feat(build): add Maven thread count setting (#1800)

Signed-off-by: Inf1mum <[email protected]>

src/bindings.ts

@@ -5349,6 +5349,11 @@ export type MavenSettings = {
 	 *  `mvnd` on `PATH` / common install dirs. Only used when `daemon` is on.
 	 */
 	mvndHome?: string,
+	/**
+	 *  Thread count of Maven builds (`-T`): a number of threads (`4`) or a core
+	 *  multiplier (`2C`, `2.5C`); empty = Maven's default (one thread per module).
+	 */
+	threads?: string,
 };
 
 export type MemoryCategory = 

src/features/settings/__tests__/languages.test.ts

@@ -26,7 +26,7 @@ describe("languages settings", () => {
         jdtlsVmArgs: " -Xmx2g ",
         jdk: 21,
         jdtlsJdk: " /opt/jdk-25 ",
-        maven: { home: " /opt/maven ", daemon: "yes", mvndHome: " /opt/mvnd " },
+        maven: { home: " /opt/maven ", daemon: "yes", mvndHome: " /opt/mvnd ", threads: " 2C " },
       },
     });
     expect(v.python).toEqual({ interpreter: "/usr/bin/python3", activateVirtualenv: true });
@@ -45,8 +45,10 @@ describe("languages settings", () => {
       linkedProjects: [],
       daemon: false,
       mvndHome: "/opt/mvnd",
+      threads: "2C",
     });
     expect(validateSettings({}).languages).toEqual(DEFAULT_LANGUAGES);
+    expect(validateLanguages({ java: { maven: { threads: 4 } } }).java.maven.threads).toBe("");
   });
 
   it("keeps the Ruby interpreter through settings normalization and defaults to Auto", () => {

src/features/settings/languages/LanguagePages.tsx

@@ -477,6 +477,8 @@ export function GradlePage() {
 
 export function MavenPage() {
   const [daemon, setDaemon] = useSetting<boolean>("languages.java.maven.daemon");
+  const [threads, setThreads] = useSetting<string>("languages.java.maven.threads");
+  const id = useId();
   return (
     <div className={styles.page}>
       <Section>
@@ -506,6 +508,23 @@ export function MavenPage() {
           title="Select Local Repository"
           hint="Passed as -Dmaven.repo.local."
         />
+        <Row
+          label="Thread count"
+          htmlFor={id}
+          hint="Passed as -T to Maven builds and run configurations: a thread count (4) or a core multiplier (2C, 2.5C) for parallel builds of multi-module projects. Empty runs Maven serially."
+        >
+          <span className={styles.pathRow}>
+            <Input
+              id={id}
+              mono
+              className={styles.pathInput}
+              value={threads}
+              placeholder="4, 2C"
+              onChange={(e) => setThreads(e.target.value.trim())}
+              aria-label="Thread count"
+            />
+          </span>
+        </Row>
         <Toggle
           label="Use Maven Daemon (mvnd)"
           checked={daemon}

src/features/settings/pages/execution.tsx

@@ -144,7 +144,20 @@ export const EXECUTION_PAGES: PageSpec[] = [
     group: BUILD_GROUP,
     // IntelliJ IDEA: Build Tools › Maven, before Console / Debugger.
     order: 359,
-    keywords: ["maven home", "mvn", "mvnw", "wrapper", "settings.xml", "user settings", "local repository", "m2"],
+    keywords: [
+      "maven home",
+      "mvn",
+      "mvnw",
+      "wrapper",
+      "settings.xml",
+      "user settings",
+      "local repository",
+      "m2",
+      "thread count",
+      "threads",
+      "-T",
+      "parallel",
+    ],
     component: MavenPage,
   },
   {

src/platform/languageSettings.ts

@@ -128,6 +128,8 @@ export interface LanguagesValid {
       linkedProjects: string[];
       daemon: boolean;
       mvndHome: string;
+      /** `-T`: a thread count (4) or a core multiplier (2C, 2.5C); empty = Maven's default. */
+      threads: string;
     };
   };
   /** Preview font size in px; `null` follows the editor font size. */
@@ -181,6 +183,7 @@ export const DEFAULT_LANGUAGES: LanguagesValid = {
       linkedProjects: [],
       daemon: false,
       mvndHome: "",
+      threads: "",
     },
   },
   markdown: { previewFontSize: null },
@@ -331,6 +334,7 @@ export function validateLanguages(raw: unknown): LanguagesValid {
         linkedProjects: folders(maven.linkedProjects),
         daemon: bool(maven.daemon, d.java.maven.daemon),
         mvndHome: text(maven.mvndHome, d.java.maven.mvndHome),
+        threads: text(maven.threads, d.java.maven.threads),
       },
     },
     markdown: { previewFontSize: previewSize(markdown.previewFontSize) },

src/platform/locales/text/zh.json

@@ -1272,6 +1272,9 @@
   "Maven sync finished with errors": "Maven 同步完成，但有错误",
   "Maven wrapper, else mvn on PATH": "Maven wrapper，否则使用 PATH 中的 mvn",
   "MVND_HOME, else auto-detected": "MVND_HOME，否则自动检测",
+  "Passed as -T to Maven builds and run configurations: a thread count (4) or a core multiplier (2C, 2.5C) for parallel builds of multi-module projects. Empty runs Maven serially.": "以 -T 传给 Maven 构建和运行配置：线程数（如 4）或内核倍数（如 2C、2.5C），用于多模块工程的并行构建。留空则串行运行 Maven。",
+  "Thread count": "线程数",
+  "4, 2C": "4、2C",
   "Maximize": "最大化",
   "Maximize Tool Window": "最大化工具窗口",
   "Maximum local history size per project": "每个项目的最大本地历史记录大小",