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 7A156C433B4 for ; Wed, 12 May 2021 11:51:20 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 44E3E613D6 for ; Wed, 12 May 2021 11:51:20 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230184AbhELLw0 (ORCPT ); Wed, 12 May 2021 07:52:26 -0400 Received: from mail.kernel.org ([198.145.29.99]:50138 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230037AbhELLwZ (ORCPT ); Wed, 12 May 2021 07:52:25 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 45D1B61353; Wed, 12 May 2021 11:51:17 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1620820277; bh=NmRdc9G7JJFHGfkGyc+LaMf36FTOlxulYuSeArk85go=; h=From:To:Cc:Subject:Date:From; b=JYIBsc2N2gJ1wUihhjHXfwwG8zZHwoI9PXbiNLIu75YrNBP9bNmT4SpwMSXsgBVo8 cFmYKz0cXt26BGxcR0PDjK0vRU8Tdgpu5ms+qM2Ogj+i2LJnn+DVmlwUkGSc2zFc0L Q4itev67yHXmhYz96ObZrbmzh4Eyk90c4oUccruWT19cazA00ElmOIEnLV0lAEArU3 p0rZHayfCbWOWfRR8rCkTvmfVzk11SgQ2dPvh76WttUf8gu1Fo4EEKhThfkmonRaJ6 Mw9ust8x4Q70aGu73UtIWzCLyyldxrTVaqgNdJ24uM3R/OZRTq1u90LBUfdqEYcPyQ 66LP3DMfeNYFg== From: Mark Brown To: Willy Tarreau Cc: linux-kernel@vger.kernel.org, Mark Brown Subject: [PATCH v2] tools/nolibc: Implement msleep() Date: Wed, 12 May 2021 12:47:28 +0100 Message-Id: <20210512114728.19015-1-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=goBe/H9D7gHdYDF1GUG3qnE1yXlI/9UHpsYgIuToVI8=; g=e63813b3d0cd70e8afa36d09389e65a5b1a1a1ec X-Patch-Sig: m=pgp; i=broonie@kernel.org; s=0xC3F436CA30F5D8EB; b=iQEzBAABCgAdFiEEreZoqmdXGLWf4p/qJNaLcl1Uh9AFAmCbv/UACgkQJNaLcl1Uh9Dqowf9E16 qjowmtU0rxTE+BOWEJw8Z8f7PM+10vRWw2SjtvvGdKZ065pLYlqLNuvqBjPlIZyUxCk6E0nROrTEE hCX64nrkOCTzxZvz7faioL8p4VQeKMcgJh9kwO4xSUQzRECEw4FHGyv5f4/rWq50mT9tpP9ZaPR7q ed9CkcXUpaGT1wpLTqYwzNIWRLRJWYIZF6QrZRTBtDW7fwG2oCGBWG7KZbMDmQsKGKw3fxPZ0H1Vd K+naIj84fdFH6OVPOClIxOwrKq9Wob1MHh5wfQ8LbQGoDHnJX+9OD3ke7f9b5o/XqQeD6IERPrL2p cKxgBkcnbiBTJHvuTLgaT2Bvl+OfKsw== 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 --- 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 | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/tools/include/nolibc/nolibc.h b/tools/include/nolibc/nolibc.h index 8b7a9830dd22..01400d36ce99 100644 --- a/tools/include/nolibc/nolibc.h +++ b/tools/include/nolibc/nolibc.h @@ -2243,6 +2243,17 @@ 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 + !!my_timeval.tv_usec; + else + return 0; +} + static __attribute__((unused)) int stat(const char *path, struct stat *buf) { -- 2.20.1