JDK-8256301 : ObjectMonitor::is_busy() should return bool
- Type: Enhancement
- Component: hotspot
- Sub-Component: runtime
- Affected Version: 16
- Priority: P4
- Status: Resolved
- Resolution: Fixed
- OS: generic
- CPU: generic
- Submitted: 2020-11-12
- Updated: 2021-06-07
- Resolved: 2021-05-21
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| JDK 17 |
|---|
17 b24Fixed  |
Related Reports
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Relates :
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Description
ObjectMonitor::is_busy() in src/hotspot/share/runtime/objectMonitor.hpp
returns intptr_t:
intptr_t is_busy() const {
// TODO-FIXME: assert _owner == null implies _recursions = 0
intptr_t ret_code = _waiters | intptr_t(_cxq) | intptr_t(_EntryList);
if (contentions() > 0) {
ret_code |= contentions();
}
if (_owner != DEFLATER_MARKER) {
ret_code |= intptr_t(_owner);
}
return ret_code;
}
Generally, HotSpot style is that is_Foo() functions return bool
so ObjectMonitor::is_busy() is an anomaly.
This topic came during the discussion about:
JDK-8253064 monitor list simplifications and getting rid of TSM
Comments
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