diff options
| author | Otto Moerbeek <otto@cvs.openbsd.org> | 2008-11-20 09:05:16 +0000 |
|---|---|---|
| committer | Otto Moerbeek <otto@cvs.openbsd.org> | 2008-11-20 09:05:16 +0000 |
| commit | 525435551d990dca513d5d81e57065bf55bc5b58 (patch) | |
| tree | 9d422b029eb06cd7553a1b3895348f4c2d6a41eb /lib/libc | |
| parent | a2feefbf84ad3460491bd1dd3241731cf1f5e5b7 (diff) | |
move allocations between half a page and a page as close to the end of
the page as possible (i.e. make malloc option P a default).
ok art@ millert@ krw@
Diffstat (limited to 'lib/libc')
| -rw-r--r-- | lib/libc/stdlib/malloc.3 | 5 | ||||
| -rw-r--r-- | lib/libc/stdlib/malloc.c | 4 |
2 files changed, 5 insertions, 4 deletions
diff --git a/lib/libc/stdlib/malloc.3 b/lib/libc/stdlib/malloc.3 index a6a8014433b..79d36d61fdb 100644 --- a/lib/libc/stdlib/malloc.3 +++ b/lib/libc/stdlib/malloc.3 @@ -30,9 +30,9 @@ .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF .\" SUCH DAMAGE. .\" -.\" $OpenBSD: malloc.3,v 1.56 2008/11/02 14:42:01 otto Exp $ +.\" $OpenBSD: malloc.3,v 1.57 2008/11/20 09:05:15 otto Exp $ .\" -.Dd $Mdocdate: November 2 2008 $ +.Dd $Mdocdate: November 20 2008 $ .Dt MALLOC 3 .Os .Sh NAME @@ -254,6 +254,7 @@ Freed chunks are filled with 0xdf. Allocations larger than half a page but smaller that a page are aligned to the end of a page to catch buffer overruns in more cases. +This is the default. .It Cm R .Dq realloc . Always reallocate when diff --git a/lib/libc/stdlib/malloc.c b/lib/libc/stdlib/malloc.c index 4e33d33b1b7..0f1f088b442 100644 --- a/lib/libc/stdlib/malloc.c +++ b/lib/libc/stdlib/malloc.c @@ -1,4 +1,4 @@ -/* $OpenBSD: malloc.c,v 1.109 2008/11/20 09:01:24 otto Exp $ */ +/* $OpenBSD: malloc.c,v 1.110 2008/11/20 09:05:15 otto Exp $ */ /* * Copyright (c) 2008 Otto Moerbeek <otto@drijf.net> * @@ -154,7 +154,7 @@ static int malloc_active; /* status of malloc */ static int malloc_freeprot; /* mprotect free pages PROT_NONE? */ static int malloc_hint; /* call madvice on free pages? */ static int malloc_junk; /* junk fill? */ -static int malloc_move; /* move allocations to end of page? */ +static int malloc_move = 1; /* move allocations to end of page? */ static int malloc_realloc; /* always realloc? */ static int malloc_xmalloc; /* xmalloc behaviour? */ static int malloc_zero; /* zero fill? */ |