/*************************************************************************/ /* command_queue_mt.cpp */ /*************************************************************************/ /* This file is part of: */ /* GODOT ENGINE */ /* http://www.godotengine.org */ /*************************************************************************/ /* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */ /* */ /* Permission is hereby granted, free of charge, to any person obtaining */ /* a copy of this software and associated documentation files (the */ /* "Software"), to deal in the Software without restriction, including */ /* without limitation the rights to use, copy, modify, merge, publish, */ /* distribute, sublicense, and/or sell copies of the Software, and to */ /* permit persons to whom the Software is furnished to do so, subject to */ /* the following conditions: */ /* */ /* The above copyright notice and this permission notice shall be */ /* included in all copies or substantial portions of the Software. */ /* */ /* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */ /* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */ /* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/ /* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */ /* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */ /* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */ /* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ /*************************************************************************/ #include "command_queue_mt.h" #include "os/os.h" void CommandQueueMT::lock() { if (mutex) mutex->lock(); } void CommandQueueMT::unlock() { if (mutex) mutex->unlock(); } void CommandQueueMT::wait_for_flush() { // wait one millisecond for a flush to happen OS::get_singleton()->delay_usec(1000); } CommandQueueMT::SyncSemaphore* CommandQueueMT::_alloc_sync_sem() { int idx=-1; while(true) { for(int i=0;i<SYNC_SEMAPHORES;i++) { if (!sync_sems[i].in_use) { sync_sems[i].in_use=true; idx=i; break; } } if (idx==-1) { wait_for_flush(); } else { break; } } return &sync_sems[idx]; } CommandQueueMT::CommandQueueMT(bool p_sync){ read_ptr=0; write_ptr=0; mutex = Mutex::create(); for(int i=0;i<SYNC_SEMAPHORES;i++) { sync_sems[i].sem=Semaphore::create(); sync_sems[i].in_use=false; } if (p_sync) sync = Semaphore::create(); else sync=NULL; } CommandQueueMT::~CommandQueueMT() { if (sync) memdelete(sync); memdelete(mutex); for(int i=0;i<SYNC_SEMAPHORES;i++) { memdelete(sync_sems[i].sem); } }