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-rw-r--r--components/constellation/pipeline.rs7
-rw-r--r--components/layout_thread/lib.rs67
-rw-r--r--components/layout_traits/lib.rs1
-rw-r--r--components/script/dom/htmliframeelement.rs2
-rw-r--r--components/script/dom/windowproxy.rs2
-rw-r--r--components/script/script_thread.rs2
-rw-r--r--components/script_layout_interface/message.rs1
-rw-r--r--components/script_traits/lib.rs2
-rw-r--r--components/style/Cargo.toml5
-rw-r--r--components/style/gecko/mod.rs1
-rw-r--r--components/style/global_style_data.rs (renamed from components/style/gecko/global_style_data.rs)42
-rw-r--r--components/style/lib.rs1
12 files changed, 56 insertions, 77 deletions
diff --git a/components/constellation/pipeline.rs b/components/constellation/pipeline.rs
index 589b4e6f521..bbbe095d918 100644
--- a/components/constellation/pipeline.rs
+++ b/components/constellation/pipeline.rs
@@ -219,7 +219,6 @@ impl Pipeline {
window_size: window_size,
pipeline_port: pipeline_port,
content_process_shutdown_chan: Some(layout_content_process_shutdown_chan),
- layout_threads: PREFS.get("layout.threads").as_u64().expect("count") as usize,
};
if let Err(e) =
@@ -556,12 +555,6 @@ impl UnprivilegedPipelineContent {
Some(self.layout_content_process_shutdown_chan),
self.webrender_api_sender,
self.webrender_document,
- self.prefs
- .get("layout.threads")
- .expect("exists")
- .value()
- .as_u64()
- .expect("count") as usize,
paint_time_metrics,
);
diff --git a/components/layout_thread/lib.rs b/components/layout_thread/lib.rs
index 0d0293d86aa..5b82577932f 100644
--- a/components/layout_thread/lib.rs
+++ b/components/layout_thread/lib.rs
@@ -102,10 +102,11 @@ use std::thread;
use std::time::Duration;
use style::animation::Animation;
use style::context::{QuirksMode, RegisteredSpeculativePainter, RegisteredSpeculativePainters};
-use style::context::{SharedStyleContext, StyleSystemOptions, ThreadLocalStyleContextCreationInfo};
+use style::context::{SharedStyleContext, ThreadLocalStyleContextCreationInfo};
use style::dom::{ShowSubtree, ShowSubtreeDataAndPrimaryValues, TElement, TNode};
use style::driver;
use style::error_reporting::RustLogReporter;
+use style::global_style_data::{GLOBAL_STYLE_DATA, STYLE_THREAD_POOL};
use style::invalidation::element::restyle_hints::RestyleHint;
use style::logical_geometry::LogicalPoint;
use style::media_queries::{Device, MediaList, MediaType};
@@ -178,9 +179,6 @@ pub struct LayoutThread {
/// Is this the first reflow in this LayoutThread?
first_reflow: Cell<bool>,
- /// The workers that we use for parallel operation.
- parallel_traversal: Option<rayon::ThreadPool>,
-
/// Flag to indicate whether to use parallel operations
parallel_flag: bool,
@@ -238,10 +236,6 @@ pub struct LayoutThread {
/// only be a test-mode timer during testing for animations.
timer: Timer,
- // Number of layout threads. This is copied from `servo_config::opts`, but we'd
- // rather limit the dependency on that module here.
- layout_threads: usize,
-
/// Paint time metrics.
paint_time_metrics: PaintTimeMetrics,
@@ -270,7 +264,6 @@ impl LayoutThreadFactory for LayoutThread {
content_process_shutdown_chan: Option<IpcSender<()>>,
webrender_api_sender: webrender_api::RenderApiSender,
webrender_document: webrender_api::DocumentId,
- layout_threads: usize,
paint_time_metrics: PaintTimeMetrics,
) {
thread::Builder::new()
@@ -308,7 +301,6 @@ impl LayoutThreadFactory for LayoutThread {
mem_profiler_chan.clone(),
webrender_api_sender,
webrender_document,
- layout_threads,
paint_time_metrics,
);
@@ -470,7 +462,6 @@ impl LayoutThread {
mem_profiler_chan: profile_mem::ProfilerChan,
webrender_api_sender: webrender_api::RenderApiSender,
webrender_document: webrender_api::DocumentId,
- layout_threads: usize,
paint_time_metrics: PaintTimeMetrics,
) -> LayoutThread {
// The device pixel ratio is incorrect (it does not have the hidpi value),
@@ -481,17 +472,6 @@ impl LayoutThread {
TypedScale::new(opts::get().device_pixels_per_px.unwrap_or(1.0)),
);
- let workers = rayon::ThreadPoolBuilder::new()
- .num_threads(layout_threads)
- .start_handler(|_| thread_state::initialize_layout_worker_thread())
- .build();
- let parallel_traversal = if layout_threads > 1 {
- Some(workers.expect("ThreadPool creation failed"))
- } else {
- None
- };
- debug!("Possible layout Threads: {}", layout_threads);
-
// Create the channel on which new animations can be sent.
let (new_animations_sender, new_animations_receiver) = unbounded();
@@ -521,7 +501,6 @@ impl LayoutThread {
first_reflow: Cell::new(true),
font_cache_receiver: font_cache_receiver,
font_cache_sender: ipc_font_cache_sender,
- parallel_traversal: parallel_traversal,
parallel_flag: true,
generation: Cell::new(0),
new_animations_sender: new_animations_sender,
@@ -563,7 +542,6 @@ impl LayoutThread {
} else {
Timer::new()
},
- layout_threads: layout_threads,
paint_time_metrics: paint_time_metrics,
layout_query_waiting_time: Histogram::new(),
}
@@ -596,8 +574,8 @@ impl LayoutThread {
id: self.id,
style_context: SharedStyleContext {
stylist: &self.stylist,
- options: StyleSystemOptions::default(),
- guards: guards,
+ options: GLOBAL_STYLE_DATA.options.clone(),
+ guards,
visited_styles_enabled: false,
running_animations: self.running_animations.clone(),
expired_animations: self.expired_animations.clone(),
@@ -881,7 +859,6 @@ impl LayoutThread {
info.content_process_shutdown_chan,
self.webrender_api.clone_sender(),
self.webrender_document,
- info.layout_threads,
info.paint_time_metrics,
);
}
@@ -924,8 +901,6 @@ impl LayoutThread {
);
self.root_flow.borrow_mut().take();
- // Drop the rayon threadpool if present.
- let _ = self.parallel_traversal.take();
self.background_hang_monitor.unregister();
}
@@ -1166,7 +1141,7 @@ impl LayoutThread {
// Parallelize if there's more than 750 objects based on rzambre's suggestion
// https://github.com/servo/servo/issues/10110
- self.parallel_flag = self.layout_threads > 1 && data.dom_count > 750;
+ self.parallel_flag = data.dom_count > 750;
debug!("layout: received layout request for: {}", self.url);
debug!("Number of objects in DOM: {}", data.dom_count);
debug!("layout: parallel? {}", self.parallel_flag);
@@ -1373,10 +1348,13 @@ impl LayoutThread {
// Create a layout context for use throughout the following passes.
let mut layout_context = self.build_layout_context(guards.clone(), true, &map);
- let thread_pool = if self.parallel_flag {
- self.parallel_traversal.as_ref()
+ let (thread_pool, num_threads) = if self.parallel_flag {
+ (
+ STYLE_THREAD_POOL.style_thread_pool.as_ref(),
+ STYLE_THREAD_POOL.num_threads,
+ )
} else {
- None
+ (None, 1)
};
let traversal = RecalcStyleAndConstructFlows::new(layout_context);
@@ -1404,14 +1382,14 @@ impl LayoutThread {
},
);
// TODO(pcwalton): Measure energy usage of text shaping, perhaps?
- let text_shaping_time = (font::get_and_reset_text_shaping_performance_counter() as u64) /
- (self.layout_threads as u64);
+ let text_shaping_time =
+ font::get_and_reset_text_shaping_performance_counter() / num_threads;
profile_time::send_profile_data(
profile_time::ProfilerCategory::LayoutTextShaping,
self.profiler_metadata(),
&self.time_profiler_chan,
0,
- text_shaping_time,
+ text_shaping_time as u64,
0,
0,
);
@@ -1742,12 +1720,16 @@ impl LayoutThread {
|| {
let profiler_metadata = self.profiler_metadata();
- if let (true, Some(traversal)) =
- (self.parallel_flag, self.parallel_traversal.as_ref())
- {
+ let thread_pool = if self.parallel_flag {
+ STYLE_THREAD_POOL.style_thread_pool.as_ref()
+ } else {
+ None
+ };
+
+ if let Some(pool) = thread_pool {
// Parallel mode.
LayoutThread::solve_constraints_parallel(
- traversal,
+ pool,
FlowRef::deref_mut(root_flow),
profiler_metadata,
self.time_profiler_chan.clone(),
@@ -1913,7 +1895,8 @@ fn get_ua_stylesheets() -> Result<UserAgentStylesheets, &'static str> {
))))
}
- let shared_lock = SharedRwLock::new();
+ let shared_lock = &GLOBAL_STYLE_DATA.shared_lock;
+
// FIXME: presentational-hints.css should be at author origin with zero specificity.
// (Does it make a difference?)
let mut user_or_user_agent_stylesheets = vec![
@@ -1958,7 +1941,7 @@ fn get_ua_stylesheets() -> Result<UserAgentStylesheets, &'static str> {
)?;
Ok(UserAgentStylesheets {
- shared_lock: shared_lock,
+ shared_lock: shared_lock.clone(),
user_or_user_agent_stylesheets: user_or_user_agent_stylesheets,
quirks_mode_stylesheet: quirks_mode_stylesheet,
})
diff --git a/components/layout_traits/lib.rs b/components/layout_traits/lib.rs
index 5e58938a277..a1f33bdf827 100644
--- a/components/layout_traits/lib.rs
+++ b/components/layout_traits/lib.rs
@@ -43,7 +43,6 @@ pub trait LayoutThreadFactory {
content_process_shutdown_chan: Option<IpcSender<()>>,
webrender_api_sender: webrender_api::RenderApiSender,
webrender_document: webrender_api::DocumentId,
- layout_threads: usize,
paint_time_metrics: PaintTimeMetrics,
);
}
diff --git a/components/script/dom/htmliframeelement.rs b/components/script/dom/htmliframeelement.rs
index 288584932f0..0e23a04fc39 100644
--- a/components/script/dom/htmliframeelement.rs
+++ b/components/script/dom/htmliframeelement.rs
@@ -38,7 +38,6 @@ use script_traits::{
WindowSizeData,
};
use script_traits::{NewLayoutInfo, ScriptMsg};
-use servo_config::prefs::PREFS;
use servo_url::ServoUrl;
use std::cell::Cell;
use style::attr::{AttrValue, LengthOrPercentageOrAuto};
@@ -204,7 +203,6 @@ impl HTMLIFrameElement {
},
device_pixel_ratio: window.device_pixel_ratio(),
},
- layout_threads: PREFS.get("layout.threads").as_u64().expect("count") as usize,
};
self.pipeline_id.set(Some(new_pipeline_id));
diff --git a/components/script/dom/windowproxy.rs b/components/script/dom/windowproxy.rs
index 65362ee0d17..8b0af9a147e 100644
--- a/components/script/dom/windowproxy.rs
+++ b/components/script/dom/windowproxy.rs
@@ -45,7 +45,6 @@ use msg::constellation_msg::BrowsingContextId;
use msg::constellation_msg::PipelineId;
use msg::constellation_msg::TopLevelBrowsingContextId;
use script_traits::{AuxiliaryBrowsingContextLoadInfo, LoadData, NewLayoutInfo, ScriptMsg};
-use servo_config::prefs::PREFS;
use servo_url::ServoUrl;
use std::cell::Cell;
use std::ptr;
@@ -290,7 +289,6 @@ impl WindowProxy {
pipeline_port: pipeline_receiver,
content_process_shutdown_chan: None,
window_size: window.window_size(),
- layout_threads: PREFS.get("layout.threads").as_u64().expect("count") as usize,
};
let constellation_msg = ScriptMsg::ScriptNewAuxiliary(load_info, pipeline_sender);
window.send_to_constellation(constellation_msg);
diff --git a/components/script/script_thread.rs b/components/script/script_thread.rs
index 50f6135ff52..8383caa9800 100644
--- a/components/script/script_thread.rs
+++ b/components/script/script_thread.rs
@@ -1910,7 +1910,6 @@ impl ScriptThread {
window_size,
pipeline_port,
content_process_shutdown_chan,
- layout_threads,
} = new_layout_info;
let layout_pair = unbounded();
@@ -1927,7 +1926,6 @@ impl ScriptThread {
script_chan: self.control_chan.clone(),
image_cache: self.image_cache.clone(),
content_process_shutdown_chan: content_process_shutdown_chan,
- layout_threads: layout_threads,
paint_time_metrics: PaintTimeMetrics::new(
new_pipeline_id,
self.time_profiler_chan.clone(),
diff --git a/components/script_layout_interface/message.rs b/components/script_layout_interface/message.rs
index ae346041439..d17a8fc5e2f 100644
--- a/components/script_layout_interface/message.rs
+++ b/components/script_layout_interface/message.rs
@@ -220,6 +220,5 @@ pub struct NewLayoutThreadInfo {
pub script_chan: IpcSender<ConstellationControlMsg>,
pub image_cache: Arc<dyn ImageCache>,
pub content_process_shutdown_chan: Option<IpcSender<()>>,
- pub layout_threads: usize,
pub paint_time_metrics: PaintTimeMetrics,
}
diff --git a/components/script_traits/lib.rs b/components/script_traits/lib.rs
index 2dfc2378d2f..45e31ca3a0a 100644
--- a/components/script_traits/lib.rs
+++ b/components/script_traits/lib.rs
@@ -195,8 +195,6 @@ pub struct NewLayoutInfo {
pub pipeline_port: IpcReceiver<LayoutControlMsg>,
/// A shutdown channel so that layout can tell the content process to shut down when it's done.
pub content_process_shutdown_chan: Option<IpcSender<()>>,
- /// Number of threads to use for layout.
- pub layout_threads: usize,
}
/// When a pipeline is closed, should its browsing context be discarded too?
diff --git a/components/style/Cargo.toml b/components/style/Cargo.toml
index 0acd6044c78..7feaf90f992 100644
--- a/components/style/Cargo.toml
+++ b/components/style/Cargo.toml
@@ -16,8 +16,7 @@ path = "lib.rs"
doctest = false
[features]
-gecko = ["num_cpus",
- "style_traits/gecko", "fallible/known_system_malloc"]
+gecko = ["style_traits/gecko", "fallible/known_system_malloc"]
use_bindgen = ["bindgen", "regex", "toml"]
servo = ["serde", "style_traits/servo", "servo_atoms", "servo_config", "html5ever",
"cssparser/serde", "encoding_rs", "malloc_size_of/servo", "arrayvec/use_union",
@@ -47,7 +46,7 @@ log = "0.4"
malloc_size_of = { path = "../malloc_size_of" }
malloc_size_of_derive = { path = "../malloc_size_of_derive" }
matches = "0.1"
-num_cpus = {version = "1.1.0", optional = true}
+num_cpus = {version = "1.1.0"}
num-integer = "0.1"
num-traits = "0.2"
num-derive = "0.2"
diff --git a/components/style/gecko/mod.rs b/components/style/gecko/mod.rs
index 28472642a3d..1051f84fc52 100644
--- a/components/style/gecko/mod.rs
+++ b/components/style/gecko/mod.rs
@@ -10,7 +10,6 @@ mod non_ts_pseudo_class_list;
pub mod arc_types;
pub mod conversions;
pub mod data;
-pub mod global_style_data;
pub mod media_features;
pub mod media_queries;
pub mod pseudo_element;
diff --git a/components/style/gecko/global_style_data.rs b/components/style/global_style_data.rs
index e6682e9370e..7928db13d81 100644
--- a/components/style/gecko/global_style_data.rs
+++ b/components/style/global_style_data.rs
@@ -5,15 +5,13 @@
//! Global style data
use crate::context::StyleSystemOptions;
+#[cfg(feature = "gecko")]
use crate::gecko_bindings::bindings;
use crate::parallel::STYLE_THREAD_STACK_SIZE_KB;
use crate::shared_lock::SharedRwLock;
use crate::thread_state;
-use num_cpus;
use rayon;
-use std::cmp;
use std::env;
-use std::ffi::CString;
/// Global style data
pub struct GlobalStyleData {
@@ -37,20 +35,22 @@ fn thread_name(index: usize) -> String {
format!("StyleThread#{}", index)
}
-fn thread_startup(index: usize) {
+fn thread_startup(_index: usize) {
thread_state::initialize_layout_worker_thread();
+ #[cfg(feature = "gecko")]
unsafe {
+ use std::ffi::CString;
+
bindings::Gecko_SetJemallocThreadLocalArena(true);
- }
- let name = thread_name(index);
- let name = CString::new(name).unwrap();
- unsafe {
+ let name = thread_name(_index);
+ let name = CString::new(name).unwrap();
// Gecko_RegisterProfilerThread copies the passed name here.
bindings::Gecko_RegisterProfilerThread(name.as_ptr());
}
}
fn thread_shutdown(_: usize) {
+ #[cfg(feature = "gecko")]
unsafe {
bindings::Gecko_UnregisterProfilerThread();
bindings::Gecko_SetJemallocThreadLocalArena(false);
@@ -64,12 +64,26 @@ lazy_static! {
.map(|s| s.parse::<usize>().expect("invalid STYLO_THREADS value"));
let mut num_threads = match stylo_threads {
Ok(num) => num,
- // The default heuristic is num_virtual_cores * .75. This gives us
- // three threads on a hyper-threaded dual core, and six threads on
- // a hyper-threaded quad core. The performance benefit of additional
- // threads seems to level off at around six, so we cap it there on
- // many-core machines (see bug 1431285 comment 14).
- _ => cmp::min(cmp::max(num_cpus::get() * 3 / 4, 1), 6),
+ #[cfg(feature = "servo")]
+ _ => {
+ // We always set this pref on startup, before layout or script
+ // have had a chance of accessing (and thus creating) the
+ // thread-pool.
+ use servo_config::prefs::PREFS;
+ PREFS.get("layout.threads").as_u64().unwrap() as usize
+ }
+ #[cfg(feature = "gecko")]
+ _ => {
+ // The default heuristic is num_virtual_cores * .75. This gives
+ // us three threads on a hyper-threaded dual core, and six
+ // threads on a hyper-threaded quad core. The performance
+ // benefit of additional threads seems to level off at around
+ // six, so we cap it there on many-core machines
+ // (see bug 1431285 comment 14).
+ use num_cpus;
+ use std::cmp;
+ cmp::min(cmp::max(num_cpus::get() * 3 / 4, 1), 6)
+ }
};
// If num_threads is one, there's no point in creating a thread pool, so
diff --git a/components/style/lib.rs b/components/style/lib.rs
index df4f090ca4b..d4a296bada5 100644
--- a/components/style/lib.rs
+++ b/components/style/lib.rs
@@ -133,6 +133,7 @@ pub mod font_metrics;
#[cfg(feature = "gecko")]
#[allow(unsafe_code)]
pub mod gecko_bindings;
+pub mod global_style_data;
pub mod hash;
pub mod invalidation;
#[allow(missing_docs)] // TODO.
generated by cgit v1.2.3 (git 2.25.1) at 2025-05-29 17:19:52 +0000