d8fe325dc0
Hold counters internally instead of exposing (and duplicating) counting code in other compile units Remove deleteFunc list. This should be handled by another mechanism. CDRMonitor is debugging code. Use internal singly linked list to avoid special handling of LinkedList.
95 lines
2.4 KiB
C++
95 lines
2.4 KiB
C++
/* showConstructDestruct.h */
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/**
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* Copyright - See the COPYRIGHT that is included with this distribution.
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* EPICS pvDataCPP is distributed subject to a Software License Agreement found
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* in file LICENSE that is included with this distribution.
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*/
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#ifndef SHOWCONSTRUCTDESTRUCT_H
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#define SHOWCONSTRUCTDESTRUCT_H
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#include <stddef.h>
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#include <stdlib.h>
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#include <stddef.h>
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#include <string.h>
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#include <stdio.h>
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#include "noDefaultMethods.h"
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#include "lock.h"
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#include "pvType.h"
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namespace epics { namespace pvData {
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//! Used to pass around snapshots
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struct CDRCount { // default copy and assignment are ok
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size_t cons, dtys;
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long refs;
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CDRCount():cons(0),dtys(0),refs(0){}
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CDRCount& operator+=(const CDRCount& o)
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{cons+=o.cons; dtys+=o.dtys; refs+=o.refs; return *this;}
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CDRCount& operator=(size_t count) // reset counters
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{cons=count; dtys=count; refs=count; return *this;}
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};
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class CDRNode;
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//! @brief Global registrar for CDRNodes
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class CDRMonitor : private NoDefaultMethods {
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public:
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static CDRMonitor& get();
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CDRNode* addNode(CDRNode& next)
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{
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CDRNode *ret=firstNode;
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firstNode=&next;
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return ret;
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}
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CDRCount current(); //!< current global count
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CDRNode* first(){return firstNode;}
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void show(FILE*);
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private:
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// Private ctor for singleton
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CDRMonitor();
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CDRNode *firstNode;
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static CDRMonitor *theone;
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static void init(void*);
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};
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//! Counters for Construction, Destruction, and References of one class
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class CDRNode : private NoDefaultMethods {
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public:
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CDRNode(const String& name)
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:nodeName(name)
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,current()
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,guard()
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,nextNode(CDRMonitor::get().addNode(*this))
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{}
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void construct(){Lock x(&guard); current.cons++;}
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void destruct(){Lock x(&guard); current.dtys++;}
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void incRef(){Lock x(&guard); current.refs++;}
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void decRef(){Lock x(&guard); current.refs--;}
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CDRNode* next() const{return nextNode;}
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CDRCount get() const{Lock x(&guard); return current;}
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void show(FILE*);
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private:
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const String nodeName;
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CDRCount current;
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mutable Mutex guard;
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CDRNode * const nextNode;
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};
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#define PVDATA_REFCOUNT_MONITOR_DEFINE(NAME) static CDRNode NAME ## _node(#NAME)
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#define PVDATA_REFCOUNT_MONITOR_DESTRUCT(NAME) NAME ## _node.destruct()
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#define PVDATA_REFCOUNT_MONITOR_CONSTRUCT(NAME) NAME ## _node.construct()
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}}
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#endif /* SHOWCONSTRUCTDESTRUCT_H */
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