dc2e3069e7
Reason for revert: Cannot reproduce gc-stress failures locally. Original issue's description: > Revert of Replace all remaining Oddball checks with new function (patchset #10 id:180001 of https://codereview.chromium.org/2043183003/ ) > > Reason for revert: > failing tests > > Original issue's description: > > Replace all remaining Oddball checks with new function > > > > This CL removes the IsUndefined() and Co. methods from Object and HeapObject. > > The new method all take the isolate as parameter. > > > > BUG= > > > > Committed: https://crrev.com/ccefb3ae5fe967288d568013fb04e8761eafebc5 > > Cr-Commit-Position: refs/heads/master@{#36921} > > TBR=mstarzinger@chromium.org,verwaest@chromium.org,yangguo@chromium.org,ahaas@chromium.org > # Skipping CQ checks because original CL landed less than 1 days ago. > NOPRESUBMIT=true > NOTREECHECKS=true > NOTRY=true > BUG= > > Committed: https://crrev.com/33b8bc24a12fb062100c0be84456faeb0b9fa5d1 > Cr-Commit-Position: refs/heads/master@{#36923} TBR=mstarzinger@chromium.org,verwaest@chromium.org,yangguo@chromium.org,ahaas@chromium.org BUG= Review-Url: https://codereview.chromium.org/2059173002 Cr-Commit-Position: refs/heads/master@{#36957}
702 lines
24 KiB
C++
702 lines
24 KiB
C++
// Copyright 2012 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef V8_API_H_
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#define V8_API_H_
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#include "include/v8-testing.h"
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#include "src/contexts.h"
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#include "src/factory.h"
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#include "src/isolate.h"
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#include "src/list.h"
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#include "src/objects-inl.h"
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namespace v8 {
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// Constants used in the implementation of the API. The most natural thing
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// would usually be to place these with the classes that use them, but
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// we want to keep them out of v8.h because it is an externally
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// visible file.
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class Consts {
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public:
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enum TemplateType {
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FUNCTION_TEMPLATE = 0,
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OBJECT_TEMPLATE = 1
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};
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};
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// Utilities for working with neander-objects, primitive
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// env-independent JSObjects used by the api.
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class NeanderObject {
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public:
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explicit NeanderObject(v8::internal::Isolate* isolate, int size);
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explicit inline NeanderObject(v8::internal::Handle<v8::internal::Object> obj);
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explicit inline NeanderObject(v8::internal::Object* obj);
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inline v8::internal::Object* get(int index);
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inline void set(int index, v8::internal::Object* value);
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inline v8::internal::Handle<v8::internal::JSObject> value() { return value_; }
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int size();
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private:
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v8::internal::Handle<v8::internal::JSObject> value_;
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};
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// Utilities for working with neander-arrays, a simple extensible
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// array abstraction built on neander-objects.
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class NeanderArray {
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public:
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explicit NeanderArray(v8::internal::Isolate* isolate);
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explicit inline NeanderArray(v8::internal::Handle<v8::internal::Object> obj);
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inline v8::internal::Handle<v8::internal::JSObject> value() {
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return obj_.value();
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}
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void add(internal::Isolate* isolate,
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v8::internal::Handle<v8::internal::Object> value);
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int length();
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v8::internal::Object* get(int index);
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// Change the value at an index to undefined value. If the index is
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// out of bounds, the request is ignored. Returns the old value.
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void set(int index, v8::internal::Object* value);
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private:
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NeanderObject obj_;
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};
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NeanderObject::NeanderObject(v8::internal::Handle<v8::internal::Object> obj)
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: value_(v8::internal::Handle<v8::internal::JSObject>::cast(obj)) { }
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NeanderObject::NeanderObject(v8::internal::Object* obj)
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: value_(v8::internal::Handle<v8::internal::JSObject>(
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v8::internal::JSObject::cast(obj))) { }
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NeanderArray::NeanderArray(v8::internal::Handle<v8::internal::Object> obj)
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: obj_(obj) { }
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v8::internal::Object* NeanderObject::get(int offset) {
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DCHECK(value()->HasFastObjectElements());
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return v8::internal::FixedArray::cast(value()->elements())->get(offset);
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}
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void NeanderObject::set(int offset, v8::internal::Object* value) {
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DCHECK(value_->HasFastObjectElements());
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v8::internal::FixedArray::cast(value_->elements())->set(offset, value);
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}
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template <typename T> inline T ToCData(v8::internal::Object* obj) {
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STATIC_ASSERT(sizeof(T) == sizeof(v8::internal::Address));
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if (obj == v8::internal::Smi::FromInt(0)) return nullptr;
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return reinterpret_cast<T>(
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reinterpret_cast<intptr_t>(
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v8::internal::Foreign::cast(obj)->foreign_address()));
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}
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template <typename T>
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inline v8::internal::Handle<v8::internal::Object> FromCData(
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v8::internal::Isolate* isolate, T obj) {
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STATIC_ASSERT(sizeof(T) == sizeof(v8::internal::Address));
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if (obj == nullptr) return handle(v8::internal::Smi::FromInt(0), isolate);
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return isolate->factory()->NewForeign(
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reinterpret_cast<v8::internal::Address>(reinterpret_cast<intptr_t>(obj)));
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}
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class ApiFunction {
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public:
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explicit ApiFunction(v8::internal::Address addr) : addr_(addr) { }
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v8::internal::Address address() { return addr_; }
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private:
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v8::internal::Address addr_;
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};
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class RegisteredExtension {
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public:
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explicit RegisteredExtension(Extension* extension);
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static void Register(RegisteredExtension* that);
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static void UnregisterAll();
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Extension* extension() { return extension_; }
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RegisteredExtension* next() { return next_; }
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static RegisteredExtension* first_extension() { return first_extension_; }
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private:
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Extension* extension_;
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RegisteredExtension* next_;
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static RegisteredExtension* first_extension_;
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};
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#define OPEN_HANDLE_LIST(V) \
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V(Template, TemplateInfo) \
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V(FunctionTemplate, FunctionTemplateInfo) \
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V(ObjectTemplate, ObjectTemplateInfo) \
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V(Signature, FunctionTemplateInfo) \
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V(AccessorSignature, FunctionTemplateInfo) \
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V(Data, Object) \
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V(RegExp, JSRegExp) \
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V(Object, JSReceiver) \
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V(Array, JSArray) \
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V(Map, JSMap) \
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V(Set, JSSet) \
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V(ArrayBuffer, JSArrayBuffer) \
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V(ArrayBufferView, JSArrayBufferView) \
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V(TypedArray, JSTypedArray) \
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V(Uint8Array, JSTypedArray) \
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V(Uint8ClampedArray, JSTypedArray) \
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V(Int8Array, JSTypedArray) \
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V(Uint16Array, JSTypedArray) \
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V(Int16Array, JSTypedArray) \
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V(Uint32Array, JSTypedArray) \
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V(Int32Array, JSTypedArray) \
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V(Float32Array, JSTypedArray) \
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V(Float64Array, JSTypedArray) \
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V(DataView, JSDataView) \
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V(SharedArrayBuffer, JSArrayBuffer) \
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V(Name, Name) \
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V(String, String) \
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V(Symbol, Symbol) \
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V(Script, JSFunction) \
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V(UnboundScript, SharedFunctionInfo) \
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V(Function, JSReceiver) \
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V(Message, JSMessageObject) \
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V(Context, Context) \
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V(External, Object) \
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V(StackTrace, JSArray) \
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V(StackFrame, JSObject) \
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V(Proxy, JSProxy) \
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V(NativeWeakMap, JSWeakMap)
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class Utils {
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public:
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static inline bool ApiCheck(bool condition,
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const char* location,
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const char* message) {
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if (!condition) Utils::ReportApiFailure(location, message);
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return condition;
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}
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static Local<FunctionTemplate> ToFunctionTemplate(NeanderObject obj);
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static Local<ObjectTemplate> ToObjectTemplate(NeanderObject obj);
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static inline Local<Context> ToLocal(
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v8::internal::Handle<v8::internal::Context> obj);
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static inline Local<Value> ToLocal(
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v8::internal::Handle<v8::internal::Object> obj);
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static inline Local<Name> ToLocal(
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v8::internal::Handle<v8::internal::Name> obj);
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static inline Local<String> ToLocal(
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v8::internal::Handle<v8::internal::String> obj);
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static inline Local<Symbol> ToLocal(
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v8::internal::Handle<v8::internal::Symbol> obj);
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static inline Local<RegExp> ToLocal(
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v8::internal::Handle<v8::internal::JSRegExp> obj);
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static inline Local<Object> ToLocal(
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v8::internal::Handle<v8::internal::JSReceiver> obj);
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static inline Local<Object> ToLocal(
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v8::internal::Handle<v8::internal::JSObject> obj);
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static inline Local<Array> ToLocal(
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v8::internal::Handle<v8::internal::JSArray> obj);
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static inline Local<Map> ToLocal(
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v8::internal::Handle<v8::internal::JSMap> obj);
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static inline Local<Set> ToLocal(
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v8::internal::Handle<v8::internal::JSSet> obj);
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static inline Local<Proxy> ToLocal(
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v8::internal::Handle<v8::internal::JSProxy> obj);
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static inline Local<ArrayBuffer> ToLocal(
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v8::internal::Handle<v8::internal::JSArrayBuffer> obj);
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static inline Local<ArrayBufferView> ToLocal(
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v8::internal::Handle<v8::internal::JSArrayBufferView> obj);
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static inline Local<DataView> ToLocal(
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v8::internal::Handle<v8::internal::JSDataView> obj);
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static inline Local<TypedArray> ToLocal(
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v8::internal::Handle<v8::internal::JSTypedArray> obj);
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static inline Local<Uint8Array> ToLocalUint8Array(
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v8::internal::Handle<v8::internal::JSTypedArray> obj);
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static inline Local<Uint8ClampedArray> ToLocalUint8ClampedArray(
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v8::internal::Handle<v8::internal::JSTypedArray> obj);
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static inline Local<Int8Array> ToLocalInt8Array(
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v8::internal::Handle<v8::internal::JSTypedArray> obj);
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static inline Local<Uint16Array> ToLocalUint16Array(
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v8::internal::Handle<v8::internal::JSTypedArray> obj);
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static inline Local<Int16Array> ToLocalInt16Array(
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v8::internal::Handle<v8::internal::JSTypedArray> obj);
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static inline Local<Uint32Array> ToLocalUint32Array(
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v8::internal::Handle<v8::internal::JSTypedArray> obj);
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static inline Local<Int32Array> ToLocalInt32Array(
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v8::internal::Handle<v8::internal::JSTypedArray> obj);
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static inline Local<Float32Array> ToLocalFloat32Array(
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v8::internal::Handle<v8::internal::JSTypedArray> obj);
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static inline Local<Float64Array> ToLocalFloat64Array(
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v8::internal::Handle<v8::internal::JSTypedArray> obj);
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static inline Local<SharedArrayBuffer> ToLocalShared(
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v8::internal::Handle<v8::internal::JSArrayBuffer> obj);
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static inline Local<Message> MessageToLocal(
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v8::internal::Handle<v8::internal::Object> obj);
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static inline Local<Promise> PromiseToLocal(
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v8::internal::Handle<v8::internal::JSObject> obj);
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static inline Local<StackTrace> StackTraceToLocal(
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v8::internal::Handle<v8::internal::JSArray> obj);
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static inline Local<StackFrame> StackFrameToLocal(
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v8::internal::Handle<v8::internal::JSObject> obj);
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static inline Local<Number> NumberToLocal(
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v8::internal::Handle<v8::internal::Object> obj);
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static inline Local<Integer> IntegerToLocal(
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v8::internal::Handle<v8::internal::Object> obj);
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static inline Local<Uint32> Uint32ToLocal(
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v8::internal::Handle<v8::internal::Object> obj);
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static inline Local<FunctionTemplate> ToLocal(
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v8::internal::Handle<v8::internal::FunctionTemplateInfo> obj);
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static inline Local<ObjectTemplate> ToLocal(
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v8::internal::Handle<v8::internal::ObjectTemplateInfo> obj);
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static inline Local<Signature> SignatureToLocal(
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v8::internal::Handle<v8::internal::FunctionTemplateInfo> obj);
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static inline Local<AccessorSignature> AccessorSignatureToLocal(
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v8::internal::Handle<v8::internal::FunctionTemplateInfo> obj);
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static inline Local<External> ExternalToLocal(
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v8::internal::Handle<v8::internal::JSObject> obj);
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static inline Local<NativeWeakMap> NativeWeakMapToLocal(
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v8::internal::Handle<v8::internal::JSWeakMap> obj);
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static inline Local<Function> CallableToLocal(
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v8::internal::Handle<v8::internal::JSReceiver> obj);
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#define DECLARE_OPEN_HANDLE(From, To) \
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static inline v8::internal::Handle<v8::internal::To> \
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OpenHandle(const From* that, bool allow_empty_handle = false);
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OPEN_HANDLE_LIST(DECLARE_OPEN_HANDLE)
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#undef DECLARE_OPEN_HANDLE
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template<class From, class To>
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static inline Local<To> Convert(v8::internal::Handle<From> obj) {
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DCHECK(obj.is_null() ||
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(obj->IsSmi() ||
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!obj->IsTheHole(i::HeapObject::cast(*obj)->GetIsolate())));
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return Local<To>(reinterpret_cast<To*>(obj.location()));
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}
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template <class T>
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static inline v8::internal::Handle<v8::internal::Object> OpenPersistent(
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const v8::Persistent<T>& persistent) {
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return v8::internal::Handle<v8::internal::Object>(
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reinterpret_cast<v8::internal::Object**>(persistent.val_));
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}
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template <class T>
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static inline v8::internal::Handle<v8::internal::Object> OpenPersistent(
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v8::Persistent<T>* persistent) {
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return OpenPersistent(*persistent);
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}
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template <class From, class To>
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static inline v8::internal::Handle<To> OpenHandle(v8::Local<From> handle) {
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return OpenHandle(*handle);
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}
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private:
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static void ReportApiFailure(const char* location, const char* message);
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};
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template <class T>
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inline T* ToApi(v8::internal::Handle<v8::internal::Object> obj) {
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return reinterpret_cast<T*>(obj.location());
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}
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template <class T>
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inline v8::Local<T> ToApiHandle(
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v8::internal::Handle<v8::internal::Object> obj) {
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return Utils::Convert<v8::internal::Object, T>(obj);
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}
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template <class T>
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inline bool ToLocal(v8::internal::MaybeHandle<v8::internal::Object> maybe,
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Local<T>* local) {
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v8::internal::Handle<v8::internal::Object> handle;
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if (maybe.ToHandle(&handle)) {
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*local = Utils::Convert<v8::internal::Object, T>(handle);
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return true;
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}
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return false;
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}
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// Implementations of ToLocal
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#define MAKE_TO_LOCAL(Name, From, To) \
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Local<v8::To> Utils::Name(v8::internal::Handle<v8::internal::From> obj) { \
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return Convert<v8::internal::From, v8::To>(obj); \
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}
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#define MAKE_TO_LOCAL_TYPED_ARRAY(Type, typeName, TYPE, ctype, size) \
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Local<v8::Type##Array> Utils::ToLocal##Type##Array( \
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v8::internal::Handle<v8::internal::JSTypedArray> obj) { \
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DCHECK(obj->type() == v8::internal::kExternal##Type##Array); \
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return Convert<v8::internal::JSTypedArray, v8::Type##Array>(obj); \
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}
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MAKE_TO_LOCAL(ToLocal, Context, Context)
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MAKE_TO_LOCAL(ToLocal, Object, Value)
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MAKE_TO_LOCAL(ToLocal, Name, Name)
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MAKE_TO_LOCAL(ToLocal, String, String)
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MAKE_TO_LOCAL(ToLocal, Symbol, Symbol)
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MAKE_TO_LOCAL(ToLocal, JSRegExp, RegExp)
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MAKE_TO_LOCAL(ToLocal, JSReceiver, Object)
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MAKE_TO_LOCAL(ToLocal, JSObject, Object)
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MAKE_TO_LOCAL(ToLocal, JSArray, Array)
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MAKE_TO_LOCAL(ToLocal, JSMap, Map)
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MAKE_TO_LOCAL(ToLocal, JSSet, Set)
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MAKE_TO_LOCAL(ToLocal, JSProxy, Proxy)
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MAKE_TO_LOCAL(ToLocal, JSArrayBuffer, ArrayBuffer)
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MAKE_TO_LOCAL(ToLocal, JSArrayBufferView, ArrayBufferView)
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MAKE_TO_LOCAL(ToLocal, JSDataView, DataView)
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MAKE_TO_LOCAL(ToLocal, JSTypedArray, TypedArray)
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MAKE_TO_LOCAL(ToLocalShared, JSArrayBuffer, SharedArrayBuffer)
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TYPED_ARRAYS(MAKE_TO_LOCAL_TYPED_ARRAY)
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MAKE_TO_LOCAL(ToLocal, FunctionTemplateInfo, FunctionTemplate)
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MAKE_TO_LOCAL(ToLocal, ObjectTemplateInfo, ObjectTemplate)
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MAKE_TO_LOCAL(SignatureToLocal, FunctionTemplateInfo, Signature)
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MAKE_TO_LOCAL(AccessorSignatureToLocal, FunctionTemplateInfo, AccessorSignature)
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MAKE_TO_LOCAL(MessageToLocal, Object, Message)
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MAKE_TO_LOCAL(PromiseToLocal, JSObject, Promise)
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MAKE_TO_LOCAL(StackTraceToLocal, JSArray, StackTrace)
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MAKE_TO_LOCAL(StackFrameToLocal, JSObject, StackFrame)
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MAKE_TO_LOCAL(NumberToLocal, Object, Number)
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MAKE_TO_LOCAL(IntegerToLocal, Object, Integer)
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MAKE_TO_LOCAL(Uint32ToLocal, Object, Uint32)
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MAKE_TO_LOCAL(ExternalToLocal, JSObject, External)
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MAKE_TO_LOCAL(NativeWeakMapToLocal, JSWeakMap, NativeWeakMap)
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MAKE_TO_LOCAL(CallableToLocal, JSReceiver, Function)
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#undef MAKE_TO_LOCAL_TYPED_ARRAY
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#undef MAKE_TO_LOCAL
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// Implementations of OpenHandle
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#define MAKE_OPEN_HANDLE(From, To) \
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v8::internal::Handle<v8::internal::To> Utils::OpenHandle( \
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const v8::From* that, bool allow_empty_handle) { \
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DCHECK(allow_empty_handle || that != NULL); \
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DCHECK(that == NULL || \
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(*reinterpret_cast<v8::internal::Object* const*>(that))->Is##To()); \
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return v8::internal::Handle<v8::internal::To>( \
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reinterpret_cast<v8::internal::To**>(const_cast<v8::From*>(that))); \
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}
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OPEN_HANDLE_LIST(MAKE_OPEN_HANDLE)
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#undef MAKE_OPEN_HANDLE
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#undef OPEN_HANDLE_LIST
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namespace internal {
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class DeferredHandles {
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public:
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~DeferredHandles();
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private:
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DeferredHandles(Object** first_block_limit, Isolate* isolate)
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: next_(NULL),
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previous_(NULL),
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first_block_limit_(first_block_limit),
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isolate_(isolate) {
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isolate->LinkDeferredHandles(this);
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}
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void Iterate(ObjectVisitor* v);
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List<Object**> blocks_;
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DeferredHandles* next_;
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DeferredHandles* previous_;
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Object** first_block_limit_;
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Isolate* isolate_;
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friend class HandleScopeImplementer;
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friend class Isolate;
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};
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// This class is here in order to be able to declare it a friend of
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// HandleScope. Moving these methods to be members of HandleScope would be
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// neat in some ways, but it would expose internal implementation details in
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// our public header file, which is undesirable.
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//
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// An isolate has a single instance of this class to hold the current thread's
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// data. In multithreaded V8 programs this data is copied in and out of storage
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// so that the currently executing thread always has its own copy of this
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// data.
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class HandleScopeImplementer {
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public:
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explicit HandleScopeImplementer(Isolate* isolate)
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: isolate_(isolate),
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blocks_(0),
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entered_contexts_(0),
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saved_contexts_(0),
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spare_(NULL),
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call_depth_(0),
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microtasks_depth_(0),
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microtasks_suppressions_(0),
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#ifdef DEBUG
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debug_microtasks_depth_(0),
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#endif
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microtasks_policy_(v8::MicrotasksPolicy::kAuto),
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last_handle_before_deferred_block_(NULL) { }
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~HandleScopeImplementer() {
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DeleteArray(spare_);
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}
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// Threading support for handle data.
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static int ArchiveSpacePerThread();
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char* RestoreThread(char* from);
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char* ArchiveThread(char* to);
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void FreeThreadResources();
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// Garbage collection support.
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void Iterate(v8::internal::ObjectVisitor* v);
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static char* Iterate(v8::internal::ObjectVisitor* v, char* data);
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inline internal::Object** GetSpareOrNewBlock();
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inline void DeleteExtensions(internal::Object** prev_limit);
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// Call depth represents nested v8 api calls.
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inline void IncrementCallDepth() {call_depth_++;}
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inline void DecrementCallDepth() {call_depth_--;}
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inline bool CallDepthIsZero() { return call_depth_ == 0; }
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// Microtasks scope depth represents nested scopes controlling microtasks
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// invocation, which happens when depth reaches zero.
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inline void IncrementMicrotasksScopeDepth() {microtasks_depth_++;}
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inline void DecrementMicrotasksScopeDepth() {microtasks_depth_--;}
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inline int GetMicrotasksScopeDepth() { return microtasks_depth_; }
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// Possibly nested microtasks suppression scopes prevent microtasks
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// from running.
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inline void IncrementMicrotasksSuppressions() {microtasks_suppressions_++;}
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inline void DecrementMicrotasksSuppressions() {microtasks_suppressions_--;}
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inline bool HasMicrotasksSuppressions() { return !!microtasks_suppressions_; }
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#ifdef DEBUG
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// In debug we check that calls not intended to invoke microtasks are
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// still correctly wrapped with microtask scopes.
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inline void IncrementDebugMicrotasksScopeDepth() {debug_microtasks_depth_++;}
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inline void DecrementDebugMicrotasksScopeDepth() {debug_microtasks_depth_--;}
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inline bool DebugMicrotasksScopeDepthIsZero() {
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return debug_microtasks_depth_ == 0;
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}
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#endif
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inline void set_microtasks_policy(v8::MicrotasksPolicy policy);
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inline v8::MicrotasksPolicy microtasks_policy() const;
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inline void EnterContext(Handle<Context> context);
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inline void LeaveContext();
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inline bool LastEnteredContextWas(Handle<Context> context);
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// Returns the last entered context or an empty handle if no
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// contexts have been entered.
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inline Handle<Context> LastEnteredContext();
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inline void SaveContext(Context* context);
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inline Context* RestoreContext();
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inline bool HasSavedContexts();
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inline List<internal::Object**>* blocks() { return &blocks_; }
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Isolate* isolate() const { return isolate_; }
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void ReturnBlock(Object** block) {
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DCHECK(block != NULL);
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if (spare_ != NULL) DeleteArray(spare_);
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spare_ = block;
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}
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private:
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void ResetAfterArchive() {
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blocks_.Initialize(0);
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entered_contexts_.Initialize(0);
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saved_contexts_.Initialize(0);
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spare_ = NULL;
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last_handle_before_deferred_block_ = NULL;
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call_depth_ = 0;
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}
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void Free() {
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DCHECK(blocks_.length() == 0);
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DCHECK(entered_contexts_.length() == 0);
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DCHECK(saved_contexts_.length() == 0);
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blocks_.Free();
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entered_contexts_.Free();
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saved_contexts_.Free();
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if (spare_ != NULL) {
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DeleteArray(spare_);
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spare_ = NULL;
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}
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DCHECK(call_depth_ == 0);
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}
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void BeginDeferredScope();
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DeferredHandles* Detach(Object** prev_limit);
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Isolate* isolate_;
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List<internal::Object**> blocks_;
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// Used as a stack to keep track of entered contexts.
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List<Context*> entered_contexts_;
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// Used as a stack to keep track of saved contexts.
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List<Context*> saved_contexts_;
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Object** spare_;
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int call_depth_;
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int microtasks_depth_;
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int microtasks_suppressions_;
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#ifdef DEBUG
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int debug_microtasks_depth_;
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#endif
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v8::MicrotasksPolicy microtasks_policy_;
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Object** last_handle_before_deferred_block_;
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// This is only used for threading support.
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HandleScopeData handle_scope_data_;
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void IterateThis(ObjectVisitor* v);
|
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char* RestoreThreadHelper(char* from);
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char* ArchiveThreadHelper(char* to);
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friend class DeferredHandles;
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friend class DeferredHandleScope;
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DISALLOW_COPY_AND_ASSIGN(HandleScopeImplementer);
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};
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|
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const int kHandleBlockSize = v8::internal::KB - 2; // fit in one page
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|
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void HandleScopeImplementer::set_microtasks_policy(
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v8::MicrotasksPolicy policy) {
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microtasks_policy_ = policy;
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}
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|
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v8::MicrotasksPolicy HandleScopeImplementer::microtasks_policy() const {
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return microtasks_policy_;
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}
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|
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void HandleScopeImplementer::SaveContext(Context* context) {
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saved_contexts_.Add(context);
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}
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|
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Context* HandleScopeImplementer::RestoreContext() {
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return saved_contexts_.RemoveLast();
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}
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|
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bool HandleScopeImplementer::HasSavedContexts() {
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return !saved_contexts_.is_empty();
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}
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|
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void HandleScopeImplementer::EnterContext(Handle<Context> context) {
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entered_contexts_.Add(*context);
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}
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|
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void HandleScopeImplementer::LeaveContext() {
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entered_contexts_.RemoveLast();
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}
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|
|
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bool HandleScopeImplementer::LastEnteredContextWas(Handle<Context> context) {
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return !entered_contexts_.is_empty() && entered_contexts_.last() == *context;
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}
|
|
|
|
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Handle<Context> HandleScopeImplementer::LastEnteredContext() {
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if (entered_contexts_.is_empty()) return Handle<Context>::null();
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return Handle<Context>(entered_contexts_.last());
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}
|
|
|
|
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// If there's a spare block, use it for growing the current scope.
|
|
internal::Object** HandleScopeImplementer::GetSpareOrNewBlock() {
|
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internal::Object** block = (spare_ != NULL) ?
|
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spare_ :
|
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NewArray<internal::Object*>(kHandleBlockSize);
|
|
spare_ = NULL;
|
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return block;
|
|
}
|
|
|
|
|
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void HandleScopeImplementer::DeleteExtensions(internal::Object** prev_limit) {
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while (!blocks_.is_empty()) {
|
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internal::Object** block_start = blocks_.last();
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internal::Object** block_limit = block_start + kHandleBlockSize;
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|
|
// SealHandleScope may make the prev_limit to point inside the block.
|
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if (block_start <= prev_limit && prev_limit <= block_limit) {
|
|
#ifdef ENABLE_HANDLE_ZAPPING
|
|
internal::HandleScope::ZapRange(prev_limit, block_limit);
|
|
#endif
|
|
break;
|
|
}
|
|
|
|
blocks_.RemoveLast();
|
|
#ifdef ENABLE_HANDLE_ZAPPING
|
|
internal::HandleScope::ZapRange(block_start, block_limit);
|
|
#endif
|
|
if (spare_ != NULL) {
|
|
DeleteArray(spare_);
|
|
}
|
|
spare_ = block_start;
|
|
}
|
|
DCHECK((blocks_.is_empty() && prev_limit == NULL) ||
|
|
(!blocks_.is_empty() && prev_limit != NULL));
|
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}
|
|
|
|
|
|
// Interceptor functions called from generated inline caches to notify
|
|
// CPU profiler that external callbacks are invoked.
|
|
void InvokeAccessorGetterCallback(
|
|
v8::Local<v8::Name> property,
|
|
const v8::PropertyCallbackInfo<v8::Value>& info,
|
|
v8::AccessorNameGetterCallback getter);
|
|
|
|
void InvokeFunctionCallback(const v8::FunctionCallbackInfo<v8::Value>& info,
|
|
v8::FunctionCallback callback);
|
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|
|
class Testing {
|
|
public:
|
|
static v8::Testing::StressType stress_type() { return stress_type_; }
|
|
static void set_stress_type(v8::Testing::StressType stress_type) {
|
|
stress_type_ = stress_type;
|
|
}
|
|
|
|
private:
|
|
static v8::Testing::StressType stress_type_;
|
|
};
|
|
|
|
} // namespace internal
|
|
} // namespace v8
|
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|
#endif // V8_API_H_
|