kill_dependency

 

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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 <stdatomic.h>
A kill_dependency( A y );		(since C11)

Informs the compiler that the dependency tree started by an memory_order_consume atomic load operation does not extend past the return value of kill_dependency; that is, the argument does not carry a dependency into the return value.

The function is implemented as a macro. A is the type of y.

Parameters

y

-

the expression whose return value is to be removed from a dependency tree

Return value

Returns y, no longer a part of a dependency tree.

References

• C23 standard (ISO/IEC 9899:2024):

• 7.17.3.1 The kill_dependency macro (p: TBD)

• C17 standard (ISO/IEC 9899:2018):

• 7.17.3.1 The kill_dependency macro (p: 203-204)

• C11 standard (ISO/IEC 9899:2011):

• 7.17.3.1 The kill_dependency macro (p: 278)

See also

C++ documentation for kill_dependency