deps: update metrics to a more recent version

This isn't the latest version of metrics; it's just a more recent
version that allows us to remove a duplicate ahash dependency from the
build graph.

Cargo.lock

@@ -23,17 +23,6 @@ version = "1.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "aae1277d39aeec15cb388266ecc24b11c80469deae6067e17a1a7aa9e5c1f234"
 
-[[package]]
-name = "ahash"
-version = "0.7.8"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "891477e0c6a8957309ee5c45a6368af3ae14bb510732d2684ffa19af310920f9"
-dependencies = [
- "getrandom",
- "once_cell",
- "version_check",
-]
-
 [[package]]
 name = "ahash"
 version = "0.8.11"
@@ -2348,7 +2337,7 @@ version = "0.14.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e5274423e17b7c9fc20b6e7e208532f9b19825d82dfd615708b70edd83df41f1"
 dependencies = [
- "ahash 0.8.11",
+ "ahash",
  "allocator-api2",
 ]
 
@@ -2898,7 +2887,7 @@ checksum = "03087c2bad5e1034e8cace5926dec053fb3790248370865f5117a7d0213354c8"
 name = "lfucache"
 version = "0.1.0"
 dependencies = [
- "ahash 0.8.11",
+ "ahash",
  "config",
  "fnv",
  "intrusive-collections",
@@ -3295,25 +3284,24 @@ dependencies = [
 
 [[package]]
 name = "metrics"
-version = "0.17.1"
+version = "0.21.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "55586aa936c35f34ba8aa5d97356d554311206e1ce1f9e68fe7b07288e5ad827"
+checksum = "fde3af1a009ed76a778cb84fdef9e7dbbdf5775ae3e4cc1f434a6a307f6f76c5"
 dependencies = [
- "ahash 0.7.8",
+ "ahash",
  "metrics-macros",
+ "portable-atomic",
 ]
 
 [[package]]
 name = "metrics-macros"
-version = "0.4.1"
+version = "0.7.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0daa0ab3a0ae956d0e2c1f42511422850e577d36a255357d1a7d08d45ee3a2f1"
+checksum = "38b4faf00617defe497754acde3024865bc143d44a86799b24e191ecff91354f"
 dependencies = [
- "lazy_static",
  "proc-macro2",
  "quote",
- "regex",
- "syn 1.0.109",
+ "syn 2.0.63",
 ]
 
 [[package]]
@@ -4196,6 +4184,12 @@ dependencies = [
  "windows-sys 0.52.0",
 ]
 
+[[package]]
+name = "portable-atomic"
+version = "1.6.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7170ef9988bc169ba16dd36a7fa041e5c4cbeb6a35b76d4c03daded371eae7c0"
+
 [[package]]
 name = "portable-pty"
 version = "0.8.1"

codec/Cargo.toml

@@ -12,7 +12,7 @@ anyhow = "1.0"
 config = { path = "../config" }
 leb128 = "0.2"
 log = "0.4"
-metrics = { version="0.17", features=["std"]}
+metrics = "0.21"
 mux = { path = "../mux" }
 portable-pty = { path = "../pty", features = ["serde_support"]}
 rangeset = { path = "../rangeset" }

lfucache/Cargo.toml

@@ -11,7 +11,7 @@ ahash = "0.8"
 config = { path = "../config" }
 fnv = "1.0"
 intrusive-collections = "0.9"
-metrics = { version="0.17", features=["std"]}
+metrics = "0.21"
 
 [dev-dependencies]
 k9 = "0.12"

lua-api-crates/color-funcs/src/image_colors.rs

@@ -18,8 +18,8 @@ use deltae::LabValue;
 use image::Pixel;
 use lru::LruCache;
 use luahelper::impl_lua_conversion_dynamic;
-use std::num::NonZeroUsize;
 use std::collections::HashMap;
+use std::num::NonZeroUsize;
 use std::sync::Mutex;
 use std::time::SystemTime;
 use wezterm_dynamic::{FromDynamic, ToDynamic};

mux/Cargo.toml

@@ -25,7 +25,7 @@ lazy_static = "1.4"
 libc = "0.2"
 log = "0.4"
 luahelper = { path = "../luahelper" }
-metrics = { version="0.17", features=["std"]}
+metrics = "0.21"
 mlua = "0.9"
 names = { version = "0.12", default-features = false }
 nix = {version="0.25", features=["term"]}

term/src/terminalstate/mod.rs

@@ -5,10 +5,10 @@ use super::*;
 use crate::color::{ColorPalette, RgbColor};
 use crate::config::{BidiMode, NewlineCanon};
 use log::debug;
-use std::num::NonZeroUsize;
 use num_traits::ToPrimitive;
 use std::collections::HashMap;
 use std::io::{BufWriter, Write};
+use std::num::NonZeroUsize;
 use std::sync::mpsc::{channel, Sender};
 use std::sync::Arc;
 use terminfo::{Database, Value};

wezterm-client/Cargo.toml

@@ -19,7 +19,7 @@ lazy_static = "1.4"
 log = "0.4"
 libc = "0.2"
 lru = "0.12"
-metrics = { version="0.17", features=["std"]}
+metrics = "0.21"
 mux = { path = "../mux" }
 openssl = "0.10.57"
 parking_lot = "0.12"

wezterm-client/src/pane/renderable.rs

@@ -1,5 +1,4 @@
 use crate::domain::ClientInner;
-use std::num::NonZeroUsize;
 use crate::pane::clientpane::ClientPane;
 use anyhow::anyhow;
 use codec::*;
@@ -13,6 +12,7 @@ use rangeset::*;
 use ratelim::RateLimiter;
 use std::cell::RefCell;
 use std::collections::HashMap;
+use std::num::NonZeroUsize;
 use std::ops::Range;
 use std::sync::atomic::{AtomicBool, Ordering};
 use std::sync::{Arc, Mutex};
@@ -105,7 +105,9 @@ impl RenderableInner {
             poll_interval: BASE_POLL_INTERVAL,
             cursor_position: StableCursorPosition::default(),
             dimensions,
-            lines: LruCache::new(NonZeroUsize::new(configuration().scrollback_lines.max(128)).unwrap()),
+            lines: LruCache::new(
+                NonZeroUsize::new(configuration().scrollback_lines.max(128)).unwrap(),
+            ),
             title: title.to_string(),
             working_dir: None,
             fetch_limiter,

wezterm-font/Cargo.toml

@@ -28,7 +28,7 @@ lazy_static = "1.4"
 lfucache = { path = "../lfucache" }
 log = "0.4"
 memmap2 = "0.2"
-metrics = { version="0.17", features=["std"]}
+metrics = "0.21"
 ordered-float = "4.1"
 rangeset = { path = "../rangeset" }
 termwiz = { path = "../termwiz" }

wezterm-gui/Cargo.toml

@@ -62,7 +62,7 @@ libc = "0.2"
 lfucache = { path = "../lfucache" }
 log = "0.4"
 luahelper = { path = "../luahelper" }
-metrics = { version="0.17", features=["std"]}
+metrics = "0.21"
 mlua = {version="0.9", features=["send"]}
 mux = { path = "../mux" }
 mux-lua = { path = "../lua-api-crates/mux" }

wezterm-gui/src/stats.rs

@@ -2,10 +2,11 @@ use config::configuration;
 use config::lua::get_or_create_sub_module;
 use config::lua::mlua::Lua;
 use hdrhistogram::Histogram;
-use metrics::{GaugeValue, Key, Recorder, Unit};
+use metrics::{Counter, Gauge, Key, KeyName, Recorder, SharedString, Unit};
+use parking_lot::Mutex;
 use std::collections::HashMap;
-use std::sync::atomic::{AtomicBool, Ordering};
-use std::sync::{Arc, Mutex};
+use std::sync::atomic::{AtomicBool, AtomicUsize, Ordering};
+use std::sync::Arc;
 use std::time::{Duration, Instant};
 use tabout::{tabulate_output, Alignment, Column};
 
@@ -14,21 +15,40 @@ lazy_static::lazy_static! {
     static ref INNER: Arc<Mutex<Inner>> = make_inner();
 }
 
-struct Throughput {
+struct ThroughputInner {
     hist: Histogram<u64>,
     last: Option<Instant>,
     count: u64,
 }
 
+struct Throughput {
+    inner: Mutex<ThroughputInner>,
+}
+
 impl Throughput {
     fn new() -> Self {
         Self {
-            hist: Histogram::new(2).expect("failed to create histogram"),
-            last: None,
-            count: 0,
+            inner: Mutex::new(ThroughputInner {
+                hist: Histogram::new(2).expect("failed to create histogram"),
+                last: None,
+                count: 0,
+            }),
         }
     }
+    fn current(&self) -> u64 {
+        self.inner.lock().current()
+    }
 
+    fn percentiles(&self) -> (u64, u64, u64) {
+        let inner = self.inner.lock();
+        let p50 = inner.hist.value_at_percentile(50.);
+        let p75 = inner.hist.value_at_percentile(75.);
+        let p95 = inner.hist.value_at_percentile(95.);
+        (p50, p75, p95)
+    }
+}
+
+impl ThroughputInner {
     fn add(&mut self, value: u64) {
         if let Some(ref last) = self.last {
             let elapsed = last.elapsed();
@@ -57,14 +77,69 @@ impl Throughput {
     }
 }
 
+impl metrics::HistogramFn for Throughput {
+    fn record(&self, value: f64) {
+        self.inner.lock().add(value as u64);
+    }
+}
+
+struct ScaledHistogram {
+    hist: Mutex<Histogram<u64>>,
+    scale: f64,
+}
+
+impl ScaledHistogram {
+    fn new(scale: f64) -> Arc<Self> {
+        Arc::new(Self {
+            hist: Mutex::new(Histogram::new(2).expect("failed to create new Histogram")),
+            scale,
+        })
+    }
+    fn percentiles(&self) -> (u64, u64, u64) {
+        let hist = self.hist.lock();
+        let p50 = hist.value_at_percentile(50.);
+        let p75 = hist.value_at_percentile(75.);
+        let p95 = hist.value_at_percentile(95.);
+        (p50, p75, p95)
+    }
+
+    fn latency_percentiles(&self) -> (Duration, Duration, Duration) {
+        let hist = self.hist.lock();
+        let p50 = pctile_latency(&*hist, 50.);
+        let p75 = pctile_latency(&*hist, 75.);
+        let p95 = pctile_latency(&*hist, 95.);
+        (p50, p75, p95)
+    }
+}
+
+impl metrics::HistogramFn for ScaledHistogram {
+    fn record(&self, value: f64) {
+        self.hist.lock().record((value * self.scale) as u64).ok();
+    }
+}
+
 fn pctile_latency(histogram: &Histogram<u64>, p: f64) -> Duration {
     Duration::from_nanos(histogram.value_at_percentile(p))
 }
 
+struct MyCounter {
+    value: AtomicUsize,
+}
+
+impl metrics::CounterFn for MyCounter {
+    fn increment(&self, value: u64) {
+        self.value.fetch_add(value as usize, Ordering::Relaxed);
+    }
+
+    fn absolute(&self, value: u64) {
+        self.value.store(value as usize, Ordering::Relaxed);
+    }
+}
+
 struct Inner {
-    histograms: HashMap<Key, Histogram<u64>>,
-    throughput: HashMap<Key, Throughput>,
-    counters: HashMap<Key, u64>,
+    histograms: HashMap<Key, Arc<ScaledHistogram>>,
+    throughput: HashMap<Key, Arc<Throughput>>,
+    counters: HashMap<Key, Arc<MyCounter>>,
 }
 
 impl Inner {
@@ -136,12 +211,10 @@ impl Inner {
             if last_print.elapsed() >= Duration::from_secs(seconds) {
                 let mut data = vec![];
 
-                let mut inner = inner.lock().unwrap();
+                let mut inner = inner.lock();
                 for (key, tput) in &mut inner.throughput {
                     let current = tput.current();
-                    let p50 = tput.hist.value_at_percentile(50.);
-                    let p75 = tput.hist.value_at_percentile(75.);
-                    let p95 = tput.hist.value_at_percentile(95.);
+                    let (p50, p75, p95) = tput.percentiles();
                     data.push(vec![
                         key.to_string(),
                         format!("{:.2?}", current),
@@ -157,9 +230,7 @@ impl Inner {
                 data.clear();
                 for (key, histogram) in &inner.histograms {
                     if key.name().ends_with(".size") {
-                        let p50 = histogram.value_at_percentile(50.);
-                        let p75 = histogram.value_at_percentile(75.);
-                        let p95 = histogram.value_at_percentile(95.);
+                        let (p50, p75, p95) = histogram.percentiles();
                         data.push(vec![
                             key.to_string(),
                             format!("{:.2?}", p50),
@@ -167,9 +238,7 @@ impl Inner {
                             format!("{:.2?}", p95),
                         ]);
                     } else {
-                        let p50 = pctile_latency(histogram, 50.);
-                        let p75 = pctile_latency(histogram, 75.);
-                        let p95 = pctile_latency(histogram, 95.);
+                        let (p50, p75, p95) = histogram.latency_percentiles();
                         data.push(vec![
                             key.to_string(),
                             format!("{:.2?}", p50),
@@ -184,7 +253,10 @@ impl Inner {
 
                 data.clear();
                 for (key, count) in &inner.counters {
-                    data.push(vec![key.to_string(), count.to_string()]);
+                    data.push(vec![
+                        key.to_string(),
+                        count.value.load(Ordering::Relaxed).to_string(),
+                    ]);
                 }
                 data.sort_by(|a, b| a[0].cmp(&b[0]));
                 eprintln!();
@@ -226,54 +298,59 @@ impl Stats {
 }
 
 impl Recorder for Stats {
-    fn register_counter(
-        &self,
-        _key: &Key,
-        _unit: Option<Unit>,
-        _description: Option<&'static str>,
-    ) {
+    fn describe_counter(&self, _key: KeyName, _unit: Option<Unit>, _description: SharedString) {}
+
+    fn describe_gauge(&self, _key: KeyName, _unit: Option<Unit>, _description: SharedString) {}
+
+    fn describe_histogram(&self, _key: KeyName, _unit: Option<Unit>, _description: SharedString) {}
+
+    fn register_counter(&self, key: &Key) -> Counter {
+        let mut inner = self.inner.lock();
+        match inner.counters.get(key) {
+            Some(existing) => Counter::from_arc(existing.clone()),
+            None => {
+                let counter = Arc::new(MyCounter {
+                    value: AtomicUsize::new(0),
+                });
+                inner.counters.insert(key.clone(), counter.clone());
+                metrics::Counter::from_arc(counter)
+            }
+        }
     }
 
-    fn register_gauge(&self, _key: &Key, _unit: Option<Unit>, _description: Option<&'static str>) {}
-
-    fn register_histogram(
-        &self,
-        _key: &Key,
-        _unit: Option<Unit>,
-        _description: Option<&'static str>,
-    ) {
+    fn register_gauge(&self, _key: &Key) -> Gauge {
+        Gauge::noop()
     }
 
-    fn increment_counter(&self, key: &Key, value: u64) {
-        let mut inner = self.inner.lock().unwrap();
-        let counter = inner.counters.entry(key.clone()).or_insert_with(|| 0);
-        *counter = *counter + value;
-    }
-
-    fn update_gauge(&self, key: &Key, value: GaugeValue) {
-        log::trace!("gauge '{}' -> {:?}", key, value);
-    }
-
-    fn record_histogram(&self, key: &Key, value: f64) {
-        let mut inner = self.inner.lock().unwrap();
+    fn register_histogram(&self, key: &Key) -> metrics::Histogram {
+        let mut inner = self.inner.lock();
         if key.name().ends_with(".rate") {
-            let tput = inner
-                .throughput
-                .entry(key.clone())
-                .or_insert_with(|| Throughput::new());
-            tput.add(value as u64);
+            match inner.throughput.get(key) {
+                Some(existing) => metrics::Histogram::from_arc(existing.clone()),
+                None => {
+                    let tput = Arc::new(Throughput::new());
+                    inner.throughput.insert(key.clone(), tput.clone());
+
+                    metrics::Histogram::from_arc(tput)
+                }
+            }
         } else {
-            let value = if key.name().ends_with(".size") {
-                value
-            } else {
-                // Assume seconds; convert to nanoseconds
-                value * 1_000_000_000.0
-            };
-            let histogram = inner
-                .histograms
-                .entry(key.clone())
-                .or_insert_with(|| Histogram::new(2).expect("failed to crate new Histogram"));
-            histogram.record(value as u64).ok();
+            match inner.histograms.get(key) {
+                Some(existing) => metrics::Histogram::from_arc(existing.clone()),
+                None => {
+                    let scale = if key.name().ends_with(".size") {
+                        1.0
+                    } else {
+                        // Assume seconds; convert to nanoseconds
+                        1_000_000_000.0
+                    };
+
+                    let histogram = ScaledHistogram::new(scale);
+                    inner.histograms.insert(key.clone(), histogram.clone());
+
+                    metrics::Histogram::from_arc(histogram)
+                }
+            }
         }
     }
 }
@@ -283,11 +360,11 @@ pub fn register(lua: &Lua) -> anyhow::Result<()> {
     metrics_mod.set(
         "get_counters",
         lua.create_function(|_, _: ()| {
-            let inner = INNER.lock().unwrap();
-            let counters: HashMap<String, u64> = inner
+            let inner = INNER.lock();
+            let counters: HashMap<String, usize> = inner
                 .counters
                 .iter()
-                .map(|(k, &v)| (k.name().to_string(), v))
+                .map(|(k, v)| (k.name().to_string(), v.value.load(Ordering::Relaxed)))
                 .collect();
             Ok(counters)
         })?,
@@ -295,16 +372,17 @@ pub fn register(lua: &Lua) -> anyhow::Result<()> {
     metrics_mod.set(
         "get_throughput",
         lua.create_function(|_, _: ()| {
-            let mut inner = INNER.lock().unwrap();
+            let mut inner = INNER.lock();
             let counters: HashMap<String, HashMap<String, u64>> = inner
                 .throughput
                 .iter_mut()
                 .map(|(k, tput)| {
                     let mut res = HashMap::new();
                     res.insert("current".to_string(), tput.current());
-                    res.insert("p50".to_string(), tput.hist.value_at_percentile(50.));
-                    res.insert("p75".to_string(), tput.hist.value_at_percentile(75.));
-                    res.insert("p95".to_string(), tput.hist.value_at_percentile(95.));
+                    let (p50, p75, p95) = tput.percentiles();
+                    res.insert("p50".to_string(), p50);
+                    res.insert("p75".to_string(), p75);
+                    res.insert("p95".to_string(), p95);
                     (k.name().to_string(), res)
                 })
                 .collect();
@@ -314,16 +392,17 @@ pub fn register(lua: &Lua) -> anyhow::Result<()> {
     metrics_mod.set(
         "get_sizes",
         lua.create_function(|_, _: ()| {
-            let mut inner = INNER.lock().unwrap();
+            let mut inner = INNER.lock();
             let counters: HashMap<String, HashMap<String, u64>> = inner
                 .histograms
                 .iter_mut()
                 .filter_map(|(key, hist)| {
                     if key.name().ends_with(".size") {
                         let mut res = HashMap::new();
-                        res.insert("p50".to_string(), hist.value_at_percentile(50.));
-                        res.insert("p75".to_string(), hist.value_at_percentile(75.));
-                        res.insert("p95".to_string(), hist.value_at_percentile(95.));
+                        let (p50, p75, p95) = hist.percentiles();
+                        res.insert("p50".to_string(), p50);
+                        res.insert("p75".to_string(), p75);
+                        res.insert("p95".to_string(), p95);
                         Some((key.name().to_string(), res))
                     } else {
                         None
@@ -336,25 +415,17 @@ pub fn register(lua: &Lua) -> anyhow::Result<()> {
     metrics_mod.set(
         "get_latency",
         lua.create_function(|_, _: ()| {
-            let mut inner = INNER.lock().unwrap();
+            let mut inner = INNER.lock();
             let counters: HashMap<String, HashMap<String, String>> = inner
                 .histograms
                 .iter_mut()
                 .filter_map(|(key, hist)| {
                     if !key.name().ends_with(".size") {
                         let mut res = HashMap::new();
-                        res.insert(
-                            "p50".to_string(),
-                            format!("{:?}", pctile_latency(hist, 50.)),
-                        );
-                        res.insert(
-                            "p75".to_string(),
-                            format!("{:?}", pctile_latency(hist, 75.)),
-                        );
-                        res.insert(
-                            "p95".to_string(),
-                            format!("{:?}", pctile_latency(hist, 95.)),
-                        );
+                        let (p50, p75, p95) = hist.latency_percentiles();
+                        res.insert("p50".to_string(), format!("{p50:?}"));
+                        res.insert("p75".to_string(), format!("{p75:?}"));
+                        res.insert("p95".to_string(), format!("{p95:?}"));
                         Some((key.name().to_string(), res))
                     } else {
                         None

window/Cargo.toml

@@ -34,7 +34,7 @@ lazy_static = "1.4"
 libloading = "0.6"
 line_drawing = "0.8"
 log = "0.4"
-metrics = { version="0.17", features=["std"]}
+metrics = "0.21"
 promise = { path = "../promise" }
 raw-window-handle = "0.5"
 resize = "0.5"