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Support GC zeal

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This commit is contained in:
Anthony Ramine 2016-05-10 01:24:40 +02:00
parent 9eb7162b8a
commit afd29b7c1e
2 changed files with 24 additions and 0 deletions
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22
components/script/script_runtime.rs
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@ -117,6 +117,8 @@ pub unsafe fn new_rt_and_cx() -> Runtime {
// Pre barriers aren't working correctly at the moment
DisableIncrementalGC(runtime.rt());
set_gc_zeal_options(runtime.cx());
// Enable or disable the JITs.
let rt_opts = &mut *RuntimeOptionsRef(runtime.rt());
if let Some(val) = get_pref("js.baseline.enabled").as_boolean() {
@ -377,3 +379,23 @@ unsafe extern fn trace_rust_roots(tr: *mut JSTracer, _data: *mut os::raw::c_void
trace_roots(tr);
debug!("done custom root handler");
}
#[allow(unsafe_code)]
#[cfg(feature = "debugmozjs")]
unsafe fn set_gc_zeal_options(cx: *mut JSContext) {
use js::jsapi::{JS_DEFAULT_ZEAL_FREQ, JS_SetGCZeal};
let level = match get_pref("js.mem.gc.zeal.level").as_i64() {
Some(level @ 0...14) => level as u8,
_ => return,
};
let frequency = match get_pref("js.mem.gc.zeal.frequency").as_i64() {
Some(frequency) if frequency >= 0 => frequency as u32,
_ => JS_DEFAULT_ZEAL_FREQ,
};
JS_SetGCZeal(cx, level, frequency);
}
#[allow(unsafe_code)]
#[cfg(not(feature = "debugmozjs"))]
unsafe fn set_gc_zeal_options(_: *mut JSContext) {}

2
resources/prefs.json
View file

@ -42,6 +42,8 @@
"js.mem.gc.decommit_threshold_mb": 32,
"js.mem.gc.empty_chunk_count_min": 1,
"js.mem.gc.empty_chunk_count_max": 30,
"js.mem.gc.zeal.level": 0,
"js.mem.gc.zeal.frequency": 100,
"layout.columns.enabled": false,
"layout.column-width.enabled": false,
"layout.column-count.enabled": false,