1 /*
2  * Copyright (c) 1998, 2019, 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 #ifndef _AWT_GRAPHICSENV_H_
27 #define _AWT_GRAPHICSENV_H_
28 
29 #include <jni_util.h>
30 
31 #ifndef HEADLESS
32 #define MITSHM
33 #endif /* !HEADLESS */
34 
35 #define UNSET_MITSHM (-2)
36 #define NOEXT_MITSHM (-1)
37 #define CANT_USE_MITSHM (0)
38 #define CAN_USE_MITSHM (1)
39 
40 #ifdef MITSHM
41 
42 #include <sys/ipc.h>
43 #include <sys/shm.h>
44 #include <X11/extensions/XShm.h>
45 #ifndef X_ShmAttach
46 #include <X11/Xmd.h>
47 #include <X11/extensions/shmproto.h>
48 #endif
49 
50 #define MITSHM_PERM_COMMON (0666)
51 #define MITSHM_PERM_OWNER  (0600)
52 
53 extern int XShmQueryExtension();
54 
55 void TryInitMITShm(JNIEnv *env, jint *shmExt, jint *shmPixmaps);
56 void resetXShmAttachFailed();
57 jboolean isXShmAttachFailed();
58 
59 #endif /* MITSHM */
60 
61 /* fieldIDs for X11GraphicsConfig fields that may be accessed from C */
62 struct X11GraphicsConfigIDs {
63     jfieldID aData;
64     jfieldID bitsPerPixel;
65 };
66 
67 #endif /* _AWT_GRAPHICSENV_H_ */
68