util/disk_cache: Switch to multipart mesa-db cache

Replace single file mesa-db cache with multipart mesa-db cache.
Each part of the multipart cache essentially is a single file
mesa-db cache, aka database shard. Multipart cache brings much
more optimized cache eviction times in comparison to a single file
cache.

Acked-by: Timothy Arceri <tarceri@itsqueeze.com>
Signed-off-by: Dmitry Osipenko <dmitry.osipenko@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/20256>

src/util/disk_cache.c

@@ -190,7 +190,7 @@ disk_cache_type_create(const char *gpu_name,
    cache->max_size = max_size;
 
    if (cache->type == DISK_CACHE_DATABASE)
-      mesa_cache_db_set_size_limit(&cache->cache_db, cache->max_size);
+      mesa_cache_db_multipart_set_size_limit(&cache->cache_db, cache->max_size);
 
    /* 4 threads were chosen below because just about all modern CPUs currently
     * available that run Mesa have *at least* 4 cores. For these CPUs allowing
@@ -318,7 +318,7 @@ disk_cache_destroy(struct disk_cache *cache)
          foz_destroy(&cache->foz_db);
 
       if (cache->type == DISK_CACHE_DATABASE)
-         mesa_cache_db_close(&cache->cache_db);
+         mesa_cache_db_multipart_close(&cache->cache_db);
 
       disk_cache_destroy_mmap(cache);
    }
@@ -336,7 +336,7 @@ void
 disk_cache_remove(struct disk_cache *cache, const cache_key key)
 {
    if (cache->type == DISK_CACHE_DATABASE) {
-      mesa_cache_db_entry_remove(&cache->cache_db, key);
+      mesa_cache_db_multipart_entry_remove(&cache->cache_db, key);
       return;
    }
 

src/util/disk_cache_os.c

@@ -1054,8 +1054,8 @@ disk_cache_db_load_item(struct disk_cache *cache, const cache_key key,
                         size_t *size)
 {
    size_t cache_tem_size = 0;
-   void *cache_item = mesa_cache_db_read_entry(&cache->cache_db, key,
-                                               &cache_tem_size);
+   void *cache_item = mesa_cache_db_multipart_read_entry(&cache->cache_db,
+                                                         key, &cache_tem_size);
    if (!cache_item)
       return NULL;
 
@@ -1075,8 +1075,9 @@ disk_cache_db_write_item_to_disk(struct disk_cache_put_job *dc_job)
    if (!create_cache_item_header_and_blob(dc_job, &cache_blob))
       return false;
 
-   bool r = mesa_cache_db_entry_write(&dc_job->cache->cache_db, dc_job->key,
-                                      cache_blob.data, cache_blob.size);
+   bool r = mesa_cache_db_multipart_entry_write(&dc_job->cache->cache_db,
+                                                dc_job->key, cache_blob.data,
+                                                cache_blob.size);
 
    blob_finish(&cache_blob);
    return r;
@@ -1085,7 +1086,7 @@ disk_cache_db_write_item_to_disk(struct disk_cache_put_job *dc_job)
 bool
 disk_cache_db_load_cache_index(void *mem_ctx, struct disk_cache *cache)
 {
-   return mesa_cache_db_open(&cache->cache_db, cache->path);
+   return mesa_cache_db_multipart_open(&cache->cache_db, cache->path);
 }
 #endif
 

src/util/disk_cache_os.h

@@ -34,6 +34,7 @@
 
 #include "util/fossilize_db.h"
 #include "util/mesa_cache_db.h"
+#include "util/mesa_cache_db_multipart.h"
 
 #ifdef __cplusplus
 extern "C" {
@@ -64,7 +65,7 @@ struct disk_cache {
 
    struct foz_db foz_db;
 
-   struct mesa_cache_db cache_db;
+   struct mesa_cache_db_multipart cache_db;
 
    enum disk_cache_type type;