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// Copyright 2018-2020 the Deno authors. All rights reserved. MIT license.
use deno_core::BufVec;
use deno_core::ErrBox;
use deno_core::OpState;
use deno_core::ZeroCopyBuf;
use futures::future::FutureExt;
use serde_derive::Deserialize;
use serde_json::Value;
use std::cell::RefCell;
use std::rc::Rc;
use std::time::Duration;
use std::time::Instant;
pub fn init(rt: &mut deno_core::JsRuntime) {
super::reg_json_sync(rt, "op_global_timer_stop", op_global_timer_stop);
super::reg_json_async(rt, "op_global_timer", op_global_timer);
super::reg_json_sync(rt, "op_now", op_now);
}
fn op_global_timer_stop(
state: &mut OpState,
_args: Value,
_zero_copy: &mut [ZeroCopyBuf],
) -> Result<Value, ErrBox> {
let cli_state = super::cli_state(state);
cli_state.global_timer.borrow_mut().cancel();
Ok(json!({}))
}
#[derive(Deserialize)]
struct GlobalTimerArgs {
timeout: u64,
}
async fn op_global_timer(
state: Rc<RefCell<OpState>>,
args: Value,
_zero_copy: BufVec,
) -> Result<Value, ErrBox> {
let args: GlobalTimerArgs = serde_json::from_value(args)?;
let val = args.timeout;
let deadline = Instant::now() + Duration::from_millis(val);
let timer_fut = {
super::cli_state2(&state)
.global_timer
.borrow_mut()
.new_timeout(deadline)
.boxed_local()
};
let _ = timer_fut.await;
Ok(json!({}))
}
// Returns a milliseconds and nanoseconds subsec
// since the start time of the deno runtime.
// If the High precision flag is not set, the
// nanoseconds are rounded on 2ms.
fn op_now(
state: &mut OpState,
_args: Value,
_zero_copy: &mut [ZeroCopyBuf],
) -> Result<Value, ErrBox> {
let cli_state = super::cli_state(state);
let seconds = cli_state.start_time.elapsed().as_secs();
let mut subsec_nanos = cli_state.start_time.elapsed().subsec_nanos();
let reduced_time_precision = 2_000_000; // 2ms in nanoseconds
// If the permission is not enabled
// Round the nano result on 2 milliseconds
// see: https://developer.mozilla.org/en-US/docs/Web/API/DOMHighResTimeStamp#Reduced_time_precision
if cli_state.check_hrtime().is_err() {
subsec_nanos -= subsec_nanos % reduced_time_precision;
}
Ok(json!({
"seconds": seconds,
"subsecNanos": subsec_nanos,
}))
}
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