// check if this option may be a white-space option with an argument
has_arg = IsOptionWithArgument(argc, argv);
argv++; --argc;
if (IsLauncherOption(arg)) {
if (has_arg) {
value = *argv;
argv++; --argc;
}
kind = IsLauncherMainOption(arg) ? LAUNCHER_MAIN_OPTION
: LAUNCHER_OPTION_WITH_ARGUMENT;
} else if (IsModuleOption(arg)) {
kind = VM_LONG_OPTION_WITH_ARGUMENT;
if (has_arg) {
value = *argv;
argv++; --argc;
}
/*
* Support short form alias
*/
if (JLI_StrCmp(arg, "-p") == 0) {
option = "--module-path";
}
} else if (JLI_StrCCmp(arg, "--") == 0 && (equals = JLI_StrChr(arg, '=')) != NULL) {
value = equals+1;
if (JLI_StrCCmp(arg, "--describe-module=") == 0 ||
JLI_StrCCmp(arg, "--module=") == 0 ||
JLI_StrCCmp(arg, "--class-path=") == 0||
JLI_StrCCmp(arg, "--source=") == 0) {
kind = LAUNCHER_OPTION_WITH_ARGUMENT;
} else {
kind = VM_LONG_OPTION;
}
}
*pargc = argc;
*pargv = argv;
*poption = option;
*pvalue = value;
return kind;
}
/*
* Parses command line arguments. Returns JNI_FALSE if launcher
* should exit without starting vm, 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,
int *pmode, char **pwhat,
int *pret, const char *jrepath)
{
int argc = *pargc;
char **argv = *pargv;
int mode = LM_UNKNOWN;
char *arg;
*pret = 0;
while ((arg = *argv) != 0 && *arg == '-') {
char *option = NULL;
char *value = NULL;
int kind = GetOpt(&argc, &argv, &option, &value);
jboolean has_arg = value != NULL && JLI_StrLen(value) > 0;
jboolean has_arg_any_len = value != NULL;
/*
* Option to set main entry point
*/
if (JLI_StrCmp(arg, "-jar") == 0) {
ARG_CHECK(argc, ARG_ERROR2, arg);
mode = checkMode(mode, LM_JAR, arg);
} else if (JLI_StrCmp(arg, "--module") == 0 ||
JLI_StrCCmp(arg, "--module=") == 0 ||
JLI_StrCmp(arg, "-m") == 0) {
REPORT_ERROR (has_arg, ARG_ERROR5, arg);
SetMainModule(value);
mode = checkMode(mode, LM_MODULE, arg);
if (has_arg) {
*pwhat = value;
break;
}
} else if (JLI_StrCmp(arg, "--source") == 0 ||
JLI_StrCCmp(arg, "--source=") == 0) {
REPORT_ERROR (has_arg, ARG_ERROR13, arg);
mode = LM_SOURCE;
if (has_arg) {
const char *prop = "-Djdk.internal.javac.source=";
size_t size = JLI_StrLen(prop) + JLI_StrLen(value) + 1;
char *propValue = (char *)JLI_MemAlloc(size);
JLI_Snprintf(propValue, size, "%s%s", prop, value);
AddOption(propValue, NULL);
}
} else if (JLI_StrCmp(arg, "--class-path") == 0 ||
JLI_StrCCmp(arg, "--class-path=") == 0 ||
JLI_StrCmp(arg, "-classpath") == 0 ||
JLI_StrCmp(arg, "-cp") == 0) {
REPORT_ERROR (has_arg_any_len, ARG_ERROR1, arg);
SetClassPath(value);
if (mode != LM_SOURCE) {
mode = LM_CLASS;
}
} else if (JLI_StrCmp(arg, "--list-modules") == 0) {
listModules = JNI_TRUE;
} else if (JLI_StrCmp(arg, "--show-resolved-modules") == 0) {
showResolvedModules = JNI_TRUE;
} else if (JLI_StrCmp(arg, "--validate-modules") == 0) {
AddOption("-Djdk.module.validation=true", NULL);
validateModules = JNI_TRUE;
} else if (JLI_StrCmp(arg, "--describe-module") == 0 ||
JLI_StrCCmp(arg, "--describe-module=") == 0 ||
JLI_StrCmp(arg, "-d") == 0) {
REPORT_ERROR (has_arg_any_len, ARG_ERROR12, arg);
describeModule = value;
/*
* Parse white-space options
*/
} else if (has_arg) {
if (kind == VM_LONG_OPTION) {
AddOption(option, NULL);
} else if (kind == VM_LONG_OPTION_WITH_ARGUMENT) {
AddLongFormOption(option, value);
}
/*
* Error missing argument
*/
} else if (!has_arg && (JLI_StrCmp(arg, "--module-path") == 0 ||
JLI_StrCmp(arg, "-p") == 0 ||
JLI_StrCmp(arg, "--upgrade-module-path") == 0)) {
REPORT_ERROR (has_arg, ARG_ERROR4, arg);
} else if (!has_arg && (IsModuleOption(arg) || IsLongFormModuleOption(arg))) {
REPORT_ERROR (has_arg, ARG_ERROR6, arg);
/*
* The following cases will cause the argument parsing to stop
*/
} else if (JLI_StrCmp(arg, "-help") == 0 ||
JLI_StrCmp(arg, "-h") == 0 ||
JLI_StrCmp(arg, "-?") == 0) {
printUsage = JNI_TRUE;
return JNI_TRUE;
} else if (JLI_StrCmp(arg, "--help") == 0) {
printUsage = JNI_TRUE;
printTo = USE_STDOUT;
return JNI_TRUE;
} else if (JLI_StrCmp(arg, "-version") == 0) {
printVersion = JNI_TRUE;
return JNI_TRUE;
} else if (JLI_StrCmp(arg, "--version") == 0) {
printVersion = JNI_TRUE;
printTo = USE_STDOUT;
return JNI_TRUE;
} else if (JLI_StrCmp(arg, "-showversion") == 0) {
showVersion = JNI_TRUE;
} else if (JLI_StrCmp(arg, "--show-version") == 0) {
showVersion = JNI_TRUE;
printTo = USE_STDOUT;
} else if (JLI_StrCmp(arg, "--dry-run") == 0) {
dryRun = JNI_TRUE;
} else if (JLI_StrCmp(arg, "-X") == 0) {
printXUsage = JNI_TRUE;
return JNI_TRUE;
} else if (JLI_StrCmp(arg, "--help-extra") == 0) {
printXUsage = JNI_TRUE;
printTo = USE_STDOUT;
return JNI_TRUE;
/*
* The following case checks for -XshowSettings OR -XshowSetting:SUBOPT.
* In the latter case, any SUBOPT value not recognized will default to "all"
*/
} else if (JLI_StrCmp(arg, "-XshowSettings") == 0 ||
JLI_StrCCmp(arg, "-XshowSettings:") == 0) {
showSettings = arg;
} else if (JLI_StrCmp(arg, "-Xdiag") == 0) {
AddOption("-Dsun.java.launcher.diag=true", NULL);
} else if (JLI_StrCmp(arg, "--show-module-resolution") == 0) {
AddOption("-Djdk.module.showModuleResolution=true", NULL);
/*
* The following case provide backward compatibility with old-style
* command line options.
*/
} else if (JLI_StrCmp(arg, "-fullversion") == 0) {
JLI_ReportMessage("%s full version \"%s\"", _launcher_name, GetFullVersion());
return JNI_FALSE;
} else if (JLI_StrCmp(arg, "--full-version") == 0) {
JLI_ShowMessage("%s %s", _launcher_name, GetFullVersion());
return JNI_FALSE;
} else if (JLI_StrCmp(arg, "-verbosegc") == 0) {
AddOption("-verbose:gc", NULL);
} else if (JLI_StrCmp(arg, "-t") == 0) {
AddOption("-Xt", NULL);
} else if (JLI_StrCmp(arg, "-tm") == 0) {
AddOption("-Xtm", NULL);
} else if (JLI_StrCmp(arg, "-debug") == 0) {
AddOption("-Xdebug", NULL);
} else if (JLI_StrCmp(arg, "-noclassgc") == 0) {
AddOption("-Xnoclassgc", NULL);
} else if (JLI_StrCmp(arg, "-Xfuture") == 0) {
JLI_ReportErrorMessage(ARG_DEPRECATED, "-Xfuture");
AddOption("-Xverify:all", NULL);
} else if (JLI_StrCmp(arg, "-verify") == 0) {
AddOption("-Xverify:all", NULL);
} else if (JLI_StrCmp(arg, "-verifyremote") == 0) {
AddOption("-Xverify:remote", NULL);
} else if (JLI_StrCmp(arg, "-noverify") == 0) {
/*
* Note that no 'deprecated' message is needed here because the VM
* issues 'deprecated' messages for -noverify and -Xverify:none.
*/
AddOption("-Xverify:none", NULL);
} else if (JLI_StrCCmp(arg, "-ss") == 0 ||
JLI_StrCCmp(arg, "-oss") == 0 ||
JLI_StrCCmp(arg, "-ms") == 0 ||
JLI_StrCCmp(arg, "-mx") == 0) {
char *tmp = JLI_MemAlloc(JLI_StrLen(arg) + 6);
sprintf(tmp, "-X%s", arg + 1); /* skip '-' */
AddOption(tmp, NULL);
} else if (JLI_StrCmp(arg, "-checksource") == 0 ||
JLI_StrCmp(arg, "-cs") == 0 ||
JLI_StrCmp(arg, "-noasyncgc") == 0) {
/* No longer supported */
JLI_ReportErrorMessage(ARG_WARN, arg);
} else if (JLI_StrCCmp(arg, "-splash:") == 0) {
; /* Ignore machine independent options already handled */
} else if (JLI_StrCmp(arg, "--disable-@files") == 0) {
; /* Ignore --disable-@files option already handled */
} else if (ProcessPlatformOption(arg)) {
; /* Processing of platform dependent options */
} else {
/* java.class.path set on the command line */
if (JLI_StrCCmp(arg, "-Djava.class.path=") == 0) {
_have_classpath = JNI_TRUE;
}
AddOption(arg, NULL);
}
}
if (*pwhat == NULL && --argc >= 0) {
*pwhat = *argv++;
}
if (*pwhat == NULL) {
/* LM_UNKNOWN okay for options that exit */
if (!listModules && !describeModule && !validateModules) {
*pret = 1;
}
} else if (mode == LM_UNKNOWN) {
/* default to LM_CLASS if -m, -jar and -cp options are
* not specified */
if (!_have_classpath) {
SetClassPath(".");
}
mode = IsSourceFile(arg) ? LM_SOURCE : LM_CLASS;
} else if (mode == LM_CLASS && IsSourceFile(arg)) {
/* override LM_CLASS mode if given a source file */
mode = LM_SOURCE;
}
if (mode == LM_SOURCE) {
AddOption("--add-modules=ALL-DEFAULT", NULL);
*pwhat = SOURCE_LAUNCHER_MAIN_ENTRY;
// adjust (argc, argv) so that the name of the source file
// is included in the args passed to the source launcher
// main entry class
*pargc = argc + 1;
*pargv = argv - 1;
} else {
if (argc >= 0) {
*pargc = argc;
*pargv = argv;
}
}
*pmode = mode;
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 (JLI_IsTraceLauncher()) {
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;
}
static jclass helperClass = NULL;
jclass
GetLauncherHelperClass(JNIEnv *env)
{
if (helperClass == NULL) {
NULL_CHECK0(helperClass = FindBootStrapClass(env,
"sun/launcher/LauncherHelper"));
}
return helperClass;
}
static jmethodID makePlatformStringMID = NULL;
/*
* Returns a new Java string object for the specified platform string.
*/
static jstring
NewPlatformString(JNIEnv *env, char *s)
{
int len = (int)JLI_StrLen(s);
jbyteArray ary;
jclass cls = GetLauncherHelperClass(env);
NULL_CHECK0(cls);
if (s == NULL)
return 0;
ary = (*env)->NewByteArray(env, len);
if (ary != 0) {
jstring str = 0;
(*env)->SetByteArrayRegion(env, ary, 0, len, (jbyte *)s);
if (!(*env)->ExceptionOccurred(env)) {
if (makePlatformStringMID == NULL) {
NULL_CHECK0(makePlatformStringMID = (*env)->GetStaticMethodID(env,
cls, "makePlatformString", "(Z[B)Ljava/lang/String;"));
}
str = (*env)->CallStaticObjectMethod(env, cls,
makePlatformStringMID, USE_STDERR, ary);
CHECK_EXCEPTION_RETURN_VALUE(0);
(*env)->DeleteLocalRef(env, ary);
return str;
}
}
return 0;
}
/*
* Returns a new array of Java string objects for the specified
* array of platform strings.
*/
jobjectArray
NewPlatformStringArray(JNIEnv *env, char **strv, int strc)
{
jarray cls;
jarray ary;
int i;
NULL_CHECK0(cls = FindBootStrapClass(env, "java/lang/String"));
NULL_CHECK0(ary = (*env)->NewObjectArray(env, strc, cls, 0));
CHECK_EXCEPTION_RETURN_VALUE(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 and verifies that the main class is present and it is ok to
* call it for more details refer to the java implementation.
*/
static jclass
LoadMainClass(JNIEnv *env, int mode, char *name)
{
jmethodID mid;
jstring str;
jobject result;
jlong start = 0, end = 0;
jclass cls = GetLauncherHelperClass(env);
NULL_CHECK0(cls);
if (JLI_IsTraceLauncher()) {
start = CurrentTimeMicros();
}
NULL_CHECK0(mid = (*env)->GetStaticMethodID(env, cls,
"checkAndLoadMain",
"(ZILjava/lang/String;)Ljava/lang/Class;"));
NULL_CHECK0(str = NewPlatformString(env, name));
NULL_CHECK0(result = (*env)->CallStaticObjectMethod(env, cls, mid,
USE_STDERR, mode, str));
if (JLI_IsTraceLauncher()) {
end = CurrentTimeMicros();
printf("%ld micro seconds to load main class\n", (long)(end-start));
printf("----%s----\n", JLDEBUG_ENV_ENTRY);
}
return (jclass)result;
}
static jclass
GetApplicationClass(JNIEnv *env)
{
jmethodID mid;
jclass appClass;
jclass cls = GetLauncherHelperClass(env);
NULL_CHECK0(cls);
NULL_CHECK0(mid = (*env)->GetStaticMethodID(env, cls,
"getApplicationClass",
"()Ljava/lang/Class;"));
appClass = (*env)->CallStaticObjectMethod(env, cls, mid);
CHECK_EXCEPTION_RETURN_VALUE(0);
return appClass;
}
static char* expandWildcardOnLongOpt(char* arg) {
char *p, *value;
size_t optLen, valueLen;
p = JLI_StrChr(arg, '=');
if (p == NULL || p[1] == '\0') {
JLI_ReportErrorMessage(ARG_ERROR1, arg);
exit(1);
}
p++;
value = (char *) JLI_WildcardExpandClasspath(p);
if (p == value) {
// no wildcard
return arg;
}
optLen = p - arg;
valueLen = JLI_StrLen(value);
p = JLI_MemAlloc(optLen + valueLen + 1);
memcpy(p, arg, optLen);
memcpy(p + optLen, value, valueLen);
p[optLen + valueLen] = '\0';
return p;
}
/*
* For tools, convert command line args thus:
* javac -cp foo:foo/"*" -J-ms32m ...
* java -ms32m -cp JLI_WildcardExpandClasspath(foo:foo/"*") ...
*
* Takes 4 parameters, and returns the populated arguments
*/
static void
TranslateApplicationArgs(int jargc, const char **jargv, int *pargc, char ***pargv)
{
int argc = *pargc;
char **argv = *pargv;
int nargc = argc + jargc;
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 < jargc; i++) {
const char *arg = jargv[i];
if (arg[0] == '-' && arg[1] == 'J') {
assert(arg[2] != '\0' && "Invalid JAVA_ARGS or EXTRA_JAVA_ARGS defined by build");
*nargv++ = JLI_StringDup(arg + 2);
}
}
for (i = 0; i < argc; i++) {
char *arg = argv[i];
if (arg[0] == '-' && arg[1] == 'J') {
if (arg[2] == '\0') {
JLI_ReportErrorMessage(ARG_ERROR3);
exit(1);
}
*nargv++ = arg + 2;
}
}
/* Copy the rest of the arguments */
for (i = 0; i < jargc ; i++) {
const char *arg = jargv[i];
if (arg[0] != '-' || arg[1] != 'J') {
*nargv++ = (arg == NULL) ? NULL : JLI_StringDup(arg);
}
}
for (i = 0; i < argc; i++) {
char *arg = argv[i];
if (arg[0] == '-') {
if (arg[1] == 'J')
continue;
if (IsWildCardEnabled()) {
if (IsClassPathOption(arg) && i < argc - 1) {
*nargv++ = arg;
*nargv++ = (char *) JLI_WildcardExpandClasspath(argv[i+1]);
i++;
continue;
}
if (JLI_StrCCmp(arg, "--class-path=") == 0) {
*nargv++ = expandWildcardOnLongOpt(arg);
continue;
}
}
}
*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(int cpathc, const char **cpathv)
{
char *envcp, *appcp, *apphome;
char home[MAXPATHLEN]; /* application home */
char separator[] = { PATH_SEPARATOR, '\0' };
int size, i;
{
const char *s = getenv("CLASSPATH");
if (s) {
s = (char *) JLI_WildcardExpandClasspath(s);
/* 40 for -Denv.class.path= */
if (JLI_StrLen(s) + 40 > JLI_StrLen(s)) { // Safeguard from overflow
envcp = (char *)JLI_MemAlloc(JLI_StrLen(s) + 40);
sprintf(envcp, "-Denv.class.path=%s", s);
AddOption(envcp, NULL);
}
}
}
if (!GetApplicationHome(home, sizeof(home))) {
JLI_ReportErrorMessage(CFG_ERROR5);
return JNI_FALSE;
}
/* 40 for '-Dapplication.home=' */
apphome = (char *)JLI_MemAlloc(JLI_StrLen(home) + 40);
sprintf(apphome, "-Dapplication.home=%s", home);
AddOption(apphome, NULL);
/* How big is the application's classpath? */
if (cpathc > 0) {
size = 40; /* 40: "-Djava.class.path=" */
for (i = 0; i < cpathc; i++) {
size += (int)JLI_StrLen(home) + (int)JLI_StrLen(cpathv[i]) + 1; /* 1: separator */
}
appcp = (char *)JLI_MemAlloc(size + 1);
JLI_StrCpy(appcp, "-Djava.class.path=");
for (i = 0; i < cpathc; i++) {
JLI_StrCat(appcp, home); /* c:\program files\myapp */
JLI_StrCat(appcp, cpathv[i]); /* \lib\myapp.jar */
JLI_StrCat(appcp, separator); /* ; */
}
appcp[JLI_StrLen(appcp)-1] = '\0'; /* remove trailing path separator */
AddOption(appcp, NULL);
}
return JNI_TRUE;
}
/*
* 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 *what, int argc, char **argv)
{
int i = 0;
size_t len = 0;
char* javaCommand = NULL;
char* dashDstr = "-Dsun.java.command=";
if (what == NULL) {
/* unexpected, one of these should be set. just return without
* setting the property
*/
return;
}
/* determine the amount of memory to allocate assuming
* the individual components will be space separated
*/
len = JLI_StrLen(what);
for (i = 0; i < argc; i++) {
len += JLI_StrLen(argv[i]) + 1;
}
/* allocate the memory */
javaCommand = (char*) JLI_MemAlloc(len + JLI_StrLen(dashDstr) + 1);
/* build the -D string */
*javaCommand = '\0';
JLI_StrCat(javaCommand, dashDstr);
JLI_StrCat(javaCommand, what);
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.
*/
JLI_StrCat(javaCommand, " ");
JLI_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.
*/
static void SetJavaLauncherProp() {
AddOption("-Dsun.java.launcher=SUN_STANDARD", NULL);
}
/*
* Prints the version information from the java.version and other properties.
*/
static void
PrintJavaVersion(JNIEnv *env)
{
jclass ver;
jmethodID print;
NULL_CHECK(ver = FindBootStrapClass(env, "java/lang/VersionProps"));
NULL_CHECK(print = (*env)->GetStaticMethodID(env,
ver,
"print",
"(Z)V"
)
);
(*env)->CallStaticVoidMethod(env, ver, print, printTo);
}
/*
* Prints all the Java settings, see the java implementation for more details.
*/
static void
ShowSettings(JNIEnv *env, char *optString)
{
jmethodID showSettingsID;
jstring joptString;
jclass cls = GetLauncherHelperClass(env);
NULL_CHECK(cls);
NULL_CHECK(showSettingsID = (*env)->GetStaticMethodID(env, cls,
"showSettings", "(ZLjava/lang/String;JJJ)V"));
NULL_CHECK(joptString = (*env)->NewStringUTF(env, optString));
(*env)->CallStaticVoidMethod(env, cls, showSettingsID,
USE_STDERR,
joptString,
(jlong)initialHeapSize,
(jlong)maxHeapSize,
(jlong)threadStackSize);
}
/**
* Show resolved modules
*/
static void
ShowResolvedModules(JNIEnv *env)
{
jmethodID showResolvedModulesID;
jclass cls = GetLauncherHelperClass(env);
NULL_CHECK(cls);
NULL_CHECK(showResolvedModulesID = (*env)->GetStaticMethodID(env, cls,
"showResolvedModules", "()V"));
(*env)->CallStaticVoidMethod(env, cls, showResolvedModulesID);
}
/**
* List observable modules
*/
static void
ListModules(JNIEnv *env)
{
jmethodID listModulesID;
jclass cls = GetLauncherHelperClass(env);
NULL_CHECK(cls);
NULL_CHECK(listModulesID = (*env)->GetStaticMethodID(env, cls,
"listModules", "()V"));
(*env)->CallStaticVoidMethod(env, cls, listModulesID);
}
/**
* Describe a module
*/
static void
DescribeModule(JNIEnv *env, char *optString)
{
jmethodID describeModuleID;
jstring joptString = NULL;
jclass cls = GetLauncherHelperClass(env);
NULL_CHECK(cls);
NULL_CHECK(describeModuleID = (*env)->GetStaticMethodID(env, cls,
"describeModule", "(Ljava/lang/String;)V"));
NULL_CHECK(joptString = NewPlatformString(env, optString));
(*env)->CallStaticVoidMethod(env, cls, describeModuleID, joptString);
}
/*
* Prints default usage or the Xusage message, see sun.launcher.LauncherHelper.java
*/
static void
PrintUsage(JNIEnv* env, jboolean doXUsage)
{
jmethodID initHelp, vmSelect, vmSynonym, printHelp, printXUsageMessage;
jstring jprogname, vm1, vm2;
int i;
jclass cls = GetLauncherHelperClass(env);
NULL_CHECK(cls);
if (doXUsage) {
NULL_CHECK(printXUsageMessage = (*env)->GetStaticMethodID(env, cls,
"printXUsageMessage", "(Z)V"));
(*env)->CallStaticVoidMethod(env, cls, printXUsageMessage, printTo);
} else {
NULL_CHECK(initHelp = (*env)->GetStaticMethodID(env, cls,
"initHelpMessage", "(Ljava/lang/String;)V"));
NULL_CHECK(vmSelect = (*env)->GetStaticMethodID(env, cls, "appendVmSelectMessage",
"(Ljava/lang/String;Ljava/lang/String;)V"));
NULL_CHECK(vmSynonym = (*env)->GetStaticMethodID(env, cls,
"appendVmSynonymMessage",
"(Ljava/lang/String;Ljava/lang/String;)V"));
NULL_CHECK(printHelp = (*env)->GetStaticMethodID(env, cls,
"printHelpMessage", "(Z)V"));
NULL_CHECK(jprogname = (*env)->NewStringUTF(env, _program_name));
/* Initialize the usage message with the usual preamble */
(*env)->CallStaticVoidMethod(env, cls, initHelp, jprogname);
CHECK_EXCEPTION_RETURN();
/* Assemble the other variant part of the usage */
for (i=1; i<knownVMsCount; i++) {
if (knownVMs[i].flag == VM_KNOWN) {
NULL_CHECK(vm1 = (*env)->NewStringUTF(env, knownVMs[i].name));
NULL_CHECK(vm2 = (*env)->NewStringUTF(env, knownVMs[i].name+1));
(*env)->CallStaticVoidMethod(env, cls, vmSelect, vm1, vm2);
CHECK_EXCEPTION_RETURN();
}
}
for (i=1; i<knownVMsCount; i++) {
if (knownVMs[i].flag == VM_ALIASED_TO) {
NULL_CHECK(vm1 = (*env)->NewStringUTF(env, knownVMs[i].name));
NULL_CHECK(vm2 = (*env)->NewStringUTF(env, knownVMs[i].alias+1));
(*env)->CallStaticVoidMethod(env, cls, vmSynonym, vm1, vm2);
CHECK_EXCEPTION_RETURN();
}
}
/* Complete the usage message and print to stderr*/
(*env)->CallStaticVoidMethod(env, cls, printHelp, printTo);
}
return;
}
/*
* 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,
--> --------------------
--> maximum size reached
--> --------------------
¤ Dauer der Verarbeitung: 0.91 Sekunden
(vorverarbeitet)
¤
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