it::d4np::memorypool::PoolObserver Struct Reference

Observer of pool-lifecycle events (the GoF Observer — ADR-0026). More...

#include <instrumented_pool.hpp>

Public Member Functions
	PoolObserver (const PoolObserver &)=default
	PoolObserver (PoolObserver &&)=default
PoolObserver &	operator= (const PoolObserver &)=default
PoolObserver &	operator= (PoolObserver &&)=default
virtual void	on_pool_event (PoolEvent event, const PoolStats &stats) noexcept=0
	Called once per event, with a snapshot of the pool's counters.

Detailed Description

Observer of pool-lifecycle events (the GoF Observer — ADR-0026).

Register a concrete observer with InstrumentedPool::add_observer; it is notified on the calling thread. Notification is not internally synchronized (ADR-0026 §4) — register before concurrent use and make observers thread-safe, or observe single-threaded. The observer must out-live the InstrumentedPool it is attached to (the subject stores a non-owning pointer).

Definition at line 74 of file instrumented_pool.hpp.

Member Function Documentation

on_pool_event()

virtual void it::d4np::memorypool::PoolObserver::on_pool_event ( PoolEvent  event, const PoolStats &  stats  )

pure virtualnoexcept

Called once per event, with a snapshot of the pool's counters.

noexcept by contract — an event handler must not throw (it may be invoked from the noexcept try_allocate and from the destructor); a throwing handler terminates, like a throwing destructor.

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The documentation for this struct was generated from the following file:

• src/main/cpp/it/d4np/memorypool/instrumented_pool.hpp