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PAPI_get_thr_specific(3) PAPI PAPI_get_thr_specific(3)


PAPI_get_thr_specific -

Retrieve a pointer to a thread specific data structure.


Detailed Description

@par Prototype:

int PAPI_get_thr_specific( int tag, void **ptr ); @param tag
An identifier, the value of which is either PAPI_USR1_TLS or
PAPI_USR2_TLS. This identifier indicates which of several data
structures associated with this thread is to be accessed. @param ptr
A pointer to the memory containing the data structure. @retval PAPI_OK @retval PAPI_EINVAL
The @em tag argument is out of range. In C, PAPI_get_thr_specific PAPI_get_thr_specific will retrieve the pointer from the array with index @em tag. There are 2 user available locations and @em tag can be either PAPI_USR1_TLS or PAPI_USR2_TLS. The array mentioned above is managed by PAPI and allocated to each thread which has called PAPI_thread_init. There is no Fortran equivalent function. @par Example:

int ret;
RateInfo *state = NULL;
ret = PAPI_thread_init(pthread_self);
if (ret != PAPI_OK) handle_error(ret);

// Do we have the thread specific data setup yet? ret = PAPI_get_thr_specific(PAPI_USR1_TLS, (void *) &state); if (ret != PAPI_OK || state == NULL) {
state = (RateInfo *) malloc(sizeof(RateInfo));
if (state == NULL) return (PAPI_ESYS);
memset(state, 0, sizeof(RateInfo));
state->EventSet = PAPI_NULL;
ret = PAPI_create_eventset(&state->EventSet);
if (ret != PAPI_OK) return (PAPI_ESYS);
ret = PAPI_set_thr_specific(PAPI_USR1_TLS, state);
if (ret != PAPI_OK) return (ret); }

See Also:

PAPI_register_thread PAPI_thread_init PAPI_thread_id PAPI_set_thr_specific


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Mon Nov 14 2022 Version