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- #ifndef __TILE_PVT_H__
- #define __TILE_PVT_H__
-
- #ifdef USE_PTHREADS
- #include <pthread.h>
- #endif
-
-
- #include <sys/types.h>
- #include <glib.h>
-
- #include "config.h"
- #include "tile.h"
-
- typedef struct _TileLink TileLink;
-
- struct _TileLink
- {
- TileLink *next;
- int tile_num; /* the number of this tile within the drawable */
- void *tm; /* A pointer to the tile manager for this tile.
- * We need this in order to call the tile managers
- * validate proc whenever the tile is referenced yet
- * invalid.
- */
- };
-
- struct _Tile
- {
- short ref_count; /* reference count. when the reference count is
- * non-zero then the "data" for this tile must
- * be valid. when the reference count for a tile
- * is 0 then the "data" for this tile must be
- * NULL.
- */
- short write_count; /* write count: number of references that are
- for write access */
- short share_count; /* share count: number of tile managers that
- hold this tile */
- guint dirty : 1; /* is the tile dirty? has it been modified? */
- guint valid : 1; /* is the tile valid? */
-
- unsigned char bpp; /* the bytes per pixel (1, 2, 3 or 4) */
- unsigned short ewidth; /* the effective width of the tile */
- unsigned short eheight; /* the effective height of the tile */
- /* a tile's effective width and height may be smaller
- * (but not larger) than TILE_WIDTH and TILE_HEIGHT.
- * this is to handle edge tiles of a drawable.
- */
-
- TileRowHint *rowhint; /* An array of hints for rendering purposes */
-
- guchar *data; /* the data for the tile. this may be NULL in which
- * case the tile data is on disk.
- */
-
- int swap_num; /* the index into the file table of the file to be used
- * for swapping. swap_num 1 is always the global swap file.
- */
- off_t swap_offset; /* the offset within the swap file of the tile data.
- * if the tile data is in memory this will be set to -1.
- */
- TileLink *tlink;
-
- Tile *next;
- Tile *prev; /* List pointers for the tile cache lists */
- void *listhead; /* Pointer to the head of the list this tile is on */
- #ifdef USE_PTHREADS
- pthread_mutex_t mutex;
- #endif
- };
-
- #ifdef USE_PTHREADS
- #define TILE_MUTEX_LOCK(tile) pthread_mutex_lock(&((tile)->mutex))
- #define TILE_MUTEX_UNLOCK(tile) pthread_mutex_unlock(&((tile)->mutex))
- #else
- #define TILE_MUTEX_LOCK(tile) /* nothing */
- #define TILE_MUTEX_UNLOCK(tile) /* nothing */
- #endif
-
-
- #endif /* __TILE_PVT_H__ */
-