/**
 * @author  Vince Weaver
 *
 * test case for lustre component
 *
 *
 * @brief
 *   Tests basic lustre functionality
 */

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#include "papi.h"
#include "papi_test.h"

#define NUM_EVENTS 1

int main (int argc, char **argv)
{

        int retval,cid,numcmp;
	int EventSet = PAPI_NULL;
	long long values[NUM_EVENTS];
	int code;
	char event_name[PAPI_MAX_STR_LEN];
	int total_events=0;
	int r;
	const PAPI_component_info_t *cmpinfo = NULL;
	int quiet=0;

        /* Set TESTS_QUIET variable */
        quiet=tests_quiet( argc, argv );

	/* PAPI Initialization */
	retval = PAPI_library_init( PAPI_VER_CURRENT );
	if ( retval != PAPI_VER_CURRENT ) {
	   test_fail(__FILE__, __LINE__,"PAPI_library_init failed\n",retval);
	}

	if (!quiet) {
	   printf("Trying all lustre events\n");
	}

        numcmp = PAPI_num_components();

	for(cid=0; cid<numcmp; cid++) {

	   if ( (cmpinfo = PAPI_get_component_info(cid)) == NULL) {
	      test_fail(__FILE__, __LINE__,"PAPI_get_component_info failed\n", 0);
	   }

	   if (strstr(cmpinfo->name,"lustre")) {
	     if (!quiet) printf("\tFound lustre component %d - %s\n", cid, cmpinfo->name);
	   }
	   else {
	     continue;
	   }

	   code = PAPI_NATIVE_MASK;

           r = PAPI_enum_cmp_event( &code, PAPI_ENUM_FIRST, cid );

	   while ( r == PAPI_OK ) {
	      retval = PAPI_event_code_to_name( code, event_name );
	      if ( retval != PAPI_OK ) {
		 printf("Error translating %#x\n",code);
	         test_fail( __FILE__, __LINE__,
                            "PAPI_event_code_to_name", retval );
	      }

	      if (!quiet) printf("  %s ",event_name);

	      EventSet = PAPI_NULL;

	      retval = PAPI_create_eventset( &EventSet );
	      if (retval != PAPI_OK) {
	         test_fail(__FILE__, __LINE__,
                              "PAPI_create_eventset()",retval);
	      }

	      retval = PAPI_add_event( EventSet, code );
	      if (retval != PAPI_OK) {
	            test_fail(__FILE__, __LINE__,
                                 "PAPI_add_event()",retval);
	      }

	      retval = PAPI_start( EventSet);
	      if (retval != PAPI_OK) {
	            test_fail(__FILE__, __LINE__, "PAPI_start()",retval);
	      }

	      retval = PAPI_stop( EventSet, values);
	      if (retval != PAPI_OK) {
	            test_fail(__FILE__, __LINE__, "PAPI_start()",retval);
	      }

	      if (!quiet) printf(" value: %lld\n",values[0]);

	      retval = PAPI_cleanup_eventset( EventSet );
	      if (retval != PAPI_OK) {
	            test_fail(__FILE__, __LINE__,
                              "PAPI_cleanup_eventset()",retval);
	      }

	      retval = PAPI_destroy_eventset( &EventSet );
	      if (retval != PAPI_OK) {
	            test_fail(__FILE__, __LINE__,
                              "PAPI_destroy_eventset()",retval);
	      }

	      total_events++;

	      r = PAPI_enum_cmp_event( &code, PAPI_ENUM_EVENTS, cid );
	   }
        }

	if (total_events==0) {
	   test_skip(__FILE__,__LINE__,"No lustre events found",0);
	}

	if (!quiet) {
	  printf("Note: for this test the values are expected to all be 0 as no I/O happens during the test.\n");
	}

	test_pass( __FILE__ );

	return 0;
}