summaryrefslogtreecommitdiff
path: root/Source/JavaScriptCore/runtime/FunctionRareData.h
diff options
context:
space:
mode:
authorLorry Tar Creator <lorry-tar-importer@lorry>2016-04-10 09:28:39 +0000
committerLorry Tar Creator <lorry-tar-importer@lorry>2016-04-10 09:28:39 +0000
commit32761a6cee1d0dee366b885b7b9c777e67885688 (patch)
treed6bec92bebfb216f4126356e55518842c2f476a1 /Source/JavaScriptCore/runtime/FunctionRareData.h
parenta4e969f4965059196ca948db781e52f7cfebf19e (diff)
downloadWebKitGtk-tarball-32761a6cee1d0dee366b885b7b9c777e67885688.tar.gz
webkitgtk-2.4.11webkitgtk-2.4.11
Diffstat (limited to 'Source/JavaScriptCore/runtime/FunctionRareData.h')
-rw-r--r--Source/JavaScriptCore/runtime/FunctionRareData.h121
1 files changed, 0 insertions, 121 deletions
diff --git a/Source/JavaScriptCore/runtime/FunctionRareData.h b/Source/JavaScriptCore/runtime/FunctionRareData.h
deleted file mode 100644
index d6e97e676..000000000
--- a/Source/JavaScriptCore/runtime/FunctionRareData.h
+++ /dev/null
@@ -1,121 +0,0 @@
-/*
- * Copyright (C) 2015-2016 Apple Inc. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
- * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
- * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
- * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
- * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
- * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
- * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
- * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#ifndef FunctionRareData_h
-#define FunctionRareData_h
-
-#include "InternalFunctionAllocationProfile.h"
-#include "JSCell.h"
-#include "ObjectAllocationProfile.h"
-#include "Watchpoint.h"
-
-namespace JSC {
-
-class JSGlobalObject;
-class LLIntOffsetsExtractor;
-namespace DFG {
-class SpeculativeJIT;
-class JITCompiler;
-}
-
-class FunctionRareData : public JSCell {
- friend class JIT;
- friend class DFG::SpeculativeJIT;
- friend class DFG::JITCompiler;
- friend class VM;
-
-public:
- typedef JSCell Base;
- static const unsigned StructureFlags = StructureIsImmortal | Base::StructureFlags;
-
- static FunctionRareData* create(VM&);
-
- static const bool needsDestruction = true;
- static void destroy(JSCell*);
-
- static Structure* createStructure(VM&, JSGlobalObject*, JSValue prototype);
-
- static void visitChildren(JSCell*, SlotVisitor&);
-
- DECLARE_INFO;
-
- static inline ptrdiff_t offsetOfObjectAllocationProfile()
- {
- return OBJECT_OFFSETOF(FunctionRareData, m_objectAllocationProfile);
- }
-
- ObjectAllocationProfile* objectAllocationProfile()
- {
- return &m_objectAllocationProfile;
- }
-
- Structure* objectAllocationStructure() { return m_objectAllocationProfile.structure(); }
-
- InlineWatchpointSet& allocationProfileWatchpointSet()
- {
- return m_objectAllocationProfileWatchpoint;
- }
-
- void clear(const char* reason);
-
- void initializeObjectAllocationProfile(VM&, JSObject* prototype, size_t inlineCapacity);
-
- bool isObjectAllocationProfileInitialized() { return !m_objectAllocationProfile.isNull(); }
-
- Structure* internalFunctionAllocationStructure() { return m_internalFunctionAllocationProfile.structure(); }
- Structure* createInternalFunctionAllocationStructureFromBase(VM& vm, JSObject* prototype, Structure* baseStructure)
- {
- return m_internalFunctionAllocationProfile.createAllocationStructureFromBase(vm, this, prototype, baseStructure);
- }
-
-protected:
- FunctionRareData(VM&);
- ~FunctionRareData();
-
-private:
-
- friend class LLIntOffsetsExtractor;
-
- // Ideally, there would only be one allocation profile for subclassing but due to Reflect.construct we
- // have two. There are some pros and cons in comparison to our current system to using the same profile
- // for both JS constructors and subclasses of builtin constructors:
- //
- // 1) + Uses less memory.
- // 2) + Conceptually simplier as there is only one profile.
- // 3) - We would need a check in all JSFunction object creations (both with classes and without) that the
- // new.target's profiled structure has a JSFinalObject ClassInfo. This is needed, for example, if we have
- // `Reflect.construct(Array, args, myConstructor)` since myConstructor will be the new.target of Array
- // the Array constructor will set the allocation profile of myConstructor to hold an Array structure
- //
- // We don't really care about 1) since this memory is rare and small in total. 2) is unfortunate but is
- // probably outweighed by the cost of 3).
- ObjectAllocationProfile m_objectAllocationProfile;
- InlineWatchpointSet m_objectAllocationProfileWatchpoint;
- InternalFunctionAllocationProfile m_internalFunctionAllocationProfile;
-};
-
-} // namespace JSC
-
-#endif // FunctionRareData_h