xo-interpreter2 stack: cleanup memory reporting

This commit is contained in:
Roland Conybeare 2026-02-03 11:55:50 -05:00
commit 0e6afabaa3
11 changed files with 66 additions and 17 deletions

View file

@ -31,6 +31,12 @@ namespace xo {
return copy;
}
ArenaConfig with_store_header_flag(bool x) const {
ArenaConfig copy(*this);
copy.store_header_flag_ = x;
return copy;
}
/** @defgroup mm-arenaconfig-instance-vars ArenaConfig members **/
///@{
@ -44,7 +50,7 @@ namespace xo {
std::size_t hugepage_z_ = 2 * 1024 * 1024;
/** true to store header (8 bytes) at the beginning of each allocation.
* necessary and sufficient to allows iterating over allocs
* present in arena
* present in arena.
**/
bool store_header_flag_ = false;
/** configuration for per-alloc header **/

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@ -205,7 +205,7 @@ namespace xo {
void establish_initial_guard() noexcept;
/** checkpoint arena state. Revert to the same state with
* @ref rstore
* @ref restore
**/
Checkpoint checkpoint() noexcept { return Checkpoint(free_); }

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@ -30,8 +30,10 @@ namespace xo {
*
* Replicates (to the extent feasible) std::unordered_map<K,V>
*
* @tparam K key type.
* @tparam V value type.
* @tparam Key key type.
* @tparam Value value type.
* @tparam Hash hash function for keys
* @tparam Equal equality function for keys
**/
template <typename Key,
typename Value,

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@ -114,6 +114,7 @@ namespace xo {
private:
size_type size_ = 0;
DArena store_;
DArena::Checkpoint zero_ckp_;
};
template <typename T>
@ -122,14 +123,16 @@ namespace xo {
size_type arena_align_z,
DArena::value_type lo,
DArena::value_type hi)
: store_{cfg, page_z, arena_align_z, lo, hi}
: store_{cfg, page_z, arena_align_z, lo, hi},
zero_ckp_{store_.checkpoint()}
{}
template <typename T>
DArenaVector<T>::DArenaVector(DArenaVector && other)
: size_{other.size_}, store_{std::move(other.store_)}
: size_{other.size_}, store_{std::move(other.store_)}, zero_ckp_{std::move(other.zero_ckp_)}
{
other.size_ = 0;
other.zero_ckp_ = DArena::Checkpoint();
}
template <typename T>
@ -153,8 +156,10 @@ namespace xo {
{
this->size_ = other.size_;
this->store_ = std::move(other.store_);
this->zero_ckp_ = std::move(other.zero_ckp_);
other.size_ = 0;
other.zero_ckp_ = DArena::Checkpoint();
return *this;
}
@ -166,6 +171,7 @@ namespace xo {
DArenaVector<T> retval;
retval.store_ = std::move(DArena::map(cfg));
retval.zero_ckp_ = retval.store_.checkpoint();
return retval;
}
@ -179,9 +185,11 @@ namespace xo {
template <typename T>
void
DArenaVector<T>::resize(size_type z) {
// new arena size in bytes
size_t req_z = z * sizeof(T);
if (z > size_) {
// expand arena to accomodate
size_t req_z = z * sizeof(T);
store_.expand(req_z);
@ -208,6 +216,14 @@ namespace xo {
}
}
// rewind to checkpoint, then reallocate.
// This is for form's sake, so that DArena considers memory
// to be 'allocated'. DArenaVector<T> doesn't care for itself,
// but this preserves expected behavior of visit_pools().
//
store_.restore(zero_ckp_);
store_.alloc(xo::reflect::typeseq::id<std::byte>(), req_z);
this->size_ = z;
}

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@ -33,11 +33,13 @@ namespace xo {
control_{control_vector_type::map
(xo::mm::ArenaConfig{
.name_ = name + "-ctl",
.size_ = control_size(n_slot_)})},
.size_ = control_size(n_slot_),
.store_header_flag_ = false})},
slots_{slot_vector_type::map
(xo::mm::ArenaConfig{
.name_ = name + "-slots",
.size_ = n_slot_ * sizeof(value_type)})}
.size_ = n_slot_ * sizeof(value_type),
.store_header_flag_ = false})}
{
/* here: arenas have allocated address range, but no committed memory yet */

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@ -10,6 +10,7 @@
#include "facet_implementation.hpp"
#include "typeseq.hpp"
#include "obj.hpp"
#include <xo/arena/DArenaHashMap.hpp>
#include <xo/indentlog/scope.hpp>
#include <xo/indentlog/print/tostr.hpp>
#include <unordered_map>
@ -38,6 +39,7 @@ namespace xo {
**/
class FacetRegistry {
public:
using MemorySizeVisitor = xo::mm::MemorySizeVisitor;
using typeseq = xo::reflect::typeseq;
using key_type = std::pair<typeseq, typeseq>;
@ -51,9 +53,12 @@ namespace xo {
}
};
/** singleton instance **/
static FacetRegistry & instance() {
static FacetRegistry s_instance;
/** singleton instance.
* @p hint_max_capacity is a lower bound for swiss hash map implementation.
* Only honored the first time instance is called.
**/
static FacetRegistry & instance(uint32_t hint_max_capacity = 1024) {
static FacetRegistry s_instance(hint_max_capacity);
return s_instance;
}
@ -88,6 +93,11 @@ namespace xo {
/** Number of registered (facet, repr) pairs **/
std::size_t size() const { return registry_.size(); }
/** visit memory pools owned by facet registry **/
void visit_pools(const MemorySizeVisitor & visitor) {
registry_.visit_pools(visitor);
}
/** Check if implementation is registered **/
bool contains(typeseq facet_id,
typeseq repr_id) const
@ -221,10 +231,12 @@ namespace xo {
}
private:
FacetRegistry() = default;
FacetRegistry(uint32_t hint_max_capacity)
: registry_("facets", hint_max_capacity, false /*!debug_flag*/) {}
/** runtime lookup table (AFacet,DRepr) -> impl **/
std::unordered_map<key_type, const void *, KeyHash> registry_;
xo::map::DArenaHashMap<key_type, const void *, KeyHash> registry_;
//std::unordered_map<key_type, const void *, KeyHash> registry_;
};
} /*namespace facet*/

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@ -29,6 +29,7 @@ namespace xo {
using xo::scm::DFloat;
using xo::mm::AGCObject;
using xo::mm::MemorySizeInfo;
using xo::facet::FacetRegistry;
using span_type = xo::scm::VirtualSchematikaMachine::span_type;
using Catch::Matchers::WithinAbs;
@ -84,6 +85,7 @@ namespace xo {
xtag("resv", info.reserved_));
};
FacetRegistry::instance().visit_pools(visitor);
vsm.visit_pools(visitor);
}

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@ -3,6 +3,7 @@
* @author Roland Conybeare, Jan 2026
**/
#include <xo/facet/FacetRegistry.hpp>
#include <xo/subsys/Subsystem.hpp>
#define CATCH_CONFIG_RUNNER
@ -11,8 +12,12 @@
int
main(int argc, char* argv[])
{
using xo::facet::FacetRegistry;
using xo::Subsystem;
// initialize facet registry
FacetRegistry::instance(1024);
// initialize subsystems
Subsystem::initialize_all();

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@ -1,5 +1,5 @@
/** @file init_object2.hpp
*
*
* @author Roland Conybeare, Jan 2026
**/

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@ -1,5 +1,5 @@
/** @file init_object2.cpp
*
*
* @author Roland Conybeare, Jan 2026
**/

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@ -16,6 +16,10 @@ namespace xo {
*/
template<typename Tag = class typeseq_tag>
struct typeseq_impl {
/** create sentinel value **/
typeseq_impl() = default;
/** typeseq with specific unique id **/
explicit typeseq_impl(int32_t s) : seqno_{s} {}
/** Can't have this be constexpr.
@ -56,7 +60,7 @@ namespace xo {
private:
static int32_t s_next_id;
int32_t seqno_;
int32_t seqno_ = 0;
};
template <typename Tag>