// Copyright 2009 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

package runtime

import (
	
	
)

// GOMAXPROCS sets the maximum number of CPUs that can be executing
// simultaneously and returns the previous setting. It defaults to
// the value of runtime.NumCPU. If n < 1, it does not change the current setting.
// This call will go away when the scheduler improves.
func ( int) int {
	if GOARCH == "wasm" &&  > 1 {
		 = 1 // WebAssembly has no threads yet, so only one CPU is possible.
	}

	lock(&sched.lock)
	 := int(gomaxprocs)
	unlock(&sched.lock)
	if  <= 0 ||  ==  {
		return 
	}

	stopTheWorldGC(stwGOMAXPROCS)

	// newprocs will be processed by startTheWorld
	newprocs = int32()

	startTheWorldGC()
	return 
}

// NumCPU returns the number of logical CPUs usable by the current process.
//
// The set of available CPUs is checked by querying the operating system
// at process startup. Changes to operating system CPU allocation after
// process startup are not reflected.
func () int {
	return int(ncpu)
}

// NumCgoCall returns the number of cgo calls made by the current process.
func () int64 {
	var  = int64(atomic.Load64(&ncgocall))
	for  := (*m)(atomic.Loadp(unsafe.Pointer(&allm)));  != nil;  = .alllink {
		 += int64(.ncgocall)
	}
	return 
}

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

//go:linkname debug_modinfo runtime/debug.modinfo
func () string {
	return modinfo
}

// mayMoreStackPreempt is a maymorestack hook that forces a preemption
// at every possible cooperative preemption point.
//
// This is valuable to apply to the runtime, which can be sensitive to
// preemption points. To apply this to all preemption points in the
// runtime and runtime-like code, use the following in bash or zsh:
//
//	X=(-{gc,asm}flags={runtime/...,reflect,sync}=-d=maymorestack=runtime.mayMoreStackPreempt) GOFLAGS=${X[@]}
//
// This must be deeply nosplit because it is called from a function
// prologue before the stack is set up and because the compiler will
// call it from any splittable prologue (leading to infinite
// recursion).
//
// Ideally it should also use very little stack because the linker
// doesn't currently account for this in nosplit stack depth checking.
//
// Ensure mayMoreStackPreempt can be called for all ABIs.
//
//go:nosplit
//go:linkname mayMoreStackPreempt
func () {
	// Don't do anything on the g0 or gsignal stack.
	 := getg()
	if  == .m.g0 ||  == .m.gsignal {
		return
	}
	// Force a preemption, unless the stack is already poisoned.
	if .stackguard0 < stackPoisonMin {
		.stackguard0 = stackPreempt
	}
}

// mayMoreStackMove is a maymorestack hook that forces stack movement
// at every possible point.
//
// See mayMoreStackPreempt.
//
//go:nosplit
//go:linkname mayMoreStackMove
func () {
	// Don't do anything on the g0 or gsignal stack.
	 := getg()
	if  == .m.g0 ||  == .m.gsignal {
		return
	}
	// Force stack movement, unless the stack is already poisoned.
	if .stackguard0 < stackPoisonMin {
		.stackguard0 = stackForceMove
	}
}