Program Listing for File event-publisher.h

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#pragma once

#include "runtime/runtime-common.h"

namespace gpa {
namespace runtime {

class EventData;

class GPA_RUNTIME_EXPORT EventPublisher
{
public:
    virtual ~EventPublisher();

    struct GPA_RUNTIME_EXPORT Subscriber
    {
        virtual ~Subscriber();
        virtual void OnEvent(char const* topic, EventData const& event) = 0;
    };

    virtual void Start() = 0;

    virtual void Publish(char const** topics, EventData* event) = 0;

    virtual void Publish(char const* topic, EventData* event) = 0;

    virtual void Subscribe(char const** topics, Subscriber* subscriber) = 0;

    virtual void Unsubscribe(char const** topics, Subscriber* subscriber) = 0;
};

GPA_RUNTIME_EXPORT EventPublisher* GetEventPublisher();

}  // namespace runtime
}  // namespace gpa