Attachment 226198 Details for Bug 256941 – Proposed patch for defines

[patch] Proposed patch for defines

clock.diff (text/plain), 2.35 KB, created by Warner Losh on 2021-07-03 17:15:25 UTC

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Creator: Warner Losh

Created: 2021-07-03 17:15:25 UTC

Size: 2.35 KB

patch

obsolete

>commit 48d3c81a263058003f6f16e5c06418ca403720b1
>Author: Warner Losh <imp@FreeBSD.org>
>Date:   Thu Jul 1 14:11:07 2021 -0600
>
>    clock_gettime: Add aliases for CLOCK_{REALTIME,MONOTONIC}_COARSE
>    
>    Linux standardized what we call CLOCK_{REALTIME,MONOTONIC}_FAST as
>    CLOCK_{REALTIME,MONOTONIC}_COARSE. Add aliases to time.h and document
>    these new aliases in clock_gettime(2).
>    
>    Sponsored by:           Netflix
>
>diff --git a/lib/libc/sys/clock_gettime.2 b/lib/libc/sys/clock_gettime.2
>index 4552819ea902..5d7d2240a938 100644
>--- a/lib/libc/sys/clock_gettime.2
>+++ b/lib/libc/sys/clock_gettime.2
>@@ -29,7 +29,7 @@
> .\"
> .\" $FreeBSD$
> .\"
>-.Dd May 13, 2021
>+.Dd July 1, 2021
> .Dt CLOCK_GETTIME 2
> .Os
> .Sh NAME
>@@ -68,10 +68,12 @@ as well as the following values:
> .It Dv CLOCK_REALTIME
> .It Dv CLOCK_REALTIME_PRECISE
> .It Dv CLOCK_REALTIME_FAST
>+.It Dv CLOCK_REALTIME_COARSE
> Increments as a wall clock should.
> .It Dv CLOCK_MONOTONIC
> .It Dv CLOCK_MONOTONIC_PRECISE
> .It Dv CLOCK_MONOTONIC_FAST
>+.It Dv CLOCK_MONOTONIC_COARSE
> Increments in SI seconds.
> .It Dv CLOCK_UPTIME
> .It Dv CLOCK_UPTIME_PRECISE
>@@ -104,6 +106,11 @@ Similarly,
> .Fa CLOCK_UPTIME_PRECISE
> are used to get the most exact value as possible, at the expense of
> execution time.
>+Finally, the clock IDs
>+.Fa CLOCK_REALTIME_COARSE ,
>+.Fa CLOCK_MONOTONIC_COARSE
>+are aliases of corresponding IDs with _FAST suffix for compatibility with other
>+systems.
> .Pp
> The structure pointed to by
> .Fa tp
>diff --git a/sys/sys/time.h b/sys/sys/time.h
>index a48aa3fe5548..9fbae544cb27 100644
>--- a/sys/sys/time.h
>+++ b/sys/sys/time.h
>@@ -482,12 +482,15 @@ struct clockinfo {
> #ifndef CLOCK_MONOTONIC
> #define	CLOCK_MONOTONIC	4
> #define	CLOCK_UPTIME	5		/* FreeBSD-specific. */
>+#define	CLOCK_BOOTTIME		CLOCK_UPTIME		/* Linux compat */
> #define	CLOCK_UPTIME_PRECISE	7	/* FreeBSD-specific. */
> #define	CLOCK_UPTIME_FAST	8	/* FreeBSD-specific. */
> #define	CLOCK_REALTIME_PRECISE	9	/* FreeBSD-specific. */
> #define	CLOCK_REALTIME_FAST	10	/* FreeBSD-specific. */
>+#define	CLOCK_REALTIME_COARSE	CLOCK_REALTIME_FAST	/* Linux compat */
> #define	CLOCK_MONOTONIC_PRECISE	11	/* FreeBSD-specific. */
> #define	CLOCK_MONOTONIC_FAST	12	/* FreeBSD-specific. */
>+#define	CLOCK_MONOTONIC_COARSE	CLOCK_MONOTONIC_FAST	/* Linux compat */
> #define	CLOCK_SECOND	13		/* FreeBSD-specific. */
> #define	CLOCK_THREAD_CPUTIME_ID	14
> #define	CLOCK_PROCESS_CPUTIME_ID	15

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