lock2(l)
}

// This function may be called in nosplit context and thus must be nosplit.
//
//go:nosplit
func acquireLockRankAndM(rank lockRank) {
	acquirem()
}

func unlockWithRank(l *mutex) {
	unlock2(l)
}

// This function may be called in nosplit context and thus must be nosplit.
//
//go:nosplit
func releaseLockRankAndM(rank lockRank) {
	releasem(getg().m)
}

		// observe this.
		throw("self deadlock")
	}
	gp := getg()
	if gp.m.locks < 0 {
		throw("lock count")
	}
	gp.m.locks++
	l.key = mutex_locked
}

func unlock(l *mutex) {
	unlockWithRank(l)
}

func unlock2(l *mutex) {
	if l.key == mutex_unlocked {
		throw("unlock of unlocked lock")
	}
	gp := getg()
	gp.m.locks--
	if gp.m.locks < 0 {
		throw("lock count")
	}

		if v == mutex_unlocked {
			timer.end()
			return
		}
		wait = mutex_sleeping
		futexsleep(key32(&l.key), mutex_sleeping, -1)
	}
}

func unlock(l *mutex) {
	unlockWithRank(l)
}

func unlock2(l *mutex) {
	v := atomic.Xchg(key32(&l.key), mutex_unlocked)
	if v == mutex_unlocked {
		throw("unlock of unlocked lock")
	}
	if v == mutex_sleeping {

				if v&locked == 0 {
					continue Loop
				}
			}
			if v&locked != 0 {
				// Queued. Wait.
				semasleep(-1)
				i = 0
			}
		}
	}
}

func unlock(l *mutex) {
	unlockWithRank(l)
}

// We might not be holding a p in this code.
//
//go:nowritebarrier
func unlock2(l *mutex) {
	gp := getg()
	var mp *m
	for {
		v := atomic.Loaduintptr(&l.key)
		if v == locked {

		// observe this.
		throw("self deadlock")
	}
	gp := getg()
	if gp.m.locks < 0 {
		throw("lock count")
	}
	gp.m.locks++
	l.key = mutex_locked
}

func unlock(l *mutex) {
	unlockWithRank(l)
}

func unlock2(l *mutex) {
	if l.key == mutex_unlocked {
		throw("unlock of unlocked lock")
	}
	gp := getg()
	gp.m.locks--
	if gp.m.locks < 0 {
		throw("lock count")
	}

	}
	if !rankOK {
		printlock()
		println(gp.m.procid, " ======")
		printHeldLocks(gp)
		throw("lock ordering problem")
	}
}

// See comment on lockWithRank regarding stack splitting.
func unlockWithRank(l *mutex) {
	if l == &debuglock || l == &paniclk || l == &raceFiniLock {
		// See comment at beginning of lockWithRank.
		unlock2(l)
		return
	}
	gp := getg()
	systemstack(func() {
		found := false

		// can't record a stack trace.
		return
	}

	skip := 3 // runtime.(*mLockProfile).recordUnlock runtime.unlock2 runtime.unlockWithRank
	if staticLockRanking {
		// When static lock ranking is enabled, we'll always be on the system
		// stack at this point. There will be a runtime.unlockWithRank.func1
		// frame, and if the call to runtime.unlock took place on a user stack

						// it calls runtime.unlock. Add the extra function that
						// we'll see, when the static lock ranking implementation of
						// runtime.unlockWithRank switches to the system stack.
						stk = append([]string{"runtime.unlockWithRank"}, stk...)
					}
				}
				acceptStacks[i] = stk
			}

			var stks [][]string
			values := make([][2]int64, len(acceptStacks))