[Sbcl-commits] CVS: sbcl/src/compiler/ppc parms.lisp,1.21,1.22

[<me...@us...>]

Update of /cvsroot/sbcl/sbcl/src/compiler/ppc
In directory sc8-pr-cvs1.sourceforge.net:/tmp/cvs-serv11137/src/compiler/ppc

Modified Files:
	parms.lisp 
Log Message:
0.9.3.41: gc trigger

  * implementation changes

    The *NEED-TO-COLLECT-GARBAGE* special is gone. A similar - but
    per-thread - special: *GC-PENDING* is here. It is set by both gencgc
    and cheneygc trigger.

    In threaded builds SIG_STOP_FOR_GC is no longer deferrable by the
    normal deferral mechanism and rules. It is only deferred in pseudo
    atomic sections and when *GC-INHIBIT*. There is another
    per-thread special for this purpose: *STOP-FOR-GC-PENDING*.

    Whenever *GC-INHI-BIT* is cleared (either by a GC-ON or when exiting
    a WITHOUT-GCING) the pending gc or the signal handler is run:

      (when (and (not *gc-inhibit*)
                 (or #!+sb-thread *stop-for-gc-pending*
                     *gc-pending*))
        (sb!unix::receive-pending-interrupt))

    On the receiving side interrupt_handle_pending is made clever enough
    not to run pending handlers whose time has not come (i.e. in a
    WITHOUT-INTERRUPTS it only does gc and leaves the pending handlers
    alone).

  * the bugs fixed

    ** WITHOUT-INTERRUPTS no longer blocks gc from the current or other
       threads.

    ** WITHOUT-GCING on the other hand correctly defers gc, be it
       automatically triggered or explicitly called, and SIG_STOP_FOR_GC.

    ** GC-{ON,OFF} now work within WITHOUT-GCING, too

    ** the gc trigger is more reliable as it does not share the
       interrupt deferral mechanism, most notably sb-sprof does not make
       triggering gc any harder


Index: parms.lisp
===================================================================
RCS file: /cvsroot/sbcl/sbcl/src/compiler/ppc/parms.lisp,v
retrieving revision 1.21
retrieving revision 1.22
diff -u -d -r1.21 -r1.22
--- parms.lisp	14 Jul 2005 18:48:33 -0000	1.21
+++ parms.lisp	11 Aug 2005 14:44:16 -0000	1.22
@@ -168,9 +168,8 @@
     *free-interrupt-context-index*
     sb!unix::*interrupts-enabled*
     sb!unix::*interrupt-pending*
-
-
-    ))
+    *gc-inhibit*
+    *gc-pending*))
 
 (defparameter *static-funs*
   '(length