/*

* File:    forkexec2.c

* Author:  Philip Mucci

*          mucci@cs.utk.edu

*/

/* This file performs the following test:

    PAPI_library_init()

    PAPI_shutdown()

        fork()

       /      \

   parent     child

   wait()     PAPI_library_init()

              PAPI_shutdown()

              execlp()

	      PAPI_library_init()

 */

#include <stdio.h>

#include <stdlib.h>

#include <string.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;

	int quiet;

	/* Set TESTS_QUIET variable */

	quiet = tests_quiet( argc, argv );

	if ( ( argc > 1 ) && ( strcmp( argv[1], "xxx" ) == 0 ) ) {

		/* In child */

		retval = PAPI_library_init( PAPI_VER_CURRENT );

		if ( retval != PAPI_VER_CURRENT ) {

			test_fail( __FILE__, __LINE__, "execed PAPI_library_init", retval );

		}

		return 0;

	} else {

		if (!quiet) printf("Testing fork/PAPI_init/PAPI_shudtdown/exec/PAPI_init\n");

		/* Init PAPI */

		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 ) {

			/* Init PAPI in child before exec */

			retval = PAPI_library_init( PAPI_VER_CURRENT );

			if ( retval != PAPI_VER_CURRENT ) {

				test_fail( __FILE__, __LINE__, "forked PAPI_library_init",

						   retval );

			}

			PAPI_shutdown(  );

			if ( execlp( argv[0], argv[0], "xxx", NULL ) == -1 ) {

				test_fail( __FILE__, __LINE__, "execlp", PAPI_ESYS );

			}

		} else {

			/* In parent, wait for child to finish */

			wait( &status );

			if ( WEXITSTATUS( status ) != 0 ) {

				test_fail( __FILE__, __LINE__, "fork", WEXITSTATUS( status ) );

			}

		}

	}

	test_pass( __FILE__ );

	return 0;

}