/*
-----------------------------------------------------------------------------
This source file is part of OGRE
(Object-oriented Graphics Rendering Engine)
For the latest info, see http://www.ogre3d.org/

Copyright (c) 2000-2009 Torus Knot Software Ltd

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
-----------------------------------------------------------------------------
*/
#include "OgreStableHeaders.h"

#include "OgrePlatform.h"
#include "OgrePrerequisites.h"
#include "OgreMemoryTracker.h"
#include "OgreString.h"

#if OGRE_PLATFORM == OGRE_PLATFORM_WIN32
#   include <windows.h>
#	define Ogre_OutputCString(str) ::OutputDebugStringA(str)
#	define Ogre_OutputWString(str) ::OutputDebugStringW(str)
#else
#	define Ogre_OutputCString(str) std::cerr << str
#	define Ogre_OutputWString(str) std::cerr << str
#endif

namespace Ogre
{
	
#if OGRE_MEMORY_TRACKER
	//--------------------------------------------------------------------------
	MemoryTracker& MemoryTracker::get()
	{
		static MemoryTracker tracker;
		return tracker;
	}
	//--------------------------------------------------------------------------
	void MemoryTracker::_recordAlloc(void* ptr, size_t sz, unsigned int pool, 
					  const char* file, size_t ln, const char* func)
	{
		if (mRecordEnable)
		{
			OGRE_LOCK_AUTO_MUTEX

				assert(mAllocations.find(ptr) == mAllocations.end() && "Double allocation with same address - "
				"this probably means you have a mismatched allocation / deallocation style, "
				"check if you're are using OGRE_ALLOC_T / OGRE_FREE and OGRE_NEW_T / OGRE_DELETE_T consistently");

			mAllocations[ptr] = Alloc(sz, pool, file, ln, func);
			if(pool >= mAllocationsByPool.size())
				mAllocationsByPool.resize(pool+1, 0);
			mAllocationsByPool[pool] += sz;
			mTotalAllocations += sz;
		}
	
	}
	//--------------------------------------------------------------------------
	void MemoryTracker::_recordDealloc(void* ptr)
	{
		if (mRecordEnable)
		{
			// deal cleanly with null pointers
			if (!ptr)
				return;

			OGRE_LOCK_AUTO_MUTEX

			AllocationMap::iterator i = mAllocations.find(ptr);
			assert(i != mAllocations.end() && "Unable to locate allocation unit - "
				"this probably means you have a mismatched allocation / deallocation style, "
				"check if you're are using OGRE_ALLOC_T / OGRE_FREE and OGRE_NEW_T / OGRE_DELETE_T consistently");
			// update category stats
			mAllocationsByPool[i->second.pool] -= i->second.bytes;
			// global stats
			mTotalAllocations -= i->second.bytes;
			mAllocations.erase(i);
		}
	}	
	//--------------------------------------------------------------------------
	size_t MemoryTracker::getTotalMemoryAllocated() const
	{
		return mTotalAllocations;
	}
	//--------------------------------------------------------------------------
	size_t MemoryTracker::getMemoryAllocatedForPool(unsigned int pool) const
	{
		return mAllocationsByPool[pool];
	}
	//--------------------------------------------------------------------------
	void MemoryTracker::reportLeaks()
	{	
		if (mRecordEnable)
		{
			StringUtil::StrStreamType os;

			if (mAllocations.empty())
			{
				os << "Ogre Memory: No memory leaks" << std::endl;
			}
			else
			{			
				os << "Ogre Memory: Detected memory leaks !!! " << std::endl;
				os << "Ogre Memory: (" << mAllocations.size() << ") Allocation(s) with total " << mTotalAllocations << " bytes." << std::endl;
				os << "Ogre Memory: Dumping allocations -> " << std::endl;


				for (AllocationMap::const_iterator i = mAllocations.begin(); i != mAllocations.end(); ++i)
				{
					const Alloc& alloc = i->second;
					if (!alloc.filename.empty())				
						os << alloc.filename;
					else
						os << "(unknown source):";

					os << "(" << alloc.line << ") : {" << alloc.bytes << " bytes}" << " function: " << alloc.function << std::endl; 				

				}			
				os << std::endl;			
			}

			if (mDumpToStdOut)		
				std::cout << os.str();		

			std::cout << os.str();
			std::ofstream of;
			of.open(mLeakFileName.c_str());
			of << os.str();
			of.close();

			Ogre_OutputCString(os.str().c_str());
		}
	}
#endif // OGRE_DEBUG_MODE	
	
}