deps: make V8 9.4 abi-compatible with 9.0

Revert "[api] Avoid handles for const API functions"
This reverts commit aee471b2ff5b1a9e622426454885b748d226535b.

Revert "[api] Remove deprecated [Shared]ArrayBuffer API"
This reverts commit 578f6be77fc5d8af975005c2baf918e7225abb62.

Revert "[Jobs]: Cleanup in v8 platform."
This reverts commit baf2b088dd9f585aa597459f30d71431171666e2.

Revert "Skip global registration of [Shared]ArrayBuffer backing stores"
This reverts commit fcdf35e6d70d51699ece063e25dc705e80673308.

Revert "[api] Remove previously deprecated Function::GetDisplayName()."
This reverts commit 6165fef8cc9dde52973e54c915e6905221b3f8fb.

Revert "[api] Remove deprecated Symbol::Name()"
This reverts commit bbc72ef6c7d6d8e2c4dd074d7713e5c841003163.

Revert API change for HeapProfiler::TakeHeapSnapshot
This reverts a small part of 7f52e4f92d3d3ded9a1701ee2f93966075ae5004.

Revert "[cpu-profiler] Reintroduce support for context filtering"
This reverts commit 0aacfb2a6ecbeda1d1d97ca113afd8253a1b9670.

Restore new argument for TakeHeapSnapshot method
This creates a new TakeHeapSnapshotV8_92 method with the signature from
7f52e4f92d3d3ded9a1701ee2f93966075ae5004.
It is necessary because the API is used internall by V8.

Silence irrelevant warning
V8 triggers it in the Name method.

Revert "[api] Add v8::metrics::LongTaskStats for the LongTasks UKM"
This reverts commit 521ae93bf652b0cc1fec1fdd788e3b80fb72a349.

Move cage_base isolate data field
Makes 3ada6f27404b4ffd6d3e97cf15be76672f60c10d ABI-compatible.

Revert ABI-breaking change in FunctionTemplate::SetCallHandler
Reverts part of a7980d43e030ba4bdb36813d4bc99f85982bf4ee and
ad4eab00e7ec96730eb2c1b6ddcef14ba2e4becd.

Revert "[api] Support PropertyAttribute in v8::Template::Set"
This reverts commit 22a32f11f7a39e4a73105608a51ebab0ad97960f.

Revert API change for FunctionTemplate::New
This reverts the API change of 5f82dbbe534635a8b1e93f27e8fd7e68c0eaf291.

Fix some reverts
- constness of internal APIs has not external effect
- restored API function must but adapted to moved internal API.

Revert "[api] Add API for off-thread code cache deserialization"
This reverts commit f888f48e4c65e3ccfd9fd831c71c1832b957c945.

Revert "[api] Implement signature checks using instance types"
This reverts commit 7df6678c32255ec5a1b1470f1e5a7e56b3b192fa.

Revert "[api] Remove deprecated APIs"
This reverts commit 390456678a8261827cd9a1b5f0c4dc8e4328af07.

PR-URL: #40285
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Jiawen Geng <technicalcute@gmail.com>

common.gypi

@@ -36,7 +36,7 @@
 
     # 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.11',
+    'v8_embedder_string': '-node.12',
 
     ##### V8 defaults for Node.js #####
 

deps/v8/include/v8-internal.h

@@ -36,7 +36,6 @@ const int kApiSystemPointerSize = sizeof(void*);
 const int kApiDoubleSize = sizeof(double);
 const int kApiInt32Size = sizeof(int32_t);
 const int kApiInt64Size = sizeof(int64_t);
-const int kApiSizetSize = sizeof(size_t);
 
 // Tag information for HeapObject.
 const int kHeapObjectTag = 1;
@@ -188,8 +187,6 @@ V8_EXPORT internal::Isolate* IsolateFromNeverReadOnlySpaceObject(Address obj);
 // language mode is strict.
 V8_EXPORT bool ShouldThrowOnError(v8::internal::Isolate* isolate);
 
-V8_EXPORT bool CanHaveInternalField(int instance_type);
-
 /**
  * This class exports constants and functionality from within v8 that
  * is necessary to implement inline functions in the v8 api.  Don't
@@ -236,12 +233,8 @@ class Internals {
       kIsolateFastCCallCallerFpOffset + kApiSystemPointerSize;
   static const int kIsolateFastApiCallTargetOffset =
       kIsolateFastCCallCallerPcOffset + kApiSystemPointerSize;
-  static const int kIsolateCageBaseOffset =
-      kIsolateFastApiCallTargetOffset + kApiSystemPointerSize;
-  static const int kIsolateLongTaskStatsCounterOffset =
-      kIsolateCageBaseOffset + kApiSystemPointerSize;
   static const int kIsolateStackGuardOffset =
-      kIsolateLongTaskStatsCounterOffset + kApiSizetSize;
+      kIsolateFastApiCallTargetOffset + kApiSystemPointerSize;
   static const int kIsolateRootsOffset =
       kIsolateStackGuardOffset + 7 * kApiSystemPointerSize;
 
@@ -268,9 +261,8 @@ class Internals {
   static const int kOddballType = 0x43;
   static const int kForeignType = 0x46;
   static const int kJSSpecialApiObjectType = 0x410;
+  static const int kJSApiObjectType = 0x420;
   static const int kJSObjectType = 0x421;
-  static const int kFirstJSApiObjectType = 0x422;
-  static const int kLastJSApiObjectType = 0x80A;
 
   static const int kUndefinedOddballKind = 5;
   static const int kNullOddballKind = 3;
@@ -375,12 +367,6 @@ class Internals {
     return *reinterpret_cast<void* const*>(addr);
   }
 
-  V8_INLINE static void IncrementLongTasksStatsCounter(v8::Isolate* isolate) {
-    internal::Address addr = reinterpret_cast<internal::Address>(isolate) +
-                             kIsolateLongTaskStatsCounterOffset;
-    ++(*reinterpret_cast<size_t*>(addr));
-  }
-
   V8_INLINE static internal::Address* GetRoot(v8::Isolate* isolate, int index) {
     internal::Address addr = reinterpret_cast<internal::Address>(isolate) +
                              kIsolateRootsOffset +

deps/v8/include/v8-metrics.h

@@ -5,8 +5,7 @@
 #ifndef V8_METRICS_H_
 #define V8_METRICS_H_
 
-#include "v8-internal.h"  // NOLINT(build/include_directory)
-#include "v8.h"           // NOLINT(build/include_directory)
+#include "v8.h"  // NOLINT(build/include_directory)
 
 namespace v8 {
 namespace metrics {
@@ -197,32 +196,6 @@ class V8_EXPORT Recorder {
   static ContextId GetContextId(Local<Context> context);
 };
 
-/**
- * Experimental API intended for the LongTasks UKM (crbug.com/1173527).
- * The Reset() method should be called at the start of a potential
- * long task. The Get() method returns durations of V8 work that
- * happened during the task.
- *
- * This API is experimental and may be removed/changed in the future.
- */
-struct V8_EXPORT LongTaskStats {
-  /**
-   * Resets durations of V8 work for the new task.
-   */
-  V8_INLINE static void Reset(Isolate* isolate) {
-    v8::internal::Internals::IncrementLongTasksStatsCounter(isolate);
-  }
-
-  /**
-   * Returns durations of V8 work that happened since the last Reset().
-   */
-  static LongTaskStats Get(Isolate* isolate);
-
-  int64_t gc_full_atomic_wall_clock_duration_us = 0;
-  int64_t gc_full_incremental_wall_clock_duration_us = 0;
-  int64_t gc_young_wall_clock_duration_us = 0;
-};
-
 }  // namespace metrics
 }  // namespace v8
 

deps/v8/include/v8-platform.h

@@ -181,8 +181,9 @@ class JobDelegate {
   /**
    * Returns true if the current task is called from the thread currently
    * running JobHandle::Join().
+   * TODO(etiennep): Make pure virtual once custom embedders implement it.
    */
-  virtual bool IsJoiningThread() const = 0;
+  virtual bool IsJoiningThread() const { return false; }
 };
 
 /**
@@ -219,21 +220,30 @@ class JobHandle {
    * Forces all existing workers to yield ASAP but doesn’t wait for them.
    * Warning, this is dangerous if the Job's callback is bound to or has access
    * to state which may be deleted after this call.
+   * TODO(etiennep): Cleanup once implemented by all embedders.
    */
-  virtual void CancelAndDetach() = 0;
+  virtual void CancelAndDetach() { Cancel(); }
 
   /**
    * Returns true if there's any work pending or any worker running.
    */
   virtual bool IsActive() = 0;
 
+  // TODO(etiennep): Clean up once all overrides are removed.
+  V8_DEPRECATED("Use !IsActive() instead.")
+  virtual bool IsCompleted() { return !IsActive(); }
+
   /**
    * Returns true if associated with a Job and other methods may be called.
    * Returns false after Join() or Cancel() was called. This may return true
    * even if no workers are running and IsCompleted() returns true
    */
   virtual bool IsValid() = 0;
 
+  // TODO(etiennep): Clean up once all overrides are removed.
+  V8_DEPRECATED("Use IsValid() instead.")
+  virtual bool IsRunning() { return IsValid(); }
+
   /**
    * Returns true if job priority can be changed.
    */
@@ -262,6 +272,10 @@ class JobTask {
    * it must not call back any JobHandle methods.
    */
   virtual size_t GetMaxConcurrency(size_t worker_count) const = 0;
+
+  // TODO(1114823): Clean up once all overrides are removed.
+  V8_DEPRECATED("Use the version that takes |worker_count|.")
+  virtual size_t GetMaxConcurrency() const { return 0; }
 };
 
 /**

deps/v8/include/v8-profiler.h

@@ -289,8 +289,8 @@ class V8_EXPORT CpuProfilingOptions {
    *                             interval, set via SetSamplingInterval(). If
    *                             zero, the sampling interval will be equal to
    *                             the profiler's sampling interval.
-   * \param filter_context If specified, profiles will only contain frames
-   *                       using this context. Other frames will be elided.
+   * \param filter_context Deprecated option to filter by context, currently a
+   *                       no-op.
    */
   CpuProfilingOptions(
       CpuProfilingMode mode = kLeafNodeLineNumbers,
@@ -304,13 +304,9 @@ class V8_EXPORT CpuProfilingOptions {
  private:
   friend class internal::CpuProfile;
 
-  bool has_filter_context() const { return !filter_context_.IsEmpty(); }
-  void* raw_filter_context() const;
-
   CpuProfilingMode mode_;
   unsigned max_samples_;
   int sampling_interval_us_;
-  CopyablePersistentTraits<Context>::CopyablePersistent filter_context_;
 };
 
 /**
@@ -900,6 +896,14 @@ class V8_EXPORT HeapProfiler {
    * Takes a heap snapshot and returns it.
    */
   const HeapSnapshot* TakeHeapSnapshot(
+      ActivityControl* control = nullptr,
+      ObjectNameResolver* global_object_name_resolver = nullptr,
+      bool treat_global_objects_as_roots = true);
+
+  /**
+   * Takes a heap snapshot and returns it.
+   */
+  const HeapSnapshot* TakeHeapSnapshotV8_92(
       ActivityControl* control = nullptr,
       ObjectNameResolver* global_object_name_resolver = nullptr,
       bool treat_global_objects_as_roots = true,