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feat: add process.takeHeapSnapshot() / webContents.takeHeapSnapshot()
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// Copyright (c) 2018 GitHub, Inc. | ||
// Use of this source code is governed by the MIT license that can be | ||
// found in the LICENSE file. | ||
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#include "atom/common/heap_snapshot.h" | ||
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#include "v8/include/v8-profiler.h" | ||
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namespace { | ||
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class HeapSnapshotOutputStream : public v8::OutputStream { | ||
public: | ||
explicit HeapSnapshotOutputStream(base::File* file) : file_(file) { | ||
DCHECK(file_); | ||
} | ||
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bool IsComplete() const { return is_complete_; } | ||
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// v8::OutputStream | ||
int GetChunkSize() override { return 65536; } | ||
void EndOfStream() override { is_complete_ = true; } | ||
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v8::OutputStream::WriteResult WriteAsciiChunk(char* data, int size) override { | ||
auto bytes_written = file_->WriteAtCurrentPos(data, size); | ||
return bytes_written == size ? kContinue : kAbort; | ||
} | ||
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private: | ||
base::File* file_ = nullptr; | ||
bool is_complete_ = false; | ||
}; | ||
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} // namespace | ||
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namespace atom { | ||
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bool TakeHeapSnapshot(v8::Isolate* isolate, base::File* file) { | ||
DCHECK(isolate); | ||
DCHECK(file); | ||
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if (!file->IsValid()) | ||
return false; | ||
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auto* snapshot = isolate->GetHeapProfiler()->TakeHeapSnapshot(); | ||
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HeapSnapshotOutputStream stream(file); | ||
snapshot->Serialize(&stream, v8::HeapSnapshot::kJSON); | ||
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const_cast<v8::HeapSnapshot*>(snapshot)->Delete(); | ||
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return stream.IsComplete(); | ||
} | ||
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} // namespace atom |
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Original file line number | Diff line number | Diff line change |
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// Copyright (c) 2018 GitHub, Inc. | ||
// Use of this source code is governed by the MIT license that can be | ||
// found in the LICENSE file. | ||
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#ifndef ATOM_COMMON_HEAP_SNAPSHOT_H_ | ||
#define ATOM_COMMON_HEAP_SNAPSHOT_H_ | ||
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#include "base/files/file.h" | ||
#include "v8/include/v8.h" | ||
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namespace atom { | ||
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bool TakeHeapSnapshot(v8::Isolate* isolate, base::File* file); | ||
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} // namespace atom | ||
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#endif // ATOM_COMMON_HEAP_SNAPSHOT_H_ |
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