print("runtime: getg:  g=", thisg, ", goid=", thisg.goid, ",  g->atomicstatus=", readgstatus(thisg), "\n")
}

// sched.lock must be held.
func checkmcount() {
	assertLockHeld(&sched.lock)

	// Exclude extra M's, which are used for cgocallback from threads
	// created in C.
	//
	// The purpose of the SetMaxThreads limit is to avoid accidental fork