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Refactor map/mman for multi-mmap design. #847

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Merged
evoskuil merged 1 commit into from
Jul 1, 2026
Merged

Refactor map/mman for multi-mmap design. #847

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11 changes: 7 additions & 4 deletions Makefile.am
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Original file line number Diff line number Diff line change
Expand Up @@ -43,10 +43,8 @@ src_libbitcoin_database_la_SOURCES = \
src/locks/file_lock.cpp \
src/locks/flush_lock.cpp \
src/locks/interprocess_lock.cpp \
src/memory/map.cpp \
src/memory/mman.cpp \
src/memory/utilities.cpp \
src/memory/mman-win32/mman.cpp \
src/memory/mman-win32/mman.hpp \
src/types/history.cpp \
src/types/multisig_view.cpp \
src/types/unspent.cpp
Expand Down Expand Up @@ -208,7 +206,11 @@ include_bitcoin_database_file_HEADERS = \

include_bitcoin_database_impl_memorydir = ${includedir}/bitcoin/database/impl/memory
include_bitcoin_database_impl_memory_HEADERS = \
include/bitcoin/database/impl/memory/accessor.ipp
include/bitcoin/database/impl/memory/accessor.ipp \
include/bitcoin/database/impl/memory/map.ipp \
include/bitcoin/database/impl/memory/map_dispatch.ipp \
include/bitcoin/database/impl/memory/map_private.ipp \
include/bitcoin/database/impl/memory/map_storage.ipp

include_bitcoin_database_impl_primitivesdir = ${includedir}/bitcoin/database/impl/primitives
include_bitcoin_database_impl_primitives_HEADERS = \
Expand Down Expand Up @@ -314,6 +316,7 @@ include_bitcoin_database_memory_HEADERS = \
include/bitcoin/database/memory/map.hpp \
include/bitcoin/database/memory/maps.hpp \
include/bitcoin/database/memory/memory.hpp \
include/bitcoin/database/memory/mman.hpp \
include/bitcoin/database/memory/reader.hpp \
include/bitcoin/database/memory/streamers.hpp \
include/bitcoin/database/memory/utilities.hpp
Expand Down
9 changes: 6 additions & 3 deletions builds/msvc/vs2022/libbitcoin-database/libbitcoin-database.vcxproj
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Original file line number Diff line number Diff line change
Expand Up @@ -130,8 +130,7 @@
<ClCompile Include="..\..\..\..\src\locks\file_lock.cpp" />
<ClCompile Include="..\..\..\..\src\locks\flush_lock.cpp" />
<ClCompile Include="..\..\..\..\src\locks\interprocess_lock.cpp" />
<ClCompile Include="..\..\..\..\src\memory\map.cpp" />
<ClCompile Include="..\..\..\..\src\memory\mman-win32\mman.cpp" />
<ClCompile Include="..\..\..\..\src\memory\mman.cpp" />
<ClCompile Include="..\..\..\..\src\memory\utilities.cpp">
<ObjectFileName>$(IntDir)src_memory_utilities.obj</ObjectFileName>
</ClCompile>
Expand Down Expand Up @@ -159,6 +158,7 @@
<ClInclude Include="..\..\..\..\include\bitcoin\database\memory\map.hpp" />
<ClInclude Include="..\..\..\..\include\bitcoin\database\memory\maps.hpp" />
<ClInclude Include="..\..\..\..\include\bitcoin\database\memory\memory.hpp" />
<ClInclude Include="..\..\..\..\include\bitcoin\database\memory\mman.hpp" />
<ClInclude Include="..\..\..\..\include\bitcoin\database\memory\reader.hpp" />
<ClInclude Include="..\..\..\..\include\bitcoin\database\memory\streamers.hpp" />
<ClInclude Include="..\..\..\..\include\bitcoin\database\memory\utilities.hpp" />
Expand Down Expand Up @@ -219,10 +219,13 @@
<ClInclude Include="..\..\..\..\include\bitcoin\database\types\types.hpp" />
<ClInclude Include="..\..\..\..\include\bitcoin\database\types\unspent.hpp" />
<ClInclude Include="..\..\..\..\include\bitcoin\database\version.hpp" />
<ClInclude Include="..\..\..\..\src\memory\mman-win32\mman.hpp" />
</ItemGroup>
<ItemGroup>
<None Include="..\..\..\..\include\bitcoin\database\impl\memory\accessor.ipp" />
<None Include="..\..\..\..\include\bitcoin\database\impl\memory\map.ipp" />
<None Include="..\..\..\..\include\bitcoin\database\impl\memory\map_dispatch.ipp" />
<None Include="..\..\..\..\include\bitcoin\database\impl\memory\map_private.ipp" />
<None Include="..\..\..\..\include\bitcoin\database\impl\memory\map_storage.ipp" />
<None Include="..\..\..\..\include\bitcoin\database\impl\primitives\arrayhead.ipp" />
<None Include="..\..\..\..\include\bitcoin\database\impl\primitives\arraymap.ipp" />
<None Include="..\..\..\..\include\bitcoin\database\impl\primitives\hashhead.ipp" />
Expand Down
28 changes: 17 additions & 11 deletions builds/msvc/vs2022/libbitcoin-database/libbitcoin-database.vcxproj.filters
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Original file line number Diff line number Diff line change
Expand Up @@ -91,11 +91,8 @@
<Filter Include="src\memory">
<UniqueIdentifier>{62D7FBEE-4D52-424A-0000-0000000000B1}</UniqueIdentifier>
</Filter>
<Filter Include="src\memory\mman-win32">
<UniqueIdentifier>{62D7FBEE-4D52-424A-0000-0000000000C1}</UniqueIdentifier>
</Filter>
<Filter Include="src\types">
<UniqueIdentifier>{62D7FBEE-4D52-424A-0000-0000000000D1}</UniqueIdentifier>
<UniqueIdentifier>{62D7FBEE-4D52-424A-0000-0000000000C1}</UniqueIdentifier>
</Filter>
</ItemGroup>
<ItemGroup>
Expand All @@ -120,12 +117,9 @@
<ClCompile Include="..\..\..\..\src\locks\interprocess_lock.cpp">
<Filter>src\locks</Filter>
</ClCompile>
<ClCompile Include="..\..\..\..\src\memory\map.cpp">
<ClCompile Include="..\..\..\..\src\memory\mman.cpp">
<Filter>src\memory</Filter>
</ClCompile>
<ClCompile Include="..\..\..\..\src\memory\mman-win32\mman.cpp">
<Filter>src\memory\mman-win32</Filter>
</ClCompile>
<ClCompile Include="..\..\..\..\src\memory\utilities.cpp">
<Filter>src\memory</Filter>
</ClCompile>
Expand Down Expand Up @@ -197,6 +191,9 @@
<ClInclude Include="..\..\..\..\include\bitcoin\database\memory\memory.hpp">
<Filter>include\bitcoin\database\memory</Filter>
</ClInclude>
<ClInclude Include="..\..\..\..\include\bitcoin\database\memory\mman.hpp">
<Filter>include\bitcoin\database\memory</Filter>
</ClInclude>
<ClInclude Include="..\..\..\..\include\bitcoin\database\memory\reader.hpp">
<Filter>include\bitcoin\database\memory</Filter>
</ClInclude>
Expand Down Expand Up @@ -377,14 +374,23 @@
<ClInclude Include="..\..\..\..\include\bitcoin\database\version.hpp">
<Filter>include\bitcoin\database</Filter>
</ClInclude>
<ClInclude Include="..\..\..\..\src\memory\mman-win32\mman.hpp">
<Filter>src\memory\mman-win32</Filter>
</ClInclude>
</ItemGroup>
<ItemGroup>
<None Include="..\..\..\..\include\bitcoin\database\impl\memory\accessor.ipp">
<Filter>include\bitcoin\database\impl\memory</Filter>
</None>
<None Include="..\..\..\..\include\bitcoin\database\impl\memory\map.ipp">
<Filter>include\bitcoin\database\impl\memory</Filter>
</None>
<None Include="..\..\..\..\include\bitcoin\database\impl\memory\map_dispatch.ipp">
<Filter>include\bitcoin\database\impl\memory</Filter>
</None>
<None Include="..\..\..\..\include\bitcoin\database\impl\memory\map_private.ipp">
<Filter>include\bitcoin\database\impl\memory</Filter>
</None>
<None Include="..\..\..\..\include\bitcoin\database\impl\memory\map_storage.ipp">
<Filter>include\bitcoin\database\impl\memory</Filter>
</None>
<None Include="..\..\..\..\include\bitcoin\database\impl\primitives\arrayhead.ipp">
<Filter>include\bitcoin\database\impl\primitives</Filter>
</None>
Expand Down
9 changes: 6 additions & 3 deletions builds/msvc/vs2026/libbitcoin-database/libbitcoin-database.vcxproj
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Original file line number Diff line number Diff line change
Expand Up @@ -130,8 +130,7 @@
<ClCompile Include="..\..\..\..\src\locks\file_lock.cpp" />
<ClCompile Include="..\..\..\..\src\locks\flush_lock.cpp" />
<ClCompile Include="..\..\..\..\src\locks\interprocess_lock.cpp" />
<ClCompile Include="..\..\..\..\src\memory\map.cpp" />
<ClCompile Include="..\..\..\..\src\memory\mman-win32\mman.cpp" />
<ClCompile Include="..\..\..\..\src\memory\mman.cpp" />
<ClCompile Include="..\..\..\..\src\memory\utilities.cpp">
<ObjectFileName>$(IntDir)src_memory_utilities.obj</ObjectFileName>
</ClCompile>
Expand Down Expand Up @@ -159,6 +158,7 @@
<ClInclude Include="..\..\..\..\include\bitcoin\database\memory\map.hpp" />
<ClInclude Include="..\..\..\..\include\bitcoin\database\memory\maps.hpp" />
<ClInclude Include="..\..\..\..\include\bitcoin\database\memory\memory.hpp" />
<ClInclude Include="..\..\..\..\include\bitcoin\database\memory\mman.hpp" />
<ClInclude Include="..\..\..\..\include\bitcoin\database\memory\reader.hpp" />
<ClInclude Include="..\..\..\..\include\bitcoin\database\memory\streamers.hpp" />
<ClInclude Include="..\..\..\..\include\bitcoin\database\memory\utilities.hpp" />
Expand Down Expand Up @@ -219,10 +219,13 @@
<ClInclude Include="..\..\..\..\include\bitcoin\database\types\types.hpp" />
<ClInclude Include="..\..\..\..\include\bitcoin\database\types\unspent.hpp" />
<ClInclude Include="..\..\..\..\include\bitcoin\database\version.hpp" />
<ClInclude Include="..\..\..\..\src\memory\mman-win32\mman.hpp" />
</ItemGroup>
<ItemGroup>
<None Include="..\..\..\..\include\bitcoin\database\impl\memory\accessor.ipp" />
<None Include="..\..\..\..\include\bitcoin\database\impl\memory\map.ipp" />
<None Include="..\..\..\..\include\bitcoin\database\impl\memory\map_dispatch.ipp" />
<None Include="..\..\..\..\include\bitcoin\database\impl\memory\map_private.ipp" />
<None Include="..\..\..\..\include\bitcoin\database\impl\memory\map_storage.ipp" />
<None Include="..\..\..\..\include\bitcoin\database\impl\primitives\arrayhead.ipp" />
<None Include="..\..\..\..\include\bitcoin\database\impl\primitives\arraymap.ipp" />
<None Include="..\..\..\..\include\bitcoin\database\impl\primitives\hashhead.ipp" />
Expand Down
28 changes: 17 additions & 11 deletions builds/msvc/vs2026/libbitcoin-database/libbitcoin-database.vcxproj.filters
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Original file line number Diff line number Diff line change
Expand Up @@ -91,11 +91,8 @@
<Filter Include="src\memory">
<UniqueIdentifier>{62D7FBEE-4D52-424A-0000-0000000000B1}</UniqueIdentifier>
</Filter>
<Filter Include="src\memory\mman-win32">
<UniqueIdentifier>{62D7FBEE-4D52-424A-0000-0000000000C1}</UniqueIdentifier>
</Filter>
<Filter Include="src\types">
<UniqueIdentifier>{62D7FBEE-4D52-424A-0000-0000000000D1}</UniqueIdentifier>
<UniqueIdentifier>{62D7FBEE-4D52-424A-0000-0000000000C1}</UniqueIdentifier>
</Filter>
</ItemGroup>
<ItemGroup>
Expand All @@ -120,12 +117,9 @@
<ClCompile Include="..\..\..\..\src\locks\interprocess_lock.cpp">
<Filter>src\locks</Filter>
</ClCompile>
<ClCompile Include="..\..\..\..\src\memory\map.cpp">
<ClCompile Include="..\..\..\..\src\memory\mman.cpp">
<Filter>src\memory</Filter>
</ClCompile>
<ClCompile Include="..\..\..\..\src\memory\mman-win32\mman.cpp">
<Filter>src\memory\mman-win32</Filter>
</ClCompile>
<ClCompile Include="..\..\..\..\src\memory\utilities.cpp">
<Filter>src\memory</Filter>
</ClCompile>
Expand Down Expand Up @@ -197,6 +191,9 @@
<ClInclude Include="..\..\..\..\include\bitcoin\database\memory\memory.hpp">
<Filter>include\bitcoin\database\memory</Filter>
</ClInclude>
<ClInclude Include="..\..\..\..\include\bitcoin\database\memory\mman.hpp">
<Filter>include\bitcoin\database\memory</Filter>
</ClInclude>
<ClInclude Include="..\..\..\..\include\bitcoin\database\memory\reader.hpp">
<Filter>include\bitcoin\database\memory</Filter>
</ClInclude>
Expand Down Expand Up @@ -377,14 +374,23 @@
<ClInclude Include="..\..\..\..\include\bitcoin\database\version.hpp">
<Filter>include\bitcoin\database</Filter>
</ClInclude>
<ClInclude Include="..\..\..\..\src\memory\mman-win32\mman.hpp">
<Filter>src\memory\mman-win32</Filter>
</ClInclude>
</ItemGroup>
<ItemGroup>
<None Include="..\..\..\..\include\bitcoin\database\impl\memory\accessor.ipp">
<Filter>include\bitcoin\database\impl\memory</Filter>
</None>
<None Include="..\..\..\..\include\bitcoin\database\impl\memory\map.ipp">
<Filter>include\bitcoin\database\impl\memory</Filter>
</None>
<None Include="..\..\..\..\include\bitcoin\database\impl\memory\map_dispatch.ipp">
<Filter>include\bitcoin\database\impl\memory</Filter>
</None>
<None Include="..\..\..\..\include\bitcoin\database\impl\memory\map_private.ipp">
<Filter>include\bitcoin\database\impl\memory</Filter>
</None>
<None Include="..\..\..\..\include\bitcoin\database\impl\memory\map_storage.ipp">
<Filter>include\bitcoin\database\impl\memory</Filter>
</None>
<None Include="..\..\..\..\include\bitcoin\database\impl\primitives\arrayhead.ipp">
<Filter>include\bitcoin\database\impl\primitives</Filter>
</None>
Expand Down
1 change: 1 addition & 0 deletions include/bitcoin/database.hpp
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Original file line number Diff line number Diff line change
Expand Up @@ -34,6 +34,7 @@
#include <bitcoin/database/memory/map.hpp>
#include <bitcoin/database/memory/maps.hpp>
#include <bitcoin/database/memory/memory.hpp>
#include <bitcoin/database/memory/mman.hpp>
#include <bitcoin/database/memory/reader.hpp>
#include <bitcoin/database/memory/streamers.hpp>
#include <bitcoin/database/memory/utilities.hpp>
Expand Down
130 changes: 130 additions & 0 deletions include/bitcoin/database/impl/memory/map.ipp
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@@ -0,0 +1,130 @@
/**
* Copyright (c) 2011-2026 libbitcoin developers (see AUTHORS)
*
* This file is part of libbitcoin.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef LIBBITCOIN_DATABASE_MEMORY_MAP_IPP
#define LIBBITCOIN_DATABASE_MEMORY_MAP_IPP

#include <algorithm>
#include <filesystem>
#include <shared_mutex>
#include <bitcoin/database/define.hpp>
#include <bitcoin/database/file/file.hpp>

namespace libbitcoin {
namespace database {

// Constructors.
// ----------------------------------------------------------------------------

TEMPLATE
CLASS::map1(const path& filename, size_t minimum, size_t expansion,
bool random) NOEXCEPT
requires (columns == one)
: filenames_{ filename },
minimum_(minimum),
expansion_(expansion),
random_(random),
opened_{ file::invalid }
{
}

TEMPLATE
CLASS::map1(const paths& filenames, size_t minimum, size_t expansion,
bool random) NOEXCEPT
requires (columns > one)
: filenames_(filenames),
minimum_(minimum),
expansion_(expansion),
random_(random),
opened_{}
{
opened_.fill(file::invalid);
}

TEMPLATE
CLASS::~map1() NOEXCEPT
{
BC_ASSERT_MSG(!loaded_, "...");
BC_ASSERT_MSG(is_zero(logical_), "...");

BC_ASSERT_MSG(std::ranges::all_of(memory_map_,
[](auto map) NOEXCEPT { return is_null(map); }), "...");

BC_ASSERT_MSG(std::ranges::all_of(capacity_,
[](auto closed) NOEXCEPT { return is_zero(closed); }), "...");

BC_ASSERT_MSG(std::ranges::all_of(opened_,
[](auto opened) NOEXCEPT { return opened == file::invalid; }), "...");
}

TEMPLATE
bool CLASS::is_open() const NOEXCEPT
{
std::shared_lock field_lock(field_mutex_);
return std::ranges::any_of(opened_, [](auto opened) NOEXCEPT
{
return opened != file::invalid;
});
}

TEMPLATE
bool CLASS::is_loaded() const NOEXCEPT
{
std::shared_lock field_lock(field_mutex_);
return loaded_;
}

// protected
// ----------------------------------------------------------------------------

TEMPLATE
size_t CLASS::to_capacity(size_t required) const NOEXCEPT
{
BC_PUSH_WARNING(NO_STATIC_CAST)
const auto resize = required * ((expansion_ + 100.0) / 100.0);
const auto target = std::max(minimum_, static_cast<size_t>(resize));
BC_POP_WARNING()

BC_ASSERT(target >= required);
return target;
}

// Read-write protected by atomic, write-write protected by remap_mutex.
TEMPLATE
void CLASS::set_first_code(const error::error_t& ec) NOEXCEPT
{
if (!fault_)
{
// fault is not exposed so requires no atomic (fast read).
fault_ = true;

// error is atomic for public read exposure.
error_.store(ec);
}
}

TEMPLATE
void CLASS::set_disk_space(size_t required) NOEXCEPT
{
space_.store(required);
}

} // namespace database
} // namespace libbitcoin

#endif
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