Adding upstream version 1:115.7.0.upstream/1%115.7.0upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 214 insertions, 0 deletions

diff --git a/servo/tests/unit/style/rule_tree/bench.rs b/servo/tests/unit/style/rule_tree/bench.rs
new file mode 100644
index 0000000000..d7b024a1b4
--- /dev/null
+++ b/servo/tests/unit/style/rule_tree/bench.rs
@@ -0,0 +1,214 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at https://mozilla.org/MPL/2.0/. */
+
+use cssparser::SourceLocation;
+use rayon;
+use servo_arc::Arc;
+use servo_url::ServoUrl;
+use style::context::QuirksMode;
+use style::error_reporting::{ParseErrorReporter, ContextualParseError};
+use style::media_queries::MediaList;
+use style::properties::{longhands, Importance, PropertyDeclaration, PropertyDeclarationBlock};
+use style::rule_tree::{CascadeLevel, RuleTree, StrongRuleNode, StyleSource};
+use style::shared_lock::SharedRwLock;
+use style::stylesheets::{Origin, Stylesheet, CssRule};
+use style::thread_state::{self, ThreadState};
+use test::{self, Bencher};
+
+struct ErrorringErrorReporter;
+impl ParseErrorReporter for ErrorringErrorReporter {
+    fn report_error(&self,
+                    url: &ServoUrl,
+                    location: SourceLocation,
+                    error: ContextualParseError) {
+        panic!("CSS error: {}\t\n{}:{} {}", url.as_str(), location.line, location.column, error);
+    }
+}
+
+struct AutoGCRuleTree<'a>(&'a RuleTree);
+
+impl<'a> AutoGCRuleTree<'a> {
+    fn new(r: &'a RuleTree) -> Self {
+        AutoGCRuleTree(r)
+    }
+}
+
+impl<'a> Drop for AutoGCRuleTree<'a> {
+    fn drop(&mut self) {
+        unsafe {
+            self.0.gc();
+            assert!(::std::thread::panicking() ||
+                    !self.0.root().has_children_for_testing(),
+                    "No rule nodes other than the root shall remain!");
+        }
+    }
+}
+
+fn parse_rules(css: &str) -> Vec<(StyleSource, CascadeLevel)> {
+    let lock = SharedRwLock::new();
+    let media = Arc::new(lock.wrap(MediaList::empty()));
+
+    let s = Stylesheet::from_str(css,
+                                 ServoUrl::parse("http://localhost").unwrap(),
+                                 Origin::Author,
+                                 media,
+                                 lock,
+                                 None,
+                                 Some(&ErrorringErrorReporter),
+                                 QuirksMode::NoQuirks,
+                                 0);
+    let guard = s.shared_lock.read();
+    let rules = s.contents.rules.read_with(&guard);
+    rules.0.iter().filter_map(|rule| {
+        match *rule {
+            CssRule::Style(ref style_rule) => Some((
+                StyleSource::from_rule(style_rule.clone()),
+                CascadeLevel::UserNormal,
+            )),
+            _ => None,
+        }
+    }).collect()
+}
+
+fn test_insertion(rule_tree: &RuleTree, rules: Vec<(StyleSource, CascadeLevel)>) -> StrongRuleNode {
+    rule_tree.insert_ordered_rules(rules.into_iter())
+}
+
+fn test_insertion_style_attribute(rule_tree: &RuleTree, rules: &[(StyleSource, CascadeLevel)],
+                                  shared_lock: &SharedRwLock)
+                                  -> StrongRuleNode {
+    let mut rules = rules.to_vec();
+    rules.push((StyleSource::from_declarations(Arc::new(shared_lock.wrap(PropertyDeclarationBlock::with_one(
+        PropertyDeclaration::Display(
+            longhands::display::SpecifiedValue::Block),
+        Importance::Normal
+    )))), CascadeLevel::UserNormal));
+    test_insertion(rule_tree, rules)
+}
+
+#[bench]
+fn bench_insertion_basic(b: &mut Bencher) {
+    let r = RuleTree::new();
+    thread_state::initialize(ThreadState::SCRIPT);
+
+    let rules_matched = parse_rules(
+        ".foo { width: 200px; } \
+         .bar { height: 500px; } \
+         .baz { display: block; }");
+
+    b.iter(|| {
+        let _gc = AutoGCRuleTree::new(&r);
+
+        for _ in 0..(4000 + 400) {
+            test::black_box(test_insertion(&r, rules_matched.clone()));
+        }
+    })
+}
+
+#[bench]
+fn bench_insertion_basic_per_element(b: &mut Bencher) {
+    let r = RuleTree::new();
+    thread_state::initialize(ThreadState::SCRIPT);
+
+    let rules_matched = parse_rules(
+        ".foo { width: 200px; } \
+         .bar { height: 500px; } \
+         .baz { display: block; }");
+
+    b.iter(|| {
+        let _gc = AutoGCRuleTree::new(&r);
+
+        test::black_box(test_insertion(&r, rules_matched.clone()));
+    });
+}
+
+#[bench]
+fn bench_expensive_insertion(b: &mut Bencher) {
+    let r = RuleTree::new();
+    thread_state::initialize(ThreadState::SCRIPT);
+
+    // This test case tests a case where you style a bunch of siblings
+    // matching the same rules, with a different style attribute each
+    // one.
+    let rules_matched = parse_rules(
+        ".foo { width: 200px; } \
+         .bar { height: 500px; } \
+         .baz { display: block; }");
+
+    let shared_lock = SharedRwLock::new();
+    b.iter(|| {
+        let _gc = AutoGCRuleTree::new(&r);
+
+        for _ in 0..(4000 + 400) {
+            test::black_box(test_insertion_style_attribute(&r, &rules_matched, &shared_lock));
+        }
+    });
+}
+
+#[bench]
+fn bench_insertion_basic_parallel(b: &mut Bencher) {
+    let r = RuleTree::new();
+    thread_state::initialize(ThreadState::SCRIPT);
+
+    let rules_matched = parse_rules(
+        ".foo { width: 200px; } \
+         .bar { height: 500px; } \
+         .baz { display: block; }");
+
+    b.iter(|| {
+        let _gc = AutoGCRuleTree::new(&r);
+
+        rayon::scope(|s| {
+            for _ in 0..4 {
+                s.spawn(|s| {
+                    for _ in 0..1000 {
+                        test::black_box(test_insertion(&r,
+                                                       rules_matched.clone()));
+                    }
+                    s.spawn(|_| {
+                        for _ in 0..100 {
+                            test::black_box(test_insertion(&r,
+                                                           rules_matched.clone()));
+                        }
+                    })
+                })
+            }
+        });
+    });
+}
+
+#[bench]
+fn bench_expensive_insertion_parallel(b: &mut Bencher) {
+    let r = RuleTree::new();
+    thread_state::initialize(ThreadState::SCRIPT);
+
+    let rules_matched = parse_rules(
+        ".foo { width: 200px; } \
+         .bar { height: 500px; } \
+         .baz { display: block; }");
+
+    let shared_lock = SharedRwLock::new();
+    b.iter(|| {
+        let _gc = AutoGCRuleTree::new(&r);
+
+        rayon::scope(|s| {
+            for _ in 0..4 {
+                s.spawn(|s| {
+                    for _ in 0..1000 {
+                        test::black_box(test_insertion_style_attribute(&r,
+                                                                       &rules_matched,
+                                                                       &shared_lock));
+                    }
+                    s.spawn(|_| {
+                        for _ in 0..100 {
+                            test::black_box(test_insertion_style_attribute(&r,
+                                                                           &rules_matched,
+                                                                           &shared_lock));
+                        }
+                    })
+                })
+            }
+        });
+    });
+}