Added all files

1 files changed, 55 insertions, 0 deletions

diff --git a/xlators/bindings/python/src/glusterstack.py b/xlators/bindings/python/src/glusterstack.py
new file mode 100644
index 000000000..ba24c8165
--- /dev/null
+++ b/xlators/bindings/python/src/glusterstack.py
@@ -0,0 +1,55 @@
+#   Copyright (c) 2007 Chris AtLee <chris@atlee.ca>
+#   This file is part of GlusterFS.
+#
+#   GlusterFS is free software; you can redistribute it and/or modify
+#   it under the terms of the GNU General Public License as published
+#   by the Free Software Foundation; either version 3 of the License,
+#   or (at your option) any later version.
+#
+#   GlusterFS is distributed in the hope that it will be useful, but
+#   WITHOUT ANY WARRANTY; without even the implied warranty of
+#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+#   General Public License for more details.
+#
+#   You should have received a copy of the GNU General Public License
+#   along with this program.  If not, see
+#   <http://www.gnu.org/licenses/>.
+from ctypes import *
+from glustertypes import *
+
+libc = CDLL("libc.so.6")
+calloc = libc.calloc
+calloc.argtypes = [c_int, c_int]
+calloc.restype = c_void_p
+
+# TODO: Can these be done in C somehow?
+def stack_wind(frame, rfn, obj, fn, *params):
+    """Frame is a frame object"""
+    _new = cast(calloc(1, sizeof(call_frame_t)), POINTER(call_frame_t))
+    _new[0].root = frame.root
+    _new[0].next = frame.root[0].frames.next
+    _new[0].prev = pointer(frame.root[0].frames)
+    if frame.root[0].frames.next:
+        frame.root[0].frames.next[0].prev = _new
+    frame.root[0].frames.next = _new
+    _new[0].this = obj
+    # TODO: Type checking like tmp_cbk?
+    _new[0].ret = rfn
+    _new[0].parent = pointer(frame)
+    _new[0].cookie = cast(_new, c_void_p)
+    # TODO: Initialize lock
+    #_new.lock.init()
+    frame.ref_count += 1
+    fn(_new, obj, *params)
+
+def stack_unwind(frame, *params):
+    """Frame is a frame object"""
+    fn = frame[0].ret
+    parent = frame[0].parent[0]
+    parent.ref_count -= 1
+
+    op_ret = params[0]
+    op_err = params[1]
+    params = params[2:]
+    fn(parent, call_frame_t.from_address(frame[0].cookie), parent.this,
+            op_ret, op_err, *params)