TLC线程本地存储

// Win原理第七天.cpp : 定义控制台应用程序的入口点。
//

#include "stdafx.h"
#include "windows.h"
_declspec (thread) int  a = 200;
_declspec (thread) int b = 300;
void Fun()
{
    printf("%d", a);  //在不同的线程内，线程局部存储的全局变量在每一个线程内都有一份，
                              //故而它仅仅是和线程相关的，在不同的线程内打印的数字不一样。
}
DWORD  WINAPI ThreadProc(LPVOID  pParam)
{
    a = 500;
    b = 600;
    Fun();
    return 0;
}
DWORD  WINAPI  ThreadProc2(LPVOID  pParam)
{
    a = 700;
    b = 600;
    Fun();
    return 0;
}

void NTAPI t_TlsCallBack_A(PVOID DllHandle, DWORD Reason, PVOID Red)
{
    if (Reason == DLL_PROCESS_ATTACH)   //可以做反调试的检测
    {
        printf("Hello15pb1
");
    }

}

void NTAPI t_TlsCallBack_B(PVOID DllHandle, DWORD Reason, PVOID Red)
{
    if (Reason == DLL_PROCESS_ATTACH)   //可以做反调试的检测
        printf("HelloWorld2
");
}

#pragma data_seg(".CRT$XLB")
PIMAGE_TLS_CALLBACK p_thread_callback[] = {
    t_TlsCallBack_A,
    t_TlsCallBack_B,

    NULL };
#pragma data_seg()




int _tmain(int argc, _TCHAR* argv[])
{
    //printf("线程局部存储的变量改变之前：%d，非线程局部存储的变量改变之前%d
",a,b);
    //HANDLE hThread = CreateThread(NULL, NULL, ThreadProc, NULL, NULL, NULL);
    //HANDLE hThread2 = CreateThread(NULL, NULL, ThreadProc2, NULL, NULL, NULL);
    //WaitForSingleObject(hThread, -1);
    //printf("线程局部存储的变量改变之后：%d，非线程局部存储的变量改变之后%d
", a, b);

    return 0;
}