[!fuzz] skip

! go test -fuzz=FuzzTrivial -coverprofile=prof
! stdout .
stderr '^cannot use -coverprofile flag with -fuzz flag$'

! go test -fuzz=FuzzTrivial -blockprofile=prof
! stdout .
stderr '^cannot use -blockprofile flag with -fuzz flag$'

! go test -fuzz=FuzzTrivial -cpuprofile=prof
! stdout .
stderr '^cannot use -cpuprofile flag with -fuzz flag$'

! go test -fuzz=FuzzTrivial -memprofile=prof
! stdout .

// the test binary with the prefix "test.".
var passFlagToTest = map[string]bool{
	"bench":                true,
	"benchmem":             true,
	"benchtime":            true,
	"blockprofile":         true,
	"blockprofilerate":     true,
	"count":                true,
	"coverprofile":         true,
	"cpu":                  true,
	"cpuprofile":           true,
	"failfast":             true,

	Cycles int64
	StackRecord
}

// BlockProfile returns n, the number of records in the current blocking profile.
// If len(p) >= n, BlockProfile copies the profile into p and returns n, true.
// If len(p) < n, BlockProfile does not change p and returns n, false.
//
// Most clients should use the [runtime/pprof] package or
// the [testing] package's -test.blockprofile flag instead
// of calling BlockProfile directly.

			os.Exit(2)
		}
		f.Close()
	}
	if *blockProfile != "" && *blockProfileRate >= 0 {
		f, err := os.Create(toOutputDir(*blockProfile))
		if err != nil {
			fmt.Fprintf(os.Stderr, "testing: %s\n", err)
			os.Exit(2)
		}
		if err = m.deps.WriteProfileTo("block", f, 0); err != nil {
			fmt.Fprintf(os.Stderr, "testing: can't write %s: %s\n", *blockProfile, err)
			os.Exit(2)
		}
		f.Close()
	}

	name:  "heap",
	count: countHeap,
	write: writeHeap,
}

var allocsProfile = &Profile{
	name:  "allocs",
	count: countHeap, // identical to heap profile
	write: writeAlloc,
}

var blockProfile = &Profile{
	name:  "block",
	count: countBlock,
	write: writeBlock,
}

var mutexProfile = &Profile{
	name:  "mutex",
	count: countMutex,
	write: writeMutex,
}

func lockProfiles() {

	// to build the test in a way that supports the use of the flag.

	cf.StringVar(&testBench, "bench", "", "")
	cf.Bool("benchmem", false, "")
	cf.String("benchtime", "", "")
	cf.StringVar(&testBlockProfile, "blockprofile", "", "")
	cf.String("blockprofilerate", "", "")
	cf.Int("count", 0, "")
	cf.String("cpu", "", "")
	cf.StringVar(&testCPUProfile, "cpuprofile", "", "")
	cf.BoolVar(&testFailFast, "failfast", false, "")

profile the tests during execution:

	-benchmem
	    Print memory allocation statistics for benchmarks.
	    Allocations made in C or using C.malloc are not counted.

	-blockprofile block.out
	    Write a goroutine blocking profile to the specified file
	    when all tests are complete.
	    Writes test binary as -c would.

	-blockprofilerate n

// profile the tests during execution:
//
//	-benchmem
//	    Print memory allocation statistics for benchmarks.
//	    Allocations made in C or using C.malloc are not counted.
//
//	-blockprofile block.out
//	    Write a goroutine blocking profile to the specified file
//	    when all tests are complete.
//	    Writes test binary as -c would.
//
//	-blockprofilerate n

func totalMutexWaitTimeNanos() int64 {
	total := sched.totalMutexWaitTime.Load()

	total += sched.totalRuntimeLockWaitTime.Load()
	for mp := (*m)(atomic.Loadp(unsafe.Pointer(&allm))); mp != nil; mp = mp.alllink {
		total += mp.mLockProfile.waitTime.Load()
	}

	return total
}

// NumGoroutine returns the number of goroutines that currently exist.
func NumGoroutine() int {
	return int(gcount())
}

	v := atomic.Xchg(key32(&l.key), mutex_unlocked)
	if v == mutex_unlocked {
		throw("unlock of unlocked lock")
	}
	if v == mutex_sleeping {
		futexwakeup(key32(&l.key), 1)
	}

	gp := getg()
	gp.m.mLockProfile.recordUnlock(l)
	gp.m.locks--
	if gp.m.locks < 0 {
		throw("runtime·unlock: lock count")
	}
	if gp.m.locks == 0 && gp.preempt { // restore the preemption request in case we've cleared it in newstack