64 lines
2.1 KiB
C
64 lines
2.1 KiB
C
/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*-
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*
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* Author: Michael Zucchi <notzed@ximian.com>
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*
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* Copyright (C) 1999 Ximian (www.ximian.com/).
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of version 2 of the GNU General Public
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* License as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
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* USA
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*/
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#ifndef _CAMEL_LOCK_H
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#define _CAMEL_LOCK_H
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#ifdef __cplusplus
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extern "C" {
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#pragma }
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#endif /* __cplusplus }*/
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#include <camel/camel-exception.h>
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/* for .lock locking, retry, delay and stale counts */
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#define CAMEL_LOCK_DOT_RETRY (5) /* number of times to retry lock */
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#define CAMEL_LOCK_DOT_DELAY (2) /* delay between locking retries */
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#define CAMEL_LOCK_DOT_STALE (60) /* seconds before a lock becomes stale */
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/* for locking folders, retry/interretry delay */
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#define CAMEL_LOCK_RETRY (5) /* number of times to retry lock */
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#define CAMEL_LOCK_DELAY (2) /* delay between locking retries */
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typedef enum {
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CAMEL_LOCK_READ,
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CAMEL_LOCK_WRITE,
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} CamelLockType;
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/* specific locking strategies */
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int camel_lock_dot(const char *path, CamelException *ex);
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int camel_lock_fcntl(int fd, CamelLockType type, CamelException *ex);
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int camel_lock_flock(int fd, CamelLockType type, CamelException *ex);
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void camel_unlock_dot(const char *path);
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void camel_unlock_fcntl(int fd);
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void camel_unlock_flock(int fd);
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/* lock a folder in a standard way */
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int camel_lock_folder(const char *path, int fd, CamelLockType type, CamelException *ex);
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void camel_unlock_folder(const char *path, int fd);
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#ifdef __cplusplus
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}
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#endif /* __cplusplus */
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#endif /* !_CAMEL_LOCK_H */
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