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some cleanup and functionality for tracing

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This commit is contained in:
Nikolaj Bjorner 2025-05-30 14:46:55 +01:00
parent b4c2b455bd
commit 2fc3b0730d
3 changed files with 37 additions and 77 deletions
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66
src/util/trace.cpp
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@ -44,79 +44,85 @@ std::ofstream tout(".z3-trace");
static bool g_enable_all_trace_tags = false;
static bool s_tag_enabled[] = {
#define X(tag, tc, desc) false,
inline unsigned tag2u(TraceTag tag) { return static_cast<unsigned>(tag); }
struct tag_info {
bool is_enabled;
bool is_class;
TraceTag next;
};
static tag_info s_tag_infos[] = {
#define X(tag, tc, desc) { false, false, TraceTag::tag },
#include "util/trace_tags.def"
#undef X
};
bool tag_enabled(TraceTag tag) {
return tag < TraceTag::Count && s_tag_enabled[static_cast<unsigned>(tag)];
return tag < TraceTag::Count && s_tag_infos[tag2u(tag)].is_enabled;
}
static void enable_tag(TraceTag tag) {
if (tag < TraceTag::Count)
s_tag_enabled[static_cast<unsigned>(tag)] = true;
s_tag_infos[tag2u(tag)].is_enabled = true;
}
static void disable_tag(TraceTag tag) {
if (tag < TraceTag::Count)
s_tag_enabled[static_cast<unsigned>(tag)] = false;
s_tag_infos[tag2u(tag)].is_enabled = false;
}
void finalize_trace() {
}
static const TraceTag* get_tag_classes() {
static const tag_info* get_tag_infos() {
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)
for (unsigned i = 0; i < tag2u(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) {
for (unsigned i = 0; i < tag2u(TraceTag::Count); ++i) {
TraceTag tag = static_cast<TraceTag>(i);
TraceTag tag_class = get_trace_tag_class(tag);
unsigned cls = static_cast<unsigned>(tag_class);
s_tag_infos[tag2u(tag_class)].is_class = true;
unsigned cls = tag2u(tag_class);
if (first[cls] == TraceTag::Count)
first[cls] = tag;
else
tag_classes[static_cast<unsigned>(last[cls])] = tag;
s_tag_infos[tag2u(last[cls])].next = tag;
last[cls] = tag;
}
// Close the circular list for each class
for (unsigned cls = 0; cls < static_cast<unsigned>(TraceTag::Count); ++cls)
for (unsigned cls = 0; cls < tag2u(TraceTag::Count); ++cls)
if (last[cls] != TraceTag::Count && first[cls] != TraceTag::Count)
tag_classes[static_cast<unsigned>(last[cls])] = first[cls];
s_tag_infos[tag2u(last[cls])].next = first[cls];
tag_class_init = true;
}
return tag_classes;
return s_tag_infos;
}
void enable_trace(const char * tag) {
TraceTag tag_str = find_trace_tag_by_string(tag);
if (tag_str == TraceTag::Count)
void enable_trace(const char * tag_str) {
TraceTag tag = find_trace_tag_by_string(tag_str);
if (tag == TraceTag::Count) {
warning_msg("trace tag '%s' does not exist", tag_str);
return;
}
enable_tag(tag);
auto const& tag_infos = get_tag_infos();
if (!tag_infos[tag2u(tag)].is_class)
return;
enable_tag(tag_str);
auto tag_class = get_trace_tag_class(tag_str);
if (tag_class != tag_str)
return; // Only enable the tag if it is a class tag.
auto const& next_tag = get_tag_classes();
auto t = next_tag[static_cast<unsigned>(tag_str)];
while (t != tag_str) {
auto t = tag_infos[tag2u(tag)].next;
while (t != tag) {
enable_tag(t);
t = next_tag[static_cast<unsigned>(t)];
t = tag_infos[tag2u(t)].next;
}
}

4
src/util/trace.h
View file

@ -59,10 +59,6 @@ void disable_trace(const char * tag);
bool is_trace_enabled(TraceTag tag);
void close_trace();
void open_trace();
void finalize_trace();
/*
ADD_FINALIZER('finalize_trace();')
*/
#else
#define TRACE_CODE(CODE) ((void) 0)

44
src/util/trace_tags.h
View file

@ -38,53 +38,11 @@ inline TraceTag get_trace_tag_class(TraceTag tag) {
}
}
// Return the number of TraceTags
inline constexpr int trace_tag_count() {
return static_cast<int>(TraceTag::Count);
}
// Helper function to count tags in a class
inline constexpr int count_tags_in_class(TraceTag cls) {
int count = 0;
#define X(tag, tag_class, desc) if (TraceTag::tag_class == cls) count++;
#include "util/trace_tags.def"
#undef X
return count;
}
static TraceTag tag_classes[] = {
#define X(tag, tc, desc) TraceTag::tag,
#include "util/trace_tags.def"
#undef X
};
// TODO(#7663): Implement tag_class activation of all associated tags
// TODO: Need to consider implementation approach and memory management
// Return all tags that belong to the given class
// inline const TraceTag* get_tags_by_class(TraceTag cls, int& count) {
// count = count_tags_in_class(cls);
// static TraceTag* class_tags = nullptr;
// if (class_tags) delete[] class_tags;
// class_tags = new TraceTag[count];
// int idx = 0;
// #define X(tag, tag_class, desc) \
// if (TraceTag::tag_class == cls) { \
// class_tags[idx++] = TraceTag::tag; \
// }
// include "util/trace_tags.def"
// #undef X
// return class_tags;
// }
// Find TraceTag by string
inline TraceTag find_trace_tag_by_string(const char* tag_str) {
#define X(tag, tag_class, desc) if (strncmp(#tag, tag_str, strlen(#tag)) == 0) return TraceTag::tag;
#define X(tag, tag_class, desc) if (strcmp(#tag, tag_str) == 0) return TraceTag::tag;
#include "util/trace_tags.def"
#undef X
return TraceTag::Count;