src/timing.c

   1 /* This file is part of the YAZ toolkit.
   2  * Copyright (C) 1995-2008 Index Data
   3  * See the file LICENSE for details.
   4  */
   5
   6 /**
   7  * \file timing.c
   8  * \brief Timing Utilities
   9  */
  10
  11 #if HAVE_CONFIG_H
  12 #include <config.h>
  13 #endif
  14
  15 #ifdef WIN32
  16 #include <windows.h>
  17 #endif
  18 #include <stdlib.h>
  19
  20 #if HAVE_SYS_TIMES_H
  21 #include <sys/times.h>
  22 #endif
  23 #if HAVE_SYS_TIME_H
  24 #include <sys/time.h>
  25 #endif
  26 #include <time.h>
  27
  28 #include <yaz/xmalloc.h>
  29 #include <yaz/timing.h>
  30
  31 struct yaz_timing {
  32 #if HAVE_SYS_TIMES_H
  33     struct tms tms1, tms2;
  34 #endif
  35 #if HAVE_SYS_TIME_H
  36     struct timeval start_time, end_time;
  37 #endif
  38 #ifdef WIN32
  39     LONGLONG start_time, end_time;
  40     LONGLONG start_time_sys, start_time_user;
  41     LONGLONG end_time_sys, end_time_user;
  42 #endif
  43     double real_sec, user_sec, sys_sec;
  44 };
  45
  46 yaz_timing_t yaz_timing_create(void)
  47 {
  48     yaz_timing_t t = (yaz_timing_t) xmalloc(sizeof(*t));
  49     yaz_timing_start(t);
  50     return t;
  51 }
  52
  53 #ifdef WIN32
  54 static void get_process_time(ULONGLONG *lp_user, ULONGLONG *lp_sys)
  55 {
  56     FILETIME create_t, exit_t, sys_t, user_t;
  57     ULARGE_INTEGER li;
  58
  59     GetProcessTimes(GetCurrentProcess(), &create_t, &exit_t, &sys_t, &user_t);
  60     li.LowPart = user_t.dwLowDateTime;
  61     li.HighPart = user_t.dwHighDateTime;
  62     *lp_user = li.QuadPart;
  63
  64     li.LowPart = sys_t.dwLowDateTime;
  65     li.HighPart = sys_t.dwHighDateTime;
  66     *lp_sys = li.QuadPart;
  67 }
  68 static void get_date_as_largeinteger(LONGLONG *lp)
  69 {
  70     FILETIME f;
  71     ULARGE_INTEGER li;
  72     GetSystemTimeAsFileTime(&f);
  73     li.LowPart = f.dwLowDateTime;
  74     li.HighPart = f.dwHighDateTime;
  75
  76     *lp = li.QuadPart;
  77 }
  78 #endif
  79
  80 void yaz_timing_start(yaz_timing_t t)
  81 {
  82 #if HAVE_SYS_TIMES_H
  83     times(&t->tms1);
  84     t->user_sec = 0.0;
  85     t->sys_sec = 0.0;
  86 #else
  87     t->user_sec = -1.0;
  88     t->sys_sec = -1.0;
  89 #endif
  90     t->real_sec = -1.0;
  91 #if HAVE_SYS_TIME_H
  92     gettimeofday(&t->start_time, 0);
  93     t->real_sec = 0.0;
  94 #endif
  95 #ifdef WIN32
  96     t->real_sec = 0.0;
  97     t->user_sec = 0.0;
  98     t->sys_sec = 0.0;
  99     get_date_as_largeinteger(&t->start_time);
 100     get_process_time(&t->start_time_user, &t->start_time_sys);
 101 #endif
 102 }
 103
 104 void yaz_timing_stop(yaz_timing_t t)
 105 {
 106 #if HAVE_SYS_TIMES_H
 107     times(&t->tms2);
 108
 109     t->user_sec = (double) (t->tms2.tms_utime - t->tms1.tms_utime)/100;
 110     t->sys_sec = (double) (t->tms2.tms_stime - t->tms1.tms_stime)/100;
 111 #endif
 112 #if HAVE_SYS_TIME_H
 113     gettimeofday(&t->end_time, 0);
 114     t->real_sec = ((t->end_time.tv_sec - t->start_time.tv_sec) * 1000000.0 +
 115                    t->end_time.tv_usec - t->start_time.tv_usec) / 1000000;
 116
 117 #endif
 118 #ifdef WIN32
 119     get_date_as_largeinteger(&t->end_time);
 120     t->real_sec = (t->end_time - t->start_time) / 10000000.0;
 121
 122     get_process_time(&t->end_time_user, &t->end_time_sys);
 123     t->user_sec = (t->end_time_user - t->start_time_user) / 10000000.0;
 124     t->sys_sec = (t->end_time_sys - t->start_time_sys) / 10000000.0;
 125 #endif
 126 }
 127
 128 double yaz_timing_get_real(yaz_timing_t t)
 129 {
 130     return t->real_sec;
 131 }
 132
 133 double yaz_timing_get_user(yaz_timing_t t)
 134 {
 135     return t->user_sec;
 136 }
 137
 138 double yaz_timing_get_sys(yaz_timing_t t)
 139 {
 140     return t->sys_sec;
 141 }
 142
 143 void yaz_timing_destroy(yaz_timing_t *tp)
 144 {
 145     if (*tp)
 146     {
 147         xfree(*tp);
 148         *tp = 0;
 149     }
 150 }
 151
 152 /*
 153  * Local variables:
 154  * c-basic-offset: 4
 155  * indent-tabs-mode: nil
 156  * End:
 157  * vim: shiftwidth=4 tabstop=8 expandtab
 158  */
 159