1 /*

     2  * Copyright (c) 1993 George V. Neville-Neil

     3  * All rights reserved.

     4  *

     5  * Redistribution and use in source and binary forms, with or without

     6  * modification, are permitted provided that the following conditions

     7  * are met:

     8  * 1. Redistributions of source code must retain the above copyright

     9  *    notice, this list of conditions and the following disclaimer.

    10  * 2. Redistributions in binary form must reproduce the above copyright

    11  *    notice, this list of conditions and the following disclaimer in the

    12  *    documentation and/or other materials provided with the distribution.

    13  * 3. The name, George Neville-Neil may not be used to endorse or promote

    14  *    products derived from this software without specific prior

    15  *    written permission.

    16  *

    17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR

    18  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

    19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE

    20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE

    21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL

    22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS

    23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)

    24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT

    25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY

    26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF

    27  * SUCH DAMAGE.

    28  */

    29 

    30 #ifndef _TIMING_H_

    31 #define _TIMING_H_

    32 

    33 #ifdef TIME_WITH_SYS_TIME

    34 #include <sys/time.h>

    35 #include <time.h>

    36 #else /* !TIME_WITH_SYS_TIME */

    37 #ifdef HAVE_SYS_TIME_H

    38 #include <sys/time.h>

    39 #else /* !HAVE_SYS_TIME_H */

    40 #include <time.h>

    41 #endif /* !HAVE_SYS_TIME_H */

    42 #endif /* !TIME_WITH_SYS_TIME */

    43 

    44 static struct timeval aftertp, beforetp;

    45 

    46 #define BEGINTIMING gettimeofday(&beforetp, NULL)

    47 

    48 #define ENDTIMING gettimeofday(&aftertp, NULL); \

    49     if(beforetp.tv_usec > aftertp.tv_usec) \

    50     {  \

    51          aftertp.tv_usec += 1000000;  \

    52          aftertp.tv_sec--; \

    53     }

    54 

    55 #define TIMINGUS (((aftertp.tv_sec - beforetp.tv_sec) * 1000000) + \

    56 		  (aftertp.tv_usec - beforetp.tv_usec))

    57 

    58 #define TIMINGMS (((aftertp.tv_sec - beforetp.tv_sec) * 1000) + \

    59 		  ((aftertp.tv_usec - beforetp.tv_usec) / 1000))

    60 

    61 #define TIMINGS  ((aftertp.tv_sec - beforetp.tv_sec) + \

    62 		  (aftertp.tv_usec - beforetp.tv_usec) / 1000000)

    63 

    64 #endif /* _TIMING_H_ */