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FluorescentCIAAfricanAmerican
2020-04-22 12:56:21 -04:00
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38
external/v8/include/libplatform/libplatform.h vendored Normal file
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// Copyright 2014 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef V8_LIBPLATFORM_LIBPLATFORM_H_
#define V8_LIBPLATFORM_LIBPLATFORM_H_
#include "include/v8-platform.h"
namespace v8 {
namespace platform {
/**
* Returns a new instance of the default v8::Platform implementation.
*
* The caller will take ownership of the returned pointer. |thread_pool_size|
* is the number of worker threads to allocate for background jobs. If a value
* of zero is passed, a suitable default based on the current number of
* processors online will be chosen.
*/
v8::Platform* CreateDefaultPlatform(int thread_pool_size = 0);
/**
* Pumps the message loop for the given isolate.
*
* The caller has to make sure that this is called from the right thread.
* Returns true if a task was executed, and false otherwise. This call does
* not block if no task is pending. The |platform| has to be created using
* |CreateDefaultPlatform|.
*/
bool PumpMessageLoop(v8::Platform* platform, v8::Isolate* isolate);
} // namespace platform
} // namespace v8
#endif // V8_LIBPLATFORM_LIBPLATFORM_H_

270
external/v8/include/v8-debug.h vendored Normal file
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// Copyright 2008 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef V8_V8_DEBUG_H_
#define V8_V8_DEBUG_H_
#include "v8.h"
/**
* Debugger support for the V8 JavaScript engine.
*/
namespace v8 {
// Debug events which can occur in the V8 JavaScript engine.
enum DebugEvent {
Break = 1,
Exception = 2,
NewFunction = 3,
BeforeCompile = 4,
AfterCompile = 5,
CompileError = 6,
PromiseEvent = 7,
AsyncTaskEvent = 8,
BreakForCommand = 9
};
class V8_EXPORT Debug {
public:
/**
* A client object passed to the v8 debugger whose ownership will be taken by
* it. v8 is always responsible for deleting the object.
*/
class ClientData {
public:
virtual ~ClientData() {}
};
/**
* A message object passed to the debug message handler.
*/
class Message {
public:
/**
* Check type of message.
*/
virtual bool IsEvent() const = 0;
virtual bool IsResponse() const = 0;
virtual DebugEvent GetEvent() const = 0;
/**
* Indicate whether this is a response to a continue command which will
* start the VM running after this is processed.
*/
virtual bool WillStartRunning() const = 0;
/**
* Access to execution state and event data. Don't store these cross
* callbacks as their content becomes invalid. These objects are from the
* debugger event that started the debug message loop.
*/
virtual Handle<Object> GetExecutionState() const = 0;
virtual Handle<Object> GetEventData() const = 0;
/**
* Get the debugger protocol JSON.
*/
virtual Handle<String> GetJSON() const = 0;
/**
* Get the context active when the debug event happened. Note this is not
* the current active context as the JavaScript part of the debugger is
* running in its own context which is entered at this point.
*/
virtual Handle<Context> GetEventContext() const = 0;
/**
* Client data passed with the corresponding request if any. This is the
* client_data data value passed into Debug::SendCommand along with the
* request that led to the message or NULL if the message is an event. The
* debugger takes ownership of the data and will delete it even if there is
* no message handler.
*/
virtual ClientData* GetClientData() const = 0;
virtual Isolate* GetIsolate() const = 0;
virtual ~Message() {}
};
/**
* An event details object passed to the debug event listener.
*/
class EventDetails {
public:
/**
* Event type.
*/
virtual DebugEvent GetEvent() const = 0;
/**
* Access to execution state and event data of the debug event. Don't store
* these cross callbacks as their content becomes invalid.
*/
virtual Handle<Object> GetExecutionState() const = 0;
virtual Handle<Object> GetEventData() const = 0;
/**
* Get the context active when the debug event happened. Note this is not
* the current active context as the JavaScript part of the debugger is
* running in its own context which is entered at this point.
*/
virtual Handle<Context> GetEventContext() const = 0;
/**
* Client data passed with the corresponding callback when it was
* registered.
*/
virtual Handle<Value> GetCallbackData() const = 0;
/**
* Client data passed to DebugBreakForCommand function. The
* debugger takes ownership of the data and will delete it even if
* there is no message handler.
*/
virtual ClientData* GetClientData() const = 0;
virtual ~EventDetails() {}
};
/**
* Debug event callback function.
*
* \param event_details object providing information about the debug event
*
* A EventCallback2 does not take possession of the event data,
* and must not rely on the data persisting after the handler returns.
*/
typedef void (*EventCallback)(const EventDetails& event_details);
/**
* Debug message callback function.
*
* \param message the debug message handler message object
*
* A MessageHandler2 does not take possession of the message data,
* and must not rely on the data persisting after the handler returns.
*/
typedef void (*MessageHandler)(const Message& message);
/**
* Callback function for the host to ensure debug messages are processed.
*/
typedef void (*DebugMessageDispatchHandler)();
static bool SetDebugEventListener(EventCallback that,
Handle<Value> data = Handle<Value>());
// Schedule a debugger break to happen when JavaScript code is run
// in the given isolate.
static void DebugBreak(Isolate* isolate);
// Remove scheduled debugger break in given isolate if it has not
// happened yet.
static void CancelDebugBreak(Isolate* isolate);
// Check if a debugger break is scheduled in the given isolate.
static bool CheckDebugBreak(Isolate* isolate);
// Break execution of JavaScript in the given isolate (this method
// can be invoked from a non-VM thread) for further client command
// execution on a VM thread. Client data is then passed in
// EventDetails to EventCallback2 at the moment when the VM actually
// stops.
static void DebugBreakForCommand(Isolate* isolate, ClientData* data);
// Message based interface. The message protocol is JSON.
static void SetMessageHandler(MessageHandler handler);
static void SendCommand(Isolate* isolate,
const uint16_t* command, int length,
ClientData* client_data = NULL);
/**
* Run a JavaScript function in the debugger.
* \param fun the function to call
* \param data passed as second argument to the function
* With this call the debugger is entered and the function specified is called
* with the execution state as the first argument. This makes it possible to
* get access to information otherwise not available during normal JavaScript
* execution e.g. details on stack frames. Receiver of the function call will
* be the debugger context global object, however this is a subject to change.
* The following example shows a JavaScript function which when passed to
* v8::Debug::Call will return the current line of JavaScript execution.
*
* \code
* function frame_source_line(exec_state) {
* return exec_state.frame(0).sourceLine();
* }
* \endcode
*/
static Local<Value> Call(v8::Handle<v8::Function> fun,
Handle<Value> data = Handle<Value>());
/**
* Returns a mirror object for the given object.
*/
static Local<Value> GetMirror(v8::Handle<v8::Value> obj);
/**
* Makes V8 process all pending debug messages.
*
* From V8 point of view all debug messages come asynchronously (e.g. from
* remote debugger) but they all must be handled synchronously: V8 cannot
* do 2 things at one time so normal script execution must be interrupted
* for a while.
*
* Generally when message arrives V8 may be in one of 3 states:
* 1. V8 is running script; V8 will automatically interrupt and process all
* pending messages;
* 2. V8 is suspended on debug breakpoint; in this state V8 is dedicated
* to reading and processing debug messages;
* 3. V8 is not running at all or has called some long-working C++ function;
* by default it means that processing of all debug messages will be deferred
* until V8 gets control again; however, embedding application may improve
* this by manually calling this method.
*
* Technically this method in many senses is equivalent to executing empty
* script:
* 1. It does nothing except for processing all pending debug messages.
* 2. It should be invoked with the same precautions and from the same context
* as V8 script would be invoked from, because:
* a. with "evaluate" command it can do whatever normal script can do,
* including all native calls;
* b. no other thread should call V8 while this method is running
* (v8::Locker may be used here).
*
* "Evaluate" debug command behavior currently is not specified in scope
* of this method.
*/
static void ProcessDebugMessages();
/**
* Debugger is running in its own context which is entered while debugger
* messages are being dispatched. This is an explicit getter for this
* debugger context. Note that the content of the debugger context is subject
* to change.
*/
static Local<Context> GetDebugContext();
/**
* Enable/disable LiveEdit functionality for the given Isolate
* (default Isolate if not provided). V8 will abort if LiveEdit is
* unexpectedly used. LiveEdit is enabled by default.
*/
static void SetLiveEditEnabled(Isolate* isolate, bool enable);
};
} // namespace v8
#undef EXPORT
#endif // V8_V8_DEBUG_H_

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// Copyright 2013 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef V8_V8_PLATFORM_H_
#define V8_V8_PLATFORM_H_
namespace v8 {
class Isolate;
/**
* A Task represents a unit of work.
*/
class Task {
public:
virtual ~Task() {}
virtual void Run() = 0;
};
/**
* V8 Platform abstraction layer.
*
* The embedder has to provide an implementation of this interface before
* initializing the rest of V8.
*/
class Platform {
public:
/**
* This enum is used to indicate whether a task is potentially long running,
* or causes a long wait. The embedder might want to use this hint to decide
* whether to execute the task on a dedicated thread.
*/
enum ExpectedRuntime {
kShortRunningTask,
kLongRunningTask
};
virtual ~Platform() {}
/**
* Schedules a task to be invoked on a background thread. |expected_runtime|
* indicates that the task will run a long time. The Platform implementation
* takes ownership of |task|. There is no guarantee about order of execution
* of tasks wrt order of scheduling, nor is there a guarantee about the
* thread the task will be run on.
*/
virtual void CallOnBackgroundThread(Task* task,
ExpectedRuntime expected_runtime) = 0;
/**
* Schedules a task to be invoked on a foreground thread wrt a specific
* |isolate|. Tasks posted for the same isolate should be execute in order of
* scheduling. The definition of "foreground" is opaque to V8.
*/
virtual void CallOnForegroundThread(Isolate* isolate, Task* task) = 0;
/**
* Monotonically increasing time in seconds from an arbitrary fixed point in
* the past. This function is expected to return at least
* millisecond-precision values. For this reason,
* it is recommended that the fixed point be no further in the past than
* the epoch.
**/
virtual double MonotonicallyIncreasingTime() = 0;
};
} // namespace v8
#endif // V8_V8_PLATFORM_H_

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external/v8/include/v8-profiler.h vendored Normal file
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// Copyright 2010 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef V8_V8_PROFILER_H_
#define V8_V8_PROFILER_H_
#include "v8.h"
/**
* Profiler support for the V8 JavaScript engine.
*/
namespace v8 {
class HeapGraphNode;
struct HeapStatsUpdate;
typedef uint32_t SnapshotObjectId;
/**
* CpuProfileNode represents a node in a call graph.
*/
class V8_EXPORT CpuProfileNode {
public:
/** Returns function name (empty string for anonymous functions.) */
Handle<String> GetFunctionName() const;
/** Returns id of the script where function is located. */
int GetScriptId() const;
/** Returns resource name for script from where the function originates. */
Handle<String> GetScriptResourceName() const;
/**
* Returns the number, 1-based, of the line where the function originates.
* kNoLineNumberInfo if no line number information is available.
*/
int GetLineNumber() const;
/**
* Returns 1-based number of the column where the function originates.
* kNoColumnNumberInfo if no column number information is available.
*/
int GetColumnNumber() const;
/** Returns bailout reason for the function
* if the optimization was disabled for it.
*/
const char* GetBailoutReason() const;
/**
* Returns the count of samples where the function was currently executing.
*/
unsigned GetHitCount() const;
/** Returns function entry UID. */
unsigned GetCallUid() const;
/** Returns id of the node. The id is unique within the tree */
unsigned GetNodeId() const;
/** Returns child nodes count of the node. */
int GetChildrenCount() const;
/** Retrieves a child node by index. */
const CpuProfileNode* GetChild(int index) const;
static const int kNoLineNumberInfo = Message::kNoLineNumberInfo;
static const int kNoColumnNumberInfo = Message::kNoColumnInfo;
};
/**
* CpuProfile contains a CPU profile in a form of top-down call tree
* (from main() down to functions that do all the work).
*/
class V8_EXPORT CpuProfile {
public:
/** Returns CPU profile title. */
Handle<String> GetTitle() const;
/** Returns the root node of the top down call tree. */
const CpuProfileNode* GetTopDownRoot() const;
/**
* Returns number of samples recorded. The samples are not recorded unless
* |record_samples| parameter of CpuProfiler::StartCpuProfiling is true.
*/
int GetSamplesCount() const;
/**
* Returns profile node corresponding to the top frame the sample at
* the given index.
*/
const CpuProfileNode* GetSample(int index) const;
/**
* Returns the timestamp of the sample. The timestamp is the number of
* microseconds since some unspecified starting point.
* The point is equal to the starting point used by GetStartTime.
*/
int64_t GetSampleTimestamp(int index) const;
/**
* Returns time when the profile recording was started (in microseconds)
* since some unspecified starting point.
*/
int64_t GetStartTime() const;
/**
* Returns time when the profile recording was stopped (in microseconds)
* since some unspecified starting point.
* The point is equal to the starting point used by GetStartTime.
*/
int64_t GetEndTime() const;
/**
* Deletes the profile and removes it from CpuProfiler's list.
* All pointers to nodes previously returned become invalid.
*/
void Delete();
};
/**
* Interface for controlling CPU profiling. Instance of the
* profiler can be retrieved using v8::Isolate::GetCpuProfiler.
*/
class V8_EXPORT CpuProfiler {
public:
/**
* Changes default CPU profiler sampling interval to the specified number
* of microseconds. Default interval is 1000us. This method must be called
* when there are no profiles being recorded.
*/
void SetSamplingInterval(int us);
/**
* Starts collecting CPU profile. Title may be an empty string. It
* is allowed to have several profiles being collected at
* once. Attempts to start collecting several profiles with the same
* title are silently ignored. While collecting a profile, functions
* from all security contexts are included in it. The token-based
* filtering is only performed when querying for a profile.
*
* |record_samples| parameter controls whether individual samples should
* be recorded in addition to the aggregated tree.
*/
void StartProfiling(Handle<String> title, bool record_samples = false);
/** Deprecated. Use StartProfiling instead. */
V8_DEPRECATED("Use StartProfiling",
void StartCpuProfiling(Handle<String> title,
bool record_samples = false));
/**
* Stops collecting CPU profile with a given title and returns it.
* If the title given is empty, finishes the last profile started.
*/
CpuProfile* StopProfiling(Handle<String> title);
/** Deprecated. Use StopProfiling instead. */
V8_DEPRECATED("Use StopProfiling",
const CpuProfile* StopCpuProfiling(Handle<String> title));
/**
* Tells the profiler whether the embedder is idle.
*/
void SetIdle(bool is_idle);
private:
CpuProfiler();
~CpuProfiler();
CpuProfiler(const CpuProfiler&);
CpuProfiler& operator=(const CpuProfiler&);
};
/**
* HeapSnapshotEdge represents a directed connection between heap
* graph nodes: from retainers to retained nodes.
*/
class V8_EXPORT HeapGraphEdge {
public:
enum Type {
kContextVariable = 0, // A variable from a function context.
kElement = 1, // An element of an array.
kProperty = 2, // A named object property.
kInternal = 3, // A link that can't be accessed from JS,
// thus, its name isn't a real property name
// (e.g. parts of a ConsString).
kHidden = 4, // A link that is needed for proper sizes
// calculation, but may be hidden from user.
kShortcut = 5, // A link that must not be followed during
// sizes calculation.
kWeak = 6 // A weak reference (ignored by the GC).
};
/** Returns edge type (see HeapGraphEdge::Type). */
Type GetType() const;
/**
* Returns edge name. This can be a variable name, an element index, or
* a property name.
*/
Handle<Value> GetName() const;
/** Returns origin node. */
const HeapGraphNode* GetFromNode() const;
/** Returns destination node. */
const HeapGraphNode* GetToNode() const;
};
/**
* HeapGraphNode represents a node in a heap graph.
*/
class V8_EXPORT HeapGraphNode {
public:
enum Type {
kHidden = 0, // Hidden node, may be filtered when shown to user.
kArray = 1, // An array of elements.
kString = 2, // A string.
kObject = 3, // A JS object (except for arrays and strings).
kCode = 4, // Compiled code.
kClosure = 5, // Function closure.
kRegExp = 6, // RegExp.
kHeapNumber = 7, // Number stored in the heap.
kNative = 8, // Native object (not from V8 heap).
kSynthetic = 9, // Synthetic object, usualy used for grouping
// snapshot items together.
kConsString = 10, // Concatenated string. A pair of pointers to strings.
kSlicedString = 11, // Sliced string. A fragment of another string.
kSymbol = 12 // A Symbol (ES6).
};
/** Returns node type (see HeapGraphNode::Type). */
Type GetType() const;
/**
* Returns node name. Depending on node's type this can be the name
* of the constructor (for objects), the name of the function (for
* closures), string value, or an empty string (for compiled code).
*/
Handle<String> GetName() const;
/**
* Returns node id. For the same heap object, the id remains the same
* across all snapshots.
*/
SnapshotObjectId GetId() const;
/** Returns node's own size, in bytes. */
V8_DEPRECATED("Use GetShallowSize instead",
int GetSelfSize() const);
/** Returns node's own size, in bytes. */
size_t GetShallowSize() const;
/** Returns child nodes count of the node. */
int GetChildrenCount() const;
/** Retrieves a child by index. */
const HeapGraphEdge* GetChild(int index) const;
};
/**
* An interface for exporting data from V8, using "push" model.
*/
class V8_EXPORT OutputStream { // NOLINT
public:
enum WriteResult {
kContinue = 0,
kAbort = 1
};
virtual ~OutputStream() {}
/** Notify about the end of stream. */
virtual void EndOfStream() = 0;
/** Get preferred output chunk size. Called only once. */
virtual int GetChunkSize() { return 1024; }
/**
* Writes the next chunk of snapshot data into the stream. Writing
* can be stopped by returning kAbort as function result. EndOfStream
* will not be called in case writing was aborted.
*/
virtual WriteResult WriteAsciiChunk(char* data, int size) = 0;
/**
* Writes the next chunk of heap stats data into the stream. Writing
* can be stopped by returning kAbort as function result. EndOfStream
* will not be called in case writing was aborted.
*/
virtual WriteResult WriteHeapStatsChunk(HeapStatsUpdate* data, int count) {
return kAbort;
}
};
/**
* HeapSnapshots record the state of the JS heap at some moment.
*/
class V8_EXPORT HeapSnapshot {
public:
enum SerializationFormat {
kJSON = 0 // See format description near 'Serialize' method.
};
/** Returns heap snapshot UID (assigned by the profiler.) */
unsigned GetUid() const;
/** Returns heap snapshot title. */
Handle<String> GetTitle() const;
/** Returns the root node of the heap graph. */
const HeapGraphNode* GetRoot() const;
/** Returns a node by its id. */
const HeapGraphNode* GetNodeById(SnapshotObjectId id) const;
/** Returns total nodes count in the snapshot. */
int GetNodesCount() const;
/** Returns a node by index. */
const HeapGraphNode* GetNode(int index) const;
/** Returns a max seen JS object Id. */
SnapshotObjectId GetMaxSnapshotJSObjectId() const;
/**
* Deletes the snapshot and removes it from HeapProfiler's list.
* All pointers to nodes, edges and paths previously returned become
* invalid.
*/
void Delete();
/**
* Prepare a serialized representation of the snapshot. The result
* is written into the stream provided in chunks of specified size.
* The total length of the serialized snapshot is unknown in
* advance, it can be roughly equal to JS heap size (that means,
* it can be really big - tens of megabytes).
*
* For the JSON format, heap contents are represented as an object
* with the following structure:
*
* {
* snapshot: {
* title: "...",
* uid: nnn,
* meta: { meta-info },
* node_count: nnn,
* edge_count: nnn
* },
* nodes: [nodes array],
* edges: [edges array],
* strings: [strings array]
* }
*
* Nodes reference strings, other nodes, and edges by their indexes
* in corresponding arrays.
*/
void Serialize(OutputStream* stream, SerializationFormat format) const;
};
/**
* An interface for reporting progress and controlling long-running
* activities.
*/
class V8_EXPORT ActivityControl { // NOLINT
public:
enum ControlOption {
kContinue = 0,
kAbort = 1
};
virtual ~ActivityControl() {}
/**
* Notify about current progress. The activity can be stopped by
* returning kAbort as the callback result.
*/
virtual ControlOption ReportProgressValue(int done, int total) = 0;
};
/**
* Interface for controlling heap profiling. Instance of the
* profiler can be retrieved using v8::Isolate::GetHeapProfiler.
*/
class V8_EXPORT HeapProfiler {
public:
/**
* Callback function invoked for obtaining RetainedObjectInfo for
* the given JavaScript wrapper object. It is prohibited to enter V8
* while the callback is running: only getters on the handle and
* GetPointerFromInternalField on the objects are allowed.
*/
typedef RetainedObjectInfo* (*WrapperInfoCallback)
(uint16_t class_id, Handle<Value> wrapper);
/** Returns the number of snapshots taken. */
int GetSnapshotCount();
/** Returns a snapshot by index. */
const HeapSnapshot* GetHeapSnapshot(int index);
/**
* Returns SnapshotObjectId for a heap object referenced by |value| if
* it has been seen by the heap profiler, kUnknownObjectId otherwise.
*/
SnapshotObjectId GetObjectId(Handle<Value> value);
/**
* Returns heap object with given SnapshotObjectId if the object is alive,
* otherwise empty handle is returned.
*/
Handle<Value> FindObjectById(SnapshotObjectId id);
/**
* Clears internal map from SnapshotObjectId to heap object. The new objects
* will not be added into it unless a heap snapshot is taken or heap object
* tracking is kicked off.
*/
void ClearObjectIds();
/**
* A constant for invalid SnapshotObjectId. GetSnapshotObjectId will return
* it in case heap profiler cannot find id for the object passed as
* parameter. HeapSnapshot::GetNodeById will always return NULL for such id.
*/
static const SnapshotObjectId kUnknownObjectId = 0;
/**
* Callback interface for retrieving user friendly names of global objects.
*/
class ObjectNameResolver {
public:
/**
* Returns name to be used in the heap snapshot for given node. Returned
* string must stay alive until snapshot collection is completed.
*/
virtual const char* GetName(Handle<Object> object) = 0;
protected:
virtual ~ObjectNameResolver() {}
};
/**
* Takes a heap snapshot and returns it. Title may be an empty string.
*/
const HeapSnapshot* TakeHeapSnapshot(
Handle<String> title,
ActivityControl* control = NULL,
ObjectNameResolver* global_object_name_resolver = NULL);
/**
* Starts tracking of heap objects population statistics. After calling
* this method, all heap objects relocations done by the garbage collector
* are being registered.
*
* |track_allocations| parameter controls whether stack trace of each
* allocation in the heap will be recorded and reported as part of
* HeapSnapshot.
*/
void StartTrackingHeapObjects(bool track_allocations = false);
/**
* Adds a new time interval entry to the aggregated statistics array. The
* time interval entry contains information on the current heap objects
* population size. The method also updates aggregated statistics and
* reports updates for all previous time intervals via the OutputStream
* object. Updates on each time interval are provided as a stream of the
* HeapStatsUpdate structure instances.
* The return value of the function is the last seen heap object Id.
*
* StartTrackingHeapObjects must be called before the first call to this
* method.
*/
SnapshotObjectId GetHeapStats(OutputStream* stream);
/**
* Stops tracking of heap objects population statistics, cleans up all
* collected data. StartHeapObjectsTracking must be called again prior to
* calling PushHeapObjectsStats next time.
*/
void StopTrackingHeapObjects();
/**
* Deletes all snapshots taken. All previously returned pointers to
* snapshots and their contents become invalid after this call.
*/
void DeleteAllHeapSnapshots();
/** Binds a callback to embedder's class ID. */
void SetWrapperClassInfoProvider(
uint16_t class_id,
WrapperInfoCallback callback);
/**
* Default value of persistent handle class ID. Must not be used to
* define a class. Can be used to reset a class of a persistent
* handle.
*/
static const uint16_t kPersistentHandleNoClassId = 0;
/** Returns memory used for profiler internal data and snapshots. */
size_t GetProfilerMemorySize();
/**
* Sets a RetainedObjectInfo for an object group (see V8::SetObjectGroupId).
*/
void SetRetainedObjectInfo(UniqueId id, RetainedObjectInfo* info);
private:
HeapProfiler();
~HeapProfiler();
HeapProfiler(const HeapProfiler&);
HeapProfiler& operator=(const HeapProfiler&);
};
/**
* Interface for providing information about embedder's objects
* held by global handles. This information is reported in two ways:
*
* 1. When calling AddObjectGroup, an embedder may pass
* RetainedObjectInfo instance describing the group. To collect
* this information while taking a heap snapshot, V8 calls GC
* prologue and epilogue callbacks.
*
* 2. When a heap snapshot is collected, V8 additionally
* requests RetainedObjectInfos for persistent handles that
* were not previously reported via AddObjectGroup.
*
* Thus, if an embedder wants to provide information about native
* objects for heap snapshots, he can do it in a GC prologue
* handler, and / or by assigning wrapper class ids in the following way:
*
* 1. Bind a callback to class id by calling SetWrapperClassInfoProvider.
* 2. Call SetWrapperClassId on certain persistent handles.
*
* V8 takes ownership of RetainedObjectInfo instances passed to it and
* keeps them alive only during snapshot collection. Afterwards, they
* are freed by calling the Dispose class function.
*/
class V8_EXPORT RetainedObjectInfo { // NOLINT
public:
/** Called by V8 when it no longer needs an instance. */
virtual void Dispose() = 0;
/** Returns whether two instances are equivalent. */
virtual bool IsEquivalent(RetainedObjectInfo* other) = 0;
/**
* Returns hash value for the instance. Equivalent instances
* must have the same hash value.
*/
virtual intptr_t GetHash() = 0;
/**
* Returns human-readable label. It must be a null-terminated UTF-8
* encoded string. V8 copies its contents during a call to GetLabel.
*/
virtual const char* GetLabel() = 0;
/**
* Returns human-readable group label. It must be a null-terminated UTF-8
* encoded string. V8 copies its contents during a call to GetGroupLabel.
* Heap snapshot generator will collect all the group names, create
* top level entries with these names and attach the objects to the
* corresponding top level group objects. There is a default
* implementation which is required because embedders don't have their
* own implementation yet.
*/
virtual const char* GetGroupLabel() { return GetLabel(); }
/**
* Returns element count in case if a global handle retains
* a subgraph by holding one of its nodes.
*/
virtual intptr_t GetElementCount() { return -1; }
/** Returns embedder's object size in bytes. */
virtual intptr_t GetSizeInBytes() { return -1; }
protected:
RetainedObjectInfo() {}
virtual ~RetainedObjectInfo() {}
private:
RetainedObjectInfo(const RetainedObjectInfo&);
RetainedObjectInfo& operator=(const RetainedObjectInfo&);
};
/**
* A struct for exporting HeapStats data from V8, using "push" model.
* See HeapProfiler::GetHeapStats.
*/
struct HeapStatsUpdate {
HeapStatsUpdate(uint32_t index, uint32_t count, uint32_t size)
: index(index), count(count), size(size) { }
uint32_t index; // Index of the time interval that was changed.
uint32_t count; // New value of count field for the interval with this index.
uint32_t size; // New value of size field for the interval with this index.
};
} // namespace v8
#endif // V8_V8_PROFILER_H_

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// Copyright 2010 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef V8_V8_TEST_H_
#define V8_V8_TEST_H_
#include "v8.h"
/**
* Testing support for the V8 JavaScript engine.
*/
namespace v8 {
class V8_EXPORT Testing {
public:
enum StressType {
kStressTypeOpt,
kStressTypeDeopt
};
/**
* Set the type of stressing to do. The default if not set is kStressTypeOpt.
*/
static void SetStressRunType(StressType type);
/**
* Get the number of runs of a given test that is required to get the full
* stress coverage.
*/
static int GetStressRuns();
/**
* Indicate the number of the run which is about to start. The value of run
* should be between 0 and one less than the result from GetStressRuns()
*/
static void PrepareStressRun(int run);
/**
* Force deoptimization of all functions.
*/
static void DeoptimizeAll();
};
} // namespace v8
#endif // V8_V8_TEST_H_

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// Copyright 2014 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef V8_UTIL_H_
#define V8_UTIL_H_
#include "v8.h"
#include <map>
#include <vector>
/**
* Support for Persistent containers.
*
* C++11 embedders can use STL containers with UniquePersistent values,
* but pre-C++11 does not support the required move semantic and hence
* may want these container classes.
*/
namespace v8 {
typedef uintptr_t PersistentContainerValue;
static const uintptr_t kPersistentContainerNotFound = 0;
enum PersistentContainerCallbackType {
kNotWeak,
kWeak
};
/**
* A default trait implemenation for PersistentValueMap which uses std::map
* as a backing map.
*
* Users will have to implement their own weak callbacks & dispose traits.
*/
template<typename K, typename V>
class StdMapTraits {
public:
// STL map & related:
typedef std::map<K, PersistentContainerValue> Impl;
typedef typename Impl::iterator Iterator;
static bool Empty(Impl* impl) { return impl->empty(); }
static size_t Size(Impl* impl) { return impl->size(); }
static void Swap(Impl& a, Impl& b) { std::swap(a, b); } // NOLINT
static Iterator Begin(Impl* impl) { return impl->begin(); }
static Iterator End(Impl* impl) { return impl->end(); }
static K Key(Iterator it) { return it->first; }
static PersistentContainerValue Value(Iterator it) { return it->second; }
static PersistentContainerValue Set(Impl* impl, K key,
PersistentContainerValue value) {
std::pair<Iterator, bool> res = impl->insert(std::make_pair(key, value));
PersistentContainerValue old_value = kPersistentContainerNotFound;
if (!res.second) {
old_value = res.first->second;
res.first->second = value;
}
return old_value;
}
static PersistentContainerValue Get(Impl* impl, K key) {
Iterator it = impl->find(key);
if (it == impl->end()) return kPersistentContainerNotFound;
return it->second;
}
static PersistentContainerValue Remove(Impl* impl, K key) {
Iterator it = impl->find(key);
if (it == impl->end()) return kPersistentContainerNotFound;
PersistentContainerValue value = it->second;
impl->erase(it);
return value;
}
};
/**
* A default trait implementation for PersistentValueMap, which inherits
* a std:map backing map from StdMapTraits and holds non-weak persistent
* objects and has no special Dispose handling.
*
* You should not derive from this class, since MapType depends on the
* surrounding class, and hence a subclass cannot simply inherit the methods.
*/
template<typename K, typename V>
class DefaultPersistentValueMapTraits : public StdMapTraits<K, V> {
public:
// Weak callback & friends:
static const PersistentContainerCallbackType kCallbackType = kNotWeak;
typedef PersistentValueMap<K, V, DefaultPersistentValueMapTraits<K, V> >
MapType;
typedef void WeakCallbackDataType;
static WeakCallbackDataType* WeakCallbackParameter(
MapType* map, const K& key, Local<V> value) {
return NULL;
}
static MapType* MapFromWeakCallbackData(
const WeakCallbackData<V, WeakCallbackDataType>& data) {
return NULL;
}
static K KeyFromWeakCallbackData(
const WeakCallbackData<V, WeakCallbackDataType>& data) {
return K();
}
static void DisposeCallbackData(WeakCallbackDataType* data) { }
static void Dispose(Isolate* isolate, UniquePersistent<V> value, K key) { }
};
/**
* A map wrapper that allows using UniquePersistent as a mapped value.
* C++11 embedders don't need this class, as they can use UniquePersistent
* directly in std containers.
*
* The map relies on a backing map, whose type and accessors are described
* by the Traits class. The backing map will handle values of type
* PersistentContainerValue, with all conversion into and out of V8
* handles being transparently handled by this class.
*/
template<typename K, typename V, typename Traits>
class PersistentValueMap {
public:
explicit PersistentValueMap(Isolate* isolate) : isolate_(isolate) {}
~PersistentValueMap() { Clear(); }
Isolate* GetIsolate() { return isolate_; }
/**
* Return size of the map.
*/
size_t Size() { return Traits::Size(&impl_); }
/**
* Return whether the map holds weak persistents.
*/
bool IsWeak() { return Traits::kCallbackType != kNotWeak; }
/**
* Get value stored in map.
*/
Local<V> Get(const K& key) {
return Local<V>::New(isolate_, FromVal(Traits::Get(&impl_, key)));
}
/**
* Check whether a value is contained in the map.
*/
bool Contains(const K& key) {
return Traits::Get(&impl_, key) != kPersistentContainerNotFound;
}
/**
* Get value stored in map and set it in returnValue.
* Return true if a value was found.
*/
bool SetReturnValue(const K& key,
ReturnValue<Value> returnValue) {
return SetReturnValueFromVal(&returnValue, Traits::Get(&impl_, key));
}
/**
* Call Isolate::SetReference with the given parent and the map value.
*/
void SetReference(const K& key,
const Persistent<Object>& parent) {
GetIsolate()->SetReference(
reinterpret_cast<internal::Object**>(parent.val_),
reinterpret_cast<internal::Object**>(FromVal(Traits::Get(&impl_, key))));
}
/**
* Put value into map. Depending on Traits::kIsWeak, the value will be held
* by the map strongly or weakly.
* Returns old value as UniquePersistent.
*/
UniquePersistent<V> Set(const K& key, Local<V> value) {
UniquePersistent<V> persistent(isolate_, value);
return SetUnique(key, &persistent);
}
/**
* Put value into map, like Set(const K&, Local<V>).
*/
UniquePersistent<V> Set(const K& key, UniquePersistent<V> value) {
return SetUnique(key, &value);
}
/**
* Return value for key and remove it from the map.
*/
UniquePersistent<V> Remove(const K& key) {
return Release(Traits::Remove(&impl_, key)).Pass();
}
/**
* Traverses the map repeatedly,
* in case side effects of disposal cause insertions.
**/
void Clear() {
typedef typename Traits::Iterator It;
HandleScope handle_scope(isolate_);
// TODO(dcarney): figure out if this swap and loop is necessary.
while (!Traits::Empty(&impl_)) {
typename Traits::Impl impl;
Traits::Swap(impl_, impl);
for (It i = Traits::Begin(&impl); i != Traits::End(&impl); ++i) {
Traits::Dispose(isolate_, Release(Traits::Value(i)).Pass(),
Traits::Key(i));
}
}
}
/**
* Helper class for GetReference/SetWithReference. Do not use outside
* that context.
*/
class PersistentValueReference {
public:
PersistentValueReference() : value_(kPersistentContainerNotFound) { }
PersistentValueReference(const PersistentValueReference& other)
: value_(other.value_) { }
Local<V> NewLocal(Isolate* isolate) const {
return Local<V>::New(isolate, FromVal(value_));
}
bool IsEmpty() const {
return value_ == kPersistentContainerNotFound;
}
template<typename T>
bool SetReturnValue(ReturnValue<T> returnValue) {
return SetReturnValueFromVal(&returnValue, value_);
}
void Reset() {
value_ = kPersistentContainerNotFound;
}
void operator=(const PersistentValueReference& other) {
value_ = other.value_;
}
private:
friend class PersistentValueMap;
explicit PersistentValueReference(PersistentContainerValue value)
: value_(value) { }
void operator=(PersistentContainerValue value) {
value_ = value;
}
PersistentContainerValue value_;
};
/**
* Get a reference to a map value. This enables fast, repeated access
* to a value stored in the map while the map remains unchanged.
*
* Careful: This is potentially unsafe, so please use with care.
* The value will become invalid if the value for this key changes
* in the underlying map, as a result of Set or Remove for the same
* key; as a result of the weak callback for the same key; or as a
* result of calling Clear() or destruction of the map.
*/
PersistentValueReference GetReference(const K& key) {
return PersistentValueReference(Traits::Get(&impl_, key));
}
/**
* Put a value into the map and update the reference.
* Restrictions of GetReference apply here as well.
*/
UniquePersistent<V> Set(const K& key, UniquePersistent<V> value,
PersistentValueReference* reference) {
*reference = Leak(&value);
return SetUnique(key, &value);
}
private:
PersistentValueMap(PersistentValueMap&);
void operator=(PersistentValueMap&);
/**
* Put the value into the map, and set the 'weak' callback when demanded
* by the Traits class.
*/
UniquePersistent<V> SetUnique(const K& key, UniquePersistent<V>* persistent) {
if (Traits::kCallbackType != kNotWeak) {
Local<V> value(Local<V>::New(isolate_, *persistent));
persistent->template SetWeak<typename Traits::WeakCallbackDataType>(
Traits::WeakCallbackParameter(this, key, value), WeakCallback);
}
PersistentContainerValue old_value =
Traits::Set(&impl_, key, ClearAndLeak(persistent));
return Release(old_value).Pass();
}
static void WeakCallback(
const WeakCallbackData<V, typename Traits::WeakCallbackDataType>& data) {
if (Traits::kCallbackType != kNotWeak) {
PersistentValueMap<K, V, Traits>* persistentValueMap =
Traits::MapFromWeakCallbackData(data);
K key = Traits::KeyFromWeakCallbackData(data);
Traits::Dispose(data.GetIsolate(),
persistentValueMap->Remove(key).Pass(), key);
Traits::DisposeCallbackData(data.GetParameter());
}
}
static V* FromVal(PersistentContainerValue v) {
return reinterpret_cast<V*>(v);
}
static bool SetReturnValueFromVal(
ReturnValue<Value>* returnValue, PersistentContainerValue value) {
bool hasValue = value != kPersistentContainerNotFound;
if (hasValue) {
returnValue->SetInternal(
*reinterpret_cast<internal::Object**>(FromVal(value)));
}
return hasValue;
}
static PersistentContainerValue ClearAndLeak(
UniquePersistent<V>* persistent) {
V* v = persistent->val_;
persistent->val_ = 0;
return reinterpret_cast<PersistentContainerValue>(v);
}
static PersistentContainerValue Leak(
UniquePersistent<V>* persistent) {
return reinterpret_cast<PersistentContainerValue>(persistent->val_);
}
/**
* Return a container value as UniquePersistent and make sure the weak
* callback is properly disposed of. All remove functionality should go
* through this.
*/
static UniquePersistent<V> Release(PersistentContainerValue v) {
UniquePersistent<V> p;
p.val_ = FromVal(v);
if (Traits::kCallbackType != kNotWeak && p.IsWeak()) {
Traits::DisposeCallbackData(
p.template ClearWeak<typename Traits::WeakCallbackDataType>());
}
return p.Pass();
}
Isolate* isolate_;
typename Traits::Impl impl_;
};
/**
* A map that uses UniquePersistent as value and std::map as the backing
* implementation. Persistents are held non-weak.
*
* C++11 embedders don't need this class, as they can use
* UniquePersistent directly in std containers.
*/
template<typename K, typename V,
typename Traits = DefaultPersistentValueMapTraits<K, V> >
class StdPersistentValueMap : public PersistentValueMap<K, V, Traits> {
public:
explicit StdPersistentValueMap(Isolate* isolate)
: PersistentValueMap<K, V, Traits>(isolate) {}
};
class DefaultPersistentValueVectorTraits {
public:
typedef std::vector<PersistentContainerValue> Impl;
static void Append(Impl* impl, PersistentContainerValue value) {
impl->push_back(value);
}
static bool IsEmpty(const Impl* impl) {
return impl->empty();
}
static size_t Size(const Impl* impl) {
return impl->size();
}
static PersistentContainerValue Get(const Impl* impl, size_t i) {
return (i < impl->size()) ? impl->at(i) : kPersistentContainerNotFound;
}
static void ReserveCapacity(Impl* impl, size_t capacity) {
impl->reserve(capacity);
}
static void Clear(Impl* impl) {
impl->clear();
}
};
/**
* A vector wrapper that safely stores UniquePersistent values.
* C++11 embedders don't need this class, as they can use UniquePersistent
* directly in std containers.
*
* This class relies on a backing vector implementation, whose type and methods
* are described by the Traits class. The backing map will handle values of type
* PersistentContainerValue, with all conversion into and out of V8
* handles being transparently handled by this class.
*/
template<typename V, typename Traits = DefaultPersistentValueVectorTraits>
class PersistentValueVector {
public:
explicit PersistentValueVector(Isolate* isolate) : isolate_(isolate) { }
~PersistentValueVector() {
Clear();
}
/**
* Append a value to the vector.
*/
void Append(Local<V> value) {
UniquePersistent<V> persistent(isolate_, value);
Traits::Append(&impl_, ClearAndLeak(&persistent));
}
/**
* Append a persistent's value to the vector.
*/
void Append(UniquePersistent<V> persistent) {
Traits::Append(&impl_, ClearAndLeak(&persistent));
}
/**
* Are there any values in the vector?
*/
bool IsEmpty() const {
return Traits::IsEmpty(&impl_);
}
/**
* How many elements are in the vector?
*/
size_t Size() const {
return Traits::Size(&impl_);
}
/**
* Retrieve the i-th value in the vector.
*/
Local<V> Get(size_t index) const {
return Local<V>::New(isolate_, FromVal(Traits::Get(&impl_, index)));
}
/**
* Remove all elements from the vector.
*/
void Clear() {
size_t length = Traits::Size(&impl_);
for (size_t i = 0; i < length; i++) {
UniquePersistent<V> p;
p.val_ = FromVal(Traits::Get(&impl_, i));
}
Traits::Clear(&impl_);
}
/**
* Reserve capacity in the vector.
* (Efficiency gains depend on the backing implementation.)
*/
void ReserveCapacity(size_t capacity) {
Traits::ReserveCapacity(&impl_, capacity);
}
private:
static PersistentContainerValue ClearAndLeak(
UniquePersistent<V>* persistent) {
V* v = persistent->val_;
persistent->val_ = 0;
return reinterpret_cast<PersistentContainerValue>(v);
}
static V* FromVal(PersistentContainerValue v) {
return reinterpret_cast<V*>(v);
}
Isolate* isolate_;
typename Traits::Impl impl_;
};
} // namespace v8
#endif // V8_UTIL_H_

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// Copyright 2013 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef V8CONFIG_H_
#define V8CONFIG_H_
// Platform headers for feature detection below.
#if defined(__ANDROID__)
# include <sys/cdefs.h>
#elif defined(__APPLE__)
# include <TargetConditionals.h>
#elif defined(__linux__)
# include <features.h>
#endif
// This macro allows to test for the version of the GNU C library (or
// a compatible C library that masquerades as glibc). It evaluates to
// 0 if libc is not GNU libc or compatible.
// Use like:
// #if V8_GLIBC_PREREQ(2, 3)
// ...
// #endif
#if defined(__GLIBC__) && defined(__GLIBC_MINOR__)
# define V8_GLIBC_PREREQ(major, minor) \
((__GLIBC__ * 100 + __GLIBC_MINOR__) >= ((major) * 100 + (minor)))
#else
# define V8_GLIBC_PREREQ(major, minor) 0
#endif
// This macro allows to test for the version of the GNU C++ compiler.
// Note that this also applies to compilers that masquerade as GCC,
// for example clang and the Intel C++ compiler for Linux.
// Use like:
// #if V8_GNUC_PREREQ(4, 3, 1)
// ...
// #endif
#if defined(__GNUC__) && defined(__GNUC_MINOR__) && defined(__GNUC_PATCHLEVEL__)
# define V8_GNUC_PREREQ(major, minor, patchlevel) \
((__GNUC__ * 10000 + __GNUC_MINOR__ * 100 + __GNUC_PATCHLEVEL__) >= \
((major) * 10000 + (minor) * 100 + (patchlevel)))
#elif defined(__GNUC__) && defined(__GNUC_MINOR__)
# define V8_GNUC_PREREQ(major, minor, patchlevel) \
((__GNUC__ * 10000 + __GNUC_MINOR__) >= \
((major) * 10000 + (minor) * 100 + (patchlevel)))
#else
# define V8_GNUC_PREREQ(major, minor, patchlevel) 0
#endif
// -----------------------------------------------------------------------------
// Operating system detection
//
// V8_OS_ANDROID - Android
// V8_OS_BSD - BSDish (Mac OS X, Net/Free/Open/DragonFlyBSD)
// V8_OS_CYGWIN - Cygwin
// V8_OS_DRAGONFLYBSD - DragonFlyBSD
// V8_OS_FREEBSD - FreeBSD
// V8_OS_LINUX - Linux
// V8_OS_MACOSX - Mac OS X
// V8_OS_NACL - Native Client
// V8_OS_NETBSD - NetBSD
// V8_OS_OPENBSD - OpenBSD
// V8_OS_POSIX - POSIX compatible (mostly everything except Windows)
// V8_OS_QNX - QNX Neutrino
// V8_OS_SOLARIS - Sun Solaris and OpenSolaris
// V8_OS_WIN - Microsoft Windows
#if defined(__ANDROID__)
# define V8_OS_ANDROID 1
# define V8_OS_LINUX 1
# define V8_OS_POSIX 1
#elif defined(__APPLE__)
# define V8_OS_BSD 1
# define V8_OS_MACOSX 1
# define V8_OS_POSIX 1
#elif defined(__native_client__)
# define V8_OS_NACL 1
# define V8_OS_POSIX 1
#elif defined(__CYGWIN__)
# define V8_OS_CYGWIN 1
# define V8_OS_POSIX 1
#elif defined(__linux__)
# define V8_OS_LINUX 1
# define V8_OS_POSIX 1
#elif defined(__sun)
# define V8_OS_POSIX 1
# define V8_OS_SOLARIS 1
#elif defined(__FreeBSD__)
# define V8_OS_BSD 1
# define V8_OS_FREEBSD 1
# define V8_OS_POSIX 1
#elif defined(__DragonFly__)
# define V8_OS_BSD 1
# define V8_OS_DRAGONFLYBSD 1
# define V8_OS_POSIX 1
#elif defined(__NetBSD__)
# define V8_OS_BSD 1
# define V8_OS_NETBSD 1
# define V8_OS_POSIX 1
#elif defined(__OpenBSD__)
# define V8_OS_BSD 1
# define V8_OS_OPENBSD 1
# define V8_OS_POSIX 1
#elif defined(__QNXNTO__)
# define V8_OS_POSIX 1
# define V8_OS_QNX 1
#elif defined(_WIN32)
# define V8_OS_WIN 1
#endif
// -----------------------------------------------------------------------------
// C library detection
//
// V8_LIBC_MSVCRT - MSVC libc
// V8_LIBC_BIONIC - Bionic libc
// V8_LIBC_BSD - BSD libc derivate
// V8_LIBC_GLIBC - GNU C library
// V8_LIBC_UCLIBC - uClibc
//
// Note that testing for libc must be done using #if not #ifdef. For example,
// to test for the GNU C library, use:
// #if V8_LIBC_GLIBC
// ...
// #endif
#if defined (_MSC_VER)
# define V8_LIBC_MSVCRT 1
#elif defined(__BIONIC__)
# define V8_LIBC_BIONIC 1
# define V8_LIBC_BSD 1
#elif defined(__UCLIBC__)
# define V8_LIBC_UCLIBC 1
#elif defined(__GLIBC__) || defined(__GNU_LIBRARY__)
# define V8_LIBC_GLIBC 1
#else
# define V8_LIBC_BSD V8_OS_BSD
#endif
// -----------------------------------------------------------------------------
// Compiler detection
//
// V8_CC_CLANG - Clang
// V8_CC_GNU - GNU C++
// V8_CC_INTEL - Intel C++
// V8_CC_MINGW - Minimalist GNU for Windows
// V8_CC_MINGW32 - Minimalist GNU for Windows (mingw32)
// V8_CC_MINGW64 - Minimalist GNU for Windows (mingw-w64)
// V8_CC_MSVC - Microsoft Visual C/C++
//
// C++11 feature detection
//
// V8_HAS_CXX11_ALIGNAS - alignas specifier supported
// V8_HAS_CXX11_ALIGNOF - alignof(type) operator supported
// V8_HAS_CXX11_STATIC_ASSERT - static_assert() supported
// V8_HAS_CXX11_DELETE - deleted functions supported
// V8_HAS_CXX11_FINAL - final marker supported
// V8_HAS_CXX11_OVERRIDE - override marker supported
//
// Compiler-specific feature detection
//
// V8_HAS___ALIGNOF - __alignof(type) operator supported
// V8_HAS___ALIGNOF__ - __alignof__(type) operator supported
// V8_HAS_ATTRIBUTE_ALIGNED - __attribute__((aligned(n))) supported
// V8_HAS_ATTRIBUTE_ALWAYS_INLINE - __attribute__((always_inline))
// supported
// V8_HAS_ATTRIBUTE_DEPRECATED - __attribute__((deprecated)) supported
// V8_HAS_ATTRIBUTE_NOINLINE - __attribute__((noinline)) supported
// V8_HAS_ATTRIBUTE_UNUSED - __attribute__((unused)) supported
// V8_HAS_ATTRIBUTE_VISIBILITY - __attribute__((visibility)) supported
// V8_HAS_ATTRIBUTE_WARN_UNUSED_RESULT - __attribute__((warn_unused_result))
// supported
// V8_HAS_BUILTIN_CLZ - __builtin_clz() supported
// V8_HAS_BUILTIN_CTZ - __builtin_ctz() supported
// V8_HAS_BUILTIN_EXPECT - __builtin_expect() supported
// V8_HAS_BUILTIN_POPCOUNT - __builtin_popcount() supported
// V8_HAS_BUILTIN_SADD_OVERFLOW - __builtin_sadd_overflow() supported
// V8_HAS_BUILTIN_SSUB_OVERFLOW - __builtin_ssub_overflow() supported
// V8_HAS_DECLSPEC_ALIGN - __declspec(align(n)) supported
// V8_HAS_DECLSPEC_DEPRECATED - __declspec(deprecated) supported
// V8_HAS_DECLSPEC_NOINLINE - __declspec(noinline) supported
// V8_HAS___FINAL - __final supported in non-C++11 mode
// V8_HAS___FORCEINLINE - __forceinline supported
// V8_HAS_SEALED - MSVC style sealed marker supported
//
// Note that testing for compilers and/or features must be done using #if
// not #ifdef. For example, to test for Intel C++ Compiler, use:
// #if V8_CC_INTEL
// ...
// #endif
#if defined(__clang__)
# define V8_CC_CLANG 1
// Clang defines __alignof__ as alias for __alignof
# define V8_HAS___ALIGNOF 1
# define V8_HAS___ALIGNOF__ V8_HAS___ALIGNOF
# define V8_HAS_ATTRIBUTE_ALIGNED (__has_attribute(aligned))
# define V8_HAS_ATTRIBUTE_ALWAYS_INLINE (__has_attribute(always_inline))
# define V8_HAS_ATTRIBUTE_DEPRECATED (__has_attribute(deprecated))
# define V8_HAS_ATTRIBUTE_NOINLINE (__has_attribute(noinline))
# define V8_HAS_ATTRIBUTE_UNUSED (__has_attribute(unused))
# define V8_HAS_ATTRIBUTE_VISIBILITY (__has_attribute(visibility))
# define V8_HAS_ATTRIBUTE_WARN_UNUSED_RESULT \
(__has_attribute(warn_unused_result))
# define V8_HAS_BUILTIN_CLZ (__has_builtin(__builtin_clz))
# define V8_HAS_BUILTIN_CTZ (__has_builtin(__builtin_ctz))
# define V8_HAS_BUILTIN_EXPECT (__has_builtin(__builtin_expect))
# define V8_HAS_BUILTIN_POPCOUNT (__has_builtin(__builtin_popcount))
# define V8_HAS_BUILTIN_SADD_OVERFLOW (__has_builtin(__builtin_sadd_overflow))
# define V8_HAS_BUILTIN_SSUB_OVERFLOW (__has_builtin(__builtin_ssub_overflow))
# define V8_HAS_CXX11_ALIGNAS (__has_feature(cxx_alignas))
# define V8_HAS_CXX11_STATIC_ASSERT (__has_feature(cxx_static_assert))
# define V8_HAS_CXX11_DELETE (__has_feature(cxx_deleted_functions))
# define V8_HAS_CXX11_FINAL (__has_feature(cxx_override_control))
# define V8_HAS_CXX11_OVERRIDE (__has_feature(cxx_override_control))
#elif defined(__GNUC__)
# define V8_CC_GNU 1
// Intel C++ also masquerades as GCC 3.2.0
# define V8_CC_INTEL (defined(__INTEL_COMPILER))
# define V8_CC_MINGW32 (defined(__MINGW32__))
# define V8_CC_MINGW64 (defined(__MINGW64__))
# define V8_CC_MINGW (V8_CC_MINGW32 || V8_CC_MINGW64)
# define V8_HAS___ALIGNOF__ (V8_GNUC_PREREQ(4, 3, 0))
# define V8_HAS_ATTRIBUTE_ALIGNED (V8_GNUC_PREREQ(2, 95, 0))
// always_inline is available in gcc 4.0 but not very reliable until 4.4.
// Works around "sorry, unimplemented: inlining failed" build errors with
// older compilers.
# define V8_HAS_ATTRIBUTE_ALWAYS_INLINE (V8_GNUC_PREREQ(4, 4, 0))
# define V8_HAS_ATTRIBUTE_DEPRECATED (V8_GNUC_PREREQ(3, 4, 0))
# define V8_HAS_ATTRIBUTE_DEPRECATED_MESSAGE (V8_GNUC_PREREQ(4, 5, 0))
# define V8_HAS_ATTRIBUTE_NOINLINE (V8_GNUC_PREREQ(3, 4, 0))
# define V8_HAS_ATTRIBUTE_UNUSED (V8_GNUC_PREREQ(2, 95, 0))
# define V8_HAS_ATTRIBUTE_VISIBILITY (V8_GNUC_PREREQ(4, 3, 0))
# define V8_HAS_ATTRIBUTE_WARN_UNUSED_RESULT \
(!V8_CC_INTEL && V8_GNUC_PREREQ(4, 1, 0))
# define V8_HAS_BUILTIN_CLZ (V8_GNUC_PREREQ(3, 4, 0))
# define V8_HAS_BUILTIN_CTZ (V8_GNUC_PREREQ(3, 4, 0))
# define V8_HAS_BUILTIN_EXPECT (V8_GNUC_PREREQ(2, 96, 0))
# define V8_HAS_BUILTIN_POPCOUNT (V8_GNUC_PREREQ(3, 4, 0))
// g++ requires -std=c++0x or -std=gnu++0x to support C++11 functionality
// without warnings (functionality used by the macros below). These modes
// are detectable by checking whether __GXX_EXPERIMENTAL_CXX0X__ is defined or,
// more standardly, by checking whether __cplusplus has a C++11 or greater
// value. Current versions of g++ do not correctly set __cplusplus, so we check
// both for forward compatibility.
# if defined(__GXX_EXPERIMENTAL_CXX0X__) || __cplusplus >= 201103L
# define V8_HAS_CXX11_ALIGNAS (V8_GNUC_PREREQ(4, 8, 0))
# define V8_HAS_CXX11_ALIGNOF (V8_GNUC_PREREQ(4, 8, 0))
# define V8_HAS_CXX11_STATIC_ASSERT (V8_GNUC_PREREQ(4, 3, 0))
# define V8_HAS_CXX11_DELETE (V8_GNUC_PREREQ(4, 4, 0))
# define V8_HAS_CXX11_OVERRIDE (V8_GNUC_PREREQ(4, 7, 0))
# define V8_HAS_CXX11_FINAL (V8_GNUC_PREREQ(4, 7, 0))
# else
// '__final' is a non-C++11 GCC synonym for 'final', per GCC r176655.
# define V8_HAS___FINAL (V8_GNUC_PREREQ(4, 7, 0))
# endif
#elif defined(_MSC_VER)
# define V8_CC_MSVC 1
# define V8_HAS___ALIGNOF 1
// Override control was added with Visual Studio 2005, but
// Visual Studio 2010 and earlier spell "final" as "sealed".
# define V8_HAS_CXX11_FINAL (_MSC_VER >= 1700)
# define V8_HAS_CXX11_OVERRIDE (_MSC_VER >= 1400)
# define V8_HAS_SEALED (_MSC_VER >= 1400)
# define V8_HAS_DECLSPEC_ALIGN 1
# define V8_HAS_DECLSPEC_DEPRECATED (_MSC_VER >= 1300)
# define V8_HAS_DECLSPEC_NOINLINE 1
# define V8_HAS___FORCEINLINE 1
#endif
// -----------------------------------------------------------------------------
// Helper macros
// A macro used to make better inlining. Don't bother for debug builds.
// Use like:
// V8_INLINE int GetZero() { return 0; }
#if !defined(DEBUG) && V8_HAS_ATTRIBUTE_ALWAYS_INLINE
# define V8_INLINE inline __attribute__((always_inline))
#elif !defined(DEBUG) && V8_HAS___FORCEINLINE
# define V8_INLINE __forceinline
#else
# define V8_INLINE inline
#endif
// A macro used to tell the compiler to never inline a particular function.
// Don't bother for debug builds.
// Use like:
// V8_NOINLINE int GetMinusOne() { return -1; }
#if !defined(DEBUG) && V8_HAS_ATTRIBUTE_NOINLINE
# define V8_NOINLINE __attribute__((noinline))
#elif !defined(DEBUG) && V8_HAS_DECLSPEC_NOINLINE
# define V8_NOINLINE __declspec(noinline)
#else
# define V8_NOINLINE /* NOT SUPPORTED */
#endif
// A macro to mark classes or functions as deprecated.
#if defined(V8_DEPRECATION_WARNINGS) && V8_HAS_ATTRIBUTE_DEPRECATED_MESSAGE
# define V8_DEPRECATED(message, declarator) \
declarator __attribute__((deprecated(message)))
#elif defined(V8_DEPRECATION_WARNINGS) && V8_HAS_ATTRIBUTE_DEPRECATED
# define V8_DEPRECATED(message, declarator) \
declarator __attribute__((deprecated))
#elif defined(V8_DEPRECATION_WARNINGS) && V8_HAS_DECLSPEC_DEPRECATED
# define V8_DEPRECATED(message, declarator) __declspec(deprecated) declarator
#else
# define V8_DEPRECATED(message, declarator) declarator
#endif
// A macro to provide the compiler with branch prediction information.
#if V8_HAS_BUILTIN_EXPECT
# define V8_UNLIKELY(condition) (__builtin_expect(!!(condition), 0))
# define V8_LIKELY(condition) (__builtin_expect(!!(condition), 1))
#else
# define V8_UNLIKELY(condition) (condition)
# define V8_LIKELY(condition) (condition)
#endif
// A macro to specify that a method is deleted from the corresponding class.
// Any attempt to use the method will always produce an error at compile time
// when this macro can be implemented (i.e. if the compiler supports C++11).
// If the current compiler does not support C++11, use of the annotated method
// will still cause an error, but the error will most likely occur at link time
// rather than at compile time. As a backstop, method declarations using this
// macro should be private.
// Use like:
// class A {
// private:
// A(const A& other) V8_DELETE;
// A& operator=(const A& other) V8_DELETE;
// };
#if V8_HAS_CXX11_DELETE
# define V8_DELETE = delete
#else
# define V8_DELETE /* NOT SUPPORTED */
#endif
// This macro allows to specify memory alignment for structs, classes, etc.
// Use like:
// class V8_ALIGNED(16) MyClass { ... };
// V8_ALIGNED(32) int array[42];
#if V8_HAS_CXX11_ALIGNAS
# define V8_ALIGNED(n) alignas(n)
#elif V8_HAS_ATTRIBUTE_ALIGNED
# define V8_ALIGNED(n) __attribute__((aligned(n)))
#elif V8_HAS_DECLSPEC_ALIGN
# define V8_ALIGNED(n) __declspec(align(n))
#else
# define V8_ALIGNED(n) /* NOT SUPPORTED */
#endif
// This macro is similar to V8_ALIGNED(), but takes a type instead of size
// in bytes. If the compiler does not supports using the alignment of the
// |type|, it will align according to the |alignment| instead. For example,
// Visual Studio C++ cannot combine __declspec(align) and __alignof. The
// |alignment| must be a literal that is used as a kind of worst-case fallback
// alignment.
// Use like:
// struct V8_ALIGNAS(AnotherClass, 16) NewClass { ... };
// V8_ALIGNAS(double, 8) int array[100];
#if V8_HAS_CXX11_ALIGNAS
# define V8_ALIGNAS(type, alignment) alignas(type)
#elif V8_HAS___ALIGNOF__ && V8_HAS_ATTRIBUTE_ALIGNED
# define V8_ALIGNAS(type, alignment) __attribute__((aligned(__alignof__(type))))
#else
# define V8_ALIGNAS(type, alignment) V8_ALIGNED(alignment)
#endif
// This macro returns alignment in bytes (an integer power of two) required for
// any instance of the given type, which is either complete type, an array type,
// or a reference type.
// Use like:
// size_t alignment = V8_ALIGNOF(double);
#if V8_HAS_CXX11_ALIGNOF
# define V8_ALIGNOF(type) alignof(type)
#elif V8_HAS___ALIGNOF
# define V8_ALIGNOF(type) __alignof(type)
#elif V8_HAS___ALIGNOF__
# define V8_ALIGNOF(type) __alignof__(type)
#else
// Note that alignment of a type within a struct can be less than the
// alignment of the type stand-alone (because of ancient ABIs), so this
// should only be used as a last resort.
namespace v8 { template <typename T> class AlignOfHelper { char c; T t; }; }
# define V8_ALIGNOF(type) (sizeof(::v8::AlignOfHelper<type>) - sizeof(type))
#endif
#endif // V8CONFIG_H_

33
external/v8/include/v8stdint.h vendored Normal file
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@@ -0,0 +1,33 @@
// Copyright 2012 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// Load definitions of standard types.
#ifndef V8STDINT_H_
#define V8STDINT_H_
#include <stddef.h>
#include <stdio.h>
#include "v8config.h"
#if V8_OS_WIN && !V8_CC_MINGW
typedef signed char int8_t;
typedef unsigned char uint8_t;
typedef short int16_t; // NOLINT
typedef unsigned short uint16_t; // NOLINT
typedef int int32_t;
typedef unsigned int uint32_t;
typedef __int64 int64_t;
typedef unsigned __int64 uint64_t;
// intptr_t and friends are defined in crtdefs.h through stdio.h.
#else
#include <stdint.h> // NOLINT
#endif
#endif // V8STDINT_H_