Memory Locking

Add functions for locking the process memory into RAM. More...

Files
file	memLock.c
	Locking process memory into RAM.

Functions
epicsShareFunc void	mcoreMLock (void)
	iocShell: Lock all process virtual memory into RAM.
epicsShareFunc void	mcoreMUnlock (void)
	iocShell: Unlock process virtual memory from RAM.

Detailed Description

Add functions for locking the process memory into RAM.

Adds functions that allow locking and unlocking the process virtual memory into RAM to make sure no page faults occur, which would introduce unpredictable interruptions and latency.

See man page for mlockall(2) for more details on memory locking.

Linux Security

To allow locking all its memory, under modern Linux systems the process must have a memlock entry in the pam limits module configuration.

See the limits.conf(5) man page for details.

Function Documentation

epicsShareFunc void mcoreMLock

(

void

)

iocShell: Lock all process virtual memory into RAM.

IOC Shell

mcoreMLock

Definition at line 34 of file memLock.c.

epicsShareFunc void mcoreMUnlock

(

void

)

iocShell: Unlock process virtual memory from RAM.

IOC Shell

mcoreMUnlock

Definition at line 40 of file memLock.c.