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Author SHA1 Message Date
sperber ac343ba970 Replace Martin's implementation of selective blocking by the one in 
Scheme 48 1.0.1.

Namely, instead of associating a list of queues with every thread, we
associate a single cell, holding the thread.  That cell is stored in
thread queues, and once a thread is made runnable again, the cell is
set to #f.  The thread-queue accessors ignore cells containing #f.

Implement an experimental OBTAIN-LOCK-MULTIPLE to test the whole
thing.
 2002-08-16 14:11:50 +00:00
mainzelm ea31d95dbc All the SRFIs from S48 0.57. 2002-04-04 08:44:49 +00:00
sperber 136e313af7 New implementation of (no-inheritance) thread-local cells and thread 
fluids.

New implementation of syslog.

Both are to be compatible with what's actually probably going into
Scheme 48.
 2001-12-03 15:21:46 +00:00
sperber 8f02923726 Added thread-fluids which are a cross between thread cells and fluids. 
They encapsulate thread-local state and have a binding construct
analogous to LET-FLUID.
 2001-05-28 13:44:48 +00:00
sperber 21a8e255eb Added thread-cells structure for thread-local cells. 
These can be used (together with fluids) to implement something akin
to PLT's and Chez's parameters for holding thread-local state such as
CWD, syslog channel, etc.
 2001-05-22 14:58:15 +00:00
marting eaf83d0524 added some exports for scsh 1999-09-19 19:03:51 +00:00
marting 606245fc41 *** empty log message *** 1999-09-14 12:45:02 +00:00