public static Process SpawnOndemandChild(string socketFile)
{
CompatArraySegment <byte>?torelease = null;
try {
Logger.Write(LogLevel.Debug, "Spawning via the shim {0}", socketFile);
var client = new UnixClient();
client.Connect(socketFile);
CompatArraySegment <byte> buffer = buffers.ClaimBuffer();
torelease = buffer;
int receivedCount;
using (NetworkStream socket = client.GetStream()) {
socket.Write(spawnString, 0, spawnString.Length);
receivedCount = socket.Read(buffer.Array, buffer.Offset, buffer.Count);
if (receivedCount < 0)
{
throw new Exception("Didn't receive the child pid");
}
}
string received = Encoding.UTF8.GetString(buffer.Array, buffer.Offset, receivedCount);
string clean = received.Trim();
int pid;
if (!Int32.TryParse(clean, out pid))
{
throw new Exception("Couldn't parse the pid \"" + clean + "\"");
}
if (pid < 0)
{
throw new Exception("Invalid pid: " + pid);
}
return(Process.GetProcessById(pid));
} catch (Exception e) {
Logger.Write(LogLevel.Error, "Error while talking to the shim for socket file {0}", socketFile);
Logger.Write(e);
return(null);
} finally {
if (torelease != null)
{
buffers.ReturnBuffer(torelease.Value);
}
}
}