# HG changeset patch
# User dtitov
# Date 1551893405 28800
# Node ID 6684c75ab531a7b384f24a2b81d4723ea8a70d43
# Parent  21ea4076a275a0f498afa517e9ee1b94a9cf0255
8218464: vmTestbase/nsk/jdi/VirtualMachine/allThreads/allthreads001/TestDescription.java failed
Reviewed-by: sspitsyn, gadams

diff -r 21ea4076a275 -r 6684c75ab531 test/hotspot/jtreg/vmTestbase/nsk/jdi/VirtualMachine/allThreads/allthreads001.java
--- a/test/hotspot/jtreg/vmTestbase/nsk/jdi/VirtualMachine/allThreads/allthreads001.java	Thu Feb 28 14:22:03 2019 +0100
+++ b/test/hotspot/jtreg/vmTestbase/nsk/jdi/VirtualMachine/allThreads/allthreads001.java	Wed Mar 06 09:30:05 2019 -0800
@@ -42,7 +42,7 @@
  * <code>com.sun.jdi.VirtualMachine.allThreads()</code>         <BR>
  * complies with the its spec.                                  <BR>
  * <BR>
- * The test checks up the reasults of the method when           <BR>
+ * The test checks up the results of the method when            <BR>
  * it is invoked two times in raw immediately after             <BR>
  * new thread has been started in the debuggee VM.              <BR>
  *                                                              <BR>
@@ -192,11 +192,15 @@
 
             String threadName = "testedThread";
 
+            // Suspend VM to ensure no new background thread (e.g. JVMCI
+            // compiler thread) is started between two allThreads() calls.
+            vm.suspend();
             List allThreads1 = vm.allThreads();
             log2("allThreads1.size() = " + allThreads1.size());
 
             List allThreads2 = vm.allThreads();
             log2("allThreads2.size() = " + allThreads2.size());
+            vm.resume();
 
             if ( allThreads1.size() != allThreads2.size() ) {
                 log3("ERROR:  allThreads1.size() != allThreads2.size()");