mirror of
https://github.com/Frooodle/Stirling-PDF.git
synced 2025-10-25 11:17:28 +02:00
wasm cleanup
This commit is contained in:
Felix Kaspar
parent
373c5e4c26
commit
ae99ba0fab
@ -212,6 +212,9 @@
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if (!global.crypto) {
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throw new Error("global.crypto is not available, polyfill required (getRandomValues only)");
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}
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if (!global.crypto.getRandomValues) {
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throw new Error("global.crypto.getRandomValues is not available, polyfill required (getRandomValues only)");
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}
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if (!global.performance) {
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global.performance = {
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@ -1,875 +0,0 @@
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// Copyright 2018 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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(() => {
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// Map multiple JavaScript environments to a single common API,
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// preferring web standards over Node.js API.
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//
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// Environments considered:
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// - Browsers
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// - Node.js
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// - Electron
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// - Parcel
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// - Webpack
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console.log("imported")
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if (typeof global !== "undefined") {
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// global already exists
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} else if (typeof window !== "undefined") {
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window.global = window;
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} else if (typeof self !== "undefined") {
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self.global = self;
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} else {
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throw new Error("cannot export Go (neither global, window nor self is defined)");
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}
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let logFS = false
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var handler = {
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get: function (target, property) {
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if (property in target && target[property] instanceof Function) {
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return function () {
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if (logFS) {
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console.log(property, 'called', arguments);
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}
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// 将callback替换
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if (arguments[arguments.length - 1] instanceof Function) {
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var origCB = arguments[arguments.length - 1];
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var newCB = function () {
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if (logFS) {
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console.log('callback for', property, 'get called with args:', arguments);
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}
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return Reflect.apply(origCB, arguments.callee, arguments);
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}
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arguments[arguments.length - 1] = newCB;
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}
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return Reflect.apply(target[property], target, arguments);
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}
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} else {
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return target[property]
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}
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}
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}
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if (!global.require && typeof require !== "undefined") {
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global.require = require;
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}
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if (!global.fs && global.require) {
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//const fs = require("fs");
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if (typeof fs === "object" && fs !== null && Object.keys(fs).length !== 0) {
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global.fs = fs;
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}
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}
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const enosys = () => {
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const err = new Error("not implemented");
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err.code = "ENOSYS";
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return err;
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};
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if (!global.fs) {
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let outputBuf = "";
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global.fs = {
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constants: {
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O_WRONLY: -1,
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O_RDWR: -1,
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O_CREAT: -1,
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O_TRUNC: -1,
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O_APPEND: -1,
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O_EXCL: -1
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}, // unused
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writeSync(fd, buf) {
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outputBuf += decoder.decode(buf);
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const nl = outputBuf.lastIndexOf("\n");
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if (nl != -1) {
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console.log(outputBuf.substr(0, nl));
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outputBuf = outputBuf.substr(nl + 1);
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}
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return buf.length;
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},
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write(fd, buf, offset, length, position, callback) {
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if (offset !== 0 || length !== buf.length || position !== null) {
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callback(enosys());
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return;
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}
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const n = this.writeSync(fd, buf);
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callback(null, n);
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},
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chmod(path, mode, callback) {
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callback(enosys());
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},
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chown(path, uid, gid, callback) {
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callback(enosys());
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},
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close(fd, callback) {
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callback(enosys());
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},
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fchmod(fd, mode, callback) {
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callback(enosys());
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},
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fchown(fd, uid, gid, callback) {
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callback(enosys());
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},
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fstat(fd, callback) {
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callback(enosys());
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},
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fsync(fd, callback) {
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callback(null);
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},
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ftruncate(fd, length, callback) {
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callback(enosys());
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},
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lchown(path, uid, gid, callback) {
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callback(enosys());
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},
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link(path, link, callback) {
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callback(enosys());
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},
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lstat(path, callback) {
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callback(enosys());
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},
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mkdir(path, perm, callback) {
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callback(enosys());
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},
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open(path, flags, mode, callback) {
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callback(enosys());
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},
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read(fd, buffer, offset, length, position, callback) {
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callback(enosys());
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},
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readdir(path, callback) {
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callback(enosys());
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},
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readlink(path, callback) {
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callback(enosys());
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},
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rename(from, to, callback) {
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callback(enosys());
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},
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rmdir(path, callback) {
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callback(enosys());
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},
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stat(path, callback) {
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callback(enosys());
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},
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symlink(path, link, callback) {
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callback(enosys());
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},
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truncate(path, length, callback) {
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callback(enosys());
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},
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unlink(path, callback) {
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callback(enosys());
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},
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utimes(path, atime, mtime, callback) {
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callback(enosys());
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},
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};
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}
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if (!global.process) {
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global.process = {
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getuid() {
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return -1;
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},
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getgid() {
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return -1;
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},
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geteuid() {
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return -1;
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},
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getegid() {
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return -1;
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},
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getgroups() {
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throw enosys();
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},
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pid: -1,
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ppid: -1,
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umask() {
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throw enosys();
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},
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cwd() {
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throw enosys();
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},
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chdir() {
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throw enosys();
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},
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}
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}
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// if (!global.crypto && global.require) {
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// const nodeCrypto = require("crypto");
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// global.crypto = {
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// getRandomValues(b) {
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// nodeCrypto.randomFillSync(b);
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// },
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// };
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// }
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if (!global.crypto) {
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throw new Error("global.crypto is not available, polyfill required (getRandomValues only)");
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}
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if(!global.crypto.getRandomValues) {
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throw new Error("global.crypto.getRandomValues is not available, polyfill required (getRandomValues only)");
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}
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if (!global.performance) {
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global.performance = {
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now() {
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const [sec, nsec] = process.hrtime();
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return sec * 1000 + nsec / 1000000;
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},
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};
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}
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if (!global.TextEncoder && global.require) {
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global.TextEncoder = require("util").TextEncoder;
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}
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if (!global.TextEncoder) {
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throw new Error("global.TextEncoder is not available, polyfill required");
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}
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if (!global.TextDecoder && global.require) {
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global.TextDecoder = require("util").TextDecoder;
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}
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if (!global.TextDecoder) {
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throw new Error("global.TextDecoder is not available, polyfill required");
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}
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const isNodeJS = global.process && global.process.title === "node";
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if (!isNodeJS) {
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// console.log("ini browser fs")
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// var myfs = global.BrowserFS.BFSRequire('fs');
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// global.Buffer = global.BrowserFS.BFSRequire('buffer').Buffer;
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// global.fs = myfs;
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global.fs.constants = {
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O_RDONLY: 0,
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O_WRONLY: 1,
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O_RDWR: 2,
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O_CREAT: 64,
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O_CREATE: 64,
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O_EXCL: 128,
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O_NOCTTY: 256,
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O_TRUNC: 512,
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O_APPEND: 1024,
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O_DIRECTORY: 65536,
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O_NOATIME: 262144,
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O_NOFOLLOW: 131072,
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O_SYNC: 1052672,
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O_DIRECT: 16384,
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O_NONBLOCK: 2048,
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};
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let outputBuf = "";
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global.fs.writeSyncOriginal = global.fs.writeSync
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global.fs.writeSync = function (fd, buf) {
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if (fd === 1 || fd === 2) {
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outputBuf += decoder.decode(buf);
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const nl = outputBuf.lastIndexOf("\n");
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if (nl != -1) {
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console.log(outputBuf.substr(0, nl));
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outputBuf = outputBuf.substr(nl + 1);
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}
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return buf.length;
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} else {
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return global.fs.writeSyncOriginal(...arguments);
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}
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};
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global.fs.writeOriginal = global.fs.write
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global.fs.write = function (fd, buf, offset, length, position, callback) {
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// (corresponding to STDOUT/STDERR)
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if (fd === 1 || fd === 2) {
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if (offset !== 0 || length !== buf.length || position !== null) {
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throw new Error("not implemented");
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}
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const n = this.writeSync(fd, buf);
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callback(null, n, buf);
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} else {
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// buf: read buf first
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arguments[1] = global.Buffer.from(arguments[1]);
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return global.fs.writeOriginal(...arguments);
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}
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};
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global.fs.openOriginal = global.fs.open
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global.fs.open = function (path, flags, mode, callback) {
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var myflags = 'r';
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var O = global.fs.constants;
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// Convert numeric flags to string flags
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// FIXME: maybe wrong...
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console.log("open dir?", path, 'flag', flags, myflags)
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if (flags & O.O_WRONLY) { // 'w'
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myflags = 'w';
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if (flags & O.O_EXCL) {
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myflags = 'wx';
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}
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} else if (flags & O.O_RDWR) { // 'r+' or 'w+'
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if (flags & O.O_CREAT && flags & O.O_TRUNC) { // w+
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if (flags & O.O_EXCL) {
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myflags = 'wx+';
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} else {
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myflags = 'w+';
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}
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} else { // r+
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myflags = 'r+';
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}
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} else if (flags & O.O_APPEND) { // 'a'
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console.log("append error")
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throw new Error("Not implmented");
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} else {
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// 打开文件
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myflags = 'r+';
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console.log("open dir?", path, 'flag', flags, myflags)
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}
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return global.fs.openOriginal(path, myflags, mode, callback);
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};
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global.fs.fstatOriginal = global.fs.fstat;
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global.fs.fstat = function (fd, callback) {
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return global.fs.fstatOriginal(fd, function () {
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var retStat = arguments[1];
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delete retStat['fileData'];
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retStat.atimeMs = retStat.atime.getTime();
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retStat.mtimeMs = retStat.mtime.getTime();
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retStat.ctimeMs = retStat.ctime.getTime();
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retStat.birthtimeMs = retStat.birthtime.getTime();
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return callback(arguments[0], retStat);
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});
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};
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global.fs.closeOriginal = global.fs.close;
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global.fs.close = function (fd, callback) {
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return global.fs.closeOriginal(fd, function () {
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if (typeof arguments[0] === 'undefined') arguments[0] = null;
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return callback(...arguments);
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});
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}
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// global.fs.renameOriginal = global.fs.rename
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// global.fs.rename = function (from, to, callback) {
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// console.log("rename a0", arguments[0])
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// global.fs.renameOriginal(from, to);
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// callback(arguments[0])
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// }
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// global.fs.renameSyncOriginal = global.fs.renameSync
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// global.fs.renameSync = function(fd, options) {
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// console.log("Sync")
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// }
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global.fs = new Proxy(global.fs, handler);
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}
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// End of polyfills for common API.
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const encoder = new TextEncoder("utf-8");
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const decoder = new TextDecoder("utf-8");
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global.Go = class {
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constructor() {
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this.argv = ["js"];
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this.env = {};
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this.exit = (code) => {
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this.exitCode = code;
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if (code !== 0) {
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console.warn("exit code:", code);
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}
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};
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this._exitPromise = new Promise((resolve) => {
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this._resolveExitPromise = resolve;
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});
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this._pendingEvent = null;
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this._scheduledTimeouts = new Map();
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this._nextCallbackTimeoutID = 1;
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const setInt64 = (addr, v) => {
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this.mem.setUint32(addr + 0, v, true);
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this.mem.setUint32(addr + 4, Math.floor(v / 4294967296), true);
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}
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const getInt64 = (addr) => {
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const low = this.mem.getUint32(addr + 0, true);
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const high = this.mem.getInt32(addr + 4, true);
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return low + high * 4294967296;
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}
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const loadValue = (addr) => {
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const f = this.mem.getFloat64(addr, true);
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if (f === 0) {
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return undefined;
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}
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if (!isNaN(f)) {
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return f;
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}
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const id = this.mem.getUint32(addr, true);
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return this._values[id];
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}
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const storeValue = (addr, v) => {
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const nanHead = 0x7FF80000;
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if (typeof v === "number" && v !== 0) {
|
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if (isNaN(v)) {
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this.mem.setUint32(addr + 4, nanHead, true);
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this.mem.setUint32(addr, 0, true);
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return;
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}
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this.mem.setFloat64(addr, v, true);
|
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return;
|
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}
|
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|
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if (v === undefined) {
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this.mem.setFloat64(addr, 0, true);
|
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return;
|
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}
|
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|
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let id = this._ids.get(v);
|
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if (id === undefined) {
|
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id = this._idPool.pop();
|
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if (id === undefined) {
|
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id = this._values.length;
|
||||
}
|
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this._values[id] = v;
|
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this._goRefCounts[id] = 0;
|
||||
this._ids.set(v, id);
|
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}
|
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this._goRefCounts[id]++;
|
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let typeFlag = 0;
|
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switch (typeof v) {
|
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case "object":
|
||||
if (v !== null) {
|
||||
typeFlag = 1;
|
||||
}
|
||||
break;
|
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case "string":
|
||||
typeFlag = 2;
|
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break;
|
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case "symbol":
|
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typeFlag = 3;
|
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break;
|
||||
case "function":
|
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typeFlag = 4;
|
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break;
|
||||
}
|
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this.mem.setUint32(addr + 4, nanHead | typeFlag, true);
|
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this.mem.setUint32(addr, id, true);
|
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}
|
||||
|
||||
const loadSlice = (addr) => {
|
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const array = getInt64(addr + 0);
|
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const len = getInt64(addr + 8);
|
||||
return new Uint8Array(this._inst.exports.mem.buffer, array, len);
|
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}
|
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|
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const loadSliceOfValues = (addr) => {
|
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const array = getInt64(addr + 0);
|
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const len = getInt64(addr + 8);
|
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const a = new Array(len);
|
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for (let i = 0; i < len; i++) {
|
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a[i] = loadValue(array + i * 8);
|
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}
|
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return a;
|
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}
|
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|
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const loadString = (addr) => {
|
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const saddr = getInt64(addr + 0);
|
||||
const len = getInt64(addr + 8);
|
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return decoder.decode(new DataView(this._inst.exports.mem.buffer, saddr, len));
|
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}
|
||||
|
||||
const timeOrigin = Date.now() - performance.now();
|
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this.importObject = {
|
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go: {
|
||||
// Go's SP does not change as long as no Go code is running. Some operations (e.g. calls, getters and setters)
|
||||
// may synchronously trigger a Go event handler. This makes Go code get executed in the middle of the imported
|
||||
// function. A goroutine can switch to a new stack if the current stack is too small (see morestack function).
|
||||
// This changes the SP, thus we have to update the SP used by the imported function.
|
||||
|
||||
// func wasmExit(code int32)
|
||||
"runtime.wasmExit": (sp) => {
|
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sp >>>= 0;
|
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const code = this.mem.getInt32(sp + 8, true);
|
||||
this.exited = true;
|
||||
delete this._inst;
|
||||
delete this._values;
|
||||
delete this._goRefCounts;
|
||||
delete this._ids;
|
||||
delete this._idPool;
|
||||
this.exit(code);
|
||||
},
|
||||
|
||||
// func wasmWrite(fd uintptr, p unsafe.Pointer, n int32)
|
||||
"runtime.wasmWrite": (sp) => {
|
||||
sp >>>= 0;
|
||||
const fd = getInt64(sp + 8);
|
||||
const p = getInt64(sp + 16);
|
||||
const n = this.mem.getInt32(sp + 24, true);
|
||||
fs.writeSync(fd, new Uint8Array(this._inst.exports.mem.buffer, p, n));
|
||||
},
|
||||
|
||||
// func resetMemoryDataView()
|
||||
"runtime.resetMemoryDataView": (sp) => {
|
||||
sp >>>= 0;
|
||||
this.mem = new DataView(this._inst.exports.mem.buffer);
|
||||
},
|
||||
|
||||
// func nanotime1() int64
|
||||
"runtime.nanotime1": (sp) => {
|
||||
sp >>>= 0;
|
||||
setInt64(sp + 8, (timeOrigin + performance.now()) * 1000000);
|
||||
},
|
||||
|
||||
// func walltime1() (sec int64, nsec int32)
|
||||
"runtime.walltime1": (sp) => {
|
||||
sp >>>= 0;
|
||||
const msec = (new Date).getTime();
|
||||
setInt64(sp + 8, msec / 1000);
|
||||
this.mem.setInt32(sp + 16, (msec % 1000) * 1000000, true);
|
||||
},
|
||||
|
||||
// func scheduleTimeoutEvent(delay int64) int32
|
||||
"runtime.scheduleTimeoutEvent": (sp) => {
|
||||
sp >>>= 0;
|
||||
const id = this._nextCallbackTimeoutID;
|
||||
this._nextCallbackTimeoutID++;
|
||||
this._scheduledTimeouts.set(id, setTimeout(
|
||||
() => {
|
||||
this._resume();
|
||||
while (this._scheduledTimeouts.has(id)) {
|
||||
// for some reason Go failed to register the timeout event, log and try again
|
||||
// (temporary workaround for https://github.com/golang/go/issues/28975)
|
||||
console.warn("scheduleTimeoutEvent: missed timeout event");
|
||||
this._resume();
|
||||
}
|
||||
},
|
||||
getInt64(sp + 8) + 1, // setTimeout has been seen to fire up to 1 millisecond early
|
||||
));
|
||||
this.mem.setInt32(sp + 16, id, true);
|
||||
},
|
||||
|
||||
// func clearTimeoutEvent(id int32)
|
||||
"runtime.clearTimeoutEvent": (sp) => {
|
||||
sp >>>= 0;
|
||||
const id = this.mem.getInt32(sp + 8, true);
|
||||
clearTimeout(this._scheduledTimeouts.get(id));
|
||||
this._scheduledTimeouts.delete(id);
|
||||
},
|
||||
|
||||
// func getRandomData(r []byte)
|
||||
"runtime.getRandomData": (sp) => {
|
||||
sp >>>= 0;
|
||||
crypto.getRandomValues(loadSlice(sp + 8));
|
||||
},
|
||||
|
||||
// func finalizeRef(v ref)
|
||||
"syscall/js.finalizeRef": (sp) => {
|
||||
sp >>>= 0;
|
||||
const id = this.mem.getUint32(sp + 8, true);
|
||||
this._goRefCounts[id]--;
|
||||
if (this._goRefCounts[id] === 0) {
|
||||
const v = this._values[id];
|
||||
this._values[id] = null;
|
||||
this._ids.delete(v);
|
||||
this._idPool.push(id);
|
||||
}
|
||||
},
|
||||
|
||||
// func stringVal(value string) ref
|
||||
"syscall/js.stringVal": (sp) => {
|
||||
sp >>>= 0;
|
||||
storeValue(sp + 24, loadString(sp + 8));
|
||||
},
|
||||
|
||||
// func valueGet(v ref, p string) ref
|
||||
"syscall/js.valueGet": (sp) => {
|
||||
sp >>>= 0;
|
||||
const result = Reflect.get(loadValue(sp + 8), loadString(sp + 16));
|
||||
sp = this._inst.exports.getsp() >>> 0; // see comment above
|
||||
storeValue(sp + 32, result);
|
||||
},
|
||||
|
||||
// func valueSet(v ref, p string, x ref)
|
||||
"syscall/js.valueSet": (sp) => {
|
||||
sp >>>= 0;
|
||||
Reflect.set(loadValue(sp + 8), loadString(sp + 16), loadValue(sp + 32));
|
||||
},
|
||||
|
||||
// func valueDelete(v ref, p string)
|
||||
"syscall/js.valueDelete": (sp) => {
|
||||
sp >>>= 0;
|
||||
Reflect.deleteProperty(loadValue(sp + 8), loadString(sp + 16));
|
||||
},
|
||||
|
||||
// func valueIndex(v ref, i int) ref
|
||||
"syscall/js.valueIndex": (sp) => {
|
||||
sp >>>= 0;
|
||||
storeValue(sp + 24, Reflect.get(loadValue(sp + 8), getInt64(sp + 16)));
|
||||
},
|
||||
|
||||
// valueSetIndex(v ref, i int, x ref)
|
||||
"syscall/js.valueSetIndex": (sp) => {
|
||||
sp >>>= 0;
|
||||
Reflect.set(loadValue(sp + 8), getInt64(sp + 16), loadValue(sp + 24));
|
||||
},
|
||||
|
||||
// func valueCall(v ref, m string, args []ref) (ref, bool)
|
||||
"syscall/js.valueCall": (sp) => {
|
||||
sp >>>= 0;
|
||||
try {
|
||||
const v = loadValue(sp + 8);
|
||||
const m = Reflect.get(v, loadString(sp + 16));
|
||||
const args = loadSliceOfValues(sp + 32);
|
||||
const result = Reflect.apply(m, v, args);
|
||||
sp = this._inst.exports.getsp() >>> 0; // see comment above
|
||||
storeValue(sp + 56, result);
|
||||
this.mem.setUint8(sp + 64, 1);
|
||||
} catch (err) {
|
||||
storeValue(sp + 56, err);
|
||||
this.mem.setUint8(sp + 64, 0);
|
||||
}
|
||||
},
|
||||
|
||||
// func valueInvoke(v ref, args []ref) (ref, bool)
|
||||
"syscall/js.valueInvoke": (sp) => {
|
||||
sp >>>= 0;
|
||||
try {
|
||||
const v = loadValue(sp + 8);
|
||||
const args = loadSliceOfValues(sp + 16);
|
||||
const result = Reflect.apply(v, undefined, args);
|
||||
sp = this._inst.exports.getsp() >>> 0; // see comment above
|
||||
storeValue(sp + 40, result);
|
||||
this.mem.setUint8(sp + 48, 1);
|
||||
} catch (err) {
|
||||
storeValue(sp + 40, err);
|
||||
this.mem.setUint8(sp + 48, 0);
|
||||
}
|
||||
},
|
||||
|
||||
// func valueNew(v ref, args []ref) (ref, bool)
|
||||
"syscall/js.valueNew": (sp) => {
|
||||
sp >>>= 0;
|
||||
try {
|
||||
const v = loadValue(sp + 8);
|
||||
const args = loadSliceOfValues(sp + 16);
|
||||
const result = Reflect.construct(v, args);
|
||||
sp = this._inst.exports.getsp() >>> 0; // see comment above
|
||||
storeValue(sp + 40, result);
|
||||
this.mem.setUint8(sp + 48, 1);
|
||||
} catch (err) {
|
||||
storeValue(sp + 40, err);
|
||||
this.mem.setUint8(sp + 48, 0);
|
||||
}
|
||||
},
|
||||
|
||||
// func valueLength(v ref) int
|
||||
"syscall/js.valueLength": (sp) => {
|
||||
sp >>>= 0;
|
||||
setInt64(sp + 16, parseInt(loadValue(sp + 8).length));
|
||||
},
|
||||
|
||||
// valuePrepareString(v ref) (ref, int)
|
||||
"syscall/js.valuePrepareString": (sp) => {
|
||||
sp >>>= 0;
|
||||
const str = encoder.encode(String(loadValue(sp + 8)));
|
||||
storeValue(sp + 16, str);
|
||||
setInt64(sp + 24, str.length);
|
||||
},
|
||||
|
||||
// valueLoadString(v ref, b []byte)
|
||||
"syscall/js.valueLoadString": (sp) => {
|
||||
sp >>>= 0;
|
||||
const str = loadValue(sp + 8);
|
||||
loadSlice(sp + 16).set(str);
|
||||
},
|
||||
|
||||
// func valueInstanceOf(v ref, t ref) bool
|
||||
"syscall/js.valueInstanceOf": (sp) => {
|
||||
sp >>>= 0;
|
||||
this.mem.setUint8(sp + 24, (loadValue(sp + 8) instanceof loadValue(sp + 16)) ? 1 : 0);
|
||||
},
|
||||
|
||||
// func copyBytesToGo(dst []byte, src ref) (int, bool)
|
||||
"syscall/js.copyBytesToGo": (sp) => {
|
||||
sp >>>= 0;
|
||||
const dst = loadSlice(sp + 8);
|
||||
const src = loadValue(sp + 32);
|
||||
if (!(src instanceof Uint8Array || src instanceof Uint8ClampedArray)) {
|
||||
this.mem.setUint8(sp + 48, 0);
|
||||
return;
|
||||
}
|
||||
const toCopy = src.subarray(0, dst.length);
|
||||
dst.set(toCopy);
|
||||
setInt64(sp + 40, toCopy.length);
|
||||
this.mem.setUint8(sp + 48, 1);
|
||||
},
|
||||
|
||||
// func copyBytesToJS(dst ref, src []byte) (int, bool)
|
||||
"syscall/js.copyBytesToJS": (sp) => {
|
||||
sp >>>= 0;
|
||||
const dst = loadValue(sp + 8);
|
||||
const src = loadSlice(sp + 16);
|
||||
if (!(dst instanceof Uint8Array || dst instanceof Uint8ClampedArray)) {
|
||||
this.mem.setUint8(sp + 48, 0);
|
||||
return;
|
||||
}
|
||||
const toCopy = src.subarray(0, dst.length);
|
||||
dst.set(toCopy);
|
||||
setInt64(sp + 40, toCopy.length);
|
||||
this.mem.setUint8(sp + 48, 1);
|
||||
},
|
||||
|
||||
"debug": (value) => {
|
||||
console.log(value);
|
||||
},
|
||||
}
|
||||
};
|
||||
}
|
||||
|
||||
async run(instance) {
|
||||
if (!(instance instanceof WebAssembly.Instance)) {
|
||||
throw new Error("Go.run: WebAssembly.Instance expected");
|
||||
}
|
||||
this._inst = instance;
|
||||
this.mem = new DataView(this._inst.exports.mem.buffer);
|
||||
this._values = [ // JS values that Go currently has references to, indexed by reference id
|
||||
NaN,
|
||||
0,
|
||||
null,
|
||||
true,
|
||||
false,
|
||||
global,
|
||||
this,
|
||||
];
|
||||
this._goRefCounts = new Array(this._values.length).fill(Infinity); // number of references that Go has to a JS value, indexed by reference id
|
||||
this._ids = new Map([ // mapping from JS values to reference ids
|
||||
[0, 1],
|
||||
[null, 2],
|
||||
[true, 3],
|
||||
[false, 4],
|
||||
[global, 5],
|
||||
[this, 6],
|
||||
]);
|
||||
this._idPool = []; // unused ids that have been garbage collected
|
||||
this.exited = false; // whether the Go program has exited
|
||||
|
||||
// Pass command line arguments and environment variables to WebAssembly by writing them to the linear memory.
|
||||
let offset = 4096;
|
||||
|
||||
const strPtr = (str) => {
|
||||
const ptr = offset;
|
||||
const bytes = encoder.encode(str + "\0");
|
||||
new Uint8Array(this.mem.buffer, offset, bytes.length).set(bytes);
|
||||
offset += bytes.length;
|
||||
if (offset % 8 !== 0) {
|
||||
offset += 8 - (offset % 8);
|
||||
}
|
||||
return ptr;
|
||||
};
|
||||
|
||||
const argc = this.argv.length;
|
||||
|
||||
const argvPtrs = [];
|
||||
this.argv.forEach((arg) => {
|
||||
argvPtrs.push(strPtr(arg));
|
||||
});
|
||||
argvPtrs.push(0);
|
||||
|
||||
const keys = Object.keys(this.env).sort();
|
||||
keys.forEach((key) => {
|
||||
argvPtrs.push(strPtr(`${key}=${this.env[key]}`));
|
||||
});
|
||||
argvPtrs.push(0);
|
||||
|
||||
const argv = offset;
|
||||
argvPtrs.forEach((ptr) => {
|
||||
this.mem.setUint32(offset, ptr, true);
|
||||
this.mem.setUint32(offset + 4, 0, true);
|
||||
offset += 8;
|
||||
});
|
||||
|
||||
this._inst.exports.run(argc, argv);
|
||||
if (this.exited) {
|
||||
this._resolveExitPromise();
|
||||
}
|
||||
await this._exitPromise;
|
||||
}
|
||||
|
||||
_resume() {
|
||||
if (this.exited) {
|
||||
throw new Error("Go program has already exited");
|
||||
}
|
||||
this._inst.exports.resume();
|
||||
if (this.exited) {
|
||||
this._resolveExitPromise();
|
||||
}
|
||||
}
|
||||
|
||||
_makeFuncWrapper(id) {
|
||||
const go = this;
|
||||
return function () {
|
||||
const event = {
|
||||
id: id,
|
||||
this: this,
|
||||
args: arguments
|
||||
};
|
||||
go._pendingEvent = event;
|
||||
go._resume();
|
||||
return event.result;
|
||||
};
|
||||
}
|
||||
}
|
||||
|
||||
if (
|
||||
typeof module !== "undefined" &&
|
||||
global.require &&
|
||||
global.require.main === module &&
|
||||
global.process &&
|
||||
global.process.versions &&
|
||||
!global.process.versions.electron
|
||||
) {
|
||||
if (process.argv.length < 3) {
|
||||
console.error("usage: go_js_wasm_exec [wasm binary] [arguments]");
|
||||
process.exit(1);
|
||||
}
|
||||
|
||||
const go = new Go();
|
||||
go.argv = process.argv.slice(2);
|
||||
go.env = Object.assign({
|
||||
TMPDIR: require("os").tmpdir()
|
||||
}, process.env);
|
||||
go.exit = process.exit;
|
||||
WebAssembly.instantiate(fs.readFileSync(process.argv[2]), go.importObject).then((result) => {
|
||||
process.on("exit", (code) => { // Node.js exits if no event handler is pending
|
||||
if (code === 0 && !go.exited) {
|
||||
// deadlock, make Go print error and stack traces
|
||||
go._pendingEvent = {
|
||||
id: 0
|
||||
};
|
||||
go._resume();
|
||||
}
|
||||
});
|
||||
return go.run(result.instance);
|
||||
}).catch((err) => {
|
||||
console.error(err);
|
||||
process.exit(1);
|
||||
});
|
||||
}
|
||||
})();
|
||||
Loading…
Reference in New Issue
Block a user