scsh-process - Egg to add Scheme Shell process notation to CHICKEN Scheme.

Age	Commit message (Collapse)	Author
2017-11-18	Perform trial wait with "nohang" set to #t when blocking	Peter Bex
	We might have missed the one and only SIGCHLD event for the process we're about to wait for, so attempt to reap it before entering the condition variable wait loop. Just in case, we always do this when we're woken up, so that we can't accidentally miss the signal.
2017-11-10	Also unmask (if needed) sigchld in the child process thunk	Peter Bex
	This would be otherwise kept in masked mode because the thunk is in the dynamic extent of the dynamic-wind.
2017-11-10	Don't unmask signal if the signal was already masked before forking	Peter Bex

2017-11-09	Temporarily mask sigchld to avoid race condition in fork	Peter Bex
	We do a fork, and immediately afterwards we insert a scsh-process object into the pending processes table with the pid of the newly created child process. However, sigchld may arrive in between the fork and the insertion of the scsh-process object into the pending process table. The sigchld handler will reap the child process and attempt to update the pending scsh-process object, but it can't find it yet because the insertion of this object into the table happens after the fork, thus losing the reaped child's exit status. Then, if the program waits for the process after that, we enter an infinite busy waiting loop that expects a sigchld to arrive and update the object through the table, but that never happens because the child has already been reaped.
2017-11-08	Fix process-wait on #f or a plain pid	Peter Bex
	Thanks to Jörg F. Wittenberger for the patch and test
2017-06-29	Ensure ports are closed after reading in run/...* procedures (thanks to ↵	Peter Bex
	Jörg F. Wittenberger)
2017-06-03	Reinstall deadlock workaround thread when forking with thread killing	Peter Bex

2017-05-23	Fix race condition that caused mutex to get unlocked when the process wasn't ↵	Peter Bex
	ready yet
2017-05-23	Block only current thread instead of entire process when waiting for a child.	Jörg Wittenberger
	Signed-off-by: Peter Bex <peter@more-magic.net>
2017-01-24	Update copyright year	Peter Bex

2017-01-21	Clear pending process table on fork.	Peter Bex
	Thanks to Joerg Wittenberger
2017-01-21	Also export proc:pid (thanks to Joerg Wittenberger)	Peter Bex

2016-09-24	Add proc:pid, proc?, signal-process and process-sleep for improved compat	Peter Bex
	Thanks to Joerg Wittenberger for the suggestion to add proc:pid and signal-process.
2015-07-18	Fix default output redirections to ignore stderr.	Peter Bex
	This is what scsh does as well, and is more like a regular UNIX shell. Thanks to Haochi Kiang for reporting the bug and providing a patch.
2013-06-22	Bump version to 0.4.1 (and update copyright year, while we're at it)0.4.1	Peter Bex

2013-06-18	Support unquote-splicing through a variant of exec-path (reported by Moritz)	Peter Bex

2012-11-03	Support new process-fork form which can kill all other threads. We still ↵	Peter Bex
	see some problems occurring
2012-10-06	Fix order of returning0.3.1	Peter Bex

2012-10-06	Return #f from WAIT when nohang is given and the process hasn't completed	Peter Bex

2012-10-06	Provide a new 'wait' procedure so we don't need to modify the type of ↵0.3	Peter Bex
	process-wait, which could lead to trouble in user code when compiled with scrutiny and/or specialization. This procedure returns the values in a different order for ease of use. May be a bit confusing...
2012-10-06	Revert back to standard-extension and include a type declaration override ↵	Peter Bex
	for scsh-process to fix bogus optimization of 'signal-handler' due to invalid scrutiny type
2012-10-06	Add back the nohang option to the process-wait override	Peter Bex

2012-10-05	Improve test for <<-redirection by making it less dependent on random ↵	Peter Bex
	factors that determine process interleaving, ensuring it gets processed through the pipeline rather than on the same descriptor by mangling it through 'tr'. Fix <<-redirection by reopening output port on new descriptor and explicitly setting up the input port to the given fd in the parent process
2012-10-04	Reorder return values of process-wait; we shouldn't mess with that!	Peter Bex

2012-10-03	Add bookkeeping code for processes so we can get rid of all zombie processes	Peter Bex

2012-10-03	Clean up tempfiles by open/unlink combination in run/collecting*	Peter Bex

2012-10-02	Ensure port is closed before returning from run/sexp*; this would hopefull ↵	Peter Bex
	ensure processes don't hang when they keep writing while the pipe buffer is full. Instead, it would kill the process with sigpipe
2012-10-02	fork/pipe returns #f in the child, not 0	Peter Bex

2012-10-02	Use implicit quasiquotation inside object-redirection rule too	Peter Bex

2012-10-02	Fix setup script and remove untrue and misleading comment	Peter Bex

2012-10-02	Use better ->string conversion routine	Peter Bex

2012-10-02	Fix run/collecting* and add a testcase for it	Peter Bex

2012-10-02	Implement <<-redirection	Peter Bex

2012-10-01	Implement appending to files	Peter Bex

2012-10-01	Fix run/port* so it doesn't replace the input port when in the REPL. ↵	Peter Bex
	Unfortunately, no test for it
2012-10-01	Implement run/file*, which is really weird	Peter Bex

2012-10-01	Mistake: the fork should automatically exit, the user shouldn't need to do this	Peter Bex

2012-10-01	Implement && and \|\| (which is a bit of a hack in Chicken considering it's ↵	Peter Bex
	the empty symbol)
2012-10-01	Add BSD license clause	Peter Bex

2012-10-01	Clean up FDs that we don't use anymore	Peter Bex

2012-10-01	Fix nested pipe expressions and run/sexps, adding tests for both	Peter Bex

2012-10-01	Provide a more complete set of primitives, and convert fit-pipes to ↵	Peter Bex
	fork/pipe+ chain
2012-10-01	Implement pipe fitting	Peter Bex

2012-09-30	Implement scheme begin forms, filedescriptor dup()ing and use ↵	Peter Bex
	print-error-message to print the error message, then exit
2012-09-30	First stab at basic scsh interface. Currently can fork off subprocesses and ↵	Peter Bex
	run processess synchronously