From bd5969fc876a10b18613302db7087ef3c40f18e1 Mon Sep 17 00:00:00 2001
From: Ian Moffett <ian@osmora.org>
Date: Thu, 7 Mar 2024 17:28:00 -0500
Subject: lib: Add mlibc

Signed-off-by: Ian Moffett <ian@osmora.org>
---
 lib/mlibc/tests/posix/pthread_mutex.c | 101 ++++++++++++++++++++++++++++++++++
 1 file changed, 101 insertions(+)
 create mode 100644 lib/mlibc/tests/posix/pthread_mutex.c

(limited to 'lib/mlibc/tests/posix/pthread_mutex.c')

diff --git a/lib/mlibc/tests/posix/pthread_mutex.c b/lib/mlibc/tests/posix/pthread_mutex.c
new file mode 100644
index 0000000..0a9b82f
--- /dev/null
+++ b/lib/mlibc/tests/posix/pthread_mutex.c
@@ -0,0 +1,101 @@
+#include <pthread.h>
+#include <assert.h>
+#include <errno.h>
+
+#define TEST_ATTR(attr, field, value) ({ \
+		int x; \
+		assert(!pthread_mutexattr_set ## field (&(attr), (value))); \
+		assert(!pthread_mutexattr_get ## field (&(attr), &x)); \
+		assert(x == (value)); \
+	})
+
+int variable;
+pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER;
+
+static void *worker(void *arg) {
+	(void)arg;
+	pthread_mutex_lock(&mutex);
+	variable = 1;
+	pthread_mutex_unlock(&mutex);
+	return NULL;
+}
+
+static void testAttr() {
+	pthread_mutexattr_t attr;
+	pthread_mutexattr_init(&attr);
+
+	TEST_ATTR(attr, type, PTHREAD_MUTEX_DEFAULT);
+	TEST_ATTR(attr, type, PTHREAD_MUTEX_NORMAL);
+	TEST_ATTR(attr, type, PTHREAD_MUTEX_ERRORCHECK);
+	TEST_ATTR(attr, type, PTHREAD_MUTEX_RECURSIVE);
+
+	TEST_ATTR(attr, robust, PTHREAD_MUTEX_STALLED);
+	TEST_ATTR(attr, robust, PTHREAD_MUTEX_ROBUST);
+
+	TEST_ATTR(attr, protocol, PTHREAD_PRIO_NONE);
+	TEST_ATTR(attr, protocol, PTHREAD_PRIO_INHERIT);
+	TEST_ATTR(attr, protocol, PTHREAD_PRIO_PROTECT);
+
+	TEST_ATTR(attr, pshared, PTHREAD_PROCESS_PRIVATE);
+	TEST_ATTR(attr, pshared, PTHREAD_PROCESS_SHARED);
+
+	// TODO: sched_get_priority* is unimplemented.
+	// int prio = sched_get_priority_max(SCHED_FIFO);
+	// TEST_ATTR(attr, prioceiling, prio);
+
+	pthread_mutexattr_destroy(&attr);
+}
+
+static void testNormal() {
+	pthread_mutexattr_t attr;
+	pthread_mutexattr_init(&attr);
+	pthread_mutex_init(&mutex, &attr);
+	pthread_mutexattr_destroy(&attr);
+
+	pthread_mutex_lock(&mutex);
+	variable = 0;
+
+	pthread_t thread;
+	int ret = pthread_create(&thread, NULL, &worker, NULL);
+	assert(!ret);
+
+	assert(pthread_mutex_trylock(&mutex) == EBUSY);
+	pthread_mutex_unlock(&mutex);
+
+	ret = pthread_join(thread, NULL);
+	assert(!ret);
+	assert(variable == 1);
+
+	pthread_mutex_destroy(&mutex);
+}
+
+static void testRecursive() {
+	pthread_mutexattr_t attr;
+	pthread_mutexattr_init(&attr);
+	pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_RECURSIVE);
+	pthread_mutex_init(&mutex, &attr);
+	pthread_mutexattr_destroy(&attr);
+
+	pthread_mutex_lock(&mutex);
+	variable = 0;
+
+	pthread_t thread;
+	int ret = pthread_create(&thread, NULL, &worker, NULL);
+	assert(!ret);
+
+	assert(pthread_mutex_trylock(&mutex) == 0);
+	pthread_mutex_unlock(&mutex);
+	pthread_mutex_unlock(&mutex);
+
+	ret = pthread_join(thread, NULL);
+	assert(!ret);
+	assert(variable == 1);
+
+	pthread_mutex_destroy(&mutex);
+}
+
+int main() {
+	testAttr();
+	testNormal();
+	testRecursive();
+}
-- 
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