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      cnd_timedwait

      From cppreference.com
      <c‎ |thread
       
       
      Concurrency support library
       
      Defined in header<threads.h>
      int cnd_timedwait(cnd_t*restrict cond,mtx_t*restrict mutex,
                         conststruct timespec*restrict time_point);
      (since C11)

      Atomically unlocks the mutex pointed to bymutex and blocks on the condition variable pointed to bycond until the thread is signalled bycnd_signal orcnd_broadcast, or until theTIME_UTC based time point pointed to bytime_point has been reached, or until a spurious wake-up occurs. The mutex is locked again before the function returns.

      The behavior is undefined if the mutex is not already locked by the calling thread.

      Contents

      [edit]Parameters

      cond - pointer to the condition variable to block on
      mutex - pointer to the mutex to unlock for the duration of the block
      time_point - pointer to an object specifying timeout time to wait until

      [edit]Return value

      thrd_success if successful,thrd_timedout if the timeout time has been reached before the mutex is locked, orthrd_error if an error occurred.

      [edit]References

      • C17 standard (ISO/IEC 9899:2018):
      • 7.26.3.5 The cnd_timedwait function (p: 276-277)
      • C11 standard (ISO/IEC 9899:2011):
      • 7.26.3.5 The cnd_timedwait function (p: 379-380)

      [edit]See also

      blocks on a condition variable
      (function)[edit]
      C++ documentation forcondition_variable::wait_until
      C++ documentation forcondition_variable_any::wait_until
      Retrieved from "https://en.cppreference.com/mwiki/index.php?title=c/thread/cnd_timedwait&oldid=148786"

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