fork2.c

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/*
* File:    fork2.c
* Author:  Philip Mucci
*          mucci@cs.utk.edu
* Mods:    <your name here>
*          <your email address>
*/
 
/* This file performs the following test:
 
   PAPI_library_init()
         fork();
         /    \
     parent   child
     wait()   PAPI_shutdown()
              PAPI_library_init()
 
 */
 
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/wait.h>
 
#include "papi.h"
#include "papi_test.h"
 
 
int
main( int argc, char **argv )
{
    int retval;
    int status;
 
    tests_quiet( argc, argv );  /* Set TESTS_QUIET variable */
 
    retval = PAPI_library_init( PAPI_VER_CURRENT );
    if ( retval != PAPI_VER_CURRENT )
        test_fail( __FILE__, __LINE__, "main PAPI_library_init", retval );
 
    if ( fork(  ) == 0 ) {
        PAPI_shutdown();
 
        retval = PAPI_library_init( PAPI_VER_CURRENT );
        if ( retval != PAPI_VER_CURRENT )
            test_fail( __FILE__, __LINE__, "forked PAPI_library_init", retval );
        exit( 0 );
    } else {
        wait( &status );
        if ( WEXITSTATUS( status ) != 0 )
            test_fail( __FILE__, __LINE__, "fork", WEXITSTATUS( status ) );
    }
 
    test_pass( __FILE__ );
 
    return 0;
 
}