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-rw-r--r--tests/mutex6r.c68
1 files changed, 68 insertions, 0 deletions
diff --git a/tests/mutex6r.c b/tests/mutex6r.c
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+/*
+ * mutex6r.c
+ *
+ * Tests PTHREAD_MUTEX_RECURSIVE mutex type.
+ * Thread locks mutex twice (recursive lock).
+ * Both locks and unlocks should succeed.
+ *
+ * Depends on API functions:
+ * pthread_create()
+ * pthread_join()
+ * pthread_mutexattr_init()
+ * pthread_mutexattr_destroy()
+ * pthread_mutexattr_settype()
+ * pthread_mutexattr_gettype()
+ * pthread_mutex_init()
+ * pthread_mutex_destroy()
+ * pthread_mutex_lock()
+ * pthread_mutex_unlock()
+ */
+
+#include "test.h"
+
+static int lockCount = 0;
+
+static pthread_mutex_t mutex;
+static pthread_mutexattr_t mxAttr;
+
+void * locker(void * arg)
+{
+ assert(pthread_mutex_lock(&mutex) == 0);
+ lockCount++;
+ assert(pthread_mutex_lock(&mutex) == 0);
+ lockCount++;
+ assert(pthread_mutex_unlock(&mutex) == 0);
+ assert(pthread_mutex_unlock(&mutex) == 0);
+
+ return (void *) 555;
+}
+
+int
+main()
+{
+ pthread_t t;
+ int result = 0;
+ int mxType = -1;
+
+ assert(pthread_mutexattr_init(&mxAttr) == 0);
+ assert(pthread_mutexattr_settype(&mxAttr, PTHREAD_MUTEX_RECURSIVE) == 0);
+ assert(pthread_mutexattr_gettype(&mxAttr, &mxType) == 0);
+ assert(mxType == PTHREAD_MUTEX_RECURSIVE);
+
+ assert(pthread_mutex_init(&mutex, &mxAttr) == 0);
+
+ assert(pthread_create(&t, NULL, locker, NULL) == 0);
+
+ assert(pthread_join(t, (void **) &result) == 0);
+ assert(result == 555);
+
+ assert(lockCount == 2);
+
+ assert(pthread_mutex_destroy(&mutex) == 0);
+ assert(pthread_mutexattr_destroy(&mxAttr) == 0);
+
+ exit(0);
+
+ /* Never reached */
+ return 0;
+}