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/*-
* Copyright (c) 2014-2020 MongoDB, Inc.
* Copyright (c) 2008-2014 WiredTiger, Inc.
* All rights reserved.
*
* See the file LICENSE for redistribution information.
*/
/*
* WT_TIERED_MANAGER --
* A structure that holds resources used to manage any tiered storage
* for the whole database.
*/
struct __wt_tiered_manager {
uint64_t wait_usecs; /* Wait time period */
uint32_t workers; /* Current number of workers */
uint32_t workers_max;
uint32_t workers_min;
#define WT_TIERED_MAX_WORKERS 20
#define WT_TIERED_MIN_WORKERS 1
/* AUTOMATIC FLAG VALUE GENERATION START */
#define WT_TIERED_MANAGER_SHUTDOWN 0x1u /* Manager has shut down */
/* AUTOMATIC FLAG VALUE GENERATION STOP */
uint32_t flags;
};
/*
* WT_CURSOR_TIERED --
* An tiered cursor.
*/
struct __wt_cursor_tiered {
WT_CURSOR iface;
WT_TIERED *tiered;
WT_CURSOR **cursors;
WT_CURSOR *current; /* The current cursor for iteration */
WT_CURSOR *primary; /* The current primary */
/* AUTOMATIC FLAG VALUE GENERATION START */
#define WT_CURTIERED_ACTIVE 0x1u /* Incremented the session count */
#define WT_CURTIERED_ITERATE_NEXT 0x2u /* Forward iteration */
#define WT_CURTIERED_ITERATE_PREV 0x4u /* Backward iteration */
/* AUTOMATIC FLAG VALUE GENERATION STOP */
uint32_t flags;
};
/*
* WT_TIERED --
* Handle for a tiered data source.
*/
struct __wt_tiered {
WT_DATA_HANDLE iface;
const char *name, *config, *filename;
const char *key_format, *value_format;
WT_DATA_HANDLE **tiers;
u_int ntiers;
WT_COLLATOR *collator; /* TODO: handle custom collation */
};
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