private void KillToolProcessOnTimeout(Process proc, bool isBeingCancelled)
{
if (!proc.HasExited)
{
if (!isBeingCancelled)
{
ErrorUtilities.VerifyThrow(this.Timeout != -1, "A time-out value must have been specified or the task must be cancelled.");
this.LogShared.LogWarningWithCodeFromResources("Shared.KillingProcess", new object[] { this.Timeout });
}
else
{
this.LogShared.LogWarningWithCodeFromResources("Shared.KillingProcessByCancellation", new object[0]);
}
try
{
NativeMethodsShared.KillTree(proc.Id);
}
catch (InvalidOperationException)
{
}
int milliseconds = 0x1388;
string environmentVariable = Environment.GetEnvironmentVariable("MSBUILDTOOLTASKCANCELPROCESSWAITTIMEOUT");
if (environmentVariable != null)
{
int result = 0;
if (int.TryParse(environmentVariable, out result) && (result >= 0))
{
milliseconds = result;
}
}
proc.WaitForExit(milliseconds);
}
}
public static void KillTree(this Process process, int timeout)
{
if (NativeMethodsShared.IsWindows)
{
try
{
// issue the kill command
NativeMethodsShared.KillTree(process.Id);
}
catch (InvalidOperationException)
{
// The process already exited, which is fine,
// just continue.
}
}
else
{
var children = new HashSet <int>();
GetAllChildIdsUnix(process.Id, children);
foreach (var childId in children)
{
KillProcessUnix(childId);
}
KillProcessUnix(process.Id);
}
// wait until the process finishes exiting/getting killed.
// We don't want to wait forever here because the task is already supposed to be dieing, we just want to give it long enough
// to try and flush what it can and stop. If it cannot do that in a reasonable time frame then we will just ignore it.
process.WaitForExit(timeout);
}