[pypy-commit] stmgc gc-small-uniform: A test specifically for the synchronization missing on small objs

[arigo]

Author: Armin Rigo <arigo at tunes.org>
Branch: gc-small-uniform
Changeset: r1141:390e71973114
Date: 2014-04-07 18:26 +0200
http://bitbucket.org/pypy/stmgc/changeset/390e71973114/

Log:	A test specifically for the synchronization missing on small objs

diff --git a/c7/test/test_nursery.py b/c7/test/test_nursery.py
--- a/c7/test/test_nursery.py
+++ b/c7/test/test_nursery.py
@@ -197,3 +197,30 @@
 
         self.start_transaction()
         assert lib.stm_can_move(old) == 0
+
+    def test_synchronize_small_obj(self):
+        # make a shared page, and privatize it
+        self.start_transaction()
+        new = stm_allocate(16)
+        self.push_root(new)
+        self.commit_transaction()
+        new = self.pop_root()
+        self.push_root(new)
+
+        self.start_transaction()
+        stm_set_char(new, 'A')
+        self.commit_transaction()
+
+        # make a new object of the same size, which should end in the
+        # same page
+        self.start_transaction()
+        new2 = stm_allocate(16)
+        stm_set_char(new2, 'a')
+        self.push_root(new2)
+        self.commit_transaction()
+        new2 = self.pop_root()
+
+        # check that this new object was correctly sychronized
+        self.switch(1)
+        self.start_transaction()
+        assert stm_get_char(new2) == 'a'