MySQL 8.3.0
Source Code Documentation
my_ref_counted.h
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1/* Copyright (c) 2016, 2023, Oracle and/or its affiliates.
2
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5as published by the Free Software Foundation.
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15but WITHOUT ANY WARRANTY; without even the implied warranty of
16MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17GNU General Public License, version 2.0, for more details.
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21Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */
22
23#ifndef MY_REF_COUNTED_H
24#define MY_REF_COUNTED_H
25
26#include <atomic>
27
28#include "my_inttypes.h"
29
30/**
31 Helper class for reference counting.
32*/
34 public:
37 virtual ~my_ref_counted();
39 bool release_reference(uint64 *new_count = nullptr);
41
42 private:
43 /** the reference count value */
44 std::atomic<uint64> m_count;
45};
46
47#endif /* MY_REF_COUNTED_H */
Helper class for reference counting.
Definition: my_ref_counted.h:33
std::atomic< uint64 > m_count
the reference count value
Definition: my_ref_counted.h:44
bool release_reference(uint64 *new_count=nullptr)
Decreases a reference count.
Definition: my_ref_counted.cc:51
uint64 get_reference_count() const
Returns the reference counter value.
Definition: my_ref_counted.cc:70
virtual ~my_ref_counted()
uint64 add_reference()
Increases a reference count.
Definition: my_ref_counted.cc:40
my_ref_counted()
default constructor
Definition: my_ref_counted.cc:26
Some integer typedefs for easier portability.
uint64_t uint64
Definition: my_inttypes.h:68