void mail_cache_sync_lost_handler(struct mail_index *index)
{
struct mail_cache *cache = index->cache;
if (!MAIL_CACHE_IS_UNUSABLE(cache)) {
mail_index_flush_read_cache(cache->index, cache->filepath,
cache->fd, cache->locked);
}
file_cache_invalidate(cache->file_cache, 0, (uoff_t)-1);
}
static void squat_uidlist_free_from_memory(struct squat_uidlist *uidlist)
{
size_t page_size = mmap_get_page_size();
if (uidlist->file_cache != NULL) {
file_cache_invalidate(uidlist->file_cache,
page_size, (uoff_t)-1);
} else {
(void)madvise(uidlist->mmap_base, uidlist->mmap_size,
MADV_DONTNEED);
}
}
int mail_cache_sync_handler(struct mail_index_sync_map_ctx *sync_ctx,
uint32_t seq ATTR_UNUSED,
void *old_data, const void *new_data,
void **context)
{
struct mail_index_view *view = sync_ctx->view;
struct mail_index *index = view->index;
struct mail_cache *cache = index->cache;
struct mail_cache_sync_context *ctx = *context;
const uint32_t *old_cache_offset = old_data;
const uint32_t *new_cache_offset = new_data;
uint32_t cache_file_seq, cur_seq, tail_seq;
uoff_t cur_offset, tail_offset;
int ret;
if (new_cache_offset == NULL) {
mail_cache_handler_deinit(sync_ctx, ctx);
*context = NULL;
return 1;
}
ctx = mail_cache_handler_init(context);
if (cache->file_cache != NULL && !MAIL_CACHE_IS_UNUSABLE(cache)) {
/* flush read cache only once per sync */
if (!ctx->nfs_read_cache_flushed &&
(index->flags & MAIL_INDEX_OPEN_FLAG_NFS_FLUSH) != 0) {
ctx->nfs_read_cache_flushed = TRUE;
mail_index_flush_read_cache(index,
cache->filepath, cache->fd,
cache->locked);
}
/* don't invalidate anything that's already been invalidated
within this sync. */
if (*new_cache_offset < ctx->invalidate_highwater) {
file_cache_invalidate(cache->file_cache,
*new_cache_offset,
ctx->invalidate_highwater -
*new_cache_offset);
ctx->invalidate_highwater = *new_cache_offset;
}
}
if (*old_cache_offset == 0 || *old_cache_offset == *new_cache_offset ||
sync_ctx->type == MAIL_INDEX_SYNC_HANDLER_VIEW)
return 1;
mail_transaction_log_view_get_prev_pos(view->log_view,
&cur_seq, &cur_offset);
mail_transaction_log_get_mailbox_sync_pos(index->log,
&tail_seq, &tail_offset);
if (LOG_IS_BEFORE(cur_seq, cur_offset, tail_seq, tail_offset)) {
/* already been linked */
return 1;
}
/* we'll need to link the old and new cache records */
ret = mail_cache_handler_lock(ctx, cache);
if (ret <= 0)
return ret < 0 ? -1 : 1;
if (!get_cache_file_seq(view, &cache_file_seq))
return 1;
if (cache_file_seq != cache->hdr->file_seq) {
/* cache has been compressed, don't modify it */
return 1;
}
if (mail_cache_link(cache, *old_cache_offset, *new_cache_offset) < 0)
return -1;
return 1;
}