std::recursive_mutex Defined in header<mutex> classrecursive_mutex; (since C++11) Therecursive_mutexclass is a synchronization primitive that can be used to protect shared data from being simultaneously accessed
lock(); ++g_num; // 注意,此互斥体也同步输出 std::cout << "id: " << id << ", g_num: " << g_num << '\n'; g_num_mutex.unlock(); std::this_thread::sleep_for(std::chrono::milliseconds(234)); } } int main() { std::thread t1(slow_increment, 0); std::thread t2(...
std::recursive_timed_mutex::unlock C++ Concurrency support library std::recursive_timed_mutex voidunlock(); (since C++11) Unlocks the mutex if its level of ownership is1(there was exactly one more call tolock()than there were calls tounlock()made by this thread), reduces the level of own...
main.cpp #include <iostream> #include <chrono> #include <thread> #include <mutex> std::recursive_mutex mtx; void bar() { std::cout << "bar begin \n"; std::cout << "bar mtx.lock()\n"; mtx.lock(); std::cout << "bar mtx.unlock()\n"; mtx.unlock(); std::cout << "bar...
recursive_timed_mutex::try_lock_for recursive_timed_mutex::try_lock_until recursive_timed_mutex::unlock Native handle recursive_timed_mutex::native_handlenative_handle_type native_handle(); (since C++11) (not always present) Returns the underlying implementation-defined native handle object. Paramete...
unlocks the mutex (public member function) c MTX文件[医]时间锁 代码语言:txt 复制 © cppreference.com 在CreativeCommonsAttribution下授权-ShareAlike未移植许可v3.0。 http://en.cpPreference.com/w/cpp/线程/递归[医]定时[医]互斥/尝试[医]锁[医]直到 ...
std::recursive_mutex 与 std::recursive_timed_mutex std::mutex 及其变种不允许同一个线程对互斥量多次上锁,而 std::recursive_mutex 则允许。相应的 lock 次数也必须和 unlock 次数相等,否则仍然死锁。 例子: classBrainBox{public:std::recursive_mutexrec_mutex;public:voidPrintHelloByte(){this->rec_mutex....
C++ 标准库当中提供了互斥量 mutex 系列,且在实际开发当中经常与 std::lock_guard 和 std::unique_lock 配合使用。 但是,要想学会使用 std::lock_guard 和 std::unique_lock ,必须先了解基本的 std::mutex。 头文件: #include <mutex> 在头文件当中提供了四种互斥量: ...
tries to lock the mutex, returns if the mutex has beenunavailable until specified time point has been reached (public member function) unlock unlocks the mutex (public member function) c MTX文件[医]幽会 代码语言:txt 复制 © cppreference.com ...
(1)有时候会在两个函数中分别对数据进行lock,如果在一个函数中又调用了另一个函数,此时如果使用std::mutex将会死锁,而用std::recursive_mutex则不会。 (2)lock和unlock的数量必须相等:看起来std::recursive_mutex很不错,但是使用的时候也需要多注意,否则会出错。