diff options
Diffstat (limited to 'lockfile.h')
| -rw-r--r-- | lockfile.h | 43 |
1 files changed, 28 insertions, 15 deletions
diff --git a/lockfile.h b/lockfile.h index 1bb9926497..e7233f28de 100644 --- a/lockfile.h +++ b/lockfile.h @@ -119,6 +119,7 @@ struct lock_file { struct tempfile *tempfile; + struct tempfile *pid_tempfile; }; #define LOCK_INIT { 0 } @@ -127,6 +128,22 @@ struct lock_file { #define LOCK_SUFFIX ".lock" #define LOCK_SUFFIX_LEN 5 +/* + * PID file naming: for a lock file "foo.lock", the PID file is "foo~pid.lock". + * The tilde is forbidden in refnames and allowed in Windows filenames, avoiding + * namespace collisions (e.g., refs "foo" and "foo~pid" cannot both exist). + */ +#define LOCK_PID_INFIX "~pid" +#define LOCK_PID_INFIX_LEN 4 + +/* Maximum length for PID file content */ +#define LOCK_PID_MAXLEN 32 + +/* + * Whether to create PID files alongside lock files. + * Configured via core.lockfilePid (boolean). + */ +extern int lockfile_pid_enabled; /* * Flags @@ -169,12 +186,12 @@ struct lock_file { * handling, and mode are described above. */ int hold_lock_file_for_update_timeout_mode( - struct lock_file *lk, const char *path, - int flags, long timeout_ms, int mode); + struct lock_file *lk, const char *path, + int flags, long timeout_ms, int mode); static inline int hold_lock_file_for_update_timeout( - struct lock_file *lk, const char *path, - int flags, long timeout_ms) + struct lock_file *lk, const char *path, + int flags, long timeout_ms) { return hold_lock_file_for_update_timeout_mode(lk, path, flags, timeout_ms, 0666); @@ -186,15 +203,14 @@ static inline int hold_lock_file_for_update_timeout( * argument and error handling are described above. */ static inline int hold_lock_file_for_update( - struct lock_file *lk, const char *path, - int flags) + struct lock_file *lk, const char *path, int flags) { return hold_lock_file_for_update_timeout(lk, path, flags, 0); } static inline int hold_lock_file_for_update_mode( - struct lock_file *lk, const char *path, - int flags, int mode) + struct lock_file *lk, const char *path, + int flags, int mode) { return hold_lock_file_for_update_timeout_mode(lk, path, flags, 0, mode); } @@ -319,13 +335,10 @@ static inline int commit_lock_file_to(struct lock_file *lk, const char *path) /* * Roll back `lk`: close the file descriptor and/or file pointer and - * remove the lockfile. It is a NOOP to call `rollback_lock_file()` - * for a `lock_file` object that has already been committed or rolled - * back. No error will be returned in this case. + * remove the lockfile and any associated PID file. It is a NOOP to + * call `rollback_lock_file()` for a `lock_file` object that has already + * been committed or rolled back. No error will be returned in this case. */ -static inline int rollback_lock_file(struct lock_file *lk) -{ - return delete_tempfile(&lk->tempfile); -} +int rollback_lock_file(struct lock_file *lk); #endif /* LOCKFILE_H */ |