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Diffstat (limited to 'src/3rdparty/v8/src/handles.h')
| -rw-r--r-- | src/3rdparty/v8/src/handles.h | 375 |
1 files changed, 0 insertions, 375 deletions
diff --git a/src/3rdparty/v8/src/handles.h b/src/3rdparty/v8/src/handles.h deleted file mode 100644 index b0b271c..0000000 --- a/src/3rdparty/v8/src/handles.h +++ /dev/null @@ -1,375 +0,0 @@ -// Copyright 2011 the V8 project authors. All rights reserved. -// Redistribution and use in source and binary forms, with or without -// modification, are permitted provided that the following conditions are -// met: -// -// * Redistributions of source code must retain the above copyright -// notice, this list of conditions and the following disclaimer. -// * 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. -// * Neither the name of Google Inc. nor the names of its -// contributors may be used to endorse or promote products derived -// from this software without specific prior written permission. -// -// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS -// "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 THE COPYRIGHT -// OWNER 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 V8_HANDLES_H_ -#define V8_HANDLES_H_ - -#include "allocation.h" -#include "apiutils.h" - -namespace v8 { -namespace internal { - -// ---------------------------------------------------------------------------- -// A Handle provides a reference to an object that survives relocation by -// the garbage collector. -// Handles are only valid within a HandleScope. -// When a handle is created for an object a cell is allocated in the heap. - -template<typename T> -class Handle { - public: - INLINE(explicit Handle(T** location)) { location_ = location; } - INLINE(explicit Handle(T* obj)); - INLINE(Handle(T* obj, Isolate* isolate)); - - INLINE(Handle()) : location_(NULL) {} - - // Constructor for handling automatic up casting. - // Ex. Handle<JSFunction> can be passed when Handle<Object> is expected. - template <class S> Handle(Handle<S> handle) { -#ifdef DEBUG - T* a = NULL; - S* b = NULL; - a = b; // Fake assignment to enforce type checks. - USE(a); -#endif - location_ = reinterpret_cast<T**>(handle.location_); - } - - INLINE(T* operator ->() const) { return operator*(); } - - // Check if this handle refers to the exact same object as the other handle. - bool is_identical_to(const Handle<T> other) const { - return *location_ == *other.location_; - } - - // Provides the C++ dereference operator. - INLINE(T* operator*() const); - - // Returns the address to where the raw pointer is stored. - INLINE(T** location() const); - - template <class S> static Handle<T> cast(Handle<S> that) { - T::cast(*that); - return Handle<T>(reinterpret_cast<T**>(that.location())); - } - - static Handle<T> null() { return Handle<T>(); } - bool is_null() const { return location_ == NULL; } - - // Closes the given scope, but lets this handle escape. See - // implementation in api.h. - inline Handle<T> EscapeFrom(v8::HandleScope* scope); - - private: - T** location_; - - // Handles of different classes are allowed to access each other's location_. - template<class S> friend class Handle; -}; - - -// Convenience wrapper. -template<class T> -inline Handle<T> handle(T* t, Isolate* isolate) { - return Handle<T>(t, isolate); -} - - -class DeferredHandles; -class HandleScopeImplementer; - - -// A stack-allocated class that governs a number of local handles. -// After a handle scope has been created, all local handles will be -// allocated within that handle scope until either the handle scope is -// deleted or another handle scope is created. If there is already a -// handle scope and a new one is created, all allocations will take -// place in the new handle scope until it is deleted. After that, -// new handles will again be allocated in the original handle scope. -// -// After the handle scope of a local handle has been deleted the -// garbage collector will no longer track the object stored in the -// handle and may deallocate it. The behavior of accessing a handle -// for which the handle scope has been deleted is undefined. -class HandleScope { - public: - explicit inline HandleScope(Isolate* isolate); - - inline ~HandleScope(); - - // Counts the number of allocated handles. - static int NumberOfHandles(Isolate* isolate); - - // Creates a new handle with the given value. - template <typename T> - static inline T** CreateHandle(Isolate* isolate, T* value); - - // Deallocates any extensions used by the current scope. - static void DeleteExtensions(Isolate* isolate); - - static Address current_next_address(Isolate* isolate); - static Address current_limit_address(Isolate* isolate); - static Address current_level_address(Isolate* isolate); - - // Closes the HandleScope (invalidating all handles - // created in the scope of the HandleScope) and returns - // a Handle backed by the parent scope holding the - // value of the argument handle. - template <typename T> - Handle<T> CloseAndEscape(Handle<T> handle_value); - - Isolate* isolate() { return isolate_; } - - private: - // Prevent heap allocation or illegal handle scopes. - HandleScope(const HandleScope&); - void operator=(const HandleScope&); - void* operator new(size_t size); - void operator delete(void* size_t); - - inline void CloseScope(); - - Isolate* isolate_; - Object** prev_next_; - Object** prev_limit_; - - // Extend the handle scope making room for more handles. - static internal::Object** Extend(Isolate* isolate); - - // Zaps the handles in the half-open interval [start, end). - static void ZapRange(internal::Object** start, internal::Object** end); - - friend class v8::internal::DeferredHandles; - friend class v8::HandleScope; - friend class v8::internal::HandleScopeImplementer; - friend class v8::ImplementationUtilities; - friend class v8::internal::Isolate; -}; - - -class DeferredHandles; - - -class DeferredHandleScope { - public: - explicit DeferredHandleScope(Isolate* isolate); - // The DeferredHandles object returned stores the Handles created - // since the creation of this DeferredHandleScope. The Handles are - // alive as long as the DeferredHandles object is alive. - DeferredHandles* Detach(); - ~DeferredHandleScope(); - - private: - Object** prev_limit_; - Object** prev_next_; - HandleScopeImplementer* impl_; - -#ifdef DEBUG - bool handles_detached_; - int prev_level_; -#endif - - friend class HandleScopeImplementer; -}; - - -// ---------------------------------------------------------------------------- -// Handle operations. -// They might invoke garbage collection. The result is an handle to -// an object of expected type, or the handle is an error if running out -// of space or encountering an internal error. - -// Flattens a string. -void FlattenString(Handle<String> str); - -// Flattens a string and returns the underlying external or sequential -// string. -Handle<String> FlattenGetString(Handle<String> str); - -Handle<Object> SetProperty(Isolate* isolate, - Handle<Object> object, - Handle<Object> key, - Handle<Object> value, - PropertyAttributes attributes, - StrictModeFlag strict_mode); - -Handle<Object> ForceSetProperty(Handle<JSObject> object, - Handle<Object> key, - Handle<Object> value, - PropertyAttributes attributes); - -Handle<Object> ForceDeleteProperty(Handle<JSObject> object, - Handle<Object> key); - -Handle<Object> GetProperty(Handle<JSReceiver> obj, - const char* name); - -Handle<Object> GetProperty(Isolate* isolate, - Handle<Object> obj, - Handle<Object> key); - -Handle<Object> GetPropertyWithInterceptor(Handle<JSObject> receiver, - Handle<JSObject> holder, - Handle<String> name, - PropertyAttributes* attributes); - -Handle<Object> SetPrototype(Handle<JSObject> obj, Handle<Object> value); - -Handle<Object> LookupSingleCharacterStringFromCode(Isolate* isolate, - uint32_t index); - -Handle<JSObject> Copy(Handle<JSObject> obj); - -Handle<Object> SetAccessor(Handle<JSObject> obj, Handle<AccessorInfo> info); - -Handle<FixedArray> AddKeysFromJSArray(Handle<FixedArray>, - Handle<JSArray> array); - -// Get the JS object corresponding to the given script; create it -// if none exists. -Handle<JSValue> GetScriptWrapper(Handle<Script> script); - -// Script line number computations. Note that the line number is zero-based. -void InitScriptLineEnds(Handle<Script> script); -// For string calculates an array of line end positions. If the string -// does not end with a new line character, this character may optionally be -// imagined. -Handle<FixedArray> CalculateLineEnds(Handle<String> string, - bool with_imaginary_last_new_line); -int GetScriptLineNumber(Handle<Script> script, int code_position); -// The safe version does not make heap allocations but may work much slower. -int GetScriptLineNumberSafe(Handle<Script> script, int code_position); -int GetScriptColumnNumber(Handle<Script> script, int code_position); -Handle<Object> GetScriptNameOrSourceURL(Handle<Script> script); - -// Computes the enumerable keys from interceptors. Used for debug mirrors and -// by GetKeysInFixedArrayFor below. -v8::Handle<v8::Array> GetKeysForNamedInterceptor(Handle<JSReceiver> receiver, - Handle<JSObject> object); -v8::Handle<v8::Array> GetKeysForIndexedInterceptor(Handle<JSReceiver> receiver, - Handle<JSObject> object); - -enum KeyCollectionType { LOCAL_ONLY, INCLUDE_PROTOS }; - -// Computes the enumerable keys for a JSObject. Used for implementing -// "for (n in object) { }". -Handle<FixedArray> GetKeysInFixedArrayFor(Handle<JSReceiver> object, - KeyCollectionType type, - bool* threw); -Handle<JSArray> GetKeysFor(Handle<JSReceiver> object, bool* threw); -Handle<FixedArray> ReduceFixedArrayTo(Handle<FixedArray> array, int length); -Handle<FixedArray> GetEnumPropertyKeys(Handle<JSObject> object, - bool cache_result); - -// Computes the union of keys and return the result. -// Used for implementing "for (n in object) { }" -Handle<FixedArray> UnionOfKeys(Handle<FixedArray> first, - Handle<FixedArray> second); - -Handle<String> SubString(Handle<String> str, - int start, - int end, - PretenureFlag pretenure = NOT_TENURED); - -// Sets the expected number of properties for the function's instances. -void SetExpectedNofProperties(Handle<JSFunction> func, int nof); - -// Sets the prototype property for a function instance. -void SetPrototypeProperty(Handle<JSFunction> func, Handle<JSObject> value); - -// Sets the expected number of properties based on estimate from compiler. -void SetExpectedNofPropertiesFromEstimate(Handle<SharedFunctionInfo> shared, - int estimate); - - -Handle<JSGlobalProxy> ReinitializeJSGlobalProxy( - Handle<JSFunction> constructor, - Handle<JSGlobalProxy> global); - -Handle<Object> SetPrototype(Handle<JSFunction> function, - Handle<Object> prototype); - -Handle<ObjectHashSet> ObjectHashSetAdd(Handle<ObjectHashSet> table, - Handle<Object> key); - -Handle<ObjectHashSet> ObjectHashSetRemove(Handle<ObjectHashSet> table, - Handle<Object> key); - -Handle<ObjectHashTable> PutIntoObjectHashTable(Handle<ObjectHashTable> table, - Handle<Object> key, - Handle<Object> value); - -class NoHandleAllocation BASE_EMBEDDED { - public: -#ifndef DEBUG - explicit NoHandleAllocation(Isolate* isolate) {} - ~NoHandleAllocation() {} -#else - explicit inline NoHandleAllocation(Isolate* isolate); - inline ~NoHandleAllocation(); - private: - Isolate* isolate_; - int level_; - bool active_; -#endif -}; - - -class NoHandleDereference BASE_EMBEDDED { - public: -#ifndef DEBUG - explicit NoHandleDereference(Isolate* isolate) {} - ~NoHandleDereference() {} -#else - explicit inline NoHandleDereference(Isolate* isolate); - inline ~NoHandleDereference(); - private: - Isolate* isolate_; - bool old_state_; -#endif -}; - - -class AllowHandleDereference BASE_EMBEDDED { - public: -#ifndef DEBUG - explicit AllowHandleDereference(Isolate* isolate) {} - ~AllowHandleDereference() {} -#else - explicit inline AllowHandleDereference(Isolate* isolate); - inline ~AllowHandleDereference(); - private: - Isolate* isolate_; - bool old_state_; -#endif -}; - -} } // namespace v8::internal - -#endif // V8_HANDLES_H_ |