[pypy-commit] pypy use-mmap: Trying to use mmap() for memory allocations done by the RPython GC

[arigo]

Author: Armin Rigo <ar...@tunes.org>
Branch: use-mmap
Changeset: r85578:c645b576c5ad
Date: 2016-07-06 15:14 +0200
http://bitbucket.org/pypy/pypy/changeset/c645b576c5ad/

Log:    Trying to use mmap() for memory allocations done by the RPython GC

diff --git a/pypy/module/cpyext/api.py b/pypy/module/cpyext/api.py
--- a/pypy/module/cpyext/api.py
+++ b/pypy/module/cpyext/api.py
@@ -613,7 +613,7 @@
         }.items():
         GLOBALS['%s#%s' % (cpyname, pypy_decl)] = ('PyTypeObject*', pypyexpr)
 
-    for cpyname in '''PyMethodObject PyListObject PyLongObject
+    for cpyname in '''PyMethodObject PyListObject
                       PyDictObject PyClassObject'''.split():
         FORWARD_DECLS.append('typedef struct { PyObject_HEAD } %s'
                              % (cpyname, ))
diff --git a/pypy/module/cpyext/include/longintrepr.h 
b/pypy/module/cpyext/include/longintrepr.h
--- a/pypy/module/cpyext/include/longintrepr.h
+++ b/pypy/module/cpyext/include/longintrepr.h
@@ -1,1 +1,28 @@
-/* empty */
+#ifndef Py_LONGINTREPR_H
+#define Py_LONGINTREPR_H
+
+/* 
+    Should not be used, but is, by a few projects out there.
+*/
+#include <stdint.h>
+
+
+#define PYLONG_BITS_IN_DIGIT  30
+typedef uint32_t digit;
+typedef int32_t sdigit;
+typedef uint64_t twodigits;
+typedef int64_t stwodigits;
+#define PyLong_SHIFT    30
+#define _PyLong_DECIMAL_SHIFT   9 /* max(e such that 10**e fits in a digit) */
+#define _PyLong_DECIMAL_BASE    ((digit)1000000000) /* 10 ** DECIMAL_SHIFT */
+
+#define PyLong_BASE ((digit)1 << PyLong_SHIFT)
+#define PyLong_MASK ((digit)(PyLong_BASE - 1))
+
+/* b/w compatibility with Python 2.5 */
+#define SHIFT   PyLong_SHIFT
+#define BASE    PyLong_BASE
+#define MASK    PyLong_MASK
+
+
+#endif
diff --git a/pypy/module/cpyext/longobject.py b/pypy/module/cpyext/longobject.py
--- a/pypy/module/cpyext/longobject.py
+++ b/pypy/module/cpyext/longobject.py
@@ -9,6 +9,14 @@
 from rpython.rlib.rarithmetic import intmask
 
 
+PyLongObjectStruct = lltype.ForwardReference()
+PyLongObject = lltype.Ptr(PyLongObjectStruct)
+Digits = rffi.CArray(PyObject)
+PyTupleObjectFields = PyObjectFields + \
+    (("ob_size", Py_ssize_t), ("ob_item", lltype.Ptr(ObjectItems)))
+cpython_struct("PyTupleObject", PyTupleObjectFields, PyTupleObjectStruct)
+
+
 PyLong_Check, PyLong_CheckExact = build_type_checkers("Long")
 
 @cpython_api([lltype.Signed], PyObject)
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