From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from nm11.bullet.mail.ird.yahoo.com ([77.238.189.64]:42628 "HELO nm11.bullet.mail.ird.yahoo.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S1751191Ab3CJMQ3 (ORCPT ); Sun, 10 Mar 2013 08:16:29 -0400 From: Goffredo Baroncelli To: linux-btrfs@vger.kernel.org Cc: Hugo Mills , Michael =?utf-8?q?Kj=C3=B6rling?= , Martin Steigerwald , cwillu , Chris Murphy , David Sterba , Zach Brown , Goffredo Baroncelli Subject: [PATCH 1/8] Add some helpers to manage the strings allocation/deallocation. Date: Sun, 10 Mar 2013 13:17:32 +0100 Message-Id: <1362917859-18824-2-git-send-email-goffredo.baroncelli@yahoo.com> In-Reply-To: <1362917859-18824-1-git-send-email-goffredo.baroncelli@yahoo.com> References: <1362917859-18824-1-git-send-email-goffredo.baroncelli@yahoo.com> Sender: linux-btrfs-owner@vger.kernel.org List-ID: From: Goffredo Baroncelli This patch adds some helpers to manage the strings allocation and deallocation. The function string_list_add(char *) adds the passed string to a list; the function string_list_free() frees all the strings together. Signed-off-by: Goffredo Baroncelli --- Makefile | 3 ++- string_list.c | 65 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++ string_list.h | 23 ++++++++++++++++++++ 3 files changed, 90 insertions(+), 1 deletion(-) create mode 100644 string_list.c create mode 100644 string_list.h diff --git a/Makefile b/Makefile index 596bf93..0d6c43a 100644 --- a/Makefile +++ b/Makefile @@ -5,7 +5,8 @@ objects = ctree.o disk-io.o radix-tree.o extent-tree.o print-tree.o \ root-tree.o dir-item.o file-item.o inode-item.o \ inode-map.o crc32c.o rbtree.o extent-cache.o extent_io.o \ volumes.o utils.o btrfs-list.o btrfslabel.o repair.o \ - send-stream.o send-utils.o qgroup.o raid6.o + send-stream.o send-utils.o qgroup.o raid6.o \ + string_list.o cmds_objects = cmds-subvolume.o cmds-filesystem.o cmds-device.o cmds-scrub.o \ cmds-inspect.o cmds-balance.o cmds-send.o cmds-receive.o \ cmds-quota.o cmds-qgroup.o cmds-replace.o diff --git a/string_list.c b/string_list.c new file mode 100644 index 0000000..f840048 --- /dev/null +++ b/string_list.c @@ -0,0 +1,65 @@ +/* + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public + * License v2 as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public + * License along with this program; if not, write to the + * Free Software Foundation, Inc., 59 Temple Place - Suite 330, + * Boston, MA 021110-1307, USA. + */ + +#include +#include +#include +#include + +#include "string_list.h" + +/* To store the strings */ +static void **strings_to_free; +static int count_string_to_free; + +/* + * Add a string to the dynamic allocated string list + */ +char *string_list_add(char *s) +{ + int size; + + size = sizeof(void *) * ++count_string_to_free; + strings_to_free = realloc(strings_to_free, size); + + /* if we don't have enough memory, we have more serius + problem than that a wrong handling of not enough memory */ + if (!strings_to_free) { + fprintf(stderr, "add_string_to_free(): Not enough memory\n"); + count_string_to_free = 0; + return NULL; + } + + strings_to_free[count_string_to_free-1] = s; + return s; +} + +/* + * Free the dynamic allocated strings list + */ +void string_list_free() +{ + int i; + for (i = 0 ; i < count_string_to_free ; i++) + free(strings_to_free[i]); + + free(strings_to_free); + + strings_to_free = 0; + count_string_to_free = 0; +} + + diff --git a/string_list.h b/string_list.h new file mode 100644 index 0000000..fdc027d --- /dev/null +++ b/string_list.h @@ -0,0 +1,23 @@ +/* + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public + * License v2 as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public + * License along with this program; if not, write to the + * Free Software Foundation, Inc., 59 Temple Place - Suite 330, + * Boston, MA 021110-1307, USA. + */ + +#ifndef STRING_LIST_H +#define STRING_LIST_H + +char *string_list_add(char *s); +void string_list_free(); + +#endif -- 1.7.10.4