diff options
| -rw-r--r-- | src/memory_tracker.h | 18 |
1 files changed, 15 insertions, 3 deletions
diff --git a/src/memory_tracker.h b/src/memory_tracker.h index 673cd811c3..4125f9585f 100644 --- a/src/memory_tracker.h +++ b/src/memory_tracker.h @@ -44,6 +44,13 @@ class NodeBIO; * // Node name and size comes from the MemoryInfoName and SelfSize of * // AnotherRetainerClass * tracker->TrackField("another_retainer", another_retainer_); + * + * // Add non_pointer_retainer as a separate node into the graph + * // and track its memory information recursively. + * // Note that we need to make sure its size is not accounted in + * // ExampleRetainer::SelfSize(). + * tracker->TrackField("non_pointer_retainer", &non_pointer_retainer_); + * * // Specify node name and size explicitly * tracker->TrackFieldWithSize("internal_member", * internal_member_.size(), @@ -60,9 +67,12 @@ class NodeBIO; * return "ExampleRetainer"; * } * - * // Or use SET_SELF_SIZE(ExampleRetainer) + * // Classes that only want to return its sizeof() value can use the + * // SET_SELF_SIZE(Class) macro instead. * size_t SelfSize() const override { - * return sizeof(ExampleRetainer); + * // We need to exclude the size of non_pointer_retainer so that + * // we can track it separately in ExampleRetainer::MemoryInfo(). + * return sizeof(ExampleRetainer) - sizeof(NonPointerRetainerClass); * } * * // Note: no need to implement these two methods when implementing @@ -71,8 +81,10 @@ class NodeBIO; * v8::Local<v8::Object> WrappedObject() const override { * return node::PersistentToLocal::Default(wrapped_); * } + * * private: - * AnotherRetainerClass another_retainer_; + * AnotherRetainerClass* another_retainer_; + * NonPointerRetainerClass non_pointer_retainer; * InternalClass internal_member_; * std::vector<uv_async_t> vector_; * node::Persistent<Object> target_; |