23 lines
550 B
Go
23 lines
550 B
Go
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//go:build linux
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package hodu
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import "syscall"
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import "unsafe"
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//#include <time.h>
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//import "C"
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// C.CLOCK_MONOTONIC is more accurate when compiled with CGO.
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// I want to avoid using it. so assume it is 1 on linux
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//const CLOCK_MONOTONIC uintptr = C.CLOCK_MONOTONIC
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const CLOCK_MONOTONIC uintptr = 1
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func monotonic_time() uint64 {
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var ts syscall.Timespec
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var errno syscall.Errno
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_, _, errno = syscall.Syscall(syscall.SYS_CLOCK_GETTIME, CLOCK_MONOTONIC, uintptr(unsafe.Pointer(&ts)), 0)
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if errno != 0 { return 0 }
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return uint64(ts.Nano())
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}
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