.\" the source, must acknowledge the copyright and authors of this work.
.\" %%%LICENSE_END
.\"
-.TH MALLOC_USABLE_SIZE 3 2012-03-29 "GNU" "Linux Programmer's Manual"
+.TH MALLOC_USABLE_SIZE 3 2014-06-13 "GNU" "Linux Programmer's Manual"
.SH NAME
malloc_usable_size \- obtain size of block of memory allocated from heap
.SH SYNOPSIS
If
.I ptr
is NULL, 0 is returned.
+.SH ATTRIBUTES
+.SS Multithreading (see pthreads(7))
+The
+.BR malloc_usable_size ()
+function is thread-safe.
.SH CONFORMING TO
This function is a GNU extension.
.SH NOTES
The main use of this function is for debugging and introspection.
.SH SEE ALSO
.BR malloc (3)
+.SH COLOPHON
+This page is part of release 3.79 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
+\%http://www.kernel.org/doc/man\-pages/.