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annotate common/linuxlockfile.h @ 840:c9a31544aaab

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(issue50) Write startup file with display variable
author Andre Heinecke <andre.heinecke@intevation.de>
date Tue, 29 Jul 2014 13:15:32 +0200
parents 20ca94680003
children 78798d3af8f0
rev   line source
782
20ca94680003 Implemented detection of running instance on linux using a lock file.
Sascha Wilde <wilde@intevation.de>
parents:
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1 /**
20ca94680003 Implemented detection of running instance on linux using a lock file.
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2 * @file linuxlockfile.h
20ca94680003 Implemented detection of running instance on linux using a lock file.
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3 * @brief Linux specific functions for lock file handling.
20ca94680003 Implemented detection of running instance on linux using a lock file.
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4 * @details Functions to handle procsss specific lock files, these are
20ca94680003 Implemented detection of running instance on linux using a lock file.
Sascha Wilde <wilde@intevation.de>
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5 * only used on GNU Linux as on windows different mechanisms are
20ca94680003 Implemented detection of running instance on linux using a lock file.
Sascha Wilde <wilde@intevation.de>
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6 * utilized to ensure only a single instance runs at a time.
20ca94680003 Implemented detection of running instance on linux using a lock file.
Sascha Wilde <wilde@intevation.de>
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7 */
20ca94680003 Implemented detection of running instance on linux using a lock file.
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8
20ca94680003 Implemented detection of running instance on linux using a lock file.
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9 #ifndef LINUXLOCKFILE_H
20ca94680003 Implemented detection of running instance on linux using a lock file.
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10 #define LINUXLOCKFILE_H
20ca94680003 Implemented detection of running instance on linux using a lock file.
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11
20ca94680003 Implemented detection of running instance on linux using a lock file.
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12 #ifdef __cplusplus
20ca94680003 Implemented detection of running instance on linux using a lock file.
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13 extern "C" {
20ca94680003 Implemented detection of running instance on linux using a lock file.
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14 #endif
20ca94680003 Implemented detection of running instance on linux using a lock file.
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15
20ca94680003 Implemented detection of running instance on linux using a lock file.
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16 /**
20ca94680003 Implemented detection of running instance on linux using a lock file.
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17 * @brief create a lockfile
20ca94680003 Implemented detection of running instance on linux using a lock file.
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18 * @details create and lock a lockfile containing the pid of the
20ca94680003 Implemented detection of running instance on linux using a lock file.
Sascha Wilde <wilde@intevation.de>
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19 * current process. fcntl is used for locking, to work in most cases
20ca94680003 Implemented detection of running instance on linux using a lock file.
Sascha Wilde <wilde@intevation.de>
parents:
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20 * (e.g. NFS).
20ca94680003 Implemented detection of running instance on linux using a lock file.
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21 * @param[in] path to the lockfile
20ca94680003 Implemented detection of running instance on linux using a lock file.
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22 * @returns the file descriptor of the lockfile or -1 on error
20ca94680003 Implemented detection of running instance on linux using a lock file.
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23 */
20ca94680003 Implemented detection of running instance on linux using a lock file.
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24 int open_lockfile(char *path);
20ca94680003 Implemented detection of running instance on linux using a lock file.
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25
20ca94680003 Implemented detection of running instance on linux using a lock file.
Sascha Wilde <wilde@intevation.de>
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26 /**
20ca94680003 Implemented detection of running instance on linux using a lock file.
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27 * @brief close a lockfile
20ca94680003 Implemented detection of running instance on linux using a lock file.
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28 * @details unlock and close a lockfile for the given file descriptor.
20ca94680003 Implemented detection of running instance on linux using a lock file.
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29 * @param[in] path to the lockfile
20ca94680003 Implemented detection of running instance on linux using a lock file.
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30 * @returns the file descriptor of the lockfile or -1 on error
20ca94680003 Implemented detection of running instance on linux using a lock file.
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31 */
20ca94680003 Implemented detection of running instance on linux using a lock file.
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32 void close_lockfile(int fd);
20ca94680003 Implemented detection of running instance on linux using a lock file.
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33
20ca94680003 Implemented detection of running instance on linux using a lock file.
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34 #ifdef __cplusplus
20ca94680003 Implemented detection of running instance on linux using a lock file.
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35 }
20ca94680003 Implemented detection of running instance on linux using a lock file.
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36 #endif
20ca94680003 Implemented detection of running instance on linux using a lock file.
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37
20ca94680003 Implemented detection of running instance on linux using a lock file.
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38 #endif
http://wald.intevation.org/projects/trustbridge/