From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-19.7 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id D2073C433B4 for ; Wed, 12 May 2021 12:34:09 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 9CB4A6112F for ; Wed, 12 May 2021 12:34:09 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232504AbhELMfP (ORCPT ); Wed, 12 May 2021 08:35:15 -0400 Received: from mail.kernel.org ([198.145.29.99]:56056 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232486AbhELMfO (ORCPT ); Wed, 12 May 2021 08:35:14 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 03B6761041; Wed, 12 May 2021 12:34:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1620822846; bh=X8/54ommkyt5Go8X5+Hbcai9kTbma//sxP0eeZHH9Y4=; h=From:To:Cc:Subject:Date:From; b=izWxN+DPeGXYA+WjUt7F+MRI/ifjvWJNi0kifRDQpFZ2uL7iqGN+u8AiOhr0qGpLd OHRhsurkYh/6pGrTjaR4/BE0ssTkAWS1IIpRPg17rKVGf/bW3Ml0uzGbp+vUG6TPCm UzV4tDfi7Fx3LT7yzpzc5zerW2jS8ALCe+eMweTfDBFBj3PEhq7MCIamWzeC3Ym+jT wvlAuzpplWD18jsS52u4g95rngN3AMvzvJpfqswP7JczyoZ2Mu9atwX4hcoRq4zOu3 9satxjZIDpmoR7jkJlqb3UO25bnkFOonsXL7J5l6uLHBly7B40eNS50jm9K97gG1tF XQkrCrtdlIoCA== From: Mark Brown To: Willy Tarreau Cc: linux-kernel@vger.kernel.org, Mark Brown Subject: [PATCH v3] tools/nolibc: Implement msleep() Date: Wed, 12 May 2021 13:32:15 +0100 Message-Id: <20210512123215.42321-1-broonie@kernel.org> X-Mailer: git-send-email 2.20.1 MIME-Version: 1.0 X-Patch-Hashes: v=1; h=sha256; i=WROh5SBSWd//p/Sxtx1sSZhXRJr/pNHGmfIOZDLA1ME=; m=DsG0GUH5Pq7W2vv4GT6Z0e1qoDZBWwgUNihInvr8Y2M=; p=Uq9qwA09rFw9e6qEJ6WyyeNvYSBC/dhgo3azkyzvnSk=; g=e3987dff811e06d2d493f10034fbb8ea59bf6b54 X-Patch-Sig: m=pgp; i=broonie@kernel.org; s=0xC3F436CA30F5D8EB; b=iQEzBAABCgAdFiEEreZoqmdXGLWf4p/qJNaLcl1Uh9AFAmCbyKMACgkQJNaLcl1Uh9AmaQf+Jyb p6eNIv2My43VvhLuaHv2Tmn2YF6niS1fMW5y1HbkjBD4CXtVFnJm4Q2hLMaUcBUlJ+QMQEGRJ8l+4 HtAYBOEIIRwHxOMp+hFWTZWtdZnXLTBQr5YWGQEaxug1NeUJGSloB+oFF+kMsl1SX6i3j18XoE23I SSxVX1E9ELWfckjHputFGuvMXXeTnZHOyh0FiMiySEpoRhxj4AGD9gkExmca5WEJws29XK24OOURZ IcBXoUGtMgWQonBkhB94AA5aaaJ5hXm+O/T+oJqi4d6wzoAWOhf5D5UxJXdo54NaP5BeIyGPUiB9f k4u29hmUMltyIHVaNdmbRf0nS689Dfw== Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Allow users to implement shorter delays than a full second by implementing msleep(). Signed-off-by: Mark Brown --- v3: - Return the number of milliseconds remaining if the delay does not complete. v2: - Support delays of more than a second. - Return the number of seconds remaining if the delay does not complete. tools/include/nolibc/nolibc.h | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/tools/include/nolibc/nolibc.h b/tools/include/nolibc/nolibc.h index 8b7a9830dd22..ba6b6f1ad846 100644 --- a/tools/include/nolibc/nolibc.h +++ b/tools/include/nolibc/nolibc.h @@ -2243,6 +2243,19 @@ unsigned int sleep(unsigned int seconds) return 0; } +static __attribute__((unused)) +int msleep(unsigned int msecs) +{ + struct timeval my_timeval = { msecs / 1000, (msecs % 1000) * 1000 }; + + if (sys_select(0, 0, 0, 0, &my_timeval) < 0) + return (my_timeval.tv_sec * 1000) + + (my_timeval.tv_usec / 1000) + + !!(my_timeval.tv_usec % 1000); + else + return 0; +} + static __attribute__((unused)) int stat(const char *path, struct stat *buf) { -- 2.20.1