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Source file src/runtime/os_darwin_arm.go

Documentation: runtime

  // Copyright 2014 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
  var hardDiv bool // TODO: set if a hardware divider is available
  func checkgoarm() {
  	// TODO(minux): FP checks like in os_linux_arm.go.
  	// osinit not called yet, so ncpu not set: must use getncpu directly.
  	if getncpu() > 1 && goarm < 7 {
  		print("runtime: this system has multiple CPUs and must use\n")
  		print("atomic synchronization instructions. Recompile using GOARM=7.\n")
  func cputicks() int64 {
  	// Currently cputicks() is used in blocking profiler and to seed runtime·fastrand().
  	// runtime·nanotime() is a poor approximation of CPU ticks that is enough for the profiler.
  	// TODO: need more entropy to better seed fastrand.
  	return nanotime()

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