#include <windows.h>
#include <iostream.h>
//两个线程的声明
DWORD WINAPI Fun1Proc(LPVOID lpParameter);
DWORD WINAPI Fun2Proc(LPVOID lpParameter);

int tickets = 100;
CRITICAL_SECTION g_cs; //定义一个临界区

int main()
{
HANDLE hThread1;
HANDLE hThread2;
hThread1=CreateThread(NULL,0, Fun1Proc, NULL,0, NULL);
hThread2=CreateThread(NULL,0, Fun2Proc, NULL,0, NULL);
CloseHandle(hThread1);
CloseHandle(hThread2);

InitializeCriticalSection(&g_cs); //初始化临界区
Sleep(4000);

DeleteCriticalSection(&g_cs); //当临界区里没有资源时释放掉临界区（可以这样说吗）？？？

return 0;
}

DWORD WINAPI Fun1Proc(LPVOID lpParameter)
{

while (TRUE)
{
EnterCriticalSection(&g_cs); //该线程进入临界区
if (tickets > 0)
{
Sleep( 1);
cout<< "Thread1 sell tickets:"<< tickets-- << endl;
}
else
{
break;
}
LeaveCriticalSection(&g_cs); //退出临界区
}

return0;
}

DWORD WINAPI Fun2Proc(LPVOID lpParameter)
{

while(TRUE)
{
EnterCriticalSection(&g_cs); //该线程进入临界区
if(tickets > 0)
{
Sleep( 1);
cout<< "Thread2 sell tickets:"<< tickets-- << endl;
}
else
{
break;
}
LeaveCriticalSection(&g_cs); //退出临界区
}
return 0;

}

#include <windows.h>
#include <iostream.h>
//1、两个线程的声明
DWORD WINAPI Fun1Proc(LPVOID lpParameter);
DWORD WINAPI Fun2Proc(LPVOID lpParameter);

int tickets = 100;
CRITICAL_SECTION g_csA; //2、定义两个临界区
CRITICAL_SECTION g_csB;

int main()
{
HANDLE hThread1;
HANDLE hThread2;
hThread1=CreateThread(NULL,0, Fun1Proc, NULL,0, NULL);
hThread2=CreateThread(NULL,0, Fun2Proc, NULL,0, NULL);
CloseHandle(hThread1);
CloseHandle(hThread2);

InitializeCriticalSection(&g_csA); //3、初始化临界区
InitializeCriticalSection(&g_csB);
Sleep(4000);

DeleteCriticalSection(&g_csA); //4、当临界区里没有资源时释放掉临界区
DeleteCriticalSection(&g_csB);
return 0;
}

DWORD WINAPI Fun1Proc(LPVOID lpParameter)
{

// 11、两个临界区和两个线程会形成死机。线程在等待无法进入临界区g_csB。线程在等待无法进入临界区g_csA

while (TRUE)
{
EnterCriticalSection(&g_csA); //5、该线程进入临界区g_csA
Sleep(1); //6、线程进入睡眠状态 线程时间片断结束线程开始
EnterCriticalSection(&g_csB); //9、线程进入临界区g_csB，但是临界区g_csB已被线程占用故只能等待时间片断交给线程
if (tickets > 0)
{
Sleep( 1);
cout<< "Thread1 sell tickets:"<< tickets-- << endl;
}
else
{
break;
}
LeaveCriticalSection(&g_csB); //退出临界区
LeaveCriticalSection(&g_csA);
}

return 0;
}

DWORD WINAPI Fun2Proc(LPVOID lpParameter)
{

while(TRUE)
{
EnterCriticalSection(&g_csB); //7、线程进入临界区g_csB
Sleep(1); //8、线程进入睡眠状态线程时间片断结束线程开始
EnterCriticalSection(&g_csA); //10、线程进入临界区g_csA 但是临界区g_csA已被线程占用故只能等待时间片断交给线程

if(tickets > 0)
{
Sleep( 1);
cout<< "Thread2 sell tickets:"<< tickets-- << endl;
}
else
{
break;
}
LeaveCriticalSection(&g_csA);
LeaveCriticalSection(&g_csB); //退出临界区
}
return 0;
}