4 * Userspace RCU library - test program
6 * Copyright February 2009 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
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.
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.
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.
28 #include <sys/types.h>
36 #include <urcu/arch.h>
42 #if defined(_syscall0)
43 _syscall0(pid_t
, gettid
)
44 #elif defined(__NR_gettid)
45 static inline pid_t
gettid(void)
47 return syscall(__NR_gettid
);
50 #warning "use pid as tid"
51 static inline pid_t
gettid(void)
57 #ifndef DYNAMIC_LINK_TEST
60 #define debug_yield_read()
64 static inline void loop_sleep(unsigned long loops
)
73 int main(int argc
, char **argv
)
76 cycles_t time1
, time2
;
77 cycles_t time_tot
= 0;
80 for (i
= 0; i
< TESTS
; i
++) {
81 time1
= caa_get_cycles();
83 time2
= caa_get_cycles();
84 time_tot
+= time2
- time1
;
86 cpl
= ((double)time_tot
) / (double)TESTS
/ (double)LOOPS
;
88 printf("CALIBRATION : %g cycles per loop\n", cpl
);
89 printf("time_tot = %llu, LOOPS = %d, TESTS = %d\n",
90 time_tot
, LOOPS
, TESTS
);
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