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util: Don't expand meta_*() debug log arguments if topic not enabled

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It's pointless to call into functions that produce information that will
end up nowhere, so lets not. This will generate less angst when doing
more intense data gathering and string generation in debug log calls.

https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1467
This commit is contained in:
Jonas Ådahl
2020-10-02 19:30:58 +02:00
committed by verdre
parent f79d40077e
commit 43c6f70605
2 changed files with 31 additions and 5 deletions
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16
src/core/util.c
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@ -285,6 +285,18 @@ topic_name (MetaDebugTopic topic)
static int sync_count = 0;
gboolean
meta_is_topic_enabled (MetaDebugTopic topic)
{
if (verbose_topics == 0)
return FALSE;
if (topic == META_DEBUG_VERBOSE && verbose_topics != META_DEBUG_VERBOSE)
return FALSE;
return !!(verbose_topics & topic);
}
static void
meta_topic_real_valist (MetaDebugTopic topic,
const char *format,
@ -295,9 +307,7 @@ meta_topic_real_valist (MetaDebugTopic topic,
g_return_if_fail (format != NULL);
if (verbose_topics == 0
|| (topic == META_DEBUG_VERBOSE && verbose_topics != META_DEBUG_VERBOSE)
|| (!(verbose_topics & topic)))
if (!meta_is_topic_enabled (topic))
return;
str = g_strdup_vprintf (format, args);