Update llama.cpp

Author: abetlen

llama_cpp/llama_cpp.py

@@ -568,13 +568,33 @@ def llama_model_n_embd(model: llama_model_p) -> int:
 
 
 # // Get a string describing the model type
-# LLAMA_API int llama_model_type(const struct llama_model * model, char * buf, size_t buf_size);
-def llama_model_type(model: llama_model_p, buf: bytes, buf_size: c_size_t) -> int:
-    return _lib.llama_model_type(model, buf, buf_size)
+# LLAMA_API int llama_model_desc(const struct llama_model * model, char * buf, size_t buf_size);
+def llama_model_desc(model: llama_model_p, buf: bytes, buf_size: c_size_t) -> int:
+    return _lib.llama_model_desc(model, buf, buf_size)
 
 
-_lib.llama_model_type.argtypes = [llama_model_p, c_char_p, c_size_t]
-_lib.llama_model_type.restype = c_int
+_lib.llama_model_desc.argtypes = [llama_model_p, c_char_p, c_size_t]
+_lib.llama_model_desc.restype = c_int
+
+
+# // Returns the total size of all the tensors in the model in bytes
+# LLAMA_API uint64_t llama_model_size(const struct llama_model * model);
+def llama_model_size(model: llama_model_p) -> int:
+    return _lib.llama_model_size(model)
+
+
+_lib.llama_model_size.argtypes = [llama_model_p]
+_lib.llama_model_size.restype = ctypes.c_uint64
+
+
+# // Returns the total number of parameters in the model
+# LLAMA_API uint64_t llama_model_n_params(const struct llama_model * model);
+def llama_model_n_params(model: llama_model_p) -> int:
+    return _lib.llama_model_n_params(model)
+
+
+_lib.llama_model_n_params.argtypes = [llama_model_p]
+_lib.llama_model_n_params.restype = ctypes.c_uint64
 
 
 # // Returns 0 on success
@@ -1029,6 +1049,74 @@ def llama_grammar_free(grammar: llama_grammar_p):
 _lib.llama_grammar_free.argtypes = [llama_grammar_p]
 _lib.llama_grammar_free.restype = None
 
+# //
+# // Beam search
+# //
+
+
+# struct llama_beam_view {
+#     const llama_token * tokens;
+#     size_t n_tokens;
+#     float p;   // Cumulative beam probability (renormalized relative to all beams)
+#     bool eob;  // Callback should set this to true when a beam is at end-of-beam.
+# };
+class llama_beam_view(ctypes.Structure):
+    _fields_ = [
+        ("tokens", llama_token_p),
+        ("n_tokens", c_size_t),
+        ("p", c_float),
+        ("eob", c_bool),
+    ]
+
+
+# // Passed to beam_search_callback function.
+# // Whenever 0 < common_prefix_length, this number of tokens should be copied from any of the beams
+# // (e.g. beams[0]) as they will be removed (shifted) from all beams in all subsequent callbacks.
+# // These pointers are valid only during the synchronous callback, so should not be saved.
+# struct llama_beams_state {
+#     struct llama_beam_view * beam_views;
+#     size_t n_beams;               // Number of elements in beam_views[].
+#     size_t common_prefix_length;  // Current max length of prefix tokens shared by all beams.
+#     bool last_call;               // True iff this is the last callback invocation.
+# };
+class llama_beams_state(ctypes.Structure):
+    _fields_ = [
+        ("beam_views", POINTER(llama_beam_view)),
+        ("n_beams", c_size_t),
+        ("common_prefix_length", c_size_t),
+        ("last_call", c_bool),
+    ]
+
+
+# // Type of pointer to the beam_search_callback function.
+# // void* callback_data is any custom data passed to llama_beam_search, that is subsequently
+# // passed back to beam_search_callback. This avoids having to use global variables in the callback.
+# typedef void (*llama_beam_search_callback_fn_t)(void * callback_data, llama_beams_state);
+llama_beam_search_callback_fn_t = ctypes.CFUNCTYPE(None, c_void_p, llama_beams_state)
+
+
+# /// @details Deterministically returns entire sentence constructed by a beam search.
+# /// @param ctx Pointer to the llama_context.
+# /// @param callback Invoked for each iteration of the beam_search loop, passing in beams_state.
+# /// @param callback_data A pointer that is simply passed back to callback.
+# /// @param n_beams Number of beams to use.
+# /// @param n_past Number of tokens already evaluated.
+# /// @param n_predict Maximum number of tokens to predict. EOS may occur earlier.
+# /// @param n_threads Number of threads as passed to llama_eval().
+# LLAMA_API void llama_beam_search(struct llama_context * ctx, llama_beam_search_callback_fn_t callback, void * callback_data, size_t n_beams, int n_past, int n_predict, int n_threads);
+def llama_beam_search(
+    ctx: llama_context_p,
+    callback: "ctypes._CFuncPtr[None, c_void_p, llama_beams_state]",  # type: ignore
+    callback_data: c_void_p,
+    n_beams: c_size_t,
+    n_past: c_int,
+    n_predict: c_int,
+    n_threads: c_int,
+):
+    return _lib.llama_beam_search(
+        ctx, callback, callback_data, n_beams, n_past, n_predict, n_threads
+    )
+
 
 # //
 # // Sampling functions