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Reland "perf(http): optimize ReadableStreams backed by a resource" (#14346)

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Divy Srivastava 2022-04-22 16:19:08 +05:30 • committed by GitHub
parent 2724235ec7
commit 57f7e07c13
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14 changed files with 277 additions and 76 deletions
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30
ext/net/01_net.js
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@ -4,7 +4,7 @@
((window) => {
const core = window.Deno.core;
const { BadResourcePrototype, InterruptedPrototype } = core;
const { ReadableStream, WritableStream } = window.__bootstrap.streams;
const { WritableStream, readableStreamForRid } = window.__bootstrap.streams;
const {
Error,
ObjectPrototypeIsPrototypeOf,
@ -65,8 +65,6 @@
return core.opAsync("op_dns_resolve", { query, recordType, options });
}
const DEFAULT_CHUNK_SIZE = 64 * 1024;
function tryClose(rid) {
try {
core.close(rid);
@ -75,32 +73,6 @@
}
}
function readableStreamForRid(rid) {
return new ReadableStream({
type: "bytes",
async pull(controller) {
const v = controller.byobRequest.view;
try {
const bytesRead = await read(rid, v);
if (bytesRead === null) {
tryClose(rid);
controller.close();
controller.byobRequest.respond(0);
} else {
controller.byobRequest.respond(bytesRead);
}
} catch (e) {
controller.error(e);
tryClose(rid);
}
},
cancel() {
tryClose(rid);
},
autoAllocateChunkSize: DEFAULT_CHUNK_SIZE,
});
}
function writableStreamForRid(rid) {
return new WritableStream({
async write(chunk, controller) {