forked from bartvdbraak/blender
73 lines
1.7 KiB
C++
73 lines
1.7 KiB
C++
/*
|
|
* Copyright 2011-2016 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.
|
|
*/
|
|
|
|
#include "util/util_thread.h"
|
|
|
|
#include "util/util_system.h"
|
|
#include "util/util_windows.h"
|
|
|
|
CCL_NAMESPACE_BEGIN
|
|
|
|
thread::thread(function<void()> run_cb, int group)
|
|
: run_cb_(run_cb),
|
|
joined_(false),
|
|
group_(group)
|
|
{
|
|
thread_ = std::thread(&thread::run, this);
|
|
}
|
|
|
|
thread::~thread()
|
|
{
|
|
if(!joined_) {
|
|
join();
|
|
}
|
|
}
|
|
|
|
void *thread::run(void *arg)
|
|
{
|
|
thread *self = (thread*)(arg);
|
|
if(self->group_ != -1) {
|
|
#ifdef _WIN32
|
|
HANDLE thread_handle = GetCurrentThread();
|
|
GROUP_AFFINITY group_affinity = { 0 };
|
|
int num_threads = system_cpu_group_thread_count(self->group_);
|
|
group_affinity.Group = self->group_;
|
|
group_affinity.Mask = (num_threads == 64)
|
|
? -1
|
|
: (1ull << num_threads) - 1;
|
|
if(SetThreadGroupAffinity(thread_handle, &group_affinity, NULL) == 0) {
|
|
fprintf(stderr, "Error setting thread affinity.\n");
|
|
}
|
|
#endif
|
|
}
|
|
self->run_cb_();
|
|
return NULL;
|
|
}
|
|
|
|
bool thread::join()
|
|
{
|
|
joined_ = true;
|
|
try {
|
|
thread_.join();
|
|
return true;
|
|
}
|
|
catch (const std::system_error&) {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
CCL_NAMESPACE_END
|