'\" t

.\" Copyright (c) 2012 by Michael Kerrisk <mtk.manpages@gmail.com>

.\"

.\" %%%LICENSE_START(VERBATIM)

.\" Permission is granted to make and distribute verbatim copies of this

.\" manual provided the copyright notice and this permission notice are

.\" preserved on all copies.

.\"

.\" Permission is granted to copy and distribute modified versions of this

.\" manual under the conditions for verbatim copying, provided that the

.\" entire resulting derived work is distributed under the terms of a

.\" permission notice identical to this one.

.\"

.\" Since the Linux kernel and libraries are constantly changing, this

.\" manual page may be incorrect or out-of-date.  The author(s) assume no

.\" responsibility for errors or omissions, or for damages resulting from

.\" the use of the information contained herein.  The author(s) may not

.\" have taken the same level of care in the production of this manual,

.\" which is licensed free of charge, as they might when working

.\" professionally.

.\"

.\" Formatted or processed versions of this manual, if unaccompanied by

.\" the source, must acknowledge the copyright and authors of this work.

.\" %%%LICENSE_END

.\"

.TH MALLOC_STATS 3  2017-09-15 "Linux" "Linux Programmer's Manual"

.SH NAME

malloc_stats \- print memory allocation statistics

.SH SYNOPSIS

.B #include <malloc.h>

.PP

.B void malloc_stats(void);

.SH DESCRIPTION

The

.BR malloc_stats ()

function prints (on standard error) statistics about memory allocated by

.BR malloc (3)

and related functions.

For each arena (allocation area), this function prints

the total amount of memory allocated

and the total number of bytes consumed by in-use allocations.

(These two values correspond to the

.I arena

and

.I uordblks

fields retrieved by

.BR mallinfo (3).)

In addition,

the function prints the sum of these two statistics for all arenas,

and the maximum number of blocks and bytes that were ever simultaneously

allocated using

.BR mmap (2).

.\" .SH VERSIONS

.\" Available already in glibc 2.0, possibly earlier

.SH ATTRIBUTES

For an explanation of the terms used in this section, see

.BR attributes (7).

.TS

allbox;

lb lb lb

l l l.

Interface	Attribute	Value

T{

.BR malloc_stats ()

T}	Thread safety	MT-Safe

.TE

.sp 1

.SH CONFORMING TO

This function is a GNU extension.

.SH NOTES

More detailed information about memory allocations in the main arena

can be obtained using

.BR mallinfo (3).

.SH SEE ALSO

.BR mmap (2),

.BR mallinfo (3),

.BR malloc (3),

.BR malloc_info (3),

.BR mallopt (3)

.SH COLOPHON

This page is part of release 4.15 of the Linux

.I man-pages

project.

A description of the project,

information about reporting bugs,

and the latest version of this page,

can be found at

\%https://www.kernel.org/doc/man\-pages/.