A set of helpers for the POSIX module. Raw interfaces are in the other posix*.nim files.
Procs
proc memoryLock(a1: pointer; a2: int) {....raises: [OSError], tags: [], forbids: [].}
- Locks pages starting from a1 for a1 bytes and prevent them from being swapped. Source Edit
proc memoryLockAll(flags: int) {....raises: [OSError], tags: [], forbids: [].}
-
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: [], forbids: [].}
- Unlock pages starting from a1 for a1 bytes and allow them to be swapped. Source Edit
proc memoryUnlockAll() {....raises: [OSError], tags: [], forbids: [].}
- Unlocks all memory for the running process to allow swapping. Source Edit
proc mkstemp(prefix: string; suffix = ""): (string, File) {....raises: [OSError], tags: [], forbids: [].}
- 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 osReleaseFile(): Config {....raises: [IOError, OSError, Exception, ValueError, KeyError], tags: [ReadDirEffect, WriteIOEffect, ReadIOEffect, RootEffect], forbids: [].}
-
Gets system identification from os-release file and returns it as a parsecfg.Config. You also need to import the parsecfg module to gain access to this object. The os-release file is an official Freedesktop.org open standard. Available in Linux and BSD distributions, except Android and Android-based Linux. os-release file is not available on Windows and OS X by design.
Example:
import std/parsecfg when defined(linux): let data = osReleaseFile() echo "OS name: ", data.getSectionValue("", "NAME") ## the data is up to each distro.
Source Edit proc sendSignal(pid: Pid; signal: int) {....raises: [OSError], tags: [], forbids: [].}
- Sends a signal to a running process by calling kill. Raise exception in case of failure e.g. process not running. Source Edit