Author: wenzhuman <[email protected]>
Branch: gc-pinning
Changeset: r71804:6f41a99edd76
Date: 2014-06-02 04:01 -0400
http://bitbucket.org/pypy/pypy/changeset/6f41a99edd76/
Log: modify can_move() and add pin() and unpin()
diff --git a/rpython/memory/gc/incminimark.py b/rpython/memory/gc/incminimark.py
--- a/rpython/memory/gc/incminimark.py
+++ b/rpython/memory/gc/incminimark.py
@@ -165,6 +165,7 @@
class IncrementalMiniMarkGC(MovingGCBase):
_alloc_flavor_ = "raw"
+ can_pin_objects = True
inline_simple_malloc = True
inline_simple_malloc_varsize = True
needs_write_barrier = True
@@ -884,7 +885,13 @@
def can_move(self, obj):
"""Overrides the parent can_move()."""
- return self.is_in_nursery(obj)
+ return (self.is_in_nursery(obj) & not self.header(obj).tid &
GCFLAG_PINNED)
+
+ def pin(self, obj):
+ self.header(obj).tid |= GCFLAG_PINNED
+
+ def unpin(self, obj):
+ self.header(obj).tid &= ~GCFLAG_PINNED
def shrink_array(self, obj, smallerlength):
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