language-servers/deno
1
0
Fork 0
mirror of https://github.com/denoland/deno.git synced 2025-09-19 08:59:47 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions 3

core: Add test for snapshotting from Rust (#2197)

Browse source
This commit is contained in:
Ryan Dahl 2019-04-24 21:43:06 -04:00 • committed by GitHub
parent f694823507
commit 7fc9d7d62a
No known key found for this signature in database
GPG key ID: 4AEE18F83AFDEB23
5 changed files with 78 additions and 35 deletions
Download patch file Download diff file Expand all files Collapse all files

39
core/shared_queue.js
View file

@ -16,6 +16,8 @@ SharedQueue Binary Layout
+---------------------------------------------------------------+
*/
/* eslint-disable @typescript-eslint/no-use-before-define */
(window => {
const GLOBAL_NAMESPACE = "Deno";
const CORE_NAMESPACE = "core";
@ -32,6 +34,25 @@ SharedQueue Binary Layout
let sharedBytes;
let shared32;
let initialized = false;
function maybeInit() {
if (!initialized) {
init();
initialized = true;
}
}
function init() {
let shared = Deno.core.shared;
assert(shared.byteLength > 0);
assert(sharedBytes == null);
assert(shared32 == null);
sharedBytes = new Uint8Array(shared);
shared32 = new Int32Array(shared);
// Callers should not call Deno.core.recv, use setAsyncHandler.
Deno.core.recv(handleAsyncMsgFromRust);
}
function assert(cond) {
if (!cond) {
@ -40,12 +61,14 @@ SharedQueue Binary Layout
}
function reset() {
maybeInit();
shared32[INDEX_NUM_RECORDS] = 0;
shared32[INDEX_NUM_SHIFTED_OFF] = 0;
shared32[INDEX_HEAD] = HEAD_INIT;
}
function head() {
maybeInit();
return shared32[INDEX_HEAD];
}
@ -121,6 +144,7 @@ SharedQueue Binary Layout
let asyncHandler;
function setAsyncHandler(cb) {
maybeInit();
assert(asyncHandler == null);
asyncHandler = cb;
}
@ -135,17 +159,8 @@ SharedQueue Binary Layout
}
}
function init(shared) {
assert(shared.byteLength > 0);
assert(sharedBytes == null);
assert(shared32 == null);
sharedBytes = new Uint8Array(shared);
shared32 = new Int32Array(shared);
// Callers should not call Deno.core.recv, use setAsyncHandler.
window.Deno.core.recv(handleAsyncMsgFromRust);
}
function dispatch(control, zeroCopy = null) {
maybeInit();
// First try to push control to shared.
const success = push(control);
// If successful, don't use first argument of core.send.
@ -170,6 +185,4 @@ SharedQueue Binary Layout
assert(window[GLOBAL_NAMESPACE] != null);
assert(window[GLOBAL_NAMESPACE][CORE_NAMESPACE] != null);
Object.assign(core, denoCore);
init(Deno.core.shared);
})(globalThis);
})(this);