Mercurial > trustbridge
comparison common/linuxlockfile.h @ 783:e65e2a0be7c8
Merged
| author | Sascha Wilde <wilde@intevation.de> |
|---|---|
| date | Mon, 14 Jul 2014 12:48:46 +0200 |
| parents | 20ca94680003 |
| children | 78798d3af8f0 |
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| 781:60d3f59f0803 | 783:e65e2a0be7c8 |
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| 1 /** | |
| 2 * @file linuxlockfile.h | |
| 3 * @brief Linux specific functions for lock file handling. | |
| 4 * @details Functions to handle procsss specific lock files, these are | |
| 5 * only used on GNU Linux as on windows different mechanisms are | |
| 6 * utilized to ensure only a single instance runs at a time. | |
| 7 */ | |
| 8 | |
| 9 #ifndef LINUXLOCKFILE_H | |
| 10 #define LINUXLOCKFILE_H | |
| 11 | |
| 12 #ifdef __cplusplus | |
| 13 extern "C" { | |
| 14 #endif | |
| 15 | |
| 16 /** | |
| 17 * @brief create a lockfile | |
| 18 * @details create and lock a lockfile containing the pid of the | |
| 19 * current process. fcntl is used for locking, to work in most cases | |
| 20 * (e.g. NFS). | |
| 21 * @param[in] path to the lockfile | |
| 22 * @returns the file descriptor of the lockfile or -1 on error | |
| 23 */ | |
| 24 int open_lockfile(char *path); | |
| 25 | |
| 26 /** | |
| 27 * @brief close a lockfile | |
| 28 * @details unlock and close a lockfile for the given file descriptor. | |
| 29 * @param[in] path to the lockfile | |
| 30 * @returns the file descriptor of the lockfile or -1 on error | |
| 31 */ | |
| 32 void close_lockfile(int fd); | |
| 33 | |
| 34 #ifdef __cplusplus | |
| 35 } | |
| 36 #endif | |
| 37 | |
| 38 #endif |