Changeset 96831 in webkit for trunk/Source/JavaScriptCore/runtime/ClassInfo.h

Timestamp:

Oct 6, 2011, 10:42:50 AM (14 years ago)

Author:

[email protected]

Message:

JSC objects need to know their own cell size at runtime.
​https://bugs.webkit.org/show_bug.cgi?id=69390

Reviewed by Geoffrey Garen.

Added the cellSize field to ClassInfo and the static calculation of
size of each class to the CREATE_METHOD_TABLE macro, which will be
renamed in a followup patch to make its name match its broader use.

Also added a few ClassInfo structs so that each object that is allocated has its
correct size.

• JavaScriptCore.exp:
• runtime/ClassInfo.h:

Changed JSByteArray s_defaultInfo to s_info so that the template will get the
correct ClassInfo struct from it when it's allocated.

• runtime/JSByteArray.cpp:
• runtime/JSByteArray.h:
• runtime/JSCell.h:

(JSC::allocateCell):

• runtime/JSNotAnObject.cpp:
• runtime/JSNotAnObject.h:
• runtime/JSObject.cpp:
• runtime/JSObject.h:

(JSC::JSCell::cellSize):

• runtime/JSStaticScopeObject.cpp:
• runtime/JSStaticScopeObject.h:
• runtime/StrictEvalActivation.cpp:
• runtime/StrictEvalActivation.h:

File:

• trunk/Source/JavaScriptCore/runtime/ClassInfo.h (modified) (2 diffs)

trunk/Source/JavaScriptCore/runtime/ClassInfo.h

@@ -42 +42 @@
         &ClassName::visitChildren, \
         &ClassName::getCallData \
-    }
+    }, \
+    sizeof(ClassName)
 
     struct ClassInfo {
@@ -80 +81 @@
 
         MethodTable methodTable;
+
+        size_t cellSize;
     };