/*
  Copyright (c) 2009-2010 Gluster, Inc. <http://www.gluster.com>
  This file is part of GlusterFS.

  GlusterFS is free software; you can redistribute it and/or modify
  it under the terms of the GNU Affero General Public License as published
  by the Free Software Foundation; either version 3 of the License,
  or (at your option) any later version.

  GlusterFS is distributed in the hope that it will be useful, but
  WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  Affero General Public License for more details.

  You should have received a copy of the GNU Affero General Public License
  along with this program.  If not, see
  <http://www.gnu.org/licenses/>.
*/

#ifndef __QUICK_READ_H
#define __QUICK_READ_H

#ifndef _CONFIG_H
#define _CONFIG_H
#include "config.h"
#endif

#include "glusterfs.h"
#include "logging.h"
#include "dict.h"
#include "xlator.h"
#include "list.h"
#include "compat.h"
#include "compat-errno.h"
#include "common-utils.h"
#include "call-stub.h"
#include "defaults.h"
#include <libgen.h>
#include <sys/time.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <fnmatch.h>
#include "quick-read-mem-types.h"

struct qr_fd_ctx {
        char              opened;
        char              disabled;
        char              open_in_transit;
        char             *path;
        int               flags;
        int               wbflags;
        struct list_head  waiting_ops;
        gf_lock_t         lock;
};
typedef struct qr_fd_ctx qr_fd_ctx_t;

struct qr_local {
        char         is_open;
        char        *path;
        char         just_validated;
        fd_t        *fd;
        int          open_flags;
        int32_t      op_ret;
        int32_t      op_errno;
        call_stub_t *stub;
};
typedef struct qr_local qr_local_t;

struct qr_inode {
        dict_t           *xattr;
        inode_t          *inode;
        int               priority;
        struct iatt       stbuf;
        struct timeval    tv;
        struct list_head  lru;
};
typedef struct qr_inode qr_inode_t;

struct qr_priority {
        char             *pattern;
        int32_t           priority;
        struct list_head  list;
};
typedef struct qr_priority qr_priority_t;

struct qr_conf {
        uint64_t         max_file_size;
        int32_t          cache_timeout;
        uint64_t         cache_size;
        int              max_pri;
        struct list_head priority_list;
};
typedef struct qr_conf qr_conf_t;

struct qr_inode_table {
        uint64_t          cache_used;
        struct list_head *lru;
        gf_lock_t         lock;
};
typedef struct qr_inode_table qr_inode_table_t;

struct qr_private {
        qr_conf_t         conf;
        qr_inode_table_t  table;
};
typedef struct qr_private qr_private_t;

void qr_local_free (qr_local_t *local);

#define QR_STACK_UNWIND(op, frame, params ...) do {             \
                qr_local_t *__local = frame->local;             \
                frame->local = NULL;                            \
                STACK_UNWIND_STRICT (op, frame, params);        \
                qr_local_free (__local);                        \
        } while (0)

#endif /* #ifndef __QUICK_READ_H */