/// <summary>
/// Force a GC on process processID
/// </summary>
internal static void ForceGC(int processID, TextWriter log = null)
{
// We force a GC by turning on an ETW provider, which needs admin to do.
if (!App.IsElevated)
{
throw new ApplicationException("Must be Administrator (elevated) to use Force GC option.");
}
var arch = GetArchForProcess(processID);
if (log != null)
{
log.WriteLine("Starting Heap dump on Process {0} running architecture {1}.", processID, arch);
}
var heapDumpExe = Path.Combine(SupportFiles.SupportFileDir, arch + @"\HeapDump.exe");
var options = new CommandOptions().AddNoThrow().AddTimeout(1 * 3600 * 1000);
if (log != null)
{
options.AddOutputStream(log);
}
var commandLine = string.Format("\"{0}\" /ForceGC {1}", heapDumpExe, processID.ToString());
log.WriteLine("Exec: {0}", commandLine);
var cmd = Command.Run(commandLine, options);
if (cmd.ExitCode != 0)
{
throw new ApplicationException("HeapDump failed with exit code " + cmd.ExitCode + ". See log for details.");
}
}
private static void DumpGCHeap(string qualifiers, string inputArg, string outputFile, TextWriter log, ProcessorArchitecture arch)
{
var directory = arch == ProcessorArchitecture.X86 ? "x86" : "amd64";
var heapDumpExe = Path.Combine(SupportFiles.SupportFileDir, Path.Combine(directory, "HeapDump.exe"));
var options = new CommandOptions().AddNoThrow().AddTimeout(CommandOptions.Infinite);
if (log != null)
{
options.AddOutputStream(log);
}
// TODO breaking abstraction to know about StackWindow.
options.AddEnvironmentVariable("_NT_SYMBOL_PATH", App.SymbolPath);
log.WriteLine("set _NT_SYMBOL_PATH={0}", App.SymbolPath);
var commandLine = string.Format("\"{0}\" {1} \"{2}\" \"{3}\"", heapDumpExe, qualifiers, inputArg, outputFile);
log.WriteLine("Exec: {0}", commandLine);
PerfViewLogger.Log.TriggerHeapSnapshot(outputFile, inputArg, qualifiers);
var cmd = Command.Run(commandLine, options);
if (cmd.ExitCode != 0)
{
throw new ApplicationException("HeapDump failed with exit code " + cmd.ExitCode);
}
if (log != null)
{
log.WriteLine("Completed Heap Dump for {0} to {1}", inputArg, outputFile);
}
}
