c++ - CreateFileMapping/MapViewOfFile 返回的共享内存数组是否初始化为零？

Question

只是想知道我是否正在像这样在 Windows 平台上创建共享内存阵列:

HANDLE hFile = CreateFileMapping(INVALID_HANDLE_VALUE, NULL, PAGE_READWRITE | SEC_COMMIT, 0, 1024 * 4, _T("mySharedMemName"));
if(hFile)
{
    VOID* pData = MapViewOfFile(hFile, FILE_MAP_ALL_ACCESS, 0, 0, 1024 * 4);

    //Is 'pData' array initialized with zeros the first time the 'hFile' is used?
}

我第一次调用这段代码时，内存数组是否初始化为0？如果不是，如何使其初始化为零？

Answer 1

来自documentation :

The initial contents of the pages in a file mapping object backed by the operating system paging file are 0 (zero).