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)