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juce_LeakedObjectDetector.h
1/*
2 ==============================================================================
3
4 This file is part of the JUCE library.
5 Copyright (c) 2022 - Raw Material Software Limited
6
7 JUCE is an open source library subject to commercial or open-source
8 licensing.
9
10 The code included in this file is provided under the terms of the ISC license
11 http://www.isc.org/downloads/software-support-policy/isc-license. Permission
12 To use, copy, modify, and/or distribute this software for any purpose with or
13 without fee is hereby granted provided that the above copyright notice and
14 this permission notice appear in all copies.
15
16 JUCE IS PROVIDED "AS IS" WITHOUT ANY WARRANTY, AND ALL WARRANTIES, WHETHER
17 EXPRESSED OR IMPLIED, INCLUDING MERCHANTABILITY AND FITNESS FOR PURPOSE, ARE
18 DISCLAIMED.
19
20 ==============================================================================
21*/
22
23 namespace juce
24{
25
26//==============================================================================
41 template <class OwnerClass>
42 class LeakedObjectDetector
43{
44 public:
45 //==============================================================================
46 LeakedObjectDetector() noexcept { ++(getCounter().numObjects); }
47 LeakedObjectDetector (const LeakedObjectDetector&) noexcept { ++(getCounter().numObjects); }
48
49 LeakedObjectDetector& operator= (const LeakedObjectDetector&) noexcept = default;
50
51 ~LeakedObjectDetector()
52 {
53 if (--(getCounter().numObjects) < 0)
54 {
55 DBG ("*** Dangling pointer deletion! Class: " << getLeakedObjectClassName());
56
68 jassertfalse;
69 }
70 }
71
72 private:
73 //==============================================================================
74 class LeakCounter
75 {
76 public:
77 LeakCounter() = default;
78
79 ~LeakCounter()
80 {
81 if (numObjects.value > 0)
82 {
83 DBG ("*** Leaked objects detected: " << numObjects.value << " instance(s) of class " << getLeakedObjectClassName());
84
92 jassertfalse;
93 }
94 }
95
96 Atomic<int> numObjects;
97 };
98
99 static const char* getLeakedObjectClassName()
100 {
101 return OwnerClass::getLeakedObjectClassName();
102 }
103
104 static LeakCounter& getCounter() noexcept
105 {
106 static LeakCounter counter;
107 return counter;
108 }
109};
110
111//==============================================================================
112#if DOXYGEN || ! defined (JUCE_LEAK_DETECTOR)
113 #if (DOXYGEN || JUCE_CHECK_MEMORY_LEAKS)
133 #define JUCE_LEAK_DETECTOR(OwnerClass) \
134 friend class juce::LeakedObjectDetector<OwnerClass>; \
135 static const char* getLeakedObjectClassName() noexcept { return #OwnerClass; } \
136 juce::LeakedObjectDetector<OwnerClass> JUCE_JOIN_MACRO (leakDetector, __LINE__);
137 #else
138 #define JUCE_LEAK_DETECTOR(OwnerClass)
139 #endif
140#endif
141
142} // namespace juce
juce::LeakedObjectDetector
Definition juce_LeakedObjectDetector.h:43
juce::Atomic
Definition juce_Atomic.h:42
juce::Atomic::value
std::atomic< Type > value
Definition juce_Atomic.h:135