diffie-hellman: Add a bool return value to get_my_public_value()
[strongswan.git] / scripts / malloc_speed.c
1 /*
2 * Copyright (C) 2013 Martin Willi
3 * Copyright (C) 2013 revosec aG
4 *
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License as published by the
7 * Free Software Foundation; either version 2 of the License, or (at your
8 * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
9 *
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
12 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
13 * for more details.
14 */
15
16 #include <stdio.h>
17 #include <time.h>
18 #include <library.h>
19 #include <utils/debug.h>
20
21 #ifdef HAVE_MALLINFO
22 #include <malloc.h>
23 #endif /* HAVE_MALLINFO */
24
25 static void start_timing(struct timespec *start)
26 {
27 clock_gettime(CLOCK_THREAD_CPUTIME_ID, start);
28 }
29
30 static double end_timing(struct timespec *start)
31 {
32 struct timespec end;
33
34 clock_gettime(CLOCK_THREAD_CPUTIME_ID, &end);
35 return (end.tv_nsec - start->tv_nsec) / 1000000000.0 +
36 (end.tv_sec - start->tv_sec) * 1.0;
37 }
38
39 static void print_mallinfo()
40 {
41 #ifdef HAVE_MALLINFO
42 struct mallinfo mi = mallinfo();
43
44 printf("malloc: sbrk %d, mmap %d, used %d, free %d\n",
45 mi.arena, mi.hblkhd, mi.uordblks, mi.fordblks);
46 #endif /* HAVE_MALLINFO */
47 }
48
49 #define ALLOCS 1024
50 #define ROUNDS 2048
51
52 int main(int argc, char *argv[])
53 {
54 struct timespec timing;
55 int i, round;
56 void *m[ALLOCS];
57 /* a random set of allocations we test */
58 int sizes[16] = { 1, 13, 100, 1000, 16, 10000, 50, 17,
59 123, 32, 8, 64, 8096, 1024, 123, 9 };
60
61 library_init(NULL, "malloc_speed");
62 atexit(library_deinit);
63
64 print_mallinfo();
65
66 start_timing(&timing);
67
68 for (round = 0; round < ROUNDS; round++)
69 {
70 for (i = 0; i < ALLOCS; i++)
71 {
72 m[i] = malloc(sizes[(round + i) % countof(sizes)]);
73 }
74 for (i = 0; i < ALLOCS; i++)
75 {
76 free(m[i]);
77 }
78 }
79 printf("time for %d malloc/frees, repeating %d rounds: %.4fs\n",
80 ALLOCS, ROUNDS, end_timing(&timing));
81
82 print_mallinfo();
83
84 return 0;
85 }