public void TestSpawn()
{
Spawn spawn;
UnixReader reader;
string[] argv = { "/bin/cat" };
UnixStream stream;
StreamWriter writer;
int stdin, stdout, stderr;
spawn = new Spawn ();
spawn.SpawnAsyncWithPipes (null,
argv,
null,
GSpawnFlags.G_SPAWN_DO_NOT_REAP_CHILD,
null,
out pid,
out stdin, out stdout, out stderr);
pids_matched = false;
exit_status_is_good = false;
spawn.ChildWatchAdd (pid, child_watch_cb);
stream = new UnixStream (stdin, true);
writer = new StreamWriter (stream);
writer.Write ("Hello, world!");
writer.Close (); /* this will close the stdin fd */
reader = new UnixReader (stdout);
reader.DataAvailable += data_available_cb;
reader.Closed += closed_cb;
string_equal = false;
closed = false;
loop = new MainLoop ();
loop.Run ();
Assert.IsTrue (string_equal, "Read the correct string");
Assert.IsTrue (closed, "UnixReader got closed");
Assert.IsTrue (pids_matched, "PID of child process");
Assert.IsTrue (exit_status_is_good, "Exit status of child process");
}
public void Run(Aggregator aggregator, string[] argv, string stdin_str)
{
if (state != State.PreRun)
throw new ApplicationException ("Tried to Run() an AggregatorRunner which was not in PreRun state");
if (aggregator == null)
throw new ArgumentNullException ("aggregator");
if (argv == null)
throw new ArgumentNullException ("argv");
this.aggregator = aggregator;
try {
int[] pipe;
spawn = new Spawn ();
pipe = new int[2];
if (unix.pipe (pipe) != 0)
throw new UnixIOException (Mono.Unix.Native.Stdlib.GetLastError ());
Spawn.ChildSetupFunc child_setup_fn = delegate () {
int process_group;
UnixStream child_stream;
StreamWriter child_writer;
process_group = unix.setsid ();
child_stream = new UnixStream (pipe[1], false);
child_writer = new StreamWriter (child_stream);
child_writer.Write ("{0}\n", process_group);
child_writer.Close ();
};
spawn.SpawnAsyncWithPipes (null,
argv,
null,
GSpawnFlags.G_SPAWN_DO_NOT_REAP_CHILD | GSpawnFlags.G_SPAWN_SEARCH_PATH,
child_setup_fn,
out child_pid,
out child_stdin,
out child_stdout,
out child_stderr);
child_watch_id = spawn.ChildWatchAdd (child_pid, child_watch_cb);
UnixStream parent_stream;
StreamReader parent_reader;
string str;
parent_stream = new UnixStream (pipe[0], false);
parent_reader = new StreamReader (parent_stream);
str = parent_reader.ReadLine ();
parent_reader.Close ();
child_process_group = int.Parse (str);
if (child_process_group == -1)
throw new ApplicationException ("Could not get the child process group");
state = State.Running;
stdout_reader = new UnixReader (child_stdout);
stdout_reader.DataAvailable += stdout_reader_data_available_cb;
stdout_reader.Closed += stdout_reader_closed_cb;
stderr_reader = new UnixReader (child_stderr);
stderr_reader.DataAvailable += stderr_reader_data_available_cb;
stderr_reader.Closed += stderr_reader_closed_cb;
line_reader = new LineReader ();
line_reader.LineAvailable += line_reader_line_available_cb;
if (stdin_str != null)
write_stdin_to_child (stdin_str);
} catch (GException e) {
Console.WriteLine ("error when spawning: {0}", e);
/* FIXME: report something better --- re-throw the exception here? */
state = State.Error;
}
}
