JDK14/Java14源码在线阅读
/*
* Copyright (c) 1997, 2019, 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.
*/
#include <windows.h>
#include <io.h>
#include <process.h>
#include <stdlib.h>
#include <stdio.h>
#include <stdarg.h>
#include <string.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <wtypes.h>
#include <commctrl.h>
#include <assert.h>
#include <jni.h>
#include "java.h"
#define JVM_DLL "jvm.dll"
#define JAVA_DLL "java.dll"
/*
* Prototypes.
*/
static jboolean GetJVMPath(const char *jrepath, const char *jvmtype,
char *jvmpath, jint jvmpathsize);
static jboolean GetJREPath(char *path, jint pathsize);
#ifdef USE_REGISTRY_LOOKUP
jboolean GetPublicJREHome(char *buf, jint bufsize);
#endif
/* We supports warmup for UI stack that is performed in parallel
* to VM initialization.
* This helps to improve startup of UI application as warmup phase
* might be long due to initialization of OS or hardware resources.
* It is not CPU bound and therefore it does not interfere with VM init.
* Obviously such warmup only has sense for UI apps and therefore it needs
* to be explicitly requested by passing -Dsun.awt.warmup=true property
* (this is always the case for plugin/javaws).
*
* Implementation launches new thread after VM starts and use it to perform
* warmup code (platform dependent).
* This thread is later reused as AWT toolkit thread as graphics toolkit
* often assume that they are used from the same thread they were launched on.
*
* At the moment we only support warmup for D3D. It only possible on windows
* and only if other flags do not prohibit this (e.g. OpenGL support requested).
*/
#undef ENABLE_AWT_PRELOAD
#ifndef JAVA_ARGS /* turn off AWT preloading for javac, jar, etc */
/* CR6999872: fastdebug crashes if awt library is loaded before JVM is
* initialized*/
#if !defined(DEBUG)
#define ENABLE_AWT_PRELOAD
#endif
#endif
#ifdef ENABLE_AWT_PRELOAD
/* "AWT was preloaded" flag;
* turned on by AWTPreload().
*/
int awtPreloaded = 0;
/* Calls a function with the name specified
* the function must be int(*fn)(void).
*/
int AWTPreload(const char *funcName);
/* stops AWT preloading */
void AWTPreloadStop();
/* D3D preloading */
/* -1: not initialized; 0: OFF, 1: ON */
int awtPreloadD3D = -1;
/* command line parameter to swith D3D preloading on */
#define PARAM_PRELOAD_D3D "-Dsun.awt.warmup"
/* D3D/OpenGL management parameters */
#define PARAM_NODDRAW "-Dsun.java2d.noddraw"
#define PARAM_D3D "-Dsun.java2d.d3d"
#define PARAM_OPENGL "-Dsun.java2d.opengl"
/* funtion in awt.dll (src/windows/native/sun/java2d/d3d/D3DPipelineManager.cpp) */
#define D3D_PRELOAD_FUNC "preloadD3D"
/* Extracts value of a parameter with the specified name
* from command line argument (returns pointer in the argument).
* Returns NULL if the argument does not contains the parameter.
* e.g.:
* GetParamValue("theParam", "theParam=value") returns pointer to "value".
*/
const char * GetParamValue(const char *paramName, const char *arg) {
size_t nameLen = JLI_StrLen(paramName);
if (JLI_StrNCmp(paramName, arg, nameLen) == 0) {
/* arg[nameLen] is valid (may contain final NULL) */
if (arg[nameLen] == '=') {
return arg + nameLen + 1;
}
}
return NULL;
}
/* Checks if commandline argument contains property specified
* and analyze it as boolean property (true/false).
* Returns -1 if the argument does not contain the parameter;
* Returns 1 if the argument contains the parameter and its value is "true";
* Returns 0 if the argument contains the parameter and its value is "false".
*/
int GetBoolParamValue(const char *paramName, const char *arg) {
const char * paramValue = GetParamValue(paramName, arg);
if (paramValue != NULL) {
if (JLI_StrCaseCmp(paramValue, "true") == 0) {
return 1;
}
if (JLI_StrCaseCmp(paramValue, "false") == 0) {
return 0;
}
}
return -1;
}
#endif /* ENABLE_AWT_PRELOAD */
static jboolean _isjavaw = JNI_FALSE;
jboolean
IsJavaw()
{
return _isjavaw;
}
/*
*
*/
void
CreateExecutionEnvironment(int *pargc, char ***pargv,
char *jrepath, jint so_jrepath,
char *jvmpath, jint so_jvmpath,
char *jvmcfg, jint so_jvmcfg) {
char *jvmtype;
int i = 0;
char** argv = *pargv;
/* Find out where the JRE is that we will be using. */
if (!GetJREPath(jrepath, so_jrepath)) {
JLI_ReportErrorMessage(JRE_ERROR1);
exit(2);
}
JLI_Snprintf(jvmcfg, so_jvmcfg, "%s%slib%sjvm.cfg",
jrepath, FILESEP, FILESEP);
/* Find the specified JVM type */
if (ReadKnownVMs(jvmcfg, JNI_FALSE) < 1) {
JLI_ReportErrorMessage(CFG_ERROR7);
exit(1);
}
jvmtype = CheckJvmType(pargc, pargv, JNI_FALSE);
if (JLI_StrCmp(jvmtype, "ERROR") == 0) {
JLI_ReportErrorMessage(CFG_ERROR9);
exit(4);
}
jvmpath[0] = '\0';
if (!GetJVMPath(jrepath, jvmtype, jvmpath, so_jvmpath)) {
JLI_ReportErrorMessage(CFG_ERROR8, jvmtype, jvmpath);
exit(4);
}
/* If we got here, jvmpath has been correctly initialized. */
/* Check if we need preload AWT */
#ifdef ENABLE_AWT_PRELOAD
argv = *pargv;
for (i = 0; i < *pargc ; i++) {
/* Tests the "turn on" parameter only if not set yet. */
if (awtPreloadD3D < 0) {
if (GetBoolParamValue(PARAM_PRELOAD_D3D, argv[i]) == 1) {
awtPreloadD3D = 1;
}
}
/* Test parameters which can disable preloading if not already disabled. */
if (awtPreloadD3D != 0) {
if (GetBoolParamValue(PARAM_NODDRAW, argv[i]) == 1
|| GetBoolParamValue(PARAM_D3D, argv[i]) == 0
|| GetBoolParamValue(PARAM_OPENGL, argv[i]) == 1)
{
awtPreloadD3D = 0;
/* no need to test the rest of the parameters */
break;
}
}
}
#endif /* ENABLE_AWT_PRELOAD */
}
static jboolean
LoadMSVCRT()
{
// Only do this once
static int loaded = 0;
char crtpath[MAXPATHLEN];
if (!loaded) {
/*
* The Microsoft C Runtime Library needs to be loaded first. A copy is
* assumed to be present in the "JRE path" directory. If it is not found
* there (or "JRE path" fails to resolve), skip the explicit load and let
* nature take its course, which is likely to be a failure to execute.
* The makefiles will provide the correct lib contained in quotes in the
* macro MSVCR_DLL_NAME.
*/
#ifdef MSVCR_DLL_NAME
if (GetJREPath(crtpath, MAXPATHLEN)) {
if (JLI_StrLen(crtpath) + JLI_StrLen("\\bin\\") +
JLI_StrLen(MSVCR_DLL_NAME) >= MAXPATHLEN) {
JLI_ReportErrorMessage(JRE_ERROR11);
return JNI_FALSE;
}
(void)JLI_StrCat(crtpath, "\\bin\\" MSVCR_DLL_NAME); /* Add crt dll */
JLI_TraceLauncher("CRT path is %s\n", crtpath);
if (_access(crtpath, 0) == 0) {
if (LoadLibrary(crtpath) == 0) {
JLI_ReportErrorMessage(DLL_ERROR4, crtpath);
return JNI_FALSE;
}
}
}
#endif /* MSVCR_DLL_NAME */
#ifdef MSVCP_DLL_NAME
if (GetJREPath(crtpath, MAXPATHLEN)) {
if (JLI_StrLen(crtpath) + JLI_StrLen("\\bin\\") +
JLI_StrLen(MSVCP_DLL_NAME) >= MAXPATHLEN) {
JLI_ReportErrorMessage(JRE_ERROR11);
return JNI_FALSE;
}
(void)JLI_StrCat(crtpath, "\\bin\\" MSVCP_DLL_NAME); /* Add prt dll */
JLI_TraceLauncher("PRT path is %s\n", crtpath);
if (_access(crtpath, 0) == 0) {
if (LoadLibrary(crtpath) == 0) {
JLI_ReportErrorMessage(DLL_ERROR4, crtpath);
return JNI_FALSE;
}
}
}
#endif /* MSVCP_DLL_NAME */
loaded = 1;
}
return JNI_TRUE;
}
/*
* Find path to JRE based on .exe's location or registry settings.
*/
jboolean
GetJREPath(char *path, jint pathsize)
{
char javadll[MAXPATHLEN];
struct stat s;
if (GetApplicationHome(path, pathsize)) {
/* Is JRE co-located with the application? */
JLI_Snprintf(javadll, sizeof(javadll), "%s\\bin\\" JAVA_DLL, path);
if (stat(javadll, &s) == 0) {
JLI_TraceLauncher("JRE path is %s\n", path);
return JNI_TRUE;
}
/* ensure storage for path + \jre + NULL */
if ((JLI_StrLen(path) + 4 + 1) > (size_t) pathsize) {
JLI_TraceLauncher("Insufficient space to store JRE path\n");
return JNI_FALSE;
}
/* Does this app ship a private JRE in <apphome>\jre directory? */
JLI_Snprintf(javadll, sizeof (javadll), "%s\\jre\\bin\\" JAVA_DLL, path);
if (stat(javadll, &s) == 0) {
JLI_StrCat(path, "\\jre");
JLI_TraceLauncher("JRE path is %s\n", path);
return JNI_TRUE;
}
}
/* Try getting path to JRE from path to JLI.DLL */
if (GetApplicationHomeFromDll(path, pathsize)) {
JLI_Snprintf(javadll, sizeof(javadll), "%s\\bin\\" JAVA_DLL, path);
if (stat(javadll, &s) == 0) {
JLI_TraceLauncher("JRE path is %s\n", path);
return JNI_TRUE;
}
}
#ifdef USE_REGISTRY_LOOKUP
/* Lookup public JRE using Windows registry. */
if (GetPublicJREHome(path, pathsize)) {
JLI_TraceLauncher("JRE path is %s\n", path);
return JNI_TRUE;
}
#endif
JLI_ReportErrorMessage(JRE_ERROR8 JAVA_DLL);
return JNI_FALSE;
}
/*
* Given a JRE location and a JVM type, construct what the name the
* JVM shared library will be. Return true, if such a library
* exists, false otherwise.
*/
static jboolean
GetJVMPath(const char *jrepath, const char *jvmtype,
char *jvmpath, jint jvmpathsize)
{
struct stat s;
if (JLI_StrChr(jvmtype, '/') || JLI_StrChr(jvmtype, '\\')) {
JLI_Snprintf(jvmpath, jvmpathsize, "%s\\" JVM_DLL, jvmtype);
} else {
JLI_Snprintf(jvmpath, jvmpathsize, "%s\\bin\\%s\\" JVM_DLL,
jrepath, jvmtype);
}
if (stat(jvmpath, &s) == 0) {
return JNI_TRUE;
} else {
return JNI_FALSE;
}
}
/*
* Load a jvm from "jvmpath" and initialize the invocation functions.
*/
jboolean
LoadJavaVM(const char *jvmpath, InvocationFunctions *ifn)
{
HINSTANCE handle;
JLI_TraceLauncher("JVM path is %s\n", jvmpath);
/*
* The Microsoft C Runtime Library needs to be loaded first. A copy is
* assumed to be present in the "JRE path" directory. If it is not found
* there (or "JRE path" fails to resolve), skip the explicit load and let
* nature take its course, which is likely to be a failure to execute.
*
*/
LoadMSVCRT();
/* Load the Java VM DLL */
if ((handle = LoadLibrary(jvmpath)) == 0) {
JLI_ReportErrorMessage(DLL_ERROR4, (char *)jvmpath);
return JNI_FALSE;
}
/* Now get the function addresses */
ifn->CreateJavaVM =
(void *)GetProcAddress(handle, "JNI_CreateJavaVM");
ifn->GetDefaultJavaVMInitArgs =
(void *)GetProcAddress(handle, "JNI_GetDefaultJavaVMInitArgs");
if (ifn->CreateJavaVM == 0 || ifn->GetDefaultJavaVMInitArgs == 0) {
JLI_ReportErrorMessage(JNI_ERROR1, (char *)jvmpath);
return JNI_FALSE;
}
return JNI_TRUE;
}
/*
* Removes the trailing file name and one sub-folder from a path.
* If buf is "c:\foo\bin\javac", then put "c:\foo" into buf.
*/
jboolean
TruncatePath(char *buf)
{
char *cp;
*JLI_StrRChr(buf, '\\') = '\0'; /* remove .exe file name */
if ((cp = JLI_StrRChr(buf, '\\')) == 0) {
/* This happens if the application is in a drive root, and
* there is no bin directory. */
buf[0] = '\0';
return JNI_FALSE;
}
*cp = '\0'; /* remove the bin\ part */
return JNI_TRUE;
}
/*
* Retrieves the path to the JRE home by locating the executable file
* of the current process and then truncating the path to the executable
*/
jboolean
GetApplicationHome(char *buf, jint bufsize)
{
GetModuleFileName(NULL, buf, bufsize);
return TruncatePath(buf);
}
/*
* Retrieves the path to the JRE home by locating JLI.DLL and
* then truncating the path to JLI.DLL
*/
jboolean
GetApplicationHomeFromDll(char *buf, jint bufsize)
{
HMODULE module;
DWORD flags = GET_MODULE_HANDLE_EX_FLAG_FROM_ADDRESS |
GET_MODULE_HANDLE_EX_FLAG_UNCHANGED_REFCOUNT;
if (GetModuleHandleEx(flags, (LPCSTR)&GetJREPath, &module) != 0) {
if (GetModuleFileName(module, buf, bufsize) != 0) {
return TruncatePath(buf);
}
}
return JNI_FALSE;
}
/*
* Support for doing cheap, accurate interval timing.
*/
static jboolean counterAvailable = JNI_FALSE;
static jboolean counterInitialized = JNI_FALSE;
static LARGE_INTEGER counterFrequency;
jlong CounterGet()
{
LARGE_INTEGER count;
if (!counterInitialized) {
counterAvailable = QueryPerformanceFrequency(&counterFrequency);
counterInitialized = JNI_TRUE;
}
if (!counterAvailable) {
return 0;
}
QueryPerformanceCounter(&count);
return (jlong)(count.QuadPart);
}
jlong Counter2Micros(jlong counts)
{
if (!counterAvailable || !counterInitialized) {
return 0;
}
return (counts * 1000 * 1000)/counterFrequency.QuadPart;
}
/*
* windows snprintf does not guarantee a null terminator in the buffer,
* if the computed size is equal to or greater than the buffer size,
* as well as error conditions. This function guarantees a null terminator
* under all these conditions. An unreasonable buffer or size will return
* an error value. Under all other conditions this function will return the
* size of the bytes actually written minus the null terminator, similar
* to ansi snprintf api. Thus when calling this function the caller must
* ensure storage for the null terminator.
*/
int
JLI_Snprintf(char* buffer, size_t size, const char* format, ...) {
int rc;
va_list vl;
if (size == 0 || buffer == NULL)
return -1;
buffer[0] = '\0';
va_start(vl, format);
rc = vsnprintf(buffer, size, format, vl);
va_end(vl);
/* force a null terminator, if something is amiss */
if (rc < 0) {
/* apply ansi semantics */
buffer[size - 1] = '\0';
return (int)size;
} else if (rc == size) {
/* force a null terminator */
buffer[size - 1] = '\0';
}
return rc;
}
/* taken from hotspot and slightly adjusted for jli lib;
* creates a UNC/ELP path from input 'path'
* the return buffer is allocated in C heap and needs to be freed using
* JLI_MemFree by the caller.
*/
static wchar_t* create_unc_path(const char* path, errno_t* err) {
wchar_t* wpath = NULL;
size_t converted_chars = 0;
size_t path_len = strlen(path) + 1; /* includes the terminating NULL */
if (path[0] == '\\' && path[1] == '\\') {
if (path[2] == '?' && path[3] == '\\') {
/* if it already has a \\?\ don't do the prefix */
wpath = (wchar_t*) JLI_MemAlloc(path_len * sizeof(wchar_t));
if (wpath != NULL) {
*err = mbstowcs_s(&converted_chars, wpath, path_len, path, path_len);
} else {
*err = ENOMEM;
}
} else {
/* only UNC pathname includes double slashes here */
wpath = (wchar_t*) JLI_MemAlloc((path_len + 7) * sizeof(wchar_t));
if (wpath != NULL) {
wcscpy(wpath, L"\\\\?\\UNC\0");
*err = mbstowcs_s(&converted_chars, &wpath[7], path_len, path, path_len);
} else {
*err = ENOMEM;
}
}
} else {
wpath = (wchar_t*) JLI_MemAlloc((path_len + 4) * sizeof(wchar_t));
if (wpath != NULL) {
wcscpy(wpath, L"\\\\?\\\0");
*err = mbstowcs_s(&converted_chars, &wpath[4], path_len, path, path_len);
} else {
*err = ENOMEM;
}
}
return wpath;
}
int JLI_Open(const char* name, int flags) {
int fd;
if (strlen(name) < MAX_PATH) {
fd = _open(name, flags);
} else {
errno_t err = ERROR_SUCCESS;
wchar_t* wpath = create_unc_path(name, &err);
if (err != ERROR_SUCCESS) {
if (wpath != NULL) JLI_MemFree(wpath);
errno = err;
return -1;
}
fd = _wopen(wpath, flags);
if (fd == -1) {
errno = GetLastError();
}
JLI_MemFree(wpath);
}
return fd;
}
JNIEXPORT void JNICALL
JLI_ReportErrorMessage(const char* fmt, ...) {
va_list vl;
va_start(vl,fmt);
if (IsJavaw()) {
char *message;
/* get the length of the string we need */
int n = _vscprintf(fmt, vl);
message = (char *)JLI_MemAlloc(n + 1);
_vsnprintf(message, n, fmt, vl);
message[n]='\0';
MessageBox(NULL, message, "Java Virtual Machine Launcher",
(MB_OK|MB_ICONSTOP|MB_APPLMODAL));
JLI_MemFree(message);
} else {
vfprintf(stderr, fmt, vl);
fprintf(stderr, "\n");
}
va_end(vl);
}
/*
* Just like JLI_ReportErrorMessage, except that it concatenates the system
* error message if any, its upto the calling routine to correctly
* format the separation of the messages.
*/
JNIEXPORT void JNICALL
JLI_ReportErrorMessageSys(const char *fmt, ...)
{
va_list vl;
int save_errno = errno;
DWORD errval;
jboolean freeit = JNI_FALSE;
char *errtext = NULL;
va_start(vl, fmt);
if ((errval = GetLastError()) != 0) { /* Platform SDK / DOS Error */
int n = FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM|
FORMAT_MESSAGE_IGNORE_INSERTS|FORMAT_MESSAGE_ALLOCATE_BUFFER,
NULL, errval, 0, (LPTSTR)&errtext, 0, NULL);
if (errtext == NULL || n == 0) { /* Paranoia check */
errtext = "";
n = 0;
} else {
freeit = JNI_TRUE;
if (n > 2) { /* Drop final CR, LF */
if (errtext[n - 1] == '\n') n--;
if (errtext[n - 1] == '\r') n--;
errtext[n] = '\0';
}
}
} else { /* C runtime error that has no corresponding DOS error code */
errtext = strerror(save_errno);
}
if (IsJavaw()) {
char *message;
int mlen;
/* get the length of the string we need */
int len = mlen = _vscprintf(fmt, vl) + 1;
if (freeit) {
mlen += (int)JLI_StrLen(errtext);
}
message = (char *)JLI_MemAlloc(mlen);
_vsnprintf(message, len, fmt, vl);
message[len]='\0';
if (freeit) {
JLI_StrCat(message, errtext);
}
MessageBox(NULL, message, "Java Virtual Machine Launcher",
(MB_OK|MB_ICONSTOP|MB_APPLMODAL));
JLI_MemFree(message);
} else {
vfprintf(stderr, fmt, vl);
if (freeit) {
fprintf(stderr, "%s", errtext);
}
}
if (freeit) {
(void)LocalFree((HLOCAL)errtext);
}
va_end(vl);
}
JNIEXPORT void JNICALL
JLI_ReportExceptionDescription(JNIEnv * env) {
if (IsJavaw()) {
/*
* This code should be replaced by code which opens a window with
* the exception detail message, for now atleast put a dialog up.
*/
MessageBox(NULL, "A Java Exception has occurred.", "Java Virtual Machine Launcher",
(MB_OK|MB_ICONSTOP|MB_APPLMODAL));
} else {
(*env)->ExceptionDescribe(env);
}
}
/*
* Wrapper for platform dependent unsetenv function.
*/
int
UnsetEnv(char *name)
{
int ret;
char *buf = JLI_MemAlloc(JLI_StrLen(name) + 2);
buf = JLI_StrCat(JLI_StrCpy(buf, name), "=");
ret = _putenv(buf);
JLI_MemFree(buf);
return (ret);
}
/* --- Splash Screen shared library support --- */
static const char* SPLASHSCREEN_SO = "\\bin\\splashscreen.dll";
static HMODULE hSplashLib = NULL;
void* SplashProcAddress(const char* name) {
char libraryPath[MAXPATHLEN]; /* some extra space for JLI_StrCat'ing SPLASHSCREEN_SO */
if (!GetJREPath(libraryPath, MAXPATHLEN)) {
return NULL;
}
if (JLI_StrLen(libraryPath)+JLI_StrLen(SPLASHSCREEN_SO) >= MAXPATHLEN) {
return NULL;
}
JLI_StrCat(libraryPath, SPLASHSCREEN_SO);
if (!hSplashLib) {
hSplashLib = LoadLibrary(libraryPath);
}
if (hSplashLib) {
return GetProcAddress(hSplashLib, name);
} else {
return NULL;
}
}
/*
* Signature adapter for _beginthreadex().
*/
static unsigned __stdcall ThreadJavaMain(void* args) {
return (unsigned)JavaMain(args);
}
/*
* Block current thread and continue execution in a new thread.
*/
int
CallJavaMainInNewThread(jlong stack_size, void* args) {
int rslt = 0;
unsigned thread_id;
#ifndef STACK_SIZE_PARAM_IS_A_RESERVATION
#define STACK_SIZE_PARAM_IS_A_RESERVATION (0x10000)
#endif
/*
* STACK_SIZE_PARAM_IS_A_RESERVATION is what we want, but it's not
* supported on older version of Windows. Try first with the flag; and
* if that fails try again without the flag. See MSDN document or HotSpot
* source (os_win32.cpp) for details.
*/
HANDLE thread_handle =
(HANDLE)_beginthreadex(NULL,
(unsigned)stack_size,
ThreadJavaMain,
args,
STACK_SIZE_PARAM_IS_A_RESERVATION,
&thread_id);
if (thread_handle == NULL) {
thread_handle =
(HANDLE)_beginthreadex(NULL,
(unsigned)stack_size,
ThreadJavaMain,
args,
0,
&thread_id);
}
/* AWT preloading (AFTER main thread start) */
#ifdef ENABLE_AWT_PRELOAD
/* D3D preloading */
if (awtPreloadD3D != 0) {
char *envValue;
/* D3D routines checks env.var J2D_D3D if no appropriate
* command line params was specified
*/
envValue = getenv("J2D_D3D");
if (envValue != NULL && JLI_StrCaseCmp(envValue, "false") == 0) {
awtPreloadD3D = 0;
}
/* Test that AWT preloading isn't disabled by J2D_D3D_PRELOAD env.var */
envValue = getenv("J2D_D3D_PRELOAD");
if (envValue != NULL && JLI_StrCaseCmp(envValue, "false") == 0) {
awtPreloadD3D = 0;
}
if (awtPreloadD3D < 0) {
/* If awtPreloadD3D is still undefined (-1), test
* if it is turned on by J2D_D3D_PRELOAD env.var.
* By default it's turned OFF.
*/
awtPreloadD3D = 0;
if (envValue != NULL && JLI_StrCaseCmp(envValue, "true") == 0) {
awtPreloadD3D = 1;
}
}
}
if (awtPreloadD3D) {
AWTPreload(D3D_PRELOAD_FUNC);
}
#endif /* ENABLE_AWT_PRELOAD */
if (thread_handle) {
WaitForSingleObject(thread_handle, INFINITE);
GetExitCodeThread(thread_handle, &rslt);
CloseHandle(thread_handle);
} else {
rslt = JavaMain(args);
}
#ifdef ENABLE_AWT_PRELOAD
if (awtPreloaded) {
AWTPreloadStop();
}
#endif /* ENABLE_AWT_PRELOAD */
return rslt;
}
/*
* The implementation for finding classes from the bootstrap
* class loader, refer to java.h
*/
static FindClassFromBootLoader_t *findBootClass = NULL;
jclass FindBootStrapClass(JNIEnv *env, const char *classname)
{
HMODULE hJvm;
if (findBootClass == NULL) {
hJvm = GetModuleHandle(JVM_DLL);
if (hJvm == NULL) return NULL;
/* need to use the demangled entry point */
findBootClass = (FindClassFromBootLoader_t *)GetProcAddress(hJvm,
"JVM_FindClassFromBootLoader");
if (findBootClass == NULL) {
JLI_ReportErrorMessage(DLL_ERROR4, "JVM_FindClassFromBootLoader");
return NULL;
}
}
return findBootClass(env, classname);
}
void
InitLauncher(boolean javaw)
{
INITCOMMONCONTROLSEX icx;
/*
* Required for javaw mode MessageBox output as well as for
* HotSpot -XX:+ShowMessageBoxOnError in java mode, an empty
* flag field is sufficient to perform the basic UI initialization.
*/
memset(&icx, 0, sizeof(INITCOMMONCONTROLSEX));
icx.dwSize = sizeof(INITCOMMONCONTROLSEX);
InitCommonControlsEx(&icx);
_isjavaw = javaw;
JLI_SetTraceLauncher();
}
/* ============================== */
/* AWT preloading */
#ifdef ENABLE_AWT_PRELOAD
typedef int FnPreloadStart(void);
typedef void FnPreloadStop(void);
static FnPreloadStop *fnPreloadStop = NULL;
static HMODULE hPreloadAwt = NULL;
/*
* Starts AWT preloading
*/
int AWTPreload(const char *funcName)
{
int result = -1;
/* load AWT library once (if several preload function should be called) */
if (hPreloadAwt == NULL) {
/* awt.dll is not loaded yet */
char libraryPath[MAXPATHLEN];
size_t jrePathLen = 0;
HMODULE hJava = NULL;
HMODULE hVerify = NULL;
while (1) {
/* awt.dll depends on jvm.dll & java.dll;
* jvm.dll is already loaded, so we need only java.dll;
* java.dll depends on MSVCRT lib & verify.dll.
*/
if (!GetJREPath(libraryPath, MAXPATHLEN)) {
break;
}
/* save path length */
jrePathLen = JLI_StrLen(libraryPath);
if (jrePathLen + JLI_StrLen("\\bin\\verify.dll") >= MAXPATHLEN) {
/* jre path is too long, the library path will not fit there;
* report and abort preloading
*/
JLI_ReportErrorMessage(JRE_ERROR11);
break;
}
/* load msvcrt 1st */
LoadMSVCRT();
/* load verify.dll */
JLI_StrCat(libraryPath, "\\bin\\verify.dll");
hVerify = LoadLibrary(libraryPath);
if (hVerify == NULL) {
break;
}
/* restore jrePath */
libraryPath[jrePathLen] = 0;
/* load java.dll */
JLI_StrCat(libraryPath, "\\bin\\" JAVA_DLL);
hJava = LoadLibrary(libraryPath);
if (hJava == NULL) {
break;
}
/* restore jrePath */
libraryPath[jrePathLen] = 0;
/* load awt.dll */
JLI_StrCat(libraryPath, "\\bin\\awt.dll");
hPreloadAwt = LoadLibrary(libraryPath);
if (hPreloadAwt == NULL) {
break;
}
/* get "preloadStop" func ptr */
fnPreloadStop = (FnPreloadStop *)GetProcAddress(hPreloadAwt, "preloadStop");
break;
}
}
if (hPreloadAwt != NULL) {
FnPreloadStart *fnInit = (FnPreloadStart *)GetProcAddress(hPreloadAwt, funcName);
if (fnInit != NULL) {
/* don't forget to stop preloading */
awtPreloaded = 1;
result = fnInit();
}
}
return result;
}
/*
* Terminates AWT preloading
*/
void AWTPreloadStop() {
if (fnPreloadStop != NULL) {
fnPreloadStop();
}
}
#endif /* ENABLE_AWT_PRELOAD */
int
JVMInit(InvocationFunctions* ifn, jlong threadStackSize,
int argc, char **argv,
int mode, char *what, int ret)
{
ShowSplashScreen();
return ContinueInNewThread(ifn, threadStackSize, argc, argv, mode, what, ret);
}
void
PostJVMInit(JNIEnv *env, jclass mainClass, JavaVM *vm)
{
// stubbed out for windows and *nixes.
}
void
RegisterThread()
{
// stubbed out for windows and *nixes.
}
/*
* on windows, we return a false to indicate this option is not applicable
*/
jboolean
ProcessPlatformOption(const char *arg)
{
return JNI_FALSE;
}
/*
* At this point we have the arguments to the application, and we need to
* check with original stdargs in order to compare which of these truly
* needs expansion. cmdtoargs will specify this if it finds a bare
* (unquoted) argument containing a glob character(s) ie. * or ?
*/
jobjectArray
CreateApplicationArgs(JNIEnv *env, char **strv, int argc)
{
int i, j, idx;
size_t tlen;
jobjectArray outArray, inArray;
char *arg, **nargv;
jboolean needs_expansion = JNI_FALSE;
jmethodID mid;
int stdargc;
StdArg *stdargs;
int *appArgIdx;
int isTool;
jclass cls = GetLauncherHelperClass(env);
NULL_CHECK0(cls);
if (argc == 0) {
return NewPlatformStringArray(env, strv, argc);
}
// the holy grail we need to compare with.
stdargs = JLI_GetStdArgs();
stdargc = JLI_GetStdArgc();
// sanity check, this should never happen
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