mirror of
https://github.com/godotengine/godot.git
synced 2024-11-27 09:16:35 +08:00
108 lines
3.1 KiB
C++
108 lines
3.1 KiB
C++
/*************************************************************************/
|
|
/* 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);
|
|
}
|
|
}
|
|
|
|
|