+
+struct serialized_nir {
+ unsigned char sha1_key[20];
+ size_t size;
+ char data[0];
+};
+
+struct nir_shader *
+anv_device_search_for_nir(struct anv_device *device,
+ struct anv_pipeline_cache *cache,
+ const nir_shader_compiler_options *nir_options,
+ unsigned char sha1_key[20],
+ void *mem_ctx)
+{
+ if (cache && cache->nir_cache) {
+ const struct serialized_nir *snir = NULL;
+
+ pthread_mutex_lock(&cache->mutex);
+ struct hash_entry *entry =
+ _mesa_hash_table_search(cache->nir_cache, sha1_key);
+ if (entry)
+ snir = entry->data;
+ pthread_mutex_unlock(&cache->mutex);
+
+ if (snir) {
+ struct blob_reader blob;
+ blob_reader_init(&blob, snir->data, snir->size);
+
+ nir_shader *nir = nir_deserialize(mem_ctx, nir_options, &blob);
+ if (blob.overrun) {
+ ralloc_free(nir);
+ } else {
+ return nir;
+ }
+ }
+ }
+
+ return NULL;
+}
+
+void
+anv_device_upload_nir(struct anv_device *device,
+ struct anv_pipeline_cache *cache,
+ const struct nir_shader *nir,
+ unsigned char sha1_key[20])
+{
+ if (cache && cache->nir_cache) {
+ pthread_mutex_lock(&cache->mutex);
+ struct hash_entry *entry =
+ _mesa_hash_table_search(cache->nir_cache, sha1_key);
+ pthread_mutex_unlock(&cache->mutex);
+ if (entry)
+ return;
+
+ struct blob blob;
+ blob_init(&blob);
+
+ nir_serialize(&blob, nir, false);
+ if (blob.out_of_memory) {
+ blob_finish(&blob);
+ return;
+ }
+
+ pthread_mutex_lock(&cache->mutex);
+ /* Because ralloc isn't thread-safe, we have to do all this inside the
+ * lock. We could unlock for the big memcpy but it's probably not worth
+ * the hassle.
+ */
+ entry = _mesa_hash_table_search(cache->nir_cache, sha1_key);
+ if (entry) {
+ blob_finish(&blob);
+ pthread_mutex_unlock(&cache->mutex);
+ return;
+ }
+
+ struct serialized_nir *snir =
+ ralloc_size(cache->nir_cache, sizeof(*snir) + blob.size);
+ memcpy(snir->sha1_key, sha1_key, 20);
+ snir->size = blob.size;
+ memcpy(snir->data, blob.data, blob.size);
+
+ blob_finish(&blob);
+
+ _mesa_hash_table_insert(cache->nir_cache, snir->sha1_key, snir);
+
+ pthread_mutex_unlock(&cache->mutex);
+ }
+}