anv: do not try to ref/unref NULL shaders
This situation can happen if we failed to allocate memory for the shader. v2: - We shouldn't see NULL shaders in anv_shader_bin_ref so we should not check for that (Jason). Make sure that callers don't attempt to call this function with a NULL shader and assert that this never happens (Iago). v3: - All callers to anv_shader_bin_unref seem to check for NULL before calling, so just assert that it is not NULL (Topi) Reviewed-by: Topi Pohjolainen <topi.pohjolainen@intel.com>
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@ -308,6 +308,7 @@ anv_pipeline_cache_upload_kernel(struct anv_pipeline_cache *cache,
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pthread_mutex_unlock(&cache->mutex);
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/* We increment refcount before handing it to the caller */
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if (bin)
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anv_shader_bin_ref(bin);
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return bin;
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@ -546,6 +547,8 @@ VkResult anv_MergePipelineCaches(
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struct hash_entry *entry;
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hash_table_foreach(src->cache, entry) {
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struct anv_shader_bin *bin = entry->data;
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assert(bin);
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if (_mesa_hash_table_search(dst->cache, bin->key))
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continue;
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@ -1556,14 +1556,14 @@ anv_shader_bin_destroy(struct anv_device *device, struct anv_shader_bin *shader)
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static inline void
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anv_shader_bin_ref(struct anv_shader_bin *shader)
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{
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assert(shader->ref_cnt >= 1);
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assert(shader && shader->ref_cnt >= 1);
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__sync_fetch_and_add(&shader->ref_cnt, 1);
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}
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static inline void
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anv_shader_bin_unref(struct anv_device *device, struct anv_shader_bin *shader)
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{
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assert(shader->ref_cnt >= 1);
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assert(shader && shader->ref_cnt >= 1);
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if (__sync_fetch_and_add(&shader->ref_cnt, -1) == 1)
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anv_shader_bin_destroy(device, shader);
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}
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