runtime: new profile buffer implementation supporting label pointers
The existing CPU profiling buffer is a slice of uintptr, but we want to start including profiling label data in the profiles, and those labels need to be pointers in order to let them describe rich information. This CL implements a new profBuf type that holds both a slice of uint64 for data and a slice of unsafe.Pointer for profiling labels (aka tags). Making the runtime use these buffers will happen in followup CLs. Change-Id: I9ff16b532d8edaf4ce0cbba1098229a561834efc Reviewed-on: https://go-review.googlesource.com/36713 Run-TryBot: Russ Cox <rsc@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by:Austin Clements <austin@google.com>
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src/runtime/profbuf.go
0 → 100644
src/runtime/profbuf_test.go
0 → 100644
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