judge: add stack size report

packages/hydrojudge/src/hosts/builtin.ts

@@ -8,9 +8,9 @@ import {
     SettingModel, StorageModel, SystemModel, TaskModel,
 } from 'hydrooj';
 import { langs } from 'hydrooj/src/model/setting';
-import { compilerVersions } from '../compiler';
 import { getConfig } from '../config';
 import { FormatError, SystemError } from '../error';
+import { compilerVersions, stackSize } from '../info';
 import { Context } from '../judge/interface';
 import logger from '../log';
 import { versionCheck } from '../sandbox';
@@ -96,19 +96,26 @@ export async function postInit(ctx) {
     };
     const parallelism = Math.max(getConfig('parallelism'), 2);
     const taskConsumer = TaskModel.consume({ type: 'judge' }, handle, true, parallelism);
-    function collectCompilerInfo() {
+    async function collectInfo() {
         const coll = db.collection('status');
-        compilerVersions(langs).then((compilers) => coll.updateOne(
+        const compilers = await compilerVersions(langs);
+        await coll.updateOne(
             { mid: info.mid, type: 'server' },
             { $set: { compilers } },
             { upsert: true },
-        )).catch((e) => logger.error(e));
+        );
+        const size = await stackSize();
+        await coll.updateOne(
+            { mid: info.mid, type: 'server' },
+            { $set: { stackSize: size } },
+            { upsert: true },
+        );
     }
     ctx.on('system/setting', () => {
         taskConsumer.setConcurrency(Math.max(getConfig('parallelism'), 2));
-        collectCompilerInfo();
+        collectInfo();
     });
-    collectCompilerInfo();
+    collectInfo();
     TaskModel.consume({ type: 'judge', priority: { $gt: -50 } }, handle);
     TaskModel.consume({ type: 'generate' }, handle);
 }

packages/hydrojudge/src/hosts/hydro.ts

@@ -7,9 +7,9 @@ import { fs, pipeRequest } from '@hydrooj/utils';
 import { LangConfig } from '@hydrooj/utils/lib/lang';
 import * as sysinfo from '@hydrooj/utils/lib/sysinfo';
 import type { JudgeResultBody } from 'hydrooj';
-import { compilerVersions } from '../compiler';
 import { getConfig } from '../config';
 import { FormatError, SystemError } from '../error';
+import { compilerVersions, stackSize as getStackSize } from '../info';
 import { Session } from '../interface';
 import log from '../log';
 import { JudgeTask } from '../task';
@@ -184,7 +184,8 @@ export default class Hydro implements Session {
             ? JSON.stringify({ key: 'config', ...config })
             : '{"key":"ping"}';
         let compilers = {};
-        let compilerVersionCallback = () => { };
+        let sendStatus = () => { };
+        let stackSize = 0;
         this.ws.on('message', (data) => {
             if (data.toString() === 'ping') {
                 this.ws.send('pong');
@@ -193,9 +194,13 @@ export default class Hydro implements Session {
             const request = JSON.parse(data.toString());
             if (request.language) {
                 this.language = request.language;
-                compilerVersions(this.language).then((res) => {
+                Promise.allSettled([
-                    compilers = res;
+                    compilerVersions(this.language),
-                    compilerVersionCallback();
+                    getStackSize(),
+                ]).then(([compiler, stack]) => {
+                    compilers = compiler.status === 'fulfilled' ? compiler.value : {};
+                    stackSize = stack.status === 'fulfilled' ? stack.value : 0;
+                    sendStatus();
                 });
             }
             if (request.task) queue.add(() => new JudgeTask(this, request.task).handle().catch((e) => log.error(e)));
@@ -214,14 +219,24 @@ export default class Hydro implements Session {
                 this.ws.send('{"key":"start"}');
                 if (!this.config.noStatus) {
                     const info = await sysinfo.get();
-                    this.ws.send(JSON.stringify({ key: 'status', info: { ...info } }));
+                    this.ws.send(JSON.stringify({ key: 'status', info: { ...info, stackSize } }));
-                    compilerVersionCallback = () => {
+                    sendStatus = () => this.ws.send(JSON.stringify({ key: 'status', info: { ...info, compilers, stackSize } }));
-                        this.ws.send(JSON.stringify({ key: 'status', info: { ...info, compilers } }));
+                    const interval = setInterval(async () => {
-                    };
-                    setInterval(async () => {
                         const [mid, inf] = await sysinfo.update();
-                        this.ws.send(JSON.stringify({ key: 'status', info: { mid, ...inf, compilers } }));
+                        this.ws.send(JSON.stringify({
+                            key: 'status',
+                            info: {
+                                mid, ...inf, compilers, stackSize,
+                            },
+                        }));
                     }, 1200000);
+                    let stopped = false;
+                    const stop = () => {
+                        if (!stopped) clearInterval(interval);
+                        stopped = true;
+                    };
+                    this.ws.on('close', stop);
+                    this.ws.on('error', stop);
                 }
                 resolve(null);
             });

packages/hydrojudge/src/info.ts

@@ -16,3 +16,13 @@ export async function compilerVersions(langs: Record<string, LangConfig>) {
     }
     return result;
 }
+
+export async function stackSize() {
+    const res = await runQueued('/bin/bash -c "ulimit -s"', {
+        copyIn: {},
+        time: 10000,
+        memory: 256,
+    }, 'stackSize', 5);
+    if (res.stderr) return -1;
+    return +res.stdout;
+}

packages/hydrojudge/src/sandbox.ts

@@ -220,7 +220,7 @@ export async function versionCheck(reportWarn: (str: string) => void, reportErro
         const config = await client.config();
         sandboxCgroup = config.runnerConfig?.cgroupType || 0;
     } catch (e) {
-        if (e?.syscall === 'connect') reportError('Connecting to sandbox failed, please check sandbox_host config and if your sandbox is running.');
+        if (e?.code === 'ECONNREFUSED') reportError('Failed to connect to sandbox, please check sandbox_host config and if your sandbox is running.');
         else reportError('Your sandbox version is tooooooo low! Please upgrade!');
         return false;
     }