Experiment: add Fiber yield trace to SchedulerTrace #26
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Refactors
FiberTraceto use slices instead of arrays.We could avoid a duplication with a small refactor in stdlib —I'll push that before we release 1.16.0.
Augments
SchedulerTracefrom Print scheduler details (ExecutionContext) #18 to also print the yield trace of suspended fibers whenFiberTraceis also loaded.Some of the difficulty is that we're stopping the world, and I don't think it's wise or possible to allocate while the world is stopped, so we use another method to print the backtrace that doesn't (we make sure to load the debug info beforehand).