Replace usage of Lazy from once_cell by LazyLock from std

puffin/Cargo.toml

@@ -39,7 +39,6 @@ web = ["dep:js-sys", "dep:web-time"]
 byteorder = { version = "1.0" }
 cfg-if = "1.0"
 itertools = "0.10"
-once_cell = "1.0"
 parking_lot = { version = "0.12"}
 
 # Optional:

puffin/src/global_profiler.rs

@@ -1,6 +1,7 @@
-use std::{collections::BTreeMap, sync::Arc};
-
-use once_cell::sync::Lazy;
+use std::{
+    collections::BTreeMap,
+    sync::{Arc, LazyLock},
+};
 
 use crate::{
     Error, FrameData, FrameIndex, FrameSinkId, ScopeCollection, ScopeDetails, ScopeId, StreamInfo,
@@ -44,8 +45,8 @@ impl Default for GlobalProfiler {
 impl GlobalProfiler {
     /// Access to the global profiler singleton.
     pub fn lock() -> parking_lot::MutexGuard<'static, Self> {
-        static GLOBAL_PROFILER: Lazy<parking_lot::Mutex<GlobalProfiler>> =
-            Lazy::new(Default::default);
+        static GLOBAL_PROFILER: LazyLock<parking_lot::Mutex<GlobalProfiler>> =
+            LazyLock::new(Default::default);
         GLOBAL_PROFILER.lock()
     }
 

puffin/src/lib.rs

@@ -104,13 +104,14 @@ pub fn now_ns() -> NanoSecond {
 
     // This can maybe be optimized
 
+    use std::sync::LazyLock;
     #[cfg(not(target_arch = "wasm32"))]
     use std::time::Instant;
     #[cfg(target_arch = "wasm32")]
     use web_time::Instant;
 
-    static START_TIME: once_cell::sync::Lazy<(NanoSecond, Instant)> =
-        once_cell::sync::Lazy::new(|| (nanos_since_epoch(), Instant::now()));
+    static START_TIME: LazyLock<(NanoSecond, Instant)> =
+        LazyLock::new(|| (nanos_since_epoch(), Instant::now()));
     START_TIME.0 + START_TIME.1.elapsed().as_nanos() as NanoSecond
 }
 

puffin_egui/Cargo.toml

@@ -30,7 +30,6 @@ indexmap = { version = "2.1.0", features = ["serde"] }
 log = "0.4"
 log-once = "0.4"
 natord = "1.0.9"
-once_cell = "1.7"
 parking_lot = "0.12"
 puffin = { version = "0.19.1", path = "../puffin", features = ["packing"] }
 serde = { version = "1.0", features = ["derive"], optional = true }

puffin_egui/src/lib.rs

@@ -84,8 +84,8 @@ pub fn profiler_window(ctx: &egui::Context) -> bool {
     open
 }
 
-static PROFILE_UI: once_cell::sync::Lazy<parking_lot::Mutex<GlobalProfilerUi>> =
-    once_cell::sync::Lazy::new(Default::default);
+static PROFILE_UI: std::sync::LazyLock<parking_lot::Mutex<GlobalProfilerUi>> =
+    std::sync::LazyLock::new(Default::default);
 
 /// Show the profiler.
 ///

puffin_http/Cargo.toml

@@ -27,4 +27,3 @@ puffin = { version = "0.19.1", path = "../puffin", features = [
 [dev-dependencies]
 simple_logger = "4.2"
 paste = "1.0.15"
-once_cell = "1.19.0"

puffin_http/src/server.rs

@@ -157,8 +157,8 @@ impl Server {
     ///                 }
     ///
     ///                 #[doc = concat!("The instance of the ", std::stringify!([< $name:lower >]), " thread profiler's server")]
-    ///                 pub static [< $name:upper _PROFILER_SERVER >] : once_cell::sync::Lazy<std::sync::Mutex<puffin_http::Server>>
-    ///                     = once_cell::sync::Lazy::new(|| {
+    ///                 pub static [< $name:upper _PROFILER_SERVER >] : std::sync::LazyLock<std::sync::Mutex<puffin_http::Server>>
+    ///                     = std::sync::LazyLock::new(|| {
     ///                         eprintln!(
     ///                             "starting puffin_http server for {} profiler at {}",
     ///                             std::stringify!([<$name:lower>]),
@@ -182,7 +182,7 @@ impl Server {
     ///
     ///                 #[doc = concat!("Accessor for the ", std::stringify!([< $name:lower >]), " thread reporter")]
     ///                 pub fn [< $name:lower _profiler_lock >]() -> std::sync::MutexGuard<'static, puffin::GlobalProfiler> {
-    ///                     static [< $name _PROFILER >] : once_cell::sync::Lazy<std::sync::Mutex<puffin::GlobalProfiler>> = once_cell::sync::Lazy::new(Default::default);
+    ///                     static [< $name _PROFILER >] : std::sync::LazyLock<std::sync::Mutex<puffin::GlobalProfiler>> = std::sync::LazyLock::new(Default::default);
     ///                     [< $name _PROFILER >].lock().expect("poisoned std::sync::mutex")
     ///                 }
     ///