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//
// libavg - Media Playback Engine.
// Copyright (C) 2003-2014 Ulrich von Zadow
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2 of the License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
//
// Current versions can be found at www.libavg.de
//
#include "ObjectCounter.h"
#include "Exception.h"
#include "Logger.h"
#include <boost/thread/mutex.hpp>
#include <iostream>
#include <sstream>
#include <vector>
#include <algorithm>
#ifdef WIN32
#include <windows.h>
#include <Dbghelp.h>
#else
#include <cxxabi.h>
#endif
#define DEBUG_ALLOC 1
namespace avg {
using namespace std;
ObjectCounter* ObjectCounter::s_pObjectCounter = 0;
bool ObjectCounter::s_bDeleted = false;
boost::mutex * pCounterMutex;
void deleteObjectCounter()
{
delete ObjectCounter::s_pObjectCounter;
delete pCounterMutex;
ObjectCounter::s_pObjectCounter = 0;
}
ObjectCounter::ObjectCounter()
{
}
ObjectCounter::~ObjectCounter()
{
s_bDeleted = true;
}
ObjectCounter * ObjectCounter::get()
{
if (!s_pObjectCounter) {
if (s_bDeleted) {
// This is _after_ the deleteObjectCounter has been called.
return 0;
} else {
s_pObjectCounter = new ObjectCounter;
pCounterMutex = new boost::mutex;
atexit(deleteObjectCounter);
}
}
return s_pObjectCounter;
}
void ObjectCounter::incRef(const std::type_info* pType)
{
#ifdef DEBUG_ALLOC
lock_guard Lock(*pCounterMutex);
TypeMap::iterator MapEntry = m_TypeMap.find(pType);
if (MapEntry == m_TypeMap.end()) {
m_TypeMap[pType] = 1;
} else {
(MapEntry->second)++;
}
// cerr << "incRef " << demangle(pType->name()) << ":" << m_TypeMap[pType] << endl;
#endif
}
void ObjectCounter::decRef(const std::type_info* pType)
{
#ifdef DEBUG_ALLOC
if (!this) {
// This happens if there are counted static objects that are deleted after
// s_pObjectCounter has been deleted.
return;
}
lock_guard Lock(*pCounterMutex);
TypeMap::iterator MapEntry = m_TypeMap.find(pType);
if (MapEntry == m_TypeMap.end()) {
cerr << "ObjectCounter for " << demangle(pType->name())
<< " does not exist." << endl;
// Can't decref a type that hasn't been incref'd.
AVG_ASSERT(false);
} else {
(MapEntry->second)--;
if (MapEntry->second < 0) {
cerr << "ObjectCounter: refcount for " <<
demangle(MapEntry->first->name()) <<
" < 0" << endl;
AVG_ASSERT(false);
}
}
// cerr << "decRef " << demangle(pType->name()) << ":" << MapEntry->second << endl;
#endif
}
int ObjectCounter::getCount(const std::type_info* pType)
{
TypeMap::iterator MapEntry = m_TypeMap.find(pType);
if (MapEntry == m_TypeMap.end()) {
return 0;
} else {
return MapEntry->second;
}
}
std::string ObjectCounter::dump()
{
stringstream ss;
ss << "Object dump: " << endl;
TypeMap::iterator it;
vector<string> strings;
for (it = m_TypeMap.begin(); it != m_TypeMap.end(); ++it) {
stringstream tempStream;
if (it->second > 0) {
tempStream << " " << demangle(it->first->name()) << ": " << it->second;
strings.push_back(tempStream.str());
}
}
sort(strings.begin(), strings.end());
for (vector<string>::iterator it=strings.begin(); it != strings.end(); ++it) {
ss << *it << endl;
}
return ss.str();
}
string ObjectCounter::demangle(string s)
{
int rc;
string sResult;
#ifdef _WIN32
char szDemangledName[2048];
rc = int(UnDecorateSymbolName(s.c_str(), szDemangledName, sizeof(szDemangledName),
UNDNAME_COMPLETE));
if (rc) {
sResult = szDemangledName;
} else {
int error = GetLastError();
printf("UnDecorateSymbolName returned error %d\n", error);
sResult = s;
}
#else
char * pszDemangled = abi::__cxa_demangle(s.c_str(), 0, 0, &rc);
if (rc) {
sResult = s;
} else {
sResult = pszDemangled;
}
if (pszDemangled) {
free(pszDemangled);
}
#endif
return sResult;
}
TypeMap ObjectCounter::getObjectCount(){
return m_TypeMap;
}
}
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