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https://github.com/RGBCube/serenity
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Profiler: Store event type as enum
Also check for the most common event type (sample) first instead of leaving it as the fallback. This avoids a lot of string comparisons while parsing profiles.
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parent
5a2ccbffc5
commit
7abf58ecaf
2 changed files with 45 additions and 19 deletions
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@ -77,9 +77,9 @@ void Profile::rebuild_tree()
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HashTable<FlatPtr> live_allocations;
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for_each_event_in_filter_range([&](auto& event) {
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if (event.type == "malloc"sv)
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if (event.type == Event::Type::Malloc)
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live_allocations.set(event.ptr);
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else if (event.type == "free"sv)
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else if (event.type == Event::Type::Free)
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live_allocations.remove(event.ptr);
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});
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@ -99,10 +99,10 @@ void Profile::rebuild_tree()
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m_filtered_event_indices.append(event_index);
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if (event.type == "malloc"sv && !live_allocations.contains(event.ptr))
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if (event.type == Event::Type::Malloc && !live_allocations.contains(event.ptr))
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continue;
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if (event.type == "free"sv)
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if (event.type == Event::Type::Free)
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continue;
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auto for_each_frame = [&]<typename Callback>(Callback callback) {
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@ -239,23 +239,27 @@ Result<NonnullOwnPtr<Profile>, String> Profile::load_from_perfcore_file(const St
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next_serial.increment();
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event.timestamp = perf_event.get("timestamp").to_number<u64>();
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event.lost_samples = perf_event.get("lost_samples").to_number<u32>();
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event.type = perf_event.get("type").to_string();
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event.pid = perf_event.get("pid").to_i32();
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event.tid = perf_event.get("tid").to_i32();
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bool is_signpost = false;
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auto type_string = perf_event.get("type").to_string();
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if (event.type == "malloc"sv) {
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if (type_string == "sample"sv) {
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event.type = Event::Type::Sample;
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} else if (type_string == "malloc"sv) {
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event.type = Event::Type::Malloc;
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event.ptr = perf_event.get("ptr").to_number<FlatPtr>();
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event.size = perf_event.get("size").to_number<size_t>();
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} else if (event.type == "free"sv) {
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} else if (type_string == "free"sv) {
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event.type = Event::Type::Free;
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event.ptr = perf_event.get("ptr").to_number<FlatPtr>();
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} else if (event.type == "signpost"sv) {
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is_signpost = true;
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} else if (type_string == "signpost"sv) {
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event.type = Event::Type::Signpost;
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auto string_id = perf_event.get("arg1").to_number<FlatPtr>();
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event.signpost_string = profile_strings.get(string_id).value_or(String::formatted("Signpost #{}", string_id));
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event.arg2 = perf_event.get("arg2").to_number<FlatPtr>();
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} else if (event.type == "mmap"sv) {
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} else if (type_string == "mmap"sv) {
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event.type = Event::Type::Mmap;
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event.ptr = perf_event.get("ptr").to_number<FlatPtr>();
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event.size = perf_event.get("size").to_number<size_t>();
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event.name = perf_event.get("name").to_string();
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@ -264,11 +268,13 @@ Result<NonnullOwnPtr<Profile>, String> Profile::load_from_perfcore_file(const St
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if (it != current_processes.end())
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it->value->library_metadata.handle_mmap(event.ptr, event.size, event.name);
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continue;
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} else if (event.type == "munmap"sv) {
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} else if (type_string == "munmap"sv) {
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event.type = Event::Type::Munmap;
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event.ptr = perf_event.get("ptr").to_number<FlatPtr>();
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event.size = perf_event.get("size").to_number<size_t>();
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continue;
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} else if (event.type == "process_create"sv) {
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} else if (type_string == "process_create"sv) {
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event.type = Event::Type::ProcessCreate;
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event.parent_pid = perf_event.get("parent_pid").to_number<FlatPtr>();
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event.executable = perf_event.get("executable").to_string();
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@ -283,7 +289,8 @@ Result<NonnullOwnPtr<Profile>, String> Profile::load_from_perfcore_file(const St
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current_processes.set(sampled_process->pid, sampled_process);
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all_processes.append(move(sampled_process));
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continue;
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} else if (event.type == "process_exec"sv) {
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} else if (type_string == "process_exec"sv) {
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event.type = Event::Type::ProcessExec;
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event.executable = perf_event.get("executable").to_string();
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auto old_process = current_processes.get(event.pid).value();
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@ -302,23 +309,29 @@ Result<NonnullOwnPtr<Profile>, String> Profile::load_from_perfcore_file(const St
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current_processes.set(sampled_process->pid, sampled_process);
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all_processes.append(move(sampled_process));
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continue;
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} else if (event.type == "process_exit"sv) {
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} else if (type_string == "process_exit"sv) {
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event.type = Event::Type::ProcessExit;
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auto old_process = current_processes.get(event.pid).value();
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old_process->end_valid = event.serial;
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current_processes.remove(event.pid);
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continue;
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} else if (event.type == "thread_create"sv) {
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} else if (type_string == "thread_create"sv) {
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event.type = Event::Type::ThreadCreate;
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event.parent_tid = perf_event.get("parent_tid").to_i32();
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auto it = current_processes.find(event.pid);
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if (it != current_processes.end())
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it->value->handle_thread_create(event.tid, event.serial);
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continue;
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} else if (event.type == "thread_exit"sv) {
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} else if (type_string == "thread_exit"sv) {
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event.type = Event::Type::ThreadExit;
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auto it = current_processes.find(event.pid);
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if (it != current_processes.end())
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it->value->handle_thread_exit(event.tid, event.serial);
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continue;
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} else {
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dbgln("Unknown event type '{}'", type_string);
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VERIFY_NOT_REACHED();
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}
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auto maybe_kernel_base = Symbolication::kernel_base();
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@ -362,7 +375,7 @@ Result<NonnullOwnPtr<Profile>, String> Profile::load_from_perfcore_file(const St
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FlatPtr innermost_frame_address = event.frames.at(1).address;
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event.in_kernel = maybe_kernel_base.has_value() && innermost_frame_address >= maybe_kernel_base.value();
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if (is_signpost)
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if (event.type == Event::Type::Signpost)
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signposts.append(move(event));
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else
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events.append(move(event));
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