NAME

PAPI_get_thr_specific -

Retrieve a pointer to a thread specific data structure.

SYNOPSIS

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:

Author

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