posix_utils

A set of helpers for the POSIX module. Raw interfaces are in the other posix*.nim files.

Imports

posix

Types

Uname = object
  sysname*, nodename*, release*, version*, machine*: string

Source Edit

Procs

proc uname(): Uname {...}{.raises: [OSError], tags: [].}

Provides system information in a Uname struct with sysname, nodename, release, version and machine attributes.

Example:

echo uname().nodename, uname().release, uname().version
doAssert uname().sysname.len != 0

Source Edit

proc fsync(fd: int) {...}{.raises: [OSError], tags: [].}

synchronize a file's buffer cache to the storage device Source Edit

proc stat(path: string): Stat {...}{.raises: [OSError], tags: [].}

Returns file status in a Stat structure Source Edit

proc memoryLock(a1: pointer; a2: int) {...}{.raises: [OSError], tags: [].}

Locks pages starting from a1 for a1 bytes and prevent them from being swapped. Source Edit

proc memoryLockAll(flags: int) {...}{.raises: [OSError], tags: [].}

Locks all memory for the running process to prevent swapping.

example:

memoryLockAll(MCL_CURRENT or MCL_FUTURE)

Source Edit

proc memoryUnlock(a1: pointer; a2: int) {...}{.raises: [OSError], tags: [].}

Unlock pages starting from a1 for a1 bytes and allow them to be swapped. Source Edit

proc memoryUnlockAll() {...}{.raises: [OSError], tags: [].}

Unlocks all memory for the running process to allow swapping. Source Edit

proc sendSignal(pid: Pid; signal: int) {...}{.raises: [OSError], tags: [].}

Sends a signal to a running process by calling kill. Raise exception in case of failure e.g. process not running. Source Edit

proc mkstemp(prefix: string; suffix = ""): (string, File) {...}{.raises: [OSError],
    tags: [].}

Creates a unique temporary file from a prefix string. A six-character string will be added. If suffix is provided it will be added to the string The file is created with perms 0600. Returns the filename and a file opened in r/w mode. Source Edit

proc mkdtemp(prefix: string): string {...}{.raises: [OSError], tags: [].}

Creates a unique temporary directory from a prefix string. Adds a six chars suffix. The directory is created with permissions 0700. Returns the directory name. Source Edit