1 files changed, 90 insertions, 0 deletions
diff --git a/server/dcc.c b/server/dcc.c
index 1e188140..9af6d842 100644
--- a/server/dcc.c
+++ b/server/dcc.c
@@ -940,3 +940,93 @@ void dcc_palette_cache_reset(DisplayChannelClient *dcc)
 {
     red_palette_cache_reset(dcc, CLIENT_PALETTE_CACHE_SIZE);
 }
+
+static void dcc_push_release(DisplayChannelClient *dcc, uint8_t type, uint64_t id,
+                             uint64_t* sync_data)
+{
+    FreeList *free_list = &dcc->send_data.free_list;
+    int i;
+
+    for (i = 0; i < MAX_CACHE_CLIENTS; i++) {
+        free_list->sync[i] = MAX(free_list->sync[i], sync_data[i]);
+    }
+
+    if (free_list->res->count == free_list->res_size) {
+        SpiceResourceList *new_list;
+        new_list = spice_malloc(sizeof(*new_list) +
+                                free_list->res_size * sizeof(SpiceResourceID) * 2);
+        new_list->count = free_list->res->count;
+        memcpy(new_list->resources, free_list->res->resources,
+               new_list->count * sizeof(SpiceResourceID));
+        free(free_list->res);
+        free_list->res = new_list;
+        free_list->res_size *= 2;
+    }
+    free_list->res->resources[free_list->res->count].type = type;
+    free_list->res->resources[free_list->res->count++].id = id;
+}
+
+int dcc_pixmap_cache_unlocked_add(DisplayChannelClient *dcc, uint64_t id,
+                                  uint32_t size, int lossy)
+{
+    PixmapCache *cache = dcc->pixmap_cache;
+    NewCacheItem *item;
+    uint64_t serial;
+    int key;
+
+    spice_assert(size > 0);
+
+    item = spice_new(NewCacheItem, 1);
+    serial = red_channel_client_get_message_serial(RED_CHANNEL_CLIENT(dcc));
+
+    if (cache->generation != dcc->pixmap_cache_generation) {
+        if (!dcc->pending_pixmaps_sync) {
+            red_channel_client_pipe_add_type(
+                                             RED_CHANNEL_CLIENT(dcc), PIPE_ITEM_TYPE_PIXMAP_SYNC);
+            dcc->pending_pixmaps_sync = TRUE;
+        }
+        free(item);
+        return FALSE;
+    }
+
+    cache->available -= size;
+    while (cache->available < 0) {
+        NewCacheItem *tail;
+        NewCacheItem **now;
+
+        if (!(tail = (NewCacheItem *)ring_get_tail(&cache->lru)) ||
+                                                   tail->sync[dcc->common.id] == serial) {
+            cache->available += size;
+            free(item);
+            return FALSE;
+        }
+
+        now = &cache->hash_table[BITS_CACHE_HASH_KEY(tail->id)];
+        for (;;) {
+            spice_assert(*now);
+            if (*now == tail) {
+                *now = tail->next;
+                break;
+            }
+            now = &(*now)->next;
+        }
+        ring_remove(&tail->lru_link);
+        cache->items--;
+        cache->available += tail->size;
+        cache->sync[dcc->common.id] = serial;
+        dcc_push_release(dcc, SPICE_RES_TYPE_PIXMAP, tail->id, tail->sync);
+        free(tail);
+    }
+    ++cache->items;
+    item->next = cache->hash_table[(key = BITS_CACHE_HASH_KEY(id))];
+    cache->hash_table[key] = item;
+    ring_item_init(&item->lru_link);
+    ring_add(&cache->lru, &item->lru_link);
+    item->id = id;
+    item->size = size;
+    item->lossy = lossy;
+    memset(item->sync, 0, sizeof(item->sync));
+    item->sync[dcc->common.id] = serial;
+    cache->sync[dcc->common.id] = serial;
+    return TRUE;
+}