[pypy-commit] pypy default: Make Module.w_dict as quasi-immut.

alex_gaynor noreply at buildbot.pypy.org
Sun Jul 10 06:10:08 CEST 2011


Author: Alex Gaynor <alex.gaynor at gmail.com>
Branch: 
Changeset: r45446:25a92fba83d0
Date: 2011-07-09 21:09 -0700
http://bitbucket.org/pypy/pypy/changeset/25a92fba83d0/

Log:	Make Module.w_dict as quasi-immut.

diff --git a/pypy/interpreter/module.py b/pypy/interpreter/module.py
--- a/pypy/interpreter/module.py
+++ b/pypy/interpreter/module.py
@@ -9,6 +9,8 @@
 class Module(Wrappable):
     """A module."""
 
+    _immutable_fields_ = ["w_dict?"]
+
     _frozen = False
 
     def __init__(self, space, w_name, w_dict=None, add_package=True):
diff --git a/pypy/module/pypyjit/test_pypy_c/test_globals.py b/pypy/module/pypyjit/test_pypy_c/test_globals.py
new file mode 100644
--- /dev/null
+++ b/pypy/module/pypyjit/test_pypy_c/test_globals.py
@@ -0,0 +1,30 @@
+from pypy.module.pypyjit.test_pypy_c.test_00_model import BaseTestPyPyC
+
+
+class TestGlobals(BaseTestPyPyC):
+    def test_load_builtin(self):
+        def main(n):
+            import pypyjit
+
+            i = 0
+            while i < n:
+                l = len # ID: loadglobal
+                i += pypyjit.residual_call(l, "a")
+            return i
+        #
+        log = self.run(main, [500])
+        assert log.result == 500
+        loop, = log.loops_by_filename(self.filepath)
+        assert loop.match_by_id("loadglobal", """
+            p10 = getfield_gc(p0, descr=<GcPtrFieldDescr .*Frame.inst_w_globals .*>)
+            guard_value(p10, ConstPtr(ptr11), descr=...)
+            p12 = getfield_gc(p10, descr=<GcPtrFieldDescr .*W_DictMultiObject.inst_strategy .*>)
+            guard_value(p12, ConstPtr(ptr13), descr=...)
+            p15 = getfield_gc(ConstPtr(ptr14), descr=<GcPtrFieldDescr .*ModuleCell.inst_w_value .*>)
+            guard_isnull(p15, descr=...)
+            guard_not_invalidated(descr=...)
+            p19 = getfield_gc(ConstPtr(p17), descr=<GcPtrFieldDescr .*W_DictMultiObject.inst_strategy .*>)
+            guard_value(p19, ConstPtr(ptr20), descr=...)
+            p22 = getfield_gc(ConstPtr(ptr21), descr=<GcPtrFieldDescr .*ModuleCell.inst_w_value .*>)
+            guard_nonnull(p22, descr=...)
+        """)
\ No newline at end of file


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