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e6c349af9f
Note cli/dispatch_minimal.rs ops are not yet included in cli/ops. This is part of work towards #2730
49 lines
1.4 KiB
Rust
49 lines
1.4 KiB
Rust
// Copyright 2018-2019 the Deno authors. All rights reserved. MIT license.
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use crate::msg;
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use crate::ops::ok_buf;
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use crate::ops::serialize_response;
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use crate::ops::CliOpResult;
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use crate::state::ThreadSafeState;
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use deno::*;
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use flatbuffers::FlatBufferBuilder;
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// Returns a milliseconds and nanoseconds subsec
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// since the start time of the deno runtime.
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// If the High precision flag is not set, the
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// nanoseconds are rounded on 2ms.
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pub fn op_now(
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state: &ThreadSafeState,
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base: &msg::Base<'_>,
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data: Option<PinnedBuf>,
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) -> CliOpResult {
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assert!(data.is_none());
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let seconds = state.start_time.elapsed().as_secs();
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let mut subsec_nanos = state.start_time.elapsed().subsec_nanos();
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let reduced_time_precision = 2_000_000; // 2ms in nanoseconds
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// If the permission is not enabled
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// Round the nano result on 2 milliseconds
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// see: https://developer.mozilla.org/en-US/docs/Web/API/DOMHighResTimeStamp#Reduced_time_precision
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if !state.permissions.allows_hrtime() {
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subsec_nanos -= subsec_nanos % reduced_time_precision
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}
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let builder = &mut FlatBufferBuilder::new();
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let inner = msg::NowRes::create(
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builder,
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&msg::NowResArgs {
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seconds,
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subsec_nanos,
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},
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);
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ok_buf(serialize_response(
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base.cmd_id(),
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builder,
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msg::BaseArgs {
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inner: Some(inner.as_union_value()),
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inner_type: msg::Any::NowRes,
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..Default::default()
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},
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))
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}
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