PR_FUTEX_HASH_GET_SLOTS - return the size of the private hash

NAME  LIBRARY  SYNOPSIS  DESCRIPTION  RETURN VALUE  STANDARDS  HISTORY  SEE ALSO 

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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)

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