0x1 项目介绍

字母区写上一段字母 大小在50个以内， 可以自己定义，缓冲区每次只能有一个字母， 4个编辑框可以分别吃字母，最后4个吃货的所有字母加起来等于输入的字母和

0x2 难点

多种线程控制的结合使用， 缓冲区的控制， 吃货区的控制

0x3 项目展示

0x4 项目代码

// 20180102_01.cpp : Defines the entry point for the application.

//



#include "stdafx.h"

#include "resource.h"

#include <stdio.h>



HANDLE hMainThread;



HWND hEditBuffer1;

HWND hEditBuffer2;

HWND hEditResource;



HWND hEditEatA;

HWND hEditEatB;

HWND hEditEatC;

HWND hEditEatD;



TCHAR ResString[50]={0};

int ResLength=0;



HANDLE hResEvent_Buffer;

HANDLE hResEvent_Eat;

CRITICAL_SECTION cs_res;

CRITICAL_SECTION cs_buffer;



int GetResChar=0;

int GetBufferChar=0;



int nBufferIndex = -1;





DWORD WINAPI EatThread(

						  LPVOID lpParameter   // thread data

)

{

	TCHAR BufferStr[50]={0};

	TCHAR EatStr[50]={0};

	HWND hEditEat[4] = {hEditEatA,hEditEatB,hEditEatC,hEditEatD};

	int nIndex = (int)lpParameter;



	while(GetBufferChar<=ResLength)

	{

		//EnterCriticalSection(&cs_buffer);

		WaitForSingleObject(hResEvent_Eat,INFINITE);

		EnterCriticalSection(&cs_buffer);

		//拿到字符串

		if(nBufferIndex==0)

		{

			//从buffer1中拿

			memset(BufferStr,0,50);

			memset(EatStr,0,50);



			GetWindowText(hEditBuffer1,BufferStr,50);

			

			if(strlen(BufferStr)==0)

			{

				LeaveCriticalSection(&cs_buffer);

				SetEvent(hResEvent_Buffer);

				continue;

			}



			GetWindowText(hEditEat[nIndex],EatStr,50);



			int nEatLength = strlen(EatStr);

			EatStr[nEatLength] = BufferStr[0];

			//设置编辑框

			SetWindowText(hEditEat[nIndex],EatStr);

			SetWindowText(hEditBuffer1,"");



		}else

		{

			//从buffer2中拿

			memset(BufferStr,0,50);

			memset(EatStr,0,50);

			

			GetWindowText(hEditBuffer2,BufferStr,50);

			

			if(strlen(BufferStr)==0)

			{

				LeaveCriticalSection(&cs_buffer);

				SetEvent(hResEvent_Buffer);

				continue;

			}

			

			GetWindowText(hEditEat[nIndex],EatStr,50);

			

			int nEatLength = strlen(EatStr);

			EatStr[nEatLength] = BufferStr[0];

			//设置编辑框

			SetWindowText(hEditEat[nIndex],EatStr);

			SetWindowText(hEditBuffer2,"");

		}

		GetBufferChar++;

		LeaveCriticalSection(&cs_buffer);

		SetEvent(hResEvent_Buffer);

		//LeaveCriticalSection(&cs_buffer);

	}

	return 0;

}







DWORD WINAPI BufferThread(

							LPVOID lpParameter   // thread data

)

{

	TCHAR BufferStr[50]={0};

	HWND hEditBuffer[2] = {hEditBuffer1,hEditBuffer2};

	int nIndex = (int)lpParameter;

	



	while(GetResChar<=ResLength)

	{

		WaitForSingleObject(hResEvent_Buffer,INFINITE);

		EnterCriticalSection(&cs_res);

		

		if(nIndex==0)

		{

			nBufferIndex=0;

		}else{

			nBufferIndex=1;

		}



		memset(BufferStr,0,50);

		GetWindowText(hEditBuffer[nIndex],BufferStr,50);

		

		//如果=1，不要继续拿了

		if(strlen(BufferStr) == 1)

		{

			LeaveCriticalSection(&cs_res);

			SetEvent(hResEvent_Eat);

			continue;

		}





		if(GetResChar==0)

		{

			//sprintf(BufferStr,"%c",ResString[GetResChar]);

			BufferStr[0] = ResString[GetResChar]; 

			SetWindowText(hEditBuffer[nIndex],BufferStr);

			GetResChar++;

			LeaveCriticalSection(&cs_res);

			SetEvent(hResEvent_Eat);

			continue;

		}

		int nLength = strlen(BufferStr);

		BufferStr[nLength] = ResString[GetResChar];

		SetWindowText(hEditBuffer[nIndex],BufferStr);

		GetResChar++;

		



		Sleep(500);

		LeaveCriticalSection(&cs_res);

		SetEvent(hResEvent_Eat);

	}

	return 0;

}









DWORD WINAPI MainThreadProc(

						LPVOID lpParameter   // thread data

)

{

	//分别进入两个缓冲区

	memset(ResString,0,50);

	GetWindowText(hEditResource,ResString,50);

	//sprintf(MyBuffer,"%c",strBuffer[1]);

	//MessageBox(NULL,MyBuffer,0,0);



	//字符串长度

	while(ResString[ResLength]!='\0')

	{

		ResLength++;

	}

	//实际长度 ResLength+1



	HANDLE hBufferThread[2];

	hBufferThread[0] = CreateThread(NULL,0,BufferThread,(void*)0,0,NULL);

	hBufferThread[1] = CreateThread(NULL,0,BufferThread,(void*)1,0,NULL);



	HANDLE hEatThread[4];

	hEatThread[0] = CreateThread(NULL,0,EatThread,(void*)0,0,NULL);

	hEatThread[1] = CreateThread(NULL,0,EatThread,(void*)1,0,NULL);

	hEatThread[2] = CreateThread(NULL,0,EatThread,(void*)2,0,NULL);

	hEatThread[3] = CreateThread(NULL,0,EatThread,(void*)3,0,NULL);



	hResEvent_Buffer = CreateEvent(NULL,FALSE,TRUE,NULL);

	hResEvent_Eat = CreateEvent(NULL,FALSE,FALSE,NULL);



	WaitForMultipleObjects(2,hBufferThread,TRUE,INFINITE);

	WaitForMultipleObjects(4,hEatThread,TRUE,INFINITE);	



	CloseHandle(hBufferThread[0]);

	CloseHandle(hBufferThread[1]);

	CloseHandle(hEatThread[0]);

	CloseHandle(hEatThread[1]);

	CloseHandle(hEatThread[2]);

	CloseHandle(hEatThread[3]);

	

	//关闭事件

	CloseHandle(hResEvent_Buffer);

	CloseHandle(hResEvent_Eat);



	return 0;

}





BOOL CALLBACK MainDialogProc(

							HWND hwndDlg,  // handle to dialog box

							UINT uMsg,     // message

							WPARAM wParam, // first message parameter

							LPARAM lParam  // second message parameter

)

{

	switch(uMsg)

	{

	case WM_INITDIALOG:

		{

			InitializeCriticalSection(&cs_res);

			InitializeCriticalSection(&cs_buffer);



			hEditResource = GetDlgItem(hwndDlg,IDC_EDIT_RESOURCE);

			hEditEatA = GetDlgItem(hwndDlg,IDC_EDIT_EATA);

			hEditEatB = GetDlgItem(hwndDlg,IDC_EDIT_EATB);

			hEditEatC = GetDlgItem(hwndDlg,IDC_EDIT_EATC);

			hEditEatD = GetDlgItem(hwndDlg,IDC_EDIT_EATD);



			hEditBuffer1 = GetDlgItem(hwndDlg,IDC_EDIT_BUFFER1);

			//SetWindowText(hEditBuffer1,"0");

			hEditBuffer2 = GetDlgItem(hwndDlg,IDC_EDIT_BUFFER2);

			//SetWindowText(hEditBuffer2,"0");



			SetWindowText(hEditResource,"0");



			break;

		}

	case WM_CLOSE:

		{

			DeleteCriticalSection(&cs_res);

			DeleteCriticalSection(&cs_buffer);

			EndDialog(hwndDlg,0);

			break;

		}

	case WM_COMMAND:

		{

			switch(LOWORD(wParam))

			{

			case IDC_BUTTON_BEGIN:

				{

					//MessageBox(0,0,0,0);

					//开启主线程

					hMainThread = CreateThread(NULL,0,MainThreadProc,NULL,0,NULL);

					break;

				}

			}

		}

	}

	return FALSE;

}





int APIENTRY WinMain(HINSTANCE hInstance,

                     HINSTANCE hPrevInstance,

                     LPSTR     lpCmdLine,

                     int       nCmdShow)

{

 	// TODO: Place code here.

	

	DialogBox(hInstance,MAKEINTRESOURCE(IDD_DIALOG_MAIN),NULL,MainDialogProc);



	return 0;

}

0x5 总结

写完这个小项目， 自己的印象里面的概念其实还是挺晕乎的， 在写代码控制的时候， 也是不断的尝试， 不断的对线程的条件进行限制。。

最后感觉写挺烂的， 参考下吧

进程就是4GB， 线程就是EIP， 多线程速度快， 不过还是单线程好控制！！