[gstreamer-bugs] [Bug 517231] threadsafe/colored windows logging

GStreamer (bugzilla.gnome.org) bugzilla-daemon at bugzilla.gnome.org
Tue Apr 7 11:19:37 PDT 2009

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  GStreamer | gstreamer (core) | Ver: git

------- Comment #11 from LRN  2009-04-07 18:20 UTC -------
Another option is to use WriteConsoleOutput() function, which takes combined
character and attribute (color) data. But there is one problem with it - it
won't change the cursor position. So we'll have to change it manually. Which
means calling GetConsoleCursorInfo() to get current cursor position and
SetConsoleCursorPosition() to change it.

It's still not thread-safe. On the other hand, if we DO use locking, this
solution offers shortest locktime, because character/color buffer is prepared
outside of lock, function locks only to write data into the console and move
the cursor, which should be faster than writing a string and changing color
attribute a few times (current solution) or writing one string and then setting
console attributes a few times (the FillConsoleOutputAttribute solution).

FillConsoleOutputAttribute has an advantage of writing meaningful text data in
both implementations (with or without locking), because the presence of a lock
only affects the way it colorizes text (it may colorize wrong characters in
concurrent mode, but at least text will be intact).

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