-
Based on initial patches by Mikolaj Konarski <mikolaj@well-typed.com> These new eventlog events are to let profiling tools keep track of all the OS threads that belong to an RTS capability at any moment in time. In the RTS, OS threads correspond to the Task abstraction, so that is what we track. There are events for tasks being created, migrated between capabilities and deleted. In particular the task creation event also records the kernel thread id which lets us match up the OS thread with data collected by others tools (in the initial use case with Linux's perf tool, but in principle also with DTrace).
54c98b68