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runtime: add traceEnabled function

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This change introduces the trivial traceEnabled function to help tighten
up the execution tracer's API in preparation for the execution trace
redesign GOEXPERIMENT.

A follow-up change will refactor the runtime to use it.

Change-Id: I19c8728e30aefe543b4a826d95446affa14897e3
Reviewed-on: https://go-review.googlesource.com/c/go/+/494180
Run-TryBot: Michael Knyszek <mknyszek@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Auto-Submit: Michael Knyszek <mknyszek@google.com>
Reviewed-by: Michael Pratt <mpratt@google.com>
This commit is contained in:
Michael Anthony Knyszek 2023-05-09 19:36:13 +00:00 committed by Gopher Robot
parent a2737b1aab
commit 3e9876cd3a
1 changed files with 5 additions and 0 deletions
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5
src/runtime/trace.go
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@ -206,6 +206,11 @@ func traceBufPtrOf(b *traceBuf) traceBufPtr {
return traceBufPtr(unsafe.Pointer(b))
}
// traceEnabled returns true if the trace is currently enabled.
func traceEnabled() bool {
return trace.enabled
}
// StartTrace enables tracing for the current process.
// While tracing, the data will be buffered and available via ReadTrace.
// StartTrace returns an error if tracing is already enabled.