RFR(S): 8227597: [fastdbg build] Arena::inc_bytes_allocated should get inlined

Baesken, Matthias matthias.baesken at sap.com
Fri Jul 12 05:54:39 UTC 2019

Hi Martin, looks good to me .

Please increase  the copyright year in


but  no new webrev needed .

Best regards, Matthias

From: Doerr, Martin
Sent: Donnerstag, 11. Juli 2019 17:32
To: hotspot-runtime-dev at openjdk.java.net
Cc: Baesken, Matthias <matthias.baesken at sap.com>; Lindenmaier, Goetz <goetz.lindenmaier at sap.com>; Claes Redestad <claes.redestad at oracle.com>
Subject: RFR(S): 8227597: [fastdbg build] Arena::inc_bytes_allocated should get inlined


the simple function Arena::inc_bytes_allocated can be found as CPU consuming when profiling the fastdbg build. It is located in a cpp file.
It should better get inlined to improve the performance of the fastdbg VM which is important for complex tests.
In addition, atomic 8-Byte load and store functions are available on all platforms, so the "#if defined ..." can get removed.

Here's my proposal:

Feedback is welcome.

Best regards,

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