alarm02.c

cygwin, 著名的在win32下模拟unix操作系统的东东

/*
 * Copyright (c) 2000 Silicon Graphics, Inc.  All Rights Reserved.
 * 
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of version 2 of the GNU General Public License as
 * published by the Free Software Foundation.
 * 
 * This program is distributed in the hope that it would be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 * 
 * Further, this software is distributed without any warranty that it is
 * free of the rightful claim of any third person regarding infringement
 * or the like.  Any license provided herein, whether implied or
 * otherwise, applies only to this software file.  Patent licenses, if
 * any, provided herein do not apply to combinations of this program with
 * other software, or any other product whatsoever.
 * 
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, write the Free Software Foundation, Inc., 59
 * Temple Place - Suite 330, Boston MA 02111-1307, USA.
 * 
 * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
 * Mountain View, CA  94043, or:
 * 
 * http://www.sgi.com 
 * 
 * For further information regarding this notice, see: 
 * 
 * http://oss.sgi.com/projects/GenInfo/NoticeExplan/
 */
/* $Id: alarm02.c,v 1.2 2000/09/06 14:21:53 duda Exp $ */
/**********************************************************
 *
 *    OS Test - Silicon Graphics, Inc.
 *
 *    TEST IDENTIFIER   : alarm02
 *
 *    TEST TITLE        : Boundary Value Test for alarm(2)
 *
 *    PARENT DOCUMENT   : almtds02
 *
 *    TEST CASE TOTAL   : 3
 *
 *    WALL CLOCK TIME   : 1
 *
 *    CPU TYPES         : ALL
 *
 *    BINARY LOCATION   : CUTS_BIN/rf_tests/sys
 *
 *    SOURCE LOCATION   : CUTS_SRC/src/tests/sys
 *
 *    AUTHOR            : Billy Jean Horne
 *
 *    CO-PILOT          : Kathy Olmsted
 *
 *    DATE STARTED      : 06/01/92
 *
 *    INITIAL RELEASE   : UNICOS 7.0
 *
 *    TEST CASES
 *      Test Case One - A call to alarm() shall not return an error if 
 *       seconds is a -1.
 *       Test FAILS if a non-zero value is returned.
 *      Test Case Two - A call to alarm() shall not return an error if
 *       seconds is the maximum unsigned integer (2**63).
 *       Test FAILS if a non-zero value is returned.
 *      Test Case Three - A call to alarm() shall not return an error if
 *       seconds is the maximum unsigned integer plus 1 ((2**63)+1).
 *       Test FAILS if a non-zero value is returned.
 *
 *    ENVIRONMENTAL NEEDS
 *      The libcuts.a and libsys.a libraries must be included in
 *      the compilation of this test.
 *
 *    DETAILED DESCRIPTION
 *
 *      Setup:
 *        Define a cleanup function.
 *
 *      Test:
 *       Loop for each test case.
 *        Execute alarm (0) system call to clear previous alarm.
 *        Check return code, if system call failed (return=-1)
 *           Issue a BROK message and exit the test.
 *        Call alarm() with boundary values for seconds.
 *        Verify that returned value is as expected.
 *        Report results.
 *
 *      Cleanup:
 *
 */
#include <sys/types.h>
#include <errno.h>
#include <sys/signal.h>
#include <limits.h>
#include "test.h"
#include "usctest.h"             /* required for usctest   */

void setup();
void cleanup();
void alarm_received();



char *TCID="alarm02";          /* Test program identifier.    */
int TST_TOTAL=3;                /* Total number of test cases. */
extern int Tst_count;      /* Test Case counter for tst_ * routines */

int received_alarm = 0;   /* Indicates a SIGALRM was received */

/************************************************************
 * Main program
 ***********************************************************/

int
main(int ac, char **av)
{

    /* Parameters for usc code  */
    int lc;             /* loop counter */
    const char *msg;          /* message returned from parse_opts */

    /* Parameters for alarm test */
    char *buf[] = { "-1", "ULONG_MAX", "ULONG_MAX+1"};
    unsigned long int sec[] = {-1, ULONG_MAX, ULONG_MAX+1};
    int exp[]                   = {0,0,0};
    int i;   
     

    /***************************************************************
     * parse standard options
     ***************************************************************/
    if ( (msg=parse_opts(ac, av, (option_t *)NULL, NULL)) != (char *) NULL ) {
        tst_brkm(TBROK, NULL, "OPTION PARSING ERROR - %s", msg);
	tst_exit();
    }

    /***************************************************************
     * perform global setup for test
     ***************************************************************/

    setup();

   /***************************************************************
    * check looping state 
    ***************************************************************/
    for (lc=0; TEST_LOOPING(lc); lc++) {
      
        /* reset Tst_count in case we are looping. */
      
        Tst_count=0;
      
	for (i=0;i<TST_TOTAL;i++) {

	    /* capture an SIGALRM signal */
	    received_alarm = 0;
	    signal(SIGALRM, alarm_received);

	    TEST (alarm (sec[i]));
	    /* reset the alarm */
	    alarm (0);
	    if (TEST_RETURN != 0) {
		tst_resm(TFAIL, 
		    "alarm(%u) returned %u, when %u was expected for value %s.", 
		     sec[i], TEST_RETURN, exp[i], buf[i]);
 
	    }
            /***************************************************************
             * only perform functional verification if flag set (-f not given)
             ***************************************************************/
	    else if (STD_FUNCTIONAL_TEST) {
		if (received_alarm == 1) {
		    tst_resm (TFAIL,
			"alarm(%u) returned %u but an alarm signal was received for value %s.",
			 sec[i], TEST_RETURN, buf[i]);
		} else  {
		    tst_resm (TPASS, 
			"alarm(%u) returned %u as expected for value %s.", 
			sec[i], TEST_RETURN, buf[i]);
		}

	    } /* End of STD_FUNCTIONAL_TEST */
        }   /* End of for loop */
        /*
         *  Reset alarm before cleanup.
         */
      
        alarm(0);
      
    }   /* End for TEST_LOOPING */
    
    cleanup();

    return 0;
}

/***************************************************************
 * setup() - performs all ONE TIME setup for this test.
 ***************************************************************/

void
setup()
{

     /* capture signals */
     tst_sig(NOFORK, DEF_HANDLER, cleanup);

     /* Pause if that option was specified */
     TEST_PAUSE;

     /* End setup() */

}

/***********************************************************
 * Cleanup:
 *  exit using tst_exit.
 ***********************************************************/

void
cleanup()
{
    /*
     * print timing stats if that option was specified.
     * print errno log if that option was specified.
     */
    TEST_CLEANUP;

    /* exit with return code appropriate for results */

    tst_exit();
}

void alarm_received()
{
  received_alarm = 1;
}