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lightning-sunbird  0.9+nobinonly
JavaVMFramework.cpp
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00001 /* ***** BEGIN LICENSE BLOCK *****
00002  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
00003  *
00004  * The contents of this file are subject to the Mozilla Public License Version
00005  * 1.1 (the "License"); you may not use this file except in compliance with
00006  * the License. You may obtain a copy of the License at
00007  * http://www.mozilla.org/MPL/
00008  *
00009  * Software distributed under the License is distributed on an "AS IS" basis,
00010  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
00011  * for the specific language governing rights and limitations under the
00012  * License.
00013  *
00014  * The Original Code is the MRJ Carbon OJI Plugin.
00015  *
00016  * The Initial Developer of the Original Code is
00017  * Netscape Communications Corp.
00018  * Portions created by the Initial Developer are Copyright (C) 2001
00019  * the Initial Developer. All Rights Reserved.
00020  *
00021  * Contributor(s):
00022  *   Patrick C. Beard <beard@netscape.com>
00023  *
00024  * Alternatively, the contents of this file may be used under the terms of
00025  * either of the GNU General Public License Version 2 or later (the "GPL"),
00026  * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
00027  * in which case the provisions of the GPL or the LGPL are applicable instead
00028  * of those above. If you wish to allow use of your version of this file only
00029  * under the terms of either the GPL or the LGPL, and not to allow others to
00030  * use your version of this file under the terms of the MPL, indicate your
00031  * decision by deleting the provisions above and replace them with the notice
00032  * and other provisions required by the GPL or the LGPL. If you do not delete
00033  * the provisions above, a recipient may use your version of this file under
00034  * the terms of any one of the MPL, the GPL or the LGPL.
00035  *
00036  * ***** END LICENSE BLOCK ***** */
00037 
00038 /*
00039     JavaVMFramework.cpp
00040     
00041     CFM glue for the JavaVM.framework.
00042     
00043     by Patrick C. Beard.
00044  */
00045 
00046 #include <jni.h>
00047 #include <JavaControl.h>
00048 
00049 #include <CFURL.h>
00050 #include <CFBundle.h>
00051 #include <CFString.h>
00052 #include <MacErrors.h>
00053 
00054 static CFBundleRef getBundle(CFStringRef frameworkPath)
00055 {
00056        CFBundleRef bundle = NULL;
00057     
00058        //     Make a CFURLRef from the CFString representation of the bundle's path.
00059        //     See the Core Foundation URL Services chapter for details.
00060        CFURLRef bundleURL = CFURLCreateWithFileSystemPath(NULL, frameworkPath, kCFURLPOSIXPathStyle, true);
00061        if (bundleURL != NULL) {
00062         bundle = CFBundleCreate(NULL, bundleURL);
00063         if (bundle != NULL)
00064               CFBundleLoadExecutable(bundle);
00065         CFRelease(bundleURL);
00066        }
00067        
00068        return bundle;
00069 }
00070 
00071 #if DEBUG
00072 static void* getSystemFunction(CFStringRef functionName)
00073 {
00074   static CFBundleRef systemBundle = getBundle(CFSTR("/System/Library/Frameworks/System.framework"));
00075   if (systemBundle) return CFBundleGetFunctionPointerForName(systemBundle, functionName);
00076   return NULL;
00077 }
00078 
00079 // Useful Carbon-CFM debugging tool, printf that goes to the system console.
00080 
00081 typedef int (*printf_proc_ptr) (const char* format, ...);
00082 static printf_proc_ptr kprintf = (printf_proc_ptr) getSystemFunction(CFSTR("printf"));
00083 
00084 #endif
00085 
00086 // CFM glue functions for JNI_GetDefaultJavaVMInitArgs & JNI_CreateJavaVM.
00087 
00088 static void* getJavaVMFunction(CFStringRef functionName)
00089 {
00090   static CFBundleRef javaBundle = getBundle(CFSTR("/System/Library/Frameworks/JavaVM.framework"));
00091   if (javaBundle) return CFBundleGetFunctionPointerForName(javaBundle, functionName);
00092   return NULL;
00093 }
00094 
00095 typedef jint JNICALL (*JNI_GetDefaultJavaVMInitArgs_proc_ptr) (void *args);
00096 static JNI_GetDefaultJavaVMInitArgs_proc_ptr _JNI_GetDefaultJavaVMInitArgs = (JNI_GetDefaultJavaVMInitArgs_proc_ptr) getJavaVMFunction(CFSTR("JNI_GetDefaultJavaVMInitArgs"));
00097 
00098 _JNI_IMPORT_OR_EXPORT_ jint JNICALL
00099 JNI_GetDefaultJavaVMInitArgs(void *args)
00100 {
00101 #if DEBUG
00102     kprintf("_JNI_GetDefaultJavaVMInitArgs = 0x%08X\n", _JNI_GetDefaultJavaVMInitArgs);
00103 #endif
00104     if (_JNI_GetDefaultJavaVMInitArgs) return _JNI_GetDefaultJavaVMInitArgs(args);
00105     return -1;
00106 }
00107 
00108 typedef jint JNICALL (*JNI_CreateJavaVM_proc_ptr) (JavaVM **pvm, void **penv, void *args);
00109 static JNI_CreateJavaVM_proc_ptr _JNI_CreateJavaVM = (JNI_CreateJavaVM_proc_ptr) getJavaVMFunction(CFSTR("JNI_CreateJavaVM"));
00110 
00111 _JNI_IMPORT_OR_EXPORT_ jint JNICALL
00112 JNI_CreateJavaVM(JavaVM **pvm, void **penv, void *args)
00113 {
00114 #if DEBUG
00115     kprintf("_JNI_CreateJavaVM = 0x%08X\n", _JNI_CreateJavaVM);
00116 #endif
00117     if (_JNI_CreateJavaVM) return _JNI_CreateJavaVM(pvm, penv, args);
00118     return -1;
00119 }