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| author | snek <snek@deno.com> | 2024-11-08 23:20:24 +0100 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2024-11-08 23:20:24 +0100 |
| commit | 73fbd61bd016eebbf2776dc94c15a26bf39668d6 (patch) | |
| tree | c7e5f4ee47f94f2279e745b1825959f82a66a22d /ext/web/02_timers.js | |
| parent | d4f1bd3dacf54c4625eef7828341b39286ead8cb (diff) | |
fix: performance.timeOrigin (#26787)
`performance.timeOrigin` was being set from when JS started executing,
but `op_now` measures from an `std::time::Instant` stored in `OpState`,
which is created at a completely different time. This caused
`performance.timeOrigin` to be very incorrect. This PR corrects the
origin and also cleans up some of the timer code.
Compared to `Date.now()`, `performance`'s time origin is now
consistently within 5us (0.005ms) of system time.
Diffstat (limited to 'ext/web/02_timers.js')
| -rw-r--r-- | ext/web/02_timers.js | 13 |
1 files changed, 1 insertions, 12 deletions
diff --git a/ext/web/02_timers.js b/ext/web/02_timers.js index 89acaca42..6058febd5 100644 --- a/ext/web/02_timers.js +++ b/ext/web/02_timers.js @@ -1,12 +1,9 @@ // Copyright 2018-2024 the Deno authors. All rights reserved. MIT license. import { core, primordials } from "ext:core/mod.js"; -import { op_defer, op_now } from "ext:core/ops"; +import { op_defer } from "ext:core/ops"; const { - Uint8Array, - Uint32Array, PromisePrototypeThen, - TypedArrayPrototypeGetBuffer, TypeError, indirectEval, ReflectApply, @@ -18,13 +15,6 @@ const { import * as webidl from "ext:deno_webidl/00_webidl.js"; -const hrU8 = new Uint8Array(8); -const hr = new Uint32Array(TypedArrayPrototypeGetBuffer(hrU8)); -function opNow() { - op_now(hrU8); - return (hr[0] * 1000 + hr[1] / 1e6); -} - // --------------------------------------------------------------------------- function checkThis(thisArg) { @@ -151,7 +141,6 @@ export { clearInterval, clearTimeout, defer, - opNow, refTimer, setImmediate, setInterval, |