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846ee0465b
Change-Id: Ibda6a5bedaff57fd161d63fc04ad260931d34413 Reviewed-on: https://go-review.googlesource.com/7142 Reviewed-by: Russ Cox <rsc@golang.org>
20 lines
556 B
Go
20 lines
556 B
Go
// Copyright 2015 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package runtime
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const (
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_AT_NULL = 0
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_AT_RANDOM = 25 // introduced in 2.6.29
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)
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var randomNumber uint32
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func cputicks() int64 {
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// Currently cputicks() is used in blocking profiler and to seed fastrand1().
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// nanotime() is a poor approximation of CPU ticks that is enough for the profiler.
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// randomNumber provides better seeding of fastrand1.
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return nanotime() + int64(randomNumber)
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}
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