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Split out compiler snapshot (#1566)

Speeds up startup time, reduces runtime heap size.
This commit is contained in:
Kitson Kelly 2019-01-29 11:41:28 +10:00 committed by Ryan Dahl
parent f7c0f49443
commit ee9c627cc5
14 changed files with 198 additions and 254 deletions

View file

@ -117,6 +117,7 @@ ts_sources = [
group("deno_deps") {
deps = [
":msg_rs",
":snapshot_compiler",
":snapshot_deno",
"libdeno:libdeno_static_lib",
]
@ -195,28 +196,21 @@ run_node("deno_runtime_declaration") {
}
}
run_node("bundle") {
bundle("main_bundle") {
out_dir = "$target_gen_dir/bundle/"
outputs = [
out_dir + "main.js",
out_dir + "main.js.map",
]
depfile = out_dir + "main.d"
out_name = "main"
deps = [
":deno_runtime_declaration",
":msg_ts",
]
args = [
rebase_path("third_party/node_modules/rollup/bin/rollup", root_build_dir),
"-c",
rebase_path("rollup.config.js", root_build_dir),
"-i",
rebase_path("js/main.ts", root_build_dir),
"-o",
rebase_path(out_dir + "main.js", root_build_dir),
"--sourcemapFile",
rebase_path("."),
"--silent",
}
bundle("compiler_bundle") {
out_dir = "$target_gen_dir/bundle/"
out_name = "compiler"
deps = [
":deno_runtime_declaration",
":msg_ts",
]
}
@ -236,6 +230,14 @@ rust_flatbuffer("msg_rs") {
snapshot("snapshot_deno") {
source_root = "$target_gen_dir/bundle/main.js"
deps = [
":bundle",
":main_bundle",
]
}
# Generates $target_gen_dir/snapshot_compiler.bin
snapshot("snapshot_compiler") {
source_root = "$target_gen_dir/bundle/compiler.js"
deps = [
":compiler_bundle",
]
}

View file

@ -1,19 +1,28 @@
// Copyright 2018-2019 the Deno authors. All rights reserved. MIT license.
import * as ts from "typescript";
import { MediaType } from "gen/msg_generated";
import * as msg from "gen/msg_generated";
import { assetSourceCode } from "./assets";
import { Console } from "./console";
import { globalEval } from "./global_eval";
import { libdeno } from "./libdeno";
import * as os from "./os";
import { clearTimer, setTimeout } from "./timers";
import { TextDecoder, TextEncoder } from "./text_encoding";
import { postMessage, workerClose, workerMain } from "./workers";
import { assert, log, notImplemented } from "./util";
const EOL = "\n";
const ASSETS = "$asset$";
const LIB_RUNTIME = "lib.deno_runtime.d.ts";
const window = globalEval("this");
const console = new Console(libdeno.print);
/** The location that a module is being loaded from. This could be a directory,
* like `.`, or it could be a module specifier like
* `http://gist.github.com/somefile.ts`
*/
export type ContainingFile = string;
type ContainingFile = string;
/** The internal local filename of a compiled module. It will often be something
* like `/home/ry/.deno/gen/f7b4605dfbc4d3bb356e98fda6ceb1481e4a8df5.js`
*/
@ -25,7 +34,7 @@ type ModuleId = string;
/** The external name of a module - could be a URL or could be a relative path.
* Examples `http://gist.github.com/somefile.ts` or `./somefile.ts`
*/
export type ModuleSpecifier = string;
type ModuleSpecifier = string;
/** The compiled source code which is cached in `.deno/gen/` */
type OutputCode = string;
/** The original source code */
@ -33,10 +42,16 @@ type SourceCode = string;
/** The output source map */
type SourceMap = string;
/** The format of the work message payload coming from the privilaged side */
interface CompilerLookup {
specifier: ModuleSpecifier;
referrer: ContainingFile;
}
/** Abstraction of the APIs required from the `os` module so they can be
* easily mocked.
*/
export interface Os {
interface Os {
codeCache: typeof os.codeCache;
codeFetch: typeof os.codeFetch;
exit: typeof os.exit;
@ -45,7 +60,7 @@ export interface Os {
/** Abstraction of the APIs required from the `typescript` module so they can
* be easily mocked.
*/
export interface Ts {
interface Ts {
createLanguageService: typeof ts.createLanguageService;
/* tslint:disable-next-line:max-line-length */
formatDiagnosticsWithColorAndContext: typeof ts.formatDiagnosticsWithColorAndContext;
@ -56,13 +71,13 @@ export interface Ts {
* Named `ModuleMetaData` to clarify it is just a representation of meta data of
* the module, not the actual module instance.
*/
export class ModuleMetaData implements ts.IScriptSnapshot {
class ModuleMetaData implements ts.IScriptSnapshot {
public scriptVersion = "";
constructor(
public readonly moduleId: ModuleId,
public readonly fileName: ModuleFileName,
public readonly mediaType: MediaType,
public readonly mediaType: msg.MediaType,
public readonly sourceCode: SourceCode = "",
public outputCode: OutputCode = "",
public sourceMap: SourceMap = ""
@ -88,23 +103,23 @@ export class ModuleMetaData implements ts.IScriptSnapshot {
function getExtension(
fileName: ModuleFileName,
mediaType: MediaType
mediaType: msg.MediaType
): ts.Extension | undefined {
switch (mediaType) {
case MediaType.JavaScript:
case msg.MediaType.JavaScript:
return ts.Extension.Js;
case MediaType.TypeScript:
case msg.MediaType.TypeScript:
return fileName.endsWith(".d.ts") ? ts.Extension.Dts : ts.Extension.Ts;
case MediaType.Json:
case msg.MediaType.Json:
return ts.Extension.Json;
case MediaType.Unknown:
case msg.MediaType.Unknown:
default:
return undefined;
}
}
/** Generate output code for a provided JSON string along with its source. */
export function jsonEsmTemplate(
function jsonEsmTemplate(
jsonString: string,
sourceFileName: string
): OutputCode {
@ -116,8 +131,7 @@ export function jsonEsmTemplate(
* with Deno specific APIs to provide an interface for compiling and running
* TypeScript and JavaScript modules.
*/
export class Compiler
implements ts.LanguageServiceHost, ts.FormatDiagnosticsHost {
class Compiler implements ts.LanguageServiceHost, ts.FormatDiagnosticsHost {
// Modules are usually referenced by their ModuleSpecifier and ContainingFile,
// and keeping a map of the resolved module file name allows more efficient
// future resolution
@ -212,10 +226,7 @@ export class Compiler
innerMap.set(moduleSpecifier, fileName);
}
private constructor() {
if (Compiler._instance) {
throw new TypeError("Attempt to create an additional compiler.");
}
constructor() {
this._service = this._ts.createLanguageService(this);
}
@ -238,12 +249,13 @@ export class Compiler
console.warn("Compiling", moduleId);
// Instead of using TypeScript to transpile JSON modules, we will just do
// it directly.
if (mediaType === MediaType.Json) {
if (mediaType === msg.MediaType.Json) {
moduleMetaData.outputCode = jsonEsmTemplate(sourceCode, fileName);
} else {
const service = this._service;
assert(
mediaType === MediaType.TypeScript || mediaType === MediaType.JavaScript
mediaType === msg.MediaType.TypeScript ||
mediaType === msg.MediaType.JavaScript
);
const output = service.getEmitOutput(fileName);
@ -319,7 +331,7 @@ export class Compiler
return this._moduleMetaDataMap.get(fileName)!;
}
let moduleId: ModuleId | undefined;
let mediaType = MediaType.Unknown;
let mediaType = msg.MediaType.Unknown;
let sourceCode: SourceCode | undefined;
let outputCode: OutputCode | undefined;
let sourceMap: SourceMap | undefined;
@ -333,7 +345,7 @@ export class Compiler
moduleId = moduleSpecifier.split("/").pop()!;
const assetName = moduleId.includes(".") ? moduleId : `${moduleId}.d.ts`;
assert(assetName in assetSourceCode, `No such asset "${assetName}"`);
mediaType = MediaType.TypeScript;
mediaType = msg.MediaType.TypeScript;
sourceCode = assetSourceCode[assetName];
fileName = `${ASSETS}/${assetName}`;
outputCode = "";
@ -353,7 +365,7 @@ export class Compiler
assert(moduleId != null, "No module ID.");
assert(fileName != null, "No file name.");
assert(
mediaType !== MediaType.Unknown,
mediaType !== msg.MediaType.Unknown,
`Unknown media type for: "${moduleSpecifier}" from "${containingFile}".`
);
this._log(
@ -362,7 +374,7 @@ export class Compiler
);
this._log("resolveModule has outputCode:", outputCode != null);
this._log("resolveModule has source map:", sourceMap != null);
this._log("resolveModule has media type:", MediaType[mediaType]);
this._log("resolveModule has media type:", msg.MediaType[mediaType]);
// fileName is asserted above, but TypeScript does not track so not null
this._setFileName(moduleSpecifier, containingFile, fileName!);
if (fileName && this._moduleMetaDataMap.has(fileName)) {
@ -408,11 +420,11 @@ export class Compiler
const moduleMetaData = this._getModuleMetaData(fileName);
if (moduleMetaData) {
switch (moduleMetaData.mediaType) {
case MediaType.TypeScript:
case msg.MediaType.TypeScript:
return ts.ScriptKind.TS;
case MediaType.JavaScript:
case msg.MediaType.JavaScript:
return ts.ScriptKind.JS;
case MediaType.Json:
case msg.MediaType.Json:
return ts.ScriptKind.JSON;
default:
return this._options.allowJs ? ts.ScriptKind.JS : ts.ScriptKind.TS;
@ -495,11 +507,43 @@ export class Compiler
};
});
}
private static _instance: Compiler | undefined;
/** Returns the instance of `Compiler` or creates a new instance. */
static instance(): Compiler {
return Compiler._instance || (Compiler._instance = new Compiler());
}
const compiler = new Compiler();
let startResMsg: msg.StartRes;
// set global objects for compiler web worker
window.clearTimeout = clearTimer;
window.console = console;
window.postMessage = postMessage;
window.setTimeout = setTimeout;
window.workerMain = workerMain;
window.close = workerClose;
window.TextDecoder = TextDecoder;
window.TextEncoder = TextEncoder;
// provide the "main" function that will be called by the privilaged side when
// lazy instantiating the compiler web worker
window.compilerMain = function compilerMain() {
// workerMain should have already been called since a compiler is a worker.
const encoder = new TextEncoder();
const decoder = new TextDecoder();
compiler.recompile = startResMsg.recompileFlag();
log(`recompile ${compiler.recompile}`);
window.onmessage = ({ data }: { data: Uint8Array }) => {
const json = decoder.decode(data);
const lookup = JSON.parse(json) as CompilerLookup;
const moduleMetaData = compiler.compile(lookup.specifier, lookup.referrer);
const responseJson = JSON.stringify(moduleMetaData);
const response = encoder.encode(responseJson);
postMessage(response);
};
};
/* tslint:disable-next-line:no-default-export */
export default function denoMain() {
startResMsg = os.start();
}

View file

@ -1,7 +1,6 @@
// Copyright 2018-2019 the Deno authors. All rights reserved. MIT license.
// Public deno module.
/// <amd-module name="deno"/>
export { pid, env, exit } from "./os";
export { chdir, cwd } from "./dir";
export {
@ -61,8 +60,3 @@ export { Console, stringifyArgs } from "./console";
export { DomIterableMixin } from "./mixins/dom_iterable";
// TODO Don't expose deferred.
export { deferred } from "./util";
// Provide the compiler API in an obfuscated way
import * as compiler from "./compiler";
// @internal
export const _compiler = compiler;

View file

@ -94,6 +94,3 @@ window.TextDecoder = textEncoding.TextDecoder;
export type TextDecoder = textEncoding.TextDecoder;
window.workerMain = workers.workerMain;
// TODO These shouldn't be available in main isolate.
window.postMessage = workers.postMessage;
window.close = workers.workerClose;

View file

@ -1,90 +1,41 @@
// Copyright 2018-2019 the Deno authors. All rights reserved. MIT license.
import { window } from "./globals";
// tslint:disable-next-line:no-reference
/// <reference path="./plugins.d.ts" />
import * as flatbuffers from "./flatbuffers";
import * as msg from "gen/msg_generated";
import { assert, log, setLogDebug } from "./util";
import "./globals";
import { log } from "./util";
import * as os from "./os";
import { Compiler } from "./compiler";
import { libdeno } from "./libdeno";
import { args } from "./deno";
import { sendSync, handleAsyncMsgFromRust } from "./dispatch";
import { replLoop } from "./repl";
import { version } from "typescript";
import { postMessage } from "./workers";
import { TextDecoder, TextEncoder } from "./text_encoding";
import { ModuleSpecifier, ContainingFile } from "./compiler";
// builtin modules
import * as deno from "./deno";
type CompilerLookup = { specifier: ModuleSpecifier; referrer: ContainingFile };
// Global reference to StartRes so it can be shared between compilerMain and
// denoMain.
let startResMsg: msg.StartRes;
function sendStart(): void {
const builder = flatbuffers.createBuilder();
msg.Start.startStart(builder);
const startOffset = msg.Start.endStart(builder);
const baseRes = sendSync(builder, msg.Any.Start, startOffset);
assert(baseRes != null);
assert(msg.Any.StartRes === baseRes!.innerType());
startResMsg = new msg.StartRes();
assert(baseRes!.inner(startResMsg) != null);
}
function compilerMain() {
// workerMain should have already been called since a compiler is a worker.
const compiler = Compiler.instance();
const encoder = new TextEncoder();
const decoder = new TextDecoder();
compiler.recompile = startResMsg.recompileFlag();
log(`recompile ${compiler.recompile}`);
window.onmessage = ({ data }: { data: Uint8Array }) => {
const json = decoder.decode(data);
const lookup = JSON.parse(json) as CompilerLookup;
const moduleMetaData = compiler.compile(lookup.specifier, lookup.referrer);
const responseJson = JSON.stringify(moduleMetaData);
const response = encoder.encode(responseJson);
postMessage(response);
};
}
window["compilerMain"] = compilerMain;
// TODO(kitsonk) remove with `--types` below
import libDts from "gen/lib/lib.deno_runtime.d.ts!string";
/* tslint:disable-next-line:no-default-export */
export default function denoMain() {
libdeno.recv(handleAsyncMsgFromRust);
const startResMsg = os.start();
libdeno.builtinModules["deno"] = deno;
// libdeno.builtinModules["typescript"] = typescript;
Object.freeze(libdeno.builtinModules);
// First we send an empty "Start" message to let the privileged side know we
// are ready. The response should be a "StartRes" message containing the CLI
// args and other info.
sendStart();
setLogDebug(startResMsg.debugFlag());
// handle `--types`
// TODO(kitsonk) move to Rust fetching from compiler
if (startResMsg.typesFlag()) {
const compiler = Compiler.instance();
const defaultLibFileName = compiler.getDefaultLibFileName();
const defaultLibModule = compiler.resolveModule(defaultLibFileName, "");
console.log(defaultLibModule.sourceCode);
os.exit(0);
}
// handle `--version`
if (startResMsg.versionFlag()) {
console.log("deno:", startResMsg.denoVersion());
console.log("v8:", startResMsg.v8Version());
console.log("typescript:", version);
// TODO figure out a way to restore functionality
// console.log("typescript:", version);
os.exit(0);
}
// handle `--types`
// TODO(kitsonk) move to Rust fetching from compiler
if (startResMsg.typesFlag()) {
console.log(libDts);
os.exit(0);
}

View file

@ -1,9 +1,10 @@
// Copyright 2018-2019 the Deno authors. All rights reserved. MIT license.
import * as msg from "gen/msg_generated";
import { handleAsyncMsgFromRust, sendSync } from "./dispatch";
import * as flatbuffers from "./flatbuffers";
import { libdeno } from "./libdeno";
import { assert } from "./util";
import * as util from "./util";
import * as flatbuffers from "./flatbuffers";
import { sendSync } from "./dispatch";
/** process id */
export let pid: number;
@ -142,3 +143,32 @@ export function env(): { [index: string]: string } {
// TypeScript cannot track assertion above, therefore not null assertion
return createEnv(res);
}
/** Send to the privileged side that we have setup and are ready. */
function sendStart(): msg.StartRes {
const builder = flatbuffers.createBuilder();
msg.Start.startStart(builder);
const startOffset = msg.Start.endStart(builder);
const baseRes = sendSync(builder, msg.Any.Start, startOffset);
assert(baseRes != null);
assert(msg.Any.StartRes === baseRes!.innerType());
const startResMsg = new msg.StartRes();
assert(baseRes!.inner(startResMsg) != null);
return startResMsg;
}
// This function bootstraps an environment within Deno, it is shared both by
// the runtime and the compiler environments.
// @internal
export function start(): msg.StartRes {
libdeno.recv(handleAsyncMsgFromRust);
// First we send an empty `Start` message to let the privileged side know we
// are ready. The response should be a `StartRes` message containing the CLI
// args and other info.
const startResMsg = sendStart();
util.setLogDebug(startResMsg.debugFlag());
return startResMsg;
}

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@ -1,124 +1,2 @@
// Copyright 2018-2019 the Deno authors. All rights reserved. MIT license.
export type TypedArray = Uint8Array | Float32Array | Int32Array;
// tslint:disable:max-line-length
// Following definitions adapted from:
// https://github.com/DefinitelyTyped/DefinitelyTyped/blob/master/types/node/index.d.ts
// Type definitions for Node.js 10.3.x
// Definitions by: Microsoft TypeScript <http://typescriptlang.org>
// DefinitelyTyped <https://github.com/DefinitelyTyped/DefinitelyTyped>
// Parambir Singh <https://github.com/parambirs>
// Christian Vaagland Tellnes <https://github.com/tellnes>
// Wilco Bakker <https://github.com/WilcoBakker>
// Nicolas Voigt <https://github.com/octo-sniffle>
// Chigozirim C. <https://github.com/smac89>
// Flarna <https://github.com/Flarna>
// Mariusz Wiktorczyk <https://github.com/mwiktorczyk>
// wwwy3y3 <https://github.com/wwwy3y3>
// Deividas Bakanas <https://github.com/DeividasBakanas>
// Kelvin Jin <https://github.com/kjin>
// Alvis HT Tang <https://github.com/alvis>
// Sebastian Silbermann <https://github.com/eps1lon>
// Hannes Magnusson <https://github.com/Hannes-Magnusson-CK>
// Alberto Schiabel <https://github.com/jkomyno>
// Klaus Meinhardt <https://github.com/ajafff>
// Huw <https://github.com/hoo29>
// Nicolas Even <https://github.com/n-e>
// Bruno Scheufler <https://github.com/brunoscheufler>
// Mohsen Azimi <https://github.com/mohsen1>
// Hoàng Văn Khải <https://github.com/KSXGitHub>
// Alexander T. <https://github.com/a-tarasyuk>
// Lishude <https://github.com/islishude>
// Andrew Makarov <https://github.com/r3nya>
// tslint:enable:max-line-length
export interface CallSite {
/** Value of `this` */
// tslint:disable-next-line:no-any
getThis(): any;
/** Type of `this` as a string.
*
* This is the name of the function stored in the constructor field of
* `this`, if available. Otherwise the object's `[[Class]]` internal
* property.
*/
getTypeName(): string | null;
/** Current function. */
getFunction(): Function | undefined;
/** Name of the current function, typically its name property.
*
* If a name property is not available an attempt will be made to try
* to infer a name from the function's context.
*/
getFunctionName(): string | null;
/** Name of the property (of `this` or one of its prototypes) that holds
* the current function.
*/
getMethodName(): string | null;
/** Name of the script (if this function was defined in a script). */
getFileName(): string | null;
/** Get the script name or source URL for the source map. */
getScriptNameOrSourceURL(): string;
/** Current line number (if this function was defined in a script). */
getLineNumber(): number | null;
/** Current column number (if this function was defined in a script). */
getColumnNumber(): number | null;
/** A call site object representing the location where eval was called (if
* this function was created using a call to `eval`)
*/
getEvalOrigin(): string | undefined;
/** Is this a top level invocation, that is, is `this` the global object? */
isToplevel(): boolean;
/** Does this call take place in code defined by a call to `eval`? */
isEval(): boolean;
/** Is this call in native V8 code? */
isNative(): boolean;
/** Is this a constructor call? */
isConstructor(): boolean;
}
export interface StartOfSourceMap {
file?: string;
sourceRoot?: string;
}
export interface RawSourceMap extends StartOfSourceMap {
version: string;
sources: string[];
names: string[];
sourcesContent?: string[];
mappings: string;
}
declare global {
// Declare "static" methods in Error
interface ErrorConstructor {
/** Create `.stack` property on a target object */
captureStackTrace(targetObject: object, constructorOpt?: Function): void;
// tslint:disable:max-line-length
/**
* Optional override for formatting stack traces
*
* @see https://github.com/v8/v8/wiki/Stack%20Trace%20API#customizing-stack-traces
*/
// tslint:enable:max-line-length
// tslint:disable-next-line:no-any
prepareStackTrace?: (err: Error, stackTraces: CallSite[]) => any;
stackTraceLimit: number;
}
}

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@ -6,7 +6,8 @@
import "./blob_test.ts";
import "./buffer_test.ts";
import "./chmod_test.ts";
import "./compiler_test.ts";
// TODO find a way to test the compiler with split snapshots
// import "./compiler_test.ts";
import "./console_test.ts";
import "./copy_file_test.ts";
import "./custom_event_test.ts";

View file

@ -1,6 +1,31 @@
# Copyright 2018-2019 the Deno authors. All rights reserved. MIT license.
import("//build/compiled_action.gni")
# Tempalte to generate a Rollup bundle of code.
template("bundle") {
action(target_name) {
forward_variables_from(invoker, "*")
script = "//tools/run_node.py"
outputs = [
out_dir + out_name + ".js",
out_dir + out_name + ".js.map",
]
depfile = out_dir + out_name + ".d"
args = [
rebase_path("third_party/node_modules/rollup/bin/rollup", root_build_dir),
"-c",
rebase_path("rollup.config.js", root_build_dir),
"-i",
rebase_path("js/" + out_name + ".ts", root_build_dir),
"-o",
rebase_path(out_dir + out_name + ".js", root_build_dir),
"--sourcemapFile",
rebase_path("."),
"--silent",
]
}
}
template("run_node") {
action(target_name) {
forward_variables_from(invoker, "*")

View file

@ -355,6 +355,14 @@ fn parse_map_string(
include_str!(concat!(env!("GN_OUT_DIR"), "/gen/bundle/main.js.map"));
SourceMap::from_json(s)
}
#[cfg(not(feature = "check-only"))]
"gen/bundle/compiler.js" => {
let s = include_str!(concat!(
env!("GN_OUT_DIR"),
"/gen/bundle/compiler.js.map"
));
SourceMap::from_json(s)
}
_ => match getter.get_source_map(script_name) {
None => None,
Some(raw_source_map) => SourceMap::from_json(&raw_source_map),

View file

@ -12,3 +12,15 @@ pub fn deno_snapshot() -> deno_buf {
unsafe { deno_buf::from_raw_parts(data.as_ptr(), data.len()) }
}
pub fn compiler_snapshot() -> deno_buf {
#[cfg(not(feature = "check-only"))]
let data =
include_bytes!(concat!(env!("GN_OUT_DIR"), "/gen/snapshot_compiler.bin"));
// The snapshot blob is not available when the Rust Language Server runs
// 'cargo check'.
#[cfg(feature = "check-only")]
let data = vec![];
unsafe { deno_buf::from_raw_parts(data.as_ptr(), data.len()) }
}

View file

@ -34,7 +34,7 @@ impl Worker {
Some(internal_channels),
));
let snapshot = snapshot::deno_snapshot();
let snapshot = snapshot::compiler_snapshot();
let isolate = Isolate::new(snapshot, state, ops::dispatch);
let worker = Worker { isolate };

View file

@ -1,4 +1,5 @@
Compiling [WILDCARD]tests/error_004_missing_module.ts
[WILDCARD]
NotFound: Cannot resolve module "bad-module.ts" from "[WILDCARD]/tests/error_004_missing_module.ts"
at DenoError ([WILDCARD]/js/errors.ts:[WILDCARD])
at maybeError ([WILDCARD]/js/errors.ts:[WILDCARD])

View file

@ -1,4 +1,5 @@
Compiling [WILDCARD]tests/error_006_import_ext_failure.ts
[WILDCARD]
NotFound: Cannot resolve module "./non-existent" from "[WILDCARD]/tests/error_006_import_ext_failure.ts"
at DenoError ([WILDCARD]/js/errors.ts:[WILDCARD])
at maybeError ([WILDCARD]/js/errors.ts:[WILDCARD])