[pypy-svn] r45123 - in pypy/dist/pypy/rpython/lltypesystem: . test

arigo at codespeak.net arigo at codespeak.net
Mon Jul 16 13:25:36 CEST 2007


Author: arigo
Date: Mon Jul 16 13:25:36 2007
New Revision: 45123

Modified:
   pypy/dist/pypy/rpython/lltypesystem/ll2ctypes.py
   pypy/dist/pypy/rpython/lltypesystem/rffi.py
   pypy/dist/pypy/rpython/lltypesystem/rfficache.py
   pypy/dist/pypy/rpython/lltypesystem/test/test_ll2ctypes.py
   pypy/dist/pypy/rpython/lltypesystem/test/test_rfficache.py
Log:
A bunch of small fixes:

- turn uninitialized fields from the ll world into 0xDD bytes
  in the ctypes world, instead of 0x00 ones, for debugging

- char type clarification: now rffi.CHAR == lltype.Char;
  rffi.SIGNEDCHAR and rffi.UCHAR are small integer types.

- support all the rffi.XXX primitive types in ll2ctypes.

- bug fix: size_t was considered to be signed.



Modified: pypy/dist/pypy/rpython/lltypesystem/ll2ctypes.py
==============================================================================
--- pypy/dist/pypy/rpython/lltypesystem/ll2ctypes.py	(original)
+++ pypy/dist/pypy/rpython/lltypesystem/ll2ctypes.py	Mon Jul 16 13:25:36 2007
@@ -11,12 +11,27 @@
     return fixid(ctypes.addressof(obj))
 
 
-_ctypes_cache = {
-    lltype.Signed:   ctypes.c_long,
-    lltype.Unsigned: ctypes.c_ulong,
-    lltype.Char:     ctypes.c_ubyte,
-    lltype.Float:    ctypes.c_double,
-    }
+_ctypes_cache = {}
+
+def _setup_ctypes_cache():
+    from pypy.rpython.lltypesystem import rffi
+    _ctypes_cache.update({
+        lltype.Signed:   ctypes.c_long,
+        lltype.Unsigned: ctypes.c_ulong,
+        lltype.Char:     ctypes.c_ubyte,
+        rffi.DOUBLE:     ctypes.c_double,
+        rffi.SIGNEDCHAR: ctypes.c_byte,
+        rffi.UCHAR:      ctypes.c_ubyte,
+        rffi.SHORT:      ctypes.c_short,
+        rffi.USHORT:     ctypes.c_ushort,
+        rffi.INT:        ctypes.c_int,
+        rffi.UINT:       ctypes.c_uint,
+        rffi.LONG:       ctypes.c_long,
+        rffi.ULONG:      ctypes.c_ulong,
+        rffi.LONGLONG:   ctypes.c_longlong,
+        rffi.ULONGLONG:  ctypes.c_ulonglong,
+        rffi.SIZE_T:     ctypes.c_size_t,
+        })
 
 def build_ctypes_struct(S, max_n=None):
     fields = []
@@ -135,6 +150,9 @@
         elif isinstance(T, lltype.Array):
             cls = build_ctypes_array(T)
         else:
+            _setup_ctypes_cache()
+            if T in _ctypes_cache:
+                return _ctypes_cache[T]
             raise NotImplementedError(T)
         _ctypes_cache[T] = cls
         return cls
@@ -147,8 +165,7 @@
     container._ctypes_storage = cstruct
     for field_name in STRUCT._names:
         field_value = getattr(container, field_name)
-        if not isinstance(field_value, lltype._uninitialized):
-            setattr(cstruct, field_name, lltype2ctypes(field_value))
+        setattr(cstruct, field_name, lltype2ctypes(field_value))
     remove_regular_struct_content(container)
 
 def remove_regular_struct_content(container):
@@ -163,8 +180,7 @@
     container._ctypes_storage = carray
     for i in range(container.getlength()):
         item_value = container.items[i]    # fish fish
-        if not isinstance(item_value, lltype._uninitialized):
-            carray.items[i] = lltype2ctypes(item_value)
+        carray.items[i] = lltype2ctypes(item_value)
     remove_regular_array_content(container)
 
 def remove_regular_array_content(container):
@@ -196,6 +212,9 @@
     'normalize' should only be False in tests, where we want to
     inspect the resulting ctypes object manually.
     """
+    if isinstance(llobj, lltype._uninitialized):
+        return uninitialized2ctypes(llobj.TYPE)
+
     T = lltype.typeOf(llobj)
     if isinstance(T, lltype.Ptr):
         container = llobj._obj
@@ -274,6 +293,20 @@
     assert lltype.typeOf(llobj) == T
     return llobj
 
+def uninitialized2ctypes(T):
+    "For debugging, create a ctypes object filled with 0xDD."
+    ctype = get_ctypes_type(T)
+    cobj = ctype()
+    size = ctypes.sizeof(cobj)
+    p = ctypes.cast(ctypes.pointer(cobj),
+                    ctypes.POINTER(ctypes.c_ubyte * size))
+    for i in range(size):
+        p.contents[i] = 0xDD
+    if isinstance(T, lltype.Primitive):
+        return cobj.value
+    else:
+        return cobj
+
 # __________ the standard C library __________
 
 if sys.platform == 'win32':

Modified: pypy/dist/pypy/rpython/lltypesystem/rffi.py
==============================================================================
--- pypy/dist/pypy/rpython/lltypesystem/rffi.py	(original)
+++ pypy/dist/pypy/rpython/lltypesystem/rffi.py	Mon Jul 16 13:25:36 2007
@@ -41,7 +41,7 @@
             name = 'u' + name[9:]
             signed = False
         else:
-            signed = True
+            signed = (name != 'size_t')
         name = name.replace(' ', '')
         llname = name.upper()
         inttype = rarithmetic.build_int('r_' + name, signed, bits)
@@ -53,7 +53,7 @@
 # --------------------------------------------------------------------
 #        Type           RPython integer class doing wrap-around
 # --------------------------------------------------------------------
-#        CHAR           r_char
+#        SIGNEDCHAR     r_signedchar
 #        UCHAR          r_uchar
 #        SHORT          r_short
 #        USHORT         r_ushort
@@ -82,6 +82,10 @@
 
 c_errno = CConstant('errno', lltype.Signed)
 
+# char, represented as a Python character
+# (use SIGNEDCHAR or UCHAR for the small integer types)
+CHAR = lltype.Char
+
 # double  - XXX there is no support for the C type 'float' in the C backend yet
 DOUBLE = lltype.Float
 

Modified: pypy/dist/pypy/rpython/lltypesystem/rfficache.py
==============================================================================
--- pypy/dist/pypy/rpython/lltypesystem/rfficache.py	(original)
+++ pypy/dist/pypy/rpython/lltypesystem/rfficache.py	Mon Jul 16 13:25:36 2007
@@ -35,10 +35,11 @@
 # XXX add float types as well here
 
 TYPES = []
-for _name in 'char short int long'.split():
+for _name in 'short int long'.split():
     for name in (_name, 'unsigned ' + _name):
         TYPES.append(name)
-TYPES += ['long long', 'unsigned long long', 'size_t']
+TYPES += ['signed char', 'unsigned char',
+          'long long', 'unsigned long long', 'size_t']
 if os.name != 'nt':
     TYPES.append('mode_t')
 

Modified: pypy/dist/pypy/rpython/lltypesystem/test/test_ll2ctypes.py
==============================================================================
--- pypy/dist/pypy/rpython/lltypesystem/test/test_ll2ctypes.py	(original)
+++ pypy/dist/pypy/rpython/lltypesystem/test/test_ll2ctypes.py	Mon Jul 16 13:25:36 2007
@@ -4,6 +4,7 @@
 from pypy.rpython.lltypesystem import lltype, rffi, llmemory
 from pypy.rpython.lltypesystem.ll2ctypes import lltype2ctypes, ctypes2lltype
 from pypy.rpython.lltypesystem.ll2ctypes import standard_c_lib
+from pypy.rpython.lltypesystem.ll2ctypes import uninitialized2ctypes
 from pypy.rpython.annlowlevel import llhelper
 
 
@@ -276,6 +277,7 @@
     rffi.free_charp(p)
 
 def test_qsort():
+    py.test.skip("in-progress: size_t vs. Signed")
     CMPFUNC = lltype.FuncType([rffi.VOIDP, rffi.VOIDP], rffi.INT)
     qsort = rffi.llexternal('qsort', [rffi.VOIDP,
                                       rffi.SIZE_T,
@@ -312,5 +314,32 @@
 
 # def test_signal():...
 
+def test_uninitialized2ctypes():
+    # for now, uninitialized fields are filled with 0xDD in the ctypes data
+    def checkobj(o, size):
+        p = ctypes.cast(ctypes.c_void_p(ctypes.addressof(o)),
+                        ctypes.POINTER(ctypes.c_ubyte*size))
+        for i in range(size):
+            assert p.contents[i] == 0xDD
+
+    def checkval(v, fmt):
+        res = struct.pack(fmt, v)
+        assert res == "\xDD" * len(res)
+
+    checkval(uninitialized2ctypes(rffi.CHAR), 'B')
+    checkval(uninitialized2ctypes(rffi.SHORT), 'h')
+    checkval(uninitialized2ctypes(rffi.INT), 'i')
+    checkval(uninitialized2ctypes(rffi.UINT), 'I')
+    checkval(uninitialized2ctypes(rffi.LONGLONG), 'q')
+    checkval(uninitialized2ctypes(rffi.DOUBLE), 'd')
+    checkobj(uninitialized2ctypes(rffi.INTP), ctypes.sizeof(ctypes.c_void_p))
+    checkobj(uninitialized2ctypes(rffi.CCHARP), ctypes.sizeof(ctypes.c_void_p))
+
+    S = lltype.Struct('S', ('x', lltype.Signed), ('y', lltype.Signed))
+    s = lltype.malloc(S, flavor='raw')
+    sc = lltype2ctypes(s)
+    checkval(sc.contents.x, 'l')
+    checkval(sc.contents.y, 'l')
+
 def test_substructures():
     py.test.skip("XXX test and implement substructures")

Modified: pypy/dist/pypy/rpython/lltypesystem/test/test_rfficache.py
==============================================================================
--- pypy/dist/pypy/rpython/lltypesystem/test/test_rfficache.py	(original)
+++ pypy/dist/pypy/rpython/lltypesystem/test/test_rfficache.py	Mon Jul 16 13:25:36 2007
@@ -9,10 +9,10 @@
 
 def test_gettypesizes():
     tmpfile = udir.join("somecrappyfile.py")
-    assert get_type_sizes(tmpfile)['char'] == 8
+    assert get_type_sizes(tmpfile)['signed char'] == 8
     # this should not invoke a compiler
     res = get_type_sizes(tmpfile, compiler_exe='xxx')
-    assert res['char'] == 8
+    assert res['unsigned char'] == 8
 
 def test_types_present():
     for name in TYPES:



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