#pragma once

#include <cstddef>
#include <functional>

namespace fesa {

// Executes independent index-addressed work without exposing the backend.
// Callers own output storage and must confine each invocation to its index.
class ParallelFor {
public:
    virtual ~ParallelFor() = default;
    virtual void execute(
        std::size_t count,
        const std::function<void(std::size_t)>& body) const = 0;
};

class SerialParallelFor final : public ParallelFor {
public:
    void execute(
        std::size_t count,
        const std::function<void(std::size_t)>& body) const override;
};

class TbbParallelFor final : public ParallelFor {
public:
    void execute(
        std::size_t count,
        const std::function<void(std::size_t)>& body) const override;
};

} // namespace fesa