tree b2cba34cc6019f04c80eee32f07dde580c70c1d4
parent 81b34d6f3de4a268019af0bb3d1c05d43cb1ba85
author Primiano Tucci <primiano@google.com> 1636395651 +0000
committer Primiano Tucci <primiano@google.com> 1636395651 +0000

TraceProcesor: unique_ptr<uint8_t> -> TraceBlob

A non-functional refactoring to TraceProcessor.
This CL mainly replaces all the places where we pass around
a pair of (unique_ptr<uint8_t>, size_t) with an explicit
TraceBlob.
It also simplifies a bit the TraceBlobView code, reducing
the indirection layers required to handle refcounting
(the overall refcounting principle still holds though).
The main benefit of that is removing one layer of pointer
chasing when accessing TraceBlobView.data().
The main reason of this CL is to introduce support for mmaping
the trace file on desktop (but still retain the owned-buf
semantic for wasm and platforms where mmap is not supported).

Bug: 205302474
Change-Id: I4f943bfcf0032cda910277b6d47851c73cb16316