| History log of /src/usr.bin/sort/append.c |
| Revision | | Date | Author | Comments |
| 1.23 |
| 06-Nov-2009 |
joerg | Retire __SCCSID. It has only archeological value now. Also retire lint
conditional around __RCSID, lint can handle that fine.
|
| 1.22 |
| 10-Sep-2009 |
dsl | Save length of key instead of relying of the weight of the record sep.
This frees a byte value to use for 'end of key' (to correctly sort
short keys) while still having a weight assigned to the field sep.
(Unless -t is given, the field sep is in the field data.)
Do reverse sorts by writing the output file in reverse order (rather
than reversing the sort - apart from merges).
All key compares are now unweighted.
For 'sort -u' mark duplicates keys during the sort and don't write
to the output.
Use -S to mean a posix sort - where equal keys are sorted using the
raw record (rather than being kept in the original order).
For 'sort -f' (no keys) generate a key of the folded data (as for -n
-i and -d), simplifies the code and allows a 'posix' sort.
|
| 1.21 |
| 05-Sep-2009 |
dsl | Now we have our own radix_sort() change the interface so that we pass
an array of 'RECHEADER *' and remove all the crappy stuff that backed up
by REC_DATA_OFFSET (etc).
Also change radix_sort() to return the number of elements, soon to be used
to drop duplicate keys (for sort -u).
|
| 1.20 |
| 22-Aug-2009 |
dsl | Rework the way sort generates sort keys:
- If we generate a key, it is always sortable using memcmp()
- If we are sorting the whole record, then a weight-table must be used
during compares.
- Major surgery to encoding of numbers to ensure unique keys for equal
numeric values. Reverse numerics are handled by inverting the sign.
- Case folding (-f) is handled when the sort keys are generated. No other
code has to care at all.
- Key uniqueness (-u) is done during merge for large datasets. It only
has to be done when writing the output file for small files.
Since the file is in key order this is simple!
Probably fixes all of: PR/27257 PR/25551 PR/22182 PR/31095 PR/30504
PR/36816 PR/37860 PR/39308
Also PR/18614 should no longer die, but a little more work needs to be
done on the merging for very large files.
|
| 1.19 |
| 20-Aug-2009 |
dsl | Delete more unwanted/unused cruft.
Simplify logic for reading input records.
Do a merge sort whenever we have 16 partial sorted blocks.
The patient is breathing, but still carrying a lot of extra weight.
|
| 1.18 |
| 18-Aug-2009 |
dsl | The code that attempted to sort large files by sorting each chunk by the
first key byte and writing to a temp file, then sorting the records from
each temp file that had the same first key byte (and repeating for upto
4 key bytes) was a nice idea, but completely doomed to failure.
Eg PR/9308 where a 70MB file has all but one record the same and short keys.
Not only does the code not work, it is rather guaranteed to be slow.
Instead always use a merge sort for fully sorted chunk of records (each
temporary file contains one lot of sorted records).
The -H option already did this, so just rip out all the code and variables
that can't be used when -H was specified.
Further cleanup to come ...
|
| 1.17 |
| 16-Aug-2009 |
dsl | 'depth' is used for the number of bytes into the key that the pointers
reference, when we want to find the record header put the larger value
into 'hdr_off' to avoid any confusion that the code might be changing
'depth'!
There is now no need to save the original value as 'odepth' in append.c.
All an a vague attempt to make this code slightly readable.
|
| 1.16 |
| 16-Aug-2009 |
dsl | Replace all uses of sizeof(TRECHEADER) with REC_DATA_OFFSET - which
is defined as offsetof(RECHEADER, data). Delete TRECHEADER.
|
| 1.15 |
| 15-Aug-2009 |
dsl | Ansify.
I'm looking at fixing the 'sort -n' fubars, but this code is an
inpeneterable mess - which needs some fixing first!
|
| 1.14 |
| 28-Apr-2008 |
martin | branches: 1.14.6; 1.14.12;
Remove clause 3 and 4 from TNF licenses
|
| 1.13 |
| 15-Feb-2004 |
jdolecek | branches: 1.13.32;
fix some cases of use of unitialized variables
|
| 1.12 |
| 07-Aug-2003 |
jdolecek | add TNF copyright
|
| 1.11 |
| 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.
|
| 1.10 |
| 19-Feb-2001 |
jdolecek | Pull up various cosmetic (mostly whitespace) changes from OpenBSD.
This is primarily to ease syncing the two versions.
|
| 1.9 |
| 18-Jan-2001 |
jdolecek | cosmetic style change
|
| 1.8 |
| 11-Jan-2001 |
jdolecek | general cleanup of file list passing:
* get rid of union f_handle, replace by passing explicit int parameter
and (new) struct filelist
* add new typedefs gen_func_t and put_func_t and use where appropriate
|
| 1.7 |
| 08-Jan-2001 |
jdolecek | by default, use stable sort
add -S flag to switch to non-stable sort; for GNU sort compatibility,
provide -s flag too
|
| 1.6 |
| 17-Oct-2000 |
jdolecek | fix bugs caused by implicit assumption that 'length' and
'offset' members of struct recheader/trecheader are shorts - they are size_t
now
this makes sort pass all tests in TEST/stests again after my last change
other misc cosmetic changes
|
| 1.5 |
| 16-Oct-2000 |
jdolecek | constify
|
| 1.4 |
| 15-Oct-2000 |
jdolecek | don't use register declarations
|
| 1.3 |
| 07-Oct-2000 |
bjh21 | Two classes of changes from the initial OpenBSD commit of this sort(1):
FILE * variables are called "fp" rather than "fd".
Better (safer) temporary-file handling.
|
| 1.2 |
| 07-Oct-2000 |
bjh21 | Hit sort(1) with a hammer till it compiles.
Also add RCSIDs.
|
| 1.1 |
| 07-Oct-2000 |
bjh21 | branches: 1.1.1;
Initial revision
|
| 1.1.1.1 |
| 07-Oct-2000 |
bjh21 | 4.4BSD-Lite2 contrib/sort
|
| 1.13.32.1 |
| 18-May-2008 |
yamt | sync with head.
|
| 1.14.12.1 |
| 21-Apr-2010 |
matt | sync to netbsd-5
|
| 1.14.6.1 |
| 14-Oct-2009 |
sborrill | Pull up the following revisions(s) (requested by dsl in ticket #1084):
usr.bin/sort/Makefile: revision 1.6-1.8
usr.bin/sort/append.c: revision 1.15-1.22
usr.bin/sort/fields.c: revision 1.20-1.30
usr.bin/sort/files.c: revision 1.27-1.40
usr.bin/sort/fsort.c: revision 1.33-1.45
usr.bin/sort/fsort.h: revision 1.14-1.17
usr.bin/sort/init.c: revision 1.19-1.23
usr.bin/sort/msort.c: revision 1.19-1.28
usr.bin/sort/radix_sort.c: revision 1.1-1.4
usr.bin/sort/sort.1: revision 1.27-1.29
usr.bin/sort/sort.c: revision 1.47-1.56
usr.bin/sort/sort.h: revision 1.20-1.30
usr.bin/sort/tmp.c: revision 1.14-1.15
Only use radix sort for in-memory sort, always merge temporary files.
Use a local radixsort() function so we can pass record length.
Avoid use of weight tables for key compares.
Fix generation of keys for numbers, negate value for reverse sort.
Write file in reverse-key order for 'sort -n'.
'sort -S' now does a posix sort (sort matching keys by record data).
Ensure merge sort doesn't have too many temporary files open.
Fixes: PR#18614 PR#27257 PR#25551 PR#22182 PR#31095 PR#30504 PR#36816
PR#37860 PR#39308 PR#42094
|
