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//===-- Linux implementation of the mtx_lock function ---------------------===//
//
// 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 "src/threads/mtx_lock.h"
#include "src/__support/common.h"
#include "src/__support/threads/mutex.h"
#include <threads.h> // For mtx_t definition.
namespace __llvm_libc {
// The implementation currently handles only plain mutexes.
LLVM_LIBC_FUNCTION(int, mtx_lock, (mtx_t * mutex)) {
auto *m = reinterpret_cast<Mutex *>(mutex);
auto err = m->lock();
return err == MutexError::NONE ? thrd_success : thrd_error;
}
} // namespace __llvm_libc
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