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Showing content from https://cplusplus.com/reference/mutex/recursive_timed_mutex/try_lock_for/ below:

public member function

<mutex>

std::recursive_timed_mutex::try_lock_for

template <class Rep, class Period>  bool try_lock_for (const chrono::duration<Rep,Period>& rel_time);

Try to lock for time span

Attempts to lock the recursive_timed_mutex, blocking for rel_time at most:

If the recursive_timed_mutex isn't currently locked by any thread, the calling thread locks it (from this point, and until its member unlock is called, the thread owns the recursive_timed_mutex).
If the recursive_timed_mutex is currently locked by another thread, execution of the calling thread is blocked until unlocked or once rel_time has elapsed, whichever happens first (meanwhile, other non-locked threads continue their execution).
If the recursive_timed_mutex is currently locked by the same thread calling this function, the thread acquires a new level of ownership over the recursive_timed_mutex. Unlocking the recursive_timed_mutex completely will require an additional call to member unlock.

All lock and unlock operations on the recursive_timed_mutex follow a single total order, with all visible effects synchronized between the lock operations and previous unlock operations on the same object.

Parameters

rel_time

The maximum time span during which the thread will block, waiting to acquire a lock.
duration is an object that represents a specific relative time.

Return valuetrue if the function succeeds in locking the recursive_timed_mutex for the thread.
false otherwise.

Data races The recursive_timed_mutex object is accessed/modified as an atomic operation (causes no data races).

Exception safety Offers the same level of guarantee as the operations on the duration object (for the type instantiations in <chrono>, this is a no-throw guarantee).

See also

recursive_timed_mutex::lock: Lock recursive timed mutex (public member function)

recursive_timed_mutex::try_lock: Lock recursive timed mutex if not locked (public member function)

recursive_timed_mutex::try_lock_until: Try to lock until time point (public member function)

recursive_timed_mutex::unlock: Unlock timed mutex (public member function)

sleep_for: Sleep for time span (function)

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