[libc] Add a definition of pthread_attr_t and its getters and setters.

Not all attributes have been added to phtread_attr_t in this patch. They
will be added gradually in future patches.

Reviewed By: lntue

Differential Revision: https://reviews.llvm.org/D123423

1 files changed, 22 insertions, 0 deletions

diff --git a/libc/src/pthread/pthread_attr_destroy.cpp b/libc/src/pthread/pthread_attr_destroy.cpp
new file mode 100644
index 000000000000..592d002483d8
--- /dev/null
+++ b/libc/src/pthread/pthread_attr_destroy.cpp
@@ -0,0 +1,22 @@
+//===-- Implementation of the pthread_attr_destroy ------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "pthread_attr_destroy.h"
+
+#include "src/__support/common.h"
+
+#include <pthread.h>
+
+namespace __llvm_libc {
+
+LLVM_LIBC_FUNCTION(int, pthread_attr_destroy, (pthread_attr_t * attr)) {
+  // There is nothing to cleanup.
+  return 0;
+}
+
+} // namespace __llvm_libc