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winsup/cygwin ChangeLog cygheap.h dt ...

CVSROOT:	/cvs/uberbaum
Module name:	winsup
Changes by:	2009-06-30 21:18:44

Modified files:
	cygwin         : ChangeLog cygheap.h dtable.h 
Added files:
	cygwin         : select.h 

Log message:
	* select.h: New file split from fhandler.h.
	(select_record::select_record): Define do-nothing constructor for "new" to
	avoid gratuitous zeroing.
	(select_info): New base class.
	(select_pipe_info): New class with methods for dealing with pipes.
	(select_socket_info): New class with methods for dealing with sockets.
	(select_serial_info): Dummy class for serial.
	(select_mailslot_info): Dummy class for mailslots.
	(select_stuff): Define device_specific_* as actual classes rather than void *.
	* dtable.h (dtable::select_read): Accommodate return value change to 'bool' and
	argument change to "select_stuff".
	(dtable::select_write): Ditto.
	(dtable::select_except): Ditto.
	* (dtable::select_read): Accommodate return value change to 'bool'
	and argument change to "select_stuff".
	(dtable::select_write): Ditto.
	(dtable::select_except): Ditto.
	* fhandler.h: Excise select-related classes.
	(fhandler_*::select_read): Change argument to select_stuff.
	(fhandler_*::select_write): Ditto.
	(fhandler_*::select_except): Ditto.
	* (UNIX_FD_ZERO): Use memset rather than bzero.
	(select_stuff::test_and_set): Change return type to bool.  Allocate
	select_record on entry and let fhandler_*::select_* operate on the
	field of select_stuff.
	(pipeinf): Delete.
	(select_pipe_info::select_pipe_info): New constructor.  Allocates event for
	controlling pipe waits.
	(select_pipe_info::~select_pipe_info): New destructor.  Destroy event.  Stop
	(select_pipe_info::add_watch_handle): New function.
	(thread_pipe): Wait for the hEvent part of any overlapped pipes before peeking.
	(start_thread_pipe): Don't allocate device_specific_pipe stuff here.  Assume
	that it has been allocated earlier.
	(pipe_cleanup): Rely on select_pipe_info destructor to clean up pipe
	(fhandler_*::select_*): Derive select_record from new select_stuff argument.
	(fhandler_pipe::select_*): Ditto.  Allocate pipe-specific field if not already
	(serialinf): Delete.
	(thread_serial): serialinf -> select_serial_info.
	(fhandler_base::ready_for_read): Rewrite to accommodate change in argument to
	(socketinf): Delete.
	(thread_socket): socketinf -> select_socket_info.
	(mailslotinf): Delete.
	(thread_mailslot): mailslotinf -> select_mailslot_info.


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