[Midnightbsd-cvs] src [7403] trunk/lib/libc/stdlib: add aligned_alloc(3) to libc.
laffer1 at midnightbsd.org
laffer1 at midnightbsd.org
Wed Jan 6 14:36:31 EST 2016
Revision: 7403
http://svnweb.midnightbsd.org/src/?rev=7403
Author: laffer1
Date: 2016-01-06 14:35:31 -0500 (Wed, 06 Jan 2016)
Log Message:
-----------
add aligned_alloc(3) to libc.
Modified Paths:
--------------
trunk/lib/libc/stdlib/Makefile.inc
trunk/lib/libc/stdlib/Symbol.map
trunk/lib/libc/stdlib/malloc.c
Added Paths:
-----------
trunk/lib/libc/stdlib/aligned_alloc.3
Modified: trunk/lib/libc/stdlib/Makefile.inc
===================================================================
--- trunk/lib/libc/stdlib/Makefile.inc 2016-01-06 18:48:49 UTC (rev 7402)
+++ trunk/lib/libc/stdlib/Makefile.inc 2016-01-06 19:35:31 UTC (rev 7403)
@@ -18,7 +18,7 @@
# machine-dependent stdlib sources
.sinclude "${.CURDIR}/${LIBC_ARCH}/stdlib/Makefile.inc"
-MAN+= a64l.3 abort.3 abs.3 alloca.3 atexit.3 atof.3 atoi.3 atol.3 \
+MAN+= a64l.3 abort.3 abs.3 aligned_alloc.3 alloca.3 atexit.3 atof.3 atoi.3 atol.3 \
at_quick_exit.3 bsearch.3 \
div.3 exit.3 getenv.3 getopt.3 getopt_long.3 getsubopt.3 \
hcreate.3 imaxabs.3 imaxdiv.3 insque.3 labs.3 ldiv.3 llabs.3 lldiv.3 \
@@ -29,6 +29,7 @@
tsearch.3
MLINKS+=a64l.3 l64a.3 a64l.3 l64a_r.3
+MLINKS+=aligned_alloc.3 posix_memalign.3
MLINKS+=atol.3 atoll.3
MLINKS+=exit.3 _Exit.3
MLINKS+=getenv.3 putenv.3 getenv.3 setenv.3 getenv.3 unsetenv.3
Modified: trunk/lib/libc/stdlib/Symbol.map
===================================================================
--- trunk/lib/libc/stdlib/Symbol.map 2016-01-06 18:48:49 UTC (rev 7402)
+++ trunk/lib/libc/stdlib/Symbol.map 2016-01-06 19:35:31 UTC (rev 7403)
@@ -93,6 +93,7 @@
};
FBSD_1.3 {
+ aligned_alloc;
atof_l;
atoi_l;
atol_l;
Added: trunk/lib/libc/stdlib/aligned_alloc.3
===================================================================
--- trunk/lib/libc/stdlib/aligned_alloc.3 (rev 0)
+++ trunk/lib/libc/stdlib/aligned_alloc.3 2016-01-06 19:35:31 UTC (rev 7403)
@@ -0,0 +1,126 @@
+.\" Copyright (C) 2006 Jason Evans <jasone at FreeBSD.org>.
+.\" 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(s), this list of conditions and the following disclaimer as
+.\" the first lines of this file unmodified other than the possible
+.\" addition of one or more copyright notices.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\" notice(s), this list of conditions and the following disclaimer in
+.\" the documentation and/or other materials provided with the
+.\" distribution.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER(S) ``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 COPYRIGHT HOLDER(S) 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.
+.\"
+.\" $FreeBSD: release/9.2.0/lib/libc/stdlib/aligned_alloc.3 243405 2012-11-22 15:19:53Z ed $
+.\"
+.Dd January 7, 2011
+.Dt ALIGNED_ALLOC 3
+.Os
+.Sh NAME
+.Nm aligned_alloc ,
+.Nm posix_memalign
+.Nd aligned memory allocation
+.Sh LIBRARY
+.Lb libc
+.Sh SYNOPSIS
+.In stdlib.h
+.Ft void *
+.Fn aligned_alloc "size_t alignment" "size_t size"
+.Ft int
+.Fn posix_memalign "void **ptr" "size_t alignment" "size_t size"
+.Sh DESCRIPTION
+The
+.Fn aligned_alloc
+and
+.Fn posix_memalign
+functions allocate
+.Fa size
+bytes of memory such that the allocation's base address is an even multiple of
+.Fa alignment .
+The
+.Fn aligned_alloc
+function returns the allocation, while the
+.Fn posix_memalign
+function stores the allocation in the value pointed to by
+.Fa ptr .
+.Pp
+The requested
+.Fa alignment
+must be a power of 2 at least as large as
+.Fn sizeof "void *" .
+.Pp
+Memory that is allocated via
+.Fn aligned_alloc
+and
+.Fn posix_memalign
+can be used as an argument in subsequent calls to
+.Xr realloc 3 ,
+.Xr reallocf 3 ,
+and
+.Xr free 3 .
+.Sh RETURN VALUES
+The
+.Fn aligned_alloc
+function returns a pointer to the allocation if successful; otherwise a
+NULL pointer is returned and
+.Va errno
+is set to an error value.
+.Pp
+The
+.Fn posix_memalign
+function returns the value 0 if successful; otherwise it returns an error value.
+.Sh ERRORS
+The
+.Fn aligned_alloc
+and
+.Fn posix_memalign
+functions will fail if:
+.Bl -tag -width Er
+.It Bq Er EINVAL
+The
+.Fa alignment
+parameter is not a power of 2 at least as large as
+.Fn sizeof "void *" .
+.It Bq Er ENOMEM
+Memory allocation error.
+.El
+.Sh SEE ALSO
+.Xr free 3 ,
+.Xr malloc 3 ,
+.Xr realloc 3 ,
+.Xr reallocf 3 ,
+.Xr valloc 3
+.Sh STANDARDS
+The
+.Fn aligned_alloc
+function conforms to
+.St -isoC-2011 .
+.Pp
+The
+.Fn posix_memalign
+function conforms to
+.St -p1003.1-2001 .
+.Sh HISTORY
+The
+.Fn posix_memalign
+function first appeared in
+.Fx 7.0 .
+.Pp
+The
+.Fn aligned_alloc
+function first appeared in
+.Fx 10.0 .
Property changes on: trunk/lib/libc/stdlib/aligned_alloc.3
___________________________________________________________________
Added: svn:eol-style
## -0,0 +1 ##
+native
\ No newline at end of property
Added: svn:keywords
## -0,0 +1 ##
+MidnightBSD=%H
\ No newline at end of property
Added: svn:mime-type
## -0,0 +1 ##
+text/plain
\ No newline at end of property
Modified: trunk/lib/libc/stdlib/malloc.c
===================================================================
--- trunk/lib/libc/stdlib/malloc.c 2016-01-06 18:48:49 UTC (rev 7402)
+++ trunk/lib/libc/stdlib/malloc.c 2016-01-06 19:35:31 UTC (rev 7403)
@@ -123,7 +123,9 @@
* defaults the A and J runtime options to off. These settings are appropriate
* for production systems.
*/
+#ifndef MALLOC_PRODUCTION
#define MALLOC_PRODUCTION
+#endif
#ifndef MALLOC_PRODUCTION
/*
@@ -158,7 +160,8 @@
#define MALLOC_DSS
#include <sys/cdefs.h>
-__FBSDID("$FreeBSD$");
+__MBSDID("$MidnightBSD$");
+/* $FreeBSD: release/9.2.0/lib/libc/stdlib/malloc.c 252699 2013-07-04 14:26:42Z des $ */
#include "libc_private.h"
#ifdef MALLOC_DEBUG
@@ -6046,6 +6049,20 @@
}
void *
+aligned_alloc(size_t alignment, size_t size)
+{
+ void *memptr;
+ int ret;
+
+ ret = posix_memalign(&memptr, alignment, size);
+ if (ret != 0) {
+ errno = ret;
+ return (NULL);
+ }
+ return (memptr);
+}
+
+void *
calloc(size_t num, size_t size)
{
void *ret;
More information about the Midnightbsd-cvs
mailing list