1 /**************************************************************************
2 *
3 * Copyright 2008 VMware, Inc.
4 * Copyright 2009-2010 Chia-I Wu <olvaffe@gmail.com>
5 * Copyright 2010-2011 LunarG, Inc.
6 * All Rights Reserved.
7 *
8 * Permission is hereby granted, free of charge, to any person obtaining a
9 * copy of this software and associated documentation files (the
10 * "Software"), to deal in the Software without restriction, including
11 * without limitation the rights to use, copy, modify, merge, publish,
12 * distribute, sub license, and/or sell copies of the Software, and to
13 * permit persons to whom the Software is furnished to do so, subject to
14 * the following conditions:
15 *
16 * The above copyright notice and this permission notice (including the
17 * next paragraph) shall be included in all copies or substantial portions
18 * of the Software.
19 *
20 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
21 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
22 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
23 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
24 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
25 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
26 * DEALINGS IN THE SOFTWARE.
27 *
28 **************************************************************************/
29
30
31 #include <stdlib.h>
32 #include <assert.h>
33 #include "c11/threads.h"
34
35 #include "eglglobals.h"
36 #include "egldisplay.h"
37 #include "egldriver.h"
38
39
40 static mtx_t _eglGlobalMutex = _MTX_INITIALIZER_NP;
41
42 struct _egl_global _eglGlobal =
43 {
44 &_eglGlobalMutex, /* Mutex */
45 NULL, /* DisplayList */
46 2, /* NumAtExitCalls */
47 {
48 /* default AtExitCalls, called in reverse order */
49 _eglUnloadDrivers, /* always called last */
50 _eglFiniDisplay
51 },
52
53 /* ClientExtensionString */
54 "EGL_EXT_client_extensions"
55 " EGL_EXT_platform_base"
56 #ifdef HAVE_WAYLAND_PLATFORM
57 " EGL_EXT_platform_wayland"
58 #endif
59 #ifdef HAVE_X11_PLATFORM
60 " EGL_EXT_platform_x11"
61 #endif
62 #ifdef HAVE_DRM_PLATFORM
63 " EGL_MESA_platform_gbm"
64 #endif
65 #ifdef HAVE_SURFACELESS_PLATFORM
66 " EGL_MESA_platform_surfaceless"
67 #endif
68 " EGL_KHR_client_get_all_proc_addresses"
69 " EGL_KHR_debug",
70
71 NULL, /* debugCallback */
72 _EGL_DEBUG_BIT_CRITICAL | _EGL_DEBUG_BIT_ERROR, /* debugTypesEnabled */
73 };
74
75
76 static void
_eglAtExit(void)77 _eglAtExit(void)
78 {
79 EGLint i;
80 for (i = _eglGlobal.NumAtExitCalls - 1; i >= 0; i--)
81 _eglGlobal.AtExitCalls[i]();
82 }
83
84
85 void
_eglAddAtExitCall(void (* func)(void))86 _eglAddAtExitCall(void (*func)(void))
87 {
88 if (func) {
89 static EGLBoolean registered = EGL_FALSE;
90
91 mtx_lock(_eglGlobal.Mutex);
92
93 if (!registered) {
94 atexit(_eglAtExit);
95 registered = EGL_TRUE;
96 }
97
98 assert(_eglGlobal.NumAtExitCalls < ARRAY_SIZE(_eglGlobal.AtExitCalls));
99 _eglGlobal.AtExitCalls[_eglGlobal.NumAtExitCalls++] = func;
100
101 mtx_unlock(_eglGlobal.Mutex);
102 }
103 }
104