// Do the part that isn't allowed to have write barriers.
	wirep(pp)

	// Have p; write barriers now allowed.

	// Perform deferred mcache flush before this P can allocate
	// from a potentially stale mcache.
	pp.mcache.prepareForSweep()

	trace := traceAcquire()
	if trace.ok() {
		trace.ProcStart()
		traceRelease(trace)
	}
}

// wirep is the first step of acquirep, which actually associates the

// in the header instead.
//
// Likewise, if the handler didn't set a Content-Type, we sniff that
// from the initial chunk of output.
//
// The Writers are wired together like:
//
//  1. *response (the ResponseWriter) ->
//  2. (*response).w, a [*bufio.Writer] of bufferBeforeChunkingSize bytes ->
//  3. chunkWriter.Writer (whose writeHeader finalizes Content-Length/Type)

	}
}

// Tests regarding the ordering of Write, WriteHeader, Header, and
// Flush calls. In Go 1.0, rw.WriteHeader immediately flushed the
// (*response).header to the wire. In Go 1.1, the actual wire flush is
// delayed, so we could maybe tack on a Content-Length and better
// Content-Type after we see more (or all) of the output. To preserve
// compatibility with Go 1, we need to be careful to track which

	sh := b.Shell(a)
	p := a.Package
	p.Internal.Cover.Cfg = a.Objdir + "coveragecfg"
	pcfg := covcmd.CoverPkgConfig{
		PkgPath: p.ImportPath,
		PkgName: p.Name,
		// Note: coverage granularity is currently hard-wired to
		// 'perblock'; there isn't a way using "go build -cover" or "go
		// test -cover" to select it. This may change in the future
		// depending on user demand.
		Granularity: "perblock",