projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| ae59e04c CL |
1 | .\" Copyright (c) 1980, 1991 Regents of the University of California. |
| 2 | .\" All rights reserved. | |
| 09c5700e | 3 | .\" |
| ae59e04c | 4 | .\" %sccs.include.redist.man% |
| 09c5700e | 5 | .\" |
| ae59e04c CL |
6 | .\" @(#)valloc.3 6.3 (Berkeley) %G% |
| 7 | .\" | |
| 8 | .Dd | |
| 9 | .Dt VALLOC 3 | |
| 10 | .Os BSD 3 | |
| 11 | .Sh NAME | |
| 12 | .Nm valloc | |
| 13 | .Nd aligned memory allocation function | |
| 14 | .Sh SYNOPSIS | |
| 15 | .Fd #include <unistd.h> | |
| 16 | .Ft char * | |
| 17 | .Fn valloc "unsigned size" | |
| 18 | .Sh DESCRIPTION | |
| 19 | .Bf -symbolic | |
| 20 | Valloc is obsoleted by the current version of malloc(3), | |
| ba92586e | 21 | which aligns page-sized and larger allocations. |
| ae59e04c CL |
22 | .Ef |
| 23 | .Pp | |
| 24 | The | |
| 25 | .Fn valloc | |
| 26 | function | |
| 09c5700e | 27 | allocates |
| ae59e04c | 28 | .Fa size |
| c17b03b3 | 29 | bytes aligned on a page boundary. |
| 09c5700e | 30 | It is implemented by calling |
| ae59e04c | 31 | .Xr malloc 3 |
| 09c5700e KM |
32 | with a slightly larger request, saving the true beginning of the block |
| 33 | allocated, and returning a properly aligned pointer. | |
| ae59e04c CL |
34 | .Sh RETURN VALUES |
| 35 | The | |
| 36 | .Fn valloc | |
| 37 | function returns | |
| 38 | a pointer to the allocated space if successful; otherwise | |
| 39 | a null pointer is returned | |
| 40 | .Sh HISTORY | |
| 41 | The | |
| 42 | .Fn valloc | |
| 43 | function appeared in | |
| 44 | .Bx 3.0 . | |
| 45 | .Sh BUGS | |
| 46 | A | |
| 47 | .Em vfree | |
| 48 | function | |
| 49 | has not been implemented. |