8268425: Show decimal nid of OSThread instead of hex format one

Reviewed-by: stuefe, kevinw

Author: y1yang0

src/hotspot/share/runtime/osThread.cpp

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 2019, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 2021, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -38,7 +38,7 @@ OSThread::~OSThread() {
 
 // Printing
 void OSThread::print_on(outputStream *st) const {
-  st->print("nid=0x%x ", thread_id());
+  st->print("nid=" UINT64_FORMAT " ", (uint64_t)thread_id());
   switch (_state) {
     case ALLOCATED:               st->print("allocated ");                 break;
     case INITIALIZED:             st->print("initialized ");               break;

src/jdk.hotspot.agent/share/classes/sun/jvm/hotspot/runtime/JavaThread.java

@@ -487,7 +487,7 @@ public void printThreadInfoOn(PrintStream out){
     out.print(" tid=");
     out.print(this.getAddress());
     out.print(" nid=");
-    out.print(String.format("0x%x ",this.getOSThread().threadId()));
+    out.print(String.format("%d ",this.getOSThread().threadId()));
     out.print(getOSThread().getThreadState().getPrintVal());
     out.print(" [");
     if(this.getLastJavaSP() == null){

test/hotspot/jtreg/serviceability/sa/JhsdbThreadInfoTest.java

@@ -60,8 +60,9 @@ public static void main(String[] args) throws Exception {
             System.out.println(out.getStdout());
             System.err.println(out.getStderr());
 
-            out.shouldMatch("\".+\" #\\d+ daemon prio=\\d+ tid=0x[0-9a-f]+ nid=0x[0-9a-f]+ .+ \\[0x[0-9a-f]+]");
-            out.shouldMatch("\"main\" #\\d+ prio=\\d+ tid=0x[0-9a-f]+ nid=0x[0-9a-f]+ .+ \\[0x[0-9a-f]+]");
+            // The character class \p{XDigit} matches any hexadecimal character.
+            out.shouldMatch("\".+\" #\\d+ daemon prio=\\d+ tid=0x\\p{XDigit}+ nid=\\d+ .+ \\[0x\\p{XDigit}+]");
+            out.shouldMatch("\"main\" #\\d+ prio=\\d+ tid=0x\\p{XDigit}+ nid=\\d+ .+ \\[0x\\p{XDigit}+]");
             out.shouldMatch("   java.lang.Thread.State: .+");
             out.shouldMatch("   JavaThread state: _thread_.+");