[java] retiring 'breakgen' DLLs from JVM process proxy (IJPL-16521)

(cherry picked from commit 3789c7f569bc1f220aa9c7524d36ac44a3754cf0)

IJ-CR-155182

GitOrigin-RevId: a7ff75cc9cc1a54c9c1b1628fb7c89f65cf8cf8d

java/execution/impl/src/com/intellij/execution/runners/ProcessProxyFactoryImpl.java

@@ -1,4 +1,4 @@
-// Copyright 2000-2018 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
+// Copyright 2000-2025 JetBrains s.r.o. and contributors. Use of this source code is governed by the Apache 2.0 license.
 package com.intellij.execution.runners;
 
 import com.intellij.execution.ExecutionException;
@@ -12,11 +12,11 @@ import com.intellij.openapi.diagnostic.Logger;
 import com.intellij.openapi.projectRoots.JavaSdkVersion;
 import com.intellij.openapi.projectRoots.JavaSdkVersionUtil;
 import com.intellij.openapi.projectRoots.ex.JavaSdkUtil;
-import com.intellij.openapi.util.io.FileUtil;
 import com.intellij.openapi.util.text.StringUtil;
 import com.intellij.rt.execution.application.AppMainV2;
 
-import java.io.File;
+import java.nio.file.Files;
+import java.nio.file.Path;
 
 public final class ProcessProxyFactoryImpl extends ProcessProxyFactory {
   private static final boolean ourMayUseLauncher = !Boolean.getBoolean("idea.no.launcher");
@@ -27,14 +27,13 @@ public final class ProcessProxyFactoryImpl extends ProcessProxyFactory {
     String mainClass = javaParameters.getMainClass();
 
     if (ourMayUseLauncher && mainClass != null) {
-      String rtJarPath = JavaSdkUtil.getIdeaRtJarPath();
+      var rtJarPath = Path.of(JavaSdkUtil.getIdeaRtJarPath());
-      boolean runtimeJarFile = new File(rtJarPath).isFile() && FileUtil.isAncestor(PathManager.getHomePath(), rtJarPath, true);
+      var runtimeJarFile = Files.isRegularFile(rtJarPath) && rtJarPath.startsWith(PathManager.getHomePath());
 
       if (runtimeJarFile || javaParameters.getModuleName() == null) {
         try {
           ProcessProxyImpl proxy = new ProcessProxyImpl(StringUtil.getShortName(mainClass));
           String port = String.valueOf(proxy.getPortNumber());
-          String binPath = proxy.getBinPath();
           JavaSdkVersion jdkVersion = JavaSdkVersionUtil.getJavaSdkVersion(javaParameters.getJdk());
           if (jdkVersion != null && !jdkVersion.isAtLeast(JavaSdkVersion.JDK_1_7)) {
             throw new ExecutionException(JavaBundle.message("error.message.ide.does.not.support.starting.processes.using.old.java", 
@@ -42,14 +41,13 @@ public final class ProcessProxyFactoryImpl extends ProcessProxyFactory {
           }
 
           if (runtimeJarFile) {
-            javaParameters.getVMParametersList().add("-javaagent:" + rtJarPath + '=' + port + ':' + binPath);
+            javaParameters.getVMParametersList().add("-javaagent:" + rtJarPath + '=' + port);
           }
           else {
             JavaSdkUtil.addRtJar(javaParameters.getClassPath());
 
             ParametersList vmParametersList = javaParameters.getVMParametersList();
             vmParametersList.defineProperty(AppMainV2.LAUNCHER_PORT_NUMBER, port);
-            vmParametersList.defineProperty(AppMainV2.LAUNCHER_BIN_PATH, binPath);
 
             boolean isJava21preview = JavaSdkVersion.JDK_21.equals(jdkVersion) &&
                                       javaParameters.getVMParametersList().getParameters().contains(JavaParameters.JAVA_ENABLE_PREVIEW_PROPERTY);

java/execution/impl/src/com/intellij/execution/runners/ProcessProxyImpl.java

@@ -1,15 +1,13 @@
-// Copyright 2000-2024 JetBrains s.r.o. and contributors. Use of this source code is governed by the Apache 2.0 license.
+// Copyright 2000-2025 JetBrains s.r.o. and contributors. Use of this source code is governed by the Apache 2.0 license.
 package com.intellij.execution.runners;
 
 import com.intellij.execution.process.BaseOSProcessHandler;
 import com.intellij.execution.process.ProcessHandler;
 import com.intellij.execution.process.UnixProcessManager;
-import com.intellij.openapi.application.PathManager;
 import com.intellij.openapi.diagnostic.Logger;
 import com.intellij.openapi.util.Key;
 import com.intellij.openapi.util.SystemInfo;
 import com.intellij.util.ThrowableRunnable;
-import com.intellij.util.system.CpuArch;
 import org.jetbrains.annotations.NotNull;
 
 import java.io.IOException;
@@ -21,12 +19,10 @@ import java.nio.channels.AsynchronousServerSocketChannel;
 import java.nio.channels.AsynchronousSocketChannel;
 import java.nio.channels.CompletionHandler;
 import java.nio.charset.StandardCharsets;
-import java.nio.file.Path;
 import java.util.concurrent.TimeUnit;
 
 final class ProcessProxyImpl implements ProcessProxy {
   static final Key<ProcessProxyImpl> KEY = Key.create("ProcessProxyImpl");
-  private static final Path ourBreakgenHelper = SystemInfo.isWindows ? PathManager.findBinFile("breakgen.dll") : null;
 
   private final AsynchronousChannelGroup myGroup;
   private final int myPort;
@@ -37,7 +33,7 @@ final class ProcessProxyImpl implements ProcessProxy {
 
   ProcessProxyImpl(String mainClass) throws IOException {
     myGroup = AsynchronousChannelGroup.withFixedThreadPool(1, r -> new Thread(r, "Process Proxy: " + mainClass));
-    AsynchronousServerSocketChannel channel = AsynchronousServerSocketChannel.open(myGroup)
+    @SuppressWarnings("resource") var channel = AsynchronousServerSocketChannel.open(myGroup)
       .bind(new InetSocketAddress("127.0.0.1", 0))
       .setOption(StandardSocketOptions.SO_REUSEADDR, true);
     myPort = ((InetSocketAddress)channel.getLocalAddress()).getPort();
@@ -73,6 +69,7 @@ final class ProcessProxyImpl implements ProcessProxy {
     });
   }
 
+  @SuppressWarnings("SameParameterValue")
   private void writeLine(String s) {
     execute(() -> {
       ByteBuffer out = ByteBuffer.wrap((s + '\n').getBytes(StandardCharsets.US_ASCII));
@@ -82,24 +79,8 @@ final class ProcessProxyImpl implements ProcessProxy {
     });
   }
 
-  String getBinPath() {
-    if (SystemInfo.isWindows) {
-      if (ourBreakgenHelper != null) {
-        return ourBreakgenHelper.getParent().toString();
-      }
-    }
-    return PathManager.getBinPath();
-  }
-
   @Override
   public boolean canSendBreak() {
-    if (SystemInfo.isWindows && (CpuArch.isArm64() || CpuArch.isIntel64() || CpuArch.isIntel32())) {  // see also: `AppMainV2#loadHelper`
-      synchronized (myLock) {
-        if (myConnection == null) return false;
-      }
-      return ourBreakgenHelper != null;
-    }
-
     if (SystemInfo.isUnix) {
       synchronized (myLock) {
         return myPid > 0;
@@ -118,10 +99,7 @@ final class ProcessProxyImpl implements ProcessProxy {
 
   @Override
   public void sendBreak() {
-    if (SystemInfo.isWindows) {
+    if (!SystemInfo.isWindows) {
-      writeLine("BREAK");
-    }
-    else if (SystemInfo.isUnix) {
       int pid;
       synchronized (myLock) {
         pid = myPid;

java/java-runtime/src/com/intellij/rt/execution/application/AppMainV2.java

@@ -1,8 +1,7 @@
-// Copyright 2000-2022 JetBrains s.r.o. and contributors. Use of this source code is governed by the Apache 2.0 license.
+// Copyright 2000-2025 JetBrains s.r.o. and contributors. Use of this source code is governed by the Apache 2.0 license.
 package com.intellij.rt.execution.application;
 
 import java.io.BufferedReader;
-import java.io.File;
 import java.io.InputStreamReader;
 import java.lang.instrument.Instrumentation;
 import java.lang.reflect.Constructor;
@@ -17,57 +16,27 @@ import java.util.*;
  */
 public final class AppMainV2 {
   public static final String LAUNCHER_PORT_NUMBER = "idea.launcher.port";
-  public static final String LAUNCHER_BIN_PATH = "idea.launcher.bin.path";
   public static final String LAUNCHER_USE_JDK_21_PREVIEW = "idea.launcher.use.21.preview";
   private static final String LAUNCHER_MAIN_CLASS = "idea.launcher.main.class";
 
-  private static native void triggerControlBreak();
+  private static void startMonitor(final int portNumber) {
-
-  private static boolean loadHelper(String binPath) {
-    String osName = System.getProperty("os.name").toLowerCase(Locale.ENGLISH);
-    if (osName.startsWith("windows")) {
-      String arch = System.getProperty("os.arch").toLowerCase(Locale.ENGLISH);
-      //noinspection SpellCheckingInspection
-      String libName = "x86_64".equals(arch) || "amd64".equals(arch) ? "breakgen64.dll" :
-                       "aarch64".equals(arch) || "arm64".equals(arch) ? "breakgen64a.dll" :
-                       "i386".equals(arch) || "x86".equals(arch) ? "breakgen.dll" :
-                       null;  // see also: `ProcessProxyImpl#canSendBreak`
-      if (libName != null) {
-        File libFile = new File(binPath, libName);
-        if (libFile.isFile()) {
-          System.load(libFile.getAbsolutePath());
-          return true;
-        }
-      }
-    }
-
-    return false;
-  }
-
-  private static void startMonitor(final int portNumber, final boolean helperLibLoaded) {
     Thread t = new Thread("Monitor Ctrl-Break") {
       @Override
       public void run() {
-        try {
+        try (
-          try (Socket client = new Socket("127.0.0.1", portNumber)) {
+          Socket client = new Socket("127.0.0.1", portNumber);
-            try (BufferedReader reader = new BufferedReader(new InputStreamReader(client.getInputStream(), "US-ASCII"))) {
+          BufferedReader reader = new BufferedReader(new InputStreamReader(client.getInputStream(), "US-ASCII"))
+        ) {
           while (true) {
             String msg = reader.readLine();
             if (msg == null || "TERM".equals(msg)) {
               return;
             }
-                else if ("BREAK".equals(msg)) {
-                  if (helperLibLoaded) {
-                    triggerControlBreak();
-                  }
-                }
             else if ("STOP".equals(msg)) {
               System.exit(1);
             }
           }
         }
-          }
-        }
         catch (Exception ignored) { }
       }
     };
@@ -77,9 +46,8 @@ public final class AppMainV2 {
 
   public static void main(String[] args) throws Throwable {
     try {
-      boolean helperLibLoaded = loadHelper(System.getProperty(LAUNCHER_BIN_PATH));
       int portNumber = Integer.parseInt(System.getProperty(LAUNCHER_PORT_NUMBER));
-      startMonitor(portNumber, helperLibLoaded);
+      startMonitor(portNumber);
     }
     catch (Throwable t) {
       System.err.println("Launcher failed - \"Dump Threads\" and \"Exit\" actions are unavailable (" + t.getMessage() + ')');
@@ -263,10 +231,8 @@ public final class AppMainV2 {
   public static void premain(String args) {
     try {
       int p = args.indexOf(':');
-      if (p < 0) throw new IllegalArgumentException("incorrect parameter: " + args);
+      int portNumber = Integer.parseInt(p > 0 ? args.substring(0, p) : args);
-      boolean helperLibLoaded = loadHelper(args.substring(p + 1));
+      startMonitor(portNumber);
-      int portNumber = Integer.parseInt(args.substring(0, p));
-      startMonitor(portNumber, helperLibLoaded);
     }
     catch (Throwable t) {
       System.err.println("Launcher failed - \"Dump Threads\" and \"Exit\" actions are unavailable (" + t.getMessage() + ')');