mirror of
https://github.com/denoland/deno.git
synced 2024-11-01 09:24:20 -04:00
78 lines
2.2 KiB
Rust
78 lines
2.2 KiB
Rust
// Copyright 2018-2020 the Deno authors. All rights reserved. MIT license.
|
|
use super::dispatch_json::{Deserialize, JsonOp, Value};
|
|
use crate::op_error::OpError;
|
|
use crate::state::State;
|
|
use deno_core::CoreIsolate;
|
|
use deno_core::ZeroCopyBuf;
|
|
use futures::future::FutureExt;
|
|
use std::time::Duration;
|
|
use std::time::Instant;
|
|
|
|
pub fn init(i: &mut CoreIsolate, s: &State) {
|
|
i.register_op(
|
|
"op_global_timer_stop",
|
|
s.stateful_json_op(op_global_timer_stop),
|
|
);
|
|
i.register_op("op_global_timer", s.stateful_json_op(op_global_timer));
|
|
i.register_op("op_now", s.stateful_json_op(op_now));
|
|
}
|
|
|
|
fn op_global_timer_stop(
|
|
state: &State,
|
|
_args: Value,
|
|
_zero_copy: &mut [ZeroCopyBuf],
|
|
) -> Result<JsonOp, OpError> {
|
|
let mut state = state.borrow_mut();
|
|
state.global_timer.cancel();
|
|
Ok(JsonOp::Sync(json!({})))
|
|
}
|
|
|
|
#[derive(Deserialize)]
|
|
struct GlobalTimerArgs {
|
|
timeout: u64,
|
|
}
|
|
|
|
fn op_global_timer(
|
|
state: &State,
|
|
args: Value,
|
|
_zero_copy: &mut [ZeroCopyBuf],
|
|
) -> Result<JsonOp, OpError> {
|
|
let args: GlobalTimerArgs = serde_json::from_value(args)?;
|
|
let val = args.timeout;
|
|
|
|
let mut state = state.borrow_mut();
|
|
let deadline = Instant::now() + Duration::from_millis(val);
|
|
let f = state
|
|
.global_timer
|
|
.new_timeout(deadline)
|
|
.then(move |_| futures::future::ok(json!({})));
|
|
|
|
Ok(JsonOp::Async(f.boxed_local()))
|
|
}
|
|
|
|
// 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: &State,
|
|
_args: Value,
|
|
_zero_copy: &mut [ZeroCopyBuf],
|
|
) -> Result<JsonOp, OpError> {
|
|
let state = state.borrow();
|
|
let seconds = state.start_time.elapsed().as_secs();
|
|
let mut subsec_nanos = 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 !state.permissions.allow_hrtime.is_allow() {
|
|
subsec_nanos -= subsec_nanos % reduced_time_precision
|
|
}
|
|
|
|
Ok(JsonOp::Sync(json!({
|
|
"seconds": seconds,
|
|
"subsecNanos": subsec_nanos,
|
|
})))
|
|
}
|