From patchwork Thu Sep 23 15:41:49 2010 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stefan Hajnoczi X-Patchwork-Id: 65568 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from lists.gnu.org (lists.gnu.org [199.232.76.165]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) by ozlabs.org (Postfix) with ESMTPS id 98463B70F3 for ; Fri, 24 Sep 2010 04:46:22 +1000 (EST) Received: from localhost ([127.0.0.1]:41262 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1OyqoA-0003By-Pl for incoming@patchwork.ozlabs.org; Thu, 23 Sep 2010 14:46:14 -0400 Received: from [140.186.70.92] (port=54941 helo=eggs.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1Oyqn2-0003AZ-Oi for qemu-devel@nongnu.org; Thu, 23 Sep 2010 14:45:05 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.69) (envelope-from ) id 1Oyqn1-0004ke-Eg for qemu-devel@nongnu.org; Thu, 23 Sep 2010 14:45:04 -0400 Received: from mtagate1.de.ibm.com ([195.212.17.161]:39987) by eggs.gnu.org with esmtp (Exim 4.69) (envelope-from ) id 1Oyqn1-0004kW-5o for qemu-devel@nongnu.org; Thu, 23 Sep 2010 14:45:03 -0400 Received: from d12nrmr1607.megacenter.de.ibm.com (d12nrmr1607.megacenter.de.ibm.com [9.149.167.49]) by mtagate1.de.ibm.com (8.13.1/8.13.1) with ESMTP id o8NFgAle010252 for ; Thu, 23 Sep 2010 15:42:10 GMT Received: from d12av04.megacenter.de.ibm.com (d12av04.megacenter.de.ibm.com [9.149.165.229]) by d12nrmr1607.megacenter.de.ibm.com (8.13.8/8.13.8/NCO v10.0) with ESMTP id o8NFgAjT4018356 for ; Thu, 23 Sep 2010 17:42:10 +0200 Received: from d12av04.megacenter.de.ibm.com (loopback [127.0.0.1]) by d12av04.megacenter.de.ibm.com (8.12.11.20060308/8.13.3) with ESMTP id o8NFg9jK026498 for ; Thu, 23 Sep 2010 17:42:10 +0200 Received: from stefan-thinkpad.manchester-maybrook.uk.ibm.com (dyn-9-174-219-27.manchester-maybrook.uk.ibm.com [9.174.219.27]) by d12av04.megacenter.de.ibm.com (8.12.11.20060308/8.12.11) with ESMTP id o8NFg8k9026447; Thu, 23 Sep 2010 17:42:09 +0200 From: Stefan Hajnoczi To: Date: Thu, 23 Sep 2010 16:41:49 +0100 Message-Id: <1285256514-21138-3-git-send-email-stefanha@linux.vnet.ibm.com> X-Mailer: git-send-email 1.7.1 In-Reply-To: <1285256514-21138-1-git-send-email-stefanha@linux.vnet.ibm.com> References: <1285256514-21138-1-git-send-email-stefanha@linux.vnet.ibm.com> X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.6, seldom 2.4 (older, 4) Cc: Kevin Wolf , Anthony Liguori , Christoph Hellwig , Stefan Hajnoczi , Avi Kivity Subject: [Qemu-devel] [PATCH 2/7] cutils: Add bytes_to_str() to format byte values X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: qemu-devel.nongnu.org List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org From: Anthony Liguori This common function converts byte counts to human-readable strings with proper units. Signed-off-by: Anthony Liguori Signed-off-by: Stefan Hajnoczi --- cutils.c | 15 +++++++++++++++ qemu-common.h | 1 + 2 files changed, 16 insertions(+), 0 deletions(-) diff --git a/cutils.c b/cutils.c index f9812d5..76f7501 100644 --- a/cutils.c +++ b/cutils.c @@ -277,3 +277,18 @@ int get_bits_from_size(size_t size) return res; } + +void bytes_to_str(char *buffer, size_t buffer_len, uint64_t size) +{ + if (size < (1ULL << 10)) { + snprintf(buffer, buffer_len, "%" PRIu64 " byte(s)", size); + } else if (size < (1ULL << 20)) { + snprintf(buffer, buffer_len, "%" PRIu64 " KB(s)", size >> 10); + } else if (size < (1ULL << 30)) { + snprintf(buffer, buffer_len, "%" PRIu64 " MB(s)", size >> 20); + } else if (size < (1ULL << 40)) { + snprintf(buffer, buffer_len, "%" PRIu64 " GB(s)", size >> 30); + } else { + snprintf(buffer, buffer_len, "%" PRIu64 " TB(s)", size >> 40); + } +} diff --git a/qemu-common.h b/qemu-common.h index 3170c64..e0900b8 100644 --- a/qemu-common.h +++ b/qemu-common.h @@ -138,6 +138,7 @@ int qemu_fls(int i); int qemu_fdatasync(int fd); int fcntl_setfl(int fd, int flag); int get_bits_from_size(size_t size); +void bytes_to_str(char *buffer, size_t buffer_len, uint64_t size); /* path.c */ void init_paths(const char *prefix);