inspector: implement --heap-prof

In addition implements --heap-prof-name, --heap-prof-dir and
--heap-prof-interval.
These flags are similar to --cpu-prof flags but they are meant
for the V8 sampling heap profiler instead of the CPU profiler.

PR-URL: https://github.com/nodejs/node/pull/27596
Fixes: https://github.com/nodejs/node/issues/27421
Reviewed-By: Jan Krems <jan.krems@gmail.com>
Reviewed-By: Anna Henningsen <anna@addaleax.net>

1 files changed, 20 insertions, 0 deletions

diff --git a/src/inspector_profiler.h b/src/inspector_profiler.h
index 345ef90d4e..e7d45d7de3 100644
--- a/src/inspector_profiler.h
+++ b/src/inspector_profiler.h
@@ -107,6 +107,26 @@ class V8CpuProfilerConnection : public V8ProfilerConnection {
   bool ending_ = false;
 };
 
+class V8HeapProfilerConnection : public V8ProfilerConnection {
+ public:
+  explicit V8HeapProfilerConnection(Environment* env)
+      : V8ProfilerConnection(env) {}
+
+  void Start() override;
+  void End() override;
+
+  const char* type() const override { return "heap"; }
+  bool ending() const override { return ending_; }
+
+  std::string GetDirectory() const override;
+  std::string GetFilename() const override;
+  v8::MaybeLocal<v8::Object> GetProfile(v8::Local<v8::Object> result) override;
+
+ private:
+  std::unique_ptr<inspector::InspectorSession> session_;
+  bool ending_ = false;
+};
+
 }  // namespace profiler
 }  // namespace node