From: Daiki Ueno <ueno@unixuser.org>
Date: Mon, 7 Feb 2005 03:16:51 +0000 (+0000)
Subject: * riece-filter.el (riece-filter-semaphore): New variable.
X-Git-Url: https://cgit.sxemacs.org/?p=riece;a=commitdiff_plain;h=aad2c59c3a20df0a8d22f1fae922e2bbebe159b1

* riece-filter.el (riece-filter-semaphore): New variable.
(riece-get-semaphore): New function.
(riece-release-semaphore): New function.
(riece-filter-with-semaphore): New macro.
(riece-filter): Use it.
---

diff --git a/lisp/ChangeLog b/lisp/ChangeLog
index 3a2a008..d742783 100644
--- a/lisp/ChangeLog
+++ b/lisp/ChangeLog
@@ -1,3 +1,11 @@
+2005-02-07  Daiki Ueno  <ueno@unixuser.org>
+
+	* riece-filter.el (riece-filter-semaphore): New variable.
+	(riece-get-semaphore): New function.
+	(riece-release-semaphore): New function.
+	(riece-filter-with-semaphore): New macro.
+	(riece-filter): Use it.
+
 2005-02-06  Daiki Ueno  <ueno@unixuser.org>
 
 	* riece-filter.el (riece-filter): Modified regexp.
diff --git a/lisp/riece-filter.el b/lisp/riece-filter.el
index bb6664b..7fed41d 100644
--- a/lisp/riece-filter.el
+++ b/lisp/riece-filter.el
@@ -30,6 +30,8 @@
 (require 'riece-identity)
 (require 'riece-debug)
 
+(defvar riece-filter-semaphore '(nil))
+
 (defun riece-handle-numeric-reply (prefix number name string)
   (let ((base-number (* (/ number 100) 100))
 	function)
@@ -64,43 +66,64 @@
       (riece-ignore-errors (symbol-name after-hook)
 	(run-hook-with-args-until-success after-hook prefix string)))))
 
-(defun riece-chomp-string (string)
+;;; stolen (and renamed) from gnus-async.el.
+(defun riece-get-semaphore (semaphore)
+  "Wait until SEMAPHORE is released."
+  (while (/= (length (nconc (symbol-value semaphore) (list nil))) 2)
+    (sleep-for 1)))
+
+(defun riece-release-semaphore (semaphore)
+  "Release SEMAPHORE."
+  (setcdr (symbol-value semaphore) nil))
+
+(defmacro riece-filter-with-semaphore (&rest forms)
+  `(unwind-protect
+       (progn
+	 (riece-get-semaphore 'riece-filter-semaphore)
+	 ,@forms)
+     (riece-release-semaphore 'riece-filter-semaphore)))
+
+(put 'riece-filter-with-semaphore 'lisp-indent-function 0)
+(put 'riece-filter-with-semaphore 'edebug-form-spec '(body))
+
+(defsubst riece-chomp-string (string)
   (if (string-match "\r\\'" string)
       (substring string 0 (match-beginning 0))
     string))
 
 (defun riece-filter (process input)
-  (save-excursion
-    (set-buffer (process-buffer process))
-    (goto-char riece-read-point)
-    (unless riece-debug
-      (delete-region (riece-line-beginning-position) (point-min))
-      (setq riece-read-point (point)))
-    (insert input)
-    (goto-char (prog1 riece-read-point
-		 (setq riece-read-point (point))))
-    (beginning-of-line)
-    (while (and (not (eobp))
-		(looking-at ".*\n"))	;the input line is not finished
-      (save-excursion
-	(if (looking-at
-	     ":\\([^ ]+\\) +\\([0-5][0-9][0-9]\\) +\\([^ ]+\\) +\\(.*\\)\n")
-	    (riece-handle-numeric-reply
-	     (match-string 1)		;prefix
-	     (string-to-number (match-string 2)) ;number
-	     (match-string 3)		;name
-	     (riece-chomp-string (match-string 4)))		;reply string
-	  (if (looking-at "\\(:\\([^ ]+\\) +\\)?\\([^ ]+\\) +\\(.*\\)\n")
-	      (riece-handle-message
-	       (match-string 2)		;optional prefix
-	       (match-string 3)		;command
-	       (riece-chomp-string (match-string 4)))	;params & trailing
-	    (if riece-debug
-		(message "Weird message from server: %s"
-			 (buffer-substring (point) (progn
-						     (end-of-line)
-						     (point))))))))
-      (forward-line))))
+  (riece-filter-with-semaphore
+   (save-excursion
+     (set-buffer (process-buffer process))
+     (goto-char riece-read-point)
+     (unless riece-debug
+       (delete-region (riece-line-beginning-position) (point-min))
+       (setq riece-read-point (point)))
+     (insert input)
+     (goto-char (prog1 riece-read-point
+		  (setq riece-read-point (point))))
+     (beginning-of-line)
+     (while (and (not (eobp))
+		 (looking-at ".*\n"))	;the input line is not finished
+       (save-excursion
+	 (if (looking-at
+	      ":\\([^ ]+\\) +\\([0-5][0-9][0-9]\\) +\\([^ ]+\\) +\\(.*\\)\n")
+	     (riece-handle-numeric-reply
+	      (match-string 1)		;prefix
+	      (string-to-number (match-string 2)) ;number
+	      (match-string 3)		;name
+	      (riece-chomp-string (match-string 4))) ;reply string
+	   (if (looking-at "\\(:\\([^ ]+\\) +\\)?\\([^ ]+\\) +\\(.*\\)\n")
+	       (riece-handle-message
+		(match-string 2)	;optional prefix
+		(match-string 3)	;command
+		(riece-chomp-string (match-string 4))) ;params & trailing
+	     (if riece-debug
+		 (message "Weird message from server: %s"
+			  (buffer-substring (point) (progn
+						      (end-of-line)
+						      (point))))))))
+       (forward-line)))))
 
 (eval-when-compile
   (autoload 'riece-exit "riece"))