bd56723bc0
class Foo
#ifdef TRACK_OBJECT_USAGE
: public InstanceCounter<Foo>
#endif
Then, use this macro somewhere in the class body:
SUPPORT_OBJECT_ANALYTICS(Foo)
Lastly, add whatever information you want to trace out to the function ObjectAnalytics::DumpStatistics().
Here's a sample of the output of what I've instrumented so far:
-----------------------------------------------------------
Object Usage Stats
CardPrimitive current count: 7899
CardPrimitive current byte usage: 2053740
CardPrimitive max count: 7908
CardPrimitive max byte usage: 2056080
MTGCard current count: 13973
MTGCard current byte usage: 670704
MTGCard max count: 13982
MTGCard max byte usage: 671136
MTGCardInstance current count: 180
MTGCardInstance current byte usage: 172080
MTGCardInstance max count: 189
MTGCardInstance max byte usage: 180684
-----------------------------------------------------------
88 lines
1.8 KiB
C++
88 lines
1.8 KiB
C++
#ifndef OBJECTANALYTICS_H
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#define OBJECTANALYTICS_H
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#ifdef DEBUG
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#define TRACK_OBJECT_USAGE
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#endif
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#ifdef TRACK_OBJECT_USAGE
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namespace ObjectAnalytics
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{
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/*
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** See ObjectAnalytics.cpp for how to add additional objects to this function's dump
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*/
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void DumpStatistics();
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}
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#define SUPPORT_OBJECT_ANALYTICS(classname) \
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template <> unsigned int InstanceCounter<classname>::sHighWaterMark = 0; \
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template <> unsigned int InstanceCounter<classname>::sInstanceCount = 0; \
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/**
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** Helper class for tracking object instances.
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** Usage:
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** class Foo
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** #ifdef TRACK_OBJECT_USAGE
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** : public InstanceCounter<Foo>
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** #endif
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**
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** Additionally, since the implementation uses static counters,
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** somewhere in your class body, you need to put in the following macro:
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** SUPPORT_OBJECT_ANALYTICS(Foo);
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*/
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template <typename T>
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class InstanceCounter
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{
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public:
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InstanceCounter()
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{
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if (sHighWaterMark < ++sInstanceCount)
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sHighWaterMark = sInstanceCount;
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}
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InstanceCounter(const InstanceCounter&)
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{
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if (sHighWaterMark < ++sInstanceCount)
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sHighWaterMark = sInstanceCount;
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}
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InstanceCounter& operator =(const InstanceCounter&)
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{
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}
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~InstanceCounter()
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{
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--sInstanceCount;
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}
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static unsigned int GetCurrentObjectCount()
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{
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return sInstanceCount;
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}
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static unsigned int GetMaximumObjectCount()
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{
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return sHighWaterMark;
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}
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static unsigned int GetCurrentByteCount()
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{
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return sizeof(T) * sInstanceCount;
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}
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static unsigned int GetMaximumByteCount()
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{
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return sizeof(T) * sHighWaterMark;
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}
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static unsigned int sInstanceCount;
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static unsigned int sHighWaterMark;
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};
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#else
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#define SUPPORT_OBJECT_ANALYTICS(classname)
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#endif //TRACK_OBJECT_USAGE
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#endif //OBJECTANALYTICS_H
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