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GET /api/patches/811203/?format=api
{ "id": 811203, "url": "http://patchwork.ozlabs.org/api/patches/811203/?format=api", "web_url": "http://patchwork.ozlabs.org/project/glibc/patch/20170907224219.12483-10-albert.aribaud@3adev.fr/", "project": { "id": 41, "url": "http://patchwork.ozlabs.org/api/projects/41/?format=api", "name": "GNU C Library", "link_name": "glibc", "list_id": "libc-alpha.sourceware.org", "list_email": "libc-alpha@sourceware.org", "web_url": "", "scm_url": "", "webscm_url": "", "list_archive_url": "", "list_archive_url_format": "", "commit_url_format": "" }, "msgid": "<20170907224219.12483-10-albert.aribaud@3adev.fr>", "list_archive_url": null, "date": "2017-09-07T22:41:36", "name": "[RFC,09/52] Y2038: add function __clock_getres64", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "87056527fe703c3797d1e6523c140c24818f820c", "submitter": { "id": 65557, "url": "http://patchwork.ozlabs.org/api/people/65557/?format=api", "name": "Albert ARIBAUD (3ADEV)", "email": "albert.aribaud@3adev.fr" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/glibc/patch/20170907224219.12483-10-albert.aribaud@3adev.fr/mbox/", "series": [ { "id": 2074, "url": "http://patchwork.ozlabs.org/api/series/2074/?format=api", "web_url": "http://patchwork.ozlabs.org/project/glibc/list/?series=2074", "date": "2017-09-07T22:41:27", "name": "Make GLIBC Y2038-proof", "version": 1, "mbox": "http://patchwork.ozlabs.org/series/2074/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/811203/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/811203/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "<libc-alpha-return-84327-incoming=patchwork.ozlabs.org@sourceware.org>", "X-Original-To": "incoming@patchwork.ozlabs.org", "Delivered-To": [ "patchwork-incoming@bilbo.ozlabs.org", "mailing list libc-alpha@sourceware.org" ], "Authentication-Results": [ "ozlabs.org;\n\tspf=pass (mailfrom) smtp.mailfrom=sourceware.org\n\t(client-ip=209.132.180.131; helo=sourceware.org;\n\tenvelope-from=libc-alpha-return-84327-incoming=patchwork.ozlabs.org@sourceware.org;\n\treceiver=<UNKNOWN>)", "ozlabs.org; dkim=pass (1024-bit key;\n\tsecure) header.d=sourceware.org header.i=@sourceware.org\n\theader.b=\"VRdXg3I3\"; dkim-atps=neutral", "sourceware.org; auth=none" ], "Received": [ "from sourceware.org (server1.sourceware.org [209.132.180.131])\n\t(using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256\n\tbits)) (No client certificate requested)\n\tby ozlabs.org (Postfix) with ESMTPS id 3xpFr252Y1z9sCZ\n\tfor <incoming@patchwork.ozlabs.org>;\n\tFri, 8 Sep 2017 08:44:18 +1000 (AEST)", "(qmail 66407 invoked by alias); 7 Sep 2017 22:43:08 -0000", "(qmail 66339 invoked by uid 89); 7 Sep 2017 22:43:08 -0000" ], "DomainKey-Signature": "a=rsa-sha1; c=nofws; d=sourceware.org; h=list-id\n\t:list-unsubscribe:list-subscribe:list-archive:list-post\n\t:list-help:sender:from:to:cc:subject:date:message-id:in-reply-to\n\t:references; q=dns; s=default; b=F4yqlzY+LfRVO6nJRerg1bfC9I2NO4I\n\tOPrcgBJSpNcstgr1OAWaqI45GUTzWYkFxY7mGEKuTZZ+4NwFqaB/IITyWgfszRm8\n\t1K/QMgVuK9m+mmKzMXMWTWsrCe+HjJJlG27ZZi8iA5iXsoBDBOGMoWKIvjOCo9Fv\n\tTxrZCKDtiuL0=", "DKIM-Signature": "v=1; a=rsa-sha1; c=relaxed; d=sourceware.org; h=list-id\n\t:list-unsubscribe:list-subscribe:list-archive:list-post\n\t:list-help:sender:from:to:cc:subject:date:message-id:in-reply-to\n\t:references; s=default; bh=J5sY312bQVEDA7c8AZUxofu8vnw=; b=VRdXg\n\t3I3HcbF9Xu2fXDc5pKKY/s7P9yl4c7FH4sZOopwdcvTSnymbALFdQFljkwbvaf2e\n\tglqfTBAtI/S9bfTiIcj6uHDzxXNh6s6Ejhj/qKwH17alW1BsXu7USHa5O3jNpdJq\n\tfx3qaOBNzkmHCKYRABrtP9e4SaE8fnx5HzUOXw=", "Mailing-List": "contact libc-alpha-help@sourceware.org; run by ezmlm", "Precedence": "bulk", "List-Id": "<libc-alpha.sourceware.org>", "List-Unsubscribe": "<mailto:libc-alpha-unsubscribe-incoming=patchwork.ozlabs.org@sourceware.org>", "List-Subscribe": "<mailto:libc-alpha-subscribe@sourceware.org>", "List-Archive": "<http://sourceware.org/ml/libc-alpha/>", "List-Post": "<mailto:libc-alpha@sourceware.org>", "List-Help": "<mailto:libc-alpha-help@sourceware.org>,\n\t<http://sourceware.org/ml/#faqs>", "Sender": "libc-alpha-owner@sourceware.org", "X-Virus-Found": "No", "X-Spam-SWARE-Status": "No, score=-26.6 required=5.0 tests=BAYES_00, GIT_PATCH_0,\n\tGIT_PATCH_1, GIT_PATCH_2, GIT_PATCH_3,\n\tKAM_LAZY_DOMAIN_SECURITY,\n\tRCVD_IN_DNSWL_LOW autolearn=ham version=3.3.2 spammy=", "X-HELO": "smtp6-g21.free.fr", "From": "\"Albert ARIBAUD (3ADEV)\" <albert.aribaud@3adev.fr>", "To": "libc-alpha@sourceware.org", "Cc": "\"Albert ARIBAUD (3ADEV)\" <albert.aribaud@3adev.fr>", "Subject": "[RFC PATCH 09/52] Y2038: add function __clock_getres64", "Date": "Fri, 8 Sep 2017 00:41:36 +0200", "Message-Id": "<20170907224219.12483-10-albert.aribaud@3adev.fr>", "In-Reply-To": "<20170907224219.12483-9-albert.aribaud@3adev.fr>", "References": "<20170907224219.12483-1-albert.aribaud@3adev.fr>\n\t<20170907224219.12483-2-albert.aribaud@3adev.fr>\n\t<20170907224219.12483-3-albert.aribaud@3adev.fr>\n\t<20170907224219.12483-4-albert.aribaud@3adev.fr>\n\t<20170907224219.12483-5-albert.aribaud@3adev.fr>\n\t<20170907224219.12483-6-albert.aribaud@3adev.fr>\n\t<20170907224219.12483-7-albert.aribaud@3adev.fr>\n\t<20170907224219.12483-8-albert.aribaud@3adev.fr>\n\t<20170907224219.12483-9-albert.aribaud@3adev.fr>" }, "content": "Signed-off-by: Albert ARIBAUD (3ADEV) <albert.aribaud@3adev.fr>\n---\n include/time.h | 2 +\n sysdeps/posix/clock_getres.c | 87 +++++++++++++++++++++++++++++++++-\n sysdeps/unix/sysv/linux/arm/Versions | 1 +\n sysdeps/unix/sysv/linux/clock_getres.c | 40 ++++++++++++++++\n 4 files changed, 129 insertions(+), 1 deletion(-)", "diff": "diff --git a/include/time.h b/include/time.h\nindex 63237e23f4..00bdb2853a 100644\n--- a/include/time.h\n+++ b/include/time.h\n@@ -52,6 +52,8 @@ extern int __clock_gettime64 (clockid_t __clock_id,\n \t\t\t struct __timespec64 *__tp) __THROW;\n extern int __clock_settime64 (clockid_t __clock_id,\n \t\t\t const struct __timespec64 *__tp) __THROW;\n+extern int __clock_getres64 (clockid_t __clock_id,\n+\t\t\t struct __timespec64 *__res) __THROW;\n \n /* Now define the internal interfaces. */\n struct tm;\ndiff --git a/sysdeps/posix/clock_getres.c b/sysdeps/posix/clock_getres.c\nindex b6248bef2c..3b74014d41 100644\n--- a/sysdeps/posix/clock_getres.c\n+++ b/sysdeps/posix/clock_getres.c\n@@ -23,7 +23,6 @@\n #include <sys/param.h>\n #include <libc-internal.h>\n \n-\n #if HP_TIMING_AVAIL\n static long int nsec;\t\t/* Clock frequency of the processor. */\n \n@@ -53,6 +52,33 @@ hp_timing_getres (struct timespec *res)\n \n return 0;\n }\n+\n+static int\n+hp_timing_getres64 (struct __timespec64 *res)\n+{\n+ if (__glibc_unlikely (nsec == 0))\n+ {\n+ hp_timing_t freq;\n+\n+ /* This can only happen if we haven't initialized the `nsec'\n+\t variable yet. Do this now. We don't have to protect this\n+\t code against multiple execution since all of them should\n+\t lead to the same result. */\n+ freq = __get_clockfreq ();\n+ if (__glibc_unlikely (freq == 0))\n+\t/* Something went wrong. */\n+\treturn -1;\n+\n+ nsec = MAX (UINT64_C (1000000000) / freq, 1);\n+ }\n+\n+ /* Fill in the values.\n+ The seconds are always zero (unless we have a 1Hz machine). */\n+ res->tv_sec = 0;\n+ res->tv_nsec = nsec;\n+\n+ return 0;\n+}\n #endif\n \n static inline int\n@@ -73,6 +99,24 @@ realtime_getres (struct timespec *res)\n return -1;\n }\n \n+static inline int\n+realtime_getres64 (struct __timespec64 *res)\n+{\n+ long int clk_tck = sysconf (_SC_CLK_TCK);\n+\n+ if (__glibc_likely (clk_tck != -1))\n+ {\n+ /* This implementation assumes that the realtime clock has a\n+\t resolution higher than 1 second. This is the case for any\n+\t reasonable implementation. */\n+ res->tv_sec = 0;\n+ res->tv_nsec = 1000000000 / clk_tck;\n+ return 0;\n+ }\n+\n+ return -1;\n+}\n+\n \n /* Get resolution of clock. */\n int\n@@ -116,3 +160,44 @@ __clock_getres (clockid_t clock_id, struct timespec *res)\n return retval;\n }\n weak_alias (__clock_getres, clock_getres)\n+\n+int\n+__clock_getres64 (clockid_t clock_id, struct __timespec64 *res)\n+{\n+ int retval = -1;\n+\n+ switch (clock_id)\n+ {\n+#ifdef SYSDEP_GETRES64\n+ SYSDEP_GETRES64;\n+#endif\n+\n+#ifndef HANDLED_REALTIME64\n+ case CLOCK_REALTIME64:\n+ retval = realtime_getres64 (res);\n+ break;\n+#endif\t/* handled REALTIME */\n+\n+ default:\n+#ifdef SYSDEP_GETRES_CPU64\n+ SYSDEP_GETRES_CPU64;\n+#endif\n+#if HP_TIMING_AVAIL\n+ if ((clock_id & ((1 << CLOCK_IDFIELD_SIZE) - 1))\n+\t == CLOCK_THREAD_CPUTIME_ID)\n+\tretval = hp_timing_getres64 (res);\n+ else\n+#endif\n+\t__set_errno (EINVAL);\n+ break;\n+\n+#if HP_TIMING_AVAIL && !defined HANDLED_CPUTIME\n+ case CLOCK_PROCESS_CPUTIME_ID:\n+ case CLOCK_THREAD_CPUTIME_ID:\n+ retval = hp_timing_getres64 (res);\n+ break;\n+#endif\n+ }\n+\n+ return retval;\n+}\ndiff --git a/sysdeps/unix/sysv/linux/arm/Versions b/sysdeps/unix/sysv/linux/arm/Versions\nindex 553cdd7543..4b03cce526 100644\n--- a/sysdeps/unix/sysv/linux/arm/Versions\n+++ b/sysdeps/unix/sysv/linux/arm/Versions\n@@ -31,5 +31,6 @@ libc {\n __vdso_clock_gettime64;\n __y2038_kernel_support;\n __clock_settime64;\n+ __clock_getres64;\n }\n }\ndiff --git a/sysdeps/unix/sysv/linux/clock_getres.c b/sysdeps/unix/sysv/linux/clock_getres.c\nindex 2b7bb65e55..095b284b23 100644\n--- a/sysdeps/unix/sysv/linux/clock_getres.c\n+++ b/sysdeps/unix/sysv/linux/clock_getres.c\n@@ -48,4 +48,44 @@\n #define SYSDEP_GETRES_CPU SYSCALL_GETRES\n #define SYSDEP_GETRES_CPUTIME\t/* Default catches them too. */\n \n+/* The 64-bit version */\n+\n+extern int __y2038_linux_support;\n+\n+#define SYSCALL_GETRES64 \\\n+ if (__y2038_linux_support)\t\t\t\t\t\t \\\n+ {\t\t\t\t\t\t\t\t\t \\\n+ retval = INLINE_VSYSCALL (clock_getres64, 2, clock_id, res); \t \\\n+ }\t\t\t\t\t\t\t\t\t \\\n+ else\t\t\t\t\t\t\t\t\t \\\n+ {\t\t\t\t\t\t\t\t\t \\\n+ retval = INLINE_VSYSCALL (clock_getres, 2, clock_id, &ts32);\t \\\n+ if (retval==0)\t\t\t\t\t\t\t \\\n+ {\t\t\t\t\t\t\t\t \\\n+ res->tv_sec = ts32.tv_sec;\t\t \t \\\n+ res->tv_nsec = ts32.tv_nsec;\t\t\t\t\t \\\n+ res->tv_pad = 0;\t\t\t\t \t \\\n+ }\t\t\t\t\t\t\t\t \\\n+ }\t\t\t\t\t\t\t\t\t \\\n+ break\n+\n+/* The REALTIME and MONOTONIC clock are definitely supported in the\n+ kernel. */\n+#define SYSDEP_GETRES64\t\t\t\t\t\t\t \\\n+ SYSDEP_GETRES_CPUTIME64\t\t\t\t\t\t \\\n+ case CLOCK_REALTIME:\t\t\t\t\t\t\t \\\n+ case CLOCK_MONOTONIC:\t\t\t\t\t\t\t \\\n+ case CLOCK_MONOTONIC_RAW:\t\t\t\t\t\t \\\n+ case CLOCK_REALTIME_COARSE:\t\t\t\t\t\t \\\n+ case CLOCK_MONOTONIC_COARSE:\t\t\t\t\t\t \\\n+ SYSCALL_GETRES64\n+\n+/* We handled the REALTIME clock here. */\n+#define HANDLED_REALTIME64\t1\n+#define HANDLED_CPUTIME64\t1\n+\n+#define SYSDEP_GETRES_CPU64 SYSCALL_GETRES64\n+#define SYSDEP_GETRES_CPUTIME64 \\\n+ struct timespec ts32;\n+ \n #include <sysdeps/posix/clock_getres.c>\n", "prefixes": [ "RFC", "09/52" ] }