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deps: patch V8 to be API/ABI compatible with 7.4 (from 7.6)
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Reverts v8/v8@4214933.
Reverts v8/v8@c76f377.
Reverts v8/v8@e0d7f81.

Co-authored-by: Anna Henningsen <anna@addaleax.net>
Backport-PR-URL: #30109
Backport-PR-URL: #29241
PR-URL: #28955
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@targos @addaleax @BethGriggs
2 people authored and BethGriggs committed Feb 6, 2020
1 parent bb616bb commit 499ccdc
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Showing 13 changed files with 665 additions and 224 deletions.
2 changes: 1 addition & 1 deletion common.gypi
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Expand Up @@ -38,7 +38,7 @@

# Reset this number to 0 on major V8 upgrades.
# Increment by one for each non-official patch applied to deps/v8.
'v8_embedder_string': '-node.18',
'v8_embedder_string': '-node.19',

##### V8 defaults for Node.js #####

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2 changes: 2 additions & 0 deletions deps/v8/include/v8-internal.h
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Expand Up @@ -181,6 +181,8 @@ class Internals {
static const int kNodeStateMask = 0x7;
static const int kNodeStateIsWeakValue = 2;
static const int kNodeStateIsPendingValue = 3;
static const int kNodeIsIndependentShift = 3;
static const int kNodeIsActiveShift = 4;

static const int kFirstNonstringType = 0x40;
static const int kOddballType = 0x43;
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13 changes: 9 additions & 4 deletions deps/v8/include/v8-profiler.h
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Expand Up @@ -304,9 +304,12 @@ class V8_EXPORT CpuProfiler {
* initialized. The profiler object must be disposed after use by calling
* |Dispose| method.
*/
static CpuProfiler* New(Isolate* isolate);
static CpuProfiler* New(Isolate* isolate,
CpuProfilingNamingMode = kDebugNaming,
CpuProfilingLoggingMode = kLazyLogging);
CpuProfilingNamingMode mode);
static CpuProfiler* New(Isolate* isolate,
CpuProfilingNamingMode namingMode,
CpuProfilingLoggingMode loggingMode);

/**
* Synchronously collect current stack sample in all profilers attached to
Expand Down Expand Up @@ -355,8 +358,10 @@ class V8_EXPORT CpuProfiler {
* discarded.
*/
void StartProfiling(
Local<String> title, CpuProfilingMode mode, bool record_samples = false,
unsigned max_samples = CpuProfilingOptions::kNoSampleLimit);
Local<String> title, CpuProfilingMode mode, bool record_samples = false);
void StartProfiling(
Local<String> title, CpuProfilingMode mode, bool record_samples,
unsigned max_samples);
/**
* The same as StartProfiling above, but the CpuProfilingMode defaults to
* kLeafNodeLineNumbers mode, which was the previous default behavior of the
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18 changes: 18 additions & 0 deletions deps/v8/include/v8-util.h
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Expand Up @@ -194,6 +194,14 @@ class PersistentValueMapBase {
return SetReturnValueFromVal(&returnValue, Traits::Get(&impl_, key));
}

/**
* Call V8::RegisterExternallyReferencedObject with the map value for given
* key.
*/
V8_DEPRECATED(
"Used TracedGlobal and EmbedderHeapTracer::RegisterEmbedderReference",
inline void RegisterExternallyReferencedObject(K& key));

/**
* Return value for key and remove it from the map.
*/
Expand Down Expand Up @@ -344,6 +352,16 @@ class PersistentValueMapBase {
const char* label_;
};

template <typename K, typename V, typename Traits>
inline void
PersistentValueMapBase<K, V, Traits>::RegisterExternallyReferencedObject(
K& key) {
assert(Contains(key));
V8::RegisterExternallyReferencedObject(
reinterpret_cast<internal::Address*>(FromVal(Traits::Get(&impl_, key))),
reinterpret_cast<internal::Isolate*>(GetIsolate()));
}

template <typename K, typename V, typename Traits>
class PersistentValueMap : public PersistentValueMapBase<K, V, Traits> {
public:
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186 changes: 177 additions & 9 deletions deps/v8/include/v8.h
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Expand Up @@ -123,6 +123,7 @@ class ExternalString;
class Isolate;
class LocalEmbedderHeapTracer;
class MicrotaskQueue;
class NeverReadOnlySpaceObject;
struct ScriptStreamingData;
template<typename T> class CustomArguments;
class PropertyCallbackArguments;
Expand Down Expand Up @@ -546,6 +547,38 @@ template <class T> class PersistentBase {
*/
V8_INLINE void AnnotateStrongRetainer(const char* label);

/**
* Allows the embedder to tell the v8 garbage collector that a certain object
* is alive. Only allowed when the embedder is asked to trace its heap by
* EmbedderHeapTracer.
*/
V8_DEPRECATED(
"Used TracedGlobal and EmbedderHeapTracer::RegisterEmbedderReference",
V8_INLINE void RegisterExternalReference(Isolate* isolate) const);

/**
* Marks the reference to this object independent. Garbage collector is free
* to ignore any object groups containing this object. Weak callback for an
* independent handle should not assume that it will be preceded by a global
* GC prologue callback or followed by a global GC epilogue callback.
*/
V8_DEPRECATED(
"Weak objects are always considered independent. "
"Use TracedGlobal when trying to use EmbedderHeapTracer. "
"Use a strong handle when trying to keep an object alive.",
V8_INLINE void MarkIndependent());

/**
* Marks the reference to this object as active. The scavenge garbage
* collection should not reclaim the objects marked as active, even if the
* object held by the handle is otherwise unreachable.
*
* This bit is cleared after the each garbage collection pass.
*/
V8_DEPRECATED("Use TracedGlobal.", V8_INLINE void MarkActive());

V8_DEPRECATED("See MarkIndependent.", V8_INLINE bool IsIndependent() const);

/** Returns true if the handle's reference is weak. */
V8_INLINE bool IsWeak() const;

Expand Down Expand Up @@ -2613,6 +2646,9 @@ class V8_EXPORT Value : public Data {

V8_WARN_UNUSED_RESULT MaybeLocal<BigInt> ToBigInt(
Local<Context> context) const;
V8_DEPRECATED("ToBoolean can never throw. Use Local version.",
V8_WARN_UNUSED_RESULT MaybeLocal<Boolean> ToBoolean(
Local<Context> context) const);
V8_WARN_UNUSED_RESULT MaybeLocal<Number> ToNumber(
Local<Context> context) const;
V8_WARN_UNUSED_RESULT MaybeLocal<String> ToString(
Expand All @@ -2628,6 +2664,16 @@ class V8_EXPORT Value : public Data {
V8_WARN_UNUSED_RESULT MaybeLocal<Int32> ToInt32(Local<Context> context) const;

Local<Boolean> ToBoolean(Isolate* isolate) const;
V8_DEPRECATED("Use maybe version",
Local<Number> ToNumber(Isolate* isolate) const);
V8_DEPRECATED("Use maybe version",
Local<String> ToString(Isolate* isolate) const);
V8_DEPRECATED("Use maybe version",
Local<Object> ToObject(Isolate* isolate) const);
V8_DEPRECATED("Use maybe version",
Local<Integer> ToInteger(Isolate* isolate) const);
V8_DEPRECATED("Use maybe version",
Local<Int32> ToInt32(Isolate* isolate) const);

/**
* Attempts to convert a string to an array index.
Expand All @@ -2638,6 +2684,9 @@ class V8_EXPORT Value : public Data {

bool BooleanValue(Isolate* isolate) const;

V8_DEPRECATED("BooleanValue can never throw. Use Isolate version.",
V8_WARN_UNUSED_RESULT Maybe<bool> BooleanValue(
Local<Context> context) const);
V8_WARN_UNUSED_RESULT Maybe<double> NumberValue(Local<Context> context) const;
V8_WARN_UNUSED_RESULT Maybe<int64_t> IntegerValue(
Local<Context> context) const;
Expand Down Expand Up @@ -2957,23 +3006,43 @@ class V8_EXPORT String : public Name {

V8_INLINE static String* Cast(v8::Value* obj);

// TODO(dcarney): remove with deprecation of New functions.
enum NewStringType {
kNormalString = static_cast<int>(v8::NewStringType::kNormal),
kInternalizedString = static_cast<int>(v8::NewStringType::kInternalized)
};

/** Allocates a new string from UTF-8 data.*/
static V8_DEPRECATED(
"Use maybe version",
Local<String> NewFromUtf8(Isolate* isolate, const char* data,
NewStringType type = kNormalString,
int length = -1));

/** Allocates a new string from UTF-8 data. Only returns an empty value when
* length > kMaxLength. **/
static V8_WARN_UNUSED_RESULT MaybeLocal<String> NewFromUtf8(
Isolate* isolate, const char* data,
NewStringType type = NewStringType::kNormal, int length = -1);
Isolate* isolate, const char* data, v8::NewStringType type,
int length = -1);

/** Allocates a new string from Latin-1 data. Only returns an empty value
* when length > kMaxLength. **/
static V8_WARN_UNUSED_RESULT MaybeLocal<String> NewFromOneByte(
Isolate* isolate, const uint8_t* data,
NewStringType type = NewStringType::kNormal, int length = -1);
Isolate* isolate, const uint8_t* data, v8::NewStringType type,
int length = -1);

/** Allocates a new string from UTF-16 data.*/
static V8_DEPRECATED(
"Use maybe version",
Local<String> NewFromTwoByte(Isolate* isolate, const uint16_t* data,
NewStringType type = kNormalString,
int length = -1));

/** Allocates a new string from UTF-16 data. Only returns an empty value when
* length > kMaxLength. **/
static V8_WARN_UNUSED_RESULT MaybeLocal<String> NewFromTwoByte(
Isolate* isolate, const uint16_t* data,
NewStringType type = NewStringType::kNormal, int length = -1);
Isolate* isolate, const uint16_t* data, v8::NewStringType type,
int length = -1);

/**
* Creates a new string by concatenating the left and the right strings
Expand Down Expand Up @@ -3012,6 +3081,10 @@ class V8_EXPORT String : public Name {
* should the underlying buffer be deallocated or modified except through the
* destructor of the external string resource.
*/
static V8_DEPRECATED(
"Use maybe version",
Local<String> NewExternal(Isolate* isolate,
ExternalOneByteStringResource* resource));
static V8_WARN_UNUSED_RESULT MaybeLocal<String> NewExternalOneByte(
Isolate* isolate, ExternalOneByteStringResource* resource);

Expand Down Expand Up @@ -3954,6 +4027,9 @@ class ReturnValue {
}
// Local setters
template <typename S>
V8_INLINE V8_DEPRECATED("Use Global<> instead",
void Set(const Persistent<S>& handle));
template <typename S>
V8_INLINE void Set(const Global<S>& handle);
template <typename S>
V8_INLINE void Set(const TracedGlobal<S>& handle);
Expand Down Expand Up @@ -5344,6 +5420,38 @@ class V8_EXPORT Date : public Object {

V8_INLINE static Date* Cast(Value* obj);

/**
* Time zone redetection indicator for
* DateTimeConfigurationChangeNotification.
*
* kSkip indicates V8 that the notification should not trigger redetecting
* host time zone. kRedetect indicates V8 that host time zone should be
* redetected, and used to set the default time zone.
*
* The host time zone detection may require file system access or similar
* operations unlikely to be available inside a sandbox. If v8 is run inside a
* sandbox, the host time zone has to be detected outside the sandbox before
* calling DateTimeConfigurationChangeNotification function.
*/
enum class TimeZoneDetection { kSkip, kRedetect };

/**
* Notification that the embedder has changed the time zone,
* daylight savings time, or other date / time configuration
* parameters. V8 keeps a cache of various values used for
* date / time computation. This notification will reset
* those cached values for the current context so that date /
* time configuration changes would be reflected in the Date
* object.
*
* This API should not be called more than needed as it will
* negatively impact the performance of date operations.
*/
V8_DEPRECATED("Use Isolate::DateTimeConfigurationChangeNotification",
static void DateTimeConfigurationChangeNotification(
Isolate* isolate, TimeZoneDetection time_zone_detection =
TimeZoneDetection::kSkip));

private:
static void CheckCast(Value* obj);
};
Expand Down Expand Up @@ -6057,6 +6165,21 @@ class V8_EXPORT FunctionTemplate : public Template {
*/
void SetAcceptAnyReceiver(bool value);

/**
* Determines whether the __proto__ accessor ignores instances of
* the function template. If instances of the function template are
* ignored, __proto__ skips all instances and instead returns the
* next object in the prototype chain.
*
* Call with a value of true to make the __proto__ accessor ignore
* instances of the function template. Call with a value of false
* to make the __proto__ accessor not ignore instances of the
* function template. By default, instances of a function template
* are not ignored.
*/
V8_DEPRECATED("This feature is incompatible with ES6+.",
void SetHiddenPrototype(bool value));

/**
* Sets the ReadOnly flag in the attributes of the 'prototype' property
* of functions created from this FunctionTemplate to true.
Expand Down Expand Up @@ -8905,9 +9028,7 @@ class V8_EXPORT V8 {
* Sets V8 flags from a string.
*/
static void SetFlagsFromString(const char* str);
static void SetFlagsFromString(const char* str, size_t length);
V8_DEPRECATED("use size_t version",
static void SetFlagsFromString(const char* str, int length));
static void SetFlagsFromString(const char* str, int length);

/**
* Sets V8 flags from the command line.
Expand Down Expand Up @@ -9081,6 +9202,9 @@ class V8_EXPORT V8 {
const char* label);
static Value* Eternalize(Isolate* isolate, Value* handle);

static void RegisterExternallyReferencedObject(internal::Address* location,
internal::Isolate* isolate);

template <class K, class V, class T>
friend class PersistentValueMapBase;

Expand Down Expand Up @@ -10036,6 +10160,14 @@ void Persistent<T, M>::Copy(const Persistent<S, M2>& that) {
M::Copy(that, this);
}

template <class T>
bool PersistentBase<T>::IsIndependent() const {
typedef internal::Internals I;
if (this->IsEmpty()) return false;
return I::GetNodeFlag(reinterpret_cast<internal::Address*>(this->val_),
I::kNodeIsIndependentShift);
}

template <class T>
bool PersistentBase<T>::IsWeak() const {
typedef internal::Internals I;
Expand Down Expand Up @@ -10102,6 +10234,31 @@ void PersistentBase<T>::AnnotateStrongRetainer(const char* label) {
label);
}

template <class T>
void PersistentBase<T>::RegisterExternalReference(Isolate* isolate) const {
if (IsEmpty()) return;
V8::RegisterExternallyReferencedObject(
reinterpret_cast<internal::Address*>(this->val_),
reinterpret_cast<internal::Isolate*>(isolate));
}

template <class T>
void PersistentBase<T>::MarkIndependent() {
typedef internal::Internals I;
if (this->IsEmpty()) return;
I::UpdateNodeFlag(reinterpret_cast<internal::Address*>(this->val_), true,
I::kNodeIsIndependentShift);
}

template <class T>
void PersistentBase<T>::MarkActive() {
typedef internal::Internals I;
if (this->IsEmpty()) return;
I::UpdateNodeFlag(reinterpret_cast<internal::Address*>(this->val_), true,
I::kNodeIsActiveShift);
}


template <class T>
void PersistentBase<T>::SetWrapperClassId(uint16_t class_id) {
typedef internal::Internals I;
Expand Down Expand Up @@ -10252,6 +10409,17 @@ void TracedGlobal<T>::SetFinalizationCallback(
template <typename T>
ReturnValue<T>::ReturnValue(internal::Address* slot) : value_(slot) {}

template<typename T>
template<typename S>
void ReturnValue<T>::Set(const Persistent<S>& handle) {
TYPE_CHECK(T, S);
if (V8_UNLIKELY(handle.IsEmpty())) {
*value_ = GetDefaultValue();
} else {
*value_ = *reinterpret_cast<internal::Address*>(*handle);
}
}

template <typename T>
template <typename S>
void ReturnValue<T>::Set(const Global<S>& handle) {
Expand Down

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