struct dnnl::threadpool_interop::threadpool_event_iface_t

Overview

Completion event interface for async threadpool work. More…

#include <dnnl_threadpool_iface.hpp>

struct threadpool_event_iface_t
{
    // methods

    virtual bool is_complete() const = 0;
    virtual void wait() const = 0;
    virtual double exec_time_ms() const = 0;
};

Detailed Documentation

Completion event interface for async threadpool work. oneDNN’s verbose profiler polls these to determine when deferred execution has finished and to extract timing information.

Methods

virtual bool is_complete() const = 0

Returns true if the associated work has completed.

virtual void wait() const = 0

Blocks until completion.

virtual double exec_time_ms() const = 0

Measured execution time in milliseconds. Valid only after completion. Should reflect wall-clock duration from when the first worker begins to when the last worker finishes. Use a compare-and-swap atomic operation to stamp the start time so only the first worker records the asynchronous completion callback once all workers have finished.