// Called to initialize a new m (including the bootstrap m).
// Called on the new thread, cannot allocate memory.
func minit() {
	getg().m.procid = uint64(lwp_gettid())
	minitSignals()
}

// Called from dropm to undo the effect of an minit.
//
//go:nosplit
func unminit() {
	unminitSignals()
	getg().m.procid = 0
}

// Called from exitm, but not from drop, to undo the effect of thread-owned

	// FreeBSD users are running a patched kernel. See issue #15658.
	if gp := getg(); !isarchive && !islibrary && gp.m == &m0 && gp == gp.m.g0 {
		st := stackt{ss_flags: _SS_DISABLE}
		sigaltstack(&st, nil)
	}

	minitSignals()
}

// Called from dropm to undo the effect of an minit.
//
//go:nosplit
func unminit() {
	unminitSignals()
	getg().m.procid = 0
}

// so it emits the test and keeps the call, giving the desired
// escape analysis result. The test is cheaper than the call.
var cgoAlwaysFalse bool

var cgo_yield = &_cgo_yield

func cgoNoCallback(v bool) {
	g := getg()
	if g.nocgocallback && v {
		panic("runtime: unexpected setting cgoNoCallback")
	}
	g.nocgocallback = v

		print("runtime: found obj at *(", hex(base), "+", hex(off), ")\n")

		// Dump the source (base) object
		gcDumpObject("base", base, off)

		// Dump the object
		gcDumpObject("obj", obj, ^uintptr(0))

		getg().m.traceback = 2
		throw("checkmark found unmarked object")
	}

	ai := arenaIndex(obj)
	arena := mheap_.arenas[ai.l1()][ai.l2()]
	arenaWord := (obj / heapArenaBytes / 8) % uintptr(len(arena.checkmarks.b))

func minit() {
	asmcgocall(unsafe.Pointer(abi.FuncPCABI0(miniterrno)), unsafe.Pointer(&libc____errno))

	minitSignals()

	getg().m.procid = uint64(pthread_self())
}

// Called from dropm to undo the effect of an minit.
func unminit() {
	unminitSignals()
	getg().m.procid = 0
}

// Called from exitm, but not from drop, to undo the effect of thread-owned

	if t.ts != nil {
		assertLockHeld(&t.ts.mu)
	}
	if raceenabled {
		// Note that we are running on a system stack,
		// so there is no chance of getg().m being reassigned
		// out from under us while this function executes.
		tsLocal := &getg().m.p.ptr().timers
		if tsLocal.raceCtx == 0 {
			tsLocal.raceCtx = racegostart(abi.FuncPCABIInternal((*timers).run) + sys.PCQuantum)
		}

// Do not remove or change the type signature.
// See go.dev/issue/67401.
//
//go:linkname atomicwb
//go:nosplit
func atomicwb(ptr *unsafe.Pointer, new unsafe.Pointer) {
	slot := (*uintptr)(unsafe.Pointer(ptr))
	buf := getg().m.p.ptr().wbBuf.get2()
	buf[0] = *slot
	buf[1] = uintptr(new)
}

// atomicstorep performs *ptr = new atomically and invokes a write barrier.
//
//go:nosplit

func netpoll(delay int64) (gList, int32) {
	if iocphandle == _INVALID_HANDLE_VALUE {
		return gList{}, 0
	}

	var entries [64]overlappedEntry
	var wait uint32
	var toRun gList
	mp := getg().m

	if delay >= 1e15 {
		// An arbitrary cap on how long to wait for a timer.
		// 1e15 ns == ~11.5 days.
		delay = 1e15
	}

	if delay > 0 && mp.waitIocpHandle != 0 {

	}
	// Examine the CPU profiler's view. Filter it to only include samples from
	// the single test goroutine. Use labels to execute that filter: they should
	// apply to all work done while that goroutine is getg().m.curg, and they
	// should apply to no other goroutines.
	pprofStacks := make(map[string]int)
	for _, s := range prof.Sample {
		if s.Label["tracing"] != nil {
			var fns []string
			var leaf string

			// mark using checkmark bits, to check that we
			// didn't forget to mark anything during the
			// concurrent mark process.
			startCheckmarks()
			gcResetMarkState()
			gcw := &getg().m.p.ptr().gcw
			gcDrain(gcw, 0)
			wbBufFlush1(getg().m.p.ptr())
			gcw.dispose()
			endCheckmarks()
		}

		// marking is complete so we can turn the write barrier off
		setGCPhase(_GCoff)
		stwSwept = gcSweep(work.mode)