diff options
Diffstat (limited to 'lib/libc/gen/valloc.3')
-rw-r--r-- | lib/libc/gen/valloc.3 | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/lib/libc/gen/valloc.3 b/lib/libc/gen/valloc.3 new file mode 100644 index 0000000..c428552 --- /dev/null +++ b/lib/libc/gen/valloc.3 @@ -0,0 +1,75 @@ +.\" Copyright (c) 1980, 1991, 1993 +.\" The Regents of the University of California. All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" 3. All advertising materials mentioning features or use of this software +.\" must display the following acknowledgement: +.\" This product includes software developed by the University of +.\" California, Berkeley and its contributors. +.\" 4. Neither the name of the University nor the names of its contributors +.\" may be used to endorse or promote products derived from this software +.\" without specific prior written permission. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE +.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +.\" SUCH DAMAGE. +.\" +.\" @(#)valloc.3 8.1 (Berkeley) 6/4/93 +.\" +.Dd June 4, 1993 +.Dt VALLOC 3 +.Os BSD 3 +.Sh NAME +.Nm valloc +.Nd aligned memory allocation function +.Sh SYNOPSIS +.Fd #include <unistd.h> +.Ft char * +.Fn valloc "unsigned size" +.Sh DESCRIPTION +.Bf -symbolic +Valloc is obsoleted by the current version of malloc(3), +which aligns page-sized and larger allocations. +.Ef +.Pp +The +.Fn valloc +function +allocates +.Fa size +bytes aligned on a page boundary. +It is implemented by calling +.Xr malloc 3 +with a slightly larger request, saving the true beginning of the block +allocated, and returning a properly aligned pointer. +.Sh RETURN VALUES +The +.Fn valloc +function returns +a pointer to the allocated space if successful; otherwise +a null pointer is returned +.Sh HISTORY +The +.Fn valloc +function appeared in +.Bx 3.0 . +.Sh BUGS +A +.Em vfree +function +has not been implemented. |