src/common/timing.h

   1 /*
   2  * Sylpheed -- a GTK+ based, lightweight, and fast e-mail client
   3  * Copyright (C) 2005-2012 Colin Leroy <colin@colino.net> & the Claws Mail team
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 3 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program. If not, see <http://www.gnu.org/licenses/>.
  17  *
  18  */
  19
  20 /*
  21  * This is a (quite naive) timer, to help determine the speed of various
  22  * functions of Claws. By default START_TIMING() and END_TIMING() are NOPS,
  23  * so that nothing gets printed out. If you change the #if, however, you'll
  24  * be able to get functions timing information. As the implementation is
  25  * naive, START_TIMING("message"); must be present just at the end of a
  26  * declaration block (or compilation would fail with gcc 2.x), and the
  27  * END_TIMING() call must be in the same scope.
  28  */
  29 #ifndef __TIMING_H__
  30 #define __TIMING_H__
  31
  32 #include <glib.h>
  33 #include <sys/time.h>
  34 #ifdef HAVE_CONFIG_H
  35 #include "claws-features.h"
  36 #endif
  37
  38 #include "utils.h"
  39 # define mytimersub(a, b, result)                                             \
  40   do {                                                                        \
  41     (result)->tv_sec = (a)->tv_sec - (b)->tv_sec;                             \
  42     (result)->tv_usec = (a)->tv_usec - (b)->tv_usec;                          \
  43     if ((result)->tv_usec < 0) {                                              \
  44       --(result)->tv_sec;                                                     \
  45       (result)->tv_usec += 1000000;                                           \
  46     }                                                                         \
  47   } while (0)
  48
  49 #if 0 /* set to 0 to measure times at various places */
  50 #define START_TIMING(str) do {} while(0);
  51 #define END_TIMING() do {} while(0);
  52 #else
  53
  54 #ifdef G_OS_WIN32
  55
  56 #include <w32lib.h>
  57
  58 /* no {} by purpose */
  59 #define START_TIMING(str)                                               \
  60         LARGE_INTEGER frequency;                                        \
  61         LARGE_INTEGER start;                                            \
  62         LARGE_INTEGER end;                                              \
  63         LARGE_INTEGER diff;                                             \
  64         const char *timing_name=str;                                    \
  65         QueryPerformanceFrequency (&frequency);                         \
  66         QueryPerformanceCounter (&start);                               \
  67
  68 #define END_TIMING()                                                    \
  69         QueryPerformanceCounter (&end);                                 \
  70         diff.QuadPart = (double)                                        \
  71                 ((end.QuadPart - start.QuadPart)        \
  72                 * (double)1000.0/(double)frequency.QuadPart);           \
  73         debug_print("TIMING %s: %ds%03dms\n",                           \
  74                 timing_name, (unsigned int) (diff.QuadPart / 1000000),  \
  75                 (unsigned int) ((diff.QuadPart / 1000) % 1000));
  76
  77 #else
  78 /* no {} by purpose */
  79 #define START_TIMING(str)                                               \
  80         struct timeval start;                                           \
  81         struct timeval end;                                             \
  82         struct timeval diff;                                            \
  83         const char *timing_name=str;                                    \
  84         gettimeofday(&start, NULL);
  85
  86 #ifdef __GLIBC__
  87 #define END_TIMING()                                                    \
  88         gettimeofday(&end, NULL);                                       \
  89         mytimersub(&end, &start, &diff);                                \
  90         debug_print("TIMING %s %s: %ds%03dms\n",                        \
  91                 __FUNCTION__,                                           \
  92                 timing_name, (unsigned int)diff.tv_sec,                 \
  93                 (unsigned int)diff.tv_usec/1000);
  94 #else
  95 #define END_TIMING()                                                    \
  96         gettimeofday(&end, NULL);                                       \
  97         mytimersub(&end, &start, &diff);                                \
  98         debug_print("TIMING %s: %ds%03dms\n",                           \
  99                 timing_name, (unsigned int)diff.tv_sec,                 \
 100                 (unsigned int)diff.tv_usec/1000);
 101 #endif
 102
 103 #endif
 104 #endif
 105 #endif