forkexec3.c

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/* 
* File:    forkexec3.c
* Author:  Philip Mucci
*          mucci@cs.utk.edu
* Mods:    <your name here>
*          <your email address>
*/

/* This file performs the following test: 

    PAPI_library_init()
    PAPI_shutdown()
        fork()
       /      \
    parent   child
    wait()   PAPI_library_init()
             **unlike forkexec2, no shutdown here**
             execlp()
             PAPI_library_init()

 */

#include "papi_test.h"
#include <sys/wait.h>

int
main( int argc, char **argv )
{
    int retval;
    int status;

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

    if ( ( argc > 1 ) && ( strcmp( argv[1], "xxx" ) == 0 ) ) {
        retval = PAPI_library_init( PAPI_VER_CURRENT );
        if ( retval != PAPI_VER_CURRENT )
            test_fail( __FILE__, __LINE__, "execed PAPI_library_init", retval );
    } else {
        retval = PAPI_library_init( PAPI_VER_CURRENT );
        if ( retval != PAPI_VER_CURRENT )
            test_fail( __FILE__, __LINE__, "main PAPI_library_init", retval );

        PAPI_shutdown(  );

        if ( fork(  ) == 0 ) {
            retval = PAPI_library_init( PAPI_VER_CURRENT );
            if ( retval != PAPI_VER_CURRENT )
                test_fail( __FILE__, __LINE__, "forked PAPI_library_init",
                           retval );

            if ( execlp( argv[0], argv[0], "xxx", NULL ) == -1 )
                test_fail( __FILE__, __LINE__, "execlp", PAPI_ESYS );
        } else {
            wait( &status );
            if ( WEXITSTATUS( status ) != 0 )
                test_fail( __FILE__, __LINE__, "fork", WEXITSTATUS( status ) );
        }
    }

    test_pass( __FILE__, NULL, 0 );
    exit( 1 );
}