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139 lines (122 loc) · 3.14 KB
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import {
SynStart,
SynEnd,
wait,
notify,
SharedBoolean,
SharedString,
SharedNumber,
Syc,
isMainThread,
addFunc,
Runnable,
Thread,
} from './ThreadBridge';
export function sharedWash(runnable: Runnable) {
let archetype: Runnable;
if (runnable.className === 'Reader') {
archetype = new Reader((runnable as Reader).resource);
} else if (runnable.className === 'Writer') {
archetype = new Writer(
(runnable as Writer).resource,
(runnable as Writer).newData.getValue()
);
} else {
archetype = new Thread();
}
addFunc(runnable, archetype);
runnable.run();
}
class SharedResource {
private data = new SharedNumber(0);
private isWriting = new SharedBoolean(false);
private readers = new SharedNumber(0);
public syn: Syc = new Syc();
public static staticSyn: Syc = new Syc();
public className: string = 'SharedResource';
public async readData(): Promise<void> {
while (this.isWriting.getValue()) {
for (let i = 0; i < 1000; i++);
}
{
SynStart(this.syn);
this.readers.setValue(this.readers.getValue() + 1);
SynEnd(this.syn);
}
console.log('Reading data: ' + this.data.getValue());
{
SynStart(this.syn);
this.readers.setValue(this.readers.getValue() - 1);
SynEnd(this.syn);
}
}
public async writeData(newData: number): Promise<void> {
while (this.readers.getValue() > 0 || this.isWriting.getValue()) {
for (let i = 0; i < 1000; i++);
}
{
SynStart(this.syn);
this.isWriting.setValue(true);
console.log('Writing data: ' + newData);
this.data.setValue(newData);
this.isWriting.setValue(false);
SynEnd(this.syn);
}
}
}
class Reader implements Runnable {
public syn: Syc = new Syc();
public static staticSyn: Syc = new Syc();
public className: string = 'Reader';
private resource: SharedResource;
constructor(resource: SharedResource) {
this.resource = resource;
}
run(): void {
try {
this.resource.readData();
} catch (e) {
if (e instanceof Error) {
console.error(e);
}
}
}
}
class Writer implements Runnable {
public syn: Syc = new Syc();
public static staticSyn: Syc = new Syc();
public className: string = 'Writer';
private resource: SharedResource;
private newData = new SharedNumber();
constructor(resource: SharedResource, newData: number) {
this.resource = resource;
this.newData.setValue(newData);
}
run(): void {
try {
this.resource.writeData(this.newData.getValue());
} catch (e) {
if (e instanceof Error) {
console.error(e);
}
}
}
}
class Main {
public syn: Syc = new Syc();
public static staticSyn: Syc = new Syc();
public className: string = 'Main';
static main(args: string[]): void {
const resource = new SharedResource();
for (let i = 0; i < 5; i++) {
const readerThread = new Thread(new Reader(resource));
readerThread.start();
}
const newData = 42;
const writerThread = new Thread(new Writer(resource, newData));
writerThread.start();
}
}
if (isMainThread()) {
// You can put the entry of your code here to test.
}