VC中进程间共享内存实现
2013-08-26 13:52
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VC++6.0共享内存技术总结
程序1 -- 建立共享区,写数据:
Cpp代码
int main(int argc, char* argv[])
{
HANDLE lhShareMemory;
char* lpBuffer = NULL;
lhShareMemory = CreateFileMapping(HANDLE(0xFFFFFFFF), NULL, PAGE_READWRITE,
0, 10, "mySharedMemory");
if (NULL == lhShareMemory)
{
if (ERROR_ALREADY_EXISTS == GetLastError())
{
cout << "Already exists!";
}
else
{
cout << "Create Sheared Memory unsuccessfully!";
}
return 0;
}
lpBuffer = (char*)MapViewOfFile(lhShareMemory, FILE_MAP_WRITE, 0, 0, 10);
if (NULL == lpBuffer)
{
cout << "Get Share memory unsuccessfully!";
return 0;
}
strcpy(lpBuffer, "hello");
cout << "进程通信:采用共享内存" << endl;
cout << "写进程" << endl;
cout << "写入数据:"<< endl<<lpBuffer << endl;
Sleep(100000);
UnmapViewOfFile(lpBuffer);
return 0;
}
程序2 -- 使用共享区,读数据:
Cpp代码
int main(int argc, char* argv[])
{
HANDLE lhShareMemory;
char* lpcBuffer;
lhShareMemory = OpenFileMapping(FILE_MAP_READ, false, "mySharedMemory");
if (NULL == lhShareMemory)
{
cout << "Open share memory unsuccessfully!" << endl;
DWORD ldwError = GetLastError();
cout << ldwError;
return 0;
}
lpcBuffer = (char*)MapViewOfFile(lhShareMemory, FILE_MAP_READ, 0, 0, 100);
if (NULL == lpcBuffer)
{
cout << "Open share memory unsuccessfully!";
return 0;
}
cout << "进程通信:采用共享内存" << endl;
cout << "读进程" << endl;
cout << "读入数据:" << endl;
for (int i = 0; i < 100; ++i)
{
cout << *(lpcBuffer + i);
}
UnmapViewOfFile(lpcBuffer);
return 0;
<
9b5c
li style="padding-bottom:0px;border-right-width:0px;list-style-type:decimal;margin:0px 0px 0px 30px;padding-left:0px;padding-right:0px;border-top-width:0px;border-bottom-width:0px;border-left-width:0px;padding-top:0px;">
}
程序1 -- 建立共享区,写数据:
Cpp代码
int main(int argc, char* argv[])
{
HANDLE lhShareMemory;
char* lpBuffer = NULL;
lhShareMemory = CreateFileMapping(HANDLE(0xFFFFFFFF), NULL, PAGE_READWRITE,
0, 10, "mySharedMemory");
if (NULL == lhShareMemory)
{
if (ERROR_ALREADY_EXISTS == GetLastError())
{
cout << "Already exists!";
}
else
{
cout << "Create Sheared Memory unsuccessfully!";
}
return 0;
}
lpBuffer = (char*)MapViewOfFile(lhShareMemory, FILE_MAP_WRITE, 0, 0, 10);
if (NULL == lpBuffer)
{
cout << "Get Share memory unsuccessfully!";
return 0;
}
strcpy(lpBuffer, "hello");
cout << "进程通信:采用共享内存" << endl;
cout << "写进程" << endl;
cout << "写入数据:"<< endl<<lpBuffer << endl;
Sleep(100000);
UnmapViewOfFile(lpBuffer);
return 0;
}
程序2 -- 使用共享区,读数据:
Cpp代码
int main(int argc, char* argv[])
{
HANDLE lhShareMemory;
char* lpcBuffer;
lhShareMemory = OpenFileMapping(FILE_MAP_READ, false, "mySharedMemory");
if (NULL == lhShareMemory)
{
cout << "Open share memory unsuccessfully!" << endl;
DWORD ldwError = GetLastError();
cout << ldwError;
return 0;
}
lpcBuffer = (char*)MapViewOfFile(lhShareMemory, FILE_MAP_READ, 0, 0, 100);
if (NULL == lpcBuffer)
{
cout << "Open share memory unsuccessfully!";
return 0;
}
cout << "进程通信:采用共享内存" << endl;
cout << "读进程" << endl;
cout << "读入数据:" << endl;
for (int i = 0; i < 100; ++i)
{
cout << *(lpcBuffer + i);
}
UnmapViewOfFile(lpcBuffer);
return 0;
<
9b5c
li style="padding-bottom:0px;border-right-width:0px;list-style-type:decimal;margin:0px 0px 0px 30px;padding-left:0px;padding-right:0px;border-top-width:0px;border-bottom-width:0px;border-left-width:0px;padding-top:0px;">
}
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