RFR: 8257831: Suspend with handshakes [v2]

[Robbin Ehn]

On Tue, 30 Mar 2021 17:15:52 GMT, Daniel D. Daugherty <dcubed at openjdk.org> wrote:

> This is an elegant evolution of the suspend/resume mechanism.
> 
> It is so nice to see all the suspend-equivalent stuff go away!

Thanks Dan!

> src/hotspot/share/runtime/handshake.hpp line 37:
> 
>> 35: class JavaThread;
>> 36: class ThreadSuspensionHandshake;
>> 37: class SuspendThreadHandshake;
> 
> Should these be in alpha sort order?

Thanks, fixed.

> src/hotspot/share/runtime/handshake.hpp line 147:
> 
>> 145:   bool handshake_suspend();
>> 146:   // Called from the async handshake (the trap)
>> 147:   // to stop a thread from continuing executing when suspended.
> 
> nit typo: s/continuing executing/continuing execution/

Thanks, Fixed.

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PR: https://git.openjdk.java.net/jdk/pull/3191