RFR: 8368818: Remove duplicate dtrace macros

[David Holmes]

On Mon, 29 Sep 2025 15:05:38 GMT, Coleen Phillimore <coleenp at openjdk.org> wrote:

>> src/hotspot/share/runtime/synchronizer.cpp line 218:
>> 
>>> 216: // TODO-FIXME: probes should not fire when caller is _blocked.  assert() accordingly.
>>> 217: 
>>> 218: #define DTRACE_MONITOR_PROBE_COMMON(obj, thread)                           \
>> 
>> I agree that these shouldn't be in objectMonitor.hpp file.  With Legacy locking removed, are these still needed in synchronizer.cpp ?
>
> It would be nice to understand why these are used in general.

These are the DTrace probe points. Whether anyone still uses them ...

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PR Review Comment: https://git.openjdk.org/jdk/pull/27538#discussion_r2390119031