[libc-commits] [libc] [libc] Implement sigtimedwait and sigwaitinfo in signal (PR #238000)

[Michael Jones via libc-commits]

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@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// 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
+//
+//===----------------------------------------------------------------------===//
+///
+/// \file
+/// Linux implementation of sigtimedwait.
+///
+//===----------------------------------------------------------------------===//
+
+#include "src/signal/sigtimedwait.h"
+
+#include "hdr/types/siginfo_t.h"
+#include "hdr/types/sigset_t.h"
+#include "hdr/types/struct_timespec.h"
+#include "src/__support/OSUtil/linux/syscall_wrappers/rt_sigtimedwait.h"
+#include "src/__support/common.h"
+#include "src/__support/libc_errno.h"
+#include "src/__support/macros/config.h"
+
+namespace LIBC_NAMESPACE_DECL {
+
+LLVM_LIBC_FUNCTION(int, sigtimedwait,
+                   (const sigset_t *__restrict set, siginfo_t *__restrict info,
+                    const struct timespec *__restrict timeout)) {
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michaelrj-google wrote:

nit: there should probably be a `LIBC_CRASH_ON_NULLPTR` check for `set`. 

https://github.com/llvm/llvm-project/pull/238000