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GeezerVison is showing github.com — deps: V8: cherry-pick 0f024d4e66e0 · nodejs/node@dae2219

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  • common.gypi
  • deps/v8
    • AUTHORS
    • include
      • v8-profiler.h
    • src/profiler
      • sampling-heap-profiler.cc
    • test/cctest
      • test-heap-profiler.cc
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‎common.gypi‎

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+1-1Lines changed: 1 addition & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -38,7 +38,7 @@
3838

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# Reset this number to 0 on major V8 upgrades.
4040
# Increment by one for each non-official patch applied to deps/v8.
41-
'v8_embedder_string': '-node.18',
41+
'v8_embedder_string': '-node.19',
4242

4343
##### V8 defaults for Node.js #####
4444

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‎deps/v8/AUTHORS‎

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+1Lines changed: 1 addition & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -155,6 +155,7 @@ Huáng Jùnliàng <[email protected]>
155155
HyeockJin Kim <[email protected]>
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Iain Ireland <[email protected]>
157157
Ilya Gavrilin <[email protected]>
158+
Ilyas Shabi <[email protected]>
158159
Ingvar Stepanyan <[email protected]>
159160
Ioseb Dzmanashvili <[email protected]>
160161
Isiah Meadows <[email protected]>
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‎deps/v8/include/v8-profiler.h‎

Copy file name to clipboardExpand all lines: deps/v8/include/v8-profiler.h
+6Lines changed: 6 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -830,6 +830,12 @@ class V8_EXPORT AllocationProfile {
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* what samples were added or removed between two snapshots.
831831
*/
832832
uint64_t sample_id;
833+
834+
/**
835+
* Indicates whether the sampled allocation is still live or has already
836+
* been collected by GC.
837+
*/
838+
bool is_live;
833839
};
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835841
/**
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‎deps/v8/src/profiler/sampling-heap-profiler.cc‎

Copy file name to clipboardExpand all lines: deps/v8/src/profiler/sampling-heap-profiler.cc
+2-1Lines changed: 2 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -312,9 +312,10 @@ SamplingHeapProfiler::BuildSamples() const {
312312
samples.reserve(samples_.size());
313313
for (const auto& it : samples_) {
314314
const Sample* sample = it.second.get();
315+
const bool is_live = !sample->global.IsEmpty();
315316
samples.emplace_back(v8::AllocationProfile::Sample{
316317
sample->owner->id_, sample->size, ScaleSample(sample->size, 1).count,
317-
sample->sample_id});
318+
sample->sample_id, is_live});
318319
}
319320
return samples;
320321
}
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‎deps/v8/test/cctest/test-heap-profiler.cc‎

Copy file name to clipboardExpand all lines: deps/v8/test/cctest/test-heap-profiler.cc
+76Lines changed: 76 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -4442,6 +4442,82 @@ TEST(SamplingHeapProfilerLargeInterval) {
44424442
heap_profiler->StopSamplingHeapProfiler();
44434443
}
44444444

4445+
TEST(SamplingHeapProfilerSampleWithoutGCFlags) {
4446+
v8::HandleScope scope(CcTest::isolate());
4447+
LocalContext env;
4448+
v8::HeapProfiler* heap_profiler = env.isolate()->GetHeapProfiler();
4449+
4450+
// Suppress randomness to avoid flakiness in tests.
4451+
i::v8_flags.sampling_heap_profiler_suppress_randomness = true;
4452+
4453+
heap_profiler->StartSamplingHeapProfiler(1024);
4454+
4455+
// Allocate objects that will be retained
4456+
CompileRun(
4457+
"var retained = [];\n"
4458+
"for (var i = 0; i < 500; i++) retained.push(new Array(10));\n");
4459+
4460+
CompileRun("for (var i = 0; i < 500; i++) new Array(10);\n");
4461+
4462+
std::unique_ptr<v8::AllocationProfile> profile(
4463+
heap_profiler->GetAllocationProfile());
4464+
CHECK(profile);
4465+
4466+
const auto& samples = profile->GetSamples();
4467+
CHECK(!samples.empty());
4468+
4469+
for (const auto& sample : samples) {
4470+
CHECK(sample.is_live);
4471+
}
4472+
4473+
heap_profiler->StopSamplingHeapProfiler();
4474+
}
4475+
4476+
TEST(SamplingHeapProfilerSampleIsLive) {
4477+
v8::HandleScope scope(CcTest::isolate());
4478+
LocalContext env;
4479+
v8::HeapProfiler* heap_profiler = env.isolate()->GetHeapProfiler();
4480+
4481+
// Suppress randomness to avoid flakiness in tests.
4482+
i::v8_flags.sampling_heap_profiler_suppress_randomness = true;
4483+
4484+
heap_profiler->StartSamplingHeapProfiler(
4485+
64, 16,
4486+
static_cast<v8::HeapProfiler::SamplingFlags>(
4487+
v8::HeapProfiler::kSamplingForceGC |
4488+
v8::HeapProfiler::kSamplingIncludeObjectsCollectedByMajorGC));
4489+
4490+
// Allocate objects that will be retained
4491+
CompileRun(
4492+
"var retained = [];\n"
4493+
"for (var i = 0; i < 500; i++) retained.push(new Array(10));\n");
4494+
4495+
CompileRun("for (var i = 0; i < 500; i++) new Array(10);\n");
4496+
4497+
std::unique_ptr<v8::AllocationProfile> profile(
4498+
heap_profiler->GetAllocationProfile());
4499+
CHECK(profile);
4500+
4501+
const auto& samples = profile->GetSamples();
4502+
CHECK(!samples.empty());
4503+
4504+
int live_samples = 0;
4505+
int dead_samples = 0;
4506+
for (const auto& sample : samples) {
4507+
if (sample.is_live) {
4508+
++live_samples;
4509+
} else {
4510+
++dead_samples;
4511+
}
4512+
}
4513+
4514+
// We expect both retained and collected allocations in this profile.
4515+
CHECK_GT(live_samples, 0);
4516+
CHECK_GT(dead_samples, 0);
4517+
4518+
heap_profiler->StopSamplingHeapProfiler();
4519+
}
4520+
44454521
TEST(HeapSnapshotPrototypeNotJSReceiver) {
44464522
LocalContext env;
44474523
v8::HandleScope scope(env.isolate());

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