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use crate::{ BlockStat, ProfilerData, }; use flume::{ Sender, Receiver, }; use std::{ time::{ Duration, Instant, }, thread::ThreadId, }; lazy_static! { pub static ref PROFILER: Profiler = Profiler::new(); } enum ProfilerEvent { Initialize(Instant), Shutdown(Instant), BeginBlock { thread_id: ThreadId, name: &'static str, }, EndBlock { thread_id: ThreadId, time: Duration, }, } pub struct Profiler { events_sender: Sender<ProfilerEvent>, events_receiver: Receiver<ProfilerEvent>, } impl Profiler { pub fn process_events(&self, data: &mut ProfilerData) { crate::profile_block!(); for event in self.events_receiver.try_iter() { match event { ProfilerEvent::Initialize(time) => { data.main_block_start_time = time; }, ProfilerEvent::Shutdown(time) => { data.main_block.total_time = time.duration_since(data.main_block_start_time); data.main_block.measure_count = 1; } ProfilerEvent::BeginBlock { thread_id, name } => { let name_hash = (name as *const str as *const u8) as usize; let block_stat = match data.current_block_on_thread(thread_id) { Some(top_block_stat) => { let top_block_stat = unsafe { &mut *top_block_stat }; let block_stat = top_block_stat.children.entry(name_hash).or_insert_with(|| Box::new(BlockStat::new(name))); block_stat.as_mut() as *mut _ }, None => { let block_stat = data.main_block.children.entry(name_hash).or_insert_with(|| Box::new(BlockStat::new(name))); block_stat.as_mut() as *mut _ }, }; data.push_block_to_thread_stack(thread_id, block_stat); }, ProfilerEvent::EndBlock { thread_id, time } => { let thread_current_block = data.pop_block_from_thread_stack(thread_id).unwrap(); let thread_current_block = unsafe { &mut *thread_current_block }; thread_current_block.total_time += time; thread_current_block.measure_count += 1; }, } } } pub fn initialize(&self) -> ProfilerData { self.events_sender.send(ProfilerEvent::Initialize(Instant::now())).unwrap(); ProfilerData::new() } pub fn shutdown(&self, report_path: &str, profiler_data: &mut ProfilerData) { self.events_sender.send(ProfilerEvent::Shutdown(Instant::now())).unwrap(); self.process_events(profiler_data); std::fs::write(report_path, profiler_data.build_report_string()).unwrap(); } fn new() -> Profiler { let (events_sender, events_receiver) = flume::unbounded(); Profiler { events_sender, events_receiver, } } #[inline] fn begin_block(&self, name: &'static str) { self.events_sender.send(ProfilerEvent::BeginBlock { thread_id: std::thread::current().id(), name, }).unwrap(); } #[inline] fn end_block(&self, time: Duration) { self.events_sender.send(ProfilerEvent::EndBlock { thread_id: std::thread::current().id(), time, }).unwrap(); } } pub struct ProfilerBlockGuard { start_time: Instant, } impl ProfilerBlockGuard { #[inline] pub fn new(block_name: &'static str) -> ProfilerBlockGuard { let guard = ProfilerBlockGuard { start_time: Instant::now(), }; PROFILER.begin_block(block_name); guard } } impl Drop for ProfilerBlockGuard { #[inline] fn drop(&mut self) { PROFILER.end_block(self.start_time.elapsed()); } }