PR_FUTEX_HASH_GET_SLOTS(2const)                PR_FUTEX_HASH_GET_SLOTS(2const)

NAME
       PR_FUTEX_HASH_GET_SLOTS - return the size of the private hash

LIBRARY
       Standard C library (libc, -lc)

SYNOPSIS
       #include <linux/prctl.h>  /* Definition of PR_* constants */
       #include <sys/prctl.h>

       int prctl(PR_FUTEX_HASH, PR_FUTEX_HASH_GET_SLOTS);

DESCRIPTION
       Return the current size of the private hash.

RETURN VALUE
       A value of 0 means that a private hash has not been allocated and the
       global hash is in use.

       A value >0 specifies the size of the private hash.

       On error, -1 is returned, and errno is set to indicate the error.

STANDARDS
       Linux.

HISTORY
       Linux 6.17.

SEE ALSO
       prctl(2), PR_FUTEX_HASH(2const)

Linux man-pages 6.16              2025-08-19   PR_FUTEX_HASH_GET_SLOTS(2const)