Author: Armin Rigo <[email protected]>
Branch:
Changeset: r66:48bc3f6660a8
Date: 2013-06-05 16:43 +0200
http://bitbucket.org/pypy/stmgc/changeset/48bc3f6660a8/
Log: Add a passing test
diff --git a/c3/test/test_et.py b/c3/test/test_et.py
--- a/c3/test/test_et.py
+++ b/c3/test/test_et.py
@@ -84,3 +84,24 @@
assert classify(p) == "protected"
assert classify(pback) == "backup"
assert ffi.cast("revision_t *", p.h_revision) == pback
+
+def test_protected_backup_reused():
+ p = nalloc(HDR + WORD)
+ lib.setlong(p, 0, 78927812)
+ lib.stm_commit_transaction()
+ lib.stm_begin_inevitable_transaction()
+ lib.setlong(p, 0, 927122)
+ pback = lib.stm_get_backup_copy(p)
+ assert pback != p
+ lib.stm_commit_transaction()
+ lib.stm_begin_inevitable_transaction()
+ assert lib.stm_get_backup_copy(p) == ffi.NULL
+ assert classify(p) == "protected"
+ assert classify(pback) == "backup"
+ assert lib.rawgetlong(p, 0) == 927122
+ assert lib.rawgetlong(pback, 0) == 78927812 # but should not be used
+ lib.setlong(p, 0, 43891)
+ assert p.h_revision == lib.get_private_rev_num()
+ assert pback == lib.stm_get_backup_copy(p)
+ assert lib.rawgetlong(p, 0) == 43891
+ assert lib.rawgetlong(pback, 0) == 927122
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