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/* This Source Code Form is subject to the terms of the Mozilla Public
* 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 devtools_traits::{ScriptToDevtoolsControlMsg, WorkerId};
use dom::bindings::cell::DOMRefCell;
use dom::bindings::js::{JS, MutNullableHeap, Root};
use dom::bindings::reflector::Reflectable;
use dom::bindings::str::DOMString;
use dom::crypto::Crypto;
use dom::eventtarget::EventTarget;
use ipc_channel::ipc::IpcSender;
use js::jsapi::{JS_GetContext, JS_GetObjectRuntime, JSContext};
use profile_traits::{mem, time};
use script_traits::{ScriptMsg as ConstellationMsg, TimerEventRequest};
use std::cell::Cell;
use std::collections::HashMap;
use std::collections::hash_map::Entry;
use time::{Timespec, get_time};
#[dom_struct]
pub struct GlobalScope {
eventtarget: EventTarget,
crypto: MutNullableHeap<JS<Crypto>>,
next_worker_id: Cell<WorkerId>,
/// A flag to indicate whether the developer tools has requested
/// live updates from the worker.
devtools_wants_updates: Cell<bool>,
/// Timers used by the Console API.
console_timers: DOMRefCell<HashMap<DOMString, u64>>,
/// For providing instructions to an optional devtools server.
#[ignore_heap_size_of = "channels are hard"]
devtools_chan: Option<IpcSender<ScriptToDevtoolsControlMsg>>,
/// For sending messages to the memory profiler.
#[ignore_heap_size_of = "channels are hard"]
mem_profiler_chan: mem::ProfilerChan,
/// For sending messages to the time profiler.
#[ignore_heap_size_of = "channels are hard"]
time_profiler_chan: time::ProfilerChan,
/// A handle for communicating messages to the constellation thread.
#[ignore_heap_size_of = "channels are hard"]
constellation_chan: IpcSender<ConstellationMsg>,
#[ignore_heap_size_of = "channels are hard"]
scheduler_chan: IpcSender<TimerEventRequest>,
}
impl GlobalScope {
pub fn new_inherited(
devtools_chan: Option<IpcSender<ScriptToDevtoolsControlMsg>>,
mem_profiler_chan: mem::ProfilerChan,
time_profiler_chan: time::ProfilerChan,
constellation_chan: IpcSender<ConstellationMsg>,
scheduler_chan: IpcSender<TimerEventRequest>)
-> Self {
GlobalScope {
eventtarget: EventTarget::new_inherited(),
crypto: Default::default(),
next_worker_id: Cell::new(WorkerId(0)),
devtools_wants_updates: Default::default(),
console_timers: DOMRefCell::new(Default::default()),
devtools_chan: devtools_chan,
mem_profiler_chan: mem_profiler_chan,
time_profiler_chan: time_profiler_chan,
constellation_chan: constellation_chan,
scheduler_chan: scheduler_chan,
}
}
#[allow(unsafe_code)]
pub fn get_cx(&self) -> *mut JSContext {
unsafe {
let runtime = JS_GetObjectRuntime(
self.reflector().get_jsobject().get());
assert!(!runtime.is_null());
let context = JS_GetContext(runtime);
assert!(!context.is_null());
context
}
}
pub fn crypto(&self) -> Root<Crypto> {
self.crypto.or_init(|| Crypto::new(self))
}
/// Get next worker id.
pub fn get_next_worker_id(&self) -> WorkerId {
let worker_id = self.next_worker_id.get();
let WorkerId(id_num) = worker_id;
self.next_worker_id.set(WorkerId(id_num + 1));
worker_id
}
pub fn live_devtools_updates(&self) -> bool {
self.devtools_wants_updates.get()
}
pub fn set_devtools_wants_updates(&self, value: bool) {
self.devtools_wants_updates.set(value);
}
pub fn time(&self, label: DOMString) -> Result<(), ()> {
let mut timers = self.console_timers.borrow_mut();
if timers.len() >= 10000 {
return Err(());
}
match timers.entry(label) {
Entry::Vacant(entry) => {
entry.insert(timestamp_in_ms(get_time()));
Ok(())
},
Entry::Occupied(_) => Err(()),
}
}
pub fn time_end(&self, label: &str) -> Result<u64, ()> {
self.console_timers.borrow_mut().remove(label).ok_or(()).map(|start| {
timestamp_in_ms(get_time()) - start
})
}
/// Get an `&IpcSender<ScriptToDevtoolsControlMsg>` to send messages
/// to the devtools thread when available.
pub fn devtools_chan(&self) -> Option<&IpcSender<ScriptToDevtoolsControlMsg>> {
self.devtools_chan.as_ref()
}
/// Get a sender to the memory profiler thread.
pub fn mem_profiler_chan(&self) -> &mem::ProfilerChan {
&self.mem_profiler_chan
}
/// Get a sender to the time profiler thread.
pub fn time_profiler_chan(&self) -> &time::ProfilerChan {
&self.time_profiler_chan
}
/// Get a sender to the constellation thread.
pub fn constellation_chan(&self) -> &IpcSender<ConstellationMsg> {
&self.constellation_chan
}
pub fn scheduler_chan(&self) -> &IpcSender<TimerEventRequest> {
&self.scheduler_chan
}
}
fn timestamp_in_ms(time: Timespec) -> u64 {
(time.sec * 1000 + (time.nsec / 1000000) as i64) as u64
}
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