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https://github.com/denoland/deno.git
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perf(runtime): read entire files in single ops (#14261)
Co-authored-by: Divy Srivastava <dj.srivastava23@gmail.com>
This commit is contained in:
parent
9853c96cc4
commit
8b8b21b553
3 changed files with 129 additions and 64 deletions
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@ -1,5 +1,4 @@
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// Copyright 2018-2022 the Deno authors. All rights reserved. MIT license.
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import { writeAllSync } from "../../../test_util/std/io/util.ts";
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import {
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assert,
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assertEquals,
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@ -152,42 +151,3 @@ Deno.test(
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assert(data.byteLength > 0);
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},
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);
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Deno.test(
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{ permissions: { read: true, write: true } },
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async function readFileExtendedDuringRead() {
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// Write 128MB file
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const filename = Deno.makeTempDirSync() + "/test.txt";
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const data = new Uint8Array(1024 * 1024 * 128);
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Deno.writeFileSync(filename, data);
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const promise = Deno.readFile(filename);
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queueMicrotask(() => {
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// Append 128MB to file
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const f = Deno.openSync(filename, { append: true });
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writeAllSync(f, data);
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f.close();
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});
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const read = await promise;
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assertEquals(read.byteLength, data.byteLength * 2);
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},
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);
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Deno.test(
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{ permissions: { read: true, write: true } },
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async function readFile0LengthExtendedDuringRead() {
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// Write 0 byte file
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const filename = Deno.makeTempDirSync() + "/test.txt";
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const first = new Uint8Array(0);
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const second = new Uint8Array(1024 * 1024 * 128);
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Deno.writeFileSync(filename, first);
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const promise = Deno.readFile(filename);
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queueMicrotask(() => {
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// Append 128MB to file
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const f = Deno.openSync(filename, { append: true });
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writeAllSync(f, second);
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f.close();
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});
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const read = await promise;
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assertEquals(read.byteLength, second.byteLength);
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},
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);
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@ -3,44 +3,69 @@
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((window) => {
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const core = window.Deno.core;
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const { open, openSync } = window.__bootstrap.files;
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const { readAllSync, readAll, readAllSyncSized, readAllInnerSized } =
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window.__bootstrap.io;
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const { pathFromURL } = window.__bootstrap.util;
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const { abortSignal } = window.__bootstrap;
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function readFileSync(path) {
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const file = openSync(path);
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try {
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const { size } = file.statSync();
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if (size === 0) {
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return readAllSync(file);
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} else {
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return readAllSyncSized(file, size);
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}
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} finally {
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file.close();
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}
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return core.opSync("op_readfile_sync", pathFromURL(path));
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}
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async function readFile(path, options) {
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const file = await open(path);
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let cancelRid;
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let abortHandler;
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if (options?.signal) {
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options.signal.throwIfAborted();
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cancelRid = core.opSync("op_cancel_handle");
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abortHandler = () => core.tryClose(cancelRid);
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options.signal[abortSignal.add](abortHandler);
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}
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try {
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const { size } = await file.stat();
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if (size === 0) {
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return await readAll(file);
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} else {
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return await readAllInnerSized(file, size, options);
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}
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const read = await core.opAsync(
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"op_readfile_async",
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pathFromURL(path),
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cancelRid,
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);
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return read;
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} finally {
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file.close();
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if (options?.signal) {
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options.signal[abortSignal.remove](abortHandler);
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// always throw the abort error when aborted
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options.signal.throwIfAborted();
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}
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}
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}
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function readTextFileSync(path) {
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return core.decode(readFileSync(path));
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return core.opSync("op_readfile_text_sync", pathFromURL(path));
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}
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async function readTextFile(path, options) {
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return core.decode(await readFile(path, options));
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let cancelRid;
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let abortHandler;
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if (options?.signal) {
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options.signal.throwIfAborted();
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cancelRid = core.opSync("op_cancel_handle");
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abortHandler = () => core.tryClose(cancelRid);
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options.signal[abortSignal.add](abortHandler);
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}
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try {
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const read = await core.opAsync(
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"op_readfile_text_async",
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pathFromURL(path),
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cancelRid,
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);
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return read;
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} finally {
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if (options?.signal) {
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options.signal[abortSignal.remove](abortHandler);
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// always throw the abort error when aborted
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options.signal.throwIfAborted();
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}
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}
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}
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window.__bootstrap.readFile = {
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@ -95,6 +95,10 @@ pub fn init() -> Extension {
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op_futime_async::decl(),
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op_utime_sync::decl(),
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op_utime_async::decl(),
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op_readfile_sync::decl(),
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op_readfile_text_sync::decl(),
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op_readfile_async::decl(),
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op_readfile_text_async::decl(),
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])
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.build()
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}
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@ -2008,3 +2012,79 @@ fn op_cwd(state: &mut OpState) -> Result<String, AnyError> {
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let path_str = into_string(path.into_os_string())?;
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Ok(path_str)
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}
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#[op]
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fn op_readfile_sync(
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state: &mut OpState,
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path: String,
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) -> Result<ZeroCopyBuf, AnyError> {
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let permissions = state.borrow_mut::<Permissions>();
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let path = Path::new(&path);
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permissions.read.check(path)?;
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Ok(std::fs::read(path)?.into())
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}
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#[op]
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fn op_readfile_text_sync(
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state: &mut OpState,
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path: String,
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) -> Result<String, AnyError> {
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let permissions = state.borrow_mut::<Permissions>();
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let path = Path::new(&path);
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permissions.read.check(path)?;
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Ok(std::fs::read_to_string(path)?)
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}
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#[op]
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async fn op_readfile_async(
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state: Rc<RefCell<OpState>>,
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path: String,
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cancel_rid: Option<ResourceId>,
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) -> Result<ZeroCopyBuf, AnyError> {
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{
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let path = Path::new(&path);
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let mut state = state.borrow_mut();
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state.borrow_mut::<Permissions>().read.check(path)?;
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}
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let fut = tokio::task::spawn_blocking(move || {
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let path = Path::new(&path);
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Ok(std::fs::read(path).map(ZeroCopyBuf::from)?)
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});
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if let Some(cancel_rid) = cancel_rid {
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let cancel_handle = state
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.borrow_mut()
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.resource_table
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.get::<CancelHandle>(cancel_rid);
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if let Ok(cancel_handle) = cancel_handle {
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return fut.or_cancel(cancel_handle).await??;
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}
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}
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fut.await?
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}
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#[op]
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async fn op_readfile_text_async(
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state: Rc<RefCell<OpState>>,
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path: String,
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cancel_rid: Option<ResourceId>,
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) -> Result<String, AnyError> {
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{
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let path = Path::new(&path);
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let mut state = state.borrow_mut();
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state.borrow_mut::<Permissions>().read.check(path)?;
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}
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let fut = tokio::task::spawn_blocking(move || {
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let path = Path::new(&path);
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Ok(String::from_utf8(std::fs::read(path)?)?)
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});
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if let Some(cancel_rid) = cancel_rid {
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let cancel_handle = state
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.borrow_mut()
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.resource_table
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.get::<CancelHandle>(cancel_rid);
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if let Ok(cancel_handle) = cancel_handle {
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return fut.or_cancel(cancel_handle).await??;
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}
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}
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fut.await?
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}
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