Stop relying on linking details of std’s default allocator

We’ve been bitten before by symbol names changing:
https://github.com/servo/heapsize/pull/46
and upstream is planning to stop using jemalloc by default:
https://github.com/rust-lang/rust/issues/33082#issuecomment-309781465

So use the (relatively) new `#[global_allocator]` attribute
to explicitly select the system allocator on Windows
and jemalloc (now in an external crate) on other platforms.
This choice matches current defaults.
This commit is contained in:
Simon Sapin 2017-10-18 13:38:07 +02:00
parent 4c538b642e
commit 959ce482dd
20 changed files with 158 additions and 62 deletions

View file

@ -73,7 +73,7 @@ use js::jsapi::{JSAutoCompartment, JSContext, JS_SetWrapObjectCallbacks};
use js::jsapi::{JSTracer, SetWindowProxyClass};
use js::jsval::UndefinedValue;
use js::rust::Runtime;
use malloc_size_of::{malloc_size_of, MallocSizeOfOps};
use malloc_size_of::MallocSizeOfOps;
use mem::malloc_size_of_including_self;
use metrics::PaintTimeMetrics;
use microtask::{MicrotaskQueue, Microtask};
@ -1506,7 +1506,7 @@ impl ScriptThread {
let mut reports = vec![];
// Servo uses vanilla jemalloc, which doesn't have a
// malloc_enclosing_size_of function.
let mut ops = MallocSizeOfOps::new(malloc_size_of, None, None);
let mut ops = MallocSizeOfOps::new(::servo_allocator::usable_size, None, None);
for (_, document) in self.documents.borrow().iter() {
let current_url = document.url();