7 Commits

Author	SHA1	Message	Date
John Dyson	96cc6b1011	Kva space allocated for direct buffer wasn't quite big enough. The ... system can panic easily without this patch.	1996-02-05 05:17:15 +00:00
John Dyson	dca5129987	Changed vm_fault_quick in vm_machdep.c to be global. Needed for ... new pipe code.	1996-02-04 22:09:12 +00:00
John Dyson	2834ceec7c	Improve the performance for pipe(2) again. Also include some ... fixes for previous version of new pipes from Bruce Evans. This new version: Supports more properly the semantics of select (BDE). Supports "OLD_PIPE" correctly (kern_descrip.c, BDE). Eliminates incorrect EPIPE returns (bash 'pipe broken' messages.) Much faster yet, currently tuned relatively conservatively -- but now gives approx 50% more perf than the new pipes code did originally. (That was about 50% more perf than the original BSD pipe code.) Known bugs outstanding: No support for async io (SIGIO). Will be included soon. Next to do: Merge support for FIFOs. Submitted by: bde	1996-02-04 19:56:35 +00:00
John Dyson	4ab7a1a6c7	Fix another problem with the new pipe code, pointed out by Bruce Evans. ... This one fixes a problem with interactions with signals.	1996-01-31 06:00:45 +00:00
John Dyson	56363b79a9	Fix some problems with return codes on the new pipe stuff. Bruce Evans ... found the problems, and this commit will fix the "first batch" :-).	1996-01-31 02:05:12 +00:00
John Dyson	4fd00d508b	Fixed an uninitialized variable (argument to vm_map_find) -- problem ... that DG detected, and promptly found a fix. Submitted by: davidg	1996-01-29 02:57:33 +00:00
John Dyson	10c5615c1d	Added new files to support the new fast pipes. After the follow-on ... commits, pipe performance should increase significantly. The pipe(2) system call is currently supported, while fifofs will be added later.	1996-01-28 23:38:26 +00:00