Update V8 to r7427: Initial merge by git
As required by WebKit r82507
Change-Id: I7ae83ef3f689356043b4929255b7c1dd31d8c5df
diff --git a/src/isolate.h b/src/isolate.h
new file mode 100644
index 0000000..03a4866
--- /dev/null
+++ b/src/isolate.h
@@ -0,0 +1,1308 @@
+// Copyright 2010 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_ISOLATE_H_
+#define V8_ISOLATE_H_
+
+#include "../include/v8-debug.h"
+#include "allocation.h"
+#include "apiutils.h"
+#include "atomicops.h"
+#include "builtins.h"
+#include "contexts.h"
+#include "execution.h"
+#include "frames.h"
+#include "global-handles.h"
+#include "handles.h"
+#include "heap.h"
+#include "regexp-stack.h"
+#include "runtime-profiler.h"
+#include "runtime.h"
+#include "zone.h"
+
+namespace v8 {
+namespace internal {
+
+class AstSentinels;
+class Bootstrapper;
+class CodeGenerator;
+class CodeRange;
+class CompilationCache;
+class ContextSlotCache;
+class ContextSwitcher;
+class Counters;
+class CpuFeatures;
+class CpuProfiler;
+class DeoptimizerData;
+class Deserializer;
+class EmptyStatement;
+class ExternalReferenceTable;
+class Factory;
+class FunctionInfoListener;
+class HandleScopeImplementer;
+class HeapProfiler;
+class InlineRuntimeFunctionsTable;
+class NoAllocationStringAllocator;
+class PcToCodeCache;
+class PreallocatedMemoryThread;
+class ProducerHeapProfile;
+class RegExpStack;
+class SaveContext;
+class ScannerConstants;
+class StringInputBuffer;
+class StringTracker;
+class StubCache;
+class ThreadManager;
+class ThreadState;
+class ThreadVisitor; // Defined in v8threads.h
+class VMState;
+
+// 'void function pointer', used to roundtrip the
+// ExternalReference::ExternalReferenceRedirector since we can not include
+// assembler.h, where it is defined, here.
+typedef void* ExternalReferenceRedirectorPointer();
+
+
+#ifdef ENABLE_DEBUGGER_SUPPORT
+class Debug;
+class Debugger;
+class DebuggerAgent;
+#endif
+
+#if !defined(__arm__) && defined(V8_TARGET_ARCH_ARM) || \
+ !defined(__mips__) && defined(V8_TARGET_ARCH_MIPS)
+class Redirection;
+class Simulator;
+#endif
+
+
+// Static indirection table for handles to constants. If a frame
+// element represents a constant, the data contains an index into
+// this table of handles to the actual constants.
+// Static indirection table for handles to constants. If a Result
+// represents a constant, the data contains an index into this table
+// of handles to the actual constants.
+typedef ZoneList<Handle<Object> > ZoneObjectList;
+
+#define RETURN_IF_SCHEDULED_EXCEPTION(isolate) \
+ if (isolate->has_scheduled_exception()) \
+ return isolate->PromoteScheduledException()
+
+#define RETURN_IF_EMPTY_HANDLE_VALUE(isolate, call, value) \
+ if (call.is_null()) { \
+ ASSERT(isolate->has_pending_exception()); \
+ return value; \
+ }
+
+#define RETURN_IF_EMPTY_HANDLE(isolate, call) \
+ RETURN_IF_EMPTY_HANDLE_VALUE(isolate, call, Failure::Exception())
+
+#define ISOLATE_ADDRESS_LIST(C) \
+ C(handler_address) \
+ C(c_entry_fp_address) \
+ C(context_address) \
+ C(pending_exception_address) \
+ C(external_caught_exception_address)
+
+#ifdef ENABLE_LOGGING_AND_PROFILING
+#define ISOLATE_ADDRESS_LIST_PROF(C) \
+ C(js_entry_sp_address)
+#else
+#define ISOLATE_ADDRESS_LIST_PROF(C)
+#endif
+
+
+class ThreadLocalTop BASE_EMBEDDED {
+ public:
+ // Initialize the thread data.
+ void Initialize();
+
+ // Get the top C++ try catch handler or NULL if none are registered.
+ //
+ // This method is not guarenteed to return an address that can be
+ // used for comparison with addresses into the JS stack. If such an
+ // address is needed, use try_catch_handler_address.
+ v8::TryCatch* TryCatchHandler();
+
+ // Get the address of the top C++ try catch handler or NULL if
+ // none are registered.
+ //
+ // This method always returns an address that can be compared to
+ // pointers into the JavaScript stack. When running on actual
+ // hardware, try_catch_handler_address and TryCatchHandler return
+ // the same pointer. When running on a simulator with a separate JS
+ // stack, try_catch_handler_address returns a JS stack address that
+ // corresponds to the place on the JS stack where the C++ handler
+ // would have been if the stack were not separate.
+ inline Address try_catch_handler_address() {
+ return try_catch_handler_address_;
+ }
+
+ // Set the address of the top C++ try catch handler.
+ inline void set_try_catch_handler_address(Address address) {
+ try_catch_handler_address_ = address;
+ }
+
+ void Free() {
+ ASSERT(!has_pending_message_);
+ ASSERT(!external_caught_exception_);
+ ASSERT(try_catch_handler_address_ == NULL);
+ }
+
+ // The context where the current execution method is created and for variable
+ // lookups.
+ Context* context_;
+ int thread_id_;
+ MaybeObject* pending_exception_;
+ bool has_pending_message_;
+ const char* pending_message_;
+ Object* pending_message_obj_;
+ Script* pending_message_script_;
+ int pending_message_start_pos_;
+ int pending_message_end_pos_;
+ // Use a separate value for scheduled exceptions to preserve the
+ // invariants that hold about pending_exception. We may want to
+ // unify them later.
+ MaybeObject* scheduled_exception_;
+ bool external_caught_exception_;
+ SaveContext* save_context_;
+ v8::TryCatch* catcher_;
+
+ // Stack.
+ Address c_entry_fp_; // the frame pointer of the top c entry frame
+ Address handler_; // try-blocks are chained through the stack
+
+#ifdef USE_SIMULATOR
+#if defined(V8_TARGET_ARCH_ARM) || defined(V8_TARGET_ARCH_MIPS)
+ Simulator* simulator_;
+#endif
+#endif // USE_SIMULATOR
+
+#ifdef ENABLE_LOGGING_AND_PROFILING
+ Address js_entry_sp_; // the stack pointer of the bottom js entry frame
+ Address external_callback_; // the external callback we're currently in
+#endif
+
+#ifdef ENABLE_VMSTATE_TRACKING
+ StateTag current_vm_state_;
+#endif
+
+ // Generated code scratch locations.
+ int32_t formal_count_;
+
+ // Call back function to report unsafe JS accesses.
+ v8::FailedAccessCheckCallback failed_access_check_callback_;
+
+ private:
+ Address try_catch_handler_address_;
+};
+
+#if defined(V8_TARGET_ARCH_ARM) || defined(V8_TARGET_ARCH_MIPS)
+
+#define ISOLATE_PLATFORM_INIT_LIST(V) \
+ /* VirtualFrame::SpilledScope state */ \
+ V(bool, is_virtual_frame_in_spilled_scope, false) \
+ /* CodeGenerator::EmitNamedStore state */ \
+ V(int, inlined_write_barrier_size, -1)
+
+#if !defined(__arm__) && !defined(__mips__)
+class HashMap;
+#endif
+
+#else
+
+#define ISOLATE_PLATFORM_INIT_LIST(V)
+
+#endif
+
+#ifdef ENABLE_DEBUGGER_SUPPORT
+
+#define ISOLATE_DEBUGGER_INIT_LIST(V) \
+ V(v8::Debug::EventCallback, debug_event_callback, NULL) \
+ V(DebuggerAgent*, debugger_agent_instance, NULL)
+#else
+
+#define ISOLATE_DEBUGGER_INIT_LIST(V)
+
+#endif
+
+#ifdef DEBUG
+
+#define ISOLATE_INIT_DEBUG_ARRAY_LIST(V) \
+ V(CommentStatistic, paged_space_comments_statistics, \
+ CommentStatistic::kMaxComments + 1)
+#else
+
+#define ISOLATE_INIT_DEBUG_ARRAY_LIST(V)
+
+#endif
+
+#ifdef ENABLE_LOGGING_AND_PROFILING
+
+#define ISOLATE_LOGGING_INIT_LIST(V) \
+ V(CpuProfiler*, cpu_profiler, NULL) \
+ V(HeapProfiler*, heap_profiler, NULL)
+
+#else
+
+#define ISOLATE_LOGGING_INIT_LIST(V)
+
+#endif
+
+#define ISOLATE_INIT_ARRAY_LIST(V) \
+ /* SerializerDeserializer state. */ \
+ V(Object*, serialize_partial_snapshot_cache, kPartialSnapshotCacheCapacity) \
+ V(int, jsregexp_static_offsets_vector, kJSRegexpStaticOffsetsVectorSize) \
+ V(int, bad_char_shift_table, kUC16AlphabetSize) \
+ V(int, good_suffix_shift_table, (kBMMaxShift + 1)) \
+ V(int, suffix_table, (kBMMaxShift + 1)) \
+ ISOLATE_INIT_DEBUG_ARRAY_LIST(V)
+
+typedef List<HeapObject*, PreallocatedStorage> DebugObjectCache;
+
+#define ISOLATE_INIT_LIST(V) \
+ /* AssertNoZoneAllocation state. */ \
+ V(bool, zone_allow_allocation, true) \
+ /* SerializerDeserializer state. */ \
+ V(int, serialize_partial_snapshot_cache_length, 0) \
+ /* Assembler state. */ \
+ /* A previously allocated buffer of kMinimalBufferSize bytes, or NULL. */ \
+ V(byte*, assembler_spare_buffer, NULL) \
+ V(FatalErrorCallback, exception_behavior, NULL) \
+ V(v8::Debug::MessageHandler, message_handler, NULL) \
+ /* To distinguish the function templates, so that we can find them in the */ \
+ /* function cache of the global context. */ \
+ V(int, next_serial_number, 0) \
+ V(ExternalReferenceRedirectorPointer*, external_reference_redirector, NULL) \
+ V(bool, always_allow_natives_syntax, false) \
+ /* Part of the state of liveedit. */ \
+ V(FunctionInfoListener*, active_function_info_listener, NULL) \
+ /* State for Relocatable. */ \
+ V(Relocatable*, relocatable_top, NULL) \
+ /* State for CodeEntry in profile-generator. */ \
+ V(CodeGenerator*, current_code_generator, NULL) \
+ V(bool, jump_target_compiling_deferred_code, false) \
+ V(DebugObjectCache*, string_stream_debug_object_cache, NULL) \
+ V(Object*, string_stream_current_security_token, NULL) \
+ /* TODO(isolates): Release this on destruction? */ \
+ V(int*, irregexp_interpreter_backtrack_stack_cache, NULL) \
+ /* Serializer state. */ \
+ V(ExternalReferenceTable*, external_reference_table, NULL) \
+ /* AstNode state. */ \
+ V(unsigned, ast_node_id, 0) \
+ V(unsigned, ast_node_count, 0) \
+ ISOLATE_PLATFORM_INIT_LIST(V) \
+ ISOLATE_LOGGING_INIT_LIST(V) \
+ ISOLATE_DEBUGGER_INIT_LIST(V)
+
+class Isolate {
+ // These forward declarations are required to make the friend declarations in
+ // PerIsolateThreadData work on some older versions of gcc.
+ class ThreadDataTable;
+ class EntryStackItem;
+ public:
+ ~Isolate();
+
+ typedef int ThreadId;
+
+ // A thread has a PerIsolateThreadData instance for each isolate that it has
+ // entered. That instance is allocated when the isolate is initially entered
+ // and reused on subsequent entries.
+ class PerIsolateThreadData {
+ public:
+ PerIsolateThreadData(Isolate* isolate, ThreadId thread_id)
+ : isolate_(isolate),
+ thread_id_(thread_id),
+ stack_limit_(0),
+ thread_state_(NULL),
+#if !defined(__arm__) && defined(V8_TARGET_ARCH_ARM) || \
+ !defined(__mips__) && defined(V8_TARGET_ARCH_MIPS)
+ simulator_(NULL),
+#endif
+ next_(NULL),
+ prev_(NULL) { }
+ Isolate* isolate() const { return isolate_; }
+ ThreadId thread_id() const { return thread_id_; }
+ void set_stack_limit(uintptr_t value) { stack_limit_ = value; }
+ uintptr_t stack_limit() const { return stack_limit_; }
+ ThreadState* thread_state() const { return thread_state_; }
+ void set_thread_state(ThreadState* value) { thread_state_ = value; }
+
+#if !defined(__arm__) && defined(V8_TARGET_ARCH_ARM) || \
+ !defined(__mips__) && defined(V8_TARGET_ARCH_MIPS)
+ Simulator* simulator() const { return simulator_; }
+ void set_simulator(Simulator* simulator) {
+ simulator_ = simulator;
+ }
+#endif
+
+ bool Matches(Isolate* isolate, ThreadId thread_id) const {
+ return isolate_ == isolate && thread_id_ == thread_id;
+ }
+
+ private:
+ Isolate* isolate_;
+ ThreadId thread_id_;
+ uintptr_t stack_limit_;
+ ThreadState* thread_state_;
+
+#if !defined(__arm__) && defined(V8_TARGET_ARCH_ARM) || \
+ !defined(__mips__) && defined(V8_TARGET_ARCH_MIPS)
+ Simulator* simulator_;
+#endif
+
+ PerIsolateThreadData* next_;
+ PerIsolateThreadData* prev_;
+
+ friend class Isolate;
+ friend class ThreadDataTable;
+ friend class EntryStackItem;
+
+ DISALLOW_COPY_AND_ASSIGN(PerIsolateThreadData);
+ };
+
+
+ enum AddressId {
+#define C(name) k_##name,
+ ISOLATE_ADDRESS_LIST(C)
+ ISOLATE_ADDRESS_LIST_PROF(C)
+#undef C
+ k_isolate_address_count
+ };
+
+ // Returns the PerIsolateThreadData for the current thread (or NULL if one is
+ // not currently set).
+ static PerIsolateThreadData* CurrentPerIsolateThreadData() {
+ return reinterpret_cast<PerIsolateThreadData*>(
+ Thread::GetThreadLocal(per_isolate_thread_data_key_));
+ }
+
+ // Returns the isolate inside which the current thread is running.
+ INLINE(static Isolate* Current()) {
+ Isolate* isolate = reinterpret_cast<Isolate*>(
+ Thread::GetExistingThreadLocal(isolate_key_));
+ ASSERT(isolate != NULL);
+ return isolate;
+ }
+
+ INLINE(static Isolate* UncheckedCurrent()) {
+ return reinterpret_cast<Isolate*>(Thread::GetThreadLocal(isolate_key_));
+ }
+
+ bool Init(Deserializer* des);
+
+ bool IsInitialized() { return state_ == INITIALIZED; }
+
+ // True if at least one thread Enter'ed this isolate.
+ bool IsInUse() { return entry_stack_ != NULL; }
+
+ // Destroys the non-default isolates.
+ // Sets default isolate into "has_been_disposed" state rather then destroying,
+ // for legacy API reasons.
+ void TearDown();
+
+ bool IsDefaultIsolate() const { return this == default_isolate_; }
+
+ // Ensures that process-wide resources and the default isolate have been
+ // allocated. It is only necessary to call this method in rare casses, for
+ // example if you are using V8 from within the body of a static initializer.
+ // Safe to call multiple times.
+ static void EnsureDefaultIsolate();
+
+ // Get the debugger from the default isolate. Preinitializes the
+ // default isolate if needed.
+ static Debugger* GetDefaultIsolateDebugger();
+
+ // Get the stack guard from the default isolate. Preinitializes the
+ // default isolate if needed.
+ static StackGuard* GetDefaultIsolateStackGuard();
+
+ // Returns the key used to store the pointer to the current isolate.
+ // Used internally for V8 threads that do not execute JavaScript but still
+ // are part of the domain of an isolate (like the context switcher).
+ static Thread::LocalStorageKey isolate_key() {
+ return isolate_key_;
+ }
+
+ // Returns the key used to store process-wide thread IDs.
+ static Thread::LocalStorageKey thread_id_key() {
+ return thread_id_key_;
+ }
+
+ // Atomically allocates a new thread ID.
+ static ThreadId AllocateThreadId();
+
+ // If a client attempts to create a Locker without specifying an isolate,
+ // we assume that the client is using legacy behavior. Set up the current
+ // thread to be inside the implicit isolate (or fail a check if we have
+ // switched to non-legacy behavior).
+ static void EnterDefaultIsolate();
+
+ // Debug.
+ // Mutex for serializing access to break control structures.
+ Mutex* break_access() { return break_access_; }
+
+ Address get_address_from_id(AddressId id);
+
+ // Access to top context (where the current function object was created).
+ Context* context() { return thread_local_top_.context_; }
+ void set_context(Context* context) {
+ thread_local_top_.context_ = context;
+ }
+ Context** context_address() { return &thread_local_top_.context_; }
+
+ SaveContext* save_context() {return thread_local_top_.save_context_; }
+ void set_save_context(SaveContext* save) {
+ thread_local_top_.save_context_ = save;
+ }
+
+ // Access to current thread id.
+ int thread_id() { return thread_local_top_.thread_id_; }
+ void set_thread_id(int id) { thread_local_top_.thread_id_ = id; }
+
+ // Interface to pending exception.
+ MaybeObject* pending_exception() {
+ ASSERT(has_pending_exception());
+ return thread_local_top_.pending_exception_;
+ }
+ bool external_caught_exception() {
+ return thread_local_top_.external_caught_exception_;
+ }
+ void set_pending_exception(MaybeObject* exception) {
+ thread_local_top_.pending_exception_ = exception;
+ }
+ void clear_pending_exception() {
+ thread_local_top_.pending_exception_ = heap_.the_hole_value();
+ }
+ MaybeObject** pending_exception_address() {
+ return &thread_local_top_.pending_exception_;
+ }
+ bool has_pending_exception() {
+ return !thread_local_top_.pending_exception_->IsTheHole();
+ }
+ void clear_pending_message() {
+ thread_local_top_.has_pending_message_ = false;
+ thread_local_top_.pending_message_ = NULL;
+ thread_local_top_.pending_message_obj_ = heap_.the_hole_value();
+ thread_local_top_.pending_message_script_ = NULL;
+ }
+ v8::TryCatch* try_catch_handler() {
+ return thread_local_top_.TryCatchHandler();
+ }
+ Address try_catch_handler_address() {
+ return thread_local_top_.try_catch_handler_address();
+ }
+ bool* external_caught_exception_address() {
+ return &thread_local_top_.external_caught_exception_;
+ }
+
+ MaybeObject** scheduled_exception_address() {
+ return &thread_local_top_.scheduled_exception_;
+ }
+ MaybeObject* scheduled_exception() {
+ ASSERT(has_scheduled_exception());
+ return thread_local_top_.scheduled_exception_;
+ }
+ bool has_scheduled_exception() {
+ return !thread_local_top_.scheduled_exception_->IsTheHole();
+ }
+ void clear_scheduled_exception() {
+ thread_local_top_.scheduled_exception_ = heap_.the_hole_value();
+ }
+
+ bool IsExternallyCaught();
+
+ bool is_catchable_by_javascript(MaybeObject* exception) {
+ return (exception != Failure::OutOfMemoryException()) &&
+ (exception != heap()->termination_exception());
+ }
+
+ // JS execution stack (see frames.h).
+ static Address c_entry_fp(ThreadLocalTop* thread) {
+ return thread->c_entry_fp_;
+ }
+ static Address handler(ThreadLocalTop* thread) { return thread->handler_; }
+
+ inline Address* c_entry_fp_address() {
+ return &thread_local_top_.c_entry_fp_;
+ }
+ inline Address* handler_address() { return &thread_local_top_.handler_; }
+
+#ifdef ENABLE_LOGGING_AND_PROFILING
+ // Bottom JS entry (see StackTracer::Trace in log.cc).
+ static Address js_entry_sp(ThreadLocalTop* thread) {
+ return thread->js_entry_sp_;
+ }
+ inline Address* js_entry_sp_address() {
+ return &thread_local_top_.js_entry_sp_;
+ }
+#endif
+
+ // Generated code scratch locations.
+ void* formal_count_address() { return &thread_local_top_.formal_count_; }
+
+ // Returns the global object of the current context. It could be
+ // a builtin object, or a js global object.
+ Handle<GlobalObject> global() {
+ return Handle<GlobalObject>(context()->global());
+ }
+
+ // Returns the global proxy object of the current context.
+ Object* global_proxy() {
+ return context()->global_proxy();
+ }
+
+ Handle<JSBuiltinsObject> js_builtins_object() {
+ return Handle<JSBuiltinsObject>(thread_local_top_.context_->builtins());
+ }
+
+ static int ArchiveSpacePerThread() { return sizeof(ThreadLocalTop); }
+ void FreeThreadResources() { thread_local_top_.Free(); }
+
+ // This method is called by the api after operations that may throw
+ // exceptions. If an exception was thrown and not handled by an external
+ // handler the exception is scheduled to be rethrown when we return to running
+ // JavaScript code. If an exception is scheduled true is returned.
+ bool OptionalRescheduleException(bool is_bottom_call);
+
+ void SetCaptureStackTraceForUncaughtExceptions(
+ bool capture,
+ int frame_limit,
+ StackTrace::StackTraceOptions options);
+
+ // Tells whether the current context has experienced an out of memory
+ // exception.
+ bool is_out_of_memory();
+
+ void PrintCurrentStackTrace(FILE* out);
+ void PrintStackTrace(FILE* out, char* thread_data);
+ void PrintStack(StringStream* accumulator);
+ void PrintStack();
+ Handle<String> StackTraceString();
+ Handle<JSArray> CaptureCurrentStackTrace(
+ int frame_limit,
+ StackTrace::StackTraceOptions options);
+
+ // Returns if the top context may access the given global object. If
+ // the result is false, the pending exception is guaranteed to be
+ // set.
+ bool MayNamedAccess(JSObject* receiver,
+ Object* key,
+ v8::AccessType type);
+ bool MayIndexedAccess(JSObject* receiver,
+ uint32_t index,
+ v8::AccessType type);
+
+ void SetFailedAccessCheckCallback(v8::FailedAccessCheckCallback callback);
+ void ReportFailedAccessCheck(JSObject* receiver, v8::AccessType type);
+
+ // Exception throwing support. The caller should use the result
+ // of Throw() as its return value.
+ Failure* Throw(Object* exception, MessageLocation* location = NULL);
+ // Re-throw an exception. This involves no error reporting since
+ // error reporting was handled when the exception was thrown
+ // originally.
+ Failure* ReThrow(MaybeObject* exception, MessageLocation* location = NULL);
+ void ScheduleThrow(Object* exception);
+ void ReportPendingMessages();
+ Failure* ThrowIllegalOperation();
+
+ // Promote a scheduled exception to pending. Asserts has_scheduled_exception.
+ Failure* PromoteScheduledException();
+ void DoThrow(MaybeObject* exception,
+ MessageLocation* location,
+ const char* message);
+ // Checks if exception should be reported and finds out if it's
+ // caught externally.
+ bool ShouldReportException(bool* can_be_caught_externally,
+ bool catchable_by_javascript);
+
+ // Attempts to compute the current source location, storing the
+ // result in the target out parameter.
+ void ComputeLocation(MessageLocation* target);
+
+ // Override command line flag.
+ void TraceException(bool flag);
+
+ // Out of resource exception helpers.
+ Failure* StackOverflow();
+ Failure* TerminateExecution();
+
+ // Administration
+ void Iterate(ObjectVisitor* v);
+ void Iterate(ObjectVisitor* v, ThreadLocalTop* t);
+ char* Iterate(ObjectVisitor* v, char* t);
+ void IterateThread(ThreadVisitor* v);
+ void IterateThread(ThreadVisitor* v, char* t);
+
+
+ // Returns the current global context.
+ Handle<Context> global_context();
+
+ // Returns the global context of the calling JavaScript code. That
+ // is, the global context of the top-most JavaScript frame.
+ Handle<Context> GetCallingGlobalContext();
+
+ void RegisterTryCatchHandler(v8::TryCatch* that);
+ void UnregisterTryCatchHandler(v8::TryCatch* that);
+
+ char* ArchiveThread(char* to);
+ char* RestoreThread(char* from);
+
+ static const char* const kStackOverflowMessage;
+
+ static const int kUC16AlphabetSize = 256; // See StringSearchBase.
+ static const int kBMMaxShift = 250; // See StringSearchBase.
+
+ // Accessors.
+#define GLOBAL_ACCESSOR(type, name, initialvalue) \
+ inline type name() const { \
+ ASSERT(OFFSET_OF(Isolate, name##_) == name##_debug_offset_); \
+ return name##_; \
+ } \
+ inline void set_##name(type value) { \
+ ASSERT(OFFSET_OF(Isolate, name##_) == name##_debug_offset_); \
+ name##_ = value; \
+ }
+ ISOLATE_INIT_LIST(GLOBAL_ACCESSOR)
+#undef GLOBAL_ACCESSOR
+
+#define GLOBAL_ARRAY_ACCESSOR(type, name, length) \
+ inline type* name() { \
+ ASSERT(OFFSET_OF(Isolate, name##_) == name##_debug_offset_); \
+ return &(name##_)[0]; \
+ }
+ ISOLATE_INIT_ARRAY_LIST(GLOBAL_ARRAY_ACCESSOR)
+#undef GLOBAL_ARRAY_ACCESSOR
+
+#define GLOBAL_CONTEXT_FIELD_ACCESSOR(index, type, name) \
+ Handle<type> name() { \
+ return Handle<type>(context()->global_context()->name()); \
+ }
+ GLOBAL_CONTEXT_FIELDS(GLOBAL_CONTEXT_FIELD_ACCESSOR)
+#undef GLOBAL_CONTEXT_FIELD_ACCESSOR
+
+ Bootstrapper* bootstrapper() { return bootstrapper_; }
+ Counters* counters() { return counters_; }
+ // TODO(isolates): Having CPU features per isolate is probably too
+ // flexible. We only really need to have the set of currently
+ // enabled features for asserts in DEBUG builds.
+ CpuFeatures* cpu_features() { return cpu_features_; }
+ CodeRange* code_range() { return code_range_; }
+ RuntimeProfiler* runtime_profiler() { return runtime_profiler_; }
+ CompilationCache* compilation_cache() { return compilation_cache_; }
+ Logger* logger() { return logger_; }
+ StackGuard* stack_guard() { return &stack_guard_; }
+ Heap* heap() { return &heap_; }
+ StatsTable* stats_table() { return stats_table_; }
+ StubCache* stub_cache() { return stub_cache_; }
+ DeoptimizerData* deoptimizer_data() { return deoptimizer_data_; }
+ ThreadLocalTop* thread_local_top() { return &thread_local_top_; }
+
+ TranscendentalCache* transcendental_cache() const {
+ return transcendental_cache_;
+ }
+
+ MemoryAllocator* memory_allocator() {
+ return memory_allocator_;
+ }
+
+ KeyedLookupCache* keyed_lookup_cache() {
+ return keyed_lookup_cache_;
+ }
+
+ ContextSlotCache* context_slot_cache() {
+ return context_slot_cache_;
+ }
+
+ DescriptorLookupCache* descriptor_lookup_cache() {
+ return descriptor_lookup_cache_;
+ }
+
+ v8::ImplementationUtilities::HandleScopeData* handle_scope_data() {
+ return &handle_scope_data_;
+ }
+ HandleScopeImplementer* handle_scope_implementer() {
+ ASSERT(handle_scope_implementer_);
+ return handle_scope_implementer_;
+ }
+ Zone* zone() { return &zone_; }
+
+ ScannerConstants* scanner_constants() {
+ return scanner_constants_;
+ }
+
+ PcToCodeCache* pc_to_code_cache() { return pc_to_code_cache_; }
+
+ StringInputBuffer* write_input_buffer() { return write_input_buffer_; }
+
+ GlobalHandles* global_handles() { return global_handles_; }
+
+ ThreadManager* thread_manager() { return thread_manager_; }
+
+ ContextSwitcher* context_switcher() { return context_switcher_; }
+
+ void set_context_switcher(ContextSwitcher* switcher) {
+ context_switcher_ = switcher;
+ }
+
+ StringTracker* string_tracker() { return string_tracker_; }
+
+ unibrow::Mapping<unibrow::Ecma262UnCanonicalize>* jsregexp_uncanonicalize() {
+ return &jsregexp_uncanonicalize_;
+ }
+
+ unibrow::Mapping<unibrow::CanonicalizationRange>* jsregexp_canonrange() {
+ return &jsregexp_canonrange_;
+ }
+
+ StringInputBuffer* objects_string_compare_buffer_a() {
+ return &objects_string_compare_buffer_a_;
+ }
+
+ StringInputBuffer* objects_string_compare_buffer_b() {
+ return &objects_string_compare_buffer_b_;
+ }
+
+ StaticResource<StringInputBuffer>* objects_string_input_buffer() {
+ return &objects_string_input_buffer_;
+ }
+
+ AstSentinels* ast_sentinels() { return ast_sentinels_; }
+
+ RuntimeState* runtime_state() { return &runtime_state_; }
+
+ StringInputBuffer* liveedit_compare_substrings_buf1() {
+ return &liveedit_compare_substrings_buf1_;
+ }
+
+ StringInputBuffer* liveedit_compare_substrings_buf2() {
+ return &liveedit_compare_substrings_buf2_;
+ }
+
+ StaticResource<SafeStringInputBuffer>* compiler_safe_string_input_buffer() {
+ return &compiler_safe_string_input_buffer_;
+ }
+
+ Builtins* builtins() { return &builtins_; }
+
+ unibrow::Mapping<unibrow::Ecma262Canonicalize>*
+ regexp_macro_assembler_canonicalize() {
+ return ®exp_macro_assembler_canonicalize_;
+ }
+
+ RegExpStack* regexp_stack() { return regexp_stack_; }
+
+ unibrow::Mapping<unibrow::Ecma262Canonicalize>*
+ interp_canonicalize_mapping() {
+ return &interp_canonicalize_mapping_;
+ }
+
+ ZoneObjectList* frame_element_constant_list() {
+ return &frame_element_constant_list_;
+ }
+
+ ZoneObjectList* result_constant_list() {
+ return &result_constant_list_;
+ }
+
+ void* PreallocatedStorageNew(size_t size);
+ void PreallocatedStorageDelete(void* p);
+ void PreallocatedStorageInit(size_t size);
+
+#ifdef ENABLE_DEBUGGER_SUPPORT
+ Debugger* debugger() { return debugger_; }
+ Debug* debug() { return debug_; }
+#endif
+
+#ifdef ENABLE_LOGGING_AND_PROFILING
+ ProducerHeapProfile* producer_heap_profile() {
+ return producer_heap_profile_;
+ }
+#endif
+
+#ifdef DEBUG
+ HistogramInfo* heap_histograms() { return heap_histograms_; }
+
+ JSObject::SpillInformation* js_spill_information() {
+ return &js_spill_information_;
+ }
+
+ int* code_kind_statistics() { return code_kind_statistics_; }
+#endif
+
+#if defined(V8_TARGET_ARCH_ARM) && !defined(__arm__) || \
+ defined(V8_TARGET_ARCH_MIPS) && !defined(__mips__)
+ bool simulator_initialized() { return simulator_initialized_; }
+ void set_simulator_initialized(bool initialized) {
+ simulator_initialized_ = initialized;
+ }
+
+ HashMap* simulator_i_cache() { return simulator_i_cache_; }
+ void set_simulator_i_cache(HashMap* hash_map) {
+ simulator_i_cache_ = hash_map;
+ }
+
+ Redirection* simulator_redirection() {
+ return simulator_redirection_;
+ }
+ void set_simulator_redirection(Redirection* redirection) {
+ simulator_redirection_ = redirection;
+ }
+#endif
+
+ Factory* factory() { return reinterpret_cast<Factory*>(this); }
+
+ // SerializerDeserializer state.
+ static const int kPartialSnapshotCacheCapacity = 1400;
+
+ static const int kJSRegexpStaticOffsetsVectorSize = 50;
+
+#ifdef ENABLE_LOGGING_AND_PROFILING
+ Address external_callback() {
+ return thread_local_top_.external_callback_;
+ }
+ void set_external_callback(Address callback) {
+ thread_local_top_.external_callback_ = callback;
+ }
+#endif
+
+#ifdef ENABLE_VMSTATE_TRACKING
+ StateTag current_vm_state() {
+ return thread_local_top_.current_vm_state_;
+ }
+
+ void SetCurrentVMState(StateTag state) {
+ if (RuntimeProfiler::IsEnabled()) {
+ if (state == JS) {
+ // JS or non-JS -> JS transition.
+ RuntimeProfiler::IsolateEnteredJS(this);
+ } else if (thread_local_top_.current_vm_state_ == JS) {
+ // JS -> non-JS transition.
+ ASSERT(RuntimeProfiler::IsSomeIsolateInJS());
+ RuntimeProfiler::IsolateExitedJS(this);
+ }
+ }
+ thread_local_top_.current_vm_state_ = state;
+ }
+#endif
+
+ void ResetEagerOptimizingData();
+
+ private:
+ Isolate();
+
+ // The per-process lock should be acquired before the ThreadDataTable is
+ // modified.
+ class ThreadDataTable {
+ public:
+ ThreadDataTable();
+ ~ThreadDataTable();
+
+ PerIsolateThreadData* Lookup(Isolate* isolate, ThreadId thread_id);
+ void Insert(PerIsolateThreadData* data);
+ void Remove(Isolate* isolate, ThreadId thread_id);
+ void Remove(PerIsolateThreadData* data);
+
+ private:
+ PerIsolateThreadData* list_;
+ };
+
+ // These items form a stack synchronously with threads Enter'ing and Exit'ing
+ // the Isolate. The top of the stack points to a thread which is currently
+ // running the Isolate. When the stack is empty, the Isolate is considered
+ // not entered by any thread and can be Disposed.
+ // If the same thread enters the Isolate more then once, the entry_count_
+ // is incremented rather then a new item pushed to the stack.
+ class EntryStackItem {
+ public:
+ EntryStackItem(PerIsolateThreadData* previous_thread_data,
+ Isolate* previous_isolate,
+ EntryStackItem* previous_item)
+ : entry_count(1),
+ previous_thread_data(previous_thread_data),
+ previous_isolate(previous_isolate),
+ previous_item(previous_item) { }
+
+ int entry_count;
+ PerIsolateThreadData* previous_thread_data;
+ Isolate* previous_isolate;
+ EntryStackItem* previous_item;
+
+ DISALLOW_COPY_AND_ASSIGN(EntryStackItem);
+ };
+
+ // This mutex protects highest_thread_id_, thread_data_table_ and
+ // default_isolate_.
+ static Mutex* process_wide_mutex_;
+
+ static Thread::LocalStorageKey per_isolate_thread_data_key_;
+ static Thread::LocalStorageKey isolate_key_;
+ static Thread::LocalStorageKey thread_id_key_;
+ static Isolate* default_isolate_;
+ static ThreadDataTable* thread_data_table_;
+ static ThreadId highest_thread_id_;
+
+ bool PreInit();
+
+ void Deinit();
+
+ static void SetIsolateThreadLocals(Isolate* isolate,
+ PerIsolateThreadData* data);
+
+ enum State {
+ UNINITIALIZED, // Some components may not have been allocated.
+ PREINITIALIZED, // Components have been allocated but not initialized.
+ INITIALIZED // All components are fully initialized.
+ };
+
+ State state_;
+ EntryStackItem* entry_stack_;
+
+ // Allocate and insert PerIsolateThreadData into the ThreadDataTable
+ // (regardless of whether such data already exists).
+ PerIsolateThreadData* AllocatePerIsolateThreadData(ThreadId thread_id);
+
+ // Find the PerThread for this particular (isolate, thread) combination.
+ // If one does not yet exist, allocate a new one.
+ PerIsolateThreadData* FindOrAllocatePerThreadDataForThisThread();
+
+ // PreInits and returns a default isolate. Needed when a new thread tries
+ // to create a Locker for the first time (the lock itself is in the isolate).
+ static Isolate* GetDefaultIsolateForLocking();
+
+ // Initializes the current thread to run this Isolate.
+ // Not thread-safe. Multiple threads should not Enter/Exit the same isolate
+ // at the same time, this should be prevented using external locking.
+ void Enter();
+
+ // Exits the current thread. The previosuly entered Isolate is restored
+ // for the thread.
+ // Not thread-safe. Multiple threads should not Enter/Exit the same isolate
+ // at the same time, this should be prevented using external locking.
+ void Exit();
+
+ void PreallocatedMemoryThreadStart();
+ void PreallocatedMemoryThreadStop();
+ void InitializeThreadLocal();
+
+ void PrintStackTrace(FILE* out, ThreadLocalTop* thread);
+ void MarkCompactPrologue(bool is_compacting,
+ ThreadLocalTop* archived_thread_data);
+ void MarkCompactEpilogue(bool is_compacting,
+ ThreadLocalTop* archived_thread_data);
+
+ void FillCache();
+
+ int stack_trace_nesting_level_;
+ StringStream* incomplete_message_;
+ // The preallocated memory thread singleton.
+ PreallocatedMemoryThread* preallocated_memory_thread_;
+ Address isolate_addresses_[k_isolate_address_count + 1]; // NOLINT
+ NoAllocationStringAllocator* preallocated_message_space_;
+
+ Bootstrapper* bootstrapper_;
+ RuntimeProfiler* runtime_profiler_;
+ CompilationCache* compilation_cache_;
+ Counters* counters_;
+ CpuFeatures* cpu_features_;
+ CodeRange* code_range_;
+ Mutex* break_access_;
+ Heap heap_;
+ Logger* logger_;
+ StackGuard stack_guard_;
+ StatsTable* stats_table_;
+ StubCache* stub_cache_;
+ DeoptimizerData* deoptimizer_data_;
+ ThreadLocalTop thread_local_top_;
+ bool capture_stack_trace_for_uncaught_exceptions_;
+ int stack_trace_for_uncaught_exceptions_frame_limit_;
+ StackTrace::StackTraceOptions stack_trace_for_uncaught_exceptions_options_;
+ TranscendentalCache* transcendental_cache_;
+ MemoryAllocator* memory_allocator_;
+ KeyedLookupCache* keyed_lookup_cache_;
+ ContextSlotCache* context_slot_cache_;
+ DescriptorLookupCache* descriptor_lookup_cache_;
+ v8::ImplementationUtilities::HandleScopeData handle_scope_data_;
+ HandleScopeImplementer* handle_scope_implementer_;
+ ScannerConstants* scanner_constants_;
+ Zone zone_;
+ PreallocatedStorage in_use_list_;
+ PreallocatedStorage free_list_;
+ bool preallocated_storage_preallocated_;
+ PcToCodeCache* pc_to_code_cache_;
+ StringInputBuffer* write_input_buffer_;
+ GlobalHandles* global_handles_;
+ ContextSwitcher* context_switcher_;
+ ThreadManager* thread_manager_;
+ AstSentinels* ast_sentinels_;
+ RuntimeState runtime_state_;
+ StringInputBuffer liveedit_compare_substrings_buf1_;
+ StringInputBuffer liveedit_compare_substrings_buf2_;
+ StaticResource<SafeStringInputBuffer> compiler_safe_string_input_buffer_;
+ Builtins builtins_;
+ StringTracker* string_tracker_;
+ unibrow::Mapping<unibrow::Ecma262UnCanonicalize> jsregexp_uncanonicalize_;
+ unibrow::Mapping<unibrow::CanonicalizationRange> jsregexp_canonrange_;
+ StringInputBuffer objects_string_compare_buffer_a_;
+ StringInputBuffer objects_string_compare_buffer_b_;
+ StaticResource<StringInputBuffer> objects_string_input_buffer_;
+ unibrow::Mapping<unibrow::Ecma262Canonicalize>
+ regexp_macro_assembler_canonicalize_;
+ RegExpStack* regexp_stack_;
+ unibrow::Mapping<unibrow::Ecma262Canonicalize> interp_canonicalize_mapping_;
+ ZoneObjectList frame_element_constant_list_;
+ ZoneObjectList result_constant_list_;
+
+#if defined(V8_TARGET_ARCH_ARM) && !defined(__arm__) || \
+ defined(V8_TARGET_ARCH_MIPS) && !defined(__mips__)
+ bool simulator_initialized_;
+ HashMap* simulator_i_cache_;
+ Redirection* simulator_redirection_;
+#endif
+
+#ifdef DEBUG
+ // A static array of histogram info for each type.
+ HistogramInfo heap_histograms_[LAST_TYPE + 1];
+ JSObject::SpillInformation js_spill_information_;
+ int code_kind_statistics_[Code::NUMBER_OF_KINDS];
+#endif
+
+#ifdef ENABLE_DEBUGGER_SUPPORT
+ Debugger* debugger_;
+ Debug* debug_;
+#endif
+
+#ifdef ENABLE_LOGGING_AND_PROFILING
+ ProducerHeapProfile* producer_heap_profile_;
+#endif
+
+#define GLOBAL_BACKING_STORE(type, name, initialvalue) \
+ type name##_;
+ ISOLATE_INIT_LIST(GLOBAL_BACKING_STORE)
+#undef GLOBAL_BACKING_STORE
+
+#define GLOBAL_ARRAY_BACKING_STORE(type, name, length) \
+ type name##_[length];
+ ISOLATE_INIT_ARRAY_LIST(GLOBAL_ARRAY_BACKING_STORE)
+#undef GLOBAL_ARRAY_BACKING_STORE
+
+#ifdef DEBUG
+ // This class is huge and has a number of fields controlled by
+ // preprocessor defines. Make sure the offsets of these fields agree
+ // between compilation units.
+#define ISOLATE_FIELD_OFFSET(type, name, ignored) \
+ static const intptr_t name##_debug_offset_;
+ ISOLATE_INIT_LIST(ISOLATE_FIELD_OFFSET)
+ ISOLATE_INIT_ARRAY_LIST(ISOLATE_FIELD_OFFSET)
+#undef ISOLATE_FIELD_OFFSET
+#endif
+
+ friend class ExecutionAccess;
+ friend class IsolateInitializer;
+ friend class v8::Isolate;
+ friend class v8::Locker;
+
+ DISALLOW_COPY_AND_ASSIGN(Isolate);
+};
+
+
+// If the GCC version is 4.1.x or 4.2.x an additional field is added to the
+// class as a work around for a bug in the generated code found with these
+// versions of GCC. See V8 issue 122 for details.
+class SaveContext BASE_EMBEDDED {
+ public:
+ explicit SaveContext(Isolate* isolate) : prev_(isolate->save_context()) {
+ if (isolate->context() != NULL) {
+ context_ = Handle<Context>(isolate->context());
+#if __GNUC_VERSION__ >= 40100 && __GNUC_VERSION__ < 40300
+ dummy_ = Handle<Context>(isolate->context());
+#endif
+ }
+ isolate->set_save_context(this);
+
+ // If there is no JS frame under the current C frame, use the value 0.
+ JavaScriptFrameIterator it;
+ js_sp_ = it.done() ? 0 : it.frame()->sp();
+ }
+
+ ~SaveContext() {
+ if (context_.is_null()) {
+ Isolate* isolate = Isolate::Current();
+ isolate->set_context(NULL);
+ isolate->set_save_context(prev_);
+ } else {
+ Isolate* isolate = context_->GetIsolate();
+ isolate->set_context(*context_);
+ isolate->set_save_context(prev_);
+ }
+ }
+
+ Handle<Context> context() { return context_; }
+ SaveContext* prev() { return prev_; }
+
+ // Returns true if this save context is below a given JavaScript frame.
+ bool below(JavaScriptFrame* frame) {
+ return (js_sp_ == 0) || (frame->sp() < js_sp_);
+ }
+
+ private:
+ Handle<Context> context_;
+#if __GNUC_VERSION__ >= 40100 && __GNUC_VERSION__ < 40300
+ Handle<Context> dummy_;
+#endif
+ SaveContext* prev_;
+ Address js_sp_; // The top JS frame's sp when saving context.
+};
+
+
+class AssertNoContextChange BASE_EMBEDDED {
+#ifdef DEBUG
+ public:
+ AssertNoContextChange() :
+ scope_(Isolate::Current()),
+ context_(Isolate::Current()->context(), Isolate::Current()) {
+ }
+
+ ~AssertNoContextChange() {
+ ASSERT(Isolate::Current()->context() == *context_);
+ }
+
+ private:
+ HandleScope scope_;
+ Handle<Context> context_;
+#else
+ public:
+ AssertNoContextChange() { }
+#endif
+};
+
+
+class ExecutionAccess BASE_EMBEDDED {
+ public:
+ explicit ExecutionAccess(Isolate* isolate) : isolate_(isolate) {
+ Lock(isolate);
+ }
+ ~ExecutionAccess() { Unlock(isolate_); }
+
+ static void Lock(Isolate* isolate) { isolate->break_access_->Lock(); }
+ static void Unlock(Isolate* isolate) { isolate->break_access_->Unlock(); }
+
+ static bool TryLock(Isolate* isolate) {
+ return isolate->break_access_->TryLock();
+ }
+
+ private:
+ Isolate* isolate_;
+};
+
+
+// Support for checking for stack-overflows in C++ code.
+class StackLimitCheck BASE_EMBEDDED {
+ public:
+ explicit StackLimitCheck(Isolate* isolate) : isolate_(isolate) { }
+
+ bool HasOverflowed() const {
+ StackGuard* stack_guard = isolate_->stack_guard();
+ // Stack has overflowed in C++ code only if stack pointer exceeds the C++
+ // stack guard and the limits are not set to interrupt values.
+ // TODO(214): Stack overflows are ignored if a interrupt is pending. This
+ // code should probably always use the initial C++ limit.
+ return (reinterpret_cast<uintptr_t>(this) < stack_guard->climit()) &&
+ stack_guard->IsStackOverflow();
+ }
+ private:
+ Isolate* isolate_;
+};
+
+
+// Support for temporarily postponing interrupts. When the outermost
+// postpone scope is left the interrupts will be re-enabled and any
+// interrupts that occurred while in the scope will be taken into
+// account.
+class PostponeInterruptsScope BASE_EMBEDDED {
+ public:
+ explicit PostponeInterruptsScope(Isolate* isolate)
+ : stack_guard_(isolate->stack_guard()) {
+ stack_guard_->thread_local_.postpone_interrupts_nesting_++;
+ stack_guard_->DisableInterrupts();
+ }
+
+ ~PostponeInterruptsScope() {
+ if (--stack_guard_->thread_local_.postpone_interrupts_nesting_ == 0) {
+ stack_guard_->EnableInterrupts();
+ }
+ }
+ private:
+ StackGuard* stack_guard_;
+};
+
+
+// Temporary macros for accessing current isolate and its subobjects.
+// They provide better readability, especially when used a lot in the code.
+#define HEAP (v8::internal::Isolate::Current()->heap())
+#define FACTORY (v8::internal::Isolate::Current()->factory())
+#define ISOLATE (v8::internal::Isolate::Current())
+#define ZONE (v8::internal::Isolate::Current()->zone())
+#define LOGGER (v8::internal::Isolate::Current()->logger())
+
+
+// Tells whether the global context is marked with out of memory.
+inline bool Context::has_out_of_memory() {
+ return global_context()->out_of_memory()->IsTrue();
+}
+
+
+// Mark the global context with out of memory.
+inline void Context::mark_out_of_memory() {
+ global_context()->set_out_of_memory(HEAP->true_value());
+}
+
+
+// Temporary macro to be used to flag definitions that are indeed static
+// and not per-isolate. (It would be great to be able to grep for [static]!)
+#define RLYSTC static
+
+
+// Temporary macro to be used to flag classes that should be static.
+#define STATIC_CLASS class
+
+
+// Temporary macro to be used to flag classes that are completely converted
+// to be isolate-friendly. Their mix of static/nonstatic methods/fields is
+// correct.
+#define ISOLATED_CLASS class
+
+} } // namespace v8::internal
+
+// TODO(isolates): Get rid of these -inl.h includes and place them only where
+// they're needed.
+#include "allocation-inl.h"
+#include "zone-inl.h"
+#include "frames-inl.h"
+
+#endif // V8_ISOLATE_H_