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/* This file performs the following test: start, stop and timer functionality for
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an attached process as well as itself.
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- It attempts to use the following two counters. It may use less depending on
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hardware counter resource limitations. These are counted in the default counting
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domain and default granularity, depending on the platform. Usually this is
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the user domain (PAPI_DOM_USER) and thread context (PAPI_GRN_THR).
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+ PAPI_FP_INS
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+ PAPI_TOT_CYC
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- Get us.
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- Start counters
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- Do flops
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- Stop and read counters
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- Get us.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <inttypes.h>
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#include <sys/ptrace.h>
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#include <sys/wait.h>
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#include "papi.h"
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#include "papi_test.h"
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#include "do_loops.h"
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#ifdef _AIX
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#define _LINUX_SOURCE_COMPAT
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#endif
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#if defined(__FreeBSD__)
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# define PTRACE_ATTACH PT_ATTACH
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# define PTRACE_CONT PT_CONTINUE
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#endif
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int
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wait_for_attach_and_loop( int num )
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{
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kill( getpid( ), SIGSTOP );
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do_flops( NUM_FLOPS * num );
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kill( getpid( ), SIGSTOP );
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return 0;
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}
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int
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main( int argc, char **argv )
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{
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int status, retval, num_tests = 2, tmp;
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int EventSet1 = PAPI_NULL, EventSet2 = PAPI_NULL;
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int PAPI_event, PAPI_event2, mask1, mask2;
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int num_events1, num_events2;
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long long **values;
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long long elapsed_us, elapsed_cyc, elapsed_virt_us, elapsed_virt_cyc;
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char event_name[PAPI_MAX_STR_LEN], add_event_str[PAPI_MAX_STR_LEN];
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const PAPI_component_info_t *cmpinfo;
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pid_t pid;
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/* Set TESTS_QUIET variable */
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tests_quiet( argc, argv );
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/* init the library */
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retval = PAPI_library_init( PAPI_VER_CURRENT );
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if ( retval != PAPI_VER_CURRENT ) {
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test_fail( __FILE__, __LINE__, "PAPI_library_init", retval );
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}
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/* get component info */
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if ( ( cmpinfo = PAPI_get_component_info( 0 ) ) == NULL ) {
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test_fail( __FILE__, __LINE__, "PAPI_get_component_info", 0 );
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}
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/* see if we support attach */
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if ( cmpinfo->attach == 0 ) {
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test_skip( __FILE__, __LINE__,
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"Platform does not support attaching",0 );
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}
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/* fork! */
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pid = fork( );
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if ( pid < 0 ) {
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test_fail( __FILE__, __LINE__, "fork()", PAPI_ESYS );
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}
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/* if child, wait_for_attach_and_loop */
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if ( pid == 0 ) {
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exit( wait_for_attach_and_loop( 2 ) );
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}
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/* add PAPI_TOT_CYC and one of the events in
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PAPI_FP_INS, PAPI_FP_OPS or PAPI_TOT_INS,
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depending on the availability of the event
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on the platform */
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EventSet1 = add_two_events( &num_events1, &PAPI_event, &mask1 );
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EventSet2 = add_two_events( &num_events2, &PAPI_event2, &mask2 );
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if ( cmpinfo->attach_must_ptrace ) {
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if ( ptrace( PTRACE_ATTACH, pid, NULL, NULL ) == -1 ) {
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perror( "ptrace(PTRACE_ATTACH)" );
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return 1;
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}
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if ( waitpid( pid, &status, 0 ) == -1 ) {
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perror( "waitpid()" );
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exit( 1 );
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}
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if ( WIFSTOPPED( status ) == 0 ) {
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test_fail( __FILE__, __LINE__,
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"Child process didnt return true to WIFSTOPPED", 0 );
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}
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}
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retval = PAPI_attach( EventSet2, ( unsigned long ) pid );
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if ( retval != PAPI_OK ) {
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test_fail( __FILE__, __LINE__, "PAPI_attach", retval );
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}
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strcpy(event_name,"PAPI_TOT_INS");
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sprintf( add_event_str, "PAPI_add_event[%s]", event_name );
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/* num_events1 is greater than num_events2 so don't worry. */
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values = allocate_test_space( num_tests, num_events1 );
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/* get before values */
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elapsed_us = PAPI_get_real_usec( );
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elapsed_cyc = PAPI_get_real_cyc( );
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elapsed_virt_us = PAPI_get_virt_usec( );
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elapsed_virt_cyc = PAPI_get_virt_cyc( );
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/* Wait for the SIGSTOP. */
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if ( cmpinfo->attach_must_ptrace ) {
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if ( ptrace( PTRACE_CONT, pid, NULL, NULL ) == -1 ) {
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perror( "ptrace(PTRACE_CONT)" );
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return 1;
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}
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if ( waitpid( pid, &status, 0 ) == -1 ) {
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perror( "waitpid()" );
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exit( 1 );
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}
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if ( WIFSTOPPED( status ) == 0 ) {
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test_fail( __FILE__, __LINE__,
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"Child process didn't return true to WIFSTOPPED", 0 );
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}
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if ( WSTOPSIG( status ) != SIGSTOP ) {
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test_fail( __FILE__, __LINE__,
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"Child process didn't stop on SIGSTOP", 0 );
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}
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}
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retval = PAPI_start( EventSet1 );
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if ( retval != PAPI_OK ) {
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test_fail( __FILE__, __LINE__, "PAPI_start", retval );
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}
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retval = PAPI_start( EventSet2 );
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577717 |
if ( retval != PAPI_OK ) {
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test_fail( __FILE__, __LINE__, "PAPI_start", retval );
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}
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577717 |
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/* Wait for the SIGSTOP. */
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if ( cmpinfo->attach_must_ptrace ) {
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if ( ptrace( PTRACE_CONT, pid, NULL, NULL ) == -1 ) {
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perror( "ptrace(PTRACE_ATTACH)" );
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return 1;
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}
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if ( waitpid( pid, &status, 0 ) == -1 ) {
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perror( "waitpid()" );
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exit( 1 );
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577717 |
}
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577717 |
if ( WIFSTOPPED( status ) == 0 ) {
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577717 |
test_fail( __FILE__, __LINE__,
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"Child process didn't return true to WIFSTOPPED", 0 );
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577717 |
}
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if ( WSTOPSIG( status ) != SIGSTOP ) {
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test_fail( __FILE__, __LINE__,
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"Child process didn't stop on SIGSTOP", 0 );
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577717 |
}
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}
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elapsed_virt_us = PAPI_get_virt_usec( ) - elapsed_virt_us;
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elapsed_virt_cyc = PAPI_get_virt_cyc( ) - elapsed_virt_cyc;
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elapsed_us = PAPI_get_real_usec( ) - elapsed_us;
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577717 |
elapsed_cyc = PAPI_get_real_cyc( ) - elapsed_cyc;
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577717 |
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retval = PAPI_stop( EventSet1, values[0] );
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if ( retval != PAPI_OK ) {
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printf( "Warning: PAPI_stop returned error %d, probably ok.\n",
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|
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retval );
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|
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}
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retval = PAPI_stop( EventSet2, values[1] );
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if ( retval != PAPI_OK ) {
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printf( "Warning: PAPI_stop returned error %d, probably ok.\n",
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|
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retval );
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}
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remove_test_events( &EventSet1, mask1 );
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remove_test_events( &EventSet2, mask2 );
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if ( cmpinfo->attach_must_ptrace ) {
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if ( ptrace( PTRACE_CONT, pid, NULL, NULL ) == -1 ) {
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perror( "ptrace(PTRACE_CONT)" );
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return 1;
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}
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}
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if ( waitpid( pid, &status, 0 ) == -1 ) {
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perror( "waitpid()" );
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exit( 1 );
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577717 |
}
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if ( WIFEXITED( status ) == 0 ) {
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test_fail( __FILE__, __LINE__,
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|
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"Child process didn't return true to WIFEXITED", 0 );
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577717 |
}
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/* This code isn't necessary as we know the child has exited,
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it *may* return an error if the component so chooses.
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You should use read() instead. */
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577717 |
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if (!TESTS_QUIET) {
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printf( "Test case: multiple 3rd party attach start, stop.\n" );
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|
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printf( "-----------------------------------------------\n" );
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tmp = PAPI_get_opt( PAPI_DEFDOM, NULL );
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printf( "Default domain is: %d (%s)\n", tmp, stringify_all_domains( tmp ) );
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tmp = PAPI_get_opt( PAPI_DEFGRN, NULL );
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printf( "Default granularity is: %d (%s)\n", tmp,
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|
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stringify_granularity( tmp ) );
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printf( "Using %d iterations of c += a*b\n", NUM_FLOPS );
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printf( "-------------------------------------------------------------------------\n" );
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577717 |
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sprintf( add_event_str, "(PID self) %-12s : \t",
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event_name );
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printf( TAB1, add_event_str, values[0][1] );
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577717 |
sprintf( add_event_str, "(PID self) PAPI_TOT_CYC : \t" );
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printf( TAB1, add_event_str, values[0][0] );
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577717 |
sprintf( add_event_str, "(PID %jd) %-12s : \t", ( intmax_t ) pid,
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event_name );
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577717 |
printf( TAB1, add_event_str, values[1][1] );
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|
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577717 |
sprintf( add_event_str, "(PID %jd) PAPI_TOT_CYC : \t",
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( intmax_t ) pid );
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|
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printf( TAB1, add_event_str, values[1][0] );
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printf( TAB1, "Real usec : \t", elapsed_us );
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|
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printf( TAB1, "Real cycles : \t", elapsed_cyc );
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|
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577717 |
printf( TAB1, "Virt usec : \t", elapsed_virt_us );
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577717 |
printf( TAB1, "Virt cycles : \t", elapsed_virt_cyc );
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577717 |
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577717 |
printf( "-------------------------------------------------------------------------\n" );
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577717 |
|
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577717 |
printf( "Verification: none\n" );
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577717 |
|
|
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577717 |
}
|
|
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577717 |
|
|
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577717 |
test_pass( __FILE__ );
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|
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577717 |
|
|
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577717 |
return 0;
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|
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577717 |
}
|