add llama_lora_adapter_clear (ggml-org#8653)

Author: ngxson

include/llama.h

@@ -529,12 +529,16 @@ extern "C" {
             struct llama_lora_adapter * adapter,
             float scale);
 
-    // Remove a LoRA adapter from given context
+    // Remove a specific LoRA adapter from given context
     // Return -1 if the adapter is not present in the context
     LLAMA_API int32_t llama_lora_adapter_remove(
             struct llama_context * ctx,
             struct llama_lora_adapter * adapter);
 
+    // Remove all LoRA adapters from given context
+    LLAMA_API void llama_lora_adapter_clear(
+            struct llama_context * ctx);
+
     // Manually free a LoRA adapter
     // Note: loaded adapters will be free when the associated model is deleted
     LLAMA_API void llama_lora_adapter_free(struct llama_lora_adapter * adapter);

src/llama.cpp

@@ -16202,6 +16202,10 @@ int32_t llama_lora_adapter_remove(
     return -1;
 }
 
+void llama_lora_adapter_clear(struct llama_context * ctx) {
+    ctx->lora_adapters.clear();
+}
+
 void llama_lora_adapter_free(struct llama_lora_adapter * adapter) {
     delete adapter;
 }