windows 线程同步的4种方法

来源：互联网发布：java敲代码编辑：程序博客网时间：2024/06/05 09:46

1. 互斥信号量

   #include <windows.h>
#include <iostream>
using namespace std;

DWORD WINAPI Fun1Proc(LPVOID param);
DWORD WINAPI Fun2Proc(LPVOID param);

int time = 0;
HANDLE Mutex;

void main()
{
    HANDLE thread1,thread2;
    thread1 = CreateThread(NULL,0,Fun1Proc,NULL,0,NULL);
    thread2 = CreateThread(NULL,0,Fun2Proc,NULL,0,NULL);
    CloseHandle(thread1);
    CloseHandle(thread2);
    Mutex = CreateMutex(NULL,FALSE,NULL);
    cout << "运行主线程!" << endl;
    Sleep(4000);
}

DWORD WINAPI Fun1Proc(LPVOID param)
{
    while(1) {
        WaitForSingleObject(Mutex,INFINITE);
        if(time <= 20) {
            Sleep(1);
            cout << "线程1运行第" << time++ << "次" << endl;
        }
        else
            break;
        ReleaseMutex(Mutex);
    }
    return 0;
}

DWORD WINAPI Fun2Proc(LPVOID param)
{
    while(1) {
        WaitForSingleObject(Mutex,INFINITE);
        if(time <= 20) {
            Sleep(1);
            cout << "线程2运行第" << time++ << "次" << endl;
        }
        else
            break;
        ReleaseMutex(Mutex);
    }
    return 0;
}

2. 基于事件的同步方法

#include <windows.h>
#include <iostream>
using namespace std;

DWORD WINAPI Fun1Proc(LPVOID param);
DWORD WINAPI Fun2Proc(LPVOID Param);

int time;
HANDLE events;

void main()
{
    HANDLE thread1,thread2;
    thread1 = CreateThread(NULL,0,Fun1Proc,NULL,0,NULL);
    thread2 = CreateThread(NULL,0,Fun2Proc,NULL,0,NULL);
    CloseHandle(thread1);
    CloseHandle(thread2);
    events = CreateEvent(NULL,FALSE,FALSE,NULL);
    SetEvent(events);
    Sleep(4000);
    CloseHandle(events);
}
DWORD WINAPI Fun1Proc(LPVOID param)
{
    while(1) {
        WaitForSingleObject(events,INFINITE);
        if(time <= 20) {
            Sleep(1);
            cout << "线程1运行第" << time++ << "次" << endl;
        }
        else
            break;
        SetEvent(events);
    }
    return 0;
}

DWORD WINAPI Fun2Proc(LPVOID param)
{
    while(1) {
        WaitForSingleObject(events,INFINITE);
        if(time <= 20) {
            Sleep(1);
            cout << "线程2运行第" << time++ << "次" << endl;
        }
        else
            break;
        SetEvent(events);
    }
    return 0;
}

3.基于临界区的进程同步方法

#include <windows.h>
#include <iostream>
using namespace std;

DWORD WINAPI Fun1Proc(LPVOID param);
DWORD WINAPI Fun2Proc(LPVOID param);

int time = 0;
CRITICAL_SECTION critical;

void main()
{
    HANDLE thread1,thread2;
    thread1 = CreateThread(NULL,0,Fun1Proc,NULL,0,NULL);
    thread2 = CreateThread(NULL,0,Fun2Proc,NULL,0,NULL);
    CloseHandle(thread1);
    CloseHandle(thread2);

    InitializeCriticalSection(&critical);
    Sleep(4000);
    DeleteCriticalSection(&critical);
}

DWORD WINAPI Fun1Proc(LPVOID param)
{
    while(1)
     {
        EnterCriticalSection(&critical);
        if(time <= 20)
         {
            Sleep(1);
            cout << "子线程1第" << time ++ << "次"<< endl;
        }
        else
            break;
        LeaveCriticalSection(&critical);
    }
    return 0;
}

DWORD WINAPI Fun2Proc(LPVOID param)
{
    while(1)
     {
        EnterCriticalSection(&critical);
        if(time <= 20)
         {
            Sleep(1);
            cout << "子线程2第" << time ++ << "次" << endl;
        }
        else
            break;
        LeaveCriticalSection(&critical);
    }
    return 0;
}

4. 基于信号量的方法

#include <windows.h>
#include <iostream>
using namespace std;

DWORD WINAPI Fun1Proc(LPVOID param);
DWORD WINAPI Fun2Proc(LPVOID param);

int time = 0;
HANDLE sema;

void main()

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