| History log of /src/usr.bin/cmp/regular.c |
| Revision | | Date | Author | Comments |
| 1.26 |
| 12-Jan-2025 |
simonb | Make cmp -s and cmp -l much faster by comparing blocks and skipping any
line number calculations not needed. Approx 3-4x faster for two multi-GB
in-cache files on my Zen 3.
Restores the spirit of a NetII optimisation lost with 4.4lite2 import
in 1995.
|
| 1.25 |
| 09-Jan-2021 |
christos | PR/55916: William Ahern: cmp -s + regular files + skipping is broken
Move test after length is adjusted
|
| 1.24 |
| 20-Nov-2013 |
kleink | Explicitly include <stdint.h> for uintmax_t; from Eitan Adler.
|
| 1.23 |
| 28-Nov-2011 |
wiz | branches: 1.23.6;
Remove unused header. From Henning Petersen in PR 45658.
|
| 1.22 |
| 18-Apr-2009 |
lukem | branches: 1.22.6;
Compare size_t vs off_t by casting both to uintmax_t
|
| 1.21 |
| 11-Apr-2009 |
lukem | Fix WARNS=4 issues (many -Wcast-qual, one -Wsign-compare on amd64)
|
| 1.20 |
| 03-Jun-2006 |
christos | branches: 1.20.28;
off-by-one (thanks to our anonymous contributor)
|
| 1.19 |
| 03-Jun-2006 |
christos | If one file is shorter than the other, print the byte and line offsets if
available. From our anonymous contributor.
|
| 1.18 |
| 11-Apr-2005 |
enami | branches: 1.18.2;
Don't put a space before function call operator.
|
| 1.17 |
| 11-Apr-2005 |
enami | byte offset and line count shouldn't be initialized inside the loop.
|
| 1.16 |
| 11-Apr-2005 |
enami | Fix indent and wrap long lines.
|
| 1.15 |
| 07-Mar-2005 |
dsl | Initialise dfound outside loop so that 0 sized files compare correctly
and to that 'cmp -l' will exit with error is the last block matches.
Pointed out in a private mail bt someone who wishes to remain anonymous.
|
| 1.14 |
| 06-Feb-2005 |
dsl | mmap normal files in 1MB chunks.
Due to a bug in mmap() the address space isn't counted against ulimit
until the page is faulted in - so mmapping a large file suceeds, but
cmp SIGSEGVs when it runs out of address space.
Also I don't believe that the madvise( MAP_SEQUENTIAL) has the desired
effect, and mmaping a large file is probably very bad for the UBC.
|
| 1.13 |
| 06-Feb-2005 |
dsl | Taking (out) the __P
|
| 1.12 |
| 07-Aug-2003 |
agc | Move UCB-licensed code from 4-clause to 3-clause licence.
Patches provided by Joel Baker in PR 22365, verified by myself.
|
| 1.11 |
| 04-Jan-2001 |
lukem | use %ll_ instead of the less standard %q_
|
| 1.10 |
| 27-Jul-2000 |
mycroft | Use MAP_SHARED.
|
| 1.9 |
| 18-Jul-2000 |
jdolecek | Do not mmap() with MAP_PRIVATE - looks like kernel tries to preallocate
some memory in case the mmapped contents would be changed and this fails
for very large files; it's unnecessary anyway, cmp(1) does not change file
contents in any way.
This fixes bin/10625 by Uwe Klaus.
While here, change the code to fallback to classic stdio if mmap fails.
|
| 1.8 |
| 20-Mar-2000 |
kleink | branches: 1.8.4;
* Hint MADV_SEQUENTIAL.
* -1 -> MAP_FAILED.
|
| 1.7 |
| 25-Aug-1998 |
ross | Add { and } to shut up egcs. Reformat the more questionable code.
|
| 1.6 |
| 09-Dec-1997 |
mrg | use MAP_PRIVATE|MAP_FILE rather than "0"
|
| 1.5 |
| 19-Oct-1997 |
mrg | fix compile warnings on the alpha.
|
| 1.4 |
| 18-Oct-1997 |
lukem | WARNSify, fix .Nm usage
|
| 1.3 |
| 09-Jan-1997 |
tls | RCS ID police
|
| 1.2 |
| 08-Sep-1995 |
tls | Sync with 4.4lite2
|
| 1.1 |
| 04-Sep-1995 |
tls | branches: 1.1.1;
Initial revision
|
| 1.1.1.1 |
| 04-Sep-1995 |
tls | imported from 44lite2
|
| 1.8.4.2 |
| 24-Aug-2000 |
enami | Pull up rev. 1.10 (approved by thorpej):
date: 2000/07/27 02:58:57; author: mycroft; state: Exp; lines: +4 -4
Use MAP_SHARED.
|
| 1.8.4.1 |
| 20-Jul-2000 |
jdolecek | do not mmap() with MAP_PRIVATE - it's not needed for cmp(1) and causes
memory shortage for bigger files.
This fixes bin/10625 by Uwe Klaus.
While here, change the code to fallback to classic stdio in (now unlikely)
case mmap() fails.
|
| 1.18.2.1 |
| 19-Jun-2006 |
chap | Sync with head.
|
| 1.20.28.1 |
| 13-May-2009 |
jym | Sync with HEAD.
Third (and last) commit. See http://mail-index.netbsd.org/source-changes/2009/05/13/msg221222.html
|
| 1.22.6.2 |
| 22-May-2014 |
yamt | sync with head.
for a reference, the tree before this commit was tagged
as yamt-pagecache-tag8.
this commit was splitted into small chunks to avoid
a limitation of cvs. ("Protocol error: too many arguments")
|
| 1.22.6.1 |
| 17-Apr-2012 |
yamt | sync with head
|
| 1.23.6.1 |
| 20-Aug-2014 |
tls | Rebase to HEAD as of a few days ago.
|
