try_lock Member Function

Attempt to acquire a lock on a std::mutex object for the current thread.

bool try_lock();

Effects:: Attempts to acquire a lock on *this for the calling thread without blocking.
Returns:: true if a lock was obtained for the calling thread, false otherwise.
Postconditions:: *this is locked by the calling thread if the function returns true.
Throws:: Nothing.
Note:: If the calling thread already holds the lock on *this, the function returns false. The function may fail to acquire the lock (and return false) even if no other thread holds a lock on *this.

#include <mutex>

just::thread Complete C++ Standard Thread Library by Just Software Solutions