Windows核心编程之用户模式下的线程同步读写锁和条件变量

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于 2013-08-15 17:29:14 发布 · 2.3k 阅读

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CC 4.0 BY-SA版权

文章标签：

#windows 核心编程 #读写锁 #条件变量

本文深入探讨Windows核心编程中的用户模式线程同步，重点讲解了读写锁和条件变量的使用。通过示例代码展示了如何正确利用SleepConditionVariableSRW进行递归调用，并强调了在完成操作后释放锁的重要性。

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读写锁

#include <Windows.h>
#include <tchar.h>
#include <stdio.h>
#include <process.h>
#include <winbase.h>

// 读写锁
SRWLOCK srwLock;

unsigned WINAPI ReadThread1(LPVOID)
{
	while(1)
	{
		AcquireSRWLockShared(&srwLock);
		printf("read 1111\n");
		ReleaseSRWLockShared(&srwLock);
		Sleep(500);
	}


	return 0;
}

unsigned WINAPI ReadThread2(LPVOID)
{

	while(1)
	{
		AcquireSRWLockShared(&srwLock);
		printf("read 2222222222\n");
		ReleaseSRWLockShared(&srwLock);
		Sleep(500);
	}

	return 0;
}

unsigned WINAPI WriteThread(LPVOID)
{
	while(1)
	{
		AcquireSRWLockExclusive(&srwLock);
		printf("write\n");
		ReleaseSRWLockExclusive(&srwLock);

		Sleep(1000);

	}

	return 0;
}
int main()
{
	InitializeSRWLock(&srwLock);

	CloseHandle(
		(HANDLE)_beginthreadex(NULL, 0, ReadThread1, NULL, 0, NULL) );

	CloseHandle(
		(HANDLE)_beginthreadex(NULL, 0, ReadThread2, NULL, 0, NULL) );
	CloseHandle(