1.\" Copyright (c) 1980, 1991, 1993 2.\" The Regents of the University of California. All rights reserved. 3.\" 4.\" Redistribution and use in source and binary forms, with or without 5.\" modification, are permitted provided that the following conditions 6.\" are met: 7.\" 1. Redistributions of source code must retain the above copyright 8.\" notice, this list of conditions and the following disclaimer. 9.\" 2. Redistributions in binary form must reproduce the above copyright 10.\" notice, this list of conditions and the following disclaimer in the 11.\" documentation and/or other materials provided with the distribution. 12.\" 3. Neither the name of the University nor the names of its contributors 13.\" may be used to endorse or promote products derived from this software 14.\" without specific prior written permission. 15.\" 16.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 17.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 20.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26.\" SUCH DAMAGE. 27.\" 28.\" @(#)valloc.3 8.1 (Berkeley) 6/4/93 29.\" $FreeBSD: src/lib/libc/gen/valloc.3,v 1.4.2.4 2001/12/14 18:33:51 ru Exp $ 30.\" $DragonFly: src/lib/libc/gen/valloc.3,v 1.2 2003/06/17 04:26:42 dillon Exp $ 31.\" 32.Dd June 4, 1993 33.Dt VALLOC 3 34.Os 35.Sh NAME 36.Nm valloc 37.Nd aligned memory allocation function 38.Sh LIBRARY 39.Lb libc 40.Sh SYNOPSIS 41.In unistd.h 42.Ft void * 43.Fn valloc "size_t size" 44.Sh DESCRIPTION 45.Bf -symbolic 46The 47.Fn valloc 48function is obsoleted by the current version of 49.Xr malloc 3 , 50which aligns page-sized and larger allocations. 51.Ef 52.Pp 53The 54.Fn valloc 55function 56allocates 57.Fa size 58bytes aligned on a page boundary. 59It is implemented by calling 60.Xr malloc 3 61with a slightly larger request, saving the true beginning of the block 62allocated, and returning a properly aligned pointer. 63.Sh RETURN VALUES 64The 65.Fn valloc 66function returns 67a pointer to the allocated space if successful; otherwise 68a null pointer is returned 69.Sh HISTORY 70The 71.Fn valloc 72function appeared in 73.Bx 3.0 . 74.Sh BUGS 75A 76.Em vfree 77function 78has not been implemented. 79