To test whether the debugging output of class yyy on channel xxx is enabled, use:
TRACE_ON to test if TRACE is enabled
WARN_ON to test if WARN is enabled
FIXME_ON to test if FIXME is enabled
ERR_ON to test if ERR is enabled
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Examples:
if(TRACE_ON(atom)){
...blah...
}
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Note: You should normally need to test only if TRACE_ON. At present, none of the other 3 tests (except for ERR_ON which is used only once!) are used in Wine.