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Node v8.getCppHeapStatistics function | API Reference | Bun

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function

v8.getCppHeapStatisticsfunction getCppHeapStatistics(detailLevel?: 'brief' | 'detailed'): object;It returns an object with a structure similar to the cppgc::HeapStatistics object. See the V8 documentation for more information about the properties of the object.

// Detailed ({ committed_size_bytes: 131072, resident_size_bytes: 131072, used_size_bytes: 152, space_statistics: [ { name: 'NormalPageSpace0', committed_size_bytes: 0, resident_size_bytes: 0, used_size_bytes: 0, page_stats: [{}], free_list_stats: {}, }, { name: 'NormalPageSpace1', committed_size_bytes: 131072, resident_size_bytes: 131072, used_size_bytes: 152, page_stats: [{}], free_list_stats: {}, }, { name: 'NormalPageSpace2', committed_size_bytes: 0, resident_size_bytes: 0, used_size_bytes: 0, page_stats: [{}], free_list_stats: {}, }, { name: 'NormalPageSpace3', committed_size_bytes: 0, resident_size_bytes: 0, used_size_bytes: 0, page_stats: [{}], free_list_stats: {}, }, { name: 'LargePageSpace', committed_size_bytes: 0, resident_size_bytes: 0, used_size_bytes: 0, page_stats: [{}], free_list_stats: {}, }, ], type_names: [], detail_level: 'detailed', }); // Brief ({ committed_size_bytes: 131072, resident_size_bytes: 131072, used_size_bytes: 128864, space_statistics: [], type_names: [], detail_level: 'brief', }); @param detailLevelDefault: 'detailed'. Specifies the level of detail in the returned statistics. Accepted values are:

'brief': Brief statistics contain only the top-level allocated and used memory statistics for the entire heap.'detailed': Detailed statistics also contain a break down per space and page, as well as freelist statistics and object type histograms.

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