v8
9.0.257(node16.0.0)
V8 is Google's open source JavaScript engine

#include <heapstatistics.h>
Data Structures  
struct  FreeListStatistics 
struct  ObjectStatistics 
struct  PageStatistics 
struct  SpaceStatistics 
Public Types  
enum  DetailLevel : uint8_t { kBrief, kDetailed } 
Data Fields  
size_t  physical_size_bytes = 0 
size_t  used_size_bytes = 0 
DetailLevel  detail_level 
std::vector< SpaceStatistics >  space_stats 
HeapStatistics
contains memory consumption and utilization statistics for a cppgc heap.
Definition at line 18 of file heapstatistics.h.
enum DetailLevel : uint8_t 
Specifies the detail level of the heap statistics. Brief statistics contain only the toplevel allocated and used memory statistics for the entire heap. Detailed statistics also contain a break down per space and page, as well as freelist statistics and object type histograms. Note that used memory reported by brief statistics and detailed statistics might differ slightly.
Enumerator  

kBrief  
kDetailed 
Definition at line 27 of file heapstatistics.h.
DetailLevel detail_level 
Detail level of this HeapStatistics.
Definition at line 101 of file heapstatistics.h.
size_t physical_size_bytes = 0 
Overall amount of memory allocated for the heap.
Definition at line 97 of file heapstatistics.h.
std::vector<SpaceStatistics> space_stats 
Statistics for each of the spaces in the heap. Filled only when detail_level is kDetailed.
Definition at line 105 of file heapstatistics.h.
size_t used_size_bytes = 0 
Amount of memory actually used on the heap.
Definition at line 99 of file heapstatistics.h.