unmapped

If you have unmapped users, one of the possible reasons could be that objects ( e-mail addresses, for example) used for the resource mapping may not have been populated in one of the applications.

如果您有未映射的用户，其中原因之一可能是资源映射使用的对象（比如，电子邮件地址）可能在其中的一个应用软件中并没有被填充。

Indirect function calls are made to the dlls as needed, and finally the handle to the shared objects is closed and the objects are unmapped from memory and made unavailable.

当需要时，也可对dll进行间接函数调用，最后，关闭到共享目标文件的句柄，并且从内存中取消该目标文件映射，使之不可用。

Release() is called when there are no more references to an open file& all file descriptors are closed and all memory mappings are unmapped.

release（）是在对一个打开文件没有其他引用时调用的&此时所有的文件描述符都会被关闭，所有的内存映射都会被取消。