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svn path=/trunk/netsurf/; revision=12741
This commit is contained in:
Michael Drake 2011-09-05 17:25:08 +00:00
parent 4e2a0bbc45
commit 95a38c1274
1 changed files with 32 additions and 1 deletions
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33
image/image_cache.c
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@ -47,11 +47,13 @@ struct image_cache_entry_s {
image_cache_convert_fn *convert;
/* Statistics for replacement algorithm */
unsigned int redraw_count; /**< number of times object has been drawn */
cache_age redraw_age; /**< Age of last redraw */
size_t bitmap_size; /**< size if storage occupied by bitmap */
cache_age bitmap_age; /**< Age of last conversion to a bitmap by cache*/
int conversion_count; /**< Number of times image has been converted */
};
/** Current state of the cache.
@ -84,6 +86,11 @@ struct image_cache_s {
int fail_count; /* bitmap was not available at plot time, required conversion which failed */
int total_unrendered; /* bitmap was freed without ever being required for redraw */
int total_extra_conversions; /* counts total number of conversions of images, after the first */
int total_extra_conversions_count; /* counts total number of images with more than one conversion */
int peak_conversions; /* bitmap with most conversions was converted this many times */
unsigned int peak_conversions_size; /* bitmap with most conversions this size */
};
static struct image_cache_s *image_cache = NULL;
@ -121,6 +128,7 @@ static struct image_cache_entry_s *image_cache__find(const struct content *c)
static void image_cache_stats_bitmap_add(struct image_cache_entry_s *centry)
{
centry->bitmap_age = image_cache->current_age;
centry->conversion_count++;
image_cache->total_bitmap_size += centry->bitmap_size;
image_cache->bitmap_count++;
@ -135,6 +143,23 @@ static void image_cache_stats_bitmap_add(struct image_cache_entry_s *centry)
image_cache->max_bitmap_count = image_cache->bitmap_count;
image_cache->max_bitmap_count_size = image_cache->total_bitmap_size;
}
centry->conversion_count++;
if (centry->conversion_count == 2) {
image_cache->total_extra_conversions_count++;
}
if (centry->conversion_count > 1) {
image_cache->total_extra_conversions++;
}
if ((centry->conversion_count > image_cache->peak_conversions) ||
(centry->conversion_count == image_cache->peak_conversions &&
centry->bitmap_size > image_cache->peak_conversions_size)) {
image_cache->peak_conversions = centry->conversion_count;
image_cache->peak_conversions_size = centry->bitmap_size;
}
}
static void image_cache__link(struct image_cache_entry_s *centry)
@ -323,6 +348,12 @@ nserror image_cache_fini(void)
LOG(("Total images never rendered: %d (includes %d that were converted)",
image_cache->total_unrendered,
image_cache->specultive_miss_count));
LOG(("Total number of excessive conversions: %d (from %d images converted more than once)",
image_cache->total_extra_conversions,
image_cache->total_extra_conversions_count));
LOG(("Bitmap of size %d had most (%d) conversions",
image_cache->peak_conversions_size,
image_cache->peak_conversions));
free(image_cache);
return NSERROR_OK;