src/timing.c

   1 /* This file is part of the YAZ toolkit.
   2  * Copyright (C) 1995-2013 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 #else
  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 #endif
  44     double real_sec, user_sec, sys_sec;
  45 };
  46
  47 yaz_timing_t yaz_timing_create(void)
  48 {
  49     yaz_timing_t t = (yaz_timing_t) xmalloc(sizeof(*t));
  50     yaz_timing_start(t);
  51     return t;
  52 }
  53
  54 #ifdef WIN32
  55 static void get_process_time(ULONGLONG *lp_user, ULONGLONG *lp_sys)
  56 {
  57     FILETIME create_t, exit_t, sys_t, user_t;
  58     ULARGE_INTEGER li;
  59
  60     GetProcessTimes(GetCurrentProcess(), &create_t, &exit_t, &sys_t, &user_t);
  61     li.LowPart = user_t.dwLowDateTime;
  62     li.HighPart = user_t.dwHighDateTime;
  63     *lp_user = li.QuadPart;
  64
  65     li.LowPart = sys_t.dwLowDateTime;
  66     li.HighPart = sys_t.dwHighDateTime;
  67     *lp_sys = li.QuadPart;
  68 }
  69 static void get_date_as_largeinteger(LONGLONG *lp)
  70 {
  71     FILETIME f;
  72     ULARGE_INTEGER li;
  73     GetSystemTimeAsFileTime(&f);
  74     li.LowPart = f.dwLowDateTime;
  75     li.HighPart = f.dwHighDateTime;
  76
  77     *lp = li.QuadPart;
  78 }
  79 #endif
  80
  81 void yaz_timing_start(yaz_timing_t t)
  82 {
  83 #if HAVE_SYS_TIMES_H
  84     times(&t->tms1);
  85     t->user_sec = 0.0;
  86     t->sys_sec = 0.0;
  87 #else
  88     t->user_sec = -1.0;
  89     t->sys_sec = -1.0;
  90 #endif
  91     t->real_sec = -1.0;
  92 #if HAVE_SYS_TIME_H
  93     gettimeofday(&t->start_time, 0);
  94     t->real_sec = 0.0;
  95 #else
  96 #ifdef WIN32
  97     t->real_sec = 0.0;
  98     t->user_sec = 0.0;
  99     t->sys_sec = 0.0;
 100     get_date_as_largeinteger(&t->start_time);
 101     get_process_time(&t->start_time_user, &t->start_time_sys);
 102 #endif
 103 #endif
 104 }
 105
 106 void yaz_timing_stop(yaz_timing_t t)
 107 {
 108 #if HAVE_SYS_TIMES_H
 109     times(&t->tms2);
 110
 111     t->user_sec = (double) (t->tms2.tms_utime - t->tms1.tms_utime)/100;
 112     t->sys_sec = (double) (t->tms2.tms_stime - t->tms1.tms_stime)/100;
 113 #endif
 114 #if HAVE_SYS_TIME_H
 115     gettimeofday(&t->end_time, 0);
 116     t->real_sec = ((t->end_time.tv_sec - t->start_time.tv_sec) * 1000000.0 +
 117                    t->end_time.tv_usec - t->start_time.tv_usec) / 1000000;
 118 #else
 119 #ifdef WIN32
 120     get_date_as_largeinteger(&t->end_time);
 121     t->real_sec = (t->end_time - t->start_time) / 10000000.0;
 122
 123     get_process_time(&t->end_time_user, &t->end_time_sys);
 124     t->user_sec = (t->end_time_user - t->start_time_user) / 10000000.0;
 125     t->sys_sec = (t->end_time_sys - t->start_time_sys) / 10000000.0;
 126 #endif
 127 #endif
 128 }
 129
 130 double yaz_timing_get_real(yaz_timing_t t)
 131 {
 132     return t->real_sec;
 133 }
 134
 135 double yaz_timing_get_user(yaz_timing_t t)
 136 {
 137     return t->user_sec;
 138 }
 139
 140 double yaz_timing_get_sys(yaz_timing_t t)
 141 {
 142     return t->sys_sec;
 143 }
 144
 145 void yaz_timing_destroy(yaz_timing_t *tp)
 146 {
 147     if (*tp)
 148     {
 149         xfree(*tp);
 150         *tp = 0;
 151     }
 152 }
 153
 154 /*
 155  * Local variables:
 156  * c-basic-offset: 4
 157  * c-file-style: "Stroustrup"
 158  * indent-tabs-mode: nil
 159  * End:
 160  * vim: shiftwidth=4 tabstop=8 expandtab
 161  */
 162