Chris Hanson [Sat, 6 Jan 2018 02:58:26 +0000 (21:58 -0500)]
Rewrite the bundle machinery to separate interface and predicate.
Change define-bundle-interface to require its definition names to be
spelled out in the definition rather than being constructed by the macro; the
result is much like define-record-type.
Change the bundle lookup to use a binary search rather than a linear search,
which will help when using large bundles. Although we might want to have a more
flexible search strategy since it's not exposed to the end user.
Add support for pretty-printing bundles similarly to records.
Matt Birkholz [Sat, 23 Dec 2017 09:52:49 +0000 (02:52 -0700)]
ffi: Peek C strings as non-legacy strings, else bytevectors.
When the FFI peeks at a C string (ASCII and null terminated) it now
copies the characters into a ustring (rather than a deprecated legacy
string). If the C string contains non-ASCII characters, the FFI
returns a bytevector, passing the decoding problem on to higher
levels, and avoiding an extra copy (from bytes to string) when no
translation is needed.
Add c-peek-csubstring, a version of c-peek-cstring that takes a byte
count and does NOT require the C string to be null terminated.
Add common integer bit string ffs, fls, ctz, and clz.
(ffs x): find first set, 1-indexed with 0 for 0
(fls x): find last set, 1-indexed with 0 for 0 (same as integer-length)
(ctz x): count trailing zeros (same as ffs)
((clz n) x): count leading zeros in n-bit word x
Matt Birkholz [Sat, 16 Sep 2017 22:06:17 +0000 (15:06 -0700)]
runtime/syncproc: Eliminate spinning, and blocking.
The run-shell-command spins when it is copying both stdin and stdout.
E.g.
(call-with-input-string "Lorem ipsum dolor sit amet\n"
(lambda (in)
(run-shell-command "sleep 10; cat" 'input in)))
will keep your machine busy for 10 seconds.
When it is not spinning, the procedure blocks for large bufferfuls.
During the evaluation of
(run-shell-command
"i=0; while [ $i -lt 5 ]; do echo $i; i=$[$i + 1]; sleep 1; done"
'redisplay-hook flush-output-port)
you will not see 5 lines of output, one each second, but all 5 lines
at once after 5 seconds, despite the redisplay hook [Linux 4.10.0
glibc 2.24].
This new copying process eliminates the blocking AND the spinning. It
keeps stdout in nonblocking mode and uses suspend-current-thread to
block. It handles short writes too. The ports sourcing/sinking
stdin/stdout are required to block.
Print is just the renamed Debug_Print, renamed for brevity in debugger
commands. Rename do_printing to print_object and punt the detailed_p
parameter, and the gotos, and handled_p. Move the bulky compiled
entry handling to a separate function: print_compiled_entry. Punt
checking for a "closed" stack frame in verify_stack().
Matt Birkholz [Sat, 16 Sep 2017 21:38:27 +0000 (14:38 -0700)]
microcode: Do not save history_register locally.
The required change to C_call_scheme is described but not implemented.
C_call_scheme has other problems(?). Preferring a rotated history to
a broken history (broken by a GC during a callback) for now.
Matt Birkholz [Sat, 16 Sep 2017 22:19:27 +0000 (15:19 -0700)]
ffi: Follow example of C_call_scheme; eliminate aborts.
Keep callouts simple, fast. Make callbacks save/restore machine state
(last_return_code, mainly) and use RC_END_OF_COMPUTATION instead of a
special primitive (return-to-c), like C_call_scheme. Punt the
pop_return_p parameter of Interpret; instead, leave #f in EXP and
Re_Enter_Interpreter, also like C_call_scheme. Add re_enter_scheme to
pop machine state pushed by abort_to_c (used when state cannot be
saved locally, as in the glib plugin's run_glib).
Matt Birkholz [Sun, 30 Jul 2017 22:39:21 +0000 (15:39 -0700)]
runtime/binary-port (close-binary-output-port): Close output chan.
Close-binary-output-port was not closing the output channel of a
binary IO port when input and output channels were not the same
(e.g. when the port is the IO of a subprocess). Close-binary-input-
port seemed to have the same thinko.
Matt Birkholz [Tue, 23 May 2017 23:44:55 +0000 (16:44 -0700)]
x11 plugin: Convert to iso8859-1 rather than utf8.
And avoid converting if the string is already ASCII. Also fix the
subsystem version number, and update README, NEWS, etc. following the
examples of the other plugins.
Matt Birkholz [Wed, 17 May 2017 22:37:59 +0000 (15:37 -0700)]
Add add-plugin and remove-plugin; maintain an Info index.
The postrm Debian installation scripts do not work if they are run
after the core package is removed. And prerm scripts do not work if
they update indexes based on what is installed. (The package being
removed is still installed.) Replace update-html-index and update-
optiondb-index with add-plugin and remove-plugin, procedures that
add/remove names to/from a list. These work in prerm scripts.