lib: Add mlibc

Signed-off-by: Ian Moffett <ian@osmora.org>

1 files changed, 114 insertions, 0 deletions

diff --git a/lib/mlibc/tests/posix/pthread_rwlock.c b/lib/mlibc/tests/posix/pthread_rwlock.c
new file mode 100644
index 0000000..5316372
--- /dev/null
+++ b/lib/mlibc/tests/posix/pthread_rwlock.c
@@ -0,0 +1,114 @@
+#include <assert.h>
+#include <errno.h>
+#include <pthread.h>
+
+static void test_write_lock_unlock() {
+	int res;
+	pthread_rwlock_t rw = PTHREAD_RWLOCK_INITIALIZER;
+	res = pthread_rwlock_wrlock(&rw);
+	assert(!res);
+	res = pthread_rwlock_unlock(&rw);
+	assert(!res);
+}
+
+static void test_read_lock_unlock() {
+	int res;
+	pthread_rwlock_t rw = PTHREAD_RWLOCK_INITIALIZER;
+	res = pthread_rwlock_rdlock(&rw);
+	assert(!res);
+	res = pthread_rwlock_unlock(&rw);
+	assert(!res);
+}
+
+static void test_write_trylock_unlock() {
+	int res;
+	pthread_rwlock_t rw = PTHREAD_RWLOCK_INITIALIZER;
+	res = pthread_rwlock_trywrlock(&rw);
+	assert(!res);
+	res = pthread_rwlock_unlock(&rw);
+	assert(!res);
+}
+
+static void test_read_trylock_unlock() {
+	int res;
+	pthread_rwlock_t rw = PTHREAD_RWLOCK_INITIALIZER;
+	res = pthread_rwlock_tryrdlock(&rw);
+	assert(!res);
+	res = pthread_rwlock_unlock(&rw);
+	assert(!res);
+}
+
+static void test_write_prevents_read() {
+	int res;
+	pthread_rwlock_t rw = PTHREAD_RWLOCK_INITIALIZER;
+	res = pthread_rwlock_wrlock(&rw);
+	assert(!res);
+	res = pthread_rwlock_tryrdlock(&rw);
+	assert(res == EBUSY);
+	res = pthread_rwlock_unlock(&rw);
+	assert(!res);
+}
+
+static void test_write_prevents_write() {
+	int res;
+	pthread_rwlock_t rw = PTHREAD_RWLOCK_INITIALIZER;
+	res = pthread_rwlock_wrlock(&rw);
+	assert(!res);
+	res = pthread_rwlock_trywrlock(&rw);
+	assert(res == EBUSY);
+	res = pthread_rwlock_unlock(&rw);
+	assert(!res);
+}
+
+static void test_read_prevents_write() {
+	int res;
+	pthread_rwlock_t rw = PTHREAD_RWLOCK_INITIALIZER;
+	res = pthread_rwlock_rdlock(&rw);
+	assert(!res);
+	res = pthread_rwlock_trywrlock(&rw);
+	assert(res == EBUSY);
+	res = pthread_rwlock_unlock(&rw);
+	assert(!res);
+}
+
+static void test_read_allows_read() {
+	int res;
+	pthread_rwlock_t rw = PTHREAD_RWLOCK_INITIALIZER;
+	res = pthread_rwlock_rdlock(&rw);
+	assert(!res);
+	res = pthread_rwlock_tryrdlock(&rw);
+	assert(!res);
+	res = pthread_rwlock_unlock(&rw);
+	assert(!res);
+}
+
+static void test_attr() {
+	pthread_rwlockattr_t attr;
+	pthread_rwlockattr_init(&attr);
+
+	int pshared;
+	pthread_rwlockattr_getpshared(&attr, &pshared);
+	assert(pshared == PTHREAD_PROCESS_PRIVATE);
+
+	pthread_rwlockattr_setpshared(&attr, PTHREAD_PROCESS_SHARED);
+	pthread_rwlockattr_getpshared(&attr, &pshared);
+	assert(pshared == PTHREAD_PROCESS_SHARED);
+
+	pthread_rwlockattr_setpshared(&attr, PTHREAD_PROCESS_PRIVATE);
+	pthread_rwlockattr_getpshared(&attr, &pshared);
+	assert(pshared == PTHREAD_PROCESS_PRIVATE);
+
+	pthread_rwlockattr_destroy(&attr);
+}
+
+int main() {
+	test_write_lock_unlock();
+	test_read_lock_unlock();
+	test_write_trylock_unlock();
+	test_read_trylock_unlock();
+	test_write_prevents_read();
+	test_write_prevents_write();
+	test_read_prevents_write();
+	test_read_allows_read();
+	test_attr();
+}