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Diffstat (limited to 'libglusterfs/src/fd-lk.h')
| -rw-r--r-- | libglusterfs/src/fd-lk.h | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/libglusterfs/src/fd-lk.h b/libglusterfs/src/fd-lk.h new file mode 100644 index 000000000..1d2ff794c --- /dev/null +++ b/libglusterfs/src/fd-lk.h @@ -0,0 +1,70 @@ +/* + Copyright (c) 2008-2012 Red Hat, Inc. <http://www.redhat.com> + This file is part of GlusterFS. + + This file is licensed to you under your choice of the GNU Lesser + General Public License, version 3 or any later version (LGPLv3 or + later), or the GNU General Public License, version 2 (GPLv2), in all + cases as published by the Free Software Foundation. +*/ + +#ifndef _FD_LK_H +#define _FD_LK_H + +#include "fd.h" +#include "locking.h" +#include "list.h" +#include "logging.h" +#include "mem-pool.h" +#include "mem-types.h" +#include "glusterfs.h" +#include "common-utils.h" + +#define get_lk_type(type) \ + type == F_UNLCK ? "F_UNLCK" : (type == F_RDLCK ? "F_RDLCK" : "F_WRLCK") + +#define get_lk_cmd(cmd) \ + cmd == F_SETLKW ? "F_SETLKW" : (cmd == F_SETLK ? "F_SETLK" : "F_GETLK") + +struct _fd; + +struct fd_lk_ctx { + struct list_head lk_list; + int ref; + gf_lock_t lock; +}; +typedef struct fd_lk_ctx fd_lk_ctx_t; + +struct fd_lk_ctx_node { + int32_t cmd; + struct gf_flock user_flock; + off_t fl_start; + off_t fl_end; + short fl_type; + struct list_head next; +}; +typedef struct fd_lk_ctx_node fd_lk_ctx_node_t; + +fd_lk_ctx_t * +_fd_lk_ctx_ref (fd_lk_ctx_t *lk_ctx); + +fd_lk_ctx_t * +fd_lk_ctx_ref (fd_lk_ctx_t *lk_ctx); + +fd_lk_ctx_t * +fd_lk_ctx_try_ref (fd_lk_ctx_t *lk_ctx); + +fd_lk_ctx_t * +fd_lk_ctx_create (); + +int +fd_lk_insert_and_merge (struct _fd *lk_ctx, int32_t cmd, + struct gf_flock *flock); + +int +fd_lk_ctx_unref (fd_lk_ctx_t *lk_ctx); + +gf_boolean_t +fd_lk_ctx_empty (fd_lk_ctx_t *lk_ctx); + +#endif /* _FD_LK_H */ |