AsyncCallList.h

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/*
 * Copyright (C) 1996-2022 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_BASE_ASYNCCALLLIST_H
#define SQUID_BASE_ASYNCCALLLIST_H
 
#include "base/forward.h"
#include "base/RefCount.h"
 
class AsyncCallList
{
public:
    AsyncCallList() = default;
    // prohibit copying: no AsyncCall should be present in two lists
    AsyncCallList(const AsyncCallList &) = delete;
    AsyncCallList &operator=(const AsyncCallList &) = delete;
 
    void add(const AsyncCallPointer &);
 
    AsyncCallPointer extract();
 
    size_t size() const { return length; }
 
private:
    AsyncCallPointer head; 
    AsyncCallPointer tail; 
    size_t length = 0; 
};
 
#endif /* SQUID_BASE_ASYNCCALLLIST_H */