1 /*
2 * Copyright (C) 2011 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16 #ifndef _THREAD_INFO_H
17 #define _THREAD_INFO_H
18 
19 #include "HostConnection.h"
20 #include <pthread.h>
21 #ifdef HAVE_ANDROID_OS
22 #include <bionic_tls.h>
23 #endif
24 
25 struct EGLContext_t;
26 
27 struct EGLThreadInfo
28 {
EGLThreadInfoEGLThreadInfo29     EGLThreadInfo() : currentContext(NULL), hostConn(NULL), eglError(EGL_SUCCESS) {}
30 
31     EGLContext_t *currentContext;
32     HostConnection *hostConn;
33     int           eglError;
34 };
35 
36 
37 EGLThreadInfo *slow_getEGLThreadInfo();
38 
39 #ifdef HAVE_ANDROID_OS
40     // We have a dedicated TLS slot in bionic
getEGLThreadInfo()41     inline EGLThreadInfo* getEGLThreadInfo() {
42         EGLThreadInfo *tInfo =
43              (EGLThreadInfo *)(((uintptr_t *)__get_tls())[TLS_SLOT_OPENGL]);
44         if (!tInfo) {
45             tInfo = slow_getEGLThreadInfo();
46             ((uintptr_t *)__get_tls())[TLS_SLOT_OPENGL] = (uintptr_t)tInfo;
47         }
48         return tInfo;
49     }
50 #else
getEGLThreadInfo()51     inline EGLThreadInfo* getEGLThreadInfo() {
52         return slow_getEGLThreadInfo();
53     }
54 #endif
55 
56 
57 
58 
59 #endif // of _THREAD_INFO_H
60