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22b8c94feb
* app/tile.c
* app/tile.h
* app/tile_manager.c
* app/tile_swap.c:
Allocate Tile's array of TileRowHints dynamically. Make type
of TileRowHint explicit since it's fairly space-critical.
Can save several hundred K of memory with this and struct
changes.
Added warnings for old basically-untested-or-insane
paths through the tile referencing code.
* app/tile_pvt.h: Shrink down and rearrange fields of Tile
struct to save some space with gcc's padding for most people.
* app/paint_funcs.c: Use tile_sanitize_rowhints() to ensure
that rowhints have been allocated before use.
* app/channel_ops.c
* app/gdisplay.c
* app/pixel_region.c: Cosmetic, sanity or unfinished debug
changes (the latter commented out) for fun and reference.
83 lines
2.5 KiB
C
83 lines
2.5 KiB
C
#ifndef __TILE_PVT_H__
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#define __TILE_PVT_H__
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#ifdef USE_PTHREADS
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#include <pthread.h>
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#endif
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#include <sys/types.h>
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#include <glib.h>
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#include "config.h"
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#include "tile.h"
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typedef struct _TileLink TileLink;
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struct _TileLink
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{
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TileLink *next;
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int tile_num; /* the number of this tile within the drawable */
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void *tm; /* A pointer to the tile manager for this tile.
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* We need this in order to call the tile managers
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* validate proc whenever the tile is referenced yet
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* invalid.
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*/
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};
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struct _Tile
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{
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short ref_count; /* reference count. when the reference count is
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* non-zero then the "data" for this tile must
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* be valid. when the reference count for a tile
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* is 0 then the "data" for this tile must be
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* NULL.
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*/
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short write_count; /* write count: number of references that are
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for write access */
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short share_count; /* share count: number of tile managers that
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hold this tile */
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guint dirty : 1; /* is the tile dirty? has it been modified? */
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guint valid : 1; /* is the tile valid? */
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unsigned char bpp; /* the bytes per pixel (1, 2, 3 or 4) */
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unsigned short ewidth; /* the effective width of the tile */
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unsigned short eheight; /* the effective height of the tile */
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/* a tile's effective width and height may be smaller
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* (but not larger) than TILE_WIDTH and TILE_HEIGHT.
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* this is to handle edge tiles of a drawable.
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*/
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TileRowHint *rowhint; /* An array of hints for rendering purposes */
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guchar *data; /* the data for the tile. this may be NULL in which
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* case the tile data is on disk.
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*/
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int swap_num; /* the index into the file table of the file to be used
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* for swapping. swap_num 1 is always the global swap file.
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*/
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off_t swap_offset; /* the offset within the swap file of the tile data.
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* if the tile data is in memory this will be set to -1.
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*/
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TileLink *tlink;
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Tile *next;
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Tile *prev; /* List pointers for the tile cache lists */
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void *listhead; /* Pointer to the head of the list this tile is on */
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#ifdef USE_PTHREADS
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pthread_mutex_t mutex;
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#endif
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};
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#ifdef USE_PTHREADS
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#define TILE_MUTEX_LOCK(tile) pthread_mutex_lock(&((tile)->mutex))
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#define TILE_MUTEX_UNLOCK(tile) pthread_mutex_unlock(&((tile)->mutex))
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#else
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#define TILE_MUTEX_LOCK(tile) /* nothing */
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#define TILE_MUTEX_UNLOCK(tile) /* nothing */
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#endif
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#endif /* __TILE_PVT_H__ */
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