thrd_join

 

C

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Concurrency support (C11)

Technical Specifications

Symbol index

 

Concurrency support library

Threads thrd_create thrd_equal thrd_current    thrd_sleep thrd_yield thrd_exit thrd_detach thrd_join thrd_successthrd_timedoutthrd_busythrd_nomemthrd_error    Atomic operations atomic_init ATOMIC_VAR_INIT (until C23) ATOMIC_***_LOCK_FREE atomic_is_lock_free atomic_store atomic_load atomic_exchange atomic_compare_exchange atomic_fetch_add atomic_fetch_sub atomic_fetch_or atomic_fetch_xor atomic_fetch_and

Atomic flags atomic_flag ATOMIC_FLAG_INIT atomic_flag_test_and_set atomic_flag_clear Memory ordering memory_order kill_dependency atomic_thread_fence atomic_signal_fence Mutual exclusion mtx_init mtx_lock mtx_timedlock mtx_trylock call_once mtx_unlock mtx_destroy mtx_plainmtx_recursivemtx_timed Condition variables cnd_init cnd_signal cnd_broadcast cnd_wait cnd_timedwait cnd_destroy Thread-local storage thread_local TSS_DTOR_ITERATIONS    tss_create tss_get tss_set tss_delete

 

Defined in header <threads.h>
int thrd_join( thrd_t thr, int *res );		(since C11)

Blocks the current thread until the thread identified by thr finishes execution.

If res is not a null pointer, the result code of the thread is put to the location pointed to by res.

The termination of the thread synchronizes-with the completion of this function.

The behavior is undefined if the thread was previously detached or joined by another thread.

Parameters

thr	-	identifier of the thread to join
res	-	location to put the result code to

Return value

thrd_success if successful, thrd_error otherwise.

References

• C17 standard (ISO/IEC 9899:2018):

• 7.26.5.6 The thrd_join function (p: 280-281)

• C11 standard (ISO/IEC 9899:2011):

• 7.26.5.6 The thrd_join function (p: 384-385)

See also

thrd_detach (C11)	detaches a thread (function)
thrd_exit (C11)	terminates the calling thread (function)
C++ documentation for join