| 1 | //===-- Linux implementation of the mtx_unlock function -------------------===// |
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| 2 | // |
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| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
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| 4 | // See https://llvm.org/LICENSE.txt for license information. |
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| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
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| 6 | // |
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| 7 | //===----------------------------------------------------------------------===// |
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| 8 | |
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| 9 | #include "src/threads/mtx_unlock.h" |
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| 10 | #include "src/__support/common.h" |
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| 11 | #include "src/__support/macros/config.h" |
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| 12 | #include "src/__support/threads/mutex.h" |
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| 13 | |
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| 14 | #include <threads.h> // For mtx_t definition. |
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| 15 | |
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| 16 | namespace LIBC_NAMESPACE_DECL { |
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| 17 | |
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| 18 | // The implementation currently handles only plain mutexes. |
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| 19 | LLVM_LIBC_FUNCTION(int, mtx_unlock, (mtx_t * mutex)) { |
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| 20 | auto *m = reinterpret_cast<Mutex *>(mutex); |
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| 21 | auto err = m->unlock(); |
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| 22 | return err == MutexError::NONE ? thrd_success : thrd_error; |
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| 23 | } |
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| 24 | |
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| 25 | } // namespace LIBC_NAMESPACE_DECL |
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| 26 | |
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