Win32进程间通信之共享内存

内容导读

互联网集市收集整理的这篇技术教程文章主要介绍了Win32进程间通信之共享内存，小编现在分享给大家，供广大互联网技能从业者学习和参考。文章包含2100字，纯文字阅读大概需要4分钟。

内容图文

写进程

/*写进程*/
#include <stdio.h>
#include <Windows.h>

void main()
{
	HANDLE hFileMap = CreateFileMappingA(INVALID_HANDLE_VALUE,NULL,PAGE_READWRITE,0,1024,"ShareMemTest");
	if (hFileMap == NULL)
	{
		printf("CreateFileMapping failed.\n");
		getchar();
		return;
	}
	char* pBuf = (char*)MapViewOfFile(hFileMap, FILE_MAP_ALL_ACCESS, 0, 0, 1024);

	if (pBuf == NULL)
	{
		printf("MapViewOfFile failed.\n");
		CloseHandle(hFileMap);
		getchar();
		return;
	}

	HANDLE hSemEmpty = CreateSemaphoreA(NULL, 1, 1, "EmptySem");
	if (hSemEmpty == NULL)
	{
		printf("Create EmptySem failed.\n");
		UnmapViewOfFile(pBuf);
		CloseHandle(hFileMap);
		getchar();
		return;
	}

	HANDLE hSemFull = CreateSemaphoreA(NULL, 0, 1, "FullSem");
	if (hSemFull == NULL)
	{
		printf("Create FullSem failed.\n");
		UnmapViewOfFile(pBuf);
		CloseHandle(hFileMap);
		CloseHandle(hSemEmpty);
		getchar();
		return;
	}

	char strMsgBuf[256] = {0};
	while (TRUE)
	{
		WaitForSingleObject(hSemEmpty, INFINITE);
		scanf("%s",strMsgBuf);
		memcpy(pBuf, strMsgBuf, strlen(strMsgBuf) + 1);
		ReleaseSemaphore(hSemFull, 1, NULL);
	}

	UnmapViewOfFile(pBuf);
	CloseHandle(hFileMap);
	CloseHandle(hSemEmpty);
	CloseHandle(hSemFull);
	getchar();
}

读进程

/*读进程*/
#include <stdio.h>
#include <Windows.h>

void main()
{
	HANDLE hFileMap = OpenFileMappingA(PAGE_READONLY, FALSE, "ShareMemTest");
	if (hFileMap==NULL)
	{
		printf("OpenFileMapping failed.\n");
		getchar();
		return;
	}
	char* pBuf = (char*)MapViewOfFile(hFileMap, FILE_MAP_ALL_ACCESS, 0, 0, 1024);

	if (pBuf == NULL)
	{
		printf("MapViewOfFile failed.\n");
		CloseHandle(hFileMap);
		getchar();
		return;
	}

	HANDLE hSemEmpty = OpenSemaphoreA(SEMAPHORE_ALL_ACCESS, FALSE, "EmptySem");
	if (hSemEmpty == NULL)
	{
		printf("Open EmptySem failed.\n");
		UnmapViewOfFile(pBuf);
		CloseHandle(hFileMap);
		getchar();
		return;
	}

	HANDLE hSemFull = OpenSemaphoreA(SEMAPHORE_ALL_ACCESS, FALSE, "FullSem");
	if (hSemFull == NULL)
	{
		printf("Open FullSem failed.\n");
		UnmapViewOfFile(pBuf);
		CloseHandle(hFileMap);
		CloseHandle(hSemEmpty);
		getchar();
		return;
	}

	while (TRUE)
	{
		WaitForSingleObject(hSemFull, INFINITE);//请求读
		printf("%s\n",pBuf);
		ReleaseSemaphore(hSemEmpty, 1, NULL);
	}

	UnmapViewOfFile(pBuf);
	CloseHandle(hFileMap);
	CloseHandle(hSemEmpty);
	CloseHandle(hSemFull);
	getchar();
}

内容总结

以上是互联网集市为您收集整理的Win32进程间通信之共享内存全部内容，希望文章能够帮你解决Win32进程间通信之共享内存所遇到的程序开发问题。 如果觉得互联网集市技术教程内容还不错，欢迎将互联网集市网站推荐给程序员好友。

内容备注

版权声明：本文内容由互联网用户自发贡献，该文观点与技术仅代表作者本人。本站仅提供信息存储空间服务，不拥有所有权，不承担相关法律责任。如发现本站有涉嫌侵权/违法违规的内容， 请发送邮件至 gblab@vip.qq.com 举报，一经查实，本站将立刻删除。

内容手机端

---