[Win32] Fix the asynchronous g_spawn* to return the process handle of the
2002-11-18 Tor Lillqvist <tml@iki.fi>
[Win32] Fix the asynchronous g_spawn* to return the process handle
of the started program properly. (Note: not the process id. The
spawn*() functions in the C runtime return the created process's
handle. There doesn't seem to be any way to get the process id of
a child process if you have the handle. But then, the process
handle usually is more useful anyway.)
* glib/gspawn-win32-helper.c (WinMain): If the spawning of the
child process succeeded, and if asynchronous spawn (P_NOWAIT),
write the result handle up to the parent process, waiting to read
it in do_spawn_with_pipes().
* glib/gspawn-win32.c (do_spawn): Use return value from spawning
the helper. If it is -1 the helper wasn't found or couldn't be run
for some reason. Otherwise it is the helper's process handle.
(g_spawn_async_with_pipes): Pass the child_pid parameter on to
do_spawn_with_pipes().
(do_spawn_with_pipes): Take also a child_pid parameter. If
do_spawn() returned -1, fail immediately. Otherwise make the
handle passed to us by the helper process into a handle valid in
this process by calling DuplicateHandle().