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Measure memory usage of Stylo's Rule Tree.

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This commit is contained in:
Nicholas Nethercote 2017-08-30 21:46:15 +10:00
parent 5dee83d54d
commit e08829703a
7 changed files with 126 additions and 10 deletions
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16
components/style/rule_tree/mod.rs
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@ -17,7 +17,7 @@ use std::io::{self, Write};
use std::mem;
use std::ptr;
use std::sync::atomic::{AtomicPtr, AtomicUsize, Ordering};
use stylesheets::StyleRule;
use stylesheets::{MallocSizeOf, MallocSizeOfFn, StyleRule};
use thread_state;
/// The rule tree, the structure servo uses to preserve the results of selector
@ -62,6 +62,12 @@ impl Drop for RuleTree {
}
}
impl MallocSizeOf for RuleTree {
fn malloc_size_of_children(&self, malloc_size_of: MallocSizeOfFn) -> usize {
self.root.get().malloc_size_of_including_self(malloc_size_of)
}
}
/// A style source for the rule node. It can either be a CSS style rule or a
/// declaration block.
///
@ -781,6 +787,14 @@ impl RuleNode {
}
}
}
fn malloc_size_of_including_self(&self, malloc_size_of: MallocSizeOfFn) -> usize {
let mut n = unsafe { malloc_size_of(self as *const _ as *const _) };
for child in self.iter_children() {
n += unsafe { (*child.ptr()).malloc_size_of_including_self(malloc_size_of) };
}
n
}
}
#[derive(Clone)]