/Modules/timing.h

http://unladen-swallow.googlecode.com/ · C++ Header · 64 lines · 27 code · 9 blank · 28 comment · 1 complexity · 57d4dbc6f2efaeb7238b5cd930e5bb65 MD5 · raw file

  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. #ifndef _TIMING_H_
  30. #define _TIMING_H_
  31. #ifdef TIME_WITH_SYS_TIME
  32. #include <sys/time.h>
  33. #include <time.h>
  34. #else /* !TIME_WITH_SYS_TIME */
  35. #ifdef HAVE_SYS_TIME_H
  36. #include <sys/time.h>
  37. #else /* !HAVE_SYS_TIME_H */
  38. #include <time.h>
  39. #endif /* !HAVE_SYS_TIME_H */
  40. #endif /* !TIME_WITH_SYS_TIME */
  41. static struct timeval aftertp, beforetp;
  42. #define BEGINTIMING gettimeofday(&beforetp, NULL)
  43. #define ENDTIMING gettimeofday(&aftertp, NULL); \
  44. if(beforetp.tv_usec > aftertp.tv_usec) \
  45. { \
  46. aftertp.tv_usec += 1000000; \
  47. aftertp.tv_sec--; \
  48. }
  49. #define TIMINGUS (((aftertp.tv_sec - beforetp.tv_sec) * 1000000) + \
  50. (aftertp.tv_usec - beforetp.tv_usec))
  51. #define TIMINGMS (((aftertp.tv_sec - beforetp.tv_sec) * 1000) + \
  52. ((aftertp.tv_usec - beforetp.tv_usec) / 1000))
  53. #define TIMINGS ((aftertp.tv_sec - beforetp.tv_sec) + \
  54. (aftertp.tv_usec - beforetp.tv_usec) / 1000000)
  55. #endif /* _TIMING_H_ */