Changeset 94445 in webkit for trunk/Source/JavaScriptCore/JavaScriptCore.exp

Timestamp:

Sep 2, 2011, 1:41:59 PM (14 years ago)

Author:

[email protected]

Message:

Use bump allocator for initial property storage
​https://bugs.webkit.org/show_bug.cgi?id=67494

Reviewed by Gavin Barraclough.

Switch to a bump allocator for the initial out of line
property storage. This gives us slightly faster allocation
for short lived objects that need out of line storage at
the cost of an additional memcpy when the object survives
a GC pass.

No performance impact.

• JavaScriptCore.exp:
• heap/Heap.cpp:

(JSC::Heap::collect):

• heap/Heap.h:

(JSC::Heap::allocatePropertyStorage):
(JSC::Heap::inPropertyStorageNursary):

• heap/NewSpace.cpp:

(JSC::NewSpace::NewSpace):

• heap/NewSpace.h:

(JSC::NewSpace::resetPropertyStorageNursary):
(JSC::NewSpace::allocatePropertyStorage):
(JSC::NewSpace::inPropertyStorageNursary):

• jit/JITStubs.cpp:

(JSC::DEFINE_STUB_FUNCTION):

• runtime/JSObject.cpp:

(JSC::JSObject::allocatePropertyStorage):

• runtime/JSObject.h:

(JSC::JSObject::~JSObject):
(JSC::JSObject::putDirectInternal):
(JSC::JSObject::putDirectWithoutTransition):
(JSC::JSObject::putDirectFunctionWithoutTransition):
(JSC::JSObject::transitionTo):
(JSC::JSObject::visitChildrenDirect):

File:

• trunk/Source/JavaScriptCore/JavaScriptCore.exp (modified) (2 diffs)

trunk/Source/JavaScriptCore/JavaScriptCore.exp

@@ -217 +217 @@
 __ZN3JSC22objectConstructorTableE
 __ZN3JSC23AbstractSamplingCounter4dumpEv
+__ZN3JSC23AbstractSamplingCounter30s_abstractSamplingCounterChainE
 __ZN3JSC23objectProtoFuncToStringEPNS_9ExecStateE
 __ZN3JSC23setUpStaticFunctionSlotEPNS_9ExecStateEPKNS_9HashEntryEPNS_8JSObjectERKNS_10IdentifierERNS_12PropertySlotE
@@ -323 +324 @@
 __ZN3JSC8JSObject21getPropertyDescriptorEPNS_9ExecStateERKNS_10IdentifierERNS_18PropertyDescriptorE
 __ZN3JSC8JSObject22fillGetterPropertySlotERNS_12PropertySlotEPNS_16WriteBarrierBaseINS_7UnknownEEE
-__ZN3JSC8JSObject23allocatePropertyStorageEmm
+__ZN3JSC8JSObject23allocatePropertyStorageERNS_12JSGlobalDataEmm
 __ZN3JSC8JSObject24getOwnPropertyDescriptorEPNS_9ExecStateERKNS_10IdentifierERNS_18PropertyDescriptorE
 __ZN3JSC8JSObject3putEPNS_9ExecStateERKNS_10IdentifierENS_7JSValueERNS_15PutPropertySlotE