forked from bartvdbraak/blender
746aec51a7
First benefit is reduced boilerplate code. Second benefit is fixed warnings about using deprecated spin lock on macOS when using SDK 10.12 and above. Differential Revision: https://developer.blender.org/D8182
91 lines
2.1 KiB
C++
91 lines
2.1 KiB
C++
/*
|
|
* Copyright 2011-2013 Blender Foundation
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
|
|
#ifndef __UTIL_THREAD_H__
|
|
#define __UTIL_THREAD_H__
|
|
|
|
#include <condition_variable>
|
|
#include <functional>
|
|
#include <mutex>
|
|
#include <queue>
|
|
#include <thread>
|
|
|
|
#ifdef _WIN32
|
|
# include "util_windows.h"
|
|
#else
|
|
# include <pthread.h>
|
|
#endif
|
|
|
|
/* NOTE: Use tbb/spin_mutex.h instead of util_tbb.h because some of the TBB
|
|
* functionality requires RTTI, which is disabled for OSL kernel. */
|
|
#include <tbb/spin_mutex.h>
|
|
|
|
#include "util/util_function.h"
|
|
|
|
CCL_NAMESPACE_BEGIN
|
|
|
|
typedef std::mutex thread_mutex;
|
|
typedef std::unique_lock<std::mutex> thread_scoped_lock;
|
|
typedef std::condition_variable thread_condition_variable;
|
|
|
|
/* Own thread implementation similar to std::thread, so we can set a
|
|
* custom stack size on macOS. */
|
|
|
|
class thread {
|
|
public:
|
|
/* NOTE: Node index of -1 means that affinity will be inherited from the
|
|
* parent thread and no override on top of that will happen. */
|
|
thread(function<void()> run_cb, int node = -1);
|
|
~thread();
|
|
|
|
static void *run(void *arg);
|
|
bool join();
|
|
|
|
protected:
|
|
function<void()> run_cb_;
|
|
#ifdef __APPLE__
|
|
pthread_t pthread_id;
|
|
#else
|
|
std::thread std_thread;
|
|
#endif
|
|
bool joined_;
|
|
int node_;
|
|
};
|
|
|
|
using thread_spin_lock = tbb::spin_mutex;
|
|
|
|
class thread_scoped_spin_lock {
|
|
public:
|
|
explicit thread_scoped_spin_lock(thread_spin_lock &lock) : lock_(lock)
|
|
{
|
|
lock_.lock();
|
|
}
|
|
|
|
~thread_scoped_spin_lock()
|
|
{
|
|
lock_.unlock();
|
|
}
|
|
|
|
/* TODO(sergey): Implement manual control over lock/unlock. */
|
|
|
|
protected:
|
|
thread_spin_lock &lock_;
|
|
};
|
|
|
|
CCL_NAMESPACE_END
|
|
|
|
#endif /* __UTIL_THREAD_H__ */
|