1/*
2 * Copyright (c) 1995, 2014, 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/*
27 * Common AWT definitions
28 */
29
30#ifndef _AWT_
31#define _AWT_
32
33#include "jvm.h"
34#include "jni_util.h"
35#include "debug_util.h"
36
37#if !defined(HEADLESS) && !defined(MACOSX)
38#include <X11/Xlib.h>
39#include <X11/Xutil.h>
40typedef char Boolean;
41#endif /* !HEADLESS && !MACOSX */
42
43
44/* The JVM instance: defined in awt_MToolkit.c */
45extern JavaVM *jvm;
46
47extern jclass tkClass;
48extern jmethodID awtLockMID;
49extern jmethodID awtUnlockMID;
50extern jmethodID awtWaitMID;
51extern jmethodID awtNotifyMID;
52extern jmethodID awtNotifyAllMID;
53extern jboolean awtLockInited;
54
55/* Perform sanity and consistency checks on AWT locking */
56#ifdef DEBUG
57#define DEBUG_AWT_LOCK
58#endif
59
60/*
61 * The following locking primitives should be defined
62 *
63#define AWT_LOCK()
64#define AWT_NOFLUSH_UNLOCK()
65#define AWT_WAIT(tm)
66#define AWT_NOTIFY()
67#define AWT_NOTIFY_ALL()
68 */
69
70/*
71 * Convenience macros based on AWT_NOFLUSH_UNLOCK
72 */
73extern void awt_output_flush();
74#define AWT_UNLOCK() AWT_FLUSH_UNLOCK()
75#define AWT_FLUSH_UNLOCK() do { \
76 awt_output_flush(); \
77 AWT_NOFLUSH_UNLOCK(); \
78} while (0)
79
80#define AWT_UNLOCK_CHECK_EXCEPTION(env) \
81 do { \
82 AWT_UNLOCK(); \
83 JNU_CHECK_EXCEPTION(env); \
84 } while (0)
85
86#define AWT_LOCK_IMPL() \
87 do { \
88 (*env)->CallStaticVoidMethod(env, tkClass, awtLockMID); \
89 if ((*env)->ExceptionCheck(env)) { \
90 (*env)->ExceptionClear(env); \
91 } \
92 } while(0)
93
94#define AWT_NOFLUSH_UNLOCK_IMPL() \
95 do { \
96 jthrowable pendingException; \
97 if ((pendingException = (*env)->ExceptionOccurred(env)) != NULL) { \
98 (*env)->ExceptionClear(env); \
99 } \
100 (*env)->CallStaticVoidMethod(env, tkClass, awtUnlockMID); \
101 if ((*env)->ExceptionCheck(env)) { \
102 (*env)->ExceptionClear(env); \
103 } \
104 if (pendingException) { \
105 (*env)->Throw(env, pendingException); \
106 } \
107 } while (0)
108#define AWT_WAIT_IMPL(tm) \
109 (*env)->CallStaticVoidMethod(env, tkClass, awtWaitMID, (jlong)(tm))
110#define AWT_NOTIFY_IMPL() \
111 (*env)->CallStaticVoidMethod(env, tkClass, awtNotifyMID)
112#define AWT_NOTIFY_ALL_IMPL() \
113 (*env)->CallStaticVoidMethod(env, tkClass, awtNotifyAllMID)
114
115/*
116 * Unfortunately AWT_LOCK debugging does not work with XAWT due to mixed
117 * Java/C use of AWT lock.
118 */
119#define AWT_LOCK() AWT_LOCK_IMPL()
120#define AWT_NOFLUSH_UNLOCK() AWT_NOFLUSH_UNLOCK_IMPL()
121#define AWT_WAIT(tm) AWT_WAIT_IMPL(tm)
122#define AWT_NOTIFY() AWT_NOTIFY_IMPL()
123#define AWT_NOTIFY_ALL() AWT_NOTIFY_ALL_IMPL()
124
125#if !defined(HEADLESS) && !defined(MACOSX)
126extern Display *awt_display; /* awt_GraphicsEnv.c */
127extern Boolean awt_ModLockIsShiftLock; /* XToolkit.c */
128#endif /* !HEADLESS && !MACOSX */
129
130#endif /* ! _AWT_ */
131