mirror of
https://github.com/LadybirdBrowser/ladybird
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125b399a72
This commit removes any use of pthread.h from the RWLock header. It also adds a win32 implementation of RWLock. Support for interprocess RWLocks is left to a later PR. Due to the API design of SRWLock the unlock methods must match the lock method.
66 lines
1.1 KiB
C++
66 lines
1.1 KiB
C++
/*
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* Copyright (c) 2025, Ryszard Goc <ryszardgoc@gmail.com>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <AK/Assertions.h>
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#include <AK/Concepts.h>
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#include <AK/Error.h>
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#include <AK/Format.h>
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#include <AK/Windows.h>
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#include <LibSync/Export.h>
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#include <LibSync/RWLock.h>
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namespace Sync {
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namespace {
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ALWAYS_INLINE PSRWLOCK to_impl(void* ptr)
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{
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return reinterpret_cast<PSRWLOCK>(ptr);
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}
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}
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RWLock::RWLock()
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{
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static_assert(sizeof(SRWLOCK) == sizeof(m_storage));
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PSRWLOCK rwlock_ptr = new (m_storage) SRWLOCK;
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InitializeSRWLock(rwlock_ptr);
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}
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RWLock::~RWLock() = default;
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bool RWLock::try_lock_read()
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{
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return TryAcquireSRWLockShared(to_impl(m_storage));
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}
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bool RWLock::try_lock_write()
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{
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return TryAcquireSRWLockExclusive(to_impl(m_storage));
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}
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void RWLock::lock_read()
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{
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AcquireSRWLockShared(to_impl(m_storage));
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}
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void RWLock::lock_write()
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{
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AcquireSRWLockExclusive(to_impl(m_storage));
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}
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void RWLock::unlock_read()
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{
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ReleaseSRWLockShared(to_impl(m_storage));
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}
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void RWLock::unlock_write()
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{
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ReleaseSRWLockExclusive(to_impl(m_storage));
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}
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}
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