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author | Bartek IwaĆczuk <biwanczuk@gmail.com> | 2020-12-13 19:45:53 +0100 |
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committer | GitHub <noreply@github.com> | 2020-12-13 19:45:53 +0100 |
commit | 2e74f164b6dcf0ecbf8dd38fba9fae550d784bd0 (patch) | |
tree | 61abe8e09d5331ace5d9de529f0e2737a8e05dbb /cli/rt/10_dispatch_minimal.js | |
parent | 84ef9bd21fb48fb6b5fbc8dafc3de9f361bade3b (diff) |
refactor: deno_runtime crate (#8640)
This commit moves Deno JS runtime, ops, permissions and
inspector implementation to new "deno_runtime" crate located
in "runtime/" directory.
Details in "runtime/README.md".
Co-authored-by: Ryan Dahl <ry@tinyclouds.org>
Diffstat (limited to 'cli/rt/10_dispatch_minimal.js')
-rw-r--r-- | cli/rt/10_dispatch_minimal.js | 114 |
1 files changed, 0 insertions, 114 deletions
diff --git a/cli/rt/10_dispatch_minimal.js b/cli/rt/10_dispatch_minimal.js deleted file mode 100644 index dceb23e5f..000000000 --- a/cli/rt/10_dispatch_minimal.js +++ /dev/null @@ -1,114 +0,0 @@ -// Copyright 2018-2020 the Deno authors. All rights reserved. MIT license. - -((window) => { - const core = window.Deno.core; - const util = window.__bootstrap.util; - - // Using an object without a prototype because `Map` was causing GC problems. - const promiseTableMin = Object.create(null); - - const decoder = new TextDecoder(); - - // Note it's important that promiseId starts at 1 instead of 0, because sync - // messages are indicated with promiseId 0. If we ever add wrap around logic for - // overflows, this should be taken into account. - let _nextPromiseId = 1; - - function nextPromiseId() { - return _nextPromiseId++; - } - - function recordFromBufMinimal(ui8) { - const headerLen = 12; - const header = ui8.subarray(0, headerLen); - const buf32 = new Int32Array( - header.buffer, - header.byteOffset, - header.byteLength / 4, - ); - const promiseId = buf32[0]; - const arg = buf32[1]; - const result = buf32[2]; - let err; - - if (arg < 0) { - err = { - className: decoder.decode(ui8.subarray(headerLen, headerLen + result)), - message: decoder.decode(ui8.subarray(headerLen + result)), - }; - } else if (ui8.length != 12) { - throw new TypeError("Malformed response message"); - } - - return { - promiseId, - arg, - result, - err, - }; - } - - function unwrapResponse(res) { - if (res.err != null) { - const ErrorClass = core.getErrorClass(res.err.className); - if (!ErrorClass) { - throw new Error( - `Unregistered error class: "${res.err.className}"\n ${res.err.message}\n Classes of errors returned from ops should be registered via Deno.core.registerErrorClass().`, - ); - } - throw new ErrorClass(res.err.message); - } - return res.result; - } - - const scratch32 = new Int32Array(3); - const scratchBytes = new Uint8Array( - scratch32.buffer, - scratch32.byteOffset, - scratch32.byteLength, - ); - util.assert(scratchBytes.byteLength === scratch32.length * 4); - - function asyncMsgFromRust(ui8) { - const record = recordFromBufMinimal(ui8); - const { promiseId } = record; - const promise = promiseTableMin[promiseId]; - delete promiseTableMin[promiseId]; - util.assert(promise); - promise.resolve(record); - } - - async function sendAsync(opName, arg, zeroCopy) { - const promiseId = nextPromiseId(); // AKA cmdId - scratch32[0] = promiseId; - scratch32[1] = arg; - scratch32[2] = 0; // result - const promise = util.createResolvable(); - const buf = core.dispatchByName(opName, scratchBytes, zeroCopy); - if (buf != null) { - const record = recordFromBufMinimal(buf); - // Sync result. - promise.resolve(record); - } else { - // Async result. - promiseTableMin[promiseId] = promise; - } - - const res = await promise; - return unwrapResponse(res); - } - - function sendSync(opName, arg, zeroCopy) { - scratch32[0] = 0; // promiseId 0 indicates sync - scratch32[1] = arg; - const res = core.dispatchByName(opName, scratchBytes, zeroCopy); - const resRecord = recordFromBufMinimal(res); - return unwrapResponse(resRecord); - } - - window.__bootstrap.dispatchMinimal = { - asyncMsgFromRust, - sendSync, - sendAsync, - }; -})(this); |