Windows编程基础 第十五章 线程局部存储 线程同步 原子锁 临界区 事件 互斥量 信号量 可等候定时器

//TLS线程局部存储的函数实现//#include "stdafx.h"#include "windows.h"#include "tchar.h"#include "locale.h"TCHAR * g_pszText=NULL;DWORD g_nTlsIndex=0;VOID  Print(){//_tprintf(TEXT("g_pszText:%s\n"),g_pszText);//从指定的TLS索引中获取值TCHAR * pszText=(TCHAR *)TlsGetValue(g_nTlsIndex);_tprintf(TEXT("TLS:%s\n"),pszText);}DWORD WINAPI  PrintProc(LPVOID lpParameter){TCHAR * pszText=(TCHAR *)lpParameter;g_pszText=(TCHAR *)malloc(100);_tcscpy(g_pszText,pszText);TlsSetValue(g_nTlsIndex,g_pszText);while(1){Print();Sleep(1000);}return 0;}VOID Create(){HANDLE  hTread=NULL;DWORD nThreadId=0;TCHAR  szText1[]=TEXT("线程1-------------");hTread=CreateThread(NULL,0,PrintProc,szText1,0,&nThreadId);TCHAR  szText2[]=TEXT("-------------线程2");hTread=CreateThread(NULL,0,PrintProc,szText2,0,&nThreadId);WaitForSingleObject(hTread,INFINITE);}int _tmain(int argc, _TCHAR* argv[]){setlocale(LC_ALL,"zhi");//创建TLS索引号g_nTlsIndex=TlsAlloc();Create();//释放TSL索引号TlsFree(g_nTlsIndex);return 0;}

// 本程序演示原子锁的使用方式//#include "stdafx.h"#include "windows.h"#include "tchar.h"#include "locale.h"LONG g_lValue1=0;LONG g_lValue2=0;DWORD WINAPI  InterProc1(LPVOID lpParameter){for (int nIndex=0;nIndex<10000000;nIndex++){g_lValue1++;}return 0;}DWORD WINAPI  InterProc2(LPVOID lpParameter){for (int nIndex=0;nIndex<10000000;nIndex++){InterlockedIncrement(&g_lValue2);}return 0;}VOID Create(){DWORD wThreadId=0;HANDLE hTread[4]={NULL};hTread[0]=CreateThread(NULL,0,InterProc1,NULL,0,&wThreadId);hTread[1]=CreateThread(NULL,0,InterProc1,NULL,0,&wThreadId);hTread[2]=CreateThread(NULL,0,InterProc2,NULL,0,&wThreadId);hTread[3]=CreateThread(NULL,0,InterProc2,NULL,0,&wThreadId);WaitForMultipleObjects(4,hTread,TRUE,INFINITE);//线程1和线程2都执行完毕之后，打印出数值，然后退出_tprintf(TEXT("Value1=%d,Value2=%d\n"),g_lValue1,g_lValue2);}int _tmain(int argc, _TCHAR* argv[]){Create();return 0;}

//本程序演示临界区的使用方式//#include "stdafx.h"#include "windows.h"#include "tchar.h"#include "locale.h"CRITICAL_SECTION  cs={0};LONG lValue=0;VOID Print(){//进入临界区,临界区中可以有多条语句，会作为一个整体执行EnterCriticalSection(&cs);_tprintf(TEXT("LONG long  long .........\n"));lValue++;//这个语句的意思就是说明临界区可以实现原子锁的功能LeaveCriticalSection(&cs);}DWORD WINAPI PrintProc( LPVOID lpParameter ){while(1){Print();Sleep(1);}return 0;}VOID Create(){DWORD nThreadID=0;HANDLE hThread[2]={0};hThread[0]=CreateThread(NULL,0,PrintProc,NULL,0,&nThreadID);hThread[1]=CreateThread(NULL,0,PrintProc,NULL,0,&nThreadID);getchar();}int _tmain(int argc, _TCHAR* argv[]){InitializeCriticalSection(&cs);Create();DeleteCriticalSection(&cs);return 0;}

//本程序演示事件的使用方式#include "stdafx.h"#include "windows.h"#include "tchar.h"#include "locale.h"HANDLE g_hEvent1=NULL;HANDLE g_hEvent2=NULL;DWORD WINAPI ThreadSend( LPVOID lpParameter){while(1){SetEvent(g_hEvent1);//触发事件1Sleep(500);SetEvent(g_hEvent2);//触发事件2Sleep(500);}return 0;}DWORD WINAPI ThreadRecv1( LPVOID lpParameter){while(1){WaitForSingleObject(g_hEvent1,INFINITE);_tprintf(TEXT("Hello Event :%p\n"),g_hEvent1);}return 0;}DWORD WINAPI ThreadRecv2( LPVOID lpParameter){while(1){WaitForSingleObject(g_hEvent2,INFINITE);_tprintf(TEXT("Hello Event :%p\n"),g_hEvent2);ResetEvent(g_hEvent2);//因为是手动重置事件，所以要手动的把事件设置成为无信号状态}return 0;}VOID Create(){DWORD wThreadID=0;HANDLE  hTread[3]={NULL};hTread[0]=CreateThread(NULL,0,ThreadSend,NULL,0,&wThreadID);hTread[1]=CreateThread(NULL,0,ThreadRecv1,NULL,0,&wThreadID);hTread[2]=CreateThread(NULL,0,ThreadRecv2,NULL,0,&wThreadID);}int _tmain(int argc, _TCHAR* argv[]){//创建自动重置事件g_hEvent1=CreateEvent(NULL,FALSE,FALSE,NULL);//创建一个自动重置事件，初始信号没有，匿名事件//创建一个手动事件g_hEvent2=CreateEvent(NULL,TRUE,FALSE,NULL);//创建一个手动重置事件，初始信号没有，匿名事件Create();getchar();CloseHandle(g_hEvent1);CloseHandle(g_hEvent2);return 0;}

<pre name="code" class="cpp">//本程序演示互斥量的使用方式#include "stdafx.h"#include "windows.h"#include "tchar.h"#include "locale.h"HANDLE g_Mutex=NULL;DWORD WINAPI ThreadProc1( LPVOID lpParameter){while(1){WaitForSingleObject(g_Mutex,INFINITE);_tprintf(TEXT("线程1-------------------------\n"));Sleep(500);ReleaseMutex(g_Mutex);}return 0;}DWORD WINAPI ThreadProc2( LPVOID lpParameter){while(1){WaitForSingleObject(g_Mutex,INFINITE);_tprintf(TEXT("-------------线程2------------\n"));Sleep(500);ReleaseMutex(g_Mutex);}return 0;}DWORD WINAPI ThreadProc3( LPVOID lpParameter){while(1){WaitForSingleObject(g_Mutex,INFINITE);_tprintf(TEXT("-------------------------线程3\n"));Sleep(500);ReleaseMutex(g_Mutex);}return 0;}VOID Create(){DWORD wThreadID=0;HANDLE  hTread[3]={NULL};hTread[0]=CreateThread(NULL,0,ThreadProc1,NULL,0,&wThreadID);hTread[1]=CreateThread(NULL,0,ThreadProc2,NULL,0,&wThreadID);hTread[2]=CreateThread(NULL,0,ThreadProc3,NULL,0,&wThreadID);}int _tmain(int argc, _TCHAR* argv[]){setlocale(LC_ALL,"zhi");//创建互斥量g_Mutex=CreateMutex(NULL,FALSE,NULL);Create();getchar();CloseHandle(g_Mutex);return 0;}

//本程序演示信号量的使用方式#include "stdafx.h"#include "windows.h"#include "tchar.h"#include "locale.h"#include "stdio.h"#include "conio.h"HANDLE g_hSemphore=NULL;DWORD WINAPI ThreadSend( LPVOID lpParameter){while(1){TCHAR ch=_getch();switch(ch){case  '1':_tprintf(TEXT("将会打印出一个语句！\n"));ReleaseSemaphore(g_hSemphore,1,NULL);break;case  '5':ReleaseSemaphore(g_hSemphore,5,NULL);_tprintf(TEXT("将会打印出五个语句！\n"));break;}}return 0;}DWORD WINAPI ThreadRecv( LPVOID lpParameter){while(1){WaitForSingleObject(g_hSemphore,INFINITE);_tprintf(TEXT("Hello Semaphore!\n"));Sleep(1000);}return 0;}VOID Create(){DWORD wThreadID=0;HANDLE  hTread[2]={NULL};hTread[0]=CreateThread(NULL,0,ThreadSend,NULL,0,&wThreadID);hTread[1]=CreateThread(NULL,0,ThreadRecv,NULL,0,&wThreadID);WaitForMultipleObjects(2,hTread,TRUE,INFINITE);}int _tmain(int argc, _TCHAR* argv[]){setlocale(LC_ALL,"zhi");//创建互斥量g_hSemphore=CreateSemaphore(NULL,5,10,NULL);// 初始的时候5个信号量，也就是信号量创建出来的时候就会立刻发出5个信号。Create();getchar();CloseHandle(g_hSemphore);return 0;}

//本程序演示可等候定时器的使用方式#include "stdafx.h"#include "windows.h"#include "tchar.h"#include "locale.h"#include "stdio.h"#include "conio.h"HANDLE g_hTimer=NULL;VOID CALLBACK TimerAPCProc(LPVOID lpArgToCompletionRoutine,DWORD dwTimerLowValue,DWORD dwTimerHighValue){_tprintf(TEXT("----------------APC  TIMER  PROC----------\n"));}DWORD WINAPI TimerThread( LPVOID lpParameter){while(1){WaitForSingleObject(g_hTimer,INFINITE);_tprintf(TEXT("Hello Timer!\n"));}return 0;}VOID Create(){//创建一个定时器g_hTimer=CreateWaitableTimer(NULL,FALSE,NULL);LARGE_INTEGER  DueTime={0};DueTime.QuadPart=-100000000;//设置定时器SetWaitableTimer(g_hTimer,&DueTime,1000,NULL,NULL,FALSE);//创建等候线程DWORD wThreadID=0;HANDLE  hTread=NULL;hTread=CreateThread(NULL,0,TimerThread,NULL,0,&wThreadID);WaitForSingleObject(hTread,INFINITE);CloseHandle(hTread);}VOID APCTimer(){HANDLE hTimer=CreateWaitableTimer(NULL,FALSE,NULL);LARGE_INTEGER  DueTime={0};DueTime.QuadPart=-10000;SetWaitableTimer(hTimer,&DueTime,1000,TimerAPCProc,NULL,FALSE);while (1){SleepEx(-1,TRUE);}CloseHandle(hTimer);}int _tmain(int argc, _TCHAR* argv[]){setlocale(LC_ALL,"zhi");//Create();APCTimer();return 0;}