2024-01-22  Steven Eker  <eker@pup>

	* directoryActions.cc (DirectoryManagerSymbol::getDirectoryEntry):
	use lstat() rather than stat() to handle the DT_UNKNOWN case, just
	in case we are looking at a symbolic link. The comment said that
	we needed to call lstat() but actually we were calling stat().
	Comment rewritten to make the issue clear

===================================Maude156===========================================

2023-11-02  Steven Eker  <eker@pup>

	* configSymbol.cc (ConfigSymbol::ruleRewrite): enforce
	portals for external rewriting

2023-11-01  Steven Eker  <eker@pup>

	* configSymbol.cc (ConfigSymbol::addPortals): fix bug where we
	were using the same name for the data member and argument

2023-10-26  Steven Eker  <eker@pup>

	* configSymbol.cc (ConfigSymbol::addPortals): added
	(ConfigSymbol::ruleRewrite): check for portal symbols

	* configSymbol.hh (class ConfigSymbol): added decl for
	addPortals(); added data member portalSymbols

2023-05-19  Steven Eker  <eker@pup>

	* prngManagerSymbol.hh (class PrngManagerSymbol): updated decls for
	getSeed32(), getSeed64()

	* prngActions.cc (PrngManagerSymbol::getSeed64): uint64_t ->
	uint_fast64_t
	(PrngManagerSymbol::getSeed32): uint32_t -> uint_fast32_t
	(PrngManagerSymbol::setSeed): uint32_t -> uint_fast32_t,
	uint64_t -> uint_fast64_t
	(PrngManagerSymbol::getNext): uint64_t -> uint_fast64_t

===================================Maude150===========================================

2023-05-12  Steven Eker  <eker@pup>

	* prngActions.cc (PrngManagerSymbol::getNext): use makeNatDag64()

2023-05-11  Steven Eker  <eker@pup>

	* prngActions.cc (PrngManagerSymbol::createPrng): return after
	calling errorReply()
	(PrngManagerSymbol::createPrng): rename algorithms to MT32 and MT64
	(PrngManagerSymbol::errorReply): added DebugInfo()
	(PrngManagerSymbol::createPrng): added DebugInfo()s

2023-05-10  Steven Eker  <eker@pup>

	* objectSystem.hh: added class PrngManagerSymbol

	* prngActions.cc: created

	* prngSignature.cc: added deletePrngMsg and deletedPrngMsg

	* prngManagerSymbol.cc: created

2023-05-09  Steven Eker  <eker@pup>

	* prngSignature.cc: created

	* prngManagerSymbol.hh: created

===================================Maude149===========================================

2023-03-29  Steven Eker  <eker@pup>

	* objectSystemRewritingContext.hh (class ObjectSystemRewritingContext):
	use DagNode::LessThan for ObjectMap and MessageMap
	(class ObjectSystemRewritingContext): deleted struct dagNodeLt

2023-03-27  Steven Eker  <eker@pup>

	* directoryOutcomes.cc (DirectoryManagerSymbol::openedDirectoryReply):
	don't use preallocate ctor

	* timeActions.cc (TimeManagerSymbol::createdTimerReply): don't
	use preallocate ctor

	* processOutcomes.cc (ProcessManagerSymbol::exitedReply): don't
	use preallocate ctor

	* processActions.cc (ProcessManagerSymbol::createProcess): don't
	use preallocate ctor

	* fileOutcomes.cc (FileManagerSymbol::openedFileReply): don't use
	preallocate ctor

	* socketOutcomes.cc (SocketManagerSymbol::createdSocketReply)
	(SocketManagerSymbol::acceptedClientReply): don't use preallocate
	ctor

===================================Maude144===========================================

2023-03-10  Steven Eker  <eker@pup>

	* streamManagerSymbol.cc (StreamManagerSymbol::interruptHandler):
	added dummy if statement to keep gcc quiet

2021-06-08  Steven Eker  <eker2@eker10>

	* directoryOutcomes.cc
	(DirectoryManagerSymbol::gotDirectoryEntryReply): fix bug where
	reply was length 3 rather than 4

2021-04-28  Steven Eker  <eker2@eker10>

	* directoryManagerSymbol.hh (class DirectoryManagerSymbol): added
	decl for removeDirectory()

	* directoryManagerSymbol.cc
	(DirectoryManagerSymbol::handleManagerMessage): use
	removeDirectory()

	* directoryActions.cc (DirectoryManagerSymbol::removeDirectory):
	added

	* directoryManagerSymbol.hh (class DirectoryManagerSymbol): added
	decl for makeDirectory()

	* directoryActions.cc (DirectoryManagerSymbol::makeDirectory):
	added

	* directoryManagerSymbol.cc
	(DirectoryManagerSymbol::handleManagerMessage): use makeDirectory()

	* directoryManagerSymbol.hh (class DirectoryManagerSymbol): remove
	dummy cleanUp() implementation

	* directoryActions.cc (DirectoryManagerSymbol::getDirectoryEntry):
	handle other cases
	(DirectoryManagerSymbol::handleSymbolicLink): added
	(DirectoryManagerSymbol::cleanUp): added

	* directoryManagerSymbol.hh (class DirectoryManagerSymbol):
	updated decl for getOpenDirectory()

	* directoryActions.cc (DirectoryManagerSymbol::getOpenDirectory):
	pass back OpenDirectory* rather than DIR*
	(DirectoryManagerSymbol::getDirectoryEntry): use new
	getOpenDirectory() semantics
	(DirectoryManagerSymbol::closeDirectory): use new
	getOpenDirectory() semantics
	(DirectoryManagerSymbol::openDirectory): store path with trailing
	/ so we can get path to whatever we find in directory

	* directoryManagerSymbol.hh (class DirectoryManagerSymbol): added
	struct OpenDirectory; DirectoryMap now maps to OpenDirectory
	rather than DIR*

2021-04-27  Steven Eker  <eker2@eker10>

	* objectSystem.hh: added DirectoryManagerSymbol and
	TimeManagerSymbol

	* directoryManagerSymbol.cc
	(DirectoryManagerSymbol::handleMessage): use getDirectoryEntry()
	and closeDirectory()
	(DirectoryManagerSymbol::handleManagerMessage): use
	openDirectory()

	* directoryManagerSymbol.hh (class DirectoryManagerSymbol): added
	decls for getOpenDirectory(), openDirectory(),
	getDirectoryEntry(), closeDirectory(), errorReply(),
	openedDirectoryReply(), gotDirectoryEntryReply()

	* directoryOutcomes.cc: created

	* directoryActions.cc: created

	* directorySignature.cc: endOfDirectoryEntrySymbol ->
	endOfDirectorySymbol; getDirectoryEntryMsg needs to be a
	FreeSymbol

	* directoryManagerSymbol.cc: created

2021-04-26  Steven Eker  <eker2@eker10>

	* directorySignature.cc: created

	* directoryManagerSymbol.hh: created

2021-04-21  Steven Eker  <eker2@eker10>

	* fileActions.cc (FileManagerSymbol::makeLink): get Bad link name
	and Bad target file name error replies the right way around

2021-04-20  Steven Eker  <eker2@eker10>

	* fileActions.cc (FileManagerSymbol::makeLink): implmented

	* fileSignature.cc: added hardSymbol, symbolicSymbol

	* fileManagerSymbol.hh (class FileManagerSymbol): added decl for
	makeLink()

	* fileActions.cc (FileManagerSymbol::makeLink): added stub

	* fileManagerSymbol.cc (FileManagerSymbol::handleManagerMessage):
	handle makeLinkMsg

	* fileSignature.cc: fix bug where closedFileMsg was specified as
	having 3 arguments; added makeLinkMsg/madeLinkMsg

===================================Maude136===========================================

2021-04-08  Steven Eker  <eker2@eker10>

	* streamManagerSymbol.cc
	(StreamManagerSymbol::nonblockingGetLine): use interrupt Hander
	for SIGINT and SIGTERM in the non-tecla case

	* streamManagerSymbol.hh (class StreamManagerSymbol): added decl
	for interruptHandler()

	* streamManagerSymbol.cc
	(StreamManagerSymbol::nonblockingGetLine): restore default SIGINT
	handling if tecla is not being used
	(StreamManagerSymbol::interruptHandler): added

2021-04-07  Steven Eker  <eker2@eker10>

	* streamManagerSymbol.cc (StreamManagerSymbol::cleanUpManager):
	added
	(StreamManagerSymbol::nonblockingGetLine): call
	requestCleanUpOnDestruction(
	(StreamManagerSymbol::cleanUpManager): replace DebugAlways() with
	DebugInfo()

	* streamManagerSymbol.hh (class StreamManagerSymbol): added decl
	for cleanUpManager()

	* objectSystemRewritingContext.hh
	(ObjectSystemRewritingContext::requestCleanUpOnDestruction): added

	* objectSystemRewritingContext.cc (~ObjectSystemRewritingContext):
	call cleanUpManager() on each ExternalObjectManagerSymbol that has
	requested a clean up callback

	* objectSystemRewritingContext.hh (class
	ObjectSystemRewritingContext): added typedef ManagerSet and data
	member managersNeedingCleanUp

	* externalObjectManagerSymbol.cc
	(ExternalObjectManagerSymbol::cleanUpManager): added

	* externalObjectManagerSymbol.hh (class
	ExternalObjectManagerSymbol): added decl for cleanUpManager()

	* streamManagerSymbol.cc
	(StreamManagerSymbol::handleManagerMessage): added DebugEnter()

	* streamManagerSymbol.hh (class StreamManagerSymbol): updated decl
	for finishUp()
	(class StreamManagerSymbol): deleted data members
	lastGetLineMessage, objectContext, incomingText, childPid, pipeFd

	* streamManagerSymbol.cc
	(StreamManagerSymbol::StreamManagerSymbol): don't init
	objectContext, childPid, pipeFd

	* objectSystemRewritingContext.cc (ObjectSystemRewritingContext):
	changed DebugEntry() to DebugEnter()

	* streamManagerSymbol.hh (class StreamManagerSymbol): deleted decl
	for clearVariables(); added decl for findPendingGetLine()

	* streamManagerSymbol.cc
	(StreamManagerSymbol::nonblockingGetLine): fill out entry in
	pendingGetLines()
	(StreamManagerSymbol::doHungUp): check pendingGetLines rather than
	objectContext
	(StreamManagerSymbol::doHungUp): pass PendingGetLineMap::iterator
	rather than in to finishUp()
	(StreamManagerSymbol::clearVariables): deleted
	(StreamManagerSymbol::doRead): use pendingGetLines; pass
	PendingGetLineMap::iterator to finishUp()
	(StreamManagerSymbol::findPendingGetLine): added
	(StreamManagerSymbol::cancelGetLine): rewritten to use
	pendingGetLines

	* streamManagerSymbol.hh (class StreamManagerSymbol): added struct
	PendingGetLine, typedef PendingGetLineMap and data member
	pendingGetLines

2021-04-06  Steven Eker  <eker2@eker10>

	* objectSystemRewritingContext.cc (ObjectSystemRewritingContext):
	replaced commented out DebugAdvisory() with DebugEntry()

2021-04-05  Steven Eker  <eker2@eker10>

	* timeActions.cc (TimeManagerSymbol::stopTimer): don't produce a
	reply if the timer is already stopped

2021-04-02  Steven Eker  <eker2@eker10>

	* streamManagerSymbol.cc (StreamManagerSymbol::getLine): check
	IO_Manager::safeToAccessStdin() before accessing stdin
	(StreamManagerSymbol::write): check
	IO_Manager::safeToAccessStdout()/IO_Manager::safeToAccessStderr()

2021-03-31  Steven Eker  <eker2@eker10>

	* streamManagerSymbol.cc (StreamManagerSymbol::clearVariables):
	added
	(StreamManagerSymbol::finishUp): use clearVariables()
	(StreamManagerSymbol::cancelGetLine): added
	(StreamManagerSymbol::StreamManagerSymbol): initialize
	objectContext, childPid, pipeFd
	(StreamManagerSymbol::handleManagerMessage): handle
	cancelGetLineMsg

	* streamManagerSymbol.hh (class StreamManagerSymbol): added data
	members childPid and pipeFd

	* streamManagerSymbol.cc
	(StreamManagerSymbol::nonblockingGetLine): use errorReply()
	(StreamManagerSymbol::makeNonblockingPipe): use errorReply()
	(StreamManagerSymbol::getLine): use errorReply()
	(StreamManagerSymbol::write): use use errorReply() (2 places)

	* streamManagerSymbol.hh (class StreamManagerSymbol): added decl
	for errorReply()

	* streamManagerSymbol.cc (StreamManagerSymbol::errorReply): added

	* streamSignature.cc: added cancelGetLineMsg, canceledGetLineMsg,
	streamErrorMsg

2021-03-30  Steven Eker  <eker2@eker10>

	* streamManagerSymbol.cc
	(StreamManagerSymbol::nonblockingGetLine): call
	resetStdoutWrapping()

2021-03-29  Steven Eker  <eker2@eker10>

	* streamManagerSymbol.cc
	(StreamManagerSymbol::nonblockingGetLine): use usingTecla()
	(StreamManagerSymbol::nonblockingGetLine): call setStdinOwner() as
	a static function
	(StreamManagerSymbol::nonblockingGetLine): call setStdinOwner() as
	a static function

2021-03-26  Steven Eker  <eker2@eker10>

	* streamManagerSymbol.cc
	(StreamManagerSymbol::nonblockingGetLine): block SIGINT before
	testing interruptSeen() so we don't miss one

2021-03-24  Steven Eker  <eker2@eker10>

	* streamManagerSymbol.hh (class StreamManagerSymbol): deleted data
	member childPid

	* streamManagerSymbol.cc (StreamManagerSymbol::doRead):
	reorganized nested if statements
	(StreamManagerSymbol::nonblockingGetLine): handle the case that a
	control-C arrives before tecla installs its own handler
	(StreamManagerSymbol::nonblockingGetLine): call setStdinOwner()
	(StreamManagerSymbol::finishUp): use waitUntilSafeToAccessStdin()
	to wait for child to exit
	(StreamManagerSymbol::nonblockingGetLine): use while() loop so we
	don't end up write()ing 0 characters
	(StreamManagerSymbol::nonblockingGetLine): don't record childPid

	* streamManagerSymbol.hh (class StreamManagerSymbol): deleted data
	member readEnd

	* streamManagerSymbol.cc
	(StreamManagerSymbol::nonblockingGetLine): no need to save readEnd

	* streamManagerSymbol.hh (class StreamManagerSymbol): updated decl
	for finishUp()

	* streamManagerSymbol.cc
	(StreamManagerSymbol::nonblockingGetLine): use
	makeNonblockingPipe(); check for fork() failure
	(StreamManagerSymbol::nonblockingGetLine): rearrange the outer
	loop so we don't write() 0 characters
	(StreamManagerSymbol::finishUp): added
	(StreamManagerSymbol::doHungUp): added
	(StreamManagerSymbol::doHungUp, StreamManagerSymbol::doRead): pass
	fd to finishUp
	(StreamManagerSymbol::finishUp): take fd argument

	* streamManagerSymbol.hh (class StreamManagerSymbol): added decl
	for makeNonblockingPipe()

	* streamManagerSymbol.cc
	(ProcessManagerSymbol::makeNonblockingPipe): added

	* processActions.cc (ProcessManagerSymbol::makeCloseOnExitPipe):
	use WRITE_END
	(ProcessManagerSymbol::makeCloseOnExitPipe)
	(ProcessManagerSymbol::makeNonblockingSocketPair): added comments
	about which set of flags is being modified

	* streamManagerSymbol.cc (StreamManagerSymbol::doRead): use
	childPid
	(StreamManagerSymbol::nonblockingGetLine): set up asynchronous
	read of pipe

	* streamManagerSymbol.hh (class StreamManagerSymbol): pid data
	member renamed to childPid

2021-03-23  Steven Eker  <eker2@eker10>

	* streamManagerSymbol.hh (class StreamManagerSymbol): added decl
	for doRead()

	* streamManagerSymbol.cc (StreamManagerSymbol::getLine): use
	nonblockingGetLine()
	(StreamManagerSymbol::doRead): added

	* streamManagerSymbol.hh (class StreamManagerSymbol): added decl
	for nonblockingGetLine()

	* streamManagerSymbol.cc
	(StreamManagerSymbol::nonblockingGetLine): added

	* processActions.cc (ProcessManagerSymbol::makeCloseOnExitPipe):
	use READ_END, WRITE_END
	(ProcessManagerSymbol::createProcess): use READ_END, WRITE_END

	* socketManagerSymbol.hh (class SocketManagerSymbol): delete enum
	Sizes now that we get READ_BUFFER_SIZE from PseudoThread

	* streamManagerSymbol.hh (class StreamManagerSymbol): derive from
	PseudoThread

	* pseudoThread.hh (class PseudoThread): moved enum Communications
	here

2021-03-22  Steven Eker  <eker2@eker10>

	* streamManagerSymbol.cc (StreamManagerSymbol::getLine): rewritten
	to do getLineFromStdin() in a separate process if stdin is a
	terminal

2021-03-09  Steven Eker  <eker2@eker10>

	* timeActions.cc (TimeManagerSymbol::deleteTimer): fix bug where
	we were not deleting the timer from the context which would cause
	a subsequent crash when the context was deleted

===================================Maude135===========================================

2021-03-08  Steven Eker  <eker2@eker10>

	* timeActions.cc (TimeManagerSymbol::makeDate): fix off-by-one in
	day of the month

2021-03-05  Steven Eker  <eker2@eker10>

	* timeActions.cc (TimeManagerSymbol::startTimer): insist that
	nanoseconds > 0
	(TimeManagerSymbol::deleteTimer): added DebugInfo()

2021-03-04  Steven Eker  <eker2@eker10>

	* timeManagerSymbol.hh (class TimeManagerSymbol): added decls for
	stopTimer(), deleteTimer()

	* timeActions.cc (TimeManagerSymbol::stopTimer): added
	(TimeManagerSymbol::deleteTimer): added

	* timeManagerSymbol.cc (TimeManagerSymbol::handleMessage): handle
	stopTimerMsg and deleteTimerMsg

	* timeActions.cc (TimeManagerSymbol::createTimer): clear
	callbackRequestTime

	* timeManagerSymbol.cc (TimeManagerSymbol::doCallback): handle
	periodic mode

	* timeActions.cc (TimeManagerSymbol::startTimer): use
	callbackRequestTime rather than callbackTime

	* timeManagerSymbol.hh (class TimeManagerSymbol): replace
	callbackTime with callbackRequestTime in struct Timer

	* timeManagerSymbol.cc (TimeManagerSymbol::cleanUp): implemented

	* timeManagerSymbol.hh (class TimeManagerSymbol): added decl for
	getTimer()

	* timeActions.cc (TimeManagerSymbol::getTimer): added

	* pseudoThread.cc (PseudoThread::eventLoop): clear block flag if
	we handled an event to ensure we exit
	(PseudoThread::eventLoop): restructured
	(PseudoThread::eventLoop): added DebugInfo()s

	* objectSystemRewritingContext.cc
	(ObjectSystemRewritingContext::externalRewrite): only break on
	NOTHING_PENDING if not EVENT_HANDLED

	* pseudoThread.cc (PseudoThread::eventLoop): && not & for
	callbacksPending && block

2021-03-03  Steven Eker  <eker2@eker10>

	* timeManagerSymbol.hh (class TimeManagerSymbol): added decl for
	doCallback()

	* timeManagerSymbol.cc (TimeManagerSymbol::handleMessage): handle
	startTimerMsg
	(TimeManagerSymbol::doCallback): added

	* timeManagerSymbol.hh (class TimeManagerSymbol): added decls for
	getMode(), startTimer()

	* timeActions.cc (TimeManagerSymbol::startTimer): added
	(TimeManagerSymbol::getMode): added

	* timeManagerSymbol.hh (class TimeManagerSymbol): added decls for
	findUnusedId(), createdTimerReply(), createTimer()

	* timeActions.cc (TimeManagerSymbol::findUnusedId)
	(TimeManagerSymbol::createdTimerReply)
	(TimeManagerSymbol::createTimer): added

	* timeManagerSymbol.cc (TimeManagerSymbol::handleManagerMessage):
	handle createTimerMsg

	* timeManagerSymbol.hh (class TimeManagerSymbol): added struct
	Timer, typedef TimerMap, data member timerMap

	* pseudoThread.hh (class PseudoThread): added decl for
	cancelCallback()

	* pseudoThread.cc (PseudoThread::eventLoop): check callbackMap and
	use new processCallbacks() semantics
	(PseudoThread::cancelCallback): added

	* pseudoThread.hh (class PseudoThread): new struct
	CallbackRequest; added typedef CallbackMap; deleted typedef
	CallbackQueue; added typedef CallbackHandle
	(class PseudoThread): updated decl for requestCallback()
	(class PseudoThread): updated decl for processCallbacks()
	(class PseudoThread): added static data member callbackMap;
	deleted static data member callBackQueue
	(class PseudoThread): updated decl for doCallback()
	(PseudoThread::CallbackRequest::CallbackRequest): rewritten
	(PseudoThread::CallbackRequest::operator): deleted

	* pseudoThread.cc (PseudoThread::requestCallback): rewritten
	(PseudoThread::processCallbacks): rewritten
	(PseudoThread::doCallback): now takes clientData argument

2021-03-02  Steven Eker  <eker2@eker10>

	* timeActions.cc (TimeManagerSymbol::getTimeSinceEpoch): use
	clock_gettime() rather then gettimeofday()

	* timeSignature.cc: added createTimerMsg, createdTimerMsg,
	startTimerMsg, startedTimerMsg, timeOutMsg, deleteTimerMsg,
	deletedTimerMsg, stopTimerMsg, stoppedTimerMsg

	* timeActions.cc (TimeManagerSymbol::getDateAndTime): use
	getScaledSignedInt64() to avoid wrap-around of nanoseconds in
	extreme situations
	(TimeManagerSymbol::getLocalDateAndTime): ditto
	(TimeManagerSymbol::makeDate): do the year addition on bignums to
	avoid wrapping in edge cases

	* timeManagerSymbol.hh (class TimeManagerSymbol): added BILLION to
	enum Special

	* timeActions.cc (TimeManagerSymbol::getLocalDateAndTime): added
	(TimeManagerSymbol::makeTimeZoneInfo): added

	* timeManagerSymbol.cc (TimeManagerSymbol::handleManagerMessage):
	handle getDateAndTimeMsg

	* timeSignature.cc: added getLocalDateAndTimeMsg,
	gotLocalDateAndTimeMsg

	* timeManagerSymbol.hh (class TimeManagerSymbol): deleted decl for
	getTimeZone(); added decls for makeDate(), makeTime()

	* timeActions.cc (TimeManagerSymbol::makeTime): added
	(TimeManagerSymbol::makeDate): added

	* timeManagerSymbol.hh (class TimeManagerSymbol): added enum
	Special

	* timeActions.cc (TimeManagerSymbol::getDateAndTime): rewritten
	for new convention
	(TimeManagerSymbol::getTimeZone): deleted

	* timeSignature.cc: added dateSymbol, timeSymbol,
	timeZoneInfoSymbol; deleted dateAndTimeSymbol, utcSymbol,
	localSymbol

2021-03-01  Steven Eker  <eker2@eker10>

	* timeSignature.cc: created

	* timeManagerSymbol.cc: created

	* timeManagerSymbol.hh: created

	* timeActions.cc: created

	* fileManagerSymbol.cc (FileManagerSymbol::handleManagerMessage):
	restrutured if statement

===================================Maude134===========================================

2021-02-17  Steven Eker  <eker2@eker10>

	* remainder.cc (ConfigSymbol::Remainder::markReachableNodes): use
	range-based for loop instead of FOR_EACH_CONST()

	* objectSystemRewritingContext.cc (~ObjectSystemRewritingContext):
	use range-based for loop instead of FOR_EACH_CONST(); get rid of
	check for empty
	(ObjectSystemRewritingContext::markReachableNodes): use
	range-based for loop instead of FOR_EACH_CONST() (3 places)

	* objectMap.cc (ConfigSymbol::MessageQueue::markReachableNodes):
	use range-based for loop instead of FOR_EACH_CONST()
	(ConfigSymbol::ObjectMap::markReachableNodes): use range-based for
	loop instead of FOR_EACH_CONST()
	(ConfigSymbol::ObjectMap::dump): use range-based for loop instead
	of FOR_EACH_CONST() (2 places)

	* configSymbol.cc (ConfigSymbol::ruleRewrite): use range-based for
	loop instead of FOR_EACH_CONST(); turned commented out prints into
	DebugInfo()s
	(ConfigSymbol::ConfigSymbol): deleted commented out print
	statement

2021-02-16  Steven Eker  <eker2@eker10>

	* fileManagerSymbol.hh (class FileManagerSymbol): added decl for
	removeFile()

	* fileSignature.cc: added removeFileMsg and removedFileMsg

	* fileManagerSymbol.cc (FileManagerSymbol::handleManagerMessage):
	handle removeFileMsg

	* fileActions.cc (FileManagerSymbol::write): missing else
	(FileManagerSymbol::removeFile): added

2021-02-15  Steven Eker  <eker2@eker10>

	* fileManagerSymbol.cc (FileManagerSymbol::handleManagerMessage)
	(FileManagerSymbol::handleMessage): turn commented out cerr <<
	statements into DebugInfo()s

	* fileManagerSymbol.hh (class FileManagerSymbol): updated decls
	for openFile(), write(), flush(), getLine(), getChars(),
	getPosition(), setPosition(), closeFile()

	* fileManagerSymbol.cc (FileManagerSymbol::handleMessage):
	restructured now that action functions no longer return bool
	(FileManagerSymbol::handleManagerMessage): restructured now that
	openFile() no longer returns bool

	* fileActions.cc (FileManagerSymbol::openFile): accept all
	messages; added error replies for bad file name and bad mode
	(FileManagerSymbol::write): accept all messages; added error
	replies for bad characters and file not open for writing
	(FileManagerSymbol::flush): accept all messages; added error reply
	for file not open for writing
	(FileManagerSymbol::getLine): accept all messages; added error
	reply for file not open for reading
	(FileManagerSymbol::getChars): accept all messages; added error
	replies for bad number of chars and file not open for reading
	(FileManagerSymbol::setPosition): accept all messages; added error
	replies for bad offset and bad base
	(FileManagerSymbol::openFile, FileManagerSymbol::write)
	(FileManagerSymbol::flush, FileManagerSymbol::getLine)
	(FileManagerSymbol::getChars, FileManagerSymbol::getPosition)
	(FileManagerSymbol::setPosition, FileManagerSymbol::closeFile):
	return void rather than bool

===================================Maude133===========================================

2021-02-04  Steven Eker  <eker2@eker10>

	* pseudoThread-pselect.cc (PseudoThread::processFds): fix bug
	where we were assuming that active fds were linked in ascending
	order when they are not and so we were computing the wrong maxFd

2020-10-05  Steven Eker  <eker2@eker10>

	* processOutcomes.cc (ProcessManagerSymbol::exitedReply): don't do
	a find() unless we need it for the Assert() to avoid compiler
	warning

	* processStuff.cc (ProcessManagerSymbol::doChildExit): use
	DebugSave for exitPid to avoid compiler warning

===================================Maude131===========================================

2020-07-13  Steven Eker  <eker2@eker10>

	* socketAsync.cc (SocketManagerSymbol::doRead): ditto

	* socketStuff.cc (SocketManagerSymbol::receive): only return 0
	characters once; on a second receive() we revert to legacy
	behavior and close the socket to minimize backwards
	incompatibility

	* socketManagerSymbol.cc
	(SocketManagerSymbol::ActiveSocket::ActiveSocket): clear seenEOF

	* socketManagerSymbol.hh (class SocketManagerSymbol): added data
	member seenEOF to struct ActiveSocket

	* socketAsync.cc (SocketManagerSymbol::doRead): ditto

	* socketStuff.cc (SocketManagerSymbol::receive): handle 0
	characters read(), i.e. EOF, by returning 0 characters rather
	than closing the socket

2020-07-09  Steven Eker  <eker2@eker10>

	* fileActions.cc (FileManagerSymbol::openFile): check allowFiles
	flag before opening file

	* fileManagerSymbol.cc: init allowFiles

	* processActions.cc (ProcessManagerSymbol::createProcess):
	noExecute -> allowProcesses

	* processManagerSymbol.cc: noExecute -> allowProcesses

	* processManagerSymbol.hh (ProcessManagerSymbol::setNoExecute):
	becomes setAllowProcesses
	(class ProcessManagerSymbol): noExecute -> allowProcesses

	* fileManagerSymbol.hh (FileManagerSymbol::setAllowFiles): added
	(class FileManagerSymbol): added data member allowFiles

===================================Maude129===========================================

2020-05-19  Steven Eker  <eker2@eker10>

	* processManagerSymbol.hh (class ProcessManagerSymbol): updated
	decl for makeNonblockingSocketPair(); remove unused #defines

	* processActions.cc
	(ProcessManagerSymbol::makeNonblockingSocketPair): handle readOnly
	flag
	(ProcessManagerSymbol::createProcess): pass readOnly flag (2
	places)

	* socketStuff.cc (SocketManagerSymbol::send): do a shutdown() when
	asked to send empty string
	(SocketManagerSymbol::send): make shutdown socket readOnly; check
	for shutdown() error

2020-05-08  Steven Eker  <eker2@eker10>

	* socketStuff.cc (SocketManagerSymbol::getPort): replace magic
	number with MAX_PORT_NUMBER
	(SocketManagerSymbol::createServerTcpSocket): use ::bind() to
	avoid std::bind() in C++1x

	* socketManagerSymbol.hh (class SocketManagerSymbol): added
	MAX_PORT_NUMBER

	* processActions.cc (ProcessManagerSymbol::createProcess): added
	IssueAdvisory()s in the return false cases
	(ProcessManagerSymbol::waitForExit): added IssueAdvisory() for
	extra waitForExit() message
	(ProcessManagerSymbol::waitForExit): added IssueAdvisory() for
	missing process
	(ProcessManagerSymbol::signalProcess): added IssueAdvisory()s for
	missing process and malformed message

	* pseudoThread.cc (PseudoThread::doRead, PseudoThread::doWrite)
	(PseudoThread::doError, PseudoThread::doCallback)
	(PseudoThread::doHungUp): Assert() -> CantHappen()

	* socketAsync.cc (SocketManagerSymbol::doRead): only clear
	WAITING_TO_READ flag in normal case
	(SocketManagerSymbol::doRead): clear WAITING_TO_ACCEPT flag;
	updated comment; use CantHappen() rather than Assert()

	* socketStuff.cc (SocketManagerSymbol::acceptClient): updated
	comment
	(SocketManagerSymbol::send): added Assert() that we actually have
	characters to send

	* pseudoThread-pselect.cc (PseudoThread::processFds): split off
	record of child events into childEvent; added Assert()

	* pseudoThread-ppoll.cc (PseudoThread::processFds): split off
	record of child events into childEvent so that Assert() is correct

2020-05-07  Steven Eker  <eker2@eker10>

	* processActions.cc (ProcessManagerSymbol::createProcess): don't
	disallow close on sockets

	* processManagerSymbol.hh (class ProcessManagerSymbol): deleted
	decl for managedSocketDisconnected()

	* processStuff.cc
	(ProcessManagerSymbol::managedSocketDisconnected): deleted

	* socketManagerSymbol.hh (class SocketManagerSymbol): updated decl
	for manageSocket()

	* socketManagerSymbol.cc
	(SocketManagerSymbol::ActiveSocket::ActiveSocket): don't clear
	client member

	* socketManagerClient.hh: deleted

	* processManagerSymbol.hh: don't derive from SocketManagerClient

	* socketManagerSymbol.hh (class SocketManagerSymbol): deleted decl
	for closeManagedSocket(); made closedSocketReply() private again
	(class SocketManagerSymbol): delete client member from
	ActiveSocket

	* processActions.cc (ProcessManagerSymbol::createProcess): don't
	pass this to manageSocket() (2 places)

	* socketManagerSymbol.cc
	(SocketManagerSymbol::closeManagedSocket): deleted
	(SocketManagerSymbol::manageSocket): don't take client since we're
	no longer going to make callbacks

	* socketManagerSymbol.hh (class SocketManagerSymbol): added decl
	for handleException()

	* socketAsync.cc (SocketManagerSymbol::handleException): added
	(SocketManagerSymbol::doHungUp, SocketManagerSymbol::doError):
	reimplemented using handleException

	* socketStuff.cc (SocketManagerSymbol::receive): don't bother
	with client->managedSocketDisconnected()

	* socketAsync.cc (SocketManagerSymbol::doRead): don't bother
	with client->managedSocketDisconnected()
	(SocketManagerSymbol::doRead): deleted commented out code

	* socketStuff.cc (SocketManagerSymbol::cleanUp): always close
	socket here

	* processStuff.cc (ProcessManagerSymbol::cleanUp): don't close
	sockets here

	* processOutcomes.cc (ProcessManagerSymbol::exitedReply): don't
	close sockets because there could still be characters to read

	* socketStuff.cc (SocketManagerSymbol::cleanUp): delete textArray
	just in case we had a pending write

	* socketAsync.cc (SocketManagerSymbol::doWrite):  clear
	WAITING_TO_WRITE, send socketError() and delete textArray in error
	case
	(SocketManagerSymbol::doWrite): Assert() that we don't get a would
	block error; Assert() that we didn't send 0 characters
	(SocketManagerSymbol::doWrite): changed Assert() to CantHappen()

	* socketStuff.cc (SocketManagerSymbol::send): delete textArray in
	error case

	* socketAsync.cc (SocketManagerSymbol::doWrite): only clear
	WAITING_TO_WRITE flag rather than all flags if last character sent

	* socketStuff.cc (SocketManagerSymbol::send): generate
	socketError() message on a write() error rather than closing the
	socket or passing the problem to
	client->managedSocketDisconnected()

2020-05-06  Steven Eker  <eker2@eker10>

	* socketManagerSymbol.cc
	(SocketManagerSymbol::closeManagedSocket): DebugAlways() ->
	DebugEnter()

	* processStuff.cc
	(ProcessManagerSymbol::managedSocketDisconnected): DebugAlways()
	-> DebugEnter()

	* processManagerSymbol.hh (class ProcessManagerSymbol):
	disconnected() -> managedSocketDisconnected()

	* socketAsync.cc (SocketManagerSymbol::doHungUp): use
	managedSocketDisconnected()

	* socketManagerSymbol.cc
	(SocketManagerSymbol::closeManagedSocket): don't bother with
	clearFlags() if nothing is pending

	* socketManagerSymbol.hh (class SocketManagerSymbol): deleted decl
	for unmanageSocket()

	* socketManagerSymbol.cc (SocketManagerSymbol::unmanageSocket):
	deleted

	* socketManagerSymbol.hh (class SocketManagerSymbol): make
	closedSocketReply() public

	* processStuff.cc
	(ProcessManagerSymbol::managedSocketDisconnected): was
	disconnected(); use closedSocketReply() instead of
	closedManagedSocket() (2 places)

	* processManagerSymbol.hh: added #defines IO_SOCKET_CLOSE_MSG,
	ERR_SOCKET_CLOSE_MSG

	* socketAsync.cc (SocketManagerSymbol::doRead): use
	managedSocketDisconnected()
	(SocketManagerSymbol::doWrite): use managedSocketDisconnected()
	(SocketManagerSymbol::doError): use managedSocketDisconnected()

	* socketStuff.cc (SocketManagerSymbol::send): use
	managedSocketDisconnected()
	(SocketManagerSymbol::receive): use managedSocketDisconnected() (2
	places)

	* socketManagerClient.hh (class SocketManagerClient):
	disconnected() becomes managedSocketDisconnected() and gets a
	message argument

2020-05-05  Steven Eker  <eker2@eker10>

	* socketManagerSymbol.cc
	(SocketManagerSymbol::closeManagedSocket): added Assert()

	* socketOutcomes.cc (SocketManagerSymbol::closedSocketReply):
	removed commented out disconnect() code

	* socketManagerClient.hh (class SocketManagerClient): updated decl
	for disconnected()

	* processManagerSymbol.hh (class ProcessManagerSymbol): updated
	decl for disconnected()

	* processStuff.cc (ProcessManagerSymbol::cleanUp): check for the
	case that one or both sockets make already have been closed by the
	disconnected() callback

	* processOutcomes.cc (ProcessManagerSymbol::exitedReply): check
	for the case that one or both sockets make already have been
	closed by the disconnected() callback

	* processStuff.cc (ProcessManagerSymbol::disconnected): take
	context argument and just close the socket gracefully

	* socketStuff.cc (SocketManagerSymbol::send): call disconnected()
	rather than closeSocketReply() if managing the socket on behalf of
	a client
	(SocketManagerSymbol::receive): fixed incorrect comment
	(SocketManagerSymbol::receive): call disconnected() rather than
	closeSocketReply() if managing the socket on behalf of a client

	* socketAsync.cc (SocketManagerSymbol::doRead)
	(SocketManagerSymbol::doWrite): call disconnected() rather than
	closeSocketReply() if managing the socket on behalf of a client
	(SocketManagerSymbol::doError, SocketManagerSymbol::doHungUp):
	call disconnected() rather than closeSocketReply() if managing the
	socket on behalf of a client

	* pseudoThread.cc (PseudoThread::clearFlags): added comment

	* pseudoThread-pselect.cc (PseudoThread::processFds): symmetric
	change

	* pseudoThread-ppoll.cc (PseudoThread::processFds): check
	info.flags before each callback because an earlier callback might
	have cleared them

2020-05-04  Steven Eker  <eker2@eker10>

	* processActions.cc (ProcessManagerSymbol::makeCloseOnExitPipe):
	simplified
	(ProcessManagerSymbol::makeNonblockingSocketPair): set the
	close-on-execute flag on the parent file descriptor so it isn't
	leaked into future children

	* socketStuff.cc (SocketManagerSymbol::createClientTcpSocket):
	lastMessage -> lastWriteMessage; originalContext -> objectContext
	(SocketManagerSymbol::acceptClient): lastMessage ->
	lastReadMessage; originalContext -> objectContext
	(SocketManagerSymbol::send): lastMessage -> lastWriteMessage;
	originalContext -> objectContext
	(SocketManagerSymbol::receive): lastMessage -> lastReadMessage;
	originalContext -> objectContext
	(SocketManagerSymbol::setNonblockingFlag): also set the
	close-on-execute flag to avoid leaking file descriptor into child

	* socketManagerSymbol.cc
	(SocketManagerSymbol::closeManagedSocket): use lastWriteMessage or
	lastReadMessage depending on state;

	* socketAsync.cc (SocketManagerSymbol::doRead): lastMessage ->
	lastReadMessage; originalContext -> objectContext
	(SocketManagerSymbol::doWrite): lastMessage -> lastWriteMessage;
	originalContext -> objectContext
	(SocketManagerSymbol::doError, SocketManagerSymbol::doError): use
	lastWriteMessage or lastReadMessage depending on state;
	originalContext -> objectContext

	* socketManagerSymbol.hh (class SocketManagerSymbol):
	originalContext -> objectContext; lastMessage split into
	lastReadMessage and lastWriteMessage so we can wait both
	to read and to write for duplex operation of socket

	* processManagerSymbol.hh (class ProcessManagerSymbol): added decl
	for makeCloseOnExitPipe(); added
	(class ProcessManagerSymbol): added enum SpecialValues

	* processActions.cc (ProcessManagerSymbol::createProcess): use
	makeCloseOnExitPipe() to detect child failure

	* processManagerSymbol.hh (class ProcessManagerSymbol): updated
	decl for errorReply()

	* processOutcomes.cc (ProcessManagerSymbol::errorReply): take
	Rope&

	* processActions.cc (ProcessManagerSymbol::makeCloseOnExitPipe):
	added

2020-05-01  Steven Eker  <eker2@eker10>

	* processOutcomes.cc (ProcessManagerSymbol::exitedReply): use
	closeManagedSocket() rather then unmanageSocket()

	* socketAsync.cc (SocketManagerSymbol::doError)
	(SocketManagerSymbol::doHungUp): use DebugInfo()

	* socketAsync.cc (SocketManagerSymbol::doRead)
	(SocketManagerSymbol::doWrite): use DebugInfo()

	* socketManagerSymbol.hh (class SocketManagerSymbol): added decl
	for closeManagedSocket()

	* socketManagerSymbol.cc
	(SocketManagerSymbol::closeManagedSocket): added

	* socketManagerSymbol.hh (class SocketManagerSymbol): added FIXME
	notices since it looks like sharing lastMessage and
	originalContext between waits for send and receive is a bug

	* pseudoThread-ppoll.cc (PseudoThread::processFds): do
	dispatchChildRequests() first because this can change the active
	file descriptors

	* processManagerSymbol.hh (class ProcessManagerSymbol): added decl
	for makeNonblockingSocketPair()

	* processActions.cc
	(ProcessManagerSymbol::makeNonblockingSocketPair): added
	(ProcessManagerSymbol::createProcess): use
	makeNonblockingSocketPair() (2 places)

2020-04-30  Steven Eker  <eker2@eker10>

	* pseudoThread-pselect.cc: created

	* processActions.cc (ProcessManagerSymbol::createProcess):
	generate errorReply() if socketpair() or fcntl() calls fail
	(ProcessManagerSymbol::createProcess): check that request is well
	formed before checking if process creation is allowed; handle
	disallowed case with errorReply(); downgrade warning to an
	advisory
	(ProcessManagerSymbol::createProcess): handle failed fork() with
	errorReply()

	* processManagerSymbol.hh (class ProcessManagerSymbol): added decl
	for errorReply()

	* processOutcomes.cc (ProcessManagerSymbol::errorReply): added

2020-04-29  Steven Eker  <eker2@eker10>

	* pseudoThread-ppoll.cc (PseudoThread::processFds): avoid race
	condition by just restoring SIGCHLD and not callers normalSet

	* pseudoThread.hh (class PseudoThread): updated decl for
	processFds()
	(class PseudoThread): updated decl for processCallbacks()

	* pseudoThread-ppoll.cc (PseudoThread::processFds): take const
	timespec*

	* pseudoThread.hh (class PseudoThread): added static data member
	zeroTime

	* pseudoThread.cc (PseudoThread::eventLoop): rewritten

	* pseudoThread.hh (PseudoThread::getTime): deleted
	(PseudoThread::CallbackRequest::CallbackRequest): take const timespec*

	* pseudoThread.cc (PseudoThread::processCallbacks): use
	clock_gettime() rather than getTime()
	(PseudoThread::processCallbacks): new semantics

	* pseudoThread.hh (PseudoThread::CallbackRequest::operator<): use
	timespec

	* pseudoThread.cc (PseudoThread::requestCallback): take const
	timespec*

	* pseudoThread.hh (class PseudoThread): requestCallback now uses
	timespec*
	(class PseudoThread): CallbackRequest notBefore field is now a
	timespec

	* processOutcomes.cc (ProcessManagerSymbol::exitedReply): added
	Assert()

	* processManagerSymbol.hh (class ProcessManagerSymbol): made
	getSignalNumber() and getSignalName() static

	* processActions.cc (ProcessManagerSymbol::getChildProcess)
	(ProcessManagerSymbol::createProcess)
	(ProcessManagerSymbol::checkStringList)
	(ProcessManagerSymbol::makeStringArray)
	(ProcessManagerSymbol::waitForExit, MACRO)
	(ProcessManagerSymbol::signalProcess): moved here

	* processStuff.cc (ProcessManagerSymbol::cleanUp): be robust
	against waitpid() exiting due to a signal
	(ProcessManagerSymbol::cleanUp): erase the ChildProcess from
	childProcesses

	* processManagerSymbol.hh (class ProcessManagerSymbol): cleaned up
	struct ChildProcess

	* processStuff.cc: originalContext -> waitContext

	* processManagerSymbol.hh: originalContext -> waitContext

	* processStuff.cc (ProcessManagerSymbol::cleanUp): make sure
	to cancel any child exit callback request

2020-04-28  Steven Eker  <eker2@eker10>

	* pseudoThread-ppoll.cc (PseudoThread::processFds): don't write
	into timeOutAt

	* pseudoThread.cc (PseudoThread::doTimeOut): deleted
	(PseudoThread::wantTo): don't take timeOutAt arg

	* pseudoThread.hh (class PseudoThread): updated decl for wantTo()
	(class PseudoThread): deleted timeOutAt from struct FD_Info
	(class PseudoThread): deleted decl for doTimeOut()

	* pseudoThread-ppoll.cc (PseudoThread::processFds): moved here
	(PseudoThread::processFds): don't handle timeouts on fds; don't
	need them for Maude

2020-04-27  Steven Eker  <eker2@eker10>

	* processStuff.cc (ProcessManagerSymbol::waitForExit): check for
	second waitForExit() for the same process

	* processManagerSymbol.hh (class ProcessManagerSymbol): updated comment
	(ProcessManagerSymbol::ChildProcess::ChildProcess): added in order
	to ensure originalContext is zero'd

2020-04-24  Steven Eker  <eker2@eker9>

	* supportedSignals.cc: added many more signals

	* processOutcomes.cc (ProcessManagerSymbol::getSignalName): added

	* processStuff.cc (ProcessManagerSymbol::waitForExit): pass
	terminatingSignal by 1's complement
	(ProcessManagerSymbol::doChildExit): pass terminatingSignal by 1's
	complement

	* processOutcomes.cc (ProcessManagerSymbol::exitedReply): moved
	here

	* processStuff.cc (ProcessManagerSymbol::exitedReply): use
	normalExitSymbol, terminatedBySignal

	* processSignature.cc: added normalExitSymbol and
	terminatedBySignalSymbol; deleted minusSymbol

	* processStuff.cc (ProcessManagerSymbol::createProcess): respect
	noExecute flag

	* processManagerSymbol.hh (class ProcessManagerSymbol): static
	data member noExecute

2020-04-23  Steven Eker  <eker2@eker9>

	* processStuff.cc (ProcessManagerSymbol::doChildExit): don't need
	to cancelChildExitCallback() since these are automatically removed
	on delivery
	(ProcessManagerSymbol::waitForExit): pass - terminating signal to
	exitedReply()
	(ProcessManagerSymbol::doChildExit): ditto

	* pseudoThreadSignal.cc (PseudoThread::sigchldHandler): handle
	CLD_KILLED and CLD_DUMPED cases

	* pseudoThread.hh (class PseudoThread): updated decl for
	processFds()

	* pseudoThread.cc (PseudoThread::processFds): take and use
	normalSet in the blocking case
	(PseudoThread::eventLoop): pass normalSet to processFds()

	* processManagerSymbol.cc (ProcessManagerSymbol::handleMessage):
	call signalProcess()

	* supportedSignals.cc: created

	* processManagerSymbol.hh (class ProcessManagerSymbol): added decls
	for signalProcess(), getSignalNumber()

	* processStuff.cc (ProcessManagerSymbol::getSignalNumber): added
	(ProcessManagerSymbol::signalProcess): added
	(ProcessManagerSymbol::createProcess): added comment

2020-04-22  Steven Eker  <eker2@eker9>

	* objectSystemRewritingContext.cc
	(ObjectSystemRewritingContext::externalRewrite): restructured loop

	* pseudoThread.hh (class PseudoThread): updated decl for
	eventLoop()

	* objectSystemRewritingContext.hh (class
	ObjectSystemRewritingContext): added decl for interleave()

	* objectSystemRewritingContext.cc
	(ObjectSystemRewritingContext::externalRewrite): remove EXT_BIAS
	hack since it looks like we never used it for anything
	(ObjectSystemRewritingContext::externalRewrite): call
	blockAndHandleInterrupts(); restore normal interrupt mask before
	bailing; pass normal interrupt mask to eventLoop()
	(ObjectSystemRewritingContext::interleave): added to hold inner
	loop
	(ObjectSystemRewritingContext::externalRewrite): rewritten using
	interleave()

	* processSignature.cc: added minusSymbol

2020-04-21  Steven Eker  <eker2@eker9>

	* pseudoThread.cc (PseudoThread::processFds): use ppoll() to avoid
	occasional race condition.

	* processManagerSymbol.hh (class ProcessManagerSymbol): added decl
	for doChildExit()

	* processStuff.cc (ProcessManagerSymbol::doChildExit): added
	(ProcessManagerSymbol::waitForExit): save context if we are
	waiting for a callback

	* pseudoThread.cc (PseudoThread::eventLoop): call processFds()
	if there are pending childRequests

	* pseudoThread.hh (class PseudoThread): updated decl for
	dispatchChildRequests()

	* pseudoThreadSignal.cc (PseudoThread::dispatchChildRequests):
	return a flag to say if we did a callback

	* pseudoThread.cc (PseudoThread::processFds): call
	dispatchChildRequests()

	* pseudoThreadSignal.cc (PseudoThread::dispatchChildRequests):
	clear exitedFlag

2020-04-20  Steven Eker  <eker2@eker9>

	* pseudoThreadSignal.cc (PseudoThread::cancelChildExitCallback):
	fix bug where we we're incrementing i

	* processStuff.cc (ProcessManagerSymbol::exitedReply): clean up
	sockets

	* socketManagerSymbol.hh (class SocketManagerSymbol): added decl
	for unmanageSocket()

	* socketManagerSymbol.cc (SocketManagerSymbol::unmanageSocket):
	added

	* processStuff.cc (ProcessManagerSymbol::exitedReply): close
	sockets and remove external object for process

	* processManagerSymbol.cc (ProcessManagerSymbol::handleMessage):
	need to return the value from waitForExit()

	* processManagerSymbol.hh (class ProcessManagerSymbol): added decl
	for exitedReply()

	* processStuff.cc (ProcessManagerSymbol::exitedReply): added
	(ProcessManagerSymbol::waitForExit): call exitedReply() (2 places)

2020-04-17  Steven Eker  <eker2@eker9>

	* processManagerSymbol.hh (class ProcessManagerSymbol): derive
	from PseudoThread, added decl for waitForExit()

	* processStuff.cc (ProcessManagerSymbol::waitForExit): added

	* processManagerSymbol.hh (class ProcessManagerSymbol): added
	member waitMessage to struct ChildProcess

	* processManagerSymbol.cc (ProcessManagerSymbol::handleMessage):
	handle waitForExit()

	* pseudoThread.hh (class PseudoThread): added decl for
	cancelChildExitCallback()

	* pseudoThreadSignal.cc (PseudoThread::monitorChild): becomes
	requestChildExitCallback()
	(PseudoThread::dispatchChildRequests): need to contract
	childRequests Vector
	(PseudoThread::cancelChildExitCallback): added

	* pseudoThread.hh: CallBack -> Callback everywhere
	(class PseudoThread): monitorChild() -> requestChildExitCallback()

	* pseudoThread.cc: CallBack -> Callback everywhere

2020-04-16  Steven Eker  <eker2@eker9>

	* pseudoThread.hh (class PseudoThread): added struct ChildRequest
	(class PseudoThread): added data members childRequests,
	installedSigchldHandler, exitedFlag
	(class PseudoThread): added decls for doChildExited(),
	monitorChild(), dispatchChildRequests()

	* pseudoThreadSignal.cc: created

	* processSignature.cc: added signaledProcessMsg, waitForExitMsg

2020-04-15  Steven Eker  <eker2@eker9>

	* socketOutcomes.cc (SocketManagerSymbol::closedSocketReply): call
	disconnected() for sockets we're managing on behalf of a client

	* processStuff.cc (ProcessManagerSymbol::createProcess): pass
	this to manageSocket() (2 places)
	(ProcessManagerSymbol::disconnected): added

	* processManagerSymbol.hh (class ProcessManagerSymbol): derive
	from SocketManagerClient
	(class ProcessManagerSymbol): added decl for disconnected()

	* socketManagerSymbol.hh (class SocketManagerSymbol): updated
	decl for manageSocket()

	* socketManagerSymbol.cc
	(SocketManagerSymbol::ActiveSocket::ActiveSocket): initialize
	client field
	(SocketManagerSymbol::manageSocket): handle client argument

	* socketManagerSymbol.hh (class SocketManagerSymbol): added
	client member to struct ActiveSocket

	* socketManagerClient.hh (class SocketManagerClient): created

2020-04-10  Steven Eker  <eker2@eker9>

	* processStuff.cc (ProcessManagerSymbol::cleanUp): kill() and
	waitpid() to make sure the child is dead and remove it's zombie

	* objectSystem.hh: added classes SocketManagerSymbol,
	FileManagerSymbol, StreamManagerSymbol, ProcessManagerSymbol

	* processManagerSymbol.hh (class ProcessManagerSymbol): use pid_t
	rather than int for ProcessMap

2020-04-09  Steven Eker  <eker2@eker9>

	* processManagerSymbol.hh (class ProcessManagerSymbol): added decl
	for getChildProcess()

	* processStuff.cc (ProcessManagerSymbol::cleanUp): partly
	implemented
	(ProcessManagerSymbol::createProcess): make ChildProcess
	record
	(ProcessManagerSymbol::createProcess): pass disallowClose=true to
	manageSocket() calls

	* processManagerSymbol.hh (class ProcessManagerSymbol): added
	ioSocket, errSocket members to struct ChildProcess

	* processStuff.cc (ProcessManagerSymbol::getChildProcess): added

	* socketStuff.cc (SocketManagerSymbol::cleanUp): don't close
	sockets with disallowClose flag set
	(SocketManagerSymbol::closeSocket): don't accept closeSocket()
	message if disallowClose flag is set
	(SocketManagerSymbol::send): dont accept send() message if
	readOnly flag is set

	* socketManagerSymbol.hh (class SocketManagerSymbol): added
	disallowClose, readOnly flags to ActiveSocket

	* socketManagerSymbol.cc
	(SocketManagerSymbol::ActiveSocket::ActiveSocket): initialize
	disallowClose, readOnly flags
	(SocketManagerSymbol::manageSocket): set out disallowClose,
	readOnly flags

2020-04-02  Steven Eker  <eker2@eker9>

	* socketStuff.cc (SocketManagerSymbol::receive): added check
	for EWOULDBLOCK and comment explaining why we do this
	(SocketManagerSymbol::createClientTcpSocket): added comment
	to explain why nonblocking is critical for input as well as
	output

2020-04-01  Steven Eker  <eker2@eker9>

	* processStuff.cc (ProcessManagerSymbol::createProcess): pass
	context to manageSocket()

	* socketManagerSymbol.hh (class SocketManagerSymbol): updated
	decl for manageSocket()

	* socketManagerSymbol.cc (SocketManagerSymbol::manageSocket):
	implemented
	(SocketManagerSymbol::manageSocket): need to register socket
	as an external object
	(SocketManagerSymbol::manageSocket): need to take context
	argument

	* processStuff.cc (ProcessManagerSymbol::createProcess): added
	DebugAdvisory() for replyMsg

2020-03-31  Steven Eker  <eker2@eker9>

	* processManagerSymbol.hh (class ProcessManagerSymbol): updated
	decl for makeStringArray()

	* processStuff.cc (ProcessManagerSymbol::makeStringArray):
	revert to making a separate string for array[0] due to
	const correctness
	(ProcessManagerSymbol::createProcess): pass executableArg
	to makeStringArray()

	* socketManagerSymbol.hh (class SocketManagerSymbol): added
	decl for manageSocket()

	* processStuff.cc (ProcessManagerSymbol::makeStringArray):
	don't both with constness for allocating array

	* socketManagerSymbol.cc (SocketManagerSymbol::manageSocket):
	added stub

2020-03-30  Steven Eker  <eker2@eker9>

	* processStuff.cc (ProcessManagerSymbol::createProcess): use
	makeStringArray()

	* processManagerSymbol.hh (class ProcessManagerSymbol): added
	decl for makeStringArray()

	* processStuff.cc (ProcessManagerSymbol::createProcess):
	check options arg
	(makeStringArray): added

	* processSignature.cc: added emptyProcessOptionSetSymbol

2020-03-27  Steven Eker  <eker2@eker9>

	* processManagerSymbol.hh (class ProcessManagerSymbol):
	adde decl for checkStringList()

	* processStuff.cc (ProcessManagerSymbol::checkStringList):
	added
	(ProcessManagerSymbol::createProcess): use checkStringList()

2020-03-26  Steven Eker  <eker2@eker9>

	* processStuff.cc (ProcessManagerSymbol::createProcess): check
	that the executable arg is actually a string

	* processManagerSymbol.hh (class ProcessManagerSymbol): added
	decl for createProcess()

	* processManagerSymbol.cc
	(ProcessManagerSymbol::handleManagerMessage): call createProcess()

	* processSignature.cc: added nilStringListSymbol,
	stringListSymbol

2020-03-25  Steven Eker  <eker2@eker9>

	* processStuff.cc (ProcessManagerSymbol::cleanUp): added stub

	* processManagerSymbol.cc:
	(ProcessManagerSymbol::attachData)
	(ProcessManagerSymbol::attachSymbol)
	(ProcessManagerSymbol::copyAttachments)
	(ProcessManagerSymbol::getDataAttachments)
	(ProcessManagerSymbol::getSymbolAttachments)
	(ProcessManagerSymbol::handleManagerMessage)
	(ProcessManagerSymbol::handleMessage): added

	* processStuff.cc (ProcessManagerSymbol::createProcess): moved
	here

	* processManagerSymbol.cc (ProcessManagerSymbol::createProcess):
	parent side of ioSocket must be nonblocking

	* socketStuff.cc (SocketManagerSymbol::setNonblockingFlag):
	simplified

2020-03-24  Steven Eker  <eker2@eker9>

	* processManagerSymbol.cc: created

	* processSignature.cc: created

2020-03-20  Steven Eker  <eker2@eker9>

	* processManagerSymbol.hh: created

	* socketManagerSymbol.hh (class SocketManagerSymbol): deleted
	commented out crope text

===================================Maude128a===========================================

2020-03-05  Steven Eker  <eker2@eker9>

	* socketOutcomes.cc (SocketManagerSymbol::closedSocketReply): fix
	bug where closing a socket that was waiting for something
	leaves a dead active fd in PseudoThread

	* socketStuff.cc (SocketManagerSymbol::cleanUp): added
	and clarified comments
	(SocketManagerSymbol::send): deleted commented out code
	(SocketManagerSymbol::receive): deleted commneted out code
	(SocketManagerSymbol::send): cleaned up comments

	* pseudoThread.cc (PseudoThread::processFds): update Assert()
	message with something more explanatory.
	(PseudoThread::processFds): deleted commented out code
	(PseudoThread::processCallBacks): cleaned up comments
	(PseudoThread::processFds): cleaned up comments

===================================Maude128===========================================

2019-12-04  Steven Eker  <eker@mu>

	* fileActions.cc (getOpenFile): use DebugSave() to avoid unused variable
	warning when Assert() is compiled out

2019-12-03  Steven Eker  <eker@mu>

	* configSymbol.cc (ruleRewrite): use safeCastNonNull<>() (4 places)
	(retrieveObject): use safeCastNonNull<>()

===================================Maude127===========================================

2019-11-27  Rubén Rubio  <rubenrub@ucm.es>

	* fileActions.cc (write): fixed memory leak (textArray)

2019-07-25  Steven Eker  <eker@mu>

	* configSymbol.cc (compileRules): added comments
	(checkArgs): add comments including explanation of why this isn't
	a bug despite static analyzer finding.

===================================Maude123===========================================

2018-10-09  Steven Eker  <eker@install.csl.sri.com>

	* configSymbol.cc (ruleRewrite): pass subject = 0 to
	tracePreRuleRewrite() in fake rewrite cases.


2018-07-30  Steven Eker  <eker@install.csl.sri.com>

	* objectSystemRewritingContext.cc (externalRewrite): support
	EXT_BIAS as a temporary hack

	* socketManagerSymbol.hh (PseudoThread): increased READ_BUFFER_SIZE
	to 208K

===================================Maude118===========================================

2018-07-06  Steven Eker  <eker@install.csl.sri.com>

	* streamManagerSymbol.cc (getLine): use getLineFromStdin()

2018-05-31  Steven Eker  <eker@install.csl.sri.com>

	* configSymbol.cc (compileRules): call resetRules() for safety

	* objectSystemRewritingContext.cc (offerMessageExternally): turned
	commented out print statement into DebugAdvisory()

	* socketManagerSymbol.cc (handleManagerMessage, handleMessage): turned
	commented out print statement into DebugAdvisory()

	* configSymbol.cc (ruleRewrite): turned commented out print statement
	into DebugAdvisory()

2018-05-29  Steven Eker  <eker@install.csl.sri.com>

	* objectSystemRewritingContext.hh (RewritingContext): added decl
	for externalRewrite()

	* objectSystemRewritingContext.cc (externalRewrite): added

2018-05-24  Steven Eker  <eker@install.csl.sri.com>

	* pseudoThread.hh (P): added NOTHING_HAPPENED to enum ReturnStatus
	(P): updated decl for eventLoop()

	* pseudoThread.cc (processFds): support wait = 0 for non-blocking
	poll of active file descriptors
	(eventLoop): take block argument

===================================Maude117===========================================

2017-08-18  Steven Eker  <eker@install.csl.sri.com>

	* configSymbol.cc (ruleRewrite): added comments to explain
	the tricky tracing code
	(ruleRewrite): fake rewrites when tracing in the single subterm
	case and in the ConfigSymbol went away/not leftOver rules
	case

2017-08-17  Steven Eker  <eker@install.csl.sri.com>

	* configSymbol.cc (ruleRewrite): do tracePostRuleRewrite()
	after successful objMsgRewrite()
	(objMsgRewrite): don't do tracePostRuleRewrite() here
	since we don't have a context with the new dag

===================================Maude115===========================================

2017-08-02  Steven Eker  <eker@install.csl.sri.com>

	* fileManagerSymbol.hh (ExternalObjectManagerSymbol): updated
	decl for getOpenFile()

	* fileActions.cc (write, flush, getLine, getChars, getPosition)
	(setPosition, closeFile): deleted no open file object advisory
	since this should be able to happen
	(getOpenFile): added a CantHappen()
	(getOpenFile): rewritten to use Asserts()
	(write, flush, getLine, getChars, getPosition, setPosition)
	(closeFile, cleanUp): use new getOpenFile() convention

2017-08-01  Steven Eker  <eker@install.csl.sri.com>

	* fileSignature.cc: deleted stdinSymbol, stdoutSymbol,
	stderrSymbol

	* fileActions.cc (getLine): added comment about EOF case
	(getLine): don't handle STDIN_FILENO
	(openFile): don't handle stdin/stdout/stderr
	(write): don't handle STDOUT_FILENO/STDERR_FILENO
	(flush): don't handle STDOUT_FILENO/STDERR_FILENO
	(getPosition): don't check STD_STREAM()
	(setPosition): don't check STD_STREAM()
	(closeFile): don't check STD_STREAM()
	(cleanUp): don't check STD_STREAM()

2017-07-31  Steven Eker  <eker@install.csl.sri.com>

	* streamManagerSymbol.cc (write): flush cout
	(getLine): implemented
	(gotLineReply): added

2017-07-28  Steven Eker  <eker@install.csl.sri.com>

	* streamManagerSymbol.cc: created

	* streamSignature.cc: created

	* fileSignature.cc: deleted unboundedSymbol

	* streamManagerSymbol.hh: created

2017-07-27  Steven Eker  <eker@install.csl.sri.com>

	* fileActions.cc (openFile): handle stdin
	(getLine): handle stdin

2017-07-26  Steven Eker  <eker@install.csl.sri.com>

	* fileActions.cc (cleanUp): don't close standard streams
	(closeFile): don't close standard streams
	(setPosition): don't fseek() in standard streams
	(getPosition): don't ftell() in standard streams
	(flush): handle stdout, stderr

	* fileSignature.cc: added stdin, stdout, stderr

	* fileActions.cc (write): handle stdout, stderr
	(openFile): handle stdout, stderr

	* fileManagerSymbol.hh (ExternalObjectManagerSymbol): deleted
	decls for  wroteMsgReply(), flushedReply(), closedFileReply()

	* fileOutcomes.cc (flushedReply, closedFileReply, wroteMsgReply): deleted

	* fileActions.cc (write): use trivialReply() instead of
	wroteMsgReply()
	(flush): use trivialReply() instead of flushedReply()
	(closeFile): use trivialReply() instead of closedFileReply()

2017-07-25  Steven Eker  <eker@install.csl.sri.com>

	* fileActions.cc (getLine): do seek if lastOpWasWrite
	(getChars): do seek if lastOpWasWrite
	(setPosition): clear lastOpWasWrite

	* fileManagerSymbol.hh (ExternalObjectManagerSymbol): added
	decl for checkModeExt()

	* fileActions.cc (checkModeExt): added
	(getMode): use checkModeExt()

	* fileManagerSymbol.hh (ExternalObjectManagerSymbol): added
	decl for getMode()

	* fileActions.cc (setPosition): use
	MinusSymbol::getSignedInt64()
	(getChars): no need to check for -ve nr chars to read
	(getMode): added
	(openFile): use getMode

	* fileSignature.cc: added minusSymbol

	* fileManagerSymbol.cc (handleMessage): handle
	setPositionMsg

	* fileManagerSymbol.hh (ExternalObjectManagerSymbol): added
	decls for getBase(), setPosition()

	* externalObjectManagerSymbol.cc (trivialReply): added

	* externalObjectManagerSymbol.hh (FreeSymbol): added decl
	for trivialReply

	* fileActions.cc (getBase, setPosition): added

	* fileSignature.cc: added startSymbol, currentSymbol,
	endSymbol

2017-07-24  Steven Eker  <eker@install.csl.sri.com>

	* fileManagerSymbol.cc (handleMessage): handle
	getPositionMsg

	* fileManagerSymbol.hh (ExternalObjectManagerSymbol): added
	decls for getPosition(), positionGotReply()

	* fileOutcomes.cc (positionGotReply): added

	* fileActions.cc (getPosition): added

2017-07-21  Steven Eker  <eker@install.csl.sri.com>

	* fileManagerSymbol.cc (handleMessage): handle getChars
	message

	* fileManagerSymbol.hh (ExternalObjectManagerSymbol): added
	decls for getChars(), gotCharsReply()

	* fileActions.cc (getChars): added

	* fileOutcomes.cc (gotCharsReply): added

	* fileActions.cc (closeFile): call deleteExternalObject()

	* fileStuff.cc: becomes fileActions.cc

	* fileManagerSymbol.hh (ExternalObjectManagerSymbol): added
	decls for getLine(), gotLineReply()

	* fileOutcomes.cc (gotLineReply): added

	* fileStuff.cc (getLine): added

	* fileManagerSymbol.cc (handleMessage): handle getLineMsg

2017-07-20  Steven Eker  <eker@install.csl.sri.com>

	* fileManagerSymbol.hh (ExternalObjectManagerSymbol): added
	decls for flush(), flushedReply()

	* fileOutcomes.cc (flushedReply): added

	* fileStuff.cc (cleanUp): implemented
	(flush): added

	* fileManagerSymbol.cc (handleMessage): handle flushMsg

	* fileStuff.cc (closeFile): added

	* fileOutcomes.cc (closeFileReply): added

	* fileManagerSymbol.cc (handleMessage): handle writeMsg,
	closeFileMsg

	* socketStuff.cc (getActiveSocket): remove duplicate call
	to find()

	* fileManagerSymbol.hh (ExternalObjectManagerSymbol): added
	decls for getOpenFile(), getText(), write(), wroteMsgReply()

	* fileOutcomes.cc (wroteMsgReply): added

	* fileStuff.cc (getOpenFile): added
	(write): added
	(getText): added

	* fileManagerSymbol.hh (ExternalObjectManagerSymbol): added
	struct OpenFile, typedef FileMap, data member openFiles

	* fileOutcomes.cc (openedFile): added

	* fileManagerSymbol.hh (ExternalObjectManagerSymbol): added
	decls for openFile(), errorReply()

	* fileStuff.cc: created

	* fileOutcomes.cc: created

2017-07-19  Steven Eker  <eker@install.csl.sri.com>

	* fileSignature.cc: added flushMsg, flushedMsg

2017-07-18  Steven Eker  <eker@install.csl.sri.com>

	* fileManagerSymbol.cc: created

	* socketManagerSymbol.cc: code cleaning

	* fileManagerSymbol.hh: created

	* fileSignature.cc: created

===================================Maude115===========================================

2015-12-24  Steven Eker  <eker@ape.csl.sri.com>

	* objectMap.cc (dagNodeLt): made dagNodeLt::operator() const

	* configSymbol.hh (ACU_Symbol): made symbolLt::operator() const

	* objectSystemRewritingContext.hh (RewritingContext): made
	dagNodeLt::operator() const

2015-12-18  Steven Eker  <eker@ape.csl.sri.com>

	* socketStuff.cc (createClientTcpSocket): use
	makeZeroTerminatedString()
	(send): use empty()
	(send): use makeZeroTerminatedString() member function
	(send): use length() rather than size()

	* socketOutcomes.cc (receivedMsgReply): crope -> Rope

	* socketStuff.cc: crope -> Rope

	* socketManagerSymbol.hh: crope -> Rope

===================================Maude108a===========================================

2014-02-06  Steven Eker  <eker@ape.csl.sri.com>

	* pseudoThread.cc (processCallBacks): added comment
	(eventLoop): fix a bug where we were putting wait in a shadowing
	variable

===================================Maude100a===========================================

2012-11-09  Steven Eker  <eker@ape.csl.sri.com>

	* pseudoThread.cc (processFds): update idea of time after poll() call
	(eventLoop): rewritten so we can never return 0; we loop until we
	handle an event, get interrupted or there are no pending call backs

	* pseudoThread.hh (P): added comments explaining the arguments to
	public member functions; removed default argument value for
	requestCallBack()
	(CallBackRequest, <): moved out of class declaration

2012-11-08  Steven Eker  <eker@ape.csl.sri.com>

	* pseudoThread.cc (processFds): fix bugs where we were writing
	wrong thing into info.flags in POLLIN and POLLOUT cases; code
	cleaning

2012-10-19  Steven Eker  <eker@ape.csl.sri.com>

	* socketManagerSymbol.hh (PseudoThread): updated decl for
	getActiveSocket()

	* socketStuff.cc (getActiveSocket): pass back pointer to
	ActiveSocket object
	(acceptClient): use ActiveSocket pointer
	(send): use ActiveSocket pointer
	(receive): use ActiveSocket pointer
	(closeSocket, cleanUp): pass extra argument to getActiveSocket

	* socketOutcomes.cc (acceptedClientReply): don't set state here

	* socketStuff.cc (acceptClient): set state on new accept socket here

	* socketAsync.cc (doWrite): set state after call to createdSocketReply()
	(doRead): set state on new accept socket here

	* socketOutcomes.cc (createdSocketReply): don't set state here

	* socketStuff.cc (createServerTcpSocket): changed comment on line
	that sets state
	(createClientTcpSocket): set state here rather than rely on
	createdSocketReply()

	* socketAsync.cc (doRead): commented out superfluous access of
	activeSockets

2012-10-16  Steven Eker  <eker@ape.csl.sri.com>

	* socketManagerSymbol.cc (ActiveSocket): added in order to fix a
	bug that we were implicitly deleting (via map) ActiveSockets with
	an uninitialized textArray field

	* socketManagerSymbol.hh (PseudoThread): added decl for explicit
	ActiveSocket ctor

===================================Maude96b===========================================

2011-12-31  Steven Eker  <eker@rho>

	* socketManagerSymbol.cc (ActiveSocket): added

	* socketManagerSymbol.hh (class SocketManagerSymbol): replace text with textArray in struct
	ActiveSocket

	* socketStuff.cc (SocketManagerSymbol::send): fix bug where we were extracting a c_str() from
	a rope that then went out of scope, potentially before we were finished with the const char*
	from c_str()
	(SocketManagerSymbol::send): check errno == EWOULDBLOCK for POSIX compliance

===================================Maude95c===========================================

2009-01-29  Steven Eker  <eker@goo.csl.sri.com>

	* socketManagerSymbol.cc (attachData, attachSymbol, copyAttachments)
	(getDataAttachments, getSymbolAttachments): call
	ExternalObjectManagerSymbol functions rather the FreeSymbol
	functions

===================================Maude92===========================================

2008-09-11  Steven Eker  <eker@goo.csl.sri.com>

	* socketAsync.cc (doError, doWrite): added #ifdef NO_ASSERT to
	avoid compiler warning

	* socketStuff.cc (createClientTcpSocket): delete decl of unused
	domain variable

===================================Maude91a===========================================

2005-04-29  Steven Eker  <eker@goo.csl.sri.com>

	* socketStuff.cc (createClientTcpSocket, createServerTcpSocket)
	(acceptClient, send, receive, closeSocket): most DebugAdvisory()s
	turned into IssueAdvisory()s

2005-04-15  Steven Eker  <eker@goo.csl.sri.com>

	* socketStuff.cc (receive): added extra DebugAdvisory()

===================================Maude86a===========================================

2005-03-15  Steven Eker  <eker@goo.csl.sri.com>

	* socketStuff.cc (createServerTcpSocket): set SO_REUSEADDR flag

2005-03-14  Steven Eker  <eker@goo.csl.sri.com>

	* socketStuff.cc (createServerTcpSocket): make DebugAdvisory()
	more elaborate

	* objectSystemRewritingContext.cc (ObjectSystemRewritingContext):
	added DebugAdvisory() to check for server sockets not being closed
	after ^C

===================================Maude86===========================================

2004-12-23  Steven Eker  <eker@goo.csl.sri.com>

	* socketAsync.cc (doError): use getsockopt() for more accurate
	error message

	* socketStuff.cc (send): don't accept 0 length sends
	(send): don't accept send unless socket is in a suitable state
	(receive): don't accept receive unless socket is in a suitable
	state

2004-12-22  Steven Eker  <eker@goo.csl.sri.com>

	* socketAsync.cc (doWrite): new closedSocketReply() convention
	(doRead): new closedSocketReply() convention
	(doError): new closedSocketReply() convention
	(doHungUp): new closedSocketReply() convention

	* socketStuff.cc (getDomain): deleted
	(send): new closedSocketReply() convention
	(receive): new closedSocketReply() convention

	* socketManagerSymbol.hh (class SocketManagerSymbol): updated decl
	for closedSocketReply()
	(class SocketManagerSymbol): deleted decl for getDomain()

	* socketOutcomes.cc (closedSocketReply): handle errorMessage arg

	* socketStuff.cc (createClientTcpSocket): new message format
	(createServerTcpSocket): new message format, check that backlog > 0

	* socketSignature.cc: updated decls for createClientTcpSocketMsg,
	createServer, TcpSocketMsg, receiveMsg, closedSocketMsg

	* socketAsync.cc (doRead): handle accept case

	* socketStuff.cc (createClientTcpSocket): use setonblockingFlag()
	(createServerTcpSocket): use setNonblockingFlag()
	(acceptClient): use setNonblockingFlag()

	* socketManagerSymbol.hh (class SocketManagerSymbol): added decl
	for setNonblockingFlag()

	* socketStuff.cc (setNonblockingFlag): added

	* socketManagerSymbol.hh (class SocketManagerSymbol): added decl
	for acceptedClientReply()

	* socketOutcomes.cc (acceptedClientReply): added

2004-12-21  Steven Eker  <eker@goo.csl.sri.com>

	* socketStuff.cc (acceptClient): implemented

	* socketSignature.cc (MACRO): updated decls for
	createServerTcpSocketMsg and acceptedClientMsg

	* socketManagerSymbol.hh (class SocketManagerSymbol): added
	LISTENING and WAITING_TO_ACCEPT to enum SocketState

	* socketStuff.cc (createServerTcpSocket): implemented

	* socketAsync.cc (doError): implemented
	(doHungUp): implemented

	* socketStuff.cc (cleanUp): call PseudoThread::clearFlags()

2004-12-20  Steven Eker  <eker@goo.csl.sri.com>DebugAdvisory()

	* socketStuff.cc (receive): handle async read
	(send): hande async write
	(createClientTcpSocket): allow nonblocking sockets

	* socketAsync.cc (doWrite): handle async write

	* socketManagerSymbol.hh (class SocketManagerSymbol): added decl
	for sentMsgReply()

	* socketOutcomes.cc (sentMsgReply): added

	* socketManagerSymbol.hh (class SocketManagerSymbol): added text,
	unsent and nrUnsent members to struct ActiveSocket

	* socketAsync.cc (doRead): handle error and zero byte cases by
	closing socket

	* socketStuff.cc (receive): use strerror() in place of
	sys_errlist[]
	(createClientTcpSocket): DebugAdvisory() for unexpected connect()
	error
	(createClientTcpSocket): added DebugAdvisory() for declined
	message
	(closeSocket): added DebugAdvisory() for declined message
	(receive): added DebugAdvisory() for declined message
	(send): added DebugAdvisory() for declined message
	(acceptClient, createServerTcpSocket): added DebugAdvisory() for
	declined message
	(createClientTcpSocket): added more DebugAdvisory()s

2004-12-17  Steven Eker  <eker@goo.csl.sri.com>

	* socketStuff.cc (receive): handle interrupts during read()
	(receive): treat unrecognized error messages as a far end close

	* socketAsync.cc (doRead): implemented

	* socketStuff.cc (receive): use closedSocketReply()
	(closeSocket): use closedSocketReply()

	* socketOutcomes.cc (closedSocketReply): added

	* socketManagerSymbol.hh (class SocketManagerSymbol): added enum Sizes

	* socketStuff.cc (receive): use receivedMsgReply()

	* socketManagerSymbol.hh (class SocketManagerSymbol): added decl
	for receivedMsgReply()

	* socketOutcomes.cc (receivedMsgReply): added

	* socketManagerSymbol.hh (class SocketManagerSymbol): added
	NOMINAL, WAITING_TO_READ, WAITING_TO_WRITE to enum SocketState,
	removed READY_TO_SEND

2004-12-16  Steven Eker  <eker@goo.csl.sri.com>

	* socketAsync.cc (doWrite): handle async connects

	* socketManagerSymbol.hh (class SocketManagerSymbol): added
	WAITING_TO_CONNECT to enum SocketState

	* socketAsync.cc (doRead, doWrite, doError, doHungUp): moved here

	* socketStuff.cc (createClientTcpSocket): use createdSocketReply()
	(createClientTcpSocket): don't accept badly formed messages

	* socketManagerSymbol.hh (class SocketManagerSymbol): added decl
	for createdSocketReply()

	* socketOutcomes.cc (errorReply): moved here
	(createdSocketReply): addded

	* socketManagerSymbol.hh (class SocketManagerSymbol): added
	lastMessage and context fields to struct ActiveSocket

2004-12-06  Steven Eker  <eker@goo.csl.sri.com>

	* socketStuff.cc: include netinet/in.h

2004-10-08  Steven Eker  <eker@goo.csl.sri.com>

	* pseudoThread.cc: added #include <errno.h>

2004-08-03  Steven Eker  <eker@goo.csl.sri.com>

	* configSymbol.cc (ruleRewrite): only do external stuff if mode is
	external; put check for incoming external messages in second loop
	rather than first

	* socketManagerSymbol.hh (class SocketManagerSymbol): added decl
	for 2nd closeSocket()

	* socketStuff.cc (closeSocket): added 2nd version
	(closeSocket): use other closeSocket()
	(receive): handle far end closed

2004-08-02  Steven Eker  <eker@goo.csl.sri.com>

	* objectSystemRewritingContext.cc (~ObjectSystemRewritingContext):
	added

	* objectSystemRewritingContext.hh (class
	ObjectSystemRewritingContext): adde decl for dtor

	* socketManagerSymbol.hh (class SocketManagerSymbol): added decl
	for cleanUp()

	* socketStuff.cc (closeSocket): erase closed socket from
	activeSockets

	* externalObjectManagerSymbol.hh (class
	ExternalObjectManagerSymbol): added decl for cleanUp()

	* socketStuff.cc (closeSocket): fixed bug where we were sending
	back sentMsg

2004-07-30  Steven Eker  <eker@goo.csl.sri.com>

	* objectSystemRewritingContext.cc (getExternalMessages): added
	(offerMessageExternally): added

	* objectSystemRewritingContext.hh (class
	ObjectSystemRewritingContext): added decls for
	getExternalMessages() and offerMessageExternally()

	* configSymbol.cc (ruleRewrite): call getExternalMessages() and
	offerMessageExternally()

	* objectSystem.hh: added ExternalObjectManagerSymbol

	* socketStuff.cc (closeSocket): use deleteExternalObject()
	(createClientTcpSocket): use addExternalObject()

	* objectSystemRewritingContext.hh (class
	ObjectSystemRewritingContext): added decls for
	addExternalObject(), deleteExternalObject()

	* objectSystemRewritingContext.cc (markReachableNodes): rewritten
	(addExternalObject): added
	(deleteExternalObject): added

	* objectSystemRewritingContext.hh (class
	ObjectSystemRewritingContext): turned class MessageMap into a typedef
	(class ObjectSystemRewritingContext): added typedef for ObjectSet
	and data member externalObjects; added decl for
	markReachableNodes(); messageMap becomes incomingMessages

2004-07-29  Steven Eker  <eker@goo.csl.sri.com>

	* objectSystemRewritingContext.cc (markReachableNodes): added

	* objectSystemRewritingContext.hh (class
	ObjectSystemRewritingContext): added class MessageMap and
	dagNodeLt()

	* objectSystemRewritingContext.cc: created

	* externalObjectManagerSymbol.hh (class
	ExternalObjectManagerSymbol): updated decls for use
	ObjectSystemRewritingContext&

	* socketStuff.cc (errorReply): implemented

	* objectSystemRewritingContext.hh (class
	ObjectSystemRewritingContext): added deck for bufferMessage()
	(bufferMessage): added stub

	* socketManagerSymbol.hh (class SocketManagerSymbol): updated many
	declarations

	* socketStuff.cc (createClientTcpSocket): take
	ObjectSystemRewritingContext&
	(createServerTcpSocket): take ObjectSystemRewritingContext&
	(acceptClient): take ObjectSystemRewritingContext&
	(send): take ObjectSystemRewritingContext&
	(receive): take ObjectSystemRewritingContext&
	(closeSocket): take ObjectSystemRewritingContext&

	* socketManagerSymbol.cc (handleManagerMessage): take
	ObjectSystemRewritingContext&
	(handleMessage): take ObjectSystemRewritingContext&

2004-07-28  Steven Eker  <eker@goo.csl.sri.com>

	* socketManagerSymbol.hh (class SocketManagerSymbol): added decls
	for getText() and getActiveSocket()

	* socketStuff.cc (getActiveSocket): added
	(getText): added

2004-07-23  Steven Eker  <eker@goo.csl.sri.com>

	* pseudoThread.cc (doCallBack): added

	* socketManagerSymbol.hh (class SocketManagerSymbol): derive from
	PseudoThread
	(class SocketManagerSymbol): added enum SocketState, struct
	ActiveSocket, typedef SocketMap, data member activeSockets

	* socketStuff.cc (getDomain): added

	* pseudoThread.cc (processCallBacks): rewritten

	* pseudoThread.hh (class PseudoThread): updated decls for
	processCallBacks() and processFds()

	* pseudoThread.cc (eventLoop): rewritten
	(processFds): rewritten

	* pseudoThread.hh (class PseudoThread): added enum ReturnStatus;
	updated decl for eventLoop()

2004-07-21  Steven Eker  <eker@goo.csl.sri.com>

	* pseudoThread.hh: created

	* pseudoThread.cc: created

2004-07-14  Steven Eker  <eker@goo.csl.sri.com>

	* socketManagerSymbol.hh (class SocketManagerSymbol): added decls
	for getProtocol(), getPort(), errorReply()

	* socketManagerSymbol.cc (handleManagerMessage): added

	* externalObjectManagerSymbol.hh (class
	ExternalObjectManagerSymbol): added decl for handleManangerMessage()

	* socketManagerSymbol.hh (class SocketManagerSymbol): added decls
	for createClientTcpSocket(), createServerTcpSocket(),
	acceptClient(), send(), receive(), closeSocket()

	* socketStuff.cc: created

	* socketManagerSymbol.cc (handleMessage): added

	* socketManagerSymbol.hh (class SocketManagerSymbol): derive from
	ExternalObjectManagerSymbol

	* socketManagerSymbol.cc (SocketManagerSymbol): call
	ExternalObjectManagerSymbol()

	* externalObjectManagerSymbol.cc: created

	* externalObjectManagerSymbol.hh: created

2004-07-13  Steven Eker  <eker@goo.csl.sri.com>

	* socketManagerSymbol.hh (class SocketManagerSymbol): added decls
	for getDataAttachments() and getSymbolAttachments()

	* socketManagerSymbol.cc (getDataAttachments): added
	(getSymbolAttachments): added

2004-07-12  Steven Eker  <eker@goo.csl.sri.com>

	* socketManagerSymbol.cc (attachTerm): deleted
	(copyAttachments): added

	* socketManagerSymbol.hh (class SocketManagerSymbol): deleted decl
	for attachTerm(); added decl for copyAttachments()

	* socketManagerSymbol.cc (SocketManagerSymbol): use
	socketSignature.cc
	(attachSymbol): use socketSignature.cc
	(attachData): use NULL_DATA()
	(attachSymbol): use BIND_SYMBOL()

	* socketManagerSymbol.hh (MACRO): use socketSignature.cc

	* socketSignature.cc: created

	* objectSystem.hh: deleted class ExternalObjectManager

	* socketManager.cc: deleted

	* socketManager.hh: deleted

	* externalObjectManager.cc: deleted

	* externalObjectManager.hh: deleted

2004-07-09  Steven Eker  <eker@goo.csl.sri.com>

	* socketManagerSymbol.cc: created

	* socketManagerSymbol.hh: created

2004-07-07  Steven Eker  <eker@goo.csl.sri.com>

	* socketManager.cc: created

	* socketManager.hh: created

	* objectSystem.hh: added class ExternalObjectManager

2004-06-30  Steven Eker  <eker@goo.csl.sri.com>

	* externalObjectManager.cc: created

	* externalObjectManager.hh: created
	
===================================Maude84d===========================================

2003-05-23  Steven Eker  <eker@goo.csl.sri.com>

	* configSymbol.cc (compileRules): use isNonexec(); no longer check
	for unbound variables
	(ruleRewrite): added a call to tracePreRuleRewrite()

2003-05-21  Steven Eker  <eker@goo.csl.sri.com>

	* configSymbol.cc (ruleRewrite): use leftOverRewrite()

	* configSymbol.hh (class ConfigSymbol): added decl for
	leftOverRewrite()

	* configSymbol.cc (resetRules): added
	(compileRules): fill out leftOver
	(objMsgRewrite): attempt rule fairness
	(compileRules): only put rule that have no unbound variables in
	leftOver
	(leftOverRewrite): added

	* configSymbol.hh (class ConfigSymbol): added decl for resetRules()

	* configSymbol.cc (checkArgs): chech that object and message
	patterns are stable
	(compileRules): fill out ruleMap
	(objMsgRewrite): take messageSymbol arg
	(ruleRewrite): use new objMsgRewrite() semantics

	* configSymbol.hh (class ConfigSymbol): added struct symbolLt and
	struct RuleSet, typedef RuleMap and data members ruleMap and
	leftOvers; deleted data member objMsgRules

	* configSymbol.cc (ConfigSymbol): don't init mode
	(ruleRewrite): use ObjectSystemRewritingContext

	* configSymbol.hh (class ConfigSymbol): delete enum Mode, data
	memeber mode and decl for setMode();
	(setMode): deleted
	(class ConfigSymbol): deleted struct AutomatonPair

	* objectSystem.hh: added class ObjectSystemRewritingContext

	* objectSystemRewritingContext.hh (class
	ObjectSystemRewritingContext): created

2003-05-20  Steven Eker  <eker@goo.csl.sri.com>

	* configSymbol.cc (objMsgRewrite): use objMsgRules
	(compileRules): use objMsgRules
	(ruleRewrite): handle mode
	(ruleRewrite): rewrote obj-msg recognition loop; use Asserts()
	that DagArgumentIterators are valid; handle duplicate object more
	gracefully

	* configSymbol.hh (class ConfigSymbol): dleted data member
	automatonPairs; added data members mode and objMsgRules

2003-05-19  Steven Eker  <eker@goo.csl.sri.com>

	* configSymbol.cc (ruleRewrite): rewritten using objMsgRewrite()
	and retrieveObject()

	* configSymbol.hh (class ConfigSymbol): added decls for
	objMsgRewrite() and retrieveObject()
	(class ConfigSymbol): added enum Mode

	* configSymbol.cc (objMsgRewrite): added
	(retrieveObject): added

	* remainder.cc: created

	* configSymbol.cc (ConfigSymbol): pass useTree = false to
	ACU_Symbol()

	* objectMap.cc: moved ObjectMap decls here
	(dump): added

	* configSymbol.cc (markReachableNodes): use FOR_EACH_CONST()
	(markReachableNodes): use FOR_EACH_CONST()

===================================Maude80a===========================================

2003-02-25  Steven Eker  <eker@goo.csl.sri.com>

	* configSymbol.cc: removed #pragma
	(checkArgs): updated Assert()

	* configSymbol.hh: removed #pragma
	
===================================Maude79===========================================

2001-04-20  Steven Eker  <eker@goo.csl.sri.com>

	* configSymbol.hh (class ConfigSymbol): added struct MessageQueue,
	struct dagNodeLt, class ObjectMap
	(class ConfigSymbol): added struct AutomatonPair and data member
	automatonPairs

	* configSymbol.cc (checkArgs): added

2001-04-17  Steven Eker  <eker@goo.csl.sri.com>

	* configSymbol.hh: created

	* objectSystem.hh: created

