public Minidump(string crashDump)
{
if (!File.Exists(crashDump))
{
throw new FileNotFoundException(crashDump);
}
_crashDump = crashDump;
FileStream stream = File.Open(crashDump, FileMode.Open, FileAccess.Read, FileShare.Read);
// Load header
MinidumpHeader header = Read <MinidumpHeader>(stream);
if (!header.IsValid)
{
throw new InvalidDataException($"File '{crashDump}' is not a Minidump.");
}
_directories = new MinidumpDirectory[header.NumberOfStreams];
stream.Position = header.StreamDirectoryRva;
if (!Read(stream, _directories))
{
throw new InvalidDataException($"Unable to read directories from minidump '{crashDump} offset 0x{header.StreamDirectoryRva:x}");
}
(int systemInfoIndex, int moduleListIndex) = FindImportantStreams(crashDump);
// Architecture is the first entry in MINIDUMP_SYSTEM_INFO. We need nothing else out of that struct,
// so we only read the first entry.
// https://docs.microsoft.com/en-us/windows/win32/api/minidumpapiset/ns-minidumpapiset-minidump_system_info
Architecture = Read <MinidumpProcessorArchitecture>(stream, _directories[systemInfoIndex].Rva);
// Initialize modules. DataTarget will need a module list immediately, so there's no reason to delay
// filling in the module list.
long rva = _directories[moduleListIndex].Rva;
uint count = Read <uint>(stream, rva);
rva += sizeof(uint);
MinidumpModule[] modules = new MinidumpModule[count];
if (Read(stream, rva, modules))
{
Modules = modules.AsImmutableArray();
}
else
{
Modules = ImmutableArray <MinidumpModule> .Empty;
}
// Read segments async.
_memoryTask = GetMemoryReader();
_threadTask = ReadThreadData(stream);
}
public Minidump(string crashDump, FileStream stream, CacheOptions cacheOptions)
{
if (!File.Exists(crashDump))
{
throw new FileNotFoundException(crashDump);
}
_crashDump = crashDump;
// Load header
MinidumpHeader header = Read <MinidumpHeader>(stream);
if (!header.IsValid)
{
throw new InvalidDataException($"File '{crashDump}' is not a Minidump.");
}
_directories = new MinidumpDirectory[header.NumberOfStreams];
stream.Position = header.StreamDirectoryRva;
if (!Read(stream, _directories))
{
throw new InvalidDataException($"Unable to read directories from minidump '{crashDump} offset 0x{header.StreamDirectoryRva:x}");
}
(int systemInfoIndex, int moduleListIndex) = FindImportantStreams(crashDump);
// Architecture is the first entry in MINIDUMP_SYSTEM_INFO. We need nothing else out of that struct,
// so we only read the first entry.
// https://docs.microsoft.com/en-us/windows/win32/api/minidumpapiset/ns-minidumpapiset-minidump_system_info
Architecture = Read <MinidumpProcessorArchitecture>(stream, _directories[systemInfoIndex].Rva);
// Initialize modules. DataTarget will need a module list immediately, so there's no reason to delay
// filling in the module list.
long rva = _directories[moduleListIndex].Rva;
uint count = Read <uint>(stream, rva);
rva += sizeof(uint);
MinidumpModule[] modules = new MinidumpModule[count];
if (Read(stream, rva, modules))
{
Modules = modules.AsImmutableArray();
}
else
{
Modules = ImmutableArray <MinidumpModule> .Empty;
}
// Read segments async.
//_nativeMemory = new CachedMemoryReader(pointerSize, dumpPath, cacheSize, CacheTechnology.ArrayPool, _segments.ToImmutableArray());
ImmutableArray <MinidumpSegment> segments = GetSegments(stream);
int cacheSize = cacheOptions.MaxDumpCacheSize > int.MaxValue ? int.MaxValue : (int)cacheOptions.MaxDumpCacheSize;
bool isTinyDump = new FileInfo(crashDump).Length <= cacheSize;
if (isTinyDump)
{
_file = MemoryMappedFile.CreateFromFile(stream, null, 0, MemoryMappedFileAccess.Read, HandleInheritability.None, leaveOpen: false);
MemoryMappedViewStream mmStream = _file.CreateViewStream(0, 0, MemoryMappedFileAccess.Read);
MemoryReader = new UncachedMemoryReader(segments, mmStream, PointerSize);
}
else if (cacheSize < CachedMemoryReader.MinimumCacheSize)
{
// this will be very slow
MemoryReader = new UncachedMemoryReader(segments, stream, PointerSize);
}
else
{
CacheTechnology technology = cacheOptions.UseOSMemoryFeatures ? CacheTechnology.AWE : CacheTechnology.ArrayPool;
MemoryReader = new CachedMemoryReader(segments, crashDump, stream, cacheSize, technology, PointerSize);
}
_threadTask = ReadThreadData(stream);
}
