blob: fd87e731123674755a8460c8f25587aa37f84779 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
|
// This file is part of AsmJit project <https://asmjit.com>
//
// See asmjit.h or LICENSE.md for license and copyright information
// SPDX-License-Identifier: Zlib
#ifndef ASMJIT_CORE_OSUTILS_P_H_INCLUDED
#define ASMJIT_CORE_OSUTILS_P_H_INCLUDED
#include "../core/osutils.h"
ASMJIT_BEGIN_NAMESPACE
//! \cond INTERNAL
//! \addtogroup asmjit_utilities
//! \{
#if defined(_WIN32)
// Windows implementation.
static_assert(sizeof(Lock::Handle) == sizeof(CRITICAL_SECTION), "asmjit::Lock::Handle layout must match CRITICAL_SECTION");
static_assert(alignof(Lock::Handle) == alignof(CRITICAL_SECTION), "asmjit::Lock::Handle alignment must match CRITICAL_SECTION");
ASMJIT_FORCE_INLINE Lock::Lock() noexcept { InitializeCriticalSection(reinterpret_cast<CRITICAL_SECTION*>(&_handle)); }
ASMJIT_FORCE_INLINE Lock::~Lock() noexcept { DeleteCriticalSection(reinterpret_cast<CRITICAL_SECTION*>(&_handle)); }
ASMJIT_FORCE_INLINE void Lock::lock() noexcept { EnterCriticalSection(reinterpret_cast<CRITICAL_SECTION*>(&_handle)); }
ASMJIT_FORCE_INLINE void Lock::unlock() noexcept { LeaveCriticalSection(reinterpret_cast<CRITICAL_SECTION*>(&_handle)); }
#elif !defined(__EMSCRIPTEN__)
// PThread implementation.
#ifdef PTHREAD_MUTEX_INITIALIZER
ASMJIT_FORCE_INLINE Lock::Lock() noexcept : _handle(PTHREAD_MUTEX_INITIALIZER) {}
#else
ASMJIT_FORCE_INLINE Lock::Lock() noexcept { pthread_mutex_init(&_handle, nullptr); }
#endif
ASMJIT_FORCE_INLINE Lock::~Lock() noexcept { pthread_mutex_destroy(&_handle); }
ASMJIT_FORCE_INLINE void Lock::lock() noexcept { pthread_mutex_lock(&_handle); }
ASMJIT_FORCE_INLINE void Lock::unlock() noexcept { pthread_mutex_unlock(&_handle); }
#else
// Dummy implementation - Emscripten or other unsupported platform.
ASMJIT_FORCE_INLINE Lock::Lock() noexcept {}
ASMJIT_FORCE_INLINE Lock::~Lock() noexcept {}
ASMJIT_FORCE_INLINE void Lock::lock() noexcept {}
ASMJIT_FORCE_INLINE void Lock::unlock() noexcept {}
#endif
//! Scoped lock.
class LockGuard {
public:
ASMJIT_NONCOPYABLE(LockGuard)
Lock& _target;
inline LockGuard(Lock& target) noexcept
: _target(target) { _target.lock(); }
inline ~LockGuard() noexcept { _target.unlock(); }
};
//! \}
//! \endcond
ASMJIT_END_NAMESPACE
#endif // ASMJIT_CORE_OSUTILS_P_H_INCLUDED
|
