github.com/karrick/go@v0.0.0-20170817181416-d5b0ec858b37/src/runtime/os_darwin_arm64.go (about) 1 // Copyright 2014 The Go Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style 3 // license that can be found in the LICENSE file. 4 5 package runtime 6 7 var supportCRC32 = false 8 9 //go:nosplit 10 func cputicks() int64 { 11 // Currently cputicks() is used in blocking profiler and to seed runtime·fastrand(). 12 // runtime·nanotime() is a poor approximation of CPU ticks that is enough for the profiler. 13 // TODO: need more entropy to better seed fastrand. 14 return nanotime() 15 }