summaryrefslogtreecommitdiff
path: root/perf/cairo-perf-report.c
blob: 38bdc0cd4d735cd0851e85f15df61c9bc421dbc1 (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
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
/*
 * Copyright © 2006 Red Hat, Inc.
 *
 * Permission to use, copy, modify, distribute, and sell this software
 * and its documentation for any purpose is hereby granted without
 * fee, provided that the above copyright notice appear in all copies
 * and that both that copyright notice and this permission notice
 * appear in supporting documentation, and that the name of the
 * copyright holders not be used in advertising or publicity
 * pertaining to distribution of the software without specific,
 * written prior permission. The copyright holders make no
 * representations about the suitability of this software for any
 * purpose.  It is provided "as is" without express or implied
 * warranty.
 *
 * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS
 * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
 * FITNESS, IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY
 * SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
 * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
 * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
 * SOFTWARE.
 *
 * Authors: Carl Worth <cworth@cworth.org>
 */

#include "cairo-missing.h"
#include "cairo-perf.h"
#include "cairo-stats.h"

/* We use _GNU_SOURCE for getline and strndup if available. */
#ifndef _GNU_SOURCE
# define _GNU_SOURCE
#endif
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <ctype.h>
#include <math.h>
#include <assert.h>
#ifdef HAVE_LIBGEN_H
#include <libgen.h>
#endif

#ifdef _MSC_VER
static long long
strtoll (const char  *nptr,
	 char	    **endptr,
	 int	      base);

static char *
basename (char *path);
#endif

/* Ad-hoc parsing, macros with a strong dependence on the calling
 * context, and plenty of other ugliness is here.  But at least it's
 * not perl... */
#define parse_error(...) fprintf(stderr, __VA_ARGS__); return TEST_REPORT_STATUS_ERROR;
#define skip_char(c)							\
do {									\
    if (*s && *s == (c)) {						\
	s++;								\
    } else {								\
	 parse_error ("expected '%c' but found '%c'", c, *s);		\
    }									\
} while (0)
#define skip_space() while (*s && (*s == ' ' || *s == '\t')) s++;
#define parse_int(result)						\
do {									\
    (result) = strtol (s, &end, 10);					\
    if (*s && end != s) {						\
	s = end;							\
    } else {								\
	parse_error("expected integer but found %s", s);		\
    }									\
} while (0)
#define parse_long_long(result) 					\
do {									\
    (result) = strtoll (s, &end, 10);					\
    if (*s && end != s) {						\
	s = end;							\
    } else {								\
	parse_error("expected integer but found %s", s);		\
    }									\
} while (0)
#define parse_double(result)						\
do {									\
    (result) = strtod (s, &end);					\
    if (*s && end != s) {						\
	s = end;							\
    } else {								\
	parse_error("expected floating-point value but found %s", s);	\
    }									\
} while (0)
/* Here a string is simply a sequence of non-whitespace */
#define parse_string(result)						\
do {									\
    for (end = s; *end; end++)						\
	if (isspace (*end))						\
	    break;							\
    (result) = strndup (s, end - s);					\
    if ((result) == NULL) {						\
	fprintf (stderr, "Out of memory.\n");				\
	exit (1);							\
    }									\
    s = end;								\
} while (0)

static test_report_status_t
test_report_parse (test_report_t *report,
		   int fileno,
		   char 	 *line,
		   char 	 *configuration)
{
    char *end;
    char *s = line;
    cairo_bool_t is_raw = FALSE;
    double min_time, median_time;

    /* The code here looks funny unless you understand that these are
     * all macro calls, (and then the code just looks sick). */
    if (*s == '\n')
	return TEST_REPORT_STATUS_COMMENT;

    skip_char ('[');
    skip_space ();
    if (*s == '#')
	return TEST_REPORT_STATUS_COMMENT;
    if (*s == '*') {
	s++;
	is_raw = TRUE;
    } else {
	parse_int (report->id);
    }
    skip_char (']');

    skip_space ();

    report->fileno = fileno;
    report->configuration = configuration;
    parse_string (report->backend);
    end = strrchr (report->backend, '.');
    if (end)
	*end++ = '\0';
    report->content = end ? end : xstrdup ("???");

    skip_space ();

    parse_string (report->name);
    end = strrchr (report->name, '.');
    if (end)
	*end++ = '\0';
    report->size = end ? atoi (end) : 0;

    skip_space ();

    report->samples = NULL;
    report->samples_size = 0;
    report->samples_count = 0;

    if (is_raw) {
	parse_double (report->stats.ticks_per_ms);
	skip_space ();

	report->samples_size = 5;
	report->samples = xmalloc (report->samples_size * sizeof (cairo_time_t));
	report->stats.min_ticks = 0;
	do {
	    if (report->samples_count == report->samples_size) {
		report->samples_size *= 2;
		report->samples = xrealloc (report->samples,
					    report->samples_size * sizeof (cairo_time_t));
	    }
	    parse_long_long (report->samples[report->samples_count]);
	    if (report->samples_count == 0) {
		report->stats.min_ticks =
		    report->samples[report->samples_count];
	    } else if (report->stats.min_ticks >
		       report->samples[report->samples_count]){
		report->stats.min_ticks =
		    report->samples[report->samples_count];
	    }
	    report->samples_count++;
	    skip_space ();
	} while (*s && *s != '\n');
	report->stats.iterations = 0;
	skip_char ('\n');
    } else {
	parse_double (report->stats.min_ticks);
	skip_space ();

	parse_double (min_time);
	report->stats.ticks_per_ms = report->stats.min_ticks / min_time;

	skip_space ();

	parse_double (median_time);
	report->stats.median_ticks = median_time * report->stats.ticks_per_ms;

	skip_space ();

	parse_double (report->stats.std_dev);
	report->stats.std_dev /= 100.0;
	skip_char ('%');

	skip_space ();

	parse_int (report->stats.iterations);

	skip_space ();
	skip_char ('\n');
    }

    return TEST_REPORT_STATUS_SUCCESS;
}

/* We provide hereafter a win32 implementation of the basename
 * and strtoll functions which are not available otherwise.
 * The basename function is fully compliant to its GNU specs.
 */
#ifdef _MSC_VER
long long
strtoll (const char  *nptr,
	 char	    **endptr,
	 int	      base)
{
    return _atoi64(nptr);
}

static char *
basename (char *path)
{
    char *end, *s;

    end = (path + strlen(path) - 1);
    while (end && (end >= path + 1) && (*end == '/')) {
	*end = '\0';
	end--;
    }

    s = strrchr(path, '/');
    if (s) {
	if (s == end) {
	    return s;
	} else {
	    return s+1;
	}
    } else {
	return path;
    }
}
#endif /* ifndef _MSC_VER */

int
test_report_cmp_backend_then_name (const void *a,
				   const void *b)
{
    const test_report_t *a_test = a;
    const test_report_t *b_test = b;

    int cmp;

    cmp = strcmp (a_test->backend, b_test->backend);
    if (cmp)
	return cmp;

    cmp = strcmp (a_test->content, b_test->content);
    if (cmp)
	return cmp;

    /* A NULL name is a list-termination marker, so force it last. */
    if (a_test->name == NULL)
	if (b_test->name == NULL)
	    return 0;
	else
	    return 1;
    else if (b_test->name == NULL)
	return -1;

    cmp = strcmp (a_test->name, b_test->name);
    if (cmp)
	return cmp;

    if (a_test->size < b_test->size)
	return -1;
    if (a_test->size > b_test->size)
	return 1;

    return 0;
}

int
test_report_cmp_name (const void *a,
		      const void *b)
{
    const test_report_t *a_test = a;
    const test_report_t *b_test = b;

    int cmp;

    /* A NULL name is a list-termination marker, so force it last. */
    if (a_test->name == NULL)
	if (b_test->name == NULL)
	    return 0;
	else
	    return 1;
    else if (b_test->name == NULL)
	return -1;

    cmp = strcmp (a_test->name, b_test->name);
    if (cmp)
	return cmp;

    if (a_test->size < b_test->size)
	return -1;
    if (a_test->size > b_test->size)
	return 1;

    return 0;
}

void
cairo_perf_report_sort_and_compute_stats (cairo_perf_report_t *report,
					  int (*cmp) (const void*, const void*))
{
    test_report_t *base, *next, *last, *t;

    if (cmp == NULL)
	cmp = test_report_cmp_backend_then_name;

    /* First we sort, since the diff needs both lists in the same
     * order */
    qsort (report->tests, report->tests_count, sizeof (test_report_t), cmp);

    /* The sorting also brings all related raw reports together so we
     * can condense them and compute the stats.
     */
    base = &report->tests[0];
    last = &report->tests[report->tests_count - 1];
    while (base <= last) {
	next = base+1;
	if (next <= last) {
	    while (next <= last &&
		   test_report_cmp_backend_then_name (base, next) == 0)
	    {
		next++;
	    }
	    if (next != base) {
		unsigned int new_samples_count = base->samples_count;
		for (t = base + 1; t < next; t++)
		    new_samples_count += t->samples_count;
		if (new_samples_count > base->samples_size) {
		    base->samples_size = new_samples_count;
		    base->samples = xrealloc (base->samples,
					      base->samples_size * sizeof (cairo_time_t));
		}
		for (t = base + 1; t < next; t++) {
		    memcpy (&base->samples[base->samples_count], t->samples,
			    t->samples_count * sizeof (cairo_time_t));
		    base->samples_count += t->samples_count;
		}
	    }
	}
	if (base->samples)
	    _cairo_stats_compute (&base->stats, base->samples, base->samples_count);
	base = next;
    }
}

void
cairo_perf_report_load (cairo_perf_report_t *report,
			const char *filename, int id,
			int (*cmp) (const void *, const void *))
{
    FILE *file;
    test_report_status_t status;
    int line_number = 0;
    char *line = NULL;
    size_t line_size = 0;
    char *configuration;
    char *dot;
    char *baseName;
    const char *name;

    name = filename;
    if (name == NULL)
	name = "stdin";

    configuration = xstrdup (name);
    baseName = basename (configuration);
    report->configuration = xstrdup (baseName);
    free (configuration);

    dot = strrchr (report->configuration, '.');
    if (dot)
	*dot = '\0';

    report->name = name;
    report->tests_size = 16;
    report->tests = xmalloc (report->tests_size * sizeof (test_report_t));
    report->tests_count = 0;
    report->fileno = id;

    if (filename == NULL) {
	file = stdin;
    } else {
	file = fopen (filename, "r");
	if (file == NULL) {
	    fprintf (stderr, "Failed to open %s: %s\n",
		     filename, strerror (errno));
	    exit (1);
	}
    }

    while (1) {
	if (report->tests_count == report->tests_size) {
	    report->tests_size *= 2;
	    report->tests = xrealloc (report->tests,
				      report->tests_size * sizeof (test_report_t));
	}

	line_number++;
	if (getline (&line, &line_size, file) == -1)
	    break;

	status = test_report_parse (&report->tests[report->tests_count],
				    id, line, report->configuration);
	if (status == TEST_REPORT_STATUS_ERROR)
	    fprintf (stderr, "Ignoring unrecognized line %d of %s:\n%s",
		     line_number, filename, line);
	if (status == TEST_REPORT_STATUS_SUCCESS)
	    report->tests_count++;
	/* Do nothing on TEST_REPORT_STATUS_COMMENT */
    }

    free (line);

    if (filename != NULL)
	fclose (file);

    cairo_perf_report_sort_and_compute_stats (report, cmp);

    /* Add one final report with a NULL name to terminate the list. */
    if (report->tests_count == report->tests_size) {
	report->tests_size *= 2;
	report->tests = xrealloc (report->tests,
				  report->tests_size * sizeof (test_report_t));
    }
    report->tests[report->tests_count].name = NULL;
}