[roll] Roll fuchsia [starnix] Set up a channel to listen to ioctl enable and disable calls - Instead of spawning an executor to sample, we now have a channel that receives a notification when we want to start and stop sampling. We ping the receiver when we get the IOC_ENABLE calls (IOC_DISABLE TBD later). - Once a session is complete, we return so that the profiler session is available for another thread to use. - Add retries to match perfetto behavior. - We are still hardcoding a duration because the logic for IOCTL_DISABLE stop and process the samples might get complicated and I will put it in a separate CL. - Add a pointer to data_head so that we can update its value atomically, although this feature is currently commented out until we can properly implement data_head updating. - Close connections for some tests that were missing that. Multiply: fuchsia-pkg://fuchsia.com/starnix_syscalls_cpp_tests#meta/perf_event_open_test.cm Original-Bug: 428974888 Original-Reviewed-on: https://fuchsia-review.googlesource.com/c/fuchsia/+/1362361 Original-Revision: daa21e8dde51766d0c9438a219869157db60c533 GitOrigin-RevId: 7102b782c98733375b5cf878948a86567d785545 Change-Id: Ib3435543bf6530e41fbdfd141359e45c1486d9d3
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