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102 Commits

Author SHA1 Message Date
mainzelm 6a8b7f6145 When closing an output port, capture any errors while flushing the 
port and try to close the port immediately instead.
 2003-01-08 09:26:58 +00:00
mainzelm 804362834b Extend with-errno to capture all I/O exceptions of the VM: 
+ add errno as first argument to raise-exception os-error in prim-io.scm

+ capture os-error in with-errno-handler* and adjust exception
  arguments to fit errno-handlers
 2003-01-08 09:16:47 +00:00
mainzelm 5da13e0f55 Merged definition of byte-vector from S48 1.0. 2003-01-07 10:30:37 +00:00
sperber e2557c7200 Add forgotten OPEN clause for SIGNALS in READING-FORMS. 2002-12-19 10:02:31 +00:00
mainzelm 2fcc149269 Added forgotten export of srfi-13: string-concatenate-reverse/shared 2002-12-17 15:49:54 +00:00
sperber 69a2031350 Replace half-assed DYNAMIC-WIND protection of input port by the one 
Richard Kelsey suggested for Scheme 48.
 2002-12-17 13:50:14 +00:00
sperber 4c90a345ec In READ-FORMS, open/close input port in DYNAMIC-WIND before/after 
thunks.
 2002-12-16 11:00:11 +00:00
sperber 3a1439a16e Remove warning message "Warning: dropping ignored channel i/o result" 
because it can be legitimately triggered by WAIT-FOR-CHANNELS.
 2002-12-11 12:40:29 +00:00
sperber 6fc80dfb4b Fix typo: remove double application of MAKE-I/O-COMPLETION-HANDLER. 2002-11-12 13:13:02 +00:00
mainzelm a1e9e54bbc Add lookup-external from recent S48 (it's already described in the manual). 2002-11-07 09:43:29 +00:00
mainzelm 17b1a55c8b + Factor out pending interrupts into a separate package. 
+ Let vm-channel-abort clear the pending-i/o interrupt if the queue became empty
 2002-09-27 12:44:43 +00:00
sperber 5b47488938 Include half-assed implementation of ADD-PENDING-CHANNEL. 2002-09-19 07:08:16 +00:00
sperber d14e638e10 Replace hacked-up VM-CHANNEL-ABORT by a version that's simpler and 
closer to the original.
 2002-09-19 07:07:40 +00:00
mainzelm 9950aa7205 Wrap an additional (lambda a ...) around the application of (terminate-current-thread) in terminate-thread! as the continuation may provide any number of values 2002-09-18 19:16:23 +00:00
sperber d21334de83 Keep separate queues for input and output channels, so the VM doesn't 
get confused handling events/interrupts.
I despise myself.
 2002-09-18 14:56:31 +00:00
mainzelm 5cb76fd27b Replace call to channel-has-waiter? by channel-check-waiter. 2002-09-17 21:22:41 +00:00
mainzelm 3c07ebb50f PROTECT-PORT-OP saves the return value of CLOSE so better return (if #f #f) than (values). 2002-09-11 14:38:56 +00:00
mainzelm 024d938e39 Added SRFI 25, 26, 27, 28, 30. 2002-09-11 14:34:58 +00:00
mainzelm cd9907c68f Fixed bug in the reference implementation reported by Vladimir Tsichevski on c.l.s.. 2002-09-09 08:03:59 +00:00
sperber e3d6f985fc Put back an accidentally elided ELSE branch in PLACEHOLDER-SET! 2002-09-06 14:11:36 +00:00
mainzelm 854f9d18e1 Removed duplicate definition of S48_ENTER/EXTRACT_BOOLEAN. 2002-09-06 11:57:53 +00:00
mainzelm 1599136ffa Added map, for-each, member, assoc to srfi-1-interface 2002-09-04 08:23:47 +00:00
sperber 33c14d7901 First stab at implementing SELECT/SELECT!: 
- extend the VM interrupts to distinguish between read and write
  events
- add new ADD-PENDING-CHANNEL instruction to the VM
- add WAIT-FOR-CHANNELS procedure to the run-time system
- implement SELECT and SELECT! on top of that in newports.scm

This runs some basic tests, but in general should be considered
largely untested.

Moreover, SELECT/SELECT! never detect any exceptional conditions---the
returned vectors are always empty.  This is because the VM doesn't
really track those, and it's unclear whether it would be worth the
effort.
 2002-08-20 14:03:01 +00:00
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 8f1dfb6935 Ensure that newspace is the space in front when dumping an image the 
prevent relocation on startup.
 2002-08-15 16:35:26 +00:00
mainzelm 4e5b87209d Added ignore-port-locks? flag to output-port-forcers and use it in 
flush-all-ports-no-threads.
 2002-06-26 11:25:33 +00:00
mainzelm bbfd094bbd Queue os-signal events. 2002-06-10 08:46:08 +00:00
mainzelm aed248d24b First version of libscsh. 2002-05-16 14:50:46 +00:00
sperber 1d35626709 Redo the forking-without-the-threads fix in a way not involving 
command levels (as there *are* no command levels for things like scsh
-c):

There's now a new asynchronous event, similar to SPAWN, called NARROW.
It spawns off a new scheduler with just one thread (which runs the
thunk provided as an argument to NARROW) and blocks the current one
until the narrowed scheduler finishes.

For this to work, two schedulers need to be in place: the root
scheduler which performs the housekeeping, and another one inside that
which is the one the program uses---otherwise it's the root scheduler
that's blocked, and that means no housekeeping gets done.  This is
trivially the case for interactive mode, as the command-levels all
have their own schedulers, but we also need to make sure scsh's entry
point fires up its own initial scheduler.
 2002-05-03 13:42:36 +00:00
sperber 2a302178e6 Provide names for housekeeping threads for better debugging. 2002-05-03 13:36:15 +00:00
sperber 104ed36666 Export PRESERVE-THREAD-FLUIDS from THREAD-FLUIDS. 2002-04-12 14:29:25 +00:00
mainzelm fe5c9a3783 Cells for thread-env's fluid-cell-{ref,set!}. 2002-04-04 08:45:28 +00:00
mainzelm ea31d95dbc All the SRFIs from S48 0.57. 2002-04-04 08:44:49 +00:00
mainzelm 66a5384a98 alt/ from S48 0.57. 2002-04-04 08:36:20 +00:00
mainzelm ffa5461a39 Added fluid-cell-ref and fluid-cell-set!. 2002-04-04 08:22:20 +00:00
mainzelm 06b68b7c5e Cells as stob (from S48 0.57). 2002-04-04 08:13:53 +00:00
mainzelm 6f083d7205 Small renamer for clarity. 2002-04-04 08:09:15 +00:00
mainzelm 5aee745efb New module language from S48 0.57. 2002-04-03 12:17:19 +00:00
sperber b4312d028c Be even more thorough about releasing port locks after exceptions. 2002-02-28 08:29:04 +00:00
sperber f5d853712b Remove STEAL-CHANNEL-PORT! which has been unused for a while now and 
uncomfortably shared code with STEAL-PORT!
 2002-02-28 08:28:32 +00:00
sperber 12ced00589 Make sure port locks get released after I/O errors. 2002-02-26 14:40:21 +00:00
mainzelm 150031d918 Revive these wonderful debugging tools. 2002-02-12 07:54:22 +00:00
sperber baf1dbbf76 Pass optional arguments from FORK-THREAD to SPAWN. 2002-02-04 11:34:17 +00:00
mainzelm 2b1d8a3d01 Let s48-do-gc return 0 so the PreScheme compiler will emit the correct 
signature of the function.
 2002-02-01 10:25:50 +00:00
sperber 7c026ff0b4 Fix external-call-from-callback problem leading to spurious 
gc-protection-mismatch exceptions.
 2002-01-27 20:20:53 +00:00
mainzelm 284d89fe12 Added hook to align cwd and umask for the S48 system. 2001-12-19 09:14:15 +00:00
mainzelm 8bba3a13e1 Adjust top of stack as well. 2001-12-04 13:06:12 +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 b5180b35af Make naming consistent with current Scheme 48: 
argtype -> argument_type
argnumber -> argument_number
 2001-12-03 15:19:48 +00:00
mainzelm 1ed75d8531 Let thread-uid->thread invoke the GC if it encounters multiple threads with the same uid. 2001-11-08 10:24:41 +00:00