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src/hotspot/share/runtime/vframe.cpp
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rev 57232 : v2.00 -> v2.08 (CR8/v2.08/11-for-jdk14) patches combined into one; merge with jdk-14+25 snapshot; merge with jdk-14+26 snapshot.
rev 57233 : See CR8-to-CR9-changes; merge with 8230876.patch (2019.11.15); merge with jdk-14+25 snapshot; fuzzy merge with jdk-14+26 snapshot.
@@ -120,12 +120,19 @@
GrowableArray<MonitorInfo*>* mons = monitors();
GrowableArray<MonitorInfo*>* result = new GrowableArray<MonitorInfo*>(mons->length());
if (mons->is_empty()) return result;
bool found_first_monitor = false;
- ObjectMonitor *pending_monitor = thread()->current_pending_monitor();
- ObjectMonitor *waiting_monitor = thread()->current_waiting_monitor();
+ // For all of the javaVFrame::locked_monitors()() call sites, we
+ // are either at a safepoint or the calling thread is operating
+ // on itself so this ObjectMonitorHandle is not strictly necessary.
+ ObjectMonitorHandle omh;
+ ObjectMonitor *waiting_monitor = thread()->current_waiting_monitor(&omh);
+ ObjectMonitor *pending_monitor = NULL;
+ if (waiting_monitor == NULL) {
+ pending_monitor = thread()->current_pending_monitor(&omh);
+ }
oop pending_obj = (pending_monitor != NULL ? (oop) pending_monitor->object() : (oop) NULL);
oop waiting_obj = (waiting_monitor != NULL ? (oop) waiting_monitor->object() : (oop) NULL);
for (int index = (mons->length()-1); index >= 0; index--) {
MonitorInfo* monitor = mons->at(index);
@@ -229,13 +236,16 @@
// monitor before, then we need to see if we have completed
// the lock or if we are blocked trying to acquire it. Only
// an inflated monitor that is first on the monitor list in
// the first frame can block us on a monitor enter.
markWord mark = monitor->owner()->mark();
+ // The calling thread is operating on itself so this
+ // ObjectMonitorHandle is not strictly necessary.
+ ObjectMonitorHandle omh;
if (mark.has_monitor() &&
( // we have marked ourself as pending on this monitor
- mark.monitor() == thread()->current_pending_monitor() ||
+ mark.monitor() == thread()->current_pending_monitor(&omh) ||
// we are not the owner of this monitor
!mark.monitor()->is_entered(thread())
)) {
lock_state = "waiting to lock";
}
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