| use std::borrow::Cow; |
| use std::error::Error; |
| use std::fs; |
| use std::mem::{self, Discriminant}; |
| use std::path::Path; |
| use std::process; |
| use std::thread::ThreadId; |
| use std::u32; |
| |
| use crate::ty::query::QueryName; |
| |
| use measureme::{StringId, TimestampKind}; |
| |
| /// MmapSerializatioSink is faster on macOS and Linux |
| /// but FileSerializationSink is faster on Windows |
| #[cfg(not(windows))] |
| type Profiler = measureme::Profiler<measureme::MmapSerializationSink>; |
| #[cfg(windows)] |
| type Profiler = measureme::Profiler<measureme::FileSerializationSink>; |
| |
| #[derive(Clone, Copy, Debug, PartialEq, Eq, Ord, PartialOrd)] |
| pub enum ProfileCategory { |
| Parsing, |
| Expansion, |
| TypeChecking, |
| BorrowChecking, |
| Codegen, |
| Linking, |
| Other, |
| } |
| |
| bitflags! { |
| struct EventFilter: u32 { |
| const GENERIC_ACTIVITIES = 1 << 0; |
| const QUERY_PROVIDERS = 1 << 1; |
| const QUERY_CACHE_HITS = 1 << 2; |
| const QUERY_BLOCKED = 1 << 3; |
| const INCR_CACHE_LOADS = 1 << 4; |
| |
| const DEFAULT = Self::GENERIC_ACTIVITIES.bits | |
| Self::QUERY_PROVIDERS.bits | |
| Self::QUERY_BLOCKED.bits | |
| Self::INCR_CACHE_LOADS.bits; |
| |
| // empty() and none() aren't const-fns unfortunately |
| const NONE = 0; |
| const ALL = !Self::NONE.bits; |
| } |
| } |
| |
| const EVENT_FILTERS_BY_NAME: &[(&str, EventFilter)] = &[ |
| ("none", EventFilter::NONE), |
| ("all", EventFilter::ALL), |
| ("generic-activity", EventFilter::GENERIC_ACTIVITIES), |
| ("query-provider", EventFilter::QUERY_PROVIDERS), |
| ("query-cache-hit", EventFilter::QUERY_CACHE_HITS), |
| ("query-blocked" , EventFilter::QUERY_BLOCKED), |
| ("incr-cache-load", EventFilter::INCR_CACHE_LOADS), |
| ]; |
| |
| fn thread_id_to_u64(tid: ThreadId) -> u64 { |
| unsafe { mem::transmute::<ThreadId, u64>(tid) } |
| } |
| |
| pub struct SelfProfiler { |
| profiler: Profiler, |
| event_filter_mask: EventFilter, |
| query_event_kind: StringId, |
| generic_activity_event_kind: StringId, |
| incremental_load_result_event_kind: StringId, |
| query_blocked_event_kind: StringId, |
| query_cache_hit_event_kind: StringId, |
| } |
| |
| impl SelfProfiler { |
| pub fn new( |
| output_directory: &Path, |
| crate_name: Option<&str>, |
| event_filters: &Option<Vec<String>> |
| ) -> Result<SelfProfiler, Box<dyn Error>> { |
| fs::create_dir_all(output_directory)?; |
| |
| let crate_name = crate_name.unwrap_or("unknown-crate"); |
| let filename = format!("{}-{}.rustc_profile", crate_name, process::id()); |
| let path = output_directory.join(&filename); |
| let profiler = Profiler::new(&path)?; |
| |
| let query_event_kind = profiler.alloc_string("Query"); |
| let generic_activity_event_kind = profiler.alloc_string("GenericActivity"); |
| let incremental_load_result_event_kind = profiler.alloc_string("IncrementalLoadResult"); |
| let query_blocked_event_kind = profiler.alloc_string("QueryBlocked"); |
| let query_cache_hit_event_kind = profiler.alloc_string("QueryCacheHit"); |
| |
| let mut event_filter_mask = EventFilter::empty(); |
| |
| if let Some(ref event_filters) = *event_filters { |
| let mut unknown_events = vec![]; |
| for item in event_filters { |
| if let Some(&(_, mask)) = EVENT_FILTERS_BY_NAME.iter() |
| .find(|&(name, _)| name == item) { |
| event_filter_mask |= mask; |
| } else { |
| unknown_events.push(item.clone()); |
| } |
| } |
| |
| // Warn about any unknown event names |
| if unknown_events.len() > 0 { |
| unknown_events.sort(); |
| unknown_events.dedup(); |
| |
| warn!("Unknown self-profiler events specified: {}. Available options are: {}.", |
| unknown_events.join(", "), |
| EVENT_FILTERS_BY_NAME.iter() |
| .map(|&(name, _)| name.to_string()) |
| .collect::<Vec<_>>() |
| .join(", ")); |
| } |
| } else { |
| event_filter_mask = EventFilter::DEFAULT; |
| } |
| |
| Ok(SelfProfiler { |
| profiler, |
| event_filter_mask, |
| query_event_kind, |
| generic_activity_event_kind, |
| incremental_load_result_event_kind, |
| query_blocked_event_kind, |
| query_cache_hit_event_kind, |
| }) |
| } |
| |
| fn get_query_name_string_id(query_name: QueryName) -> StringId { |
| let discriminant = unsafe { |
| mem::transmute::<Discriminant<QueryName>, u64>(mem::discriminant(&query_name)) |
| }; |
| |
| StringId::reserved(discriminant as u32) |
| } |
| |
| pub fn register_query_name(&self, query_name: QueryName) { |
| let id = SelfProfiler::get_query_name_string_id(query_name); |
| self.profiler.alloc_string_with_reserved_id(id, query_name.as_str()); |
| } |
| |
| #[inline] |
| pub fn start_activity( |
| &self, |
| label: impl Into<Cow<'static, str>>, |
| ) { |
| if self.event_filter_mask.contains(EventFilter::GENERIC_ACTIVITIES) { |
| self.record(&label.into(), self.generic_activity_event_kind, TimestampKind::Start); |
| } |
| } |
| |
| #[inline] |
| pub fn end_activity( |
| &self, |
| label: impl Into<Cow<'static, str>>, |
| ) { |
| if self.event_filter_mask.contains(EventFilter::GENERIC_ACTIVITIES) { |
| self.record(&label.into(), self.generic_activity_event_kind, TimestampKind::End); |
| } |
| } |
| |
| #[inline] |
| pub fn record_query_hit(&self, query_name: QueryName) { |
| if self.event_filter_mask.contains(EventFilter::QUERY_CACHE_HITS) { |
| self.record_query(query_name, self.query_cache_hit_event_kind, TimestampKind::Instant); |
| } |
| } |
| |
| #[inline] |
| pub fn start_query(&self, query_name: QueryName) { |
| if self.event_filter_mask.contains(EventFilter::QUERY_PROVIDERS) { |
| self.record_query(query_name, self.query_event_kind, TimestampKind::Start); |
| } |
| } |
| |
| #[inline] |
| pub fn end_query(&self, query_name: QueryName) { |
| if self.event_filter_mask.contains(EventFilter::QUERY_PROVIDERS) { |
| self.record_query(query_name, self.query_event_kind, TimestampKind::End); |
| } |
| } |
| |
| #[inline] |
| pub fn incremental_load_result_start(&self, query_name: QueryName) { |
| if self.event_filter_mask.contains(EventFilter::INCR_CACHE_LOADS) { |
| self.record_query( |
| query_name, |
| self.incremental_load_result_event_kind, |
| TimestampKind::Start |
| ); |
| } |
| } |
| |
| #[inline] |
| pub fn incremental_load_result_end(&self, query_name: QueryName) { |
| if self.event_filter_mask.contains(EventFilter::INCR_CACHE_LOADS) { |
| self.record_query( |
| query_name, |
| self.incremental_load_result_event_kind, |
| TimestampKind::End |
| ); |
| } |
| } |
| |
| #[inline] |
| pub fn query_blocked_start(&self, query_name: QueryName) { |
| if self.event_filter_mask.contains(EventFilter::QUERY_BLOCKED) { |
| self.record_query(query_name, self.query_blocked_event_kind, TimestampKind::Start); |
| } |
| } |
| |
| #[inline] |
| pub fn query_blocked_end(&self, query_name: QueryName) { |
| if self.event_filter_mask.contains(EventFilter::QUERY_BLOCKED) { |
| self.record_query(query_name, self.query_blocked_event_kind, TimestampKind::End); |
| } |
| } |
| |
| #[inline] |
| fn record(&self, event_id: &str, event_kind: StringId, timestamp_kind: TimestampKind) { |
| let thread_id = thread_id_to_u64(std::thread::current().id()); |
| |
| let event_id = self.profiler.alloc_string(event_id); |
| self.profiler.record_event(event_kind, event_id, thread_id, timestamp_kind); |
| } |
| |
| #[inline] |
| fn record_query( |
| &self, |
| query_name: QueryName, |
| event_kind: StringId, |
| timestamp_kind: TimestampKind, |
| ) { |
| let dep_node_name = SelfProfiler::get_query_name_string_id(query_name); |
| |
| let thread_id = thread_id_to_u64(std::thread::current().id()); |
| |
| self.profiler.record_event(event_kind, dep_node_name, thread_id, timestamp_kind); |
| } |
| } |