[Sbcl-commits] CVS: sbcl NEWS, 1.1230, 1.1231 version.lisp-expr, 1.3540, 1.3541

[Nikodemus S. <de...@us...>]

Update of /cvsroot/sbcl/sbcl
In directory sc8-pr-cvs8.sourceforge.net:/tmp/cvs-serv5898

Modified Files:
	NEWS version.lisp-expr 
Log Message:
1.0.8.16: refactored fd-stream buffering

 Thanks to David Smith and Andreas Bogkt who diagnosed the memory
 leaks this patch fixes.

 * Instead of having FD-STREAM objects directly hold onto input and
   output buffer SAPs and head/tail indexes, use BUFFER objects which
   contain the SAP, size of the memory area, head/tail indexes, and
   are have finalizers to deallocate the system memory assosicated
   with the SAP. (This fixes system memory leaks when streams are not
   properly closed.)

 * Make CLOSE :ABORT release the output queue associated with the
   stream. (This was another memory leak in the old system: now
   the finalizers make not doing this safe, but it's still better
   to recycle the buffers.)

 * Slightly reduce lock contention by grabbing the *AVAILABLE-BUFFERS*
   lock only if there is something there right before the lock is
   taken, and by doing allocation outside the lock.

 * Rename and refactor FROB-OUTPUT and friends:

     BUFFER-OUTPUT is the main interface function, which always
       adds new output to the current buffer / output queue.

     WRITE-OR-BUFFER-OUTPUT tries to write immediately, falling
       back to buffering if writing is not possible.

     WRITE-OUTPUT-FROM-QUEUE is called by the SERVE-EVENT
       system to deal with output queue.

     FLUSH-OUTPUT-BUFFER writes the current buffer out if possible,
       queues it otherwise. Ensures that the output buffer of
       the stream is empty on return (and returns that buffer).

 * Deprecate SB-SYS:OUTPUT-RAW-BYTES. There doesn't seem to be any
   real reason to export this kind of stuff.

 * Increment the fasl version.



Index: NEWS
===================================================================
RCS file: /cvsroot/sbcl/sbcl/NEWS,v
retrieving revision 1.1230
retrieving revision 1.1231
diff -u -d -r1.1230 -r1.1231
--- NEWS	27 Jul 2007 12:09:10 -0000	1.1230
+++ NEWS	6 Aug 2007 11:50:46 -0000	1.1231
@@ -1,9 +1,15 @@
 ;;;; -*- coding: utf-8; -*-
 changes in sbcl-1.0.9 relative to sbcl-1.0.8:
+  * minor incompatible change: SB-SYS:OUTPUT-RAW-BYTES is deprecated.
   * bug fix: new compiler transforms for MEMBER and ASSOC were affected
     by printer control variables. (reported by Dan Corkill)
   * bug fix: system leaked memory when delayed output was performed by
     the OS in smaller chunks then expected. (thanks to David Smith)
+  * bug fix: system leaked memory when file streams were not closed 
+    properly.
+  * bug fix: large objects written to slow streams that were modified
+    after the write could end up with the modified state written to
+    the underlying file descriptor.
 
 changes in sbcl-1.0.8 relative to sbcl-1.0.7:
   * enhancement: experimental macro SB-EXT:COMPARE-AND-SWAP provides

Index: version.lisp-expr
===================================================================
RCS file: /cvsroot/sbcl/sbcl/version.lisp-expr,v
retrieving revision 1.3540
retrieving revision 1.3541
diff -u -d -r1.3540 -r1.3541
--- version.lisp-expr	4 Aug 2007 14:49:32 -0000	1.3540
+++ version.lisp-expr	6 Aug 2007 11:50:46 -0000	1.3541
@@ -17,4 +17,4 @@
 ;;; checkins which aren't released. (And occasionally for internal
 ;;; versions, especially for internal versions off the main CVS
 ;;; branch, it gets hairier, e.g. "0.pre7.14.flaky4.13".)
-"1.0.8.15"
+"1.0.8.16"