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Annotation of embedaddon/strongswan/scripts/malloc_speed.c, revision 1.1.1.1

1.1       misho       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: }