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8259008: ArithmeticException was thrown at "Monitor Cache Dump" on HSDB

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Reviewed-by: dcubed, gziemski, eosterlund, cjplummer, sspitsyn
This commit is contained in:
Yasumasa Suenaga 2021-01-30 03:46:23 +00:00
parent 69ee314b63
commit 6b24e98c42
5 changed files with 149 additions and 75 deletions
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27
src/hotspot/share/runtime/synchronizer.cpp
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@ -58,31 +58,6 @@
#include "utilities/events.hpp"
#include "utilities/preserveException.hpp"
class MonitorList {
ObjectMonitor* volatile _head;
volatile size_t _count;
volatile size_t _max;
public:
void add(ObjectMonitor* monitor);
size_t unlink_deflated(Thread* self, LogStream* ls, elapsedTimer* timer_p,
GrowableArray<ObjectMonitor*>* unlinked_list);
size_t count() const;
size_t max() const;
class Iterator;
Iterator iterator() const;
};
class MonitorList::Iterator {
ObjectMonitor* _current;
public:
Iterator(ObjectMonitor* head) : _current(head) {}
bool has_next() const { return _current != NULL; }
ObjectMonitor* next();
};
void MonitorList::add(ObjectMonitor* m) {
ObjectMonitor* head;
do {
@ -240,7 +215,7 @@ void ObjectSynchronizer::initialize() {
set_in_use_list_ceiling(AvgMonitorsPerThreadEstimate);
}
static MonitorList _in_use_list;
MonitorList ObjectSynchronizer::_in_use_list;
// monitors_used_above_threshold() policy is as follows:
//
// The ratio of the current _in_use_list count to the ceiling is used