public void Dump(int pid, DumpType dumpType, string fileName, string dumpComment = null)
{
_pid = pid;
_dumpType = dumpType;
dumpComment = dumpComment ?? ("DumpWriter: " + _dumpType.ToString());
IntPtr hProcess = DumpNativeMethods.OpenProcess(
ProcessAccessFlags.QueryInformation | ProcessAccessFlags.VirtualMemoryRead | ProcessAccessFlags.DuplicateHandle,
false,
(uint)_pid
);
if (hProcess == IntPtr.Zero)
{
throw new ArgumentException(String.Format("Unable to open process {0}, error {x:8}", _pid, Marshal.GetLastWin32Error()));
}
FileStream dumpFileStream = new FileStream(fileName, FileMode.Create);
var exceptionParam = new MINIDUMP_EXCEPTION_INFORMATION();
var userStreamParam = PrepareUserStream(dumpComment);
var callbackParam = new MINIDUMP_CALLBACK_INFORMATION();
if (_dumpType == DumpType.FullMemoryExcludingSafeRegions ||
_dumpType == DumpType.MinimalWithFullCLRHeap)
{
callbackParam.CallbackRoutine = CallbackRoutine;
}
MINIDUMP_TYPE nativeDumpType =
(_dumpType == DumpType.FullMemory || _dumpType == DumpType.FullMemoryExcludingSafeRegions) ?
MINIDUMP_TYPE.MiniDumpWithFullMemory | MINIDUMP_TYPE.MiniDumpWithHandleData | MINIDUMP_TYPE.MiniDumpWithFullMemoryInfo :
MINIDUMP_TYPE.MiniDumpWithHandleData | MINIDUMP_TYPE.MiniDumpWithFullMemoryInfo;
bool success = DumpNativeMethods.MiniDumpWriteDump(
hProcess,
(uint)_pid,
dumpFileStream.SafeFileHandle.DangerousGetHandle(),
nativeDumpType,
ref exceptionParam,
ref userStreamParam,
ref callbackParam
);
if (!success)
{
throw new ApplicationException(String.Format("Error writing dump, error {0:x8}", Marshal.GetLastWin32Error()));
}
userStreamParam.Delete();
DumpNativeMethods.CloseHandle(hProcess);
dumpFileStream.Close();
}
public void Dump(int pid, DumpType dumpType, IntPtr exceptionParam,
string fileName, bool writeAsync = false, string dumpComment = null)
{
_pid = pid;
_dumpType = dumpType;
_spillSegmentsAsynchronously = writeAsync;
dumpComment = dumpComment ?? ("DumpWriter: " + _dumpType.ToString());
IntPtr hProcess = DumpNativeMethods.OpenProcess(
ProcessAccessFlags.QueryInformation | ProcessAccessFlags.VirtualMemoryRead | ProcessAccessFlags.DuplicateHandle,
false,
(uint)_pid
);
if (hProcess == IntPtr.Zero)
{
throw new ArgumentException(String.Format("Unable to open process {0}, error {1:x8}", _pid, Marshal.GetLastWin32Error()));
}
_dumpFileStream = new FileStream(fileName, FileMode.Create);
var userStreamParam = PrepareUserStream(dumpComment);
var callbackParam = new MINIDUMP_CALLBACK_INFORMATION();
_needMemoryCallbacks = (
_dumpType == DumpType.FullMemoryExcludingSafeRegions ||
_dumpType == DumpType.MinimalWithFullCLRHeap
);
if (_needMemoryCallbacks || _spillSegmentsAsynchronously)
{
callbackParam.CallbackRoutine = CallbackRoutine;
}
MINIDUMP_TYPE nativeDumpType =
(_dumpType == DumpType.FullMemory || _dumpType == DumpType.FullMemoryExcludingSafeRegions) ?
MINIDUMP_TYPE.MiniDumpWithFullMemory | MINIDUMP_TYPE.MiniDumpWithHandleData | MINIDUMP_TYPE.MiniDumpWithFullMemoryInfo :
MINIDUMP_TYPE.MiniDumpWithHandleData | MINIDUMP_TYPE.MiniDumpWithFullMemoryInfo;
Stopwatch sw = Stopwatch.StartNew();
bool success = DumpNativeMethods.MiniDumpWriteDump(
hProcess,
(uint)_pid,
_dumpFileStream.SafeFileHandle.DangerousGetHandle(),
nativeDumpType,
exceptionParam,
ref userStreamParam,
ref callbackParam);
if (!success)
{
throw new ApplicationException(string.Format("Error writing dump, error: {0}", Marshal.GetExceptionForHR(
Marshal.GetHRForLastWin32Error())));
}
_logger.WriteLine("Process was suspended for {0:N2}ms", sw.Elapsed.TotalMilliseconds);
if (_spillSegmentsAsynchronously)
{
// We are asynchronously spilling dump segments to disk, need to wait
// for this process to complete before returning to the caller.
_segmentSpillingTask.Wait();
_logger.WriteLine(
"Total dump writing time including async flush was {0:N2}ms",
sw.Elapsed.TotalMilliseconds);
}
userStreamParam.Delete();
DumpNativeMethods.CloseHandle(hProcess);
_dumpFileStream.Close();
}
