time_plan9.go

     1  // Copyright 2025 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  //go:build !faketime
     6  
     7  package runtime
     8  
     9  import _ "unsafe" // for go:linkname
    10  
    11  // Do not remove or change the type signature.
    12  // See comment in timestub.go.
    13  //
    14  //go:linkname time_now time.now
    15  func time_now() (sec int64, nsec int32, mono int64) {
    16  	var t [4]uint64
    17  	if readtime(&t[0], 1, 4) == 4 {
    18  		mono = int64(frombe(t[3])) // new kernel, use monotonic time
    19  	} else {
    20  		mono = int64(frombe(t[0])) // old kernel, fall back to unix time
    21  	}
    22  	sec, nsec = timesplit(frombe(t[0]))
    23  	return
    24  }
    25
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