1/************************************************************************** 2 * 3 * Copyright 2010 LunarG, Inc. 4 * All Rights Reserved. 5 * 6 * Permission is hereby granted, free of charge, to any person obtaining a 7 * copy of this software and associated documentation files (the 8 * "Software"), to deal in the Software without restriction, including 9 * without limitation the rights to use, copy, modify, merge, publish, 10 * distribute, sub license, and/or sell copies of the Software, and to 11 * permit persons to whom the Software is furnished to do so, subject to 12 * the following conditions: 13 * 14 * The above copyright notice and this permission notice (including the 15 * next paragraph) shall be included in all copies or substantial portions 16 * of the Software. 17 * 18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 19 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 20 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 21 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 22 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 23 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER 24 * DEALINGS IN THE SOFTWARE. 25 * 26 **************************************************************************/ 27 28 29#ifndef EGLSYNC_INCLUDED 30#define EGLSYNC_INCLUDED 31 32 33#include "egltypedefs.h" 34#include "egldisplay.h" 35 36 37/** 38 * "Base" class for device driver syncs. 39 */ 40struct _egl_sync 41{ 42 /* A sync is a display resource */ 43 _EGLResource Resource; 44 45 EGLenum Type; 46 EGLenum SyncStatus; 47 EGLenum SyncCondition; 48}; 49 50 51PUBLIC EGLBoolean 52_eglInitSync(_EGLSync *sync, _EGLDisplay *dpy, EGLenum type, 53 const EGLint *attrib_list); 54 55 56extern EGLBoolean 57_eglGetSyncAttribKHR(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSync *sync, 58 EGLint attribute, EGLint *value); 59 60 61/** 62 * Increment reference count for the sync. 63 */ 64static INLINE _EGLSync * 65_eglGetSync(_EGLSync *sync) 66{ 67 if (sync) 68 _eglGetResource(&sync->Resource); 69 return sync; 70} 71 72 73/** 74 * Decrement reference count for the sync. 75 */ 76static INLINE EGLBoolean 77_eglPutSync(_EGLSync *sync) 78{ 79 return (sync) ? _eglPutResource(&sync->Resource) : EGL_FALSE; 80} 81 82 83/** 84 * Link a sync to its display and return the handle of the link. 85 * The handle can be passed to client directly. 86 */ 87static INLINE EGLSyncKHR 88_eglLinkSync(_EGLSync *sync) 89{ 90 _eglLinkResource(&sync->Resource, _EGL_RESOURCE_SYNC); 91 return (EGLSyncKHR) sync; 92} 93 94 95/** 96 * Unlink a linked sync from its display. 97 */ 98static INLINE void 99_eglUnlinkSync(_EGLSync *sync) 100{ 101 _eglUnlinkResource(&sync->Resource, _EGL_RESOURCE_SYNC); 102} 103 104 105/** 106 * Lookup a handle to find the linked sync. 107 * Return NULL if the handle has no corresponding linked sync. 108 */ 109static INLINE _EGLSync * 110_eglLookupSync(EGLSyncKHR handle, _EGLDisplay *dpy) 111{ 112 _EGLSync *sync = (_EGLSync *) handle; 113 if (!dpy || !_eglCheckResource((void *) sync, _EGL_RESOURCE_SYNC, dpy)) 114 sync = NULL; 115 return sync; 116} 117 118 119/** 120 * Return the handle of a linked sync, or EGL_NO_SYNC_KHR. 121 */ 122static INLINE EGLSyncKHR 123_eglGetSyncHandle(_EGLSync *sync) 124{ 125 _EGLResource *res = (_EGLResource *) sync; 126 return (res && _eglIsResourceLinked(res)) ? 127 (EGLSyncKHR) sync : EGL_NO_SYNC_KHR; 128} 129 130 131#endif /* EGLSYNC_INCLUDED */ 132