On Fri, 18 Dec 2020 02:01:28 GMT, Chris Plummer <[email protected]> wrote:

> There is an assert in `JvmtiThreadState::cur_stack_depth()` that tends to 
> slow down single stepping a lot when running the debuggee with a debug jvm. 
> See CR for details. The fix is to allow disabling of this assert using the 
> new EnableJVMTIStackDepthAsserts global, which defaults to true.

This works but I'm concerned if this sets a precedent for adding expensive 
assertions? Do we already have similar flags?

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PR: https://git.openjdk.java.net/jdk/pull/1835

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