diff --git a/common.gypi b/common.gypi index 33b1325eb513ea..4745bb5ac77639 100644 --- a/common.gypi +++ b/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.16', + 'v8_embedder_string': '-node.17', ##### V8 defaults for Node.js ##### diff --git a/deps/v8/src/api/api.cc b/deps/v8/src/api/api.cc index 169c9bd7f90cea..3b6226b0f438d3 100644 --- a/deps/v8/src/api/api.cc +++ b/deps/v8/src/api/api.cc @@ -10745,7 +10745,8 @@ static i::HeapSnapshot* ToInternal(const HeapSnapshot* snapshot) { void HeapSnapshot::Delete() { i::Isolate* isolate = ToInternal(this)->profiler()->isolate(); - if (isolate->heap_profiler()->GetSnapshotsCount() > 1) { + if (isolate->heap_profiler()->GetSnapshotsCount() > 1 || + isolate->heap_profiler()->IsTakingSnapshot()) { ToInternal(this)->Delete(); } else { // If this is the last snapshot, clean up all accessory data as well. diff --git a/deps/v8/src/profiler/heap-profiler.cc b/deps/v8/src/profiler/heap-profiler.cc index f063fd1f476ad3..fc9bd00f47dd0f 100644 --- a/deps/v8/src/profiler/heap-profiler.cc +++ b/deps/v8/src/profiler/heap-profiler.cc @@ -18,7 +18,8 @@ namespace internal { HeapProfiler::HeapProfiler(Heap* heap) : ids_(new HeapObjectsMap(heap)), names_(new StringsStorage()), - is_tracking_object_moves_(false) {} + is_tracking_object_moves_(false), + is_taking_snapshot_(false) {} HeapProfiler::~HeapProfiler() = default; @@ -28,7 +29,8 @@ void HeapProfiler::DeleteAllSnapshots() { } void HeapProfiler::MaybeClearStringsStorage() { - if (snapshots_.empty() && !sampling_heap_profiler_ && !allocation_tracker_) { + if (snapshots_.empty() && !sampling_heap_profiler_ && !allocation_tracker_ && + !is_taking_snapshot_) { names_.reset(new StringsStorage()); } } @@ -66,6 +68,7 @@ HeapSnapshot* HeapProfiler::TakeSnapshot( v8::ActivityControl* control, v8::HeapProfiler::ObjectNameResolver* resolver, bool treat_global_objects_as_roots) { + is_taking_snapshot_ = true; HeapSnapshot* result = new HeapSnapshot(this, treat_global_objects_as_roots); { HeapSnapshotGenerator generator(result, control, resolver, heap()); @@ -78,6 +81,7 @@ HeapSnapshot* HeapProfiler::TakeSnapshot( } ids_->RemoveDeadEntries(); is_tracking_object_moves_ = true; + is_taking_snapshot_ = false; heap()->isolate()->debug()->feature_tracker()->Track( DebugFeatureTracker::kHeapSnapshot); @@ -138,10 +142,12 @@ void HeapProfiler::StopHeapObjectsTracking() { } } -int HeapProfiler::GetSnapshotsCount() { +int HeapProfiler::GetSnapshotsCount() const { return static_cast(snapshots_.size()); } +bool HeapProfiler::IsTakingSnapshot() const { return is_taking_snapshot_; } + HeapSnapshot* HeapProfiler::GetSnapshot(int index) { return snapshots_.at(index).get(); } diff --git a/deps/v8/src/profiler/heap-profiler.h b/deps/v8/src/profiler/heap-profiler.h index 0d964b5c5d606a..21d9bb8fcfd815 100644 --- a/deps/v8/src/profiler/heap-profiler.h +++ b/deps/v8/src/profiler/heap-profiler.h @@ -49,7 +49,8 @@ class HeapProfiler : public HeapObjectAllocationTracker { SnapshotObjectId PushHeapObjectsStats(OutputStream* stream, int64_t* timestamp_us); - int GetSnapshotsCount(); + int GetSnapshotsCount() const; + bool IsTakingSnapshot() const; HeapSnapshot* GetSnapshot(int index); SnapshotObjectId GetSnapshotObjectId(Handle obj); SnapshotObjectId GetSnapshotObjectId(NativeObject obj); @@ -93,6 +94,7 @@ class HeapProfiler : public HeapObjectAllocationTracker { std::unique_ptr names_; std::unique_ptr allocation_tracker_; bool is_tracking_object_moves_; + bool is_taking_snapshot_; base::Mutex profiler_mutex_; std::unique_ptr sampling_heap_profiler_; std::vector> diff --git a/deps/v8/test/cctest/test-heap-profiler.cc b/deps/v8/test/cctest/test-heap-profiler.cc index 63c88ae9b2b686..8a04ec4bc54c2d 100644 --- a/deps/v8/test/cctest/test-heap-profiler.cc +++ b/deps/v8/test/cctest/test-heap-profiler.cc @@ -4126,3 +4126,40 @@ TEST(Bug8373_2) { heap_profiler->StopTrackingHeapObjects(); } + +TEST(HeapSnapshotDeleteDuringTakeSnapshot) { + // Check that a heap snapshot can be deleted during GC while another one + // is being taken. + + LocalContext env; + v8::HandleScope scope(env->GetIsolate()); + v8::HeapProfiler* heap_profiler = env->GetIsolate()->GetHeapProfiler(); + int gc_calls = 0; + v8::Global handle; + + { + struct WeakData { + const v8::HeapSnapshot* snapshot; + int* gc_calls; + v8::Global* handle; + }; + WeakData* data = + new WeakData{heap_profiler->TakeHeapSnapshot(), &gc_calls, &handle}; + + v8::HandleScope scope(env->GetIsolate()); + handle.Reset(env->GetIsolate(), v8::Object::New(env->GetIsolate())); + handle.SetWeak( + data, + [](const v8::WeakCallbackInfo& data) { + std::unique_ptr weakdata{data.GetParameter()}; + const_cast(weakdata->snapshot)->Delete(); + ++*weakdata->gc_calls; + weakdata->handle->Reset(); + }, + v8::WeakCallbackType::kParameter); + } + CHECK_EQ(gc_calls, 0); + + CHECK(ValidateSnapshot(heap_profiler->TakeHeapSnapshot())); + CHECK_EQ(gc_calls, 1); +}