Lock a range of process address space in physical memory
#include <sys/mman.h> int mlock(const void * addr, size_t len);
Use the -l c option to qcc to link against this library. This library is usually included automatically.
The mlock() function locks a range of process address space starting at address addr and continuing for length len. The addr must be a multiple of PAGESIZE, which depends on the target platform.
|The full POSIX implementation for this function was added in the QNX Neutrino Core OS 6.3.2.
The calling process needs superuser capabilities to call mlock().
The successful call to mlock() function ensures that the pages are memory-resident (i.e. the addresses always reside in physical memory). For more information, see “Locking memory” in the Process Manager chapter of the System Architecture guide.
POSIX 1003.1 MLR
mlockall(), mmap(), munlock(), munlockall()
“Locking memory” in the Process Manager chapter of the System Architecture guide