1 /* 2 * Copyright (c) 1995, 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 #ifdef HEADLESS 27 #error This file should not be included in headless library 28 #endif 29 30 #include "awt_p.h" 31 #include "color.h" 32 #include <X11/IntrinsicP.h> 33 #include <X11/Xatom.h> 34 #include <X11/Xmd.h> 35 #include <X11/Xutil.h> 36 #include <X11/Xproto.h> 37 #include <jni.h> 38 #include <jni_util.h> 39 #include <sys/time.h> 40 41 42 #include "java_awt_event_MouseWheelEvent.h" 43 44 extern jint getModifiers(uint32_t state, jint button, jint keyCode); 45 extern jint getButton(uint32_t button); 46 47 static Atom OLDecorDelAtom = 0; 48 static Atom MWMHints = 0; 49 static Atom DTWMHints = 0; 50 static Atom decor_list[9]; 51 52 #ifndef MAX 53 #define MAX(a,b) ((a) > (b) ? (a) : (b)) 54 #endif 55 56 #ifndef MIN 57 #define MIN(a,b) ((a) < (b) ? (a) : (b)) 58 #endif 59 60 void 61 awtJNI_ThreadYield(JNIEnv *env) { 62 63 static jclass threadClass = NULL; 64 static jmethodID yieldMethodID = NULL; 65 66 /* Initialize our java identifiers once. Checking before locking 67 * is a huge performance win. 68 */ 69 if (threadClass == NULL) { 70 // should enter a monitor here... 71 Boolean err = FALSE; 72 if (threadClass == NULL) { 73 jclass tc = (*env)->FindClass(env, "java/lang/Thread"); 74 threadClass = (*env)->NewGlobalRef(env, tc); 75 (*env)->DeleteLocalRef(env, tc); 76 if (threadClass != NULL) { 77 yieldMethodID = (*env)->GetStaticMethodID(env, 78 threadClass, 79 "yield", 80 "()V" 81 ); 82 } 83 } 84 if (yieldMethodID == NULL) { 85 threadClass = NULL; 86 err = TRUE; 87 } 88 if (err) { 89 return; 90 } 91 } /* threadClass == NULL*/ 92 93 (*env)->CallStaticVoidMethod(env, threadClass, yieldMethodID); 94 DASSERT(!((*env)->ExceptionOccurred(env))); 95 } /* awtJNI_ThreadYield() */