src/share/vm/runtime/vmThread.cpp

rev 4773 : 8005849: JEP 167: Event-Based JVM Tracing
Reviewed-by: acorn, coleenp, sla
Contributed-by: Karen Kinnear <karen.kinnear@oracle.com>, Bengt Rutisson <bengt.rutisson@oracle.com>, Calvin Cheung <calvin.cheung@oracle.com>, Erik Gahlin <erik.gahlin@oracle.com>, Erik Helin <erik.helin@oracle.com>, Jesper Wilhelmsson <jesper.wilhelmsson@oracle.com>, Keith McGuigan <keith.mcguigan@oracle.com>, Mattias Tobiasson <mattias.tobiasson@oracle.com>, Markus Gronlund <markus.gronlund@oracle.com>, Mikael Auno <mikael.auno@oracle.com>, Nils Eliasson <nils.eliasson@oracle.com>, Nils Loodin <nils.loodin@oracle.com>, Rickard Backman <rickard.backman@oracle.com>, Staffan Larsen <staffan.larsen@oracle.com>, Stefan Karlsson <stefan.karlsson@oracle.com>, Yekaterina Kantserova <yekaterina.kantserova@oracle.com>

*** 33,42 ****
--- 33,43 ----
  #include "runtime/os.hpp"
  #include "runtime/thread.inline.hpp"
  #include "runtime/vmThread.hpp"
  #include "runtime/vm_operations.hpp"
  #include "services/runtimeService.hpp"
+ #include "trace/tracing.hpp"
  #include "utilities/dtrace.hpp"
  #include "utilities/events.hpp"
  #include "utilities/xmlstream.hpp"
  
  #ifndef USDT2
*** 363,373 ****
--- 364,390 ----
  #else /* USDT2 */
      HOTSPOT_VMOPS_BEGIN(
                       (char *) op->name(), strlen(op->name()),
                       op->evaluation_mode());
  #endif /* USDT2 */
+ 
+     EventExecuteVMOperation event;
+ 
      op->evaluate();
+ 
+     if (event.should_commit()) {
+       bool is_concurrent = op->evaluate_concurrently();
+       event.set_operation(op->type());
+       event.set_safepoint(op->evaluate_at_safepoint());
+       event.set_blocking(!is_concurrent);
+       // Only write caller thread information for non-concurrent vm operations.
+       // For concurrent vm operations, the thread id is set to 0 indicating thread is unknown.
+       // This is because the caller thread could have exited already.
+       event.set_caller(is_concurrent ? 0 : op->calling_thread()->osthread()->thread_id());
+       event.commit();
+     }
+ 
  #ifndef USDT2
      HS_DTRACE_PROBE3(hotspot, vmops__end, op->name(), strlen(op->name()),
                       op->evaluation_mode());
  #else /* USDT2 */
      HOTSPOT_VMOPS_END(