Changes between Version 24 and Version 25 of WebKitGTK/Debugging

Timestamp:

Mar 25, 2020, 6:16:40 AM (5 years ago)

Author:

Philippe Normand

Comment:

--

WebKitGTK/Debugging

@@ -104 +104 @@
  * Notice also the ''DISABLE_NI_WARNING'' env variable referred there.
 
-It is important to export the ''WEBKIT_DEBUG'' env variable because you will want it to affect also the ''WebProcess''.
- * This is an example for turning '''on''' the logging int he ''Network'' channel. Notice that the channels are case insensitive.
+It is important to export the ''WEBKIT_DEBUG'' env variable because you will want it to affect also the ''WebProcess''. Known log levels associated to log channels are in this order: ''error'', ''warning'', ''info'', ''debug''. So if you enable debug for a specific channel, you will also get the logs for the preceding levels (error, warning, info).
+
+ * This is an example for turning '''on''' the logging int he ''Network'' and ''Media'' channels:
 {{{
 #!sh
-$ export WEBKIT_DEBUG="network"
+$ export WEBKIT_DEBUG="Network=debug,Media=debug"
 $ Tools/Scripts/run-minibrowser --gtk
 }}}
+
+To watch the logs, use `journalctl` like in this example:
+{{{
+#!sh
+$ journalctl -f WEBKIT_SUBSYSTEM=WebKitGTK WEBKIT_CHANNEL=Media
+}}}
+
 
 It is also possible to turn '''on''' the logging and other output/behaviors support in a ''Release'' build by setting the proper C Macros. You may want to check the [http://trac.webkit.org/browser/trunk/Source/WTF/wtf/Assertions.h Source/WTF/wtf/Assertions.h] header.