mmap

mmap

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• 网络内存映射；映射操作；共享内存

例句

Since it operates on the system break (a global variable), it cannot coexist with any other allocator or with mmap.

由于它对系统中断点（一个全局变量）进行操作，所以它不能与其他分配程序或者mmap一起使用。

However, as with mmap, the call itself can be expensive, so is only attempted if trailing unused memory exceeds a tunable threshold.

尽管如此，对于mmap来说，调用本身可能十分昂贵，所以在末尾的未使用内存超过一个可调整的阀值时才被尝试使用。

A related problem is caused by applications that try to load code at an absolute address by calling mmap with the flag MAP_FIXED.

应用程序试图通过调用带有MAP_FIXED标志的mmap从绝对地址加载代码时会产生一个相关问题。

Below is the Win32 sample code, and the equivalent of the Linux mmap implementation, to create a shared memory resource.

下面是创建共享内存资源的Win32示例代码，以及相对应的Linuxnmap实现。

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。

However, this improvement doesn't come without a price; there are hidden pitfalls when using the mmap+write method.

然而，性能的改进需要付出代价的；是用mmap与write这种组合方法，存在着一些隐藏的陷阱。

By using mmap instead of read, we've cut in half the amount of data the kernel has to copy.

通过调用mmap而不是read，我们已经将内核需要执行的复制操作减半。

Segment 3 is for memory for mapped files, mmap'd memory.

段3预留给内存映射文件，即mmap。

Here, however, we are only concerned with mmap's ability to add mapped RAM to our process.

不过，在这里，我们只关心mmap向进程添加被映射的内存的能力。

One way to eliminate a copy is to skip calling read and instead call mmap. For example

消除复制的一种方法是将read系统调用，改为mmap系统调用，例如