Author: Anton Gulenko <anton.gule...@googlemail.com>
Branch: storage
Changeset: r912:541b01ff2814
Date: 2014-07-14 20:22 +0200
http://bitbucket.org/pypy/lang-smalltalk/changeset/541b01ff2814/
Log: Some fixes to storage strategies:
- Added size parameter to each Shadow constructor
- Optimized transitions between certain strategies.
diff --git a/spyvm/model.py b/spyvm/model.py
--- a/spyvm/model.py
+++ b/spyvm/model.py
@@ -693,7 +693,7 @@
old_shadow = self._get_shadow()
shadow = old_shadow
if not isinstance(old_shadow, TheClass):
- shadow = TheClass(space, self)
+ shadow = TheClass(space, self, old_shadow.size())
self.switch_shadow(shadow)
return shadow
diff --git a/spyvm/plugins/bitblt.py b/spyvm/plugins/bitblt.py
--- a/spyvm/plugins/bitblt.py
+++ b/spyvm/plugins/bitblt.py
@@ -727,8 +727,8 @@
_attrs_ = ["w_bits", "width", "height", "depth", "offsetX",
"offsetY", "msb", "pixPerWord", "pitch", "invalid"]
- def __init__(self, space, w_self):
- AbstractCachingShadow.__init__(self, space, w_self)
+ def __init__(self, space, w_self, size):
+ AbstractCachingShadow.__init__(self, space, w_self, size)
self.invalid = False
def intOrIfNil(self, w_int, i):
diff --git a/spyvm/primitives.py b/spyvm/primitives.py
--- a/spyvm/primitives.py
+++ b/spyvm/primitives.py
@@ -1314,7 +1314,7 @@
# The block bytecodes are stored inline: so we skip past the
# byteodes to invoke this primitive to find them (hence +2)
initialip = s_frame.pc() + 2
- s_new_context = shadow.BlockContextShadow(interp.space, None,
w_method_context, argcnt, initialip)
+ s_new_context = shadow.BlockContextShadow(interp.space, None, 0,
w_method_context, argcnt, initialip)
return s_new_context.w_self()
@expose_primitive(VALUE, result_is_new_frame=True)
diff --git a/spyvm/shadow.py b/spyvm/shadow.py
--- a/spyvm/shadow.py
+++ b/spyvm/shadow.py
@@ -17,7 +17,7 @@
provides_getname = False
repr_classname = "AbstractShadow"
- def __init__(self, space, w_self):
+ def __init__(self, space, w_self, size):
self.space = space
assert w_self is None or isinstance(w_self, model.W_PointersObject)
self._w_self = w_self
@@ -64,7 +64,7 @@
_attrs_ = []
repr_classname = "AbstractStorageShadow"
def __init__(self, space, w_self, size):
- AbstractShadow.__init__(self, space, w_self)
+ AbstractShadow.__init__(self, space, w_self, size)
def store(self, n0, w_val):
if self.can_contain(w_val):
return self.do_store(n0, w_val)
@@ -79,6 +79,15 @@
raise NotImplementedError()
def generalized_strategy_for(self, w_val):
raise NotImplementedError()
+
+ def copy_from_AllNil(self, all_nil_storage):
+ pass # Already initialized
+ def copy_from(self, other_shadow):
+ assert self.size() == other_shadow.size()
+ for i in range(self.size()):
+ w_val = other_shadow.fetch(i)
+ if not w_val.is_nil(self.space): # nil fields already initialized
+ self.store(i, w_val)
class AllNilStorageShadow(AbstractStorageShadow):
repr_classname = "AllNilStorageShadow"
@@ -130,9 +139,6 @@
self.storage[n0] = self.nil_value
else:
self.storage[n0] = self.unwrap(self.space, w_val)
-
- def copy_from_AllNil(self, all_nil_storage):
- pass # Already initialized
# This is to avoid code duplication
@objectmodel.specialize.arg(0)
@@ -230,13 +236,6 @@
self.initialize_storage(size)
def size(self):
return len(self.storage)
- def copy_from(self, other_shadow):
- if self.size() != other_shadow.size():
- self.initialize_storage(other_shadow.size())
- for i in range(self.size()):
- w_val = other_shadow.fetch(i)
- if not w_val.is_nil(self.space):
- self.store(i, w_val)
class ListStorageShadow(AbstractStorageShadow):
_attrs_ = ['storage']
@@ -273,8 +272,8 @@
import_from_mixin(version.VersionMixin)
version = None
- def __init__(self, space, w_self):
- ListStorageShadow.__init__(self, space, w_self, 0)
+ def __init__(self, space, w_self, size):
+ ListStorageShadow.__init__(self, space, w_self, size)
self.changed()
# ____________________________________________________________
@@ -305,9 +304,9 @@
provides_getname = True
repr_classname = "ClassShadow"
- def __init__(self, space, w_self):
+ def __init__(self, space, w_self, size):
self.subclass_s = {}
- AbstractCachingShadow.__init__(self, space, w_self)
+ AbstractCachingShadow.__init__(self, space, w_self, size)
def store(self, n0, w_val):
AbstractCachingShadow.store(self, n0, w_val)
@@ -425,7 +424,7 @@
def flush_method_caches(self):
look_in_shadow = self
while look_in_shadow is not None:
- look_in_shadow.s_methoddict().sync_method_cache()
+ look_in_shadow.s_methoddict().flush_method_cache()
look_in_shadow = look_in_shadow._s_superclass
def new(self, extrasize=0):
@@ -535,7 +534,7 @@
"NOT_RPYTHON" # this is only for testing.
if self._s_methoddict is None:
w_methoddict = model.W_PointersObject(self.space, None, 2)
- w_methoddict.store(self.space, 1,
model.W_PointersObject(self.space, None, 0))
+ w_methoddict.store(self.space, constants.METHODDICT_VALUES_INDEX,
model.W_PointersObject(self.space, None, 0))
self.store_s_methoddict(w_methoddict.as_methoddict_get_shadow(self.space))
self.s_methoddict().invalid = False
@@ -553,11 +552,11 @@
_attrs_ = ['methoddict', 'invalid', 's_class']
repr_classname = "MethodDictionaryShadow"
- def __init__(self, space, w_self):
+ def __init__(self, space, w_self, size):
self.invalid = True
self.s_class = None
self.methoddict = {}
- ListStorageShadow.__init__(self, space, w_self, 0)
+ ListStorageShadow.__init__(self, space, w_self, size)
def update(self):
self.sync_method_cache()
@@ -567,7 +566,7 @@
return None # we may be invalid if Smalltalk code did not call
flushCache
return self.methoddict.get(w_selector, None)
- # Remove update call for changes to ourselves:
+ # We do not call update() after changes to ourselves:
# Whenever a method is added, it's keyword is added to w_self, then the
# w_compiled_method is added to our observee.
# sync_method_cache at this point would not have the desired effect,
because in
@@ -575,17 +574,30 @@
# its contents array is filled with the value belonging to the new key.
def store(self, n0, w_value):
ListStorageShadow.store(self, n0, w_value)
- self.invalid = True
-
+ if n0 == constants.METHODDICT_VALUES_INDEX:
+ self.setup_notification()
+ if n0 >= constants.METHODDICT_NAMES_INDEX:
+ self.invalid = True
+
+ def setup_notification(self):
+ self.w_values().as_observed_get_shadow(self.space).notify(self)
+
+ def w_values(self):
+ w_values = self.fetch(constants.METHODDICT_VALUES_INDEX)
+ assert isinstance(w_values, model.W_PointersObject)
+ return w_values
+
+ def flush_method_cache(self):
+ # Lazy synchronization: Only flush the cache, if we are already
synchronized.
+ if self.invalid:
+ self.sync_method_cache()
+
def sync_method_cache(self):
if self.size() == 0:
return
- w_values = self.fetch(constants.METHODDICT_VALUES_INDEX)
- assert isinstance(w_values, model.W_PointersObject)
- s_values = w_values.as_observed_get_shadow(self.space)
- s_values.notify(self)
+ self.methoddict = {}
size = self.size() - constants.METHODDICT_NAMES_INDEX
- self.methoddict = {}
+ w_values = self.w_values()
for i in range(size):
w_selector = self.w_self().fetch(self.space,
constants.METHODDICT_NAMES_INDEX+i)
if not w_selector.is_nil(self.space):
@@ -614,12 +626,12 @@
_attrs_ = ['_w_self_size']
repr_classname = "AbstractRedirectingShadow"
- def __init__(self, space, w_self):
- AbstractShadow.__init__(self, space, w_self)
+ def __init__(self, space, w_self, size):
if w_self is not None:
self._w_self_size = w_self.size()
else:
- self._w_self_size = 0
+ self._w_self_size = size
+ AbstractShadow.__init__(self, space, w_self, self._w_self_size)
def size(self):
return self._w_self_size
@@ -641,9 +653,9 @@
# ______________________________________________________________________
# Initialization
- def __init__(self, space, w_self):
+ def __init__(self, space, w_self, size=0):
self._s_sender = None
- AbstractRedirectingShadow.__init__(self, space, w_self)
+ AbstractRedirectingShadow.__init__(self, space, w_self, size)
self.instances_w = {}
def copy_field_from(self, n0, other_shadow):
@@ -981,14 +993,14 @@
# === Initialization ===
- def __init__(self, space, w_self=None, w_home=None, argcnt=0, initialip=0):
+ def __init__(self, space, w_self=None, size=0, w_home=None, argcnt=0,
initialip=0):
self = jit.hint(self, access_directly=True, fresh_virtualizable=True)
creating_w_self = w_self is None
if creating_w_self:
s_home = w_home.as_methodcontext_get_shadow(space)
contextsize = s_home.size() - s_home.tempsize()
w_self = model.W_PointersObject(space, space.w_BlockContext,
contextsize)
- ContextPartShadow.__init__(self, space, w_self)
+ ContextPartShadow.__init__(self, space, w_self, size)
if creating_w_self:
w_self.store_shadow(self)
self.store_expected_argument_count(argcnt)
@@ -1115,10 +1127,10 @@
# === Initialization ===
@jit.unroll_safe
- def __init__(self, space, w_self=None, w_method=None, w_receiver=None,
+ def __init__(self, space, w_self=None, size=0, w_method=None,
w_receiver=None,
arguments=[], closure=None, pc=0):
self = jit.hint(self, access_directly=True, fresh_virtualizable=True)
- ContextPartShadow.__init__(self, space, w_self)
+ ContextPartShadow.__init__(self, space, w_self, size)
self.store_w_receiver(w_receiver)
self.store_pc(pc)
self.closure = closure
@@ -1280,8 +1292,8 @@
class ObserveeShadow(ListStorageShadow):
_attrs_ = ['dependent']
repr_classname = "ObserveeShadow"
- def __init__(self, space, w_self):
- ListStorageShadow.__init__(self, space, w_self, 0)
+ def __init__(self, space, w_self, size):
+ ListStorageShadow.__init__(self, space, w_self, size)
self.dependent = None
def store(self, n0, w_value):
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