tss_set

 

C

Language

headers

Type support

Dynamic memory management

Error handling

Program utilities

Variadic function support

Date and time utilities

Strings library

Algorithms

Numerics

Input/output support

Localization support

Thread support (C11)

Atomic operations (C11)

Technical Specifications

 

Thread 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
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 tss_set( tss_t tss_id, void *val );		(since C11)

Sets the value of the thread-specific storage identified by tss_id for the current thread to val. Different threads may set different values to the same key.

The destructor, if available, is not invoked.

Parameters

tss_id	-	thread-specific storage key, obtained from tss_create and not deleted by tss_delete
val	-	value to set thread-specific storage to

Return value

thrd_success if successful, thrd_error otherwise.

Notes

The POSIX equivalent of this function is pthread_setspecific

Typically TSS is used to store pointers to blocks of dynamically allocated memory that have been reserved for use by the calling thread.

tss_set may be called in the TSS destructor. If the destructor exits with non-NULL value in the TSS storage, it will be retried by thrd_exit up to TSS_DTOR_ITERATIONS times, after which the storage will be lost.