b6bc9d72f6
This is step 4 of https://discourse.llvm.org/t/rfc-customizable-namespace-to-allow-testing-the-libc-when-the-system-libc-is-also-llvms-libc/73079
30 lines
972 B
C++
30 lines
972 B
C++
//===-- Implementation of the pthread_mutexattr_setrobust -----------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "pthread_mutexattr_setrobust.h"
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#include "pthread_mutexattr.h"
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#include "src/__support/common.h"
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#include <errno.h>
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#include <pthread.h>
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namespace LIBC_NAMESPACE {
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LLVM_LIBC_FUNCTION(int, pthread_mutexattr_setrobust,
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(pthread_mutexattr_t *__restrict attr, int robust)) {
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if (robust != PTHREAD_MUTEX_STALLED && robust != PTHREAD_MUTEX_ROBUST)
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return EINVAL;
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pthread_mutexattr_t old = *attr;
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old &= ~unsigned(PThreadMutexAttrPos::ROBUST_MASK);
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*attr = old | (robust << unsigned(PThreadMutexAttrPos::ROBUST_SHIFT));
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return 0;
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}
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} // namespace LIBC_NAMESPACE
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