mirror of
https://github.com/NohamR/Reclass.git
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1d7d384b93
Replace DIA SDK COM-based PDB importer with RawPDB (MolecularMatters) which reads PDB files directly via memory-mapped I/O. Adds File menu "Import PDB..." dialog with type filtering, selection, and progress. - Vendor raw_pdb into third_party/ - Two-phase API: enumeratePdbTypes() + importPdbSelected() - Full recursive import of structs/unions/arrays/pointers/bitfields - PDB import dialog with name filter, select-all, type count - Benchmark: 1654 types from ntkrnlmp.pdb in 16ms - Reorganize import/export files into src/imports/
101 lines
2.5 KiB
C++
101 lines
2.5 KiB
C++
// Copyright 2011-2022, Molecular Matters GmbH <office@molecular-matters.com>
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// See LICENSE.txt for licensing details (2-clause BSD License: https://opensource.org/licenses/BSD-2-Clause)
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#include "Examples_PCH.h"
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#include "ExampleMemoryMappedFile.h"
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MemoryMappedFile::Handle MemoryMappedFile::Open(const char* path)
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{
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#ifdef _WIN32
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void* file = CreateFileA(path, GENERIC_READ, FILE_SHARE_READ, nullptr, OPEN_EXISTING, FILE_ATTRIBUTE_READONLY, nullptr);
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if (file == INVALID_HANDLE_VALUE)
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{
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return Handle { INVALID_HANDLE_VALUE, INVALID_HANDLE_VALUE, nullptr, 0 };
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}
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void* fileMapping = CreateFileMappingW(file, nullptr, PAGE_READONLY, 0, 0, nullptr);
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if (fileMapping == nullptr)
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{
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CloseHandle(file);
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return Handle { INVALID_HANDLE_VALUE, INVALID_HANDLE_VALUE, nullptr, 0 };
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}
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void* baseAddress = MapViewOfFile(fileMapping, FILE_MAP_READ, 0, 0, 0);
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if (baseAddress == nullptr)
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{
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CloseHandle(fileMapping);
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CloseHandle(file);
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return Handle { INVALID_HANDLE_VALUE, INVALID_HANDLE_VALUE, nullptr, 0 };
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}
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BY_HANDLE_FILE_INFORMATION fileInformation;
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const bool getInformationResult = GetFileInformationByHandle(file, &fileInformation);
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if (!getInformationResult)
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{
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UnmapViewOfFile(baseAddress);
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CloseHandle(fileMapping);
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CloseHandle(file);
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return Handle { INVALID_HANDLE_VALUE, INVALID_HANDLE_VALUE, nullptr, 0 };
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}
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const size_t fileSizeHighBytes = static_cast<size_t>(fileInformation.nFileSizeHigh) << 32;
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const size_t fileSizeLowBytes = fileInformation.nFileSizeLow;
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const size_t fileSize = fileSizeHighBytes | fileSizeLowBytes;
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return Handle { file, fileMapping, baseAddress, fileSize };
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#else
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struct stat fileSb;
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int file = open(path, O_RDONLY);
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if (file == INVALID_HANDLE_VALUE)
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{
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return Handle { INVALID_HANDLE_VALUE, nullptr, 0 };
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}
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if (fstat(file, &fileSb) == -1)
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{
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close(file);
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return Handle { INVALID_HANDLE_VALUE, nullptr, 0 };
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}
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void* baseAddress = mmap(nullptr, fileSb.st_size, PROT_READ, MAP_PRIVATE, file, 0);
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if (baseAddress == MAP_FAILED)
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{
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close(file);
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return Handle { INVALID_HANDLE_VALUE, nullptr, 0 };
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}
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return Handle { file, baseAddress, static_cast<size_t>(fileSb.st_size) };
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#endif
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}
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void MemoryMappedFile::Close(Handle& handle)
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{
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#ifdef _WIN32
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UnmapViewOfFile(handle.baseAddress);
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CloseHandle(handle.fileMapping);
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CloseHandle(handle.file);
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handle.file = nullptr;
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handle.fileMapping = nullptr;
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#else
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munmap(handle.baseAddress, handle.len);
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close(handle.file);
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handle.file = 0;
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#endif
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handle.baseAddress = nullptr;
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}
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