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https://github.com/RGBCube/serenity
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d89582880e
MemoryManager cannot use the Singleton class because MemoryManager::initialize is called before the global constructors are run. That caused the Singleton to be re-initialized, causing it to create another MemoryManager instance. Fixes #3226
104 lines
2.8 KiB
C++
104 lines
2.8 KiB
C++
/*
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* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <AK/Assertions.h>
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#include <AK/HashMap.h>
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#include <AK/Singleton.h>
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#include <AK/StringBuilder.h>
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#include <AK/StringView.h>
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#include <Kernel/FileSystem/FileSystem.h>
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#include <Kernel/FileSystem/Inode.h>
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#include <Kernel/Net/LocalSocket.h>
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#include <Kernel/VM/MemoryManager.h>
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#include <LibC/errno_numbers.h>
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namespace Kernel {
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static u32 s_lastFileSystemID;
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static AK::Singleton<HashMap<u32, FS*>> s_fs_map;
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static HashMap<u32, FS*>& all_fses()
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{
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return *s_fs_map;
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}
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FS::FS()
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: m_fsid(++s_lastFileSystemID)
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{
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all_fses().set(m_fsid, this);
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}
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FS::~FS()
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{
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all_fses().remove(m_fsid);
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}
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FS* FS::from_fsid(u32 id)
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{
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auto it = all_fses().find(id);
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if (it != all_fses().end())
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return (*it).value;
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return nullptr;
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}
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FS::DirectoryEntryView::DirectoryEntryView(const StringView& n, InodeIdentifier i, u8 ft)
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: name(n)
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, inode(i)
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, file_type(ft)
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{
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}
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void FS::sync()
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{
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Inode::sync();
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NonnullRefPtrVector<FS, 32> fses;
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{
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InterruptDisabler disabler;
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for (auto& it : all_fses())
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fses.append(*it.value);
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}
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for (auto& fs : fses)
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fs.flush_writes();
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}
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void FS::lock_all()
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{
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for (auto& it : all_fses()) {
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it.value->m_lock.lock();
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}
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}
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void FS::set_block_size(size_t block_size)
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{
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ASSERT(block_size > 0);
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if (block_size == m_block_size)
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return;
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m_block_size = block_size;
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}
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}
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