8356025: Provide a PrintVMInfoAtExit diagnostic switch

src/hotspot/share/runtime/globals.hpp

@@ -702,6 +702,9 @@ const int ObjectAlignmentInBytes = 8;
   develop(bool, PrintClassLoaderDataGraphAtExit, false,                     \
           "Print the class loader data graph at exit")                      \
                                                                             \
+  product(bool, PrintVMInfoAtExit, false, DIAGNOSTIC,                       \
+          "Executes the the VM.info diagnostic command at exit")            \
+                                                                            \
   product(bool, AllowParallelDefineClass, false,                            \
           "Allow parallel defineClass requests for class loaders "          \
           "registering as parallel capable")                                \

src/hotspot/share/runtime/java.cpp

@@ -332,6 +332,13 @@ void print_statistics() {
 
   print_bytecode_count();
 
+  if (PrintVMInfoAtExit) {
+    // Use an intermediate stream to prevent deadlocking on tty_lock
+    stringStream ss;
+    VMError::print_vm_info(&ss);
+    tty->print_raw(ss.base());
+  }
+
   if (PrintSystemDictionaryAtExit) {
     ResourceMark rm;
     MutexLocker mcld(ClassLoaderDataGraph_lock);

test/hotspot/jtreg/runtime/ErrorHandling/PrintVMInfoAtExitTest.java

@@ -0,0 +1,60 @@
+/*
+ * Copyright (c) 2025, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2025, Red Hat Inc.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+
+/*
+ * @test
+ * @summary Test PrintVMInfoAtExit
+ * @library /test/lib
+ * @modules java.base/jdk.internal.misc
+ * @requires vm.flagless
+ * @requires vm.bits == "64"
+ * @run driver PrintVMInfoAtExitTest
+ */
+
+import jdk.test.lib.process.OutputAnalyzer;
+import jdk.test.lib.process.ProcessTools;
+
+public class PrintVMInfoAtExitTest {
+
+  public static void main(String[] args) throws Exception {
+    ProcessBuilder pb = ProcessTools.createLimitedTestJavaProcessBuilder(
+            "-Xmx64M", "-Xms64M",
+            "-XX:-CreateCoredumpOnCrash",
+            "-XX:+UnlockDiagnosticVMOptions",
+            "-XX:+PrintVMInfoAtExit",
+            "-XX:NativeMemoryTracking=summary",
+            "-XX:CompressedClassSpaceSize=256m",
+            "-version");
+
+    OutputAnalyzer output_detail = new OutputAnalyzer(pb.start());
+    output_detail.shouldContain("# JRE version:");
+    output_detail.shouldContain("--  S U M M A R Y --");
+    output_detail.shouldContain("Command Line: -Xmx64M -Xms64M -XX:-CreateCoredumpOnCrash -XX:+UnlockDiagnosticVMOptions -XX:+PrintVMInfoAtExit -XX:NativeMemoryTracking=summary -XX:CompressedClassSpaceSize=256m");
+    output_detail.shouldContain("Native Memory Tracking:");
+    output_detail.shouldContain("Java Heap (reserved=65536KB, committed=65536KB)");
+  }
+}
+
+