Add pthread_mutex tests

winsup/testsuite/winsup.api/pthread/mutex6e.c

@@ -0,0 +1,70 @@
+/* 
+ * mutex6e.c
+ *
+ * Tests PTHREAD_MUTEX_ERRORCHECK mutex type.
+ * Thread locks mutex twice (recursive lock).
+ * This should fail with an EDEADLK error.
+ * The second unlock attempt should fail with an EPERM error.
+ *
+ * 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) == EDEADLK);
+  lockCount++;
+  assert(pthread_mutex_unlock(&mutex) == 0);
+  assert(pthread_mutex_unlock(&mutex) == EPERM);
+
+  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_ERRORCHECK) == 0);
+  assert(pthread_mutexattr_gettype(&mxAttr, &mxType) == 0);
+  assert(mxType == PTHREAD_MUTEX_ERRORCHECK);
+
+  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;
+}
+