src/share/vm/runtime/vmThread.cpp
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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>
@@ -33,10 +33,11 @@
#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
@@ -363,11 +364,27 @@
#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(