}

	// Prevent preemption as we set up the space for a new object.
	//
	// Act like we're allocating.
	mp := acquirem()
	if mp.mallocing != 0 {
		throw("malloc deadlock")
	}
	if mp.gsignal == getg() {
		throw("malloc during signal")
	}
	mp.mallocing = 1

	var ptr unsafe.Pointer
	if !typ.Pointers() {
		// Allocate pointer-less objects from the tail end of the chunk.

//
// Must be called from a regular goroutine that can allocate.
func (s *scavengerState) init() {
	if s.g != nil {
		throw("scavenger state is already wired")
	}
	lockInit(&s.lock, lockRankScavenge)
	s.g = getg()

	s.timer = new(timer)
	f := func(s any, _ uintptr, _ int64) {
		s.(*scavengerState).wake()
	}
	s.timer.init(f, s)

	// input: fraction of CPU time actually used.
	// setpoint: ideal CPU fraction.

		}
		c.qcount++
		unlock(&c.lock)
		return true
	}

	if !block {
		unlock(&c.lock)
		return false
	}

	// Block on the channel. Some receiver will complete our operation for us.
	gp := getg()
	mysg := acquireSudog()
	mysg.releasetime = 0
	if t0 != 0 {
		mysg.releasetime = -1
	}
	// No stack splits between assigning elem and enqueuing mysg
	// on gp.waiting where copystack can find it.

//
// nosplit because a stack growth in this function could
// lead to a stack allocation that could reenter the
// function.
//
//go:nosplit
func (m *consistentHeapStats) acquire() *heapStatsDelta {
	if pp := getg().m.p.ptr(); pp != nil {
		seq := pp.statsSeq.Add(1)
		if seq%2 == 0 {
			// Should have been incremented to odd.
			print("runtime: seq=", seq, "\n")
			throw("bad sequence number")
		}
	} else {

// the only place it is used now. In the future, this requirement
// may be relaxed if its use is necessary elsewhere.
//
//go:systemstack
func (h *mheap) tryAllocMSpan() *mspan {
	pp := getg().m.p.ptr()
	// If we don't have a p or the cache is empty, we can't do
	// anything here.
	if pp == nil || pp.mspancache.len == 0 {
		return nil
	}
	// Pull off the last entry in the cache.

			}
			if c.qcount < c.dataqsiz {
				goto bufsend
			}
		}
	}

	if !block {
		selunlock(scases, lockorder)
		casi = -1
		goto retc
	}

	// pass 2 - enqueue on all chans
	gp = getg()
	if gp.waiting != nil {
		throw("gp.waiting != nil")
	}
	nextp = &gp.waiting
	for _, casei := range lockorder {
		casi = int(casei)
		cas = &scases[casi]
		c = cas.c
		sg := acquireSudog()

}

// stringDataOnStack reports whether the string's data is
// stored on the current goroutine's stack.
func stringDataOnStack(s string) bool {
	ptr := uintptr(unsafe.Pointer(unsafe.StringData(s)))
	stk := getg().stack
	return stk.lo <= ptr && ptr < stk.hi
}

func rawstringtmp(buf *tmpBuf, l int) (s string, b []byte) {
	if buf != nil && l <= len(buf) {
		b = buf[:l]
		s = slicebytetostringtmp(&b[0], len(b))

		}

		// Examine the execution tracer's view of the CPU profile samples. Filter it
		// to only include samples from the single test goroutine. Use the goroutine
		// ID that was recorded in the events: that should reflect getg().m.curg,
		// same as the profiler's labels (even when the M is using its g0 stack).
		totalTraceSamples := 0
		traceSamples := 0
		traceStacks := make(map[string]int)
		r, err := trace.NewReader(bytes.NewReader(tb))

	}

	// Reserve space for framing header.
	l.w.ensure(debugLogHeaderSize)
	l.w.write += debugLogHeaderSize

	// Write record header.
	l.w.uvarint(tick - l.w.tick)
	l.w.uvarint(nano - l.w.nano)
	gp := getg()
	if gp != nil && gp.m != nil && gp.m.p != 0 {
		l.w.varint(int64(gp.m.p.ptr().id))
	} else {
		l.w.varint(-1)
	}

	return l
}

// A dlogger writes to the debug log.
//

	dumpgs()
	dumpms()
	dumproots()
	dumpmemstats(m)
	dumpmemprof()
	dumpint(tagEOF)
	flush()
}

func writeheapdump_m(fd uintptr, m *MemStats) {
	assertWorldStopped()

	gp := getg()
	casGToWaiting(gp.m.curg, _Grunning, waitReasonDumpingHeap)

	// Set dump file.
	dumpfd = fd

	// Call dump routine.
	mdump(m)

	// Reset dump file.
	dumpfd = 0
	if tmpbuf != nil {