mmap

NOTE: Shmat and mmap are used in Lotus Domino to get Shared memory.

注：shmat和mmap在Lotus Domino中用于获得共享内存。

The munmap subroutine only unmaps regions created from calls to the mmap subroutine.

munmap 子例程只是取消 对 mmap 子例程的调用而创建的区域的映射。

Also, invoking mmap and mfree is much slower than carving out an existing chunk of memory.

还有，调用mmap和mfree比雕刻出一个已存在的内存块慢许多。

The parameters passed to mmap() must not conflict with the access requested during open().

传递给 mmap() 的参数必须不能与 open() 时请求的访问相冲突。

Linux uses the shmget/mmap function to access files by directly incorporating file data into memory.

Linux 使用 shmget/mmap 函数通过直接将文件数据 合并入内存来访问文件。