RequestId.h

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/*
 * Copyright (C) 1996-2023 The Squid Software Foundation and contributors
 *
 * Squid software is distributed under GPLv2+ license and includes
 * contributions from numerous individuals and organizations.
 * Please see the COPYING and CONTRIBUTORS files for details.
 */
 
#ifndef SQUID_IPC_REQUESTID_H
#define SQUID_IPC_REQUESTID_H
 
#include "ipc/forward.h"
#include "ipc/QuestionerId.h"
 
#include <iosfwd>
 
namespace Ipc
{
 
class RequestId
{
public:
    typedef unsigned int Index;
 
    explicit RequestId(Index);
 
    RequestId() = default;
 
    void reset() { index_ = 0; }
 
    void reset(const Index anIndex) { *this = RequestId(anIndex); }
 
    QuestionerId questioner() const { return qid_; }
    Index index() const { return index_; }
 
    // these conversion operators allow our users to treat us as an Index
    operator Index() const { return index_; }
    RequestId &operator =(const Index anIndex) { anIndex ? reset(anIndex) : reset(); return *this; }
 
private:
    QuestionerId qid_;
 
    Index index_ = 0;
};
 
std::ostream &operator <<(std::ostream &, const RequestId &);
 
} // namespace Ipc;
 
#endif /* SQUID_IPC_REQUESTID_H */