- Interrupt handlers really installed and documented.
- File locking fixed to use proc objects instead of pids, and bugs in code and documentation fixed.
This commit is contained in:
shivers
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9
NEWS
9
NEWS
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@ -2,6 +2,15 @@
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Recent changes to the Scheme Shell.
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??/??/?? (version 0.4.5 presumably)
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lock-region record now stores the *proc object* of the locking
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process, not the integer pid. A bug in unlock-region was fixed,
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and the documentation was fixed up.
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Did we say we had signal handlers installed in the last release?
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Now we do. Really. Installed & documented.
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Hopefully, bdc will change this line to say the static heap
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linker is documented.
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11/03/96 (version 0.4.4)
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minor fixes for SunOS, Solaris, AIX, NeXTStep, 686 systems
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minor static heap linker fixes
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9
RELEASE
9
RELEASE
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@ -137,14 +137,14 @@ We even have one of those URL things:
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=====================
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** Signal handlers
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We finally have signal handlers; with this Scsh now has all of Posix.
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We finally have signal handlers. Go wild.
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** Static heap linker
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The static heap linker converts a Scheme 48 bytecode image as
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embodied in a .image file to a C representation. This C
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code is then compiled and linked in with a virtual machine. One
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pleasant side effect of this is reduced startup times. Another
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good thing is that immutable parts of the image can be shared
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pleasant side effect of this is reduced startup times and heap sizes.
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Another good thing is that immutable parts of the image can be shared
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between processes. see the script scsh/static.scm
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** Last few bits of Posix
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@ -166,7 +166,8 @@ We even have one of those URL things:
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switch and with the (DUMP-SCSH-PROGRAM <file-name> <entry-point>)
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are now equivalent in that both pass a list of command-line arguments
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that includes the program name. The two start-up methods were not
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the same in the previous release.
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the same in the previous release. NOTE: THIS IS A BACKWARDS-INCOMPATIBLE
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CHANGE IN DUMP-SCSH-PROGRAM FROM THE PREVIOUS RELEASE.
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** Etc.
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Solaris 2 on i386 support, AIX 4 support, HP-UX now uses dld for
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@ -1,11 +1,13 @@
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Scsh cheat sheet
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Olin Shivers
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November 1994
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November 1996
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This cheat sheet is intentionally kept brief and minimalist.
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It is intended to function as an ASCII-format reminder for the
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full manual, not as the definition. It can be read using GNU Emacs's
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outline mode.
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It is also not entirely up-to-date. I'd appreciate getting updates from users.
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-------------------------------------------------------------------------------
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* High-level forms
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@ -174,6 +176,27 @@ Open flags:
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(write-string/partial string [fd/port start end]) -> nwritten
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(force-output [fd/port])
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** File locking
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(define-record lock-region
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exclusive? ; write or read lock?
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start ; integer: start, end & whence
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end ; integer: define the region being locked.
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whence ; The value of SEEK/SET, SEEK/DELTA, or SEEK/END.
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proc) ; A proc object for the process locking the region.
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(make-lock-region exclusive? start len [whence]) -> lock-region
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WHENCE defaults to the value of SEEK/SET.
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(lock-region fdes lock)
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(lock-region/no-block fdes lock)
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(get-lock-region fdes lock) -> lock-region or #f
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(unlock-region fdes lock)
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(with-region-lock* fdes lock thunk)
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(with-region-lock fdes lock body ...) Syntax
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** File system
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(create-directory fname [perms override?])
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(create-fifo fname [perms override?])
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@ -364,6 +387,67 @@ command-line-arguments
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(pause-until-interrupt)
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(sleep secs)
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Non-signal S48 interrupts
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-------------------------
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interrupt/memory-shortage
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Posix signals with S48 interrupts
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------------------------------
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signal/alrm interrupt/alrm (aka interrupt/alarm)
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signal/int interrupt/int (aka interrupt/int)
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signal/chld interrupt/chld
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signal/cont interrupt/cont
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signal/hup interrupt/hup
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signal/quit interrupt/quit
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signal/term interrupt/term
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signal/tstp interrupt/tstp
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signal/usr1 interrupt/usr1
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signal/usr2 interrupt/usr2
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signal/info interrupt/info Non-Posix
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signal/io interrupt/io Non-Posix
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signal/poll interrupt/poll Non-Posix
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signal/prof interrupt/prof Non-Posix
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signal/pwr interrupt/pwr Non-Posix
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signal/urg interrupt/urg Non-Posix
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signal/vtalrm interrupt/vtalrm Non-Posix
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signal/winch interrupt/winch Non-Posix
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signal/xcpu interrupt/xcpu Non-Posix
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signal/xfsz interrupt/xfsz Non-Posix
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Synchronous and uncatchable signals
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-----------------------------------
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signal/stop Uncatchable Posix
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signal/kill Uncatchable Posix
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signal/abrt Synchronous Posix
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signal/fpe Synchronous Posix
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signal/ill Synchronous Posix
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signal/pipe Synchronous Posix
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signal/segv Synchronous Posix
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signal/ttin Synchronous Posix
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signal/ttou Synchronous Posix
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signal/bus Synchronous BSD + SVR4
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signal/emt Synchronous BSD + SVR4
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signal/iot Synchronous BSD + SVR4
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signal/sys Synchronous BSD + SVR4
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signal/trap Synchronous BSD + SVR4
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** Interrupt handlers
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(signal->interrupt sig) -> interrupt
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(interrupt-set integer1 ...) -> integer
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(enabled-interrupts) -> integer
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(set-enabled-interrupts! integer) -> integer
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(with-enabled-interrupts interrupt-set body ...) Syntax
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(with-enabled-interrupts* interrupt-set thunk)
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(set-interrupt-handler! interrupt handler) -> old-handler
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(interrupt-handler interrupt) -> handler
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HANDLER is #f (ignored), #t (default), or (lambda (enabled-ints) ...) proc.
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** Time
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(define-record date
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@ -162,7 +162,8 @@
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lock-region:whence
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lock-region:start
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lock-region:len
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lock-region:pid
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lock-region:pid ; Deprecated proc.
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lock-region:proc
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make-lock-region
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lock-region
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@ -986,10 +987,36 @@
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(define-interface signal-handler-interface
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(export signal->interrupt
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interrupt-set
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(with-enabled-interrupts :syntax)
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with-enabled-interrupts*
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set-signal-handler!
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signal-handler
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enabled-interrupts
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set-enabled-interrupts!
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set-interrupt-handler!
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interrupt-handler
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%set-unix-signal-handler!
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%unix-signal-handler
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))
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interrupt/alrm interrupt/alarm
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interrupt/int interrupt/keyboard
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interrupt/memory-shortage
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interrupt/chld
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interrupt/cont
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interrupt/hup
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interrupt/quit
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interrupt/term
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interrupt/tstp
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interrupt/usr1
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interrupt/usr2
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interrupt/info
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interrupt/io
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interrupt/poll
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interrupt/prof
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interrupt/pwr
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interrupt/urg
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interrupt/vtalrm
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interrupt/winch
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interrupt/xcpu
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interrupt/xfsz))
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