projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| 09c5700e KM |
1 | .\" Copyright (c) 1980 Regents of the University of California. |
| 2 | .\" All rights reserved. The Berkeley software License Agreement | |
| 3 | .\" specifies the terms and conditions for redistribution. | |
| 4 | .\" | |
| ba92586e | 5 | .\" @(#)valloc.3 6.2 (Berkeley) %G% |
| 09c5700e | 6 | .\" |
| ba92586e | 7 | .TH VALLOC 3C "" |
| 09c5700e KM |
8 | .UC 3 |
| 9 | .SH NAME | |
| 10 | valloc \- aligned memory allocator | |
| 11 | .SH SYNOPSIS | |
| 12 | .nf | |
| 13 | .B char *valloc(size) | |
| 14 | .B unsigned size; | |
| 15 | .fi | |
| 16 | .SH DESCRIPTION | |
| ba92586e MK |
17 | .ft B |
| 18 | Valloc is obsoleted by the current version of malloc, | |
| 19 | which aligns page-sized and larger allocations. | |
| 20 | .ft R | |
| 21 | .PP | |
| 09c5700e KM |
22 | .I Valloc |
| 23 | allocates | |
| 24 | .I size | |
| c17b03b3 | 25 | bytes aligned on a page boundary. |
| 09c5700e KM |
26 | It is implemented by calling |
| 27 | .IR malloc (3) | |
| 28 | with a slightly larger request, saving the true beginning of the block | |
| 29 | allocated, and returning a properly aligned pointer. | |
| 30 | .SH DIAGNOSTICS | |
| 31 | .I Valloc | |
| 32 | returns a null pointer (0) if there is no available memory | |
| 33 | or if the arena has been detectably corrupted by storing outside the bounds | |
| 34 | of a block. | |
| 35 | .SH BUGS | |
| 36 | .I Vfree | |
| 37 | isn't implemented. |