src/egl/main/eglsync.c

   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 #include <string.h>
  30
  31 #include "eglsync.h"
  32 #include "eglcurrent.h"
  33 #include "egllog.h"
  34
  35
  36 /**
  37  * Parse the list of sync attributes and return the proper error code.
  38  */
  39 static EGLint
  40 _eglParseSyncAttribList(_EGLSync *sync, const EGLint *attrib_list)
  41 {
  42    EGLint i, err = EGL_SUCCESS;
  43
  44    if (!attrib_list)
  45       return EGL_SUCCESS;
  46
  47    for (i = 0; attrib_list[i] != EGL_NONE; i++) {
  48       EGLint attr = attrib_list[i++];
  49       EGLint val = attrib_list[i];
  50
  51       switch (attr) {
  52       default:
  53          (void) val;
  54          err = EGL_BAD_ATTRIBUTE;
  55          break;
  56       }
  57
  58       if (err != EGL_SUCCESS) {
  59          _eglLog(_EGL_DEBUG, "bad sync attribute 0x%04x", attr);
  60          break;
  61       }
  62    }
  63
  64    return err;
  65 }
  66
  67
  68 static EGLint
  69 _eglParseSyncAttribList64(_EGLSync *sync, const EGLAttribKHR *attrib_list)
  70 {
  71    EGLint i, err = EGL_SUCCESS;
  72
  73    if (!attrib_list)
  74       return EGL_SUCCESS;
  75
  76    for (i = 0; attrib_list[i] != EGL_NONE; i++) {
  77       EGLint attr = attrib_list[i++];
  78       EGLint val = attrib_list[i];
  79
  80       switch (attr) {
  81       case EGL_CL_EVENT_HANDLE_KHR:
  82          if (sync->Type == EGL_SYNC_CL_EVENT_KHR) {
  83             sync->CLEvent = val;
  84             break;
  85          }
  86          /* fall through */
  87       default:
  88          (void) val;
  89          err = EGL_BAD_ATTRIBUTE;
  90          break;
  91       }
  92
  93       if (err != EGL_SUCCESS) {
  94          _eglLog(_EGL_DEBUG, "bad sync attribute 0x%04x", attr);
  95          break;
  96       }
  97    }
  98
  99    return err;
 100 }
 101
 102
 103 EGLBoolean
 104 _eglInitSync(_EGLSync *sync, _EGLDisplay *dpy, EGLenum type,
 105              const EGLint *attrib_list, const EGLAttribKHR *attrib_list64)
 106 {
 107    EGLint err;
 108
 109    if (!(type == EGL_SYNC_REUSABLE_KHR && dpy->Extensions.KHR_reusable_sync) &&
 110        !(type == EGL_SYNC_FENCE_KHR && dpy->Extensions.KHR_fence_sync) &&
 111        !(type == EGL_SYNC_CL_EVENT_KHR && dpy->Extensions.KHR_cl_event2 &&
 112          attrib_list64))
 113       return _eglError(EGL_BAD_ATTRIBUTE, "eglCreateSyncKHR");
 114
 115    _eglInitResource(&sync->Resource, sizeof(*sync), dpy);
 116    sync->Type = type;
 117    sync->SyncStatus = EGL_UNSIGNALED_KHR;
 118
 119    switch (type) {
 120    case EGL_SYNC_CL_EVENT_KHR:
 121       sync->SyncCondition = EGL_SYNC_CL_EVENT_COMPLETE_KHR;
 122       break;
 123    default:
 124       sync->SyncCondition = EGL_SYNC_PRIOR_COMMANDS_COMPLETE_KHR;
 125    }
 126
 127    if (attrib_list64)
 128       err = _eglParseSyncAttribList64(sync, attrib_list64);
 129    else
 130       err = _eglParseSyncAttribList(sync, attrib_list);
 131
 132    if (err != EGL_SUCCESS)
 133       return _eglError(err, "eglCreateSyncKHR");
 134
 135    if (type == EGL_SYNC_CL_EVENT_KHR && !sync->CLEvent)
 136       return _eglError(EGL_BAD_ATTRIBUTE, "eglCreateSyncKHR");
 137
 138    return EGL_TRUE;
 139 }
 140
 141
 142 EGLBoolean
 143 _eglGetSyncAttribKHR(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSync *sync,
 144                      EGLint attribute, EGLint *value)
 145 {
 146    if (!value)
 147       return _eglError(EGL_BAD_PARAMETER, "eglGetConfigs");
 148
 149    switch (attribute) {
 150    case EGL_SYNC_TYPE_KHR:
 151       *value = sync->Type;
 152       break;
 153    case EGL_SYNC_STATUS_KHR:
 154       *value = sync->SyncStatus;
 155       break;
 156    case EGL_SYNC_CONDITION_KHR:
 157       if (sync->Type != EGL_SYNC_FENCE_KHR &&
 158           sync->Type != EGL_SYNC_CL_EVENT_KHR)
 159          return _eglError(EGL_BAD_ATTRIBUTE, "eglGetSyncAttribKHR");
 160       *value = sync->SyncCondition;
 161       break;
 162    default:
 163       return _eglError(EGL_BAD_ATTRIBUTE, "eglGetSyncAttribKHR");
 164       break;
 165    }
 166
 167    return EGL_TRUE;
 168 }