Detach PAPI event set from previously specified thread id and restore to executing thread. More...

Detailed Description

C Interface:: #include <papi.h>
int PAPI_detach( int EventSet, unsigned long tid );

PAPI_detach is a wrapper function that calls PAPI_set_opt to allow PAPI to monitor performance counts on a thread other than the one currently executing. This is sometimes referred to as third party monitoring. PAPI_attach connects the specified EventSet to the specifed thread; PAPI_detach breaks that connection and restores the EventSet to the original executing thread.

Parameters:

EventSet	An integer handle for a PAPI EventSet as created by PAPI_create_eventset.
tid	A thread id as obtained from, for example, PAPI_list_threads or PAPI_thread_id.

Return values:

PAPI_ECMP	This feature is unsupported on this component.
PAPI_EINVAL	One or more of the arguments is invalid.
PAPI_ENOEVST	The event set specified does not exist.
PAPI_EISRUN	The event set is currently counting events.

Examples:

    int EventSet = PAPI_NULL;
    unsigned long pid;
    pid = fork( );
    if ( pid <= 0 )
    exit( 1 );
    if ( PAPI_create_eventset( &EventSet ) != PAPI_OK )
    exit( 1 );
    // Add Total Instructions Executed to our EventSet
    if ( PAPI_add_event( EventSet, PAPI_TOT_INS ) != PAPI_OK )
    exit( 1 );
    // Attach this EventSet to the forked process
    if ( PAPI_attach( EventSet, pid ) != PAPI_OK )
    exit( 1 );

Bug:: No known bugs.

See also:: PAPI_set_opt
PAPI_list_threads
PAPI_thread_id
PAPI_thread_init

The documentation for this class was generated from the following file:

papi.c