| 1 | //===-- Linux implementation of the mtx_lock function ---------------------===// |
|---|---|
| 2 | // |
| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| 4 | // See https://llvm.org/LICENSE.txt for license information. |
| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| 6 | // |
| 7 | //===----------------------------------------------------------------------===// |
| 8 | |
| 9 | #include "src/threads/mtx_lock.h" |
| 10 | #include "src/__support/common.h" |
| 11 | #include "src/__support/threads/mutex.h" |
| 12 | |
| 13 | #include <threads.h> // For mtx_t definition. |
| 14 | |
| 15 | namespace LIBC_NAMESPACE { |
| 16 | |
| 17 | // The implementation currently handles only plain mutexes. |
| 18 | LLVM_LIBC_FUNCTION(int, mtx_lock, (mtx_t * mutex)) { |
| 19 | auto *m = reinterpret_cast<Mutex *>(mutex); |
| 20 | auto err = m->lock(); |
| 21 | return err == MutexError::NONE ? thrd_success : thrd_error; |
| 22 | } |
| 23 | |
| 24 | } // namespace LIBC_NAMESPACE |
| 25 |