task_runner.h

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// Copyright (c) 2024-present The Bitcoin Core developers
// Distributed under the MIT software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
#ifndef BITCOIN_UTIL_TASK_RUNNER_H
#define BITCOIN_UTIL_TASK_RUNNER_H
 
#include <cstddef>
#include <functional>
 
namespace util {
 
class TaskRunnerInterface {
public:
    virtual ~TaskRunnerInterface() {}
 
    virtual void insert(std::function<void()> func) = 0;
 
    virtual void flush() = 0;
 
    virtual size_t size() = 0;
};
 
class ImmediateTaskRunner : public TaskRunnerInterface {
public:
    void insert(std::function<void()> func) override { func(); }
    void flush() override {}
    size_t size() override { return 0; }
};
 
} // namespace util
 
#endif // BITCOIN_UTIL_TASK_RUNNER_H