1//===----------------------------------------------------------------------===//
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 "__cxxabi_config.h"
10#include "cxxabi.h"
11
12// Tell the implementation that we're building the actual implementation
13// (and not testing it)
14#define BUILDING_CXA_GUARD
15#include "cxa_guard_impl.h"
16
17/*
18 This implementation must be careful to not call code external to this file
19 which will turn around and try to call __cxa_guard_acquire reentrantly.
20 For this reason, the headers of this file are as restricted as possible.
21 Previous implementations of this code for __APPLE__ have used
22 std::__libcpp_mutex_lock and the abort_message utility without problem. This
23 implementation also uses std::__libcpp_condvar_wait which has tested
24 to not be a problem.
25*/
26
27namespace __cxxabiv1 {
28
29#if defined(_LIBCXXABI_GUARD_ABI_ARM)
30using guard_type = uint32_t;
31#else
32using guard_type = uint64_t;
33#endif
34
35extern "C"
36{
37_LIBCXXABI_FUNC_VIS int __cxa_guard_acquire(guard_type* raw_guard_object) {
38 SelectedImplementation imp(raw_guard_object);
39 return static_cast<int>(imp.cxa_guard_acquire());
40}
41
42_LIBCXXABI_FUNC_VIS void __cxa_guard_release(guard_type *raw_guard_object) {
43 SelectedImplementation imp(raw_guard_object);
44 imp.cxa_guard_release();
45}
46
47_LIBCXXABI_FUNC_VIS void __cxa_guard_abort(guard_type *raw_guard_object) {
48 SelectedImplementation imp(raw_guard_object);
49 imp.cxa_guard_abort();
50}
51} // extern "C"
52
53} // __cxxabiv1
54