mirror of https://gitlab.freedesktop.org/mesa/mesa
145 lines
4.1 KiB
C
145 lines
4.1 KiB
C
/**************************************************************************
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*
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* Copyright 2008 VMware, Inc.
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* Copyright 2009-2010 Chia-I Wu <olvaffe@gmail.com>
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* Copyright 2010-2011 LunarG, Inc.
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* All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sub license, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice (including the
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* next paragraph) shall be included in all copies or substantial portions
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* of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*
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**************************************************************************/
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <assert.h>
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#include "c11/threads.h"
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#include "eglglobals.h"
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#include "egldisplay.h"
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#include "egldriver.h"
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static mtx_t _eglGlobalMutex = _MTX_INITIALIZER_NP;
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struct _egl_global _eglGlobal =
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{
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&_eglGlobalMutex, /* Mutex */
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NULL, /* DisplayList */
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2, /* NumAtExitCalls */
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{
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/* default AtExitCalls, called in reverse order */
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_eglUnloadDrivers, /* always called last */
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_eglFiniDisplay
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},
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/* ClientOnlyExtensionString */
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"EGL_EXT_client_extensions"
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" EGL_EXT_platform_base"
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" EGL_KHR_client_get_all_proc_addresses"
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" EGL_KHR_debug",
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/* PlatformExtensionString */
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#ifdef HAVE_WAYLAND_PLATFORM
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" EGL_EXT_platform_wayland"
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#endif
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#ifdef HAVE_X11_PLATFORM
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" EGL_EXT_platform_x11"
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#endif
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#ifdef HAVE_DRM_PLATFORM
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" EGL_MESA_platform_gbm"
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#endif
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#ifdef HAVE_SURFACELESS_PLATFORM
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" EGL_MESA_platform_surfaceless"
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#endif
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"",
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NULL, /* ClientExtensionsString */
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NULL, /* debugCallback */
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_EGL_DEBUG_BIT_CRITICAL | _EGL_DEBUG_BIT_ERROR, /* debugTypesEnabled */
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};
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static void
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_eglAtExit(void)
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{
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EGLint i;
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for (i = _eglGlobal.NumAtExitCalls - 1; i >= 0; i--)
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_eglGlobal.AtExitCalls[i]();
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}
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void
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_eglAddAtExitCall(void (*func)(void))
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{
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if (func) {
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static EGLBoolean registered = EGL_FALSE;
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mtx_lock(_eglGlobal.Mutex);
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if (!registered) {
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atexit(_eglAtExit);
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registered = EGL_TRUE;
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}
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assert(_eglGlobal.NumAtExitCalls < ARRAY_SIZE(_eglGlobal.AtExitCalls));
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_eglGlobal.AtExitCalls[_eglGlobal.NumAtExitCalls++] = func;
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mtx_unlock(_eglGlobal.Mutex);
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}
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}
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const char *
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_eglGetClientExtensionString(void)
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{
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const char *ret;
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mtx_lock(_eglGlobal.Mutex);
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if (_eglGlobal.ClientExtensionString == NULL) {
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size_t clientLen = strlen(_eglGlobal.ClientOnlyExtensionString);
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size_t platformLen = strlen(_eglGlobal.PlatformExtensionString);
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_eglGlobal.ClientExtensionString = (char *) malloc(clientLen + platformLen + 1);
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if (_eglGlobal.ClientExtensionString != NULL) {
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char *ptr = _eglGlobal.ClientExtensionString;
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memcpy(ptr, _eglGlobal.ClientOnlyExtensionString, clientLen);
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ptr += clientLen;
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if (platformLen > 0) {
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// Note that if PlatformExtensionString is not empty, then it will
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// already have a leading space.
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assert(_eglGlobal.PlatformExtensionString[0] == ' ');
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memcpy(ptr, _eglGlobal.PlatformExtensionString, platformLen);
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ptr += platformLen;
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}
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*ptr = '\0';
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}
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}
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ret = _eglGlobal.ClientExtensionString;
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mtx_unlock(_eglGlobal.Mutex);
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return ret;
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}
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