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custom new/delete for memoryHeap(Unresolved external error)

jason9559 (18)
I'm getting a weird error involving my memory initializer function that is in the namespace mem. The error is thus:


1>------ Build started: Project: EEngine - Editor, Configuration: Debug Win32 ------
1>Build started 2/3/2013 2:02:06 PM.
1>InitializeBuildStatus:
1> Touching "Debug\EEngine - Editor.unsuccessfulbuild".
1>ClCompile:
1> E_Memory.cpp
1>ResourceCompile:
1> All outputs are up-to-date.
1>Link:
1> Creating library C:\Games\!Echoes Team\EEngine - Editor\Debug\EEngine - Editor.lib and object C:\Games\!Echoes Team\EEngine - Editor\Debug\EEngine - Editor.exp
1>E_Engine.obj : error LNK2019: unresolved external symbol "void __cdecl mem::initializeMemory(void)" (?initializeMemory@mem@@YAXXZ) referenced in function "public: __thiscall EEngine::Engine::Engine(void)" (??0Engine@EEngine@@QAE@XZ)
1>C:\Games\!Echoes Team\EEngine - Editor\Debug\EEngine - Editor.exe : fatal error LNK1120: 1 unresolved externals
1>
1>Build FAILED.
1>
1>Time Elapsed 00:00:03.12
========== Build: 0 succeeded, 1 failed, 0 up-to-date, 0 skipped ==========

Any help would be greatly appreciated.


E_Memory.h 
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#ifndef _MEMORY_HEAP_
#define _MEMORY_HEAP_

#define _MEMORY_SIZE_ 100

using namespace std;

namespace mem
{
	void initializeMemory();
	void* operator new(size_t size);
	void operator delete(void* ptr);
}

class memoryManager
{
public:
	memoryManager();
	~memoryManager();
	void* retrieve(int size);
private:
	void* m_heap[_MEMORY_SIZE_];
};

#endif



E_Memory.cpp 
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#include "E_Memory.h"
#include <iostream>

using namespace mem;
using namespace std;

memoryManager* heap;

memoryManager::memoryManager()
{
	for(int i = 0; i < _MEMORY_SIZE_; i++)
	{
		m_heap[i] = malloc(sizeof(void*));
	}
}

void* memoryManager::retrieve(int size)
{
	void* ptr;
	ptr = malloc(size);
	return ptr;
}


void initializeMemory()
{
#ifndef _MEMORY_INITIALIZED_
#define _MEMORY_INITIALIZED_
	heap = new memoryManager;
#endif
}

void* operator new(size_t size)
{
	void* ptr;
	ptr = heap->retrieve(size);
	cout<<"testing";
	return(ptr);
}

void operator delete(void* ptr)
{

}



E_Engine.h 
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#ifndef _ENGINE_H_
#define _ENGINE_H_

#ifdef _RELEASE
#define WIN_32_LEAN_AND_MEAN
#endif

//#include "GameLayer.h"
#include "E_Core.h"
#include "common_header.h"
#include "E_Window.h"

using mem::initializeMemory;

namespace EEngine
{
class Engine
{
public:
	Engine();
	~Engine();

	Core* core; 
private:
	std::string logName;
};
}
#endif



E_Engine.cpp 
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#include "E_Engine.h"
using namespace EEngine;

Engine::Engine()
{
	initializeMemory();
	logName = "log.txt";
	LogMgr::createLog(logName);
	core = new Core();

}

Engine::~Engine()
{
	if(core) delete core;
}
Last edited on
ne555 (10692)
http://www.cplusplus.com/forum/general/89135/#msg478659


core = new Core(); ¿why dynamic allocation?
jason9559 (18)
That link tells me the problem...how do i fix it?

P.S. don't ask me why its dynamic allocation. I'm not the one that created the foundation of the engine.
nedo (83)
my guess is either you are missing an cpp or you haven't linked some library. Did this "engine" come with some librarys as well?
ne555 (10692)
> That link tells me the problem...how do i fix it?
great, ¿what was the problem? (it gives you 4 reasons)

`E_Memory.cpp' is not being linked now.
You need to put it in the project ¿what build tools are you using?
Last edited on
jason9559 (18)
This is a custom engine that me and two other people are making for a game, so no library's except for SFML for now. We are using visual studio for the development. I'm going to try and link E_Memory.cpp.
Last edited on
jason9559 (18)
Fixed it.
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