diff options
Diffstat (limited to 'lib/libc/stdlib/malloc.3')
| -rw-r--r-- | lib/libc/stdlib/malloc.3 | 20 |
1 files changed, 15 insertions, 5 deletions
diff --git a/lib/libc/stdlib/malloc.3 b/lib/libc/stdlib/malloc.3 index a0262c1..ef77e80 100644 --- a/lib/libc/stdlib/malloc.3 +++ b/lib/libc/stdlib/malloc.3 @@ -34,7 +34,7 @@ .\" SUCH DAMAGE. .\" .\" @(#)malloc.3 8.1 (Berkeley) 6/4/93 -.\" $Id: malloc.3,v 1.11 1997/06/12 12:45:45 phk Exp $ +.\" $Id: malloc.3,v 1.12 1997/06/22 17:54:27 phk Exp $ .\" .Dd August 27, 1996 .Dt MALLOC 3 @@ -119,7 +119,7 @@ is NULL, no action occurs. .Sh TUNING Once, when the first call is made to one of these memory allocation routines, various flags will be set or reset, which affect the -workings of this alloction implementation. +workings of this allocation implementation. .Pp The ``name'' of the file referenced by the symbolic link named .Pa /etc/malloc.conf , @@ -142,9 +142,16 @@ in these cases. .It J Each byte of new memory allocated by .Fn malloc -and +or +.Fn realloc +as well as all memory returned by +.Fn free +or .Fn realloc will be initialized to 0xd0. +This options also sets the +.Dq R +option. This is intended for debugging and will impact performance negatively. .It H Pass a hint to the kernel about pages unused by the allocation functions. @@ -183,8 +190,11 @@ extern char *malloc_options; malloc_options = "X"; .Ed .It Z -Initialize all allocated memory to nul bytes, and overwrite any -surrounding memory necessary for alignment reasons with 0xd0 bytes. +This option implicitly sets the +.Dq J +and +.Dq R +options, and then zeros out the bytes that were requested. This is intended for debugging and will impact performance negatively. .It < Reduce the size of the cache by a factor of two. |
