script: Start replacing time with std::time and chrono (#30639)

* Replace `time` with `chrono` in `script/animation_timeline`

Signed-off-by: Auguste Baum <auguste.apple@gmail.com>

* Replace `time` with `std::time` in `script/script_thread.rs`

Signed-off-by: Auguste Baum <auguste.apple@gmail.com>

* Replace `time` with `std::time` and `chrono` in `script/script_thread.rs`

Signed-off-by: Auguste Baum <auguste.apple@gmail.com>

* Replace `time` with `std::time` in `script/script_runtime.rs`

Signed-off-by: Auguste Baum <auguste.apple@gmail.com>

* Replace `time` with `std::time` in `script/script_runtime.rs`

Signed-off-by: Auguste Baum <auguste.apple@gmail.com>

* Replace `time` with `std::time` in `script/dom/workerglobalscope.rs`

Signed-off-by: Auguste Baum <auguste.apple@gmail.com>

* Replace `time` with `chrono` in `script/dom/workerglobalscope.rs`

Signed-off-by: Auguste Baum <auguste.apple@gmail.com>

* Replace `time` with `std::time` in `script/dom/htmlmedialelement.rs`

Signed-off-by: Auguste Baum <auguste.apple@gmail.com>

* Replace `time` with `std::time` in `script/dom/htmlmedialelement.rs`

Signed-off-by: Auguste Baum <auguste.apple@gmail.com>

* Replace `time` with `std::time` in `script/dom/globalscope.rs`

Signed-off-by: Auguste Baum <auguste.apple@gmail.com>

* Replace `time` with `chrono` in `script/dom/globalscope.rs`

Signed-off-by: Auguste Baum <auguste.apple@gmail.com>

* Replace `time` with `std::time` in `script/dom/htmlformelement.rs`

Signed-off-by: Auguste Baum <auguste.apple@gmail.com>

* Replace `time` with `std::time` in `script/dom/htmlformelement.rs`

Signed-off-by: Auguste Baum <auguste.apple@gmail.com>

* Increase precision of animation timeline

* Some fixes

Use Instant a bit more and stop using chrono. Do not transition
`navigation_start_precise` to Instant yet as we need to coordinate this
across all crates.

---------

Signed-off-by: Auguste Baum <auguste.apple@gmail.com>
Co-authored-by: Martin Robinson <mrobinson@igalia.com>

components/script/dom/globalscope.rs

@@ -11,6 +11,7 @@ use std::rc::Rc;
 use std::sync::atomic::{AtomicBool, Ordering};
 use std::sync::Arc;
 use std::thread::JoinHandle;
+use std::time::Instant;
 use std::{mem, ptr};
 
 use content_security_policy::CspList;
@@ -54,7 +55,6 @@ use script_traits::{
     ScriptToConstellationChan, TimerEvent, TimerEventId, TimerSchedulerMsg, TimerSource,
 };
 use servo_url::{ImmutableOrigin, MutableOrigin, ServoUrl};
-use time::{get_time, Timespec};
 use uuid::Uuid;
 use webgpu::identity::WebGPUOpResult;
 use webgpu::{ErrorScopeId, WebGPUDevice};
@@ -203,8 +203,8 @@ pub struct GlobalScope {
     /// live updates from the worker.
     devtools_wants_updates: Cell<bool>,
 
-    /// Timers used by the Console API.
-    console_timers: DomRefCell<HashMap<DOMString, u64>>,
+    /// Timers (milliseconds) used by the Console API.
+    console_timers: DomRefCell<HashMap<DOMString, Instant>>,
 
     /// module map is used when importing JavaScript modules
     /// https://html.spec.whatwg.org/multipage/#concept-settings-object-module-map
@@ -2262,7 +2262,7 @@ impl GlobalScope {
         }
         match timers.entry(label) {
             Entry::Vacant(entry) => {
-                entry.insert(timestamp_in_ms(get_time()));
+                entry.insert(Instant::now());
                 Ok(())
             },
             Entry::Occupied(_) => Err(()),
@@ -2274,7 +2274,7 @@ impl GlobalScope {
             .borrow_mut()
             .remove(label)
             .ok_or(())
-            .map(|start| timestamp_in_ms(get_time()) - start)
+            .map(|start| (Instant::now() - start).as_millis() as u64)
     }
 
     /// Get an `&IpcSender<ScriptToDevtoolsControlMsg>` to send messages
@@ -3111,10 +3111,6 @@ impl GlobalScope {
     }
 }
 
-fn timestamp_in_ms(time: Timespec) -> u64 {
-    (time.sec * 1000 + (time.nsec / 1000000) as i64) as u64
-}
-
 /// Returns the Rust global scope from a JS global object.
 #[allow(unsafe_code)]
 unsafe fn global_scope_from_global(

components/script/dom/htmlformelement.rs

@@ -4,6 +4,7 @@
 
 use std::borrow::ToOwned;
 use std::cell::Cell;
+use std::time::{Duration, Instant};
 
 use dom_struct::dom_struct;
 use encoding_rs::{Encoding, UTF_8};
@@ -20,7 +21,6 @@ use servo_rand::random;
 use style::attr::AttrValue;
 use style::str::split_html_space_chars;
 use style_traits::dom::ElementState;
-use time::{now, Duration, Tm};
 
 use super::bindings::trace::{HashMapTracedValues, NoTrace};
 use crate::body::Extractable;
@@ -94,7 +94,7 @@ pub struct HTMLFormElement {
     elements: DomOnceCell<HTMLFormControlsCollection>,
     generation_id: Cell<GenerationId>,
     controls: DomRefCell<Vec<Dom<Element>>>,
-    past_names_map: DomRefCell<HashMapTracedValues<Atom, (Dom<Element>, NoTrace<Tm>)>>,
+    past_names_map: DomRefCell<HashMapTracedValues<Atom, (Dom<Element>, NoTrace<Instant>)>>,
     firing_submission_events: Cell<bool>,
     rel_list: MutNullableDom<DOMTokenList>,
 }
@@ -442,7 +442,7 @@ impl HTMLFormElementMethods for HTMLFormElement {
             name,
             (
                 Dom::from_ref(&*element_node.downcast::<Element>().unwrap()),
-                NoTrace(now()),
+                NoTrace(Instant::now()),
             ),
         );
 
@@ -556,7 +556,7 @@ impl HTMLFormElementMethods for HTMLFormElement {
             let entry = SourcedName {
                 name: key.clone(),
                 element: DomRoot::from_ref(&*val.0),
-                source: SourcedNameSource::Past(now() - val.1 .0), // calculate difference now()-val.1 to find age
+                source: SourcedNameSource::Past(Instant::now().duration_since(val.1 .0)),
             };
             sourced_names_vec.push(entry);
         }

components/script/dom/htmlmediaelement.rs

@@ -6,6 +6,7 @@ use std::cell::Cell;
 use std::collections::VecDeque;
 use std::rc::Rc;
 use std::sync::{Arc, Mutex};
+use std::time::{Duration, Instant};
 use std::{f64, mem};
 
 use dom_struct::dom_struct;
@@ -33,7 +34,6 @@ use servo_media::player::video::{VideoFrame, VideoFrameRenderer};
 use servo_media::player::{PlaybackState, Player, PlayerError, PlayerEvent, SeekLock, StreamType};
 use servo_media::{ClientContextId, ServoMedia, SupportsMediaType};
 use servo_url::ServoUrl;
-use time::{self, Duration, Timespec};
 use webrender_api::{
     ExternalImageData, ExternalImageId, ExternalImageType, ImageBufferKind, ImageData,
     ImageDescriptor, ImageDescriptorFlags, ImageFormat, ImageKey,
@@ -377,9 +377,8 @@ pub struct HTMLMediaElement {
     /// https://html.spec.whatwg.org/multipage/#dom-media-texttracks
     text_tracks_list: MutNullableDom<TextTrackList>,
     /// Time of last timeupdate notification.
-    #[ignore_malloc_size_of = "Defined in time"]
-    #[no_trace]
-    next_timeupdate_event: Cell<Timespec>,
+    #[ignore_malloc_size_of = "Defined in std::time"]
+    next_timeupdate_event: Cell<Instant>,
     /// Latest fetch request context.
     current_fetch_context: DomRefCell<Option<HTMLMediaElementFetchContext>>,
     /// Player Id reported the player thread
@@ -452,7 +451,7 @@ impl HTMLMediaElement {
             audio_tracks_list: Default::default(),
             video_tracks_list: Default::default(),
             text_tracks_list: Default::default(),
-            next_timeupdate_event: Cell::new(time::get_time() + Duration::milliseconds(250)),
+            next_timeupdate_event: Cell::new(Instant::now() + Duration::from_millis(250)),
             current_fetch_context: DomRefCell::new(None),
             id: Cell::new(0),
             media_controls_id: DomRefCell::new(None),
@@ -502,14 +501,14 @@ impl HTMLMediaElement {
     /// https://html.spec.whatwg.org/multipage/#time-marches-on
     fn time_marches_on(&self) {
         // Step 6.
-        if time::get_time() > self.next_timeupdate_event.get() {
+        if Instant::now() > self.next_timeupdate_event.get() {
             let window = window_from_node(self);
             window
                 .task_manager()
                 .media_element_task_source()
                 .queue_simple_event(self.upcast(), atom!("timeupdate"), &window);
             self.next_timeupdate_event
-                .set(time::get_time() + Duration::milliseconds(350));
+                .set(Instant::now() + Duration::from_millis(350));
         }
     }
 
@@ -2602,7 +2601,7 @@ struct HTMLMediaElementFetchListener {
     /// The generation of the media element when this fetch started.
     generation_id: u32,
     /// Time of last progress notification.
-    next_progress_event: Timespec,
+    next_progress_event: Instant,
     /// Timing data for this resource.
     resource_timing: ResourceFetchTiming,
     /// Url for the resource.
@@ -2751,13 +2750,13 @@ impl FetchResponseListener for HTMLMediaElementFetchListener {
 
         // https://html.spec.whatwg.org/multipage/#concept-media-load-resource step 4,
         // => "If mode is remote" step 2
-        if time::get_time() > self.next_progress_event {
+        if Instant::now() > self.next_progress_event {
             let window = window_from_node(&*elem);
             window
                 .task_manager()
                 .media_element_task_source()
                 .queue_simple_event(elem.upcast(), atom!("progress"), &window);
-            self.next_progress_event = time::get_time() + Duration::milliseconds(350);
+            self.next_progress_event = Instant::now() + Duration::from_millis(350);
         }
     }
 
@@ -2886,7 +2885,7 @@ impl HTMLMediaElementFetchListener {
             elem: Trusted::new(elem),
             metadata: None,
             generation_id: elem.generation_id.get(),
-            next_progress_event: time::get_time() + Duration::milliseconds(350),
+            next_progress_event: Instant::now() + Duration::from_millis(350),
             resource_timing: ResourceFetchTiming::new(ResourceTimingType::Resource),
             url,
             expected_content_length: None,