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Add a semaphore ping benchmark.

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Obtained from:	CheriBSD
MFC after:	2 weeks
Sponsored by:	DARPA, AFRL
This commit is contained in:
trasz 2018-07-04 14:20:19 +00:00
parent 47c25991b6
commit fafaf5a282
1 changed files with 62 additions and 0 deletions
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62
tools/tools/syscall_timing/syscall_timing.c
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@ -29,6 +29,7 @@
* $FreeBSD$ * $FreeBSD$
*/ */
#include <sys/param.h>
#include <sys/types.h> #include <sys/types.h>
#include <sys/mman.h> #include <sys/mman.h>
#include <sys/procdesc.h> #include <sys/procdesc.h>
@ -47,6 +48,7 @@
#ifdef WITH_PTHREAD #ifdef WITH_PTHREAD
#include <pthread.h> #include <pthread.h>
#endif #endif
#include <semaphore.h>
#include <signal.h> #include <signal.h>
#include <stdio.h> #include <stdio.h>
#include <stdlib.h> #include <stdlib.h>
@ -605,6 +607,65 @@ test_select(uintmax_t num, uintmax_t int_arg __unused, const char *path __unused
return (i); return (i);
} }
static uintmax_t
test_semaping(uintmax_t num, uintmax_t int_arg __unused, const char *path __unused)
{
uintmax_t i;
pid_t pid;
sem_t *buf;
int error, j, procfd;
buf = mmap(0, PAGE_SIZE, PROT_READ | PROT_WRITE, MAP_ANON | MAP_SHARED, -1, 0);
if (buf == MAP_FAILED)
err(1, "mmap");
for (j = 0; j < 2; j++) {
error = sem_init(&buf[j], 1, 0);
if (error != 0)
err(1, "sem_init");
}
pid = pdfork(&procfd, 0);
if (pid < 0)
err(1, "pdfork");
if (pid == 0) {
for (;;) {
error = sem_wait(&buf[0]);
if (error != 0)
err(1, "sem_wait");
error = sem_post(&buf[1]);
if (error != 0)
err(1, "sem_post");
}
}
benchmark_start();
BENCHMARK_FOREACH(i, num) {
error = sem_post(&buf[0]);
if (error != 0)
err(1, "sem_post");
error = sem_wait(&buf[1]);
if (error != 0)
err(1, "sem_wait");
}
benchmark_stop();
close(procfd);
for (j = 0; j < 2; j++) {
error = sem_destroy(&buf[j]);
if (error != 0)
err(1, "sem_destroy");
}
error = munmap(buf, PAGE_SIZE);
if (error != 0)
err(1, "munmap");
return (i);
}
static uintmax_t static uintmax_t
test_setuid(uintmax_t num, uintmax_t int_arg __unused, const char *path __unused) test_setuid(uintmax_t num, uintmax_t int_arg __unused, const char *path __unused)
{ {
@ -900,6 +961,7 @@ static const struct test tests[] = {
{ "read_100000", test_read, .t_flags = FLAG_PATH, .t_int = 100000 }, { "read_100000", test_read, .t_flags = FLAG_PATH, .t_int = 100000 },
{ "read_1000000", test_read, .t_flags = FLAG_PATH, .t_int = 1000000 }, { "read_1000000", test_read, .t_flags = FLAG_PATH, .t_int = 1000000 },
{ "select", test_select, .t_flags = 0 }, { "select", test_select, .t_flags = 0 },
{ "semaping", test_semaping, .t_flags = 0 },
{ "setuid", test_setuid, .t_flags = 0 }, { "setuid", test_setuid, .t_flags = 0 },
{ "shmfd", test_shmfd, .t_flags = 0 }, { "shmfd", test_shmfd, .t_flags = 0 },
{ "shmfd_dup", test_shmfd_dup, .t_flags = 0 }, { "shmfd_dup", test_shmfd_dup, .t_flags = 0 },