mirror of
https://github.com/danog/ton.git
synced 2024-12-04 10:28:27 +01:00
65 lines
1.9 KiB
C++
65 lines
1.9 KiB
C++
|
/*
|
||
|
|
This file is part of TON Blockchain Library.
|
||
|
|
|
||
|
|
TON Blockchain Library is free software: you can redistribute it and/or modify
|
||
|
|
it under the terms of the GNU Lesser General Public License as published by
|
||
|
|
the Free Software Foundation, either version 2 of the License, or
|
||
|
|
(at your option) any later version.
|
||
|
|
|
||
|
|
TON Blockchain Library is distributed in the hope that it will be useful,
|
||
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
|
|
GNU Lesser General Public License for more details.
|
||
|
|
|
||
|
|
You should have received a copy of the GNU Lesser General Public License
|
||
|
|
along with TON Blockchain Library. If not, see <http://www.gnu.org/licenses/>.
|
||
|
|
|
||
|
|
Copyright 2017-2019 Telegram Systems LLP
|
||
|
|
*/
|
||
|
|
#include "td/utils/port/detail/ThreadIdGuard.h"
|
||
|
|
|
||
|
|
#include "td/utils/common.h"
|
||
|
|
#include "td/utils/port/thread_local.h"
|
||
|
|
|
||
|
|
#include <mutex>
|
||
|
|
#include <set>
|
||
|
|
|
||
|
|
namespace td {
|
||
|
|
namespace detail {
|
||
|
|
class ThreadIdManager {
|
||
|
|
public:
|
||
|
|
int32 register_thread() {
|
||
|
|
std::lock_guard<std::mutex> guard(mutex_);
|
||
|
|
if (unused_thread_ids_.empty()) {
|
||
|
|
return ++max_thread_id_;
|
||
|
|
}
|
||
|
|
auto it = unused_thread_ids_.begin();
|
||
|
|
auto result = *it;
|
||
|
|
unused_thread_ids_.erase(it);
|
||
|
|
return result;
|
||
|
|
}
|
||
|
|
void unregister_thread(int32 thread_id) {
|
||
|
|
std::lock_guard<std::mutex> guard(mutex_);
|
||
|
|
CHECK(0 < thread_id && thread_id <= max_thread_id_);
|
||
|
|
bool is_inserted = unused_thread_ids_.insert(thread_id).second;
|
||
|
|
CHECK(is_inserted);
|
||
|
|
}
|
||
|
|
|
||
|
|
private:
|
||
|
|
std::mutex mutex_;
|
||
|
|
std::set<int32> unused_thread_ids_;
|
||
|
|
int32 max_thread_id_ = 0;
|
||
|
|
};
|
||
|
|
static ThreadIdManager thread_id_manager;
|
||
|
|
|
||
|
|
ThreadIdGuard::ThreadIdGuard() {
|
||
|
|
thread_id_ = thread_id_manager.register_thread();
|
||
|
|
set_thread_id(thread_id_);
|
||
|
|
}
|
||
|
|
ThreadIdGuard::~ThreadIdGuard() {
|
||
|
|
thread_id_manager.unregister_thread(thread_id_);
|
||
|
|
set_thread_id(0);
|
||
|
|
}
|
||
|
|
} // namespace detail
|
||
|
|
} // namespace td
|