pine_adapter_probe.hpp

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#pragma once
 
#include "pine_host_reads.hpp"
 
#include <array>
#include <cstddef>
 
namespace pineforge::source::detail {
 
// Pure reader: no unordered-map operator[], only size() and iteration over
// values into std::array counters. No allocation, no mutation, nothing hashed.
// The three slots are ExitLimit, ExitStop and ExitTrail, in that order.
struct LookupIndexCounts {
    bool present = false;
    std::size_t cohort_sides = 0;
    std::size_t unbound = 0;
    std::array<std::size_t, 3> legs_by_origin_keys{};
    std::array<std::size_t, 3> legs_by_origin_ids{};
    std::size_t immediate_closes_keys = 0;
    std::size_t immediate_closes_ids = 0;
};
 
LookupIndexCounts probe_lookup_index(const NativeHostCache* cache) noexcept;
 
} // namespace pineforge::source::detail