std::unique_lock::try_lock
bool try_lock(); | ? | (since C++11) |
|---|
试图锁定相关的互斥锁而不阻塞。有效呼叫mutex()->try_lock()...
std::system_error如果没有关联的互斥对象，或者互斥对象已被std::unique_lock...
参数
%280%29
返回值
true如果互斥体的所有权已经成功获得，false否则。
例外
- 引发的任何异常
mutex()->try_lock()%28Mutex类型不提交try_lock，但这是一种习俗Lockable%29
- 如果没有关联的互斥，
std::system_error错误代码为std::errc::operation_not_permitted
- 如果互斥锁已被
std::unique_lock，，，std::system_error错误代码为std::errc::resource_deadlock_would_occur
例
另见
lock | locks the associated mutex (public member function) |
|---|---|
try_lock_for | attempts to lock the associated TimedLockable mutex, returns if the mutex has been unavailable for the specified time duration (public member function) |
try_lock_until | tries to lock the associated TimedLockable mutex, returns if the mutex has been unavailable until specified time point has been reached (public member function) |
unlock | unlocks the associated mutex (public member function) |
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