/*
* File: multiplex1_pthreads.c
* Author: Rick Kufrin
* rkufrin@ncsa.uiuc.edu
* Mods: Philip Mucci
* mucci@cs.utk.edu
*/
/* This file really bangs on the multiplex pthread functionality */
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <pthread.h>
#include "papi.h"
#include "papi_test.h"
#include "do_loops.h"
static int *events;
static int numevents = 0;
static int max_events=0;
double
loop( long n )
{
long i;
double a = 0.0012;
for ( i = 0; i < n; i++ ) {
a += 0.01;
}
return a;
}
void *
thread( void *arg )
{
( void ) arg; /*unused */
int eventset = PAPI_NULL;
long long *values;
int ret = PAPI_register_thread( );
if ( ret != PAPI_OK )
test_fail( __FILE__, __LINE__, "PAPI_register_thread", ret );
ret = PAPI_create_eventset( &eventset );
if ( ret != PAPI_OK )
test_fail( __FILE__, __LINE__, "PAPI_create_eventset", ret );
values=calloc(max_events,sizeof(long long));
if (!TESTS_QUIET) printf( "Event set %d created\n", eventset );
/* In Component PAPI, EventSets must be assigned a component index
before you can fiddle with their internals.
0 is always the cpu component */
ret = PAPI_assign_eventset_component( eventset, 0 );
if ( ret != PAPI_OK ) {
test_fail( __FILE__, __LINE__, "PAPI_assign_eventset_component", ret );
}
ret = PAPI_set_multiplex( eventset );
if ( ret == PAPI_ENOSUPP) {
test_skip( __FILE__, __LINE__, "Multiplexing not supported", 1 );
}
else if ( ret != PAPI_OK ) {
test_fail( __FILE__, __LINE__, "PAPI_set_multiplex", ret );
}
ret = PAPI_add_events( eventset, events, numevents );
if ( ret < PAPI_OK ) {
test_fail( __FILE__, __LINE__, "PAPI_add_events", ret );
}
ret = PAPI_start( eventset );
if ( ret != PAPI_OK ) {
test_fail( __FILE__, __LINE__, "PAPI_start", ret );
}
do_stuff( );
ret = PAPI_stop( eventset, values );
if ( ret != PAPI_OK ) {
test_fail( __FILE__, __LINE__, "PAPI_stop", ret );
}
ret = PAPI_cleanup_eventset( eventset );
if ( ret != PAPI_OK ) {
test_fail( __FILE__, __LINE__, "PAPI_cleanup_eventset", ret );
}
ret = PAPI_destroy_eventset( &eventset );
if ( ret != PAPI_OK ) {
test_fail( __FILE__, __LINE__, "PAPI_destroy_eventset", ret );
}
ret = PAPI_unregister_thread( );
if ( ret != PAPI_OK )
test_fail( __FILE__, __LINE__, "PAPI_unregister_thread", ret );
return ( NULL );
}
int
main( int argc, char **argv )
{
int nthreads = 8, retval, i;
PAPI_event_info_t info;
pthread_t *threads;
int quiet;
/* Set TESTS_QUIET variable */
quiet = tests_quiet( argc, argv );
if ( !quiet ) {
if ( argc > 1 ) {
int tmp = atoi( argv[1] );
if ( tmp >= 1 )
nthreads = tmp;
}
}
retval = PAPI_library_init( PAPI_VER_CURRENT );
if ( retval != PAPI_VER_CURRENT ) {
test_fail( __FILE__, __LINE__, "PAPI_library_init", retval );
}
retval = PAPI_thread_init( ( unsigned long ( * )( void ) ) pthread_self );
if ( retval != PAPI_OK ) {
test_fail( __FILE__, __LINE__, "PAPI_thread_init", retval );
}
retval = PAPI_multiplex_init( );
if ( retval != PAPI_OK ) {
test_fail( __FILE__, __LINE__, "PAPI_multiplex_init", retval );
}
if ((max_events = PAPI_get_cmp_opt(PAPI_MAX_MPX_CTRS,NULL,0)) <= 0) {
test_fail( __FILE__, __LINE__, "PAPI_get_cmp_opt", max_events );
}
if ((events = calloc(max_events,sizeof(int))) == NULL) {
test_fail( __FILE__, __LINE__, "calloc", PAPI_ESYS );
}
/* Fill up the event set with as many non-derived events as we can */
i = PAPI_PRESET_MASK;
do {
if ( PAPI_get_event_info( i, &info ) == PAPI_OK ) {
if ( info.count == 1 ) {
events[numevents++] = ( int ) info.event_code;
if (!quiet) printf( "Added %s\n", info.symbol );
} else {
if (!quiet) printf( "Skipping derived event %s\n", info.symbol );
}
}
} while ( ( PAPI_enum_event( &i, PAPI_PRESET_ENUM_AVAIL ) == PAPI_OK )
&& ( numevents < max_events ) );
if (!quiet) printf( "Found %d events\n", numevents );
if (numevents==0) {
test_skip(__FILE__,__LINE__,"No events found",0);
}
do_stuff( );
if (!quiet) printf( "Creating %d threads:\n", nthreads );
threads =
( pthread_t * ) malloc( ( size_t ) nthreads * sizeof ( pthread_t ) );
if ( threads == NULL ) {
test_fail( __FILE__, __LINE__, "malloc", PAPI_ENOMEM );
}
/* Create the threads */
for ( i = 0; i < nthreads; i++ ) {
retval = pthread_create( &threads[i], NULL, thread, NULL );
if ( retval != 0 ) {
test_fail( __FILE__, __LINE__, "pthread_create", PAPI_ESYS );
}
}
/* Wait for thread completion */
for ( i = 0; i < nthreads; i++ ) {
retval = pthread_join( threads[i], NULL );
if ( retval != 0 ) {
test_fail( __FILE__, __LINE__, "pthread_join", PAPI_ESYS );
}
}
if (!quiet) printf( "Done." );
test_pass( __FILE__ );
pthread_exit( NULL );
return 0;
}