If g1 sets its labels and then they are copied into a profile buffer
and then g2 reads the profile buffer and inspects the labels,
the race detector must understand that g1's recording of the labels
happens before g2's use of the labels. Make that so.
Fixes race test failure in CL 39613.
Change-Id: Id7cda1c2aac6f8eef49213b5ca414f7154b4acfa
Reviewed-on: https://go-review.googlesource.com/42111
Run-TryBot: Russ Cox <rsc@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Michael Matloob <matloob@golang.org>
This change defines runtime/pprof.SetGoroutineLabels and runtime/pprof.Do, which
are used to set profiler labels on goroutines. The change defines functions
in the runtime for setting and getting profile labels, and sets and unsets
profile labels when goroutines are created and deleted. The change also adds
the package runtime/internal/proflabel, which defines the structure the runtime
uses to store profile labels.
Change-Id: I747a4400141f89b6e8160dab6aa94ca9f0d4c94d
Reviewed-on: https://go-review.googlesource.com/34198
Run-TryBot: Michael Matloob <matloob@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Russ Cox <rsc@golang.org>
Reviewed-on: https://go-review.googlesource.com/35010
