From a9baddd7d07b9fe15e212985a808a79773ec72e4 Mon Sep 17 00:00:00 2001 From: Rich Felker Date: Sat, 19 Mar 2011 22:26:06 -0400 Subject: initial check-in, taken from old libc svn repo with significant additions --- sem.c | 52 ++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 52 insertions(+) create mode 100644 sem.c (limited to 'sem.c') diff --git a/sem.c b/sem.c new file mode 100644 index 0000000..4930e4d --- /dev/null +++ b/sem.c @@ -0,0 +1,52 @@ +#include +#include +#include +#include +#include +#include +#include +#include + +#define TEST(r, f, x, m) ( \ +((r) = (f)) == (x) || \ +(printf(__FILE__ ":%d: %s failed (" m ")\n", __LINE__, #f, r, x), err++, 0) ) + +#define TEST_S(s, x, m) ( \ +!strcmp((s),(x)) || \ +(printf(__FILE__ ":%d: [%s] != [%s] (%s)\n", __LINE__, s, x, m), err++, 0) ) + +int test_sem(void) +{ + int err = 0; + int r; + void *res; + char buf[100]; + struct timespec ts; + sem_t *sem, *sem2; + int val; + + clock_gettime(CLOCK_REALTIME, &ts); + snprintf(buf, sizeof buf, "/testsuite-%d-%d", (int)getpid(), (int)ts.tv_nsec); + + TEST(r, !(sem=sem_open(buf, O_CREAT|O_EXCL, 0700, 1)), 0, "could not open sem"); + + TEST(r, sem_getvalue(sem, &val), 0, "failed to get sem value"); + TEST(r, val, 1, "wrong initial semaphore value"); + + TEST(r, !(sem2=sem_open(buf, 0)), 0, "could not reopen sem"); + TEST(r, sem!=sem2, 0, "reopened sem has different address"); + + TEST(r, sem_wait(sem), 0, "failed on sem wait"); + TEST(r, sem_getvalue(sem2, &val), 0, "failed to get sem value"); + TEST(r, val, 0, "wrong semaphore value on second handle"); + + TEST(r, sem_post(sem), 0, "failed on sem post"); + TEST(r, sem_getvalue(sem2, &val), 0, "failed to get sem value"); + TEST(r, val, 1, "wrong semaphore value on second handle"); + + TEST(r, sem_close(sem), 0, "failed to close sem"); + TEST(r, sem_close(sem), 0, "failed to close sem second time"); + TEST(r, sem_unlink(buf), 0, "failed to unlink sem"); + + return err; +} -- cgit v1.2.1