msync: Synchronize Memory With Physical Storage

In mmap: Map Pages of Memory

Description

msync calls the underlying system call of the same name. This writes modified whole pages back to the filesystem and updates the file modification time.

Usage

msync(x, flags=mmapFlags("MS_ASYNC"))

Arguments

x	An mmap object.
flags	One of the following flags: ‘MS_ASYNC’: return immediately (default). ‘MS_SYNC’: perform synchronous writes. ‘MS_INVALIDATE’: invalidate all cached data. Per the man page, ‘MS_ASYNC’ is not permitted to be combined with the other flags.

Details

See the appropriate OS man page.

Value

0 on success, otherwise -1.

Author(s)

Jeffrey A. Ryan

mmap documentation built on May 2, 2019, 4:45 p.m.