mit-scheme.git
8 years agoDon't export REDUCE-LEFT from (runtime list).
Joe Marshall [Tue, 19 Jan 2016 16:25:47 +0000 (08:25 -0800)]
Don't export REDUCE-LEFT from (runtime list).

8 years agoUse FOLD-LEFT instead of REDUCE-LEFT.
Joe Marshall [Tue, 19 Jan 2016 16:22:33 +0000 (08:22 -0800)]
Use FOLD-LEFT instead of REDUCE-LEFT.

8 years agoUndo delayed adding of hash-table to population. Instead, skip uniqueness check...
Joe Marshall [Mon, 18 Jan 2016 19:45:37 +0000 (11:45 -0800)]
Undo delayed adding of hash-table to population.  Instead, skip uniqueness check on new hash-tables.

8 years agoAdd open-unix-server-socket and unix-server-connection-accept...
Matt Birkholz [Sat, 16 Jan 2016 20:56:18 +0000 (13:56 -0700)]
Add open-unix-server-socket and unix-server-connection-accept...

...and close-unix-server-socket.

8 years agoAdd MONITOR-WORLD Edwin command displaying an animated world-report.
Matt Birkholz [Sun, 17 Jan 2016 00:47:51 +0000 (17:47 -0700)]
Add MONITOR-WORLD Edwin command displaying an animated world-report.

8 years agoAdd a WORLD-REPORT procedure to write a state-of-the-world report...
Matt Birkholz [Sat, 16 Jan 2016 19:45:15 +0000 (12:45 -0700)]
Add a WORLD-REPORT procedure to write a state-of-the-world report...

...showing the current time, heap free, recent GC statistics, and the
known threads.

8 years agoAdd crude thread time accounting.
Matt Birkholz [Sat, 16 Jan 2016 21:56:39 +0000 (14:56 -0700)]
Add crude thread time accounting.

8 years agosrc/runtime/savres.scm (disk-save): Save time world was restored.
Matt Birkholz [Fri, 15 Jan 2016 00:55:40 +0000 (17:55 -0700)]
src/runtime/savres.scm (disk-save): Save time world was restored.

8 years agosrc/runtime/output.scm (write-strings-in-paragraph): Add.
Matt Birkholz [Fri, 15 Jan 2016 00:53:59 +0000 (17:53 -0700)]
src/runtime/output.scm (write-strings-in-paragraph): Add.

8 years agosrc/runtime/gcnote.scm (gc-statistic->string): Abbreviate...
Matt Birkholz [Sun, 17 Jan 2016 18:49:04 +0000 (11:49 -0700)]
src/runtime/gcnote.scm (gc-statistic->string): Abbreviate...

...to keep each line under 80 columns (at least at first).

8 years agoTypos.
Joe Marshall [Sun, 17 Jan 2016 01:20:27 +0000 (17:20 -0800)]
Typos.

8 years agoDon't blow out the stack in STREAM->LIST.
Joe Marshall [Sat, 16 Jan 2016 23:53:58 +0000 (15:53 -0800)]
Don't blow out the stack in STREAM->LIST.

8 years agoDon't add table to rehash population until an entry is created.
Joe Marshall [Sat, 16 Jan 2016 23:51:23 +0000 (15:51 -0800)]
Don't add table to rehash population until an entry is created.

8 years agoAdd STREAM-LAST and STREAM-TRUNCATE. Fixed a typo.
jmarshall [Sat, 16 Jan 2016 04:50:27 +0000 (20:50 -0800)]
Add STREAM-LAST and STREAM-TRUNCATE.  Fixed a typo.

8 years agoReturn 0 from OS_test_select_* ONLY if there are no pending...
Matt Birkholz [Tue, 5 Jan 2016 23:15:11 +0000 (16:15 -0700)]
Return 0 from OS_test_select_* ONLY if there are no pending...

...interrupts or subprocess status changes.

8 years agoAdd foreach_async_signal and an ASYNC flag for signal descriptors.
Matt Birkholz [Tue, 5 Jan 2016 23:11:41 +0000 (16:11 -0700)]
Add foreach_async_signal and an ASYNC flag for signal descriptors.

glibio.c uses this to set up its signal forwarder.

8 years agoDo not randomize the FPU control word in x87_read_environment.
Matt Birkholz [Tue, 5 Jan 2016 23:09:04 +0000 (16:09 -0700)]
Do not randomize the FPU control word in x87_read_environment.

Looks like a typo: eax not replaced by rdi.

8 years agoDo not initialize the floating-point environment in x86-64 assembly.
Matt Birkholz [Tue, 5 Jan 2016 23:07:22 +0000 (16:07 -0700)]
Do not initialize the floating-point environment in x86-64 assembly.

The floating-point environment is managed (and needs to be
initialized) by libc.

8 years agoDo not initialize the floating-point environment in i386 assembly.
Matt Birkholz [Tue, 5 Jan 2016 22:55:59 +0000 (15:55 -0700)]
Do not initialize the floating-point environment in i386 assembly.

The floating-point environment is managed (and needs to be
initialized) by libc.

8 years agoAdd interrupts_p and OS_select_registry_entry for glib/glibio.c.
Matt Birkholz [Tue, 5 Jan 2016 22:46:24 +0000 (15:46 -0700)]
Add interrupts_p and OS_select_registry_entry for glib/glibio.c.

8 years agoAdd an ignore_status_change parameter to OS_pause for SMP-IDLE.
Matt Birkholz [Tue, 5 Jan 2016 22:40:55 +0000 (15:40 -0700)]
Add an ignore_status_change parameter to OS_pause for SMP-IDLE.

OS_pause previously returned immediately if there were pending
interrupts OR subprocess status changes, as required by a blocking
test-select-registry primitive.  That made it useless to the SMP-IDLE
primitive, which spins in the idle loop until the io-waiter (or a
timer interrupt handler) gets around to syncing subprocess statuses.
It will spin too after getting a SIGCHLD until statuses are synced.

8 years agoPunt without-preemption; use without-interrupts during callouts.
Matt Birkholz [Tue, 5 Jan 2016 18:45:39 +0000 (11:45 -0700)]
Punt without-preemption; use without-interrupts during callouts.

Using without-preemption in (runtime ffi) causes timer interrupts to
be ignored -- COMPLETELY ignored in the glxgears demo's animation
loop.  It is probably no more helpful in with-obarray-lock(?).

8 years agoUpdate copyright years.
Matt Birkholz [Sun, 3 Jan 2016 21:41:54 +0000 (14:41 -0700)]
Update copyright years.

8 years agodist/update-copyright.scm: Translate last-copyright-year.
Matt Birkholz [Sun, 3 Jan 2016 21:29:09 +0000 (14:29 -0700)]
dist/update-copyright.scm: Translate last-copyright-year.

8 years agodist/update-copyright.scm: Update files in place.
Matt Birkholz [Sun, 3 Jan 2016 21:27:57 +0000 (14:27 -0700)]
dist/update-copyright.scm: Update files in place.

Start with a clean working tree and you can `git reset --hard HEAD'
when the translation goes badly.

8 years agoNote last-statistic early in signal-gc-events.
Matt Birkholz [Fri, 11 Dec 2015 17:28:50 +0000 (10:28 -0700)]
Note last-statistic early in signal-gc-events.

The signaled thread events may run whenever, perhaps after
last-statistic is changed.  Ensure all the thread events get the same
statistic -- the last-statistic when the events were sent.

8 years agoedwin: Eliminate redundant thread event when setting run-light.
Matt Birkholz [Fri, 11 Dec 2015 17:25:06 +0000 (10:25 -0700)]
edwin: Eliminate redundant thread event when setting run-light.

Using inferior-thread-output! in wait-for-input's thread event signals
another thread event unnecessarily.  The new inferior-thread-run-
light! just sets the flags.

8 years agoEliminate multiple trigger-gc-deamons!.
Matt Birkholz [Fri, 11 Dec 2015 17:16:50 +0000 (10:16 -0700)]
Eliminate multiple trigger-gc-deamons!.

The GC notification in GC events reveals that the after-gc interrupt
handler can run multiple times after one GC.  This seems to happen
when a timer interrupt occurs during trigger-gc-daemons!.  Thread
switching leads to re-signaling.  (Was it assumed interrupt handlers
would not allow thread switching?)

This new interrupt handler is applied with interrupt-mask NOT
/timer-ok and allows timer interrupts only after clearing the after-gc
bit.  A substitute mechanism prevents "us from getting into a loop
just running the daemons."

8 years agoAdd clock time (HH:MM) to GC notifications.
Matt Birkholz [Wed, 9 Dec 2015 22:53:45 +0000 (15:53 -0700)]
Add clock time (HH:MM) to GC notifications.

This makes it easier to see if a long running program is GCing more than
infrequently.

8 years agoedwin: Add a timeout parameter to the peek-no-hang input operations.
Matt Birkholz [Tue, 15 Dec 2015 04:49:47 +0000 (21:49 -0700)]
edwin: Add a timeout parameter to the peek-no-hang input operations.

Factor the busy loop out and name it keyboard-peek-busy-no-hang.  Use
it in the peek-no-hang input operations to implement the timeout.

8 years agoAdd register-gc-event, deregister-gc-event, registered-gc-event.
Matt Birkholz [Tue, 18 Aug 2015 00:19:15 +0000 (17:19 -0700)]
Add register-gc-event, deregister-gc-event, registered-gc-event.

Punt the hook/record-statistic! fluid.  With-gc-notification now uses
dynamic-wind to register and deregister a GC thread event for the
current thread.

Do not use ANY fluid state (e.g. nearest-cmdl/port) during a GC.  Use
the console-i/o-port in hook/gc-start and hook/gc-finish.  GCs can
happen in the thread system when there is no current thread.

The fluid state IS defined during the GC thread events.  At the start
of such events, signal a REPL abort if the heap is low.

8 years agoReplace subprocess status ticks with thread events.
Matt Birkholz [Tue, 21 Jul 2015 01:11:42 +0000 (18:11 -0700)]
Replace subprocess status ticks with thread events.

Without without-interrupts, ticks do not work.  It is possible to
block even though a subprocess has changed state between the last
observation of the global status tick and the suspend.  Passing the
observed tick to suspend-current-thread would allow it to check for
new ticks in the atomic section wherein it decides if the thread
should suspend, but replacing without-interrupts with with-thread-
events-blocked suggests a cleaner solution: subprocess thread events.

The new procedures register-subprocess-event and deregister-
subprocess-event are now used by Edwin.  ANY main loop managing
subprocesses AND IO should be using register-subprocess-event along
with with-thread-events-blocked and suspend-current-thread to reliably
block for either in an SMPing world.

Block-on-io-descriptor now uses with-thread-events-blocked instead of
without-interrupts but it does NOT use register-subprocess-event AND
WILL NOT UNBLOCK WHEN A SUBPROCESS CHANGES STATUS.

Unfortunately this breaks Edwin on OS2 and Win32 where it is now
possible for Edwin to block for keyboard input without noticing that a
subprocess has exited.  Edwin's main loop in these worlds needs to be
updated to use a "suspend loop" and register-subprocess-event even
though they do not actually multi-process.

Subprocess-wait now uses a suspend loop like the one in block-on-io-
descriptor rather than blocking for the rest of the thread's timeslice
in the process-wait primitive.  Synchronous subprocess management now
uses this procedure instead of the curious subprocess-wait*, the only
remaining procedure using ticks.

Thus SUBPROCESS-GLOBAL-STATUS-TICK and SUBPROCESS-STATUS-TICK are
eliminated.

8 years agoReimplement permanently-register-io-thread-event for SMPability.
Matt Birkholz [Sat, 27 Jun 2015 22:24:45 +0000 (15:24 -0700)]
Reimplement permanently-register-io-thread-event for SMPability.

Remove permanent tentries (waiting thread entries) from
io-registrations.  Replace them with an event wrapper that loops,
re-registering after the wrapped event finishes.  The loop assumes IO
is being consumed during the event.  If not, it may spin forever.

Remove the notion of registering for the "front" of the queue too.

The X graphics device must take care to de-register its IO event
before closing the display, else the thread system may apply test-
select-registry to a closed descriptor.

8 years agoedwin: Fix inferior threads' wait-for-input.
Matt Birkholz [Wed, 9 Dec 2015 21:27:57 +0000 (14:27 -0700)]
edwin: Fix inferior threads' wait-for-input.

Set the run-light BEFORE setting inferior-thread-changes?.  Edwin may
accept-thread-output and clear the flag before it handles the thread
event (which will set the run-light, but not -changes?).

8 years agoDo NOT use permanently-register-io-thread-event in Edwin.
Matt Birkholz [Sun, 5 Jul 2015 16:21:17 +0000 (09:21 -0700)]
Do NOT use permanently-register-io-thread-event in Edwin.

Edwin does not consume the IO in the thread event.  This worked in a
uni-processing world where another thread could consume the IO in
round-robin fashion, but in an SMPing world there is no way to know
when it is appropriate to signal another event.  In a naive
implementation (without special handling of these events), an idle
processor would spin, queuing MANY "IO ready" events to one thread
until another thread consumed the IO.

Edwin's X11 and console display types now block for IO on multiple
descriptors, the X or tty descriptor PLUS the subprocess output
descriptors.  They no longer use permanent IO thread events to handle
the latter.

Edwin's remaining uses of permanently-register-io-thread-event are in
single-threaded OS2 and Win32 worlds.  The runtime's only uses are in
the OS2 and X11 graphics devices where the IO *is* consumed during the
event.

8 years agodoc/user-manual: Unix Installation: minor edits.
Matt Birkholz [Thu, 26 Nov 2015 05:38:20 +0000 (22:38 -0700)]
doc/user-manual: Unix Installation: minor edits.

Fix gdbm plugin instructions; there is no configure script in src/gdbm/.

8 years agosvm: finish-cross-compilation of everything using a large heap.
Matt Birkholz [Thu, 26 Nov 2015 05:37:00 +0000 (22:37 -0700)]
svm: finish-cross-compilation of everything using a large heap.

8 years agoUpdate versions to 9.2.1.
Matt Birkholz [Thu, 26 Nov 2015 05:33:35 +0000 (22:33 -0700)]
Update versions to 9.2.1.

9 years agoDon't let mime decoding errors crash imail.
Taylor R Campbell [Sun, 27 Dec 2015 00:01:53 +0000 (00:01 +0000)]
Don't let mime decoding errors crash imail.

9 years agoAutomate the mime codec tests. Still need work.
Taylor R Campbell [Sun, 27 Dec 2015 00:00:29 +0000 (00:00 +0000)]
Automate the mime codec tests.  Still need work.

9 years agoMake all mime decoders signal a common condition type.
Taylor R Campbell [Sat, 26 Dec 2015 23:57:51 +0000 (23:57 +0000)]
Make all mime decoders signal a common condition type.

9 years agoDocument REFERENCE-BARRIER.
Taylor R Campbell [Tue, 27 Oct 2015 13:51:59 +0000 (13:51 +0000)]
Document REFERENCE-BARRIER.

9 years agoffi: Fix callouts that return a struct or union.
Matt Birkholz [Thu, 3 Sep 2015 20:17:46 +0000 (13:17 -0700)]
ffi: Fix callouts that return a struct or union.

I missed a hunk while porting Peter Feigl <craven@gmx.net>'s patch to
commit cf1e855.

9 years agoUse without-interruption and more locking(!) in gcfinal.scm.
Matt Birkholz [Wed, 19 Aug 2015 01:00:50 +0000 (18:00 -0700)]
Use without-interruption and more locking(!) in gcfinal.scm.

Prepare the GC daemon to run concurrently with other threads; lock each
finalizer while it is cleaned in run-gc-finalizers.

Add without-interruption to add-to-, remove-from-, remove-all-from-,
with--lock, and make-gc-finalized-object, NOT to search- or -elements.
Reset-gc-finalizers also lost its without-interrupts, but it is an
after-restore event already executed without-interrupts.

9 years agoRemove without-interrupts from runtime/process.scm.
Matt Birkholz [Tue, 23 Jun 2015 18:01:26 +0000 (11:01 -0700)]
Remove without-interrupts from runtime/process.scm.

Serial access to a subprocess is the responsibility of the user.  Thus
subprocess-i/o-port and close-subprocess-i/o do not need without-
interrupts to implement it.

Closing a port twice should not signal an error, so subprocess-delete
and close-subprocess-i/o do not need even without-interruption.
However they should close the port before clearing the subprocess
slot, else an abort could drop the port and it's channels may not be
closed for an arbitrarily long time.

Status sync could miss changes and subprocess-i/o-port and
make-subprocess could drop a subprocess or port if aborted mid-stride.
They now use without-interruption.

9 years agoRemove without-interrupts from runtime/os2graph.scm.
Matt Birkholz [Fri, 10 Jul 2015 19:03:02 +0000 (12:03 -0700)]
Remove without-interrupts from runtime/os2graph.scm.

9 years agoRemove without-interrupts from runtime/x11graph.scm.
Matt Birkholz [Fri, 19 Jun 2015 20:22:48 +0000 (13:22 -0700)]
Remove without-interrupts from runtime/x11graph.scm.

Replaced it with without-interruption.  Presumably the desire was to
keep the permanently registered IO thread event from interrupting
itself.

9 years agoRemove without-interrupts from runtime/random.scm.
Matt Birkholz [Fri, 19 Jun 2015 17:51:15 +0000 (10:51 -0700)]
Remove without-interrupts from runtime/random.scm.

Use a mutex to serialize access to the default random state.  Serial
access to other random states is still the responsibility of the user.

9 years agoRemove without-interrupts from runtime/queue.scm.
Matt Birkholz [Fri, 19 Jun 2015 20:04:04 +0000 (13:04 -0700)]
Remove without-interrupts from runtime/queue.scm.

Add make-serial-queue and use it in runtime globals: the event
distributors, GC daemons and REPLs.  Note that the "safe" queue
operations, when applied to non-serializing queues in SMPing worlds,
are NOT thread-safe.  This only happens in LIAR, SWAT, Edwin, X11
Graphics and OS2 Graphics -- single-threaded applications.

9 years agoSerialize access to the population-of-1d-tables.
Matt Birkholz [Wed, 1 Jul 2015 14:34:59 +0000 (07:34 -0700)]
Serialize access to the population-of-1d-tables.

Allow create-thread to be run by multiple threads concurrently while
still accessing the population-of-1d-tables serially.

9 years agoRemove without-interrupts from runtime/intrpt.scm.
Matt Birkholz [Sun, 12 Jul 2015 23:47:14 +0000 (16:47 -0700)]
Remove without-interrupts from runtime/intrpt.scm.

It was only used in the internal install procedure where an "atomic"
updated was described.  Punted that and assumed the procedure is not
run in multiple threads concurrently.  It should be called only during
the single-threaded cold load or in a careful developer's REPL(?).

9 years agoRemove without-interrupts from runtime/io.scm.
Matt Birkholz [Mon, 13 Jul 2015 22:57:03 +0000 (15:57 -0700)]
Remove without-interrupts from runtime/io.scm.

Channel-read and channel-write used without-interrupts for atomicity,
to avoid calling primitives with a channel another thread has closed.
The resulting errors may have been expensive to handle, but the cheap
technique of calling without-interrupts is ineffective in SMPing
worlds.  Assuming most channels are used by one thread and will not
encounter these errors, just punt the calls to without-interrupts.

Serialize modifications to the channel table (esp. channel-close) via
the open-channels gc finalizer's atomic section and the new
with-gc-finalizer-lock procedure.

Remove tty-input-channel and tty-output-channel from general use.
They are only used in a cold load initialize-package! procedure and an
after-restore reset-console procedure.  They are not fit for general
use, creating a new channel object each time they are called, only the
newest one of which is returned by descriptor->channel.  Assume these
procedures are only used in single threaded fashion.

In open-pty-master, directory-channel-open and make-select-registry,
replace without-interrupts with without-interruption to avoid dropping
a channel or registry because of an inopportune abort.  GC finalizers
like open-channels and open-directories (and select-registry-
finalizer) are already serializing.

Do NOT export channel-descriptor-for-select to the () package.  Assume
select registries and their result vectors are used ONLY internally,
in single threaded fashion, by the thread system.  Punt the
unnecessary and now useless calls to without-interrupts.

In dld-load-file and dld-unload-file, serialize access to the
dld-handles via dld-handles-mutex.

9 years agoRemove without-interrupts from runtime/infutl.scm.
Matt Birkholz [Tue, 23 Jun 2015 23:01:51 +0000 (16:01 -0700)]
Remove without-interrupts from runtime/infutl.scm.

Without-interrupts was used to make atomic accesses to the
uncompressed-files cache and the wrappers-with-memoized-debugging-info
population.  To replace it, a serial population is used and the
uncompressed-files cache is punted.  The latter is hopefully
unnecessary on modern machinery.

9 years agoRemove without-interrupts from runtime/hashtb.scm.
Matt Birkholz [Thu, 18 Jun 2015 19:23:48 +0000 (12:23 -0700)]
Remove without-interrupts from runtime/hashtb.scm.

Serial access to particular hash tables is (now?) the responsibility
of the user -- all access, not just modifications (because of lazy
rehashing).  Serial access to the list of all address hash tables is
now the responsiblity of a serial population.

Most calls to with-table-locked! (aka without-interrupts) are now
calls to without-interruption (to postpone inopportune aborts).

9 years agoRemove with-absolutely-no-interrupts from runtime/hash.scm.
Matt Birkholz [Thu, 18 Jun 2015 19:56:42 +0000 (12:56 -0700)]
Remove with-absolutely-no-interrupts from runtime/hash.scm.

Use a thread mutex to serialize access.  Simplify an ancient
implementation by using the new datum weak and key weak hash table
types. Initialize the package AFTER (runtime hash-table).

9 years agoRemove without-interrupts from runtime/global.scm.
Matt Birkholz [Mon, 13 Jul 2015 00:23:52 +0000 (17:23 -0700)]
Remove without-interrupts from runtime/global.scm.

Clean-obarray runs as a secondary-gc-deamon and thus, in SMPing
worlds, it may run in parallel with other threads on other processors.

A number of primitives and compiler utilities modify the obarray so an
SMPing microcode will use a pthread mutex to serialize access to it.
Clean-obarray now uses a new procedure, with-obarray-lock, that uses
new primitives to participate in the serialization.

9 years agoRemove without-interrupts from runtime/generic.scm.
Matt Birkholz [Fri, 19 Jun 2015 17:31:37 +0000 (10:31 -0700)]
Remove without-interrupts from runtime/generic.scm.

Serial access to particular generic functions is still the
responsibility of the user.  Serial access to the
generic-procedure-records table is now ensured by a thread mutex.

9 years agoRemove without-interrupts from runtime/geneqht.scm.
Matt Birkholz [Thu, 18 Jun 2015 18:24:43 +0000 (11:24 -0700)]
Remove without-interrupts from runtime/geneqht.scm.

Serial access to a particular table is still the responsibility of the
user (e.g. SOS procedures?), but the list of all address hash tables
is now a serial population.

9 years agoAdd make-serial-population.
Matt Birkholz [Thu, 18 Jun 2015 18:22:42 +0000 (11:22 -0700)]
Add make-serial-population.

Also add empty-population! and for-each-inhabitant.

Do not export the /unsafe procedures even to (runtime); require that
they be explicitly imported (specifically exported?).  Use the /unsafe
procedures in (runtime 1d-property) and (runtime thread) package
initializations to avoid trying to lock the population-of-populations
too early in the cold load.

9 years agoRemove without-interrupts from runtime/gcfinal.scm.
Matt Birkholz [Mon, 13 Jul 2015 22:54:49 +0000 (15:54 -0700)]
Remove without-interrupts from runtime/gcfinal.scm.

Serialize access to the list of gc finalizers and to each finalizer.

9 years agoInitialize the thread system early in the cold load.
Matt Birkholz [Mon, 6 Jul 2015 00:58:03 +0000 (17:58 -0700)]
Initialize the thread system early in the cold load.

Thus with-thread-mutex-lock can be used during initialization of most
packages.  Avoid using the global set-interrupt-enables! binding in
dynamic-wind because it is now called so early.

This anticipates removing without-interrupts from gcfinal.scm and thus
calling with-thread-mutex-lock during make-gc-finalizer, e.g. during
the initialization of the (runtime string) package.

9 years agoRemove with-absolutely-no-interrupts from runtime/gc.scm.
Matt Birkholz [Tue, 23 Jun 2015 18:42:13 +0000 (11:42 -0700)]
Remove with-absolutely-no-interrupts from runtime/gc.scm.

Default/purify and default/gc-flip modified the constant-space-queue
under the cover of with-absolutely-no-interrupts, which is no longer
atomic.  Serializing these procedures is a trick because the latter is
invoked by the GC interrupt.  (Thus ABSOLUTELY no interrupts were
allowed?)

But there is no need for default/gc-flip to remove items from the
queue.  Flush-purification-queue! will know that its queue is "empty"
when its head is in constant space.  Thus the interrupt no longer
modifies the queue, and the queuing process is serialized in the usual
way.

Since primitive-purify cannot fail for lack of space, ancient error
signals and retry loops are also eliminated.

9 years agoDefine make-thread-mutex early.
Matt Birkholz [Wed, 17 Jun 2015 03:03:56 +0000 (20:03 -0700)]
Define make-thread-mutex early.

Global data structures like event-distributors and gc-daemon queues
need to serialize operations and could use thread mutexes except that
they are naturally created early in the cold load, before the thread
system is loaded.  So the mutex data structure is defined (withOUT
define-structure syntax) in a new file: runtime/thread-low.scm.  The
rest of thread.scm must be loaded after record.scm.

This breaks the circularity where thread system initialization
requires population and 1d-table operations which are serialized by
the thread system.

9 years agoRemove without-interrupts from runtime/sfile.scm.
Matt Birkholz [Wed, 17 Jun 2015 02:35:31 +0000 (19:35 -0700)]
Remove without-interrupts from runtime/sfile.scm.

Serialize access to the files-to-delete element of the fixed-objects
vector.

9 years agoRemove without-interrupts from runtime/rgxcmp.scm.
Matt Birkholz [Wed, 17 Jun 2015 02:34:03 +0000 (19:34 -0700)]
Remove without-interrupts from runtime/rgxcmp.scm.

Add a mutex to each of the memoization caches.

9 years agoRemove without-interrupts from runtime/ffi.scm.
Matt Birkholz [Tue, 14 Jul 2015 01:35:18 +0000 (18:35 -0700)]
Remove without-interrupts from runtime/ffi.scm.

Modifications to the registered-callbacks vector and the malloced
aliens list are now serialized by mutexes.  Call-alien now uses
without-preemption during a callout (and its callbacks).

9 years agoAdd without-preemption.
Matt Birkholz [Fri, 10 Jul 2015 02:30:06 +0000 (19:30 -0700)]
Add without-preemption.

9 years agoRemove without-interrupts from runtime/string.scm.
Matt Birkholz [Wed, 17 Jun 2015 02:21:46 +0000 (19:21 -0700)]
Remove without-interrupts from runtime/string.scm.

It was only used to postpone aborts that would drop an external string
descriptor.  The interrupt mask manipulation in %string-head! only
postpones a GC flip while the local heap is edited.

9 years agoRemove without-interrupts from runtime/rbtree.scm.
Matt Birkholz [Wed, 17 Jun 2015 02:21:19 +0000 (19:21 -0700)]
Remove without-interrupts from runtime/rbtree.scm.

It was only used to postpone aborts that would leave data structures
inconsistent.

9 years agoUnalias with-absolutely-no-interrupts in runtime/prgcop.scm.
Matt Birkholz [Wed, 17 Jun 2015 02:20:31 +0000 (19:20 -0700)]
Unalias with-absolutely-no-interrupts in runtime/prgcop.scm.

It is not atomic in multiprocessing worlds.  The alias "atomically" is
no longer appropriate.

9 years agoRemove without-interrupts from runtime/parser-buffer.scm.
Matt Birkholz [Wed, 17 Jun 2015 02:18:21 +0000 (19:18 -0700)]
Remove without-interrupts from runtime/parser-buffer.scm.

It was only used to postpone aborts that would leave data structures
inconsistent.

9 years agoRemove without-interrupts from runtime/gencache.scm.
Matt Birkholz [Wed, 17 Jun 2015 02:16:21 +0000 (19:16 -0700)]
Remove without-interrupts from runtime/gencache.scm.

It was only used to postpone aborts that would leave data structures
inconsistent.  Access to these caches needs to be serial.

9 years agoRemove without-interrupts from runtime/gdbm.scm.
Matt Birkholz [Wed, 17 Jun 2015 02:15:57 +0000 (19:15 -0700)]
Remove without-interrupts from runtime/gdbm.scm.

It was only used to postpone aborts that would leak gdbfs.

9 years agoRemove without-interrupts from runtime/crypto.scm.
Matt Birkholz [Wed, 17 Jun 2015 02:15:05 +0000 (19:15 -0700)]
Remove without-interrupts from runtime/crypto.scm.

It was only used to postpone aborts that would leak mhash contexts.

9 years agoRemove without-interrupts from runtime/condvar.scm.
Matt Birkholz [Wed, 17 Jun 2015 02:13:46 +0000 (19:13 -0700)]
Remove without-interrupts from runtime/condvar.scm.

Multi-threaded access to the chain of waiters is already adequately
serialized by the condition-variable.lock.  Without-interrupts was
only intended to postpone aborts that would leave a doubly-linked
chain without a complete pair of links.

9 years agoAdd without-interruption, to replace without-interrupts.
Matt Birkholz [Sun, 12 Jul 2015 22:18:25 +0000 (15:18 -0700)]
Add without-interruption, to replace without-interrupts.

Without-interruption will replace without-interrupts wherever
exclusivity is not thought to be needed -- just uninterruptibility.

Without-interrupts is deprecated because it is broken in multi-
processing worlds where it cannot provide exclusive access to the heap
as it does in uniprocessing worlds.

9 years agomhash: Prepare the GC daemon to run concurrently with other threads.
Matt Birkholz [Sun, 12 Jul 2015 22:10:53 +0000 (15:10 -0700)]
mhash: Prepare the GC daemon to run concurrently with other threads.

9 years agogdbm: Prepare the GC daemon to run concurrently with other threads.
Matt Birkholz [Thu, 23 Jul 2015 16:21:01 +0000 (09:21 -0700)]
gdbm: Prepare the GC daemon to run concurrently with other threads.

9 years agoAdd with-thread-mutex-try-lock.
Matt Birkholz [Sun, 12 Jul 2015 22:42:00 +0000 (15:42 -0700)]
Add with-thread-mutex-try-lock.

9 years agoLook for IO in yield-current-thread.
Matt Birkholz [Sat, 11 Jul 2015 00:26:23 +0000 (17:26 -0700)]
Look for IO in yield-current-thread.

9 years agoAdd type-checking to thread-dead?.
Matt Birkholz [Sat, 11 Jul 2015 19:32:52 +0000 (12:32 -0700)]
Add type-checking to thread-dead?.

9 years agodebug.c (print_string): Summarize long strings.
Matt Birkholz [Wed, 17 Jun 2015 01:56:30 +0000 (18:56 -0700)]
debug.c (print_string): Summarize long strings.

9 years agoMark with-thread-events-blocked stack frames with the symbol.
Matt Birkholz [Sat, 6 Jun 2015 00:51:33 +0000 (17:51 -0700)]
Mark with-thread-events-blocked stack frames with the symbol.

These frames can then be recognized in Debug_Stack_Trace output.

9 years agoPunt unused variable slots and mention of dangerous bindings.
Matt Birkholz [Wed, 1 Jul 2015 15:03:48 +0000 (08:03 -0700)]
Punt unused variable slots and mention of dangerous bindings.

9 years agoCorrect typos in src/wabbit/README.
Matt Birkholz [Sun, 12 Jul 2015 22:03:54 +0000 (15:03 -0700)]
Correct typos in src/wabbit/README.

9 years agosvm: typo
Matt Birkholz [Tue, 23 Jun 2015 21:41:02 +0000 (14:41 -0700)]
svm: typo

9 years agodoc: The User Manual is for version 9.2.
Matt Birkholz [Wed, 1 Jul 2015 14:57:54 +0000 (07:57 -0700)]
doc: The User Manual is for version 9.2.

9 years agodoc: In the microcode the "context" is called "dynamic-state".
Matt Birkholz [Sun, 12 Jul 2015 21:52:32 +0000 (14:52 -0700)]
doc: In the microcode the "context" is called "dynamic-state".

And unparenthesize a sentence.

9 years agodoc/index.html: Factor out redundant words.
Matt Birkholz [Wed, 1 Jul 2015 14:54:06 +0000 (07:54 -0700)]
doc/index.html: Factor out redundant words.

9 years agodoc: Punt old and redundant discussion of constant space.
Matt Birkholz [Wed, 1 Jul 2015 14:53:08 +0000 (07:53 -0700)]
doc: Punt old and redundant discussion of constant space.

9 years agoAdd various math/float functions whose absence was getting in my way.
Taylor R Campbell [Mon, 3 Aug 2015 02:53:25 +0000 (02:53 +0000)]
Add various math/float functions whose absence was getting in my way.

New functions:

- flo:copysign          copy sign from one value to another
- flo:nextafter         next representable floating-point number
- flo:sinh              hyperbolic trig
- flo:cosh
- flo:tanh
- flo:asinh             hyperbolic inverse trig
- flo:acosh
- flo:atanh
- flo:cbrt              cube root
- flo:erf               error function: 2/sqrt(pi) \int_0^x e^{-t^2} dt
- flo:erfc              complement: 1 - erf(x)
- flo:gamma             Gamma function: \int_0^\infty t^{x-1} e^{-t} dt
- flo:hypot             Euclidean distance: sqrt(x^2 + y^2)
- flo:j0                Bessel function of first kind, order 0
- flo:j1                "      "        "  "     "     "     1
- flo:jn                "      "        "  "     "     "     n
- flo:y0                Bessel function of second kind, order 0
- flo:y1                "      "        "  "      "     "     1
- flo:yn                "      "        "  "      "     "     n

These are all in C99 and POSIX.  For beta, incomplete Gamma, and
other such common critters, we'll have to do it ourselves.

XXX Need automatic tests.

9 years agoMark microcode/scheme as phony so we always descend into microcode.
Taylor R Campbell [Fri, 10 Jul 2015 17:46:53 +0000 (17:46 +0000)]
Mark microcode/scheme as phony so we always descend into microcode.

9 years agoFix comment. Note it has been fixed in glibc as of 2014-04.
Taylor R Campbell [Fri, 10 Jul 2015 17:40:11 +0000 (17:40 +0000)]
Fix comment.  Note it has been fixed in glibc as of 2014-04.

9 years agoFix botched ()/#F split in continuation parser.
Taylor R Campbell [Fri, 10 Jul 2015 17:25:30 +0000 (17:25 +0000)]
Fix botched ()/#F split in continuation parser.

No more `The object (), passed as an argument to stream-car, is not a
pair.' when trying to debug SIGFPE!

9 years agoPrint one of several messages on normal exit.
Joe Marshall [Wed, 8 Jul 2015 18:35:10 +0000 (11:35 -0700)]
Print one of several messages on normal exit.

9 years agoUse correct time offset for file age test.
Taylor R Campbell [Wed, 8 Jul 2015 04:41:31 +0000 (04:41 +0000)]
Use correct time offset for file age test.

9 years agoAdd procedure CUBE.
Joe Marshall [Mon, 6 Jul 2015 20:33:02 +0000 (13:33 -0700)]
Add procedure CUBE.

9 years agoAdd CONS-STREAM* and CIRCULAR-STREAM macros.
Joe Marshall [Mon, 6 Jul 2015 20:01:55 +0000 (13:01 -0700)]
Add CONS-STREAM* and CIRCULAR-STREAM macros.

9 years agoMerge with head.
Joe Marshall [Mon, 6 Jul 2015 16:54:33 +0000 (09:54 -0700)]
Merge with head.

9 years agoFancy unparsing of streams.
Joe Marshall [Mon, 6 Jul 2015 16:52:28 +0000 (09:52 -0700)]
Fancy unparsing of streams.