diff options
Diffstat (limited to 'libglusterfs/src/syncop.h')
| -rw-r--r-- | libglusterfs/src/syncop.h | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/libglusterfs/src/syncop.h b/libglusterfs/src/syncop.h index aec07f360..ee8a3277d 100644 --- a/libglusterfs/src/syncop.h +++ b/libglusterfs/src/syncop.h @@ -69,6 +69,8 @@ struct synctask { pthread_mutex_t mutex; /* for synchronous spawning of synctask */ pthread_cond_t cond; int done; + + struct list_head waitq; /* can wait only "once" at a time */ }; @@ -96,6 +98,15 @@ struct syncenv { }; +struct synclock { + pthread_mutex_t guard; /* guard the remaining members, pair @cond */ + pthread_cond_t cond; /* waiting non-synctasks */ + struct list_head waitq; /* waiting synctasks */ + gf_boolean_t lock; /* _gf_true or _gf_false, lock status */ + struct synctask *owner; /* NULL if current owner is not a synctask */ +}; +typedef struct synclock synclock_t; + struct syncargs { int op_ret; int op_errno; @@ -220,6 +231,13 @@ void synctask_waitfor (struct synctask *task, int count); int synctask_setid (struct synctask *task, uid_t uid, gid_t gid); #define SYNCTASK_SETID(uid, gid) synctask_setid (synctask_get(), uid, gid); + +int synclock_init (synclock_t *lock); +int synclock_destory (synclock_t *lock); +int synclock_lock (synclock_t *lock); +int synclock_trylock (synclock_t *lock); +int synclock_unlock (synclock_t *lock); + int syncop_lookup (xlator_t *subvol, loc_t *loc, dict_t *xattr_req, /* out */ struct iatt *iatt, dict_t **xattr_rsp, struct iatt *parent); |