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Implement os.waitpid() for Windows, in a way that's compatible with Linux

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where their capabilities intersect.  Would be nice if people using non-
MSVC compilers (Borland etc) took a whack at doing something similar for
them (this code relies on the MS _cwait function).
This commit is contained in:
Tim Peters 2002-02-01 11:27:43 +00:00
parent 0c350bfad0
commit ab034fab03
3 changed files with 56 additions and 8 deletions
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30
Modules/posixmodule.c
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@ -78,6 +78,7 @@ corresponding Unix manual entries for more information on calls.";
#define HAVE_PIPE 1
#define HAVE_POPEN 1
#define HAVE_SYSTEM 1
#define HAVE_CWAIT 1
#else /* 16-bit Windows */
#endif /* !MS_WIN32 */
#else /* all other compilers */
@ -3333,8 +3334,33 @@ posix_waitpid(PyObject *self, PyObject *args)
else
return Py_BuildValue("ii", pid, status_i);
}
#endif /* HAVE_WAITPID */
#elif defined(HAVE_CWAIT)
/* MS C has a variant of waitpid() that's usable for most purposes. */
static char posix_waitpid__doc__[] =
"waitpid(pid, options) -> (pid, status << 8)\n"
"Wait for completion of a given process. options is ignored on Windows.";
static PyObject *
posix_waitpid(PyObject *self, PyObject *args)
{
int pid, options;
int status;
if (!PyArg_ParseTuple(args, "ii:waitpid", &pid, &options))
return NULL;
Py_BEGIN_ALLOW_THREADS
pid = _cwait(&status, pid, options);
Py_END_ALLOW_THREADS
if (pid == -1)
return posix_error();
else
/* shift the status left a byte so this is more like the
POSIX waitpid */
return Py_BuildValue("ii", pid, status << 8);
}
#endif /* HAVE_WAITPID || HAVE_CWAIT */
#ifdef HAVE_WAIT
static char posix_wait__doc__[] =
@ -5678,7 +5704,7 @@ static PyMethodDef posix_methods[] = {
#ifdef HAVE_WAIT
{"wait", posix_wait, METH_VARARGS, posix_wait__doc__},
#endif /* HAVE_WAIT */
#ifdef HAVE_WAITPID
#if defined(HAVE_WAITPID) || defined(HAVE_CWAIT)
{"waitpid", posix_waitpid, METH_VARARGS, posix_waitpid__doc__},
#endif /* HAVE_WAITPID */
#ifdef HAVE_SETSID