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chronon::observe::Counter

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#include <LocalCounter.hpp>

Public Functions​

Name
~Counter() =default
const std::string &unit() const
voidreset()
Counter &operator=(const Counter & ) =delete
Counter &operator=(Counter && other)
Counter &operator+=(uint64_t delta)
Counter &operator++()
const std::string &name() const
boolisRegistered() const
CounterIdid() const
uint64_tget() const
const std::string &description() const
Counter(ObservableUnit * owner, std::string_view name, std::string_view description ="", std::string_view unit ="")
Counter(counter_detail::InternalConstructionTag , ObservableUnit * owner, std::string_view name, std::string_view description ="", std::string_view unit ="")
Counter(const Counter & ) =delete
Counter(Counter && other)

Friends​

Name
classObservableUnit

Detailed Description​

class chronon::observe::Counter;

Counter - Per-instance counter declared as a unit member.

Each unit instance has its own counter with separate values:

  • Counter names include the unit's hierarchical path (e.g., "cpu0.alu0.ops")
  • Fast increment path (~2-3ns) via direct context access

Usage:

class ALU : public TickableUnit, public ObservableUnit {
    Counter ops_{this, "ops", "Operations executed"};
    Counter stalls_{this, "stalls", "Stall cycles"};

    void tick() override {
        ++ops_;          // Fast: ~2-3ns
        stalls_ += 5;    // Add 5
    }
};

Output (CSV):

cycle,unit_name,counter_name,value
10000,cpu0.alu0,ops,2500
10000,cpu0.alu1,ops,2400
10000,cpu1.alu0,ops,2550

Public Functions Documentation​

function ~Counter​

~Counter() =default

function unit​

inline const std::string & unit() const

function reset​

inline void reset()

function operator=​

Counter & operator=(
    const Counter & 
) =delete

function operator=​

Counter & operator=(
    Counter && other
)

function operator+=​

inline Counter & operator+=(
    uint64_t delta
)

function operator++​

inline Counter & operator++()

function name​

inline const std::string & name() const

function isRegistered​

inline bool isRegistered() const

function id​

inline CounterId id() const

function get​

inline uint64_t get() const

function description​

inline const std::string & description() const

function Counter​

Counter(
    ObservableUnit * owner,
    std::string_view name,
    std::string_view description ="",
    std::string_view unit =""
)

Parameters:

  • owner The ObservableUnit that owns this counter
  • name Counter name (will be prefixed with unit path)
  • description Counter description
  • unit Unit of measurement (e.g., "ops", "cycles", "bytes")

Construct a counter.

function Counter​

Counter(
    counter_detail::InternalConstructionTag ,
    ObservableUnit * owner,
    std::string_view name,
    std::string_view description ="",
    std::string_view unit =""
)

function Counter​

Counter(
    const Counter & 
) =delete

function Counter​

Counter(
    Counter && other
)

Friends​

friend ObservableUnit​

friend class ObservableUnit(
    ObservableUnit 
);

Updated on 2026-07-06 at 09:03:34 +0000