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: }
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