1 /* 2 * Copyright (c) 2011, 2013, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 26 #import <AppKit/AppKit.h> 27 #import <JavaNativeFoundation/JavaNativeFoundation.h> 28 #import <objc/message.h> 29 30 #import "ThreadUtilities.h" 31 32 33 // The following must be named "jvm", as there are extern references to it in AWT 34 JavaVM *jvm = NULL; 35 static JNIEnv *appKitEnv = NULL; 36 static jobject appkitThreadGroup = NULL; 37 static BOOL awtEmbedded = NO; 38 39 inline void attachCurrentThread(void** env) { 40 if ([NSThread isMainThread]) { 41 JavaVMAttachArgs args; 42 args.version = JNI_VERSION_1_4; 43 args.name = "AppKit Thread"; 44 args.group = appkitThreadGroup; 45 (*jvm)->AttachCurrentThreadAsDaemon(jvm, env, &args); 46 } else { 47 (*jvm)->AttachCurrentThreadAsDaemon(jvm, env, NULL); 48 } 49 } 50 51 @implementation ThreadUtilities 52 53 + (JNIEnv*)getJNIEnv { 54 AWT_ASSERT_APPKIT_THREAD; 55 if (appKitEnv == NULL) { 56 attachCurrentThread((void **)&appKitEnv); 57 } 58 return appKitEnv; 59 } 60 61 + (JNIEnv*)getJNIEnvUncached { 62 JNIEnv *env = NULL; 63 attachCurrentThread((void **)&env); 64 return env; 65 } 66 67 + (void)detachCurrentThread { 68 (*jvm)->DetachCurrentThread(jvm); 69 } 70 71 + (void)setAppkitThreadGroup:(jobject)group { 72 appkitThreadGroup = group; 73 } 74 75 + (void)performOnMainThreadWaiting:(BOOL)wait block:(void (^)())block { 76 if ([NSThread isMainThread] && wait == YES) { 77 block(); 78 } else { 79 [JNFRunLoop performOnMainThreadWaiting:wait withBlock:block]; 80 } 81 } 82 83 + (void)performOnMainThread:(SEL)aSelector on:(id)target withObject:(id)arg waitUntilDone:(BOOL)wait { 84 if ([NSThread isMainThread] && wait == YES) { 85 [target performSelector:aSelector withObject:arg]; 86 } else { 87 [JNFRunLoop performOnMainThread:aSelector on:target withObject:arg waitUntilDone:wait]; 88 } 89 } 90 91 + (void)setAWTEmbedded:(BOOL)embedded { 92 awtEmbedded = embedded; 93 } 94 95 + (BOOL)isAWTEmbedded { 96 return awtEmbedded; 97 } 98 99 @end 100 101 102 void OSXAPP_SetJavaVM(JavaVM *vm) 103 { 104 jvm = vm; 105 } 106