test_speed.c revision 262398 
1/* Copyright (c) 2013, Vsevolod Stakhov
2 * All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions are met:
6 *       * Redistributions of source code must retain the above copyright
7 *         notice, this list of conditions and the following disclaimer.
8 *       * Redistributions in binary form must reproduce the above copyright
9 *         notice, this list of conditions and the following disclaimer in the
10 *         documentation and/or other materials provided with the distribution.
11 *
12 * THIS SOFTWARE IS PROVIDED ''AS IS'' AND ANY
13 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
14 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
15 * DISCLAIMED. IN NO EVENT SHALL AUTHOR BE LIABLE FOR ANY
16 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
17 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
18 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
19 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
20 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
21 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
22 */
23
24#include <sys/types.h>
25#include <sys/mman.h>
26#include <sys/stat.h>
27#include <sys/time.h>
28#include <stdio.h>
29#include <errno.h>
30#include <unistd.h>
31#include <fcntl.h>
32#include <time.h>
33
34#ifdef __APPLE__
35#include <mach/mach_time.h>
36#endif
37
38#include "ucl.h"
39
40static double
41get_ticks (void)
42{
43	double res;
44
45#ifdef __APPLE__
46	res = mach_absolute_time () / 1000000000.;
47#else
48	struct timespec ts;
49	clock_gettime (CLOCK_MONOTONIC, &ts);
50
51	res = (double)ts.tv_sec + ts.tv_nsec / 1000000000.;
52#endif
53
54	return res;
55}
56
57int
58main (int argc, char **argv)
59{
60	void *map;
61	struct ucl_parser *parser;
62	ucl_object_t *obj;
63	int fin;
64	unsigned char *emitted;
65	struct stat st;
66	const char *fname_in = NULL;
67	int ret = 0;
68	double start, end, seconds;
69
70	switch (argc) {
71	case 2:
72		fname_in = argv[1];
73		break;
74	}
75
76	fin = open (fname_in, O_RDONLY);
77	if (fin == -1) {
78		perror ("open failed");
79		exit (EXIT_FAILURE);
80	}
81	parser = ucl_parser_new (UCL_PARSER_ZEROCOPY);
82
83	(void)fstat (fin, &st);
84	map = mmap (NULL, st.st_size, PROT_READ, MAP_SHARED, fin, 0);
85	if (map == MAP_FAILED) {
86		perror ("mmap failed");
87		exit (EXIT_FAILURE);
88	}
89
90	close (fin);
91
92	start = get_ticks ();
93	ucl_parser_add_chunk (parser, map, st.st_size);
94
95	obj = ucl_parser_get_object (parser);
96	end = get_ticks ();
97
98	seconds = end - start;
99	printf ("ucl: parsed input in %.4f seconds\n", seconds);
100	if (ucl_parser_get_error(parser)) {
101		printf ("Error occurred: %s\n", ucl_parser_get_error(parser));
102		ret = 1;
103		goto err;
104	}
105
106	start = get_ticks ();
107	emitted = ucl_object_emit (obj, UCL_EMIT_CONFIG);
108	end = get_ticks ();
109
110	seconds = end - start;
111	printf ("ucl: emitted config in %.4f seconds\n", seconds);
112
113	free (emitted);
114
115	start = get_ticks ();
116	emitted = ucl_object_emit (obj, UCL_EMIT_JSON);
117	end = get_ticks ();
118
119	seconds = end - start;
120	printf ("ucl: emitted json in %.4f seconds\n", seconds);
121
122	free (emitted);
123
124	start = get_ticks ();
125	emitted = ucl_object_emit (obj, UCL_EMIT_JSON_COMPACT);
126	end = get_ticks ();
127
128	seconds = end - start;
129	printf ("ucl: emitted compact json in %.4f seconds\n", seconds);
130
131	free (emitted);
132
133	start = get_ticks ();
134	emitted = ucl_object_emit (obj, UCL_EMIT_YAML);
135	end = get_ticks ();
136
137	seconds = end - start;
138	printf ("ucl: emitted yaml in %.4f seconds\n", seconds);
139
140	free (emitted);
141
142	ucl_parser_free (parser);
143	ucl_object_unref (obj);
144
145err:
146	munmap (map, st.st_size);
147
148	return ret;
149}
150