mirror of https://github.com/mkerrisk/man-pages
79 lines
2.4 KiB
Groff
79 lines
2.4 KiB
Groff
.\" Copyright (c) 2012 by Michael Kerrisk <mtk.manpages@gmail.com>
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.\"
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.\" %%%LICENSE_START(VERBATIM)
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.\" Permission is granted to make and distribute verbatim copies of this
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.\" manual provided the copyright notice and this permission notice are
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.\" preserved on all copies.
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.\"
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.\" Permission is granted to copy and distribute modified versions of this
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.\" manual under the conditions for verbatim copying, provided that the
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.\" entire resulting derived work is distributed under the terms of a
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.\" permission notice identical to this one.
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.\"
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.\" Since the Linux kernel and libraries are constantly changing, this
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.\" manual page may be incorrect or out-of-date. The author(s) assume no
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.\" responsibility for errors or omissions, or for damages resulting from
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.\" the use of the information contained herein. The author(s) may not
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.\" have taken the same level of care in the production of this manual,
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.\" which is licensed free of charge, as they might when working
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.\" professionally.
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.\"
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.\" Formatted or processed versions of this manual, if unaccompanied by
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.\" the source, must acknowledge the copyright and authors of this work.
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.\" %%%LICENSE_END
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.\"
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.TH MALLOC_STATS 3 2020-08-13 "Linux" "Linux Programmer's Manual"
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.SH NAME
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malloc_stats \- print memory allocation statistics
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.SH SYNOPSIS
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.B #include <malloc.h>
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.PP
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.B void malloc_stats(void);
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.SH DESCRIPTION
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The
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.BR malloc_stats ()
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function prints (on standard error) statistics about memory allocated by
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.BR malloc (3)
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and related functions.
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For each arena (allocation area), this function prints
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the total amount of memory allocated
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and the total number of bytes consumed by in-use allocations.
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(These two values correspond to the
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.I arena
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and
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.I uordblks
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fields retrieved by
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.BR mallinfo (3).)
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In addition,
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the function prints the sum of these two statistics for all arenas,
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and the maximum number of blocks and bytes that were ever simultaneously
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allocated using
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.BR mmap (2).
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.\" .SH VERSIONS
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.\" Available already in glibc 2.0, possibly earlier
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.SH ATTRIBUTES
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For an explanation of the terms used in this section, see
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.BR attributes (7).
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.TS
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allbox;
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lb lb lb
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l l l.
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Interface Attribute Value
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T{
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.BR malloc_stats ()
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T} Thread safety MT-Safe
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.TE
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.sp 1
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.SH CONFORMING TO
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This function is a GNU extension.
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.SH NOTES
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More detailed information about memory allocations in the main arena
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can be obtained using
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.BR mallinfo (3).
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.SH SEE ALSO
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.BR mmap (2),
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.BR mallinfo (3),
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.BR malloc (3),
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.BR malloc_info (3),
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.BR mallopt (3)
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