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-rw-r--r--crates/profile/src/hprof.rs87
-rw-r--r--crates/profile/src/lib.rs2
2 files changed, 78 insertions, 11 deletions
diff --git a/crates/profile/src/hprof.rs b/crates/profile/src/hprof.rs
index 014e906e6..5fdb37206 100644
--- a/crates/profile/src/hprof.rs
+++ b/crates/profile/src/hprof.rs
@@ -69,6 +69,20 @@ pub fn span(label: Label) -> ProfileSpan {
69 } 69 }
70} 70}
71 71
72#[inline]
73pub fn heartbeat_span() -> HeartbeatSpan {
74 let enabled = PROFILING_ENABLED.load(Ordering::Relaxed);
75 HeartbeatSpan::new(enabled)
76}
77
78#[inline]
79pub fn heartbeat() {
80 let enabled = PROFILING_ENABLED.load(Ordering::Relaxed);
81 if enabled {
82 with_profile_stack(|it| it.heartbeat(1));
83 }
84}
85
72pub struct ProfileSpan(Option<ProfilerImpl>); 86pub struct ProfileSpan(Option<ProfilerImpl>);
73 87
74struct ProfilerImpl { 88struct ProfilerImpl {
@@ -92,6 +106,28 @@ impl Drop for ProfilerImpl {
92 } 106 }
93} 107}
94 108
109pub struct HeartbeatSpan {
110 enabled: bool,
111}
112
113impl HeartbeatSpan {
114 #[inline]
115 pub fn new(enabled: bool) -> Self {
116 if enabled {
117 with_profile_stack(|it| it.heartbeats(true))
118 }
119 Self { enabled }
120 }
121}
122
123impl Drop for HeartbeatSpan {
124 fn drop(&mut self) {
125 if self.enabled {
126 with_profile_stack(|it| it.heartbeats(false))
127 }
128 }
129}
130
95static PROFILING_ENABLED: AtomicBool = AtomicBool::new(false); 131static PROFILING_ENABLED: AtomicBool = AtomicBool::new(false);
96static FILTER: Lazy<RwLock<Filter>> = Lazy::new(Default::default); 132static FILTER: Lazy<RwLock<Filter>> = Lazy::new(Default::default);
97 133
@@ -105,6 +141,7 @@ struct Filter {
105 depth: usize, 141 depth: usize,
106 allowed: HashSet<String>, 142 allowed: HashSet<String>,
107 longer_than: Duration, 143 longer_than: Duration,
144 heartbeat_longer_than: Duration,
108 version: usize, 145 version: usize,
109} 146}
110 147
@@ -121,6 +158,7 @@ impl Filter {
121 } else { 158 } else {
122 Duration::new(0, 0) 159 Duration::new(0, 0)
123 }; 160 };
161 let heartbeat_longer_than = longer_than;
124 162
125 let depth = if let Some(idx) = spec.rfind('@') { 163 let depth = if let Some(idx) = spec.rfind('@') {
126 let depth: usize = spec[idx + 1..].parse().expect("invalid profile depth"); 164 let depth: usize = spec[idx + 1..].parse().expect("invalid profile depth");
@@ -131,7 +169,7 @@ impl Filter {
131 }; 169 };
132 let allowed = 170 let allowed =
133 if spec == "*" { HashSet::new() } else { spec.split('|').map(String::from).collect() }; 171 if spec == "*" { HashSet::new() } else { spec.split('|').map(String::from).collect() };
134 Filter { depth, allowed, longer_than, version: 0 } 172 Filter { depth, allowed, longer_than, heartbeat_longer_than, version: 0 }
135 } 173 }
136 174
137 fn install(mut self) { 175 fn install(mut self) {
@@ -143,9 +181,15 @@ impl Filter {
143} 181}
144 182
145struct ProfileStack { 183struct ProfileStack {
146 starts: Vec<Instant>, 184 frames: Vec<Frame>,
147 filter: Filter, 185 filter: Filter,
148 messages: Tree<Message>, 186 messages: Tree<Message>,
187 heartbeats: bool,
188}
189
190struct Frame {
191 t: Instant,
192 heartbeats: u32,
149} 193}
150 194
151#[derive(Default)] 195#[derive(Default)]
@@ -157,35 +201,49 @@ struct Message {
157 201
158impl ProfileStack { 202impl ProfileStack {
159 fn new() -> ProfileStack { 203 fn new() -> ProfileStack {
160 ProfileStack { starts: Vec::new(), messages: Tree::default(), filter: Default::default() } 204 ProfileStack {
205 frames: Vec::new(),
206 messages: Tree::default(),
207 filter: Default::default(),
208 heartbeats: false,
209 }
161 } 210 }
162 211
163 fn push(&mut self, label: Label) -> bool { 212 fn push(&mut self, label: Label) -> bool {
164 if self.starts.is_empty() { 213 if self.frames.is_empty() {
165 if let Ok(f) = FILTER.try_read() { 214 if let Ok(f) = FILTER.try_read() {
166 if f.version > self.filter.version { 215 if f.version > self.filter.version {
167 self.filter = f.clone(); 216 self.filter = f.clone();
168 } 217 }
169 }; 218 };
170 } 219 }
171 if self.starts.len() > self.filter.depth { 220 if self.frames.len() > self.filter.depth {
172 return false; 221 return false;
173 } 222 }
174 let allowed = &self.filter.allowed; 223 let allowed = &self.filter.allowed;
175 if self.starts.is_empty() && !allowed.is_empty() && !allowed.contains(label) { 224 if self.frames.is_empty() && !allowed.is_empty() && !allowed.contains(label) {
176 return false; 225 return false;
177 } 226 }
178 227
179 self.starts.push(Instant::now()); 228 self.frames.push(Frame { t: Instant::now(), heartbeats: 0 });
180 self.messages.start(); 229 self.messages.start();
181 true 230 true
182 } 231 }
183 232
184 fn pop(&mut self, label: Label, detail: Option<String>) { 233 fn pop(&mut self, label: Label, detail: Option<String>) {
185 let start = self.starts.pop().unwrap(); 234 let frame = self.frames.pop().unwrap();
186 let duration = start.elapsed(); 235 let duration = frame.t.elapsed();
236
237 if self.heartbeats {
238 self.heartbeat(frame.heartbeats);
239 let avg_span = duration / (frame.heartbeats + 1);
240 if avg_span > self.filter.heartbeat_longer_than {
241 eprintln!("Too few heartbeats {} ({}/{:?})?", label, frame.heartbeats, duration)
242 }
243 }
244
187 self.messages.finish(Message { duration, label, detail }); 245 self.messages.finish(Message { duration, label, detail });
188 if self.starts.is_empty() { 246 if self.frames.is_empty() {
189 let longer_than = self.filter.longer_than; 247 let longer_than = self.filter.longer_than;
190 // Convert to millis for comparison to avoid problems with rounding 248 // Convert to millis for comparison to avoid problems with rounding
191 // (otherwise we could print `0ms` despite user's `>0` filter when 249 // (otherwise we could print `0ms` despite user's `>0` filter when
@@ -198,6 +256,15 @@ impl ProfileStack {
198 self.messages.clear(); 256 self.messages.clear();
199 } 257 }
200 } 258 }
259
260 fn heartbeats(&mut self, yes: bool) {
261 self.heartbeats = yes;
262 }
263 fn heartbeat(&mut self, n: u32) {
264 if let Some(frame) = self.frames.last_mut() {
265 frame.heartbeats += n;
266 }
267 }
201} 268}
202 269
203fn print( 270fn print(
diff --git a/crates/profile/src/lib.rs b/crates/profile/src/lib.rs
index 79dba47d5..9ca6341db 100644
--- a/crates/profile/src/lib.rs
+++ b/crates/profile/src/lib.rs
@@ -10,7 +10,7 @@ mod tree;
10use std::cell::RefCell; 10use std::cell::RefCell;
11 11
12pub use crate::{ 12pub use crate::{
13 hprof::{init, init_from, span}, 13 hprof::{heartbeat, heartbeat_span, init, init_from, span},
14 memory_usage::{Bytes, MemoryUsage}, 14 memory_usage::{Bytes, MemoryUsage},
15 stop_watch::{StopWatch, StopWatchSpan}, 15 stop_watch::{StopWatch, StopWatchSpan},
16}; 16};