From owner-dev-commits-src-branches@freebsd.org Sun Sep 12 16:35:28 2021 Return-Path: Delivered-To: dev-commits-src-branches@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id C46F76694E5; Sun, 12 Sep 2021 16:35:28 +0000 (UTC) (envelope-from git@FreeBSD.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "R3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4H6wFr4c13z3ndK; Sun, 12 Sep 2021 16:35:28 +0000 (UTC) (envelope-from git@FreeBSD.org) Received: from gitrepo.freebsd.org (gitrepo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:5]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id 7D65216FDB; Sun, 12 Sep 2021 16:35:28 +0000 (UTC) (envelope-from git@FreeBSD.org) Received: from gitrepo.freebsd.org ([127.0.1.44]) by gitrepo.freebsd.org (8.16.1/8.16.1) with ESMTP id 18CGZSfH074169; Sun, 12 Sep 2021 16:35:28 GMT (envelope-from git@gitrepo.freebsd.org) Received: (from git@localhost) by gitrepo.freebsd.org (8.16.1/8.16.1/Submit) id 18CGZSu3074168; Sun, 12 Sep 2021 16:35:28 GMT (envelope-from git) Date: Sun, 12 Sep 2021 16:35:28 GMT Message-Id: <202109121635.18CGZSu3074168@gitrepo.freebsd.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-branches@FreeBSD.org From: Warner Losh Subject: git: d7535fb3e3cb - stable/13 - time.h: reduce CLOCK_ namespace pollution, move to _clock_id.h MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-Git-Committer: imp X-Git-Repository: src X-Git-Refname: refs/heads/stable/13 X-Git-Reftype: branch X-Git-Commit: d7535fb3e3cbb772b618bb33b54ee7cb9148ea31 Auto-Submitted: auto-generated X-BeenThere: dev-commits-src-branches@freebsd.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Commits to the stable branches of the FreeBSD src repository List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 12 Sep 2021 16:35:28 -0000 The branch stable/13 has been updated by imp: URL: https://cgit.FreeBSD.org/src/commit/?id=d7535fb3e3cbb772b618bb33b54ee7cb9148ea31 commit d7535fb3e3cbb772b618bb33b54ee7cb9148ea31 Author: Warner Losh AuthorDate: 2021-07-30 23:10:56 +0000 Commit: Warner Losh CommitDate: 2021-09-12 15:56:16 +0000 time.h: reduce CLOCK_ namespace pollution, move to _clock_id.h Attempt to comply with the strict namespace pollution requirements of _POSIX_C_SOURCE. Add guards to limit visitbility of CLOCK_ and TIMER_ defines as appropriate. Only define the CLOCK_ variables relevant to the specific standards. Move all the sharing to sys/_clock_id.h and make time.h and sys/time.h both include that rather than copy due to the now large number of clocks and compat defines. Please note: The old time.h previously used these newer dates: CLOCK_REALTIME 199506 CLOCK_MONOTONIC 200112 CLOCK_THREAD_CPUTIME_ID 200112 CLOCK_PROCESS_CPUTIME_ID 200112 but glibc defines all of these for 199309. glibc uses this date for all these values, however, only CLOCK_REALTIME was in IEEE 1003.1b. Add a comment about this to document it. A large number of programs and libraries assume that these will be defined for _POSIX_C_SOURCE = 199309. In addition, leak CLOCK_UPTIME_FAST for the pocl package until it can be updated to use a simple CLOCK_MONOTONIC. Reviewed by: kib Sponsored by: Netflix Differential Revision: https://reviews.freebsd.org/D31056 (cherry picked from commit 7b797ba27a714594dac910035d857e653d566b19) --- include/time.h | 30 +---------------- sys/sys/_clock_id.h | 95 +++++++++++++++++++++++++++++++++++++++++++++++++++++ sys/sys/time.h | 28 +--------------- 3 files changed, 97 insertions(+), 56 deletions(-) diff --git a/include/time.h b/include/time.h index 2a9bcb6a1107..a64a331ee52e 100644 --- a/include/time.h +++ b/include/time.h @@ -46,6 +46,7 @@ #include #include #include +#include #if __POSIX_VISIBLE > 0 && __POSIX_VISIBLE < 200112 || __BSD_VISIBLE /* @@ -97,35 +98,6 @@ typedef __pid_t pid_t; #endif #endif -/* These macros are also in sys/time.h. */ -#if !defined(CLOCK_REALTIME) && __POSIX_VISIBLE >= 199506 -#define CLOCK_REALTIME 0 -#endif /* !defined(CLOCK_REALTIME) && __POSIX_VISIBLE >= 199506 */ -#if !defined(CLOCK_VIRTUAL) && __BSD_VISIBLE -#define CLOCK_VIRTUAL 1 -#define CLOCK_PROF 2 -#endif /* !defined(CLOCK_VIRTUAL) && __BSD_VISIBLE */ -#if !defined(CLOCK_MONOTONIC) && __POSIX_VISIBLE >= 200112 -#define CLOCK_MONOTONIC 4 -#define CLOCK_UPTIME 5 /* FreeBSD-specific. */ -#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_MONOTONIC_PRECISE 11 /* FreeBSD-specific. */ -#define CLOCK_MONOTONIC_FAST 12 /* FreeBSD-specific. */ -#define CLOCK_SECOND 13 /* FreeBSD-specific. */ -#define CLOCK_THREAD_CPUTIME_ID 14 -#define CLOCK_PROCESS_CPUTIME_ID 15 -#endif /* !defined(CLOCK_MONOTONIC) && __POSIX_VISIBLE >= 200112 */ - -#if __BSD_VISIBLE -#define TIMER_RELTIME 0x0 /* relative timer */ -#endif -#if !defined(TIMER_ABSTIME) && __POSIX_VISIBLE >= 199506 -#define TIMER_ABSTIME 0x1 /* absolute timer */ -#endif /* !defined(TIMER_ABSTIME) && __POSIX_VISIBLE >= 199506 */ - struct tm { int tm_sec; /* seconds after the minute [0-60] */ int tm_min; /* minutes after the hour [0-59] */ diff --git a/sys/sys/_clock_id.h b/sys/sys/_clock_id.h new file mode 100644 index 000000000000..f0a25ce0f3f1 --- /dev/null +++ b/sys/sys/_clock_id.h @@ -0,0 +1,95 @@ +/*- + * SPDX-License-Identifier: BSD-3-Clause + * + * Copyright (c) 1989, 1993 + * The Regents of the University of California. All rights reserved. + * (c) UNIX System Laboratories, Inc. + * All or some portions of this file are derived from material licensed + * to the University of California by American Telephone and Telegraph + * Co. or Unix System Laboratories, Inc. and are reproduced herein with + * the permission of UNIX System Laboratories, Inc. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * @(#)time.h 8.3 (Berkeley) 1/21/94 + */ + +#ifndef _SYS_SYS__CLOCK_ID_H +#define _SYS_SYS__CLOCK_ID_H + +/* + * These macros are shared between time.h and sys/time.h. + */ + +/* + * Note: The values shown below as a comment for the __POSIX_VISIBLE values are + * the ones FreeBSD traditionally used based on our reading of the POSIX + * standards. However, glibc uses 199309 for all of them, even those many were + * not defined there. To remain bug compatible with glibc means more software + * that relied on the glibc behavior will compile easily on FreeBSD. + * + * Also, CLOCK_UPTIME_FAST is improperly visible temporarily for the lang/pocl + * port until it can be updated properly. It incorrectly assumes that this was a + * standard value. It will be moved back to the __BSD_VISIBLE section once the + * issue is corrected. + */ + +#if __POSIX_VISIBLE >= 199309 /* 199506 */ +#define CLOCK_REALTIME 0 +#endif /* __POSIX_VISIBLE >= 199309 */ +#ifdef __BSD_VISIBLE +#define CLOCK_VIRTUAL 1 +#define CLOCK_PROF 2 +#endif /* __BSD_VISIBLE */ +#if __POSIX_VISIBLE >= 199309 /* 200112 */ +#define CLOCK_MONOTONIC 4 +#define CLOCK_UPTIME_FAST 8 +#endif /* __POSIX_VISIBLE >= 199309 */ +#ifdef __BSD_VISIBLE +/* + * FreeBSD-specific clocks. + */ +#define CLOCK_UPTIME 5 +#define CLOCK_UPTIME_PRECISE 7 +#define CLOCK_REALTIME_PRECISE 9 +#define CLOCK_REALTIME_FAST 10 +#define CLOCK_MONOTONIC_PRECISE 11 +#define CLOCK_MONOTONIC_FAST 12 +#define CLOCK_SECOND 13 +#endif /* __BSD_VISIBLE */ + +#if __POSIX_VISIBLE >= 199309 /* 200112 */ +#define CLOCK_THREAD_CPUTIME_ID 14 +#define CLOCK_PROCESS_CPUTIME_ID 15 +#endif /* __POSIX_VISIBLE >= 199309 */ + +#if __BSD_VISIBLE +#define TIMER_RELTIME 0x0 /* relative timer */ +#endif +#if __POSIX_VISIBLE >= 199309 +#define TIMER_ABSTIME 0x1 /* absolute timer */ +#endif /* __POSIX_VISIBLE >= 199309 */ + +#endif /* _SYS_SYS__CLOCK_ID_H */ diff --git a/sys/sys/time.h b/sys/sys/time.h index a48aa3fe5548..866a9e788cd0 100644 --- a/sys/sys/time.h +++ b/sys/sys/time.h @@ -38,6 +38,7 @@ #include #include #include +#include struct timezone { int tz_minuteswest; /* minutes west of Greenwich */ @@ -471,33 +472,6 @@ struct clockinfo { int profhz; /* profiling clock frequency */ }; -/* These macros are also in time.h. */ -#ifndef CLOCK_REALTIME -#define CLOCK_REALTIME 0 -#endif -#ifndef CLOCK_VIRTUAL -#define CLOCK_VIRTUAL 1 -#define CLOCK_PROF 2 -#endif -#ifndef CLOCK_MONOTONIC -#define CLOCK_MONOTONIC 4 -#define CLOCK_UPTIME 5 /* FreeBSD-specific. */ -#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_MONOTONIC_PRECISE 11 /* FreeBSD-specific. */ -#define CLOCK_MONOTONIC_FAST 12 /* FreeBSD-specific. */ -#define CLOCK_SECOND 13 /* FreeBSD-specific. */ -#define CLOCK_THREAD_CPUTIME_ID 14 -#define CLOCK_PROCESS_CPUTIME_ID 15 -#endif - -#ifndef TIMER_ABSTIME -#define TIMER_RELTIME 0x0 /* relative timer */ -#define TIMER_ABSTIME 0x1 /* absolute timer */ -#endif - #if __BSD_VISIBLE #define CPUCLOCK_WHICH_PID 0 #define CPUCLOCK_WHICH_TID 1