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// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
// vim: ts=8 sw=2 smarttab
/*
* Ceph - scalable distributed file system
*
* Copyright (C) 2013 Inktank Storage, Inc.
*
* This is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License version 2.1, as published by the Free Software
* Foundation. See file COPYING.
*
*/
#ifndef CEPH_TRACKEDINTPTR_H
#define CEPH_TRACKEDINTPTR_H
template <class T>
class TrackedIntPtr {
T *ptr;
uint64_t id;
public:
TrackedIntPtr() : ptr(NULL), id(0) {}
TrackedIntPtr(T *ptr) : ptr(ptr), id(ptr ? get_with_id(ptr) : 0) {}
~TrackedIntPtr() {
if (ptr)
put_with_id(ptr, id);
else
ceph_assert(id == 0);
}
void swap(TrackedIntPtr &other) {
T *optr = other.ptr;
uint64_t oid = other.id;
other.ptr = ptr;
other.id = id;
ptr = optr;
id = oid;
}
TrackedIntPtr(const TrackedIntPtr &rhs) :
ptr(rhs.ptr), id(ptr ? get_with_id(ptr) : 0) {}
TrackedIntPtr& operator=(const TrackedIntPtr &rhs) {
TrackedIntPtr o(rhs.ptr);
swap(o);
return *this;
}
T &operator*() const {
return *ptr;
}
T *operator->() const {
return ptr;
}
T *get() const { return ptr; }
operator bool() const {
return ptr != NULL;
}
bool operator<(const TrackedIntPtr &lhs) const {
return ptr < lhs.ptr;
}
bool operator==(const TrackedIntPtr &lhs) const {
return ptr == lhs.ptr;
}
void reset() {
if (ptr)
put_with_id(ptr, id);
ptr = nullptr;
id = 0;
}
};
#endif
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