1d68a2e45260f864503d7bd6da93fd29589afd89ePatrick Tjin/* 2d68a2e45260f864503d7bd6da93fd29589afd89ePatrick Tjin* Copyright (c) 2015, The Linux Foundation. All rights reserved. 3d68a2e45260f864503d7bd6da93fd29589afd89ePatrick Tjin* 4d68a2e45260f864503d7bd6da93fd29589afd89ePatrick Tjin* Redistribution and use in source and binary forms, with or without 5d68a2e45260f864503d7bd6da93fd29589afd89ePatrick Tjin* modification, are permitted provided that the following conditions are 6d68a2e45260f864503d7bd6da93fd29589afd89ePatrick Tjin* met: 7d68a2e45260f864503d7bd6da93fd29589afd89ePatrick Tjin* * Redistributions of source code must retain the above copyright 8d68a2e45260f864503d7bd6da93fd29589afd89ePatrick Tjin* notice, this list of conditions and the following disclaimer. 9d68a2e45260f864503d7bd6da93fd29589afd89ePatrick Tjin* * Redistributions in binary form must reproduce the above 10d68a2e45260f864503d7bd6da93fd29589afd89ePatrick Tjin* copyright notice, this list of conditions and the following 11d68a2e45260f864503d7bd6da93fd29589afd89ePatrick Tjin* disclaimer in the documentation and/or other materials provided 12d68a2e45260f864503d7bd6da93fd29589afd89ePatrick Tjin* with the distribution. 13d68a2e45260f864503d7bd6da93fd29589afd89ePatrick Tjin* * Neither the name of The Linux Foundation nor the names of its 14d68a2e45260f864503d7bd6da93fd29589afd89ePatrick Tjin* contributors may be used to endorse or promote products derived 15d68a2e45260f864503d7bd6da93fd29589afd89ePatrick Tjin* from this software without specific prior written permission. 16d68a2e45260f864503d7bd6da93fd29589afd89ePatrick Tjin* 17d68a2e45260f864503d7bd6da93fd29589afd89ePatrick Tjin* THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED 18d68a2e45260f864503d7bd6da93fd29589afd89ePatrick Tjin* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 19d68a2e45260f864503d7bd6da93fd29589afd89ePatrick Tjin* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT 20d68a2e45260f864503d7bd6da93fd29589afd89ePatrick Tjin* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS 21d68a2e45260f864503d7bd6da93fd29589afd89ePatrick Tjin* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 22d68a2e45260f864503d7bd6da93fd29589afd89ePatrick Tjin* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 23d68a2e45260f864503d7bd6da93fd29589afd89ePatrick Tjin* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR 24d68a2e45260f864503d7bd6da93fd29589afd89ePatrick Tjin* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 25d68a2e45260f864503d7bd6da93fd29589afd89ePatrick Tjin* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE 26d68a2e45260f864503d7bd6da93fd29589afd89ePatrick Tjin* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN 27d68a2e45260f864503d7bd6da93fd29589afd89ePatrick Tjin* IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28d68a2e45260f864503d7bd6da93fd29589afd89ePatrick Tjin*/ 29d68a2e45260f864503d7bd6da93fd29589afd89ePatrick Tjin 30d68a2e45260f864503d7bd6da93fd29589afd89ePatrick Tjin#include <sync/sync.h> 31d68a2e45260f864503d7bd6da93fd29589afd89ePatrick Tjin#include <utils/constants.h> 32d68a2e45260f864503d7bd6da93fd29589afd89ePatrick Tjin#include <utils/debug.h> 33d68a2e45260f864503d7bd6da93fd29589afd89ePatrick Tjin 34d68a2e45260f864503d7bd6da93fd29589afd89ePatrick Tjin#include "hwc_debugger.h" 35d68a2e45260f864503d7bd6da93fd29589afd89ePatrick Tjin#include "hwc_buffer_sync_handler.h" 36d68a2e45260f864503d7bd6da93fd29589afd89ePatrick Tjin 37d68a2e45260f864503d7bd6da93fd29589afd89ePatrick Tjin#define __CLASS__ "HWCBufferSyncHandler" 38d68a2e45260f864503d7bd6da93fd29589afd89ePatrick Tjin 39d68a2e45260f864503d7bd6da93fd29589afd89ePatrick Tjinnamespace sdm { 40d68a2e45260f864503d7bd6da93fd29589afd89ePatrick Tjin 41d68a2e45260f864503d7bd6da93fd29589afd89ePatrick TjinDisplayError HWCBufferSyncHandler::SyncWait(int fd) { 42d68a2e45260f864503d7bd6da93fd29589afd89ePatrick Tjin int error = 0; 43d68a2e45260f864503d7bd6da93fd29589afd89ePatrick Tjin 44d68a2e45260f864503d7bd6da93fd29589afd89ePatrick Tjin if (fd >= 0) { 45d68a2e45260f864503d7bd6da93fd29589afd89ePatrick Tjin error = sync_wait(fd, 1000); 46d68a2e45260f864503d7bd6da93fd29589afd89ePatrick Tjin if (error < 0) { 47d68a2e45260f864503d7bd6da93fd29589afd89ePatrick Tjin DLOGE("sync_wait error errno = %d, desc = %s", errno, strerror(errno)); 48d68a2e45260f864503d7bd6da93fd29589afd89ePatrick Tjin return kErrorTimeOut; 49d68a2e45260f864503d7bd6da93fd29589afd89ePatrick Tjin } 50d68a2e45260f864503d7bd6da93fd29589afd89ePatrick Tjin } 51d68a2e45260f864503d7bd6da93fd29589afd89ePatrick Tjin 52d68a2e45260f864503d7bd6da93fd29589afd89ePatrick Tjin return kErrorNone; 53d68a2e45260f864503d7bd6da93fd29589afd89ePatrick Tjin} 54d68a2e45260f864503d7bd6da93fd29589afd89ePatrick Tjin 55d68a2e45260f864503d7bd6da93fd29589afd89ePatrick TjinDisplayError HWCBufferSyncHandler::SyncMerge(int fd1, int fd2, int *merged_fd) { 56d68a2e45260f864503d7bd6da93fd29589afd89ePatrick Tjin DisplayError error = kErrorNone; 57d68a2e45260f864503d7bd6da93fd29589afd89ePatrick Tjin 58d68a2e45260f864503d7bd6da93fd29589afd89ePatrick Tjin // Merge the two fences. In the case where one of the fences is not a 59d68a2e45260f864503d7bd6da93fd29589afd89ePatrick Tjin // valid fence (e.g. NO_FENCE) merge the one valid fence with itself so 60d68a2e45260f864503d7bd6da93fd29589afd89ePatrick Tjin // that a new fence with the given name is created. 61d68a2e45260f864503d7bd6da93fd29589afd89ePatrick Tjin // TODO(user): "SyncMerge"string should be replaced with user-defined string to represent 62d68a2e45260f864503d7bd6da93fd29589afd89ePatrick Tjin // why it is merged. 63d68a2e45260f864503d7bd6da93fd29589afd89ePatrick Tjin if (fd1 >= 0 && fd2 >= 0) { 64d68a2e45260f864503d7bd6da93fd29589afd89ePatrick Tjin *merged_fd = sync_merge("SyncMerge", fd1, fd2); 65d68a2e45260f864503d7bd6da93fd29589afd89ePatrick Tjin } else if (fd1 >= 0) { 66d68a2e45260f864503d7bd6da93fd29589afd89ePatrick Tjin *merged_fd = sync_merge("SyncMerge", fd1, fd1); 67d68a2e45260f864503d7bd6da93fd29589afd89ePatrick Tjin } else if (fd2 >= 0) { 68d68a2e45260f864503d7bd6da93fd29589afd89ePatrick Tjin *merged_fd = sync_merge("SyncMerge", fd2, fd2); 69d68a2e45260f864503d7bd6da93fd29589afd89ePatrick Tjin } else { 70d68a2e45260f864503d7bd6da93fd29589afd89ePatrick Tjin DLOGE("Invalid arguments passed"); 71d68a2e45260f864503d7bd6da93fd29589afd89ePatrick Tjin return kErrorParameters; 72d68a2e45260f864503d7bd6da93fd29589afd89ePatrick Tjin } 73d68a2e45260f864503d7bd6da93fd29589afd89ePatrick Tjin 74d68a2e45260f864503d7bd6da93fd29589afd89ePatrick Tjin if (*merged_fd == -1) { 75d68a2e45260f864503d7bd6da93fd29589afd89ePatrick Tjin DLOGE("Sync merge error! fd1 %d fd2 %d", fd1, fd2); 76d68a2e45260f864503d7bd6da93fd29589afd89ePatrick Tjin error = kErrorFileDescriptor; 77d68a2e45260f864503d7bd6da93fd29589afd89ePatrick Tjin } 78d68a2e45260f864503d7bd6da93fd29589afd89ePatrick Tjin 79d68a2e45260f864503d7bd6da93fd29589afd89ePatrick Tjin return error; 80d68a2e45260f864503d7bd6da93fd29589afd89ePatrick Tjin} 81d68a2e45260f864503d7bd6da93fd29589afd89ePatrick Tjin 82d68a2e45260f864503d7bd6da93fd29589afd89ePatrick Tjinbool HWCBufferSyncHandler::IsSyncSignaled(int fd) { 83d68a2e45260f864503d7bd6da93fd29589afd89ePatrick Tjin if (sync_wait(fd, 0) < 0) { 84d68a2e45260f864503d7bd6da93fd29589afd89ePatrick Tjin return false; 85d68a2e45260f864503d7bd6da93fd29589afd89ePatrick Tjin } else { 86d68a2e45260f864503d7bd6da93fd29589afd89ePatrick Tjin return true; 87d68a2e45260f864503d7bd6da93fd29589afd89ePatrick Tjin } 88d68a2e45260f864503d7bd6da93fd29589afd89ePatrick Tjin} 89d68a2e45260f864503d7bd6da93fd29589afd89ePatrick Tjin 90d68a2e45260f864503d7bd6da93fd29589afd89ePatrick Tjin} // namespace sdm 91d68a2e45260f864503d7bd6da93fd29589afd89ePatrick Tjin 92