1/**************************************************************************/
2/* command_queue_mt.cpp */
3/**************************************************************************/
4/* This file is part of: */
5/* GODOT ENGINE */
6/* https://godotengine.org */
7/**************************************************************************/
8/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
9/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */
10/* */
11/* Permission is hereby granted, free of charge, to any person obtaining */
12/* a copy of this software and associated documentation files (the */
13/* "Software"), to deal in the Software without restriction, including */
14/* without limitation the rights to use, copy, modify, merge, publish, */
15/* distribute, sublicense, and/or sell copies of the Software, and to */
16/* permit persons to whom the Software is furnished to do so, subject to */
17/* the following conditions: */
18/* */
19/* The above copyright notice and this permission notice shall be */
20/* included in all copies or substantial portions of the Software. */
21/* */
22/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
23/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
24/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
25/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
26/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
27/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
28/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
29/**************************************************************************/
30
31#include "command_queue_mt.h"
32
33#include "core/config/project_settings.h"
34#include "core/os/os.h"
35
36void CommandQueueMT::lock() {
37 mutex.lock();
38}
39
40void CommandQueueMT::unlock() {
41 mutex.unlock();
42}
43
44void CommandQueueMT::wait_for_flush() {
45 // wait one millisecond for a flush to happen
46 OS::get_singleton()->delay_usec(1000);
47}
48
49CommandQueueMT::SyncSemaphore *CommandQueueMT::_alloc_sync_sem() {
50 int idx = -1;
51
52 while (true) {
53 lock();
54 for (int i = 0; i < SYNC_SEMAPHORES; i++) {
55 if (!sync_sems[i].in_use) {
56 sync_sems[i].in_use = true;
57 idx = i;
58 break;
59 }
60 }
61 unlock();
62
63 if (idx == -1) {
64 wait_for_flush();
65 } else {
66 break;
67 }
68 }
69
70 return &sync_sems[idx];
71}
72
73CommandQueueMT::CommandQueueMT(bool p_sync) {
74 if (p_sync) {
75 sync = memnew(Semaphore);
76 }
77}
78
79CommandQueueMT::~CommandQueueMT() {
80 if (sync) {
81 memdelete(sync);
82 }
83}
84