From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from [140.186.70.92] (port=49050 helo=eggs.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1P4I9H-0005mc-EY for qemu-devel@nongnu.org; Fri, 08 Oct 2010 14:58:35 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1P4I9A-00024H-OS for qemu-devel@nongnu.org; Fri, 08 Oct 2010 14:58:26 -0400 Received: from mtagate5.de.ibm.com ([195.212.17.165]:55268) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1P4I9A-00023f-Gb for qemu-devel@nongnu.org; Fri, 08 Oct 2010 14:58:24 -0400 Received: from d12nrmr1607.megacenter.de.ibm.com (d12nrmr1607.megacenter.de.ibm.com [9.149.167.49]) by mtagate5.de.ibm.com (8.13.1/8.13.1) with ESMTP id o98Fmjt7030612 for ; Fri, 8 Oct 2010 15:48:45 GMT Received: from d12av02.megacenter.de.ibm.com (d12av02.megacenter.de.ibm.com [9.149.165.228]) by d12nrmr1607.megacenter.de.ibm.com (8.13.8/8.13.8/NCO v10.0) with ESMTP id o98Fmipv3915820 for ; Fri, 8 Oct 2010 17:48:45 +0200 Received: from d12av02.megacenter.de.ibm.com (loopback [127.0.0.1]) by d12av02.megacenter.de.ibm.com (8.12.11.20060308/8.13.3) with ESMTP id o98Fmikd019649 for ; Fri, 8 Oct 2010 17:48:44 +0200 From: Stefan Hajnoczi Date: Fri, 8 Oct 2010 16:48:29 +0100 Message-Id: <1286552914-27014-3-git-send-email-stefanha@linux.vnet.ibm.com> In-Reply-To: <1286552914-27014-1-git-send-email-stefanha@linux.vnet.ibm.com> References: <1286552914-27014-1-git-send-email-stefanha@linux.vnet.ibm.com> Subject: [Qemu-devel] [PATCH v2 2/7] cutils: Add bytes_to_str() to format byte values List-Id: qemu-devel.nongnu.org List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: Kevin Wolf , Anthony Liguori , Christoph Hellwig , Stefan Hajnoczi , Avi Kivity 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 6c32198..5041203 100644 --- a/cutils.c +++ b/cutils.c @@ -301,3 +301,18 @@ int get_bits_from_size(size_t size) return __builtin_ctzl(size); #endif } + +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 e0ca398..80ae834 100644 --- a/qemu-common.h +++ b/qemu-common.h @@ -154,6 +154,7 @@ 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); -- 1.7.1