Fix: cast caa_cycles_t to unsigned long long
[urcu.git] / tests / benchmark / test_looplen.c
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1/*
2 * test_looplen.c
3 *
4 * Userspace RCU library - test program
5 *
6982d6d7 6 * Copyright February 2009 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
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7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License along
19 * with this program; if not, write to the Free Software Foundation, Inc.,
20 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
21 */
22
23#define _GNU_SOURCE
24#include <stdio.h>
25#include <pthread.h>
26#include <stdlib.h>
27#include <string.h>
28#include <sys/types.h>
29#include <sys/wait.h>
30#include <unistd.h>
31#include <stdio.h>
32#include <assert.h>
fd6a23f2 33#include <sched.h>
94b343fd 34#include <errno.h>
fd6a23f2 35
ec4e58a3 36#include <urcu/arch.h>
fd6a23f2 37
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38#ifndef DYNAMIC_LINK_TEST
39#define _LGPL_SOURCE
40#else
41#define debug_yield_read()
42#endif
ec4e58a3 43#include <urcu.h>
fd6a23f2 44
ab0aacbe 45static inline void loop_sleep(unsigned long loops)
fd6a23f2 46{
ab0aacbe 47 while (loops-- != 0)
06f22bdb 48 caa_cpu_relax();
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49}
50
51#define LOOPS 1048576
52#define TESTS 10
53
54int main(int argc, char **argv)
55{
56 unsigned long i;
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57 caa_cycles_t time1, time2;
58 caa_cycles_t time_tot = 0;
85d2a666 59 double cpl;
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60
61 for (i = 0; i < TESTS; i++) {
06f22bdb 62 time1 = caa_get_cycles();
fd6a23f2 63 loop_sleep(LOOPS);
06f22bdb 64 time2 = caa_get_cycles();
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65 time_tot += time2 - time1;
66 }
85d2a666 67 cpl = ((double)time_tot) / (double)TESTS / (double)LOOPS;
fd6a23f2 68
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69 printf("CALIBRATION : %g cycles per loop\n", cpl);
70 printf("time_tot = %llu, LOOPS = %d, TESTS = %d\n",
9ee07024 71 (unsigned long long) time_tot, LOOPS, TESTS);
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72
73 return 0;
74}
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