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Add trace hooks for all generated derivatives of Node.

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This commit is contained in:
Josh Matthews 2013-08-29 15:21:27 -04:00
parent a567eb007d
commit 329f92a41d
5 changed files with 143 additions and 14 deletions
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35
src/components/script/dom/bindings/node.rs
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@ -2,15 +2,16 @@
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
use dom::bindings::utils::{CacheableWrapper, WrapperCache};
use dom::bindings::utils::{CacheableWrapper, WrapperCache, Traceable};
use dom::element::*;
use dom::types::*;
use dom::node::{AbstractNode, ElementNodeTypeId, TextNodeTypeId, CommentNodeTypeId};
use dom::node::{DoctypeNodeTypeId, ScriptView};
use std::cast;
use std::libc;
use std::ptr;
use js::jsapi::{JSContext, JSObject};
use js::jsapi::{JSContext, JSObject, JSTracer, JSTRACE_OBJECT, JS_CallTracer};
use servo_util::tree::TreeNodeRef;
macro_rules! generate_element(
@ -107,3 +108,33 @@ impl CacheableWrapper for AbstractNode<ScriptView> {
fail!(~"need to implement wrapping");
}
}
impl Traceable for Node<ScriptView> {
fn trace(&self, tracer: *mut JSTracer) {
#[fixed_stack_segment]
fn trace_node(tracer: *mut JSTracer, node: Option<AbstractNode<ScriptView>>, name: &str) {
if node.is_none() {
return;
}
debug!("tracing %s", name);
let mut node = node.unwrap();
let cache = node.get_wrappercache();
let wrapper = cache.get_wrapper();
assert!(wrapper.is_not_null());
unsafe {
(*tracer).debugPrinter = ptr::null();
(*tracer).debugPrintIndex = -1;
do name.to_c_str().with_ref |name| {
(*tracer).debugPrintArg = name as *libc::c_void;
JS_CallTracer(cast::transmute(tracer), wrapper, JSTRACE_OBJECT as u32);
}
}
}
error!("tracing %p?:", self.wrapper.get_wrapper());
trace_node(tracer, self.parent_node, "parent");
trace_node(tracer, self.first_child, "first child");
trace_node(tracer, self.last_child, "last child");
trace_node(tracer, self.next_sibling, "next sibling");
trace_node(tracer, self.prev_sibling, "prev sibling");
}
}