cleanups to debug-print, try harder to make it work during GC -------------------- ChangeLog entries follow: -------------------- src/ChangeLog addition: 2010-02-08 Ben Wing <ben@xemacs.org> * emacs.c: * emacs.c (assert_failed): Fix comments about when inhibit_non_essential_printing_operations is set and how used. Increment/decrement in assert_failed rather than just setting/resetting to avoid hosing things in case we're called when the value is already non-zero. Similarly increment/ decrement in_assert_failed. * gc.c (gc_prepare): * gc.c (gc_finish): Increment/decrement inhibit_non_essential_printing_operations rather than setting/resetting. * print.c: * print.c (debug_out): * print.c (write_string_to_alternate_debugging_output): * print.c (restore_inhibit_non_essential_conversion_operations): * print.c (debug_print_exit): * print.c (debug_print_enter): * print.c (debug_prin1): * print.c (debug_p4): * print.c (ext_print_begin): * print.c (ext_print_end): * print.c (external_debug_print): * print.c (debug_p3): * print.c (debug_backtrace): * print.c (debug_short_backtrace): * print.c (vars_of_print): Lots of cleanup. Fix debug_out() so it binds inhibit_non_essential_printing_operations around it to ensure no conversion. Remove many other places that set the same var since the lower-level functions now all do it. A few other places, add inhibit_non_essential_printing_operations bindings.Extract the code out that sets up and resets lots of bindings in debug_prin1() so that debug_backtrace() can use it, and rewrite it to use the new STORE_VOID_IN_LISP() rather than having to have a single static opaque structure holding all the bindings (and not handling reentrancy). Fix raw `char' to be `CIbyte' in the declaration of `alternate_do_string'. * signal.c (check_what_happened): Fix bug: Don't try to check for QUIT when inhibit_non_essential_printing_operations or we may screw things up if QUIT happens during debug printing.

;;; Example of Sending Messages

(defun tooltalk-random-query-handler (msg pat)
  (let ((state (get-tooltalk-message-attribute msg 'state)))
    (cond
      ((eq state 'TT_HANDLED)
       (message (get-tooltalk-message-attribute msg arg_val 0)))
      ((memq state '(TT_FAILED TT_REJECTED))
       (message "Random query turns up nothing")))))

(setq random-query-message
  '(   class TT_REQUEST
       scope TT_SESSION
     address TT_PROCEDURE
	  op "random-query"
        args ((TT_INOUT "?" "string"))
    callback tooltalk-random-query-handler))

(let ((m (make-tooltalk-message random-query-message)))
      (send-tooltalk-message m))

;;; Example of Receiving Messaegs

(defun tooltalk-display-string-handler (msg pat)
  (return-tooltalk-message msg 'reply)
  (describe-tooltalk-message msg)
  (message (get-tooltalk-message-attribute msg 'arg_val 0)))

(setq display-string-pattern
  '(category TT_HANDLE
       scope TT_SESSION
	  op "emacs-eval"
	args ((TT_IN "filename" "string"))
    callback tooltalk-display-string-handler))

(let ((p (make-tooltalk-pattern display-string-pattern)))
  (register-tooltalk-pattern p))