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.\"     @(#)valloc.3	8.1 (Berkeley) 6/4/93
.\" %FreeBSD: src/lib/libc/gen/valloc.3,v 1.4.2.4 2001/12/14 18:33:51 ru Exp %
.\" $FreeBSD$
.\"
.Dd June 4, 1993
.Dt VALLOC 3
.Os
.Sh 名称
.Nm valloc
.Nd 整列メモリ割り振り関数
.Sh ライブラリ
.Lb libc
.Sh 書式
.In unistd.h
.Ft void *
.Fn valloc "size_t size"
.Sh 解説
.Bf -symbolic
.Fn valloc
は、ページサイズのより大きな割り振りを整列する現在バージョンの
.Xr malloc 3
関数によって置き換えられています。
.Ef
.Pp
.Fn valloc
関数は、ページ境界に整列された
.Fa size
バイトを割り振ります。
この関数は、やや大きな要求事項とともに
.Xr malloc 3
関数を呼び出し、割り振られたブロックの真の始まりを保存し、
適切に整列されたポインタを返すことによって行われます。
.Sh 戻り値
.Fn valloc
関数は、成功した場合は割り振られた空間へのポインタを
返します。それ以外の場合は、null ポインタを返します。
.Sh 歴史
.Fn valloc
関数は、
.Bx 3.0
で登場しました。
.Pp
.Sh バグ
.Em vfree
関数は実装されていません。