Two years ago, I still planned to implement a new version of AsyncGetCallTrace in Java. This plan didn’t materialize, but Erik Österlund had the idea to fully walk the stack at safepoints during the discussions. Walking stacks only at safepoints normally would incur a safepoint-bias (see The Inner Workings of Safepoints), but when you record some program state in signal handlers, you can prevent this. I wrote about this idea and its basic implementation in Taming the Bias: Unbiased Safepoint-Based Stack Walking. I’ll revisit this topic in this week’s short blog post because Markus Grönlund took Erik’s idea and started implementing it for the standard JFR method sampler:
Continue readingMonthly Archives: May 2025
CAP in the pocket: Developing Java Applications on your Phone
Smartphones are more powerful then ever, with processors rivaling old laptops. So let’s try to use them like a laptop to develop web-applications on the go. In this weeks blog post I’ll show you how to do use run and develop a CAP Java Spring Boot application on your smartphone and how to run VSCode locally to develop and modify it. This, of course, works only on Android phones, as they are a Linux at their core.
