tree 09fc6d0315d3e5f84798738bb97d0c299e3488f7
parent 5137d16ec859718fb0eb3e67f320edb0820bc0d2
author Austin Clements <austin@google.com> 1450591250 -0800
committer Austin Clements <austin@google.com> 1450721031 +0000

driver: don't use runtime/trace < Go 1.5

Currently the benchmark driver does not build prior to Go 1.5 because
it uses runtime/trace, which was added in Go 1.5. Fix this by moving
the code to start and stop tracing to a version-gated source file.

Change-Id: I3267e496ad7af80ce4fd31fa653b86206df672e1
Reviewed-on: https://go-review.googlesource.com/18067
Reviewed-by: Dmitry Vyukov <dvyukov@google.com>