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initialize tag class circular linked list

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This commit is contained in:
Nikolaj Bjorner 2025-05-28 17:10:23 +01:00
parent a3aee0247a
commit bbb3d5379b
2 changed files with 48 additions and 0 deletions
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31
src/util/trace.cpp
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@ -57,6 +57,37 @@ void finalize_trace() {
g_enabled_trace_tags = nullptr;
}
const TraceTag* get_tag_classes() {
static bool tag_class_init = false; // ignore thread safety assuming TRACE is already under a lock.
if (!tag_class_init) {
// Arrays to track first and last tag in each class
TraceTag first[static_cast<unsigned>(TraceTag::Count)];
TraceTag last[static_cast<unsigned>(TraceTag::Count)];
for (unsigned i = 0; i < static_cast<unsigned>(TraceTag::Count); ++i)
first[i] = last[i] = TraceTag::Count;
// Link tags in each class
for (unsigned i = 0; i < static_cast<unsigned>(TraceTag::Count); ++i) {
TraceTag tag = static_cast<TraceTag>(i);
TraceTag tag_class = get_trace_tag_class(tag);
unsigned cls = static_cast<unsigned>(tag_class);
if (first[cls] == TraceTag::Count)
first[cls] = tag;
else
tag_classes[static_cast<unsigned>(last[cls])] = tag;
last[cls] = tag;
}
// Close the circular list for each class
for (unsigned cls = 0; cls < static_cast<unsigned>(TraceTag::Count); ++cls)
if (last[cls] != TraceTag::Count && first[cls] != TraceTag::Count)
tag_classes[static_cast<unsigned>(last[cls])] = first[cls];
tag_class_init = true;
}
return tag_classes;
}
void enable_trace(const char * tag) {
get_enabled_trace_tags().insert(tag);