aboutsummaryrefslogtreecommitdiff
path: root/generic/perfos.c
blob: f2f1d05a16f455248ff0e7553074e5d104905d8c (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
/*
 * perfos.c -- Perfos modules.
 *
 * Authors		: Patrick Lecoanet.
 * Creation date	: 
 *
 * $Id$
 */

/*
 *  Copyright (c) 1993 - 2000 CENA, Patrick Lecoanet --
 *
 * This code is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Library General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This code is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Library General Public License for more details.
 *
 * You should have received a copy of the GNU Library General Public
 * License along with this code; if not, write to the Free
 * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 *
 */


#include "perfos.h"
#include "List.h"
#include "Types.h"

#include <X11/Xutil.h>


static const char rcsid[] = "$Id$";
static const char compile_id[]="$Compile: " __FILE__ " " __DATE__ " " __TIME__ " $";


static ZnList	Chronos = NULL;


/*
 **********************************************************************************
 *
 * HardwareSynchronize - Synchronise Xwindow.
 *
 **********************************************************************************
 */
static void
HardwareSynchronize(Display *test_display, Drawable test_window)
{
  XImage   *image;

  /* Synchronize yourself with the drawing engine by sending a
     XGetImage one pixel square. */

  image = XGetImage(test_display, test_window, 0, 0, 1, 1, ~0, ZPixmap);
  XDestroyImage(image);
}


/*
 **********************************************************************************
 *
 * GetUCTime - Return machine time. This is the sum of user and system
 *	times for the process so far.
 *
 **********************************************************************************
 */
static long
GetUCTime(void)
{
  struct tms	time;

  times(&time);
  return time.tms_utime + time.tms_stime;
}


/*
 **********************************************************************************
 *
 * GetCurrentTime - Return current time.
 *
 **********************************************************************************
 */
static long
GetCurrentTime(void)
{
  struct timeval start;

  gettimeofday(&start, NULL);
  return((start.tv_sec * 100) + (start.tv_usec / 10000));
}


/*
 **********************************************************************************
 *
 * XGetCurrentTime - return current time after Xwindow synchronize.
 *
 **********************************************************************************
 */
static long
XGetCurrentTime(Display *display, Drawable window)
{
  HardwareSynchronize(display, window);
  return(GetCurrentTime());
}


/*
 **********************************************************************************
 *
 * XCorrectionValue - Evaluate the correction value to apply
 *                    to counter the client-server round trip
 *		      time.
 *
 **********************************************************************************
 */
static long
XCorrectionValue(Display *display, Drawable window)
{ 
  int               i;
  long              start, stop;

  start = GetCurrentTime();
  for (i = 0; i < 5; i++) {
    HardwareSynchronize(display, window);
  }
  stop = GetCurrentTime();
  return((stop - start) / 5);
}

/*
 **********************************************************************************
 *
 * XStartChrono - Start a perf chrono with X synchronize.
 *
 **********************************************************************************
 */
void
XStartChrono(Chrono chrono, Display *display, Drawable window)
{
  chrono->current_correction = XCorrectionValue(display, window);
  chrono->current_delay = XGetCurrentTime(display, window);
}


/*
 **********************************************************************************
 *
 * XStopChrono - Stop a perf chrono with X synchronize.
 *
 **********************************************************************************
 */
void
XStopChrono(Chrono chrono, Display *display, Drawable window)
{
  chrono->total_delay = chrono->total_delay +
    (XGetCurrentTime(display, window) - 
     chrono->current_delay - chrono->current_correction);
  chrono->actions++;
}


/*
 **********************************************************************************
 *
 * StartChrono - Start a perf chrono in user time.
 *
 **********************************************************************************
 */
void
StartChrono(Chrono chrono)
{
  chrono->current_delay = GetCurrentTime();
}


/*
 **********************************************************************************
 *
 * StopChrono - Stop a perf chrono in user time.
 *
 **********************************************************************************
 */
void
StopChrono(Chrono chrono)
{
  chrono->total_delay = chrono->total_delay + (GetCurrentTime() - chrono->current_delay);
  chrono->actions++;
}


/*
 **********************************************************************************
 *
 * StartUCChrono - Start a perf chrono in uc time.
 *
 **********************************************************************************
 */
void
StartUCChrono(Chrono chrono)
{
  chrono->current_delay = GetUCTime();
}


/*
 **********************************************************************************
 *
 * StopUCChrono - Stop a perf chrono in uc time.
 *
 **********************************************************************************
 */
void
StopUCChrono(Chrono chrono)
{
  chrono->total_delay = chrono->total_delay + (GetUCTime() - chrono->current_delay);
  chrono->actions++;
}


/*
 **********************************************************************************
 *
 * PrintChronos - Print the currently available stats on all
 *                chronos registered so far.
 *
 **********************************************************************************
 */
void
PrintChronos(void)
{
  int		i, cnt;
  Chrono	*chrs;
  
  cnt = ZnListSize(Chronos);
  chrs = (Chrono *) ZnListArray(Chronos);
  for (i = 0; i < cnt; i++) {
    if (chrs[i]->actions != 0) {
      printf("%s : %ld ms on %d times\n",
             chrs[i]->message,
             chrs[i]->total_delay * 10 / chrs[i]->actions,
             chrs[i]->actions);
    }
  }
}


/*
 **********************************************************************************
 *
 * GetChrono - Return the number of runs and the total time of the Chrono.
 *
 **********************************************************************************
 */
void
GetChrono(Chrono	chrono,
	  long		*time,
	  int		*actions)
{
  if (time) {
    *time = chrono->total_delay*10;
  }
  if (actions) {
    *actions = chrono->actions;
  }
}


/*
 **********************************************************************************
 *
 * ResetChronos - Reset all chronos or only the specified.
 *
 **********************************************************************************
 */
void
ResetChronos(Chrono	chrono)
{
  int		i, cnt;
  Chrono	*chrs;

  if (chrono) {
    chrono->actions = 0;
    chrono->total_delay = 0;    
  }
  else {
    cnt = ZnListSize(Chronos);
    chrs = (Chrono *) ZnListArray(Chronos);
    for (i = 0; i < cnt; i++) {
      chrs[i]->actions = 0;
      chrs[i]->total_delay = 0;
    }
  }
}


/*
 **********************************************************************************
 *
 * NewChrono - Return a new initialized chrono associated with
 *             message.
 *
 **********************************************************************************
 */
Chrono
NewChrono(char *message)
{
  Chrono	new;

  if (!Chronos) {
    Chronos = ZnListNew(8, sizeof(Chrono));
  }

  new = (Chrono) ZnMalloc(sizeof(ChronoRec));
  new->actions = 0;
  new->total_delay = 0;
  new->message = message;

  ZnListAdd(Chronos, &new, ZnListTail);

  return new;
}

/*
 **********************************************************************************
 *
 * FreeChrono - Free the resources of a chrono.
 *
 **********************************************************************************
 */
void
FreeChrono(Chrono	chrono)
{
  int		i;
  Chrono	*chrs = ZnListArray(Chronos);
  
  ZnFree(chrono);

  for (i = ZnListSize(Chronos)-1; i >= 0; i--) {
    if (chrs[i] == chrono) {
      ZnListDelete(Chronos, i);
      break;
    }
  }
}