87 lines
2.6 KiB
C++
87 lines
2.6 KiB
C++
/* file ObjectStatistics.hpp
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*
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* author: Roland Conybeare, Aug 2025
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*/
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#pragma once
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#include "xo/indentlog/print/pretty.hpp"
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#include <vector>
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#include <cstdint>
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namespace xo {
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namespace reflect { class TypeDescrBase; }
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namespace gc {
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enum class capture_phase {
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/** snapshot-at-beginning **/
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sab,
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/** snapshot-at-end **/
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sae,
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};
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/** @class PerObjectTypeStatistics
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* @brief statistics for a particular object type
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*
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* Gathered for each leaf type descended from xo::obj::Object.
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* See @ref xo::obj::Object::self_tp
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*
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* See @ref GC::capture_object_statistics
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* (gathers @ref scanned_n_, @ref scanned_z_)
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**/
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struct PerObjectTypeStatistics {
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using TypeDescr = xo::reflect::TypeDescrBase const *;
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void display(std::ostream & os) const;
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/** stats here are for objects of this type **/
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TypeDescr td_ = nullptr;
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/** number of objects scanned **/
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std::size_t scanned_n_ = 0;
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/** number of bytes scanned **/
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std::size_t scanned_z_ = 0;
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/** number of objects surviving **/
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std::size_t survive_n_ = 0;
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/** number of bytes from surviving objects **/
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std::size_t survive_z_ = 0;
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};
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inline std::ostream & operator<< (std::ostream & os, const PerObjectTypeStatistics & x) {
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x.display(os);
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return os;
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}
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/** @class ObjectStatistics
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* @brief placeholder for type-driven allocation statistics
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*
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* Passed to @ref Object::deep_move for example
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**/
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class ObjectStatistics {
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public:
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void display(std::ostream & os) const;
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/** per-object-type statistics, indexed by TypeId **/
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std::vector<PerObjectTypeStatistics> per_type_stats_v_;
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};
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inline std::ostream & operator<< (std::ostream & os, const ObjectStatistics & x) {
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x.display(os);
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return os;
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}
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} /*namespace gc*/
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namespace print {
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template <>
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struct ppdetail<xo::gc::PerObjectTypeStatistics> {
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static bool print_pretty(const ppindentinfo &, const xo::gc::PerObjectTypeStatistics &);
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};
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template <>
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struct ppdetail<xo::gc::ObjectStatistics> {
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static bool print_pretty(const ppindentinfo &, const xo::gc::ObjectStatistics &);
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};
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} /*namespace print*/
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} /*namespace xo*/
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/* end ObjectStatistics.hpp */
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