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| author | Jim Fulton <jim@zope.com> | 2004-07-14 19:08:17 (GMT) |
|---|---|---|
| committer | Jim Fulton <jim@zope.com> | 2004-07-14 19:08:17 (GMT) |
| commit | aa6389e13be460cce1f16f2a525ba8754737d30b (patch) | |
| tree | 719b5d9c9331896054b9a4f09e5d2e95e086f898 /Include/objimpl.h | |
| parent | 8c5aeaa2770c958414c0785229a5e038ed97a234 (diff) | |
| download | cpython-aa6389e13be460cce1f16f2a525ba8754737d30b.zip cpython-aa6389e13be460cce1f16f2a525ba8754737d30b.tar.gz cpython-aa6389e13be460cce1f16f2a525ba8754737d30b.tar.bz2 | |
Documented the new Py_VISIT macro to simplify implementation of
tp_traverse handlers. (Tim made me do it. ;)
Diffstat (limited to 'Include/objimpl.h')
| -rw-r--r-- | Include/objimpl.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/Include/objimpl.h b/Include/objimpl.h index 3679cba..649d1bc 100644 --- a/Include/objimpl.h +++ b/Include/objimpl.h @@ -302,6 +302,16 @@ PyAPI_FUNC(void) PyObject_GC_Del(void *); ( (type *) _PyObject_GC_NewVar((typeobj), (n)) ) +/* Utility macro to help write tp_traverse functions */ +#define Py_VISIT(op) \ + do { \ + if (op) { \ + int vret = visit((op), arg); \ + if (vret) \ + return vret; \ + } \ + } while (0) + /* This is here for the sake of backwards compatibility. Extensions that * use the old GC API will still compile but the objects will not be * tracked by the GC. */ |