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Annotation of embedaddon/strongswan/scripts/malloc_speed.c, revision 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: }