src/hotspot/os/linux/os_linux.cpp

rev 47287 : Port 09.17.Thread_SMR_logging_update from JDK9 to JDK10
rev 47289 : eosterlund, stefank CR - refactor code into threadSMR.cpp and threadSMR.hpp
rev 47292 : stefank, coleenp CR - refactor most JavaThreadIterator usage to use JavaThreadIteratorWithHandle.

@@ -1833,13 +1833,11 @@
   //
   // Need to check _stack_is_executable again as multiple VM_LinuxDllLoad
   // may have been queued at the same time.
 
   if (!_stack_is_executable) {
-    ThreadsListHandle tlh;
-    JavaThreadIterator jti(tlh.list());
-    for (JavaThread *jt = jti.first(); jt != NULL; jt = jti.next()) {
+    for (JavaThreadIteratorWithHandle jtiwh; JavaThread *jt = jtiwh.next(); ) {
       if (!jt->stack_guard_zone_unused() &&     // Stack not yet fully initialized
           jt->stack_guards_enabled()) {         // No pending stack overflow exceptions
         if (!os::guard_memory((char *)jt->stack_end(), jt->stack_guard_zone_size())) {
           warning("Attempt to reguard stack yellow zone failed.");
         }