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feat(unstable): Ability to ref/unref "Child" in "Deno.spawnChild()" API (#15151)

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Co-authored-by: Bartek Iwańczuk <biwanczuk@gmail.com>
Co-authored-by: Colin Ihrig <cjihrig@gmail.com>
This commit is contained in:
Leo Kettmeir 2022-07-18 22:24:35 +02:00 • committed by GitHub
parent 9eb70bdb5f
commit 2bebdc9116
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5 changed files with 98 additions and 7 deletions
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34
runtime/js/40_spawn.js
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@ -13,10 +13,13 @@
TypeError,
Uint8Array,
PromiseAll,
SymbolFor,
} = window.__bootstrap.primordials;
const { readableStreamForRid, writableStreamForRid } =
window.__bootstrap.streamUtils;
const promiseIdSymbol = SymbolFor("Deno.core.internalPromiseId");
function spawnChild(command, {
args = [],
cwd = undefined,
@ -71,6 +74,7 @@
class Child {
#rid;
#waitPromiseId;
#pid;
get pid() {
@ -85,6 +89,8 @@
return this.#stdin;
}
#stdoutPromiseId;
#stdoutRid;
#stdout = null;
get stdout() {
if (this.#stdout == null) {
@ -93,6 +99,8 @@
return this.#stdout;
}
#stderrPromiseId;
#stderrRid;
#stderr = null;
get stderr() {
if (this.#stderr == null) {
@ -121,17 +129,25 @@
}
if (stdoutRid !== null) {
this.#stdout = readableStreamForRid(stdoutRid);
this.#stdoutRid = stdoutRid;
this.#stdout = readableStreamForRid(stdoutRid, (promise) => {
this.#stdoutPromiseId = promise[promiseIdSymbol];
});
}
if (stderrRid !== null) {
this.#stderr = readableStreamForRid(stderrRid);
this.#stderrRid = stderrRid;
this.#stderr = readableStreamForRid(stderrRid, (promise) => {
this.#stderrPromiseId = promise[promiseIdSymbol];
});
}
const onAbort = () => this.kill("SIGTERM");
signal?.[add](onAbort);
this.#status = core.opAsync("op_spawn_wait", this.#rid).then((res) => {
const waitPromise = core.opAsync("op_spawn_wait", this.#rid);
this.#waitPromiseId = waitPromise[promiseIdSymbol];
this.#status = waitPromise.then((res) => {
this.#rid = null;
signal?.[remove](onAbort);
return res;
@ -186,6 +202,18 @@
}
core.opSync("op_kill", this.#pid, signo);
}
ref() {
core.refOp(this.#waitPromiseId);
if (this.#stdoutPromiseId) core.refOp(this.#stdoutPromiseId);
if (this.#stderrPromiseId) core.refOp(this.#stderrPromiseId);
}
unref() {
core.unrefOp(this.#waitPromiseId);
if (this.#stdoutPromiseId) core.unrefOp(this.#stdoutPromiseId);
if (this.#stderrPromiseId) core.unrefOp(this.#stderrPromiseId);
}
}
function spawn(command, options) {