Measure LocalLayoutContexts in LayoutTask and LayoutWorkers.

The FreeType instances in layout workers are reasonably large and worth
measuring. The one in LayoutTask is smaller but it's easy to measure at the
same time. Sample output:
```
|    8.33 MiB -- pages
|       8.33 MiB -- url(file:///home/njn/moz/servo/../servo-static-suite/wikipedia/Guardians%20of%20the%20Galaxy%20(film)%20-%20Wikipedia,%20the%20free%20encyclopedia.html)
|          1.32 MiB -- layout-worker-0-local-context
|          1.31 MiB -- layout-worker-1-local-context
|          1.24 MiB -- layout-worker-3-local-context
|          1.17 MiB -- layout-worker-4-local-context
|          1.08 MiB -- layout-worker-2-local-context
|          1.06 MiB -- layout-worker-5-local-context
|          0.78 MiB -- paint-task
|             0.78 MiB -- buffer-map
|          0.38 MiB -- layout-task
|             0.30 MiB -- display-list
|             0.07 MiB -- local-context
```
This required adding a mechanism to WorkQueue to measure worker TLSes.
This commit is contained in:
Nicholas Nethercote 2015-06-10 17:31:28 -07:00
parent fdeebf86a1
commit 48a0725c01
5 changed files with 70 additions and 3 deletions

View file

@ -5,6 +5,7 @@
//! Data structure measurement.
use libc::{c_void, size_t};
use std::cell::RefCell;
use std::collections::LinkedList;
use std::mem::transmute;
use std::sync::Arc;
@ -92,6 +93,12 @@ impl<T: HeapSizeOf> HeapSizeOf for Arc<T> {
}
}
impl<T: HeapSizeOf> HeapSizeOf for RefCell<T> {
fn heap_size_of_children(&self) -> usize {
self.borrow().heap_size_of_children()
}
}
impl<T: HeapSizeOf> HeapSizeOf for Vec<T> {
fn heap_size_of_children(&self) -> usize {
heap_size_of(self.as_ptr() as *const c_void) +