线程同步学习

利用事件来实现同步：

#include <iostream.h>
#include<windows.h>
int idx=0;
int tickets=100;
HANDLE g_hEvent;
DWORD WINAPI FunProc1(LPVOID lpParameter){
	while(TRUE){
		WaitForSingleObject(g_hEvent,INFINITE);
		if(tickets>0){
			Sleep(1);
			cout<<"thread1 sell ticket:"<<tickets--<<endl;
		}else{
			break;
		}
		SetEvent(g_hEvent);
	
	}
	return 0;
}
DWORD WINAPI FunProc2(LPVOID lpParameter){
	while(TRUE){
		WaitForSingleObject(g_hEvent,INFINITE);
		if(tickets>0){
			Sleep(1);
			cout<<"thread2 sell ticket:"<<tickets--<<endl;
		}else{
			break;
		}
	SetEvent(g_hEvent);

	}
	return 0;
}


void main(){
	HANDLE hThread1=CreateThread(NULL,0,FunProc1,NULL,0,NULL);
	HANDLE hThread2=CreateThread(NULL,0,FunProc2,NULL,0,NULL);
	
	CloseHandle(hThread1);
	CloseHandle(hThread2);
	g_hEvent=CreateEvent(NULL,FALSE,FALSE,NULL);
	SetEvent(g_hEvent);

	Sleep(4000);
}

 利用临界区来实现同步：

#include <iostream.h>
#include<windows.h>
int idx=0;
int tickets=100;

DWORD WINAPI FunProc1(LPVOID lpParameter);
DWORD WINAPI FunProc2(LPVOID lpParameter);

CRITICAL_SECTION g_cs;
void main(){
	HANDLE hThread1=CreateThread(NULL,0,FunProc1,NULL,0,NULL);
	HANDLE hThread2=CreateThread(NULL,0,FunProc2,NULL,0,NULL);
	
	CloseHandle(hThread1);
	CloseHandle(hThread2);
	InitializeCriticalSection(&g_cs);

	Sleep(4000);
	DeleteCriticalSection(&g_cs);
}

DWORD WINAPI FunProc1(LPVOID lpParameter){
	while(TRUE){
		EnterCriticalSection(&g_cs); 


		if(tickets>0){
			Sleep(1);
			cout<<"thread1 sell ticket:"<<tickets--<<endl;
		}else{
			break;
		}

		LeaveCriticalSection(&g_cs);

	}
	return 0;
}
DWORD WINAPI FunProc2(LPVOID lpParameter){
	while(TRUE){
		EnterCriticalSection(&g_cs); 
		if(tickets>0){
			Sleep(1);
			cout<<"thread2 sell ticket:"<<tickets--<<endl;
		}else{
			break;
		}
	LeaveCriticalSection(&g_cs);


	}
	return 0;
}