llama.h 52 KB

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  1. #ifndef LLAMA_H
  2. #define LLAMA_H
  3. #include "ggml.h"
  4. #include "ggml-backend.h"
  5. #include <stddef.h>
  6. #include <stdint.h>
  7. #include <stdio.h>
  8. #include <stdbool.h>
  9. #ifdef LLAMA_SHARED
  10. # if defined(_WIN32) && !defined(__MINGW32__)
  11. # ifdef LLAMA_BUILD
  12. # define LLAMA_API __declspec(dllexport)
  13. # else
  14. # define LLAMA_API __declspec(dllimport)
  15. # endif
  16. # else
  17. # define LLAMA_API __attribute__ ((visibility ("default")))
  18. # endif
  19. #else
  20. # define LLAMA_API
  21. #endif
  22. #ifdef __GNUC__
  23. # define DEPRECATED(func, hint) func __attribute__((deprecated(hint)))
  24. #elif defined(_MSC_VER)
  25. # define DEPRECATED(func, hint) __declspec(deprecated(hint)) func
  26. #else
  27. # define DEPRECATED(func, hint) func
  28. #endif
  29. #define LLAMA_DEFAULT_SEED 0xFFFFFFFF
  30. #define LLAMA_MAX_RNG_STATE (64*1024)
  31. #define LLAMA_FILE_MAGIC_GGLA 0x67676c61u // 'ggla'
  32. #define LLAMA_FILE_MAGIC_GGSN 0x6767736eu // 'ggsn'
  33. #define LLAMA_FILE_MAGIC_GGSQ 0x67677371u // 'ggsq'
  34. #define LLAMA_SESSION_MAGIC LLAMA_FILE_MAGIC_GGSN
  35. #define LLAMA_SESSION_VERSION 6
  36. #define LLAMA_STATE_SEQ_MAGIC LLAMA_FILE_MAGIC_GGSQ
  37. #define LLAMA_STATE_SEQ_VERSION 1
  38. #ifdef __cplusplus
  39. extern "C" {
  40. #endif
  41. //
  42. // C interface
  43. //
  44. // TODO: show sample usage
  45. //
  46. struct llama_model;
  47. struct llama_context;
  48. typedef int32_t llama_pos;
  49. typedef int32_t llama_token;
  50. typedef int32_t llama_seq_id;
  51. enum llama_vocab_type {
  52. LLAMA_VOCAB_TYPE_NONE = 0, // For models without vocab
  53. LLAMA_VOCAB_TYPE_SPM = 1, // LLaMA tokenizer based on byte-level BPE with byte fallback
  54. LLAMA_VOCAB_TYPE_BPE = 2, // GPT-2 tokenizer based on byte-level BPE
  55. LLAMA_VOCAB_TYPE_WPM = 3, // BERT tokenizer based on WordPiece
  56. };
  57. // pre-tokenization types
  58. enum llama_vocab_pre_type {
  59. LLAMA_VOCAB_PRE_TYPE_DEFAULT = 0,
  60. LLAMA_VOCAB_PRE_TYPE_LLAMA3 = 1,
  61. LLAMA_VOCAB_PRE_TYPE_DEEPSEEK_LLM = 2,
  62. LLAMA_VOCAB_PRE_TYPE_DEEPSEEK_CODER = 3,
  63. LLAMA_VOCAB_PRE_TYPE_FALCON = 4,
  64. LLAMA_VOCAB_PRE_TYPE_MPT = 5,
  65. LLAMA_VOCAB_PRE_TYPE_STARCODER = 6,
  66. LLAMA_VOCAB_PRE_TYPE_GPT2 = 7,
  67. };
  68. // note: these values should be synchronized with ggml_rope
  69. // TODO: maybe move this enum to ggml.h (ggml_rope_type)
  70. enum llama_rope_type {
  71. LLAMA_ROPE_TYPE_NONE = -1,
  72. LLAMA_ROPE_TYPE_NORM = 0,
  73. LLAMA_ROPE_TYPE_NEOX = 2,
  74. LLAMA_ROPE_TYPE_GLM = 4,
  75. };
  76. enum llama_token_type {
  77. LLAMA_TOKEN_TYPE_UNDEFINED = 0,
  78. LLAMA_TOKEN_TYPE_NORMAL = 1,
  79. LLAMA_TOKEN_TYPE_UNKNOWN = 2,
  80. LLAMA_TOKEN_TYPE_CONTROL = 3,
  81. LLAMA_TOKEN_TYPE_USER_DEFINED = 4,
  82. LLAMA_TOKEN_TYPE_UNUSED = 5,
  83. LLAMA_TOKEN_TYPE_BYTE = 6,
  84. };
  85. // model file types
  86. enum llama_ftype {
  87. LLAMA_FTYPE_ALL_F32 = 0,
  88. LLAMA_FTYPE_MOSTLY_F16 = 1, // except 1d tensors
  89. LLAMA_FTYPE_MOSTLY_Q4_0 = 2, // except 1d tensors
  90. LLAMA_FTYPE_MOSTLY_Q4_1 = 3, // except 1d tensors
  91. LLAMA_FTYPE_MOSTLY_Q4_1_SOME_F16 = 4, // tok_embeddings.weight and output.weight are F16
  92. // LLAMA_FTYPE_MOSTLY_Q4_2 = 5, // support has been removed
  93. // LLAMA_FTYPE_MOSTLY_Q4_3 = 6, // support has been removed
  94. LLAMA_FTYPE_MOSTLY_Q8_0 = 7, // except 1d tensors
  95. LLAMA_FTYPE_MOSTLY_Q5_0 = 8, // except 1d tensors
  96. LLAMA_FTYPE_MOSTLY_Q5_1 = 9, // except 1d tensors
  97. LLAMA_FTYPE_MOSTLY_Q2_K = 10, // except 1d tensors
  98. LLAMA_FTYPE_MOSTLY_Q3_K_S = 11, // except 1d tensors
  99. LLAMA_FTYPE_MOSTLY_Q3_K_M = 12, // except 1d tensors
  100. LLAMA_FTYPE_MOSTLY_Q3_K_L = 13, // except 1d tensors
  101. LLAMA_FTYPE_MOSTLY_Q4_K_S = 14, // except 1d tensors
  102. LLAMA_FTYPE_MOSTLY_Q4_K_M = 15, // except 1d tensors
  103. LLAMA_FTYPE_MOSTLY_Q5_K_S = 16, // except 1d tensors
  104. LLAMA_FTYPE_MOSTLY_Q5_K_M = 17, // except 1d tensors
  105. LLAMA_FTYPE_MOSTLY_Q6_K = 18, // except 1d tensors
  106. LLAMA_FTYPE_MOSTLY_IQ2_XXS = 19, // except 1d tensors
  107. LLAMA_FTYPE_MOSTLY_IQ2_XS = 20, // except 1d tensors
  108. LLAMA_FTYPE_MOSTLY_Q2_K_S = 21, // except 1d tensors
  109. LLAMA_FTYPE_MOSTLY_IQ3_XS = 22, // except 1d tensors
  110. LLAMA_FTYPE_MOSTLY_IQ3_XXS = 23, // except 1d tensors
  111. LLAMA_FTYPE_MOSTLY_IQ1_S = 24, // except 1d tensors
  112. LLAMA_FTYPE_MOSTLY_IQ4_NL = 25, // except 1d tensors
  113. LLAMA_FTYPE_MOSTLY_IQ3_S = 26, // except 1d tensors
  114. LLAMA_FTYPE_MOSTLY_IQ3_M = 27, // except 1d tensors
  115. LLAMA_FTYPE_MOSTLY_IQ2_S = 28, // except 1d tensors
  116. LLAMA_FTYPE_MOSTLY_IQ2_M = 29, // except 1d tensors
  117. LLAMA_FTYPE_MOSTLY_IQ4_XS = 30, // except 1d tensors
  118. LLAMA_FTYPE_MOSTLY_IQ1_M = 31, // except 1d tensors
  119. LLAMA_FTYPE_GUESSED = 1024, // not specified in the model file
  120. };
  121. enum llama_rope_scaling_type {
  122. LLAMA_ROPE_SCALING_TYPE_UNSPECIFIED = -1,
  123. LLAMA_ROPE_SCALING_TYPE_NONE = 0,
  124. LLAMA_ROPE_SCALING_TYPE_LINEAR = 1,
  125. LLAMA_ROPE_SCALING_TYPE_YARN = 2,
  126. LLAMA_ROPE_SCALING_TYPE_MAX_VALUE = LLAMA_ROPE_SCALING_TYPE_YARN,
  127. };
  128. enum llama_pooling_type {
  129. LLAMA_POOLING_TYPE_UNSPECIFIED = -1,
  130. LLAMA_POOLING_TYPE_NONE = 0,
  131. LLAMA_POOLING_TYPE_MEAN = 1,
  132. LLAMA_POOLING_TYPE_CLS = 2,
  133. };
  134. enum llama_split_mode {
  135. LLAMA_SPLIT_MODE_NONE = 0, // single GPU
  136. LLAMA_SPLIT_MODE_LAYER = 1, // split layers and KV across GPUs
  137. LLAMA_SPLIT_MODE_ROW = 2, // split rows across GPUs
  138. };
  139. typedef struct llama_token_data {
  140. llama_token id; // token id
  141. float logit; // log-odds of the token
  142. float p; // probability of the token
  143. } llama_token_data;
  144. typedef struct llama_token_data_array {
  145. llama_token_data * data;
  146. size_t size;
  147. bool sorted;
  148. } llama_token_data_array;
  149. typedef bool (*llama_progress_callback)(float progress, void * user_data);
  150. // Input data for llama_decode
  151. // A llama_batch object can contain input about one or many sequences
  152. // The provided arrays (i.e. token, embd, pos, etc.) must have size of n_tokens
  153. //
  154. // - token : the token ids of the input (used when embd is NULL)
  155. // - embd : token embeddings (i.e. float vector of size n_embd) (used when token is NULL)
  156. // - pos : the positions of the respective token in the sequence
  157. // - seq_id : the sequence to which the respective token belongs
  158. // - logits : if zero, the logits (and/or the embeddings) for the respective token will not be output
  159. //
  160. typedef struct llama_batch {
  161. int32_t n_tokens;
  162. llama_token * token;
  163. float * embd;
  164. llama_pos * pos;
  165. int32_t * n_seq_id;
  166. llama_seq_id ** seq_id;
  167. int8_t * logits; // TODO: rename this to "output"
  168. // NOTE: helpers for smooth API transition - can be deprecated in the future
  169. // for future-proof code, use the above fields instead and ignore everything below
  170. //
  171. // pos[i] = all_pos_0 + i*all_pos_1
  172. //
  173. llama_pos all_pos_0; // used if pos == NULL
  174. llama_pos all_pos_1; // used if pos == NULL
  175. llama_seq_id all_seq_id; // used if seq_id == NULL
  176. } llama_batch;
  177. enum llama_model_kv_override_type {
  178. LLAMA_KV_OVERRIDE_TYPE_INT,
  179. LLAMA_KV_OVERRIDE_TYPE_FLOAT,
  180. LLAMA_KV_OVERRIDE_TYPE_BOOL,
  181. LLAMA_KV_OVERRIDE_TYPE_STR,
  182. };
  183. struct llama_model_kv_override {
  184. enum llama_model_kv_override_type tag;
  185. char key[128];
  186. union {
  187. int64_t val_i64;
  188. double val_f64;
  189. bool val_bool;
  190. char val_str[128];
  191. };
  192. };
  193. struct llama_model_params {
  194. int32_t n_gpu_layers; // number of layers to store in VRAM
  195. enum llama_split_mode split_mode; // how to split the model across multiple GPUs
  196. // main_gpu interpretation depends on split_mode:
  197. // LLAMA_SPLIT_NONE: the GPU that is used for the entire model
  198. // LLAMA_SPLIT_ROW: the GPU that is used for small tensors and intermediate results
  199. // LLAMA_SPLIT_LAYER: ignored
  200. int32_t main_gpu;
  201. // proportion of the model (layers or rows) to offload to each GPU, size: llama_max_devices()
  202. const float * tensor_split;
  203. // Called with a progress value between 0.0 and 1.0. Pass NULL to disable.
  204. // If the provided progress_callback returns true, model loading continues.
  205. // If it returns false, model loading is immediately aborted.
  206. llama_progress_callback progress_callback;
  207. // context pointer passed to the progress callback
  208. void * progress_callback_user_data;
  209. // override key-value pairs of the model meta data
  210. const struct llama_model_kv_override * kv_overrides;
  211. // Keep the booleans together to avoid misalignment during copy-by-value.
  212. bool vocab_only; // only load the vocabulary, no weights
  213. bool use_mmap; // use mmap if possible
  214. bool use_mlock; // force system to keep model in RAM
  215. bool check_tensors; // validate model tensor data
  216. };
  217. struct llama_context_params {
  218. uint32_t seed; // RNG seed, -1 for random
  219. uint32_t n_ctx; // text context, 0 = from model
  220. uint32_t n_batch; // logical maximum batch size that can be submitted to llama_decode
  221. uint32_t n_ubatch; // physical maximum batch size
  222. uint32_t n_seq_max; // max number of sequences (i.e. distinct states for recurrent models)
  223. uint32_t n_threads; // number of threads to use for generation
  224. uint32_t n_threads_batch; // number of threads to use for batch processing
  225. enum llama_rope_scaling_type rope_scaling_type; // RoPE scaling type, from `enum llama_rope_scaling_type`
  226. enum llama_pooling_type pooling_type; // whether to pool (sum) embedding results by sequence id
  227. // (ignored if no pooling layer)
  228. // ref: https://github.com/ggerganov/llama.cpp/pull/2054
  229. float rope_freq_base; // RoPE base frequency, 0 = from model
  230. float rope_freq_scale; // RoPE frequency scaling factor, 0 = from model
  231. float yarn_ext_factor; // YaRN extrapolation mix factor, negative = from model
  232. float yarn_attn_factor; // YaRN magnitude scaling factor
  233. float yarn_beta_fast; // YaRN low correction dim
  234. float yarn_beta_slow; // YaRN high correction dim
  235. uint32_t yarn_orig_ctx; // YaRN original context size
  236. float defrag_thold; // defragment the KV cache if holes/size > thold, < 0 disabled (default)
  237. ggml_backend_sched_eval_callback cb_eval;
  238. void * cb_eval_user_data;
  239. enum ggml_type type_k; // data type for K cache
  240. enum ggml_type type_v; // data type for V cache
  241. // Keep the booleans together to avoid misalignment during copy-by-value.
  242. bool logits_all; // the llama_decode() call computes all logits, not just the last one (DEPRECATED - set llama_batch.logits instead)
  243. bool embeddings; // if true, extract embeddings (together with logits)
  244. bool offload_kqv; // whether to offload the KQV ops (including the KV cache) to GPU
  245. bool flash_attn; // whether to use flash attention
  246. // Abort callback
  247. // if it returns true, execution of llama_decode() will be aborted
  248. // currently works only with CPU execution
  249. ggml_abort_callback abort_callback;
  250. void * abort_callback_data;
  251. };
  252. // model quantization parameters
  253. typedef struct llama_model_quantize_params {
  254. int32_t nthread; // number of threads to use for quantizing, if <=0 will use std::thread::hardware_concurrency()
  255. enum llama_ftype ftype; // quantize to this llama_ftype
  256. enum ggml_type output_tensor_type; // output tensor type
  257. enum ggml_type token_embedding_type; // itoken embeddings tensor type
  258. bool allow_requantize; // allow quantizing non-f32/f16 tensors
  259. bool quantize_output_tensor; // quantize output.weight
  260. bool only_copy; // only copy tensors - ftype, allow_requantize and quantize_output_tensor are ignored
  261. bool pure; // quantize all tensors to the default type
  262. bool keep_split; // quantize to the same number of shards
  263. void * imatrix; // pointer to importance matrix data
  264. void * kv_overrides; // pointer to vector containing overrides
  265. } llama_model_quantize_params;
  266. // grammar types
  267. struct llama_grammar;
  268. // grammar element type
  269. enum llama_gretype {
  270. // end of rule definition
  271. LLAMA_GRETYPE_END = 0,
  272. // start of alternate definition for rule
  273. LLAMA_GRETYPE_ALT = 1,
  274. // non-terminal element: reference to rule
  275. LLAMA_GRETYPE_RULE_REF = 2,
  276. // terminal element: character (code point)
  277. LLAMA_GRETYPE_CHAR = 3,
  278. // inverse char(s) ([^a], [^a-b] [^abc])
  279. LLAMA_GRETYPE_CHAR_NOT = 4,
  280. // modifies a preceding LLAMA_GRETYPE_CHAR or LLAMA_GRETYPE_CHAR_ALT to
  281. // be an inclusive range ([a-z])
  282. LLAMA_GRETYPE_CHAR_RNG_UPPER = 5,
  283. // modifies a preceding LLAMA_GRETYPE_CHAR or
  284. // LLAMA_GRETYPE_CHAR_RNG_UPPER to add an alternate char to match ([ab], [a-zA])
  285. LLAMA_GRETYPE_CHAR_ALT = 6,
  286. };
  287. typedef struct llama_grammar_element {
  288. enum llama_gretype type;
  289. uint32_t value; // Unicode code point or rule ID
  290. } llama_grammar_element;
  291. // performance timing information
  292. struct llama_timings {
  293. double t_start_ms;
  294. double t_end_ms;
  295. double t_load_ms;
  296. double t_sample_ms;
  297. double t_p_eval_ms;
  298. double t_eval_ms;
  299. int32_t n_sample;
  300. int32_t n_p_eval;
  301. int32_t n_eval;
  302. };
  303. // used in chat template
  304. typedef struct llama_chat_message {
  305. const char * role;
  306. const char * content;
  307. } llama_chat_message;
  308. // Helpers for getting default parameters
  309. LLAMA_API struct llama_model_params llama_model_default_params(void);
  310. LLAMA_API struct llama_context_params llama_context_default_params(void);
  311. LLAMA_API struct llama_model_quantize_params llama_model_quantize_default_params(void);
  312. // Initialize the llama + ggml backend
  313. // If numa is true, use NUMA optimizations
  314. // Call once at the start of the program
  315. LLAMA_API void llama_backend_init(void);
  316. //optional:
  317. LLAMA_API void llama_numa_init(enum ggml_numa_strategy numa);
  318. // Call once at the end of the program - currently only used for MPI
  319. LLAMA_API void llama_backend_free(void);
  320. LLAMA_API struct llama_model * llama_load_model_from_file(
  321. const char * path_model,
  322. struct llama_model_params params);
  323. LLAMA_API void llama_free_model(struct llama_model * model);
  324. LLAMA_API struct llama_context * llama_new_context_with_model(
  325. struct llama_model * model,
  326. struct llama_context_params params);
  327. // Frees all allocated memory
  328. LLAMA_API void llama_free(struct llama_context * ctx);
  329. LLAMA_API int64_t llama_time_us(void);
  330. LLAMA_API size_t llama_max_devices(void);
  331. LLAMA_API bool llama_supports_mmap (void);
  332. LLAMA_API bool llama_supports_mlock (void);
  333. LLAMA_API bool llama_supports_gpu_offload(void);
  334. LLAMA_API const struct llama_model * llama_get_model(const struct llama_context * ctx);
  335. LLAMA_API uint32_t llama_n_ctx (const struct llama_context * ctx);
  336. LLAMA_API uint32_t llama_n_batch (const struct llama_context * ctx);
  337. LLAMA_API uint32_t llama_n_ubatch (const struct llama_context * ctx);
  338. LLAMA_API uint32_t llama_n_seq_max (const struct llama_context * ctx);
  339. LLAMA_API enum llama_pooling_type llama_pooling_type(const struct llama_context * ctx);
  340. LLAMA_API enum llama_vocab_type llama_vocab_type (const struct llama_model * model);
  341. LLAMA_API enum llama_rope_type llama_rope_type (const struct llama_model * model);
  342. LLAMA_API int32_t llama_n_vocab (const struct llama_model * model);
  343. LLAMA_API int32_t llama_n_ctx_train(const struct llama_model * model);
  344. LLAMA_API int32_t llama_n_embd (const struct llama_model * model);
  345. LLAMA_API int32_t llama_n_layer (const struct llama_model * model);
  346. // Get the model's RoPE frequency scaling factor
  347. LLAMA_API float llama_rope_freq_scale_train(const struct llama_model * model);
  348. // Functions to access the model's GGUF metadata scalar values
  349. // - The functions return the length of the string on success, or -1 on failure
  350. // - The output string is always null-terminated and cleared on failure
  351. // - GGUF array values are not supported by these functions
  352. // Get metadata value as a string by key name
  353. LLAMA_API int32_t llama_model_meta_val_str(const struct llama_model * model, const char * key, char * buf, size_t buf_size);
  354. // Get the number of metadata key/value pairs
  355. LLAMA_API int32_t llama_model_meta_count(const struct llama_model * model);
  356. // Get metadata key name by index
  357. LLAMA_API int32_t llama_model_meta_key_by_index(const struct llama_model * model, int32_t i, char * buf, size_t buf_size);
  358. // Get metadata value as a string by index
  359. LLAMA_API int32_t llama_model_meta_val_str_by_index(const struct llama_model * model, int32_t i, char * buf, size_t buf_size);
  360. // Get a string describing the model type
  361. LLAMA_API int32_t llama_model_desc(const struct llama_model * model, char * buf, size_t buf_size);
  362. // Returns the total size of all the tensors in the model in bytes
  363. LLAMA_API uint64_t llama_model_size(const struct llama_model * model);
  364. // Returns the total number of parameters in the model
  365. LLAMA_API uint64_t llama_model_n_params(const struct llama_model * model);
  366. // Get a llama model tensor
  367. LLAMA_API struct ggml_tensor * llama_get_model_tensor(struct llama_model * model, const char * name);
  368. // Returns 0 on success
  369. LLAMA_API uint32_t llama_model_quantize(
  370. const char * fname_inp,
  371. const char * fname_out,
  372. const llama_model_quantize_params * params);
  373. // Apply a LoRA adapter to a loaded model
  374. // path_base_model is the path to a higher quality model to use as a base for
  375. // the layers modified by the adapter. Can be NULL to use the current loaded model.
  376. // The model needs to be reloaded before applying a new adapter, otherwise the adapter
  377. // will be applied on top of the previous one
  378. // Returns 0 on success
  379. LLAMA_API int32_t llama_model_apply_lora_from_file(
  380. const struct llama_model * model,
  381. const char * path_lora,
  382. float scale,
  383. const char * path_base_model,
  384. int32_t n_threads);
  385. // Apply a loaded control vector to a llama_context, or if data is NULL, clear
  386. // the currently loaded vector.
  387. // n_embd should be the size of a single layer's control, and data should point
  388. // to an n_embd x n_layers buffer starting from layer 1.
  389. // il_start and il_end are the layer range the vector should apply to (both inclusive)
  390. // See llama_control_vector_load in common to load a control vector.
  391. LLAMA_API int32_t llama_control_vector_apply(
  392. struct llama_context * lctx,
  393. const float * data,
  394. size_t len,
  395. int32_t n_embd,
  396. int32_t il_start,
  397. int32_t il_end);
  398. //
  399. // KV cache
  400. //
  401. // Information associated with an individual cell in the KV cache view.
  402. struct llama_kv_cache_view_cell {
  403. // The position for this cell. Takes KV cache shifts into account.
  404. // May be negative if the cell is not populated.
  405. llama_pos pos;
  406. };
  407. // An updateable view of the KV cache.
  408. struct llama_kv_cache_view {
  409. // Number of KV cache cells. This will be the same as the context size.
  410. int32_t n_cells;
  411. // Maximum number of sequences that can exist in a cell. It's not an error
  412. // if there are more sequences in a cell than this value, however they will
  413. // not be visible in the view cells_sequences.
  414. int32_t n_seq_max;
  415. // Number of tokens in the cache. For example, if there are two populated
  416. // cells, the first with 1 sequence id in it and the second with 2 sequence
  417. // ids then you'll have 3 tokens.
  418. int32_t token_count;
  419. // Number of populated cache cells.
  420. int32_t used_cells;
  421. // Maximum contiguous empty slots in the cache.
  422. int32_t max_contiguous;
  423. // Index to the start of the max_contiguous slot range. Can be negative
  424. // when cache is full.
  425. int32_t max_contiguous_idx;
  426. // Information for an individual cell.
  427. struct llama_kv_cache_view_cell * cells;
  428. // The sequences for each cell. There will be n_seq_max items per cell.
  429. llama_seq_id * cells_sequences;
  430. };
  431. // Create an empty KV cache view. (use only for debugging purposes)
  432. LLAMA_API struct llama_kv_cache_view llama_kv_cache_view_init(const struct llama_context * ctx, int32_t n_seq_max);
  433. // Free a KV cache view. (use only for debugging purposes)
  434. LLAMA_API void llama_kv_cache_view_free(struct llama_kv_cache_view * view);
  435. // Update the KV cache view structure with the current state of the KV cache. (use only for debugging purposes)
  436. LLAMA_API void llama_kv_cache_view_update(const struct llama_context * ctx, struct llama_kv_cache_view * view);
  437. // Returns the number of tokens in the KV cache (slow, use only for debug)
  438. // If a KV cell has multiple sequences assigned to it, it will be counted multiple times
  439. LLAMA_API int32_t llama_get_kv_cache_token_count(const struct llama_context * ctx);
  440. // Returns the number of used KV cells (i.e. have at least one sequence assigned to them)
  441. LLAMA_API int32_t llama_get_kv_cache_used_cells(const struct llama_context * ctx);
  442. // Clear the KV cache - both cell info is erased and KV data is zeroed
  443. LLAMA_API void llama_kv_cache_clear(
  444. struct llama_context * ctx);
  445. // Removes all tokens that belong to the specified sequence and have positions in [p0, p1)
  446. // Returns false if a partial sequence cannot be removed. Removing a whole sequence never fails
  447. // seq_id < 0 : match any sequence
  448. // p0 < 0 : [0, p1]
  449. // p1 < 0 : [p0, inf)
  450. LLAMA_API bool llama_kv_cache_seq_rm(
  451. struct llama_context * ctx,
  452. llama_seq_id seq_id,
  453. llama_pos p0,
  454. llama_pos p1);
  455. // Copy all tokens that belong to the specified sequence to another sequence
  456. // Note that this does not allocate extra KV cache memory - it simply assigns the tokens to the new sequence
  457. // p0 < 0 : [0, p1]
  458. // p1 < 0 : [p0, inf)
  459. LLAMA_API void llama_kv_cache_seq_cp(
  460. struct llama_context * ctx,
  461. llama_seq_id seq_id_src,
  462. llama_seq_id seq_id_dst,
  463. llama_pos p0,
  464. llama_pos p1);
  465. // Removes all tokens that do not belong to the specified sequence
  466. LLAMA_API void llama_kv_cache_seq_keep(
  467. struct llama_context * ctx,
  468. llama_seq_id seq_id);
  469. // Adds relative position "delta" to all tokens that belong to the specified sequence and have positions in [p0, p1)
  470. // If the KV cache is RoPEd, the KV data is updated accordingly:
  471. // - lazily on next llama_decode()
  472. // - explicitly with llama_kv_cache_update()
  473. // p0 < 0 : [0, p1]
  474. // p1 < 0 : [p0, inf)
  475. LLAMA_API void llama_kv_cache_seq_add(
  476. struct llama_context * ctx,
  477. llama_seq_id seq_id,
  478. llama_pos p0,
  479. llama_pos p1,
  480. llama_pos delta);
  481. // Integer division of the positions by factor of `d > 1`
  482. // If the KV cache is RoPEd, the KV data is updated accordingly:
  483. // - lazily on next llama_decode()
  484. // - explicitly with llama_kv_cache_update()
  485. // p0 < 0 : [0, p1]
  486. // p1 < 0 : [p0, inf)
  487. LLAMA_API void llama_kv_cache_seq_div(
  488. struct llama_context * ctx,
  489. llama_seq_id seq_id,
  490. llama_pos p0,
  491. llama_pos p1,
  492. int d);
  493. // Returns the largest position present in the KV cache for the specified sequence
  494. LLAMA_API llama_pos llama_kv_cache_seq_pos_max(
  495. struct llama_context * ctx,
  496. llama_seq_id seq_id);
  497. // Defragment the KV cache
  498. // This will be applied:
  499. // - lazily on next llama_decode()
  500. // - explicitly with llama_kv_cache_update()
  501. LLAMA_API void llama_kv_cache_defrag(struct llama_context * ctx);
  502. // Apply the KV cache updates (such as K-shifts, defragmentation, etc.)
  503. LLAMA_API void llama_kv_cache_update(struct llama_context * ctx);
  504. //
  505. // State / sessions
  506. //
  507. // Returns the maximum size in bytes of the state (rng, logits, embedding
  508. // and kv_cache) - will often be smaller after compacting tokens
  509. LLAMA_API size_t llama_state_get_size(const struct llama_context * ctx);
  510. LLAMA_API DEPRECATED(size_t llama_get_state_size(const struct llama_context * ctx),
  511. "use llama_state_get_size instead");
  512. // Copies the state to the specified destination address.
  513. // Destination needs to have allocated enough memory.
  514. // Returns the number of bytes copied
  515. LLAMA_API size_t llama_state_get_data(
  516. struct llama_context * ctx,
  517. uint8_t * dst);
  518. LLAMA_API DEPRECATED(size_t llama_copy_state_data(
  519. struct llama_context * ctx,
  520. uint8_t * dst),
  521. "use llama_state_get_data instead");
  522. // Set the state reading from the specified address
  523. // Returns the number of bytes read
  524. LLAMA_API size_t llama_state_set_data(
  525. struct llama_context * ctx,
  526. const uint8_t * src);
  527. LLAMA_API DEPRECATED(size_t llama_set_state_data(
  528. struct llama_context * ctx,
  529. const uint8_t * src),
  530. "use llama_state_set_data instead");
  531. // Save/load session file
  532. LLAMA_API bool llama_state_load_file(
  533. struct llama_context * ctx,
  534. const char * path_session,
  535. llama_token * tokens_out,
  536. size_t n_token_capacity,
  537. size_t * n_token_count_out);
  538. LLAMA_API DEPRECATED(bool llama_load_session_file(
  539. struct llama_context * ctx,
  540. const char * path_session,
  541. llama_token * tokens_out,
  542. size_t n_token_capacity,
  543. size_t * n_token_count_out),
  544. "use llama_state_load_file instead");
  545. LLAMA_API bool llama_state_save_file(
  546. struct llama_context * ctx,
  547. const char * path_session,
  548. const llama_token * tokens,
  549. size_t n_token_count);
  550. LLAMA_API DEPRECATED(bool llama_save_session_file(
  551. struct llama_context * ctx,
  552. const char * path_session,
  553. const llama_token * tokens,
  554. size_t n_token_count),
  555. "use llama_state_save_file instead");
  556. // Get the exact size needed to copy the KV cache of a single sequence
  557. LLAMA_API size_t llama_state_seq_get_size(
  558. struct llama_context * ctx,
  559. llama_seq_id seq_id);
  560. // Copy the KV cache of a single sequence into the specified buffer
  561. LLAMA_API size_t llama_state_seq_get_data(
  562. struct llama_context * ctx,
  563. uint8_t * dst,
  564. llama_seq_id seq_id);
  565. // Copy the sequence data (originally copied with `llama_state_seq_get_data`) into the specified sequence
  566. // Returns:
  567. // - Positive: Ok
  568. // - Zero: Failed to load
  569. LLAMA_API size_t llama_state_seq_set_data(
  570. struct llama_context * ctx,
  571. const uint8_t * src,
  572. llama_seq_id dest_seq_id);
  573. LLAMA_API size_t llama_state_seq_save_file(
  574. struct llama_context * ctx,
  575. const char * filepath,
  576. llama_seq_id seq_id,
  577. const llama_token * tokens,
  578. size_t n_token_count);
  579. LLAMA_API size_t llama_state_seq_load_file(
  580. struct llama_context * ctx,
  581. const char * filepath,
  582. llama_seq_id dest_seq_id,
  583. llama_token * tokens_out,
  584. size_t n_token_capacity,
  585. size_t * n_token_count_out);
  586. //
  587. // Decoding
  588. //
  589. // Return batch for single sequence of tokens starting at pos_0
  590. //
  591. // NOTE: this is a helper function to facilitate transition to the new batch API - avoid using it
  592. //
  593. LLAMA_API struct llama_batch llama_batch_get_one(
  594. llama_token * tokens,
  595. int32_t n_tokens,
  596. llama_pos pos_0,
  597. llama_seq_id seq_id);
  598. // Allocates a batch of tokens on the heap that can hold a maximum of n_tokens
  599. // Each token can be assigned up to n_seq_max sequence ids
  600. // The batch has to be freed with llama_batch_free()
  601. // If embd != 0, llama_batch.embd will be allocated with size of n_tokens * embd * sizeof(float)
  602. // Otherwise, llama_batch.token will be allocated to store n_tokens llama_token
  603. // The rest of the llama_batch members are allocated with size n_tokens
  604. // All members are left uninitialized
  605. LLAMA_API struct llama_batch llama_batch_init(
  606. int32_t n_tokens,
  607. int32_t embd,
  608. int32_t n_seq_max);
  609. // Frees a batch of tokens allocated with llama_batch_init()
  610. LLAMA_API void llama_batch_free(struct llama_batch batch);
  611. // Positive return values does not mean a fatal error, but rather a warning.
  612. // 0 - success
  613. // 1 - could not find a KV slot for the batch (try reducing the size of the batch or increase the context)
  614. // < 0 - error
  615. LLAMA_API int32_t llama_decode(
  616. struct llama_context * ctx,
  617. struct llama_batch batch);
  618. // Set the number of threads used for decoding
  619. // n_threads is the number of threads used for generation (single token)
  620. // n_threads_batch is the number of threads used for prompt and batch processing (multiple tokens)
  621. LLAMA_API void llama_set_n_threads(struct llama_context * ctx, uint32_t n_threads, uint32_t n_threads_batch);
  622. // Set whether to use causal attention or not
  623. // If set to true, the model will only attend to the past tokens
  624. LLAMA_API void llama_set_causal_attn(struct llama_context * ctx, bool causal_attn);
  625. // Set abort callback
  626. LLAMA_API void llama_set_abort_callback(struct llama_context * ctx, ggml_abort_callback abort_callback, void * abort_callback_data);
  627. // Wait until all computations are finished
  628. // This is automatically done when using one of the functions below to obtain the computation results
  629. // and is not necessary to call it explicitly in most cases
  630. LLAMA_API void llama_synchronize(struct llama_context * ctx);
  631. // Token logits obtained from the last call to llama_decode()
  632. // The logits for which llama_batch.logits[i] != 0 are stored contiguously
  633. // in the order they have appeared in the batch.
  634. // Rows: number of tokens for which llama_batch.logits[i] != 0
  635. // Cols: n_vocab
  636. LLAMA_API float * llama_get_logits(struct llama_context * ctx);
  637. // Logits for the ith token. For positive indices, Equivalent to:
  638. // llama_get_logits(ctx) + ctx->output_ids[i]*n_vocab
  639. // Negative indicies can be used to access logits in reverse order, -1 is the last logit.
  640. // returns NULL for invalid ids.
  641. LLAMA_API float * llama_get_logits_ith(struct llama_context * ctx, int32_t i);
  642. // Get all output token embeddings.
  643. // when pooling_type == LLAMA_POOLING_TYPE_NONE or when using a generative model,
  644. // the embeddings for which llama_batch.logits[i] != 0 are stored contiguously
  645. // in the order they have appeared in the batch.
  646. // shape: [n_outputs*n_embd]
  647. // Otherwise, returns NULL.
  648. LLAMA_API float * llama_get_embeddings(struct llama_context * ctx);
  649. // Get the embeddings for the ith token. For positive indices, Equivalent to:
  650. // llama_get_embeddings(ctx) + ctx->output_ids[i]*n_embd
  651. // Negative indicies can be used to access embeddings in reverse order, -1 is the last embedding.
  652. // shape: [n_embd] (1-dimensional)
  653. // returns NULL for invalid ids.
  654. LLAMA_API float * llama_get_embeddings_ith(struct llama_context * ctx, int32_t i);
  655. // Get the embeddings for a sequence id
  656. // Returns NULL if pooling_type is LLAMA_POOLING_TYPE_NONE
  657. // shape: [n_embd] (1-dimensional)
  658. LLAMA_API float * llama_get_embeddings_seq(struct llama_context * ctx, llama_seq_id seq_id);
  659. //
  660. // Vocab
  661. //
  662. LLAMA_API const char * llama_token_get_text(const struct llama_model * model, llama_token token);
  663. LLAMA_API float llama_token_get_score(const struct llama_model * model, llama_token token);
  664. LLAMA_API enum llama_token_type llama_token_get_type(const struct llama_model * model, llama_token token);
  665. // Check if the token is supposed to end generation (end-of-generation, eg. EOS, EOT, etc.)
  666. LLAMA_API bool llama_token_is_eog(const struct llama_model * model, llama_token token);
  667. // Special tokens
  668. LLAMA_API llama_token llama_token_bos(const struct llama_model * model); // beginning-of-sentence
  669. LLAMA_API llama_token llama_token_eos(const struct llama_model * model); // end-of-sentence
  670. LLAMA_API llama_token llama_token_cls(const struct llama_model * model); // classification
  671. LLAMA_API llama_token llama_token_sep(const struct llama_model * model); // sentence separator
  672. LLAMA_API llama_token llama_token_nl (const struct llama_model * model); // next-line
  673. // Returns -1 if unknown, 1 for true or 0 for false.
  674. LLAMA_API int32_t llama_add_bos_token(const struct llama_model * model);
  675. // Returns -1 if unknown, 1 for true or 0 for false.
  676. LLAMA_API int32_t llama_add_eos_token(const struct llama_model * model);
  677. // Codellama infill tokens
  678. LLAMA_API llama_token llama_token_prefix(const struct llama_model * model); // Beginning of infill prefix
  679. LLAMA_API llama_token llama_token_middle(const struct llama_model * model); // Beginning of infill middle
  680. LLAMA_API llama_token llama_token_suffix(const struct llama_model * model); // Beginning of infill suffix
  681. LLAMA_API llama_token llama_token_eot (const struct llama_model * model); // End of infill middle
  682. //
  683. // Tokenization
  684. //
  685. /// @details Convert the provided text into tokens.
  686. /// @param tokens The tokens pointer must be large enough to hold the resulting tokens.
  687. /// @return Returns the number of tokens on success, no more than n_tokens_max
  688. /// @return Returns a negative number on failure - the number of tokens that would have been returned
  689. /// @param parse_special Allow tokenizing special and/or control tokens which otherwise are not exposed and treated
  690. /// as plaintext. Does not insert a leading space.
  691. LLAMA_API int32_t llama_tokenize(
  692. const struct llama_model * model,
  693. const char * text,
  694. int32_t text_len,
  695. llama_token * tokens,
  696. int32_t n_tokens_max,
  697. bool add_special,
  698. bool parse_special);
  699. // Token Id -> Piece.
  700. // Uses the vocabulary in the provided context.
  701. // Does not write null terminator to the buffer.
  702. // User code is responsible to remove the leading whitespace of the first non-BOS token when decoding multiple tokens.
  703. // @param special If true, special tokens are rendered in the output.
  704. LLAMA_API int32_t llama_token_to_piece(
  705. const struct llama_model * model,
  706. llama_token token,
  707. char * buf,
  708. int32_t length,
  709. bool special);
  710. /// Apply chat template. Inspired by hf apply_chat_template() on python.
  711. /// Both "model" and "custom_template" are optional, but at least one is required. "custom_template" has higher precedence than "model"
  712. /// NOTE: This function does not use a jinja parser. It only support a pre-defined list of template. See more: https://github.com/ggerganov/llama.cpp/wiki/Templates-supported-by-llama_chat_apply_template
  713. /// @param tmpl A Jinja template to use for this chat. If this is nullptr, the model’s default chat template will be used instead.
  714. /// @param chat Pointer to a list of multiple llama_chat_message
  715. /// @param n_msg Number of llama_chat_message in this chat
  716. /// @param add_ass Whether to end the prompt with the token(s) that indicate the start of an assistant message.
  717. /// @param buf A buffer to hold the output formatted prompt. The recommended alloc size is 2 * (total number of characters of all messages)
  718. /// @param length The size of the allocated buffer
  719. /// @return The total number of bytes of the formatted prompt. If is it larger than the size of buffer, you may need to re-alloc it and then re-apply the template.
  720. LLAMA_API int32_t llama_chat_apply_template(
  721. const struct llama_model * model,
  722. const char * tmpl,
  723. const struct llama_chat_message * chat,
  724. size_t n_msg,
  725. bool add_ass,
  726. char * buf,
  727. int32_t length);
  728. //
  729. // Grammar
  730. //
  731. LLAMA_API struct llama_grammar * llama_grammar_init(
  732. const llama_grammar_element ** rules,
  733. size_t n_rules,
  734. size_t start_rule_index);
  735. LLAMA_API void llama_grammar_free(struct llama_grammar * grammar);
  736. LLAMA_API struct llama_grammar * llama_grammar_copy(const struct llama_grammar * grammar);
  737. //
  738. // Sampling functions
  739. //
  740. // Sets the current rng seed.
  741. LLAMA_API void llama_set_rng_seed(struct llama_context * ctx, uint32_t seed);
  742. /// @details Repetition penalty described in CTRL academic paper https://arxiv.org/abs/1909.05858, with negative logit fix.
  743. /// @details Frequency and presence penalties described in OpenAI API https://platform.openai.com/docs/api-reference/parameter-details.
  744. LLAMA_API void llama_sample_repetition_penalties(
  745. struct llama_context * ctx,
  746. llama_token_data_array * candidates,
  747. const llama_token * last_tokens,
  748. size_t penalty_last_n,
  749. float penalty_repeat,
  750. float penalty_freq,
  751. float penalty_present);
  752. /// @details Apply classifier-free guidance to the logits as described in academic paper "Stay on topic with Classifier-Free Guidance" https://arxiv.org/abs/2306.17806
  753. /// @param logits Logits extracted from the original generation context.
  754. /// @param logits_guidance Logits extracted from a separate context from the same model. Other than a negative prompt at the beginning, it should have all generated and user input tokens copied from the main context.
  755. /// @param scale Guidance strength. 1.0f means no guidance. Higher values mean stronger guidance.
  756. LLAMA_API void llama_sample_apply_guidance(
  757. struct llama_context * ctx,
  758. float * logits,
  759. float * logits_guidance,
  760. float scale);
  761. /// @details Sorts candidate tokens by their logits in descending order and calculate probabilities based on logits.
  762. LLAMA_API void llama_sample_softmax(
  763. struct llama_context * ctx,
  764. llama_token_data_array * candidates);
  765. /// @details Top-K sampling described in academic paper "The Curious Case of Neural Text Degeneration" https://arxiv.org/abs/1904.09751
  766. LLAMA_API void llama_sample_top_k(
  767. struct llama_context * ctx,
  768. llama_token_data_array * candidates,
  769. int32_t k,
  770. size_t min_keep);
  771. /// @details Nucleus sampling described in academic paper "The Curious Case of Neural Text Degeneration" https://arxiv.org/abs/1904.09751
  772. LLAMA_API void llama_sample_top_p(
  773. struct llama_context * ctx,
  774. llama_token_data_array * candidates,
  775. float p,
  776. size_t min_keep);
  777. /// @details Minimum P sampling as described in https://github.com/ggerganov/llama.cpp/pull/3841
  778. LLAMA_API void llama_sample_min_p(
  779. struct llama_context * ctx,
  780. llama_token_data_array * candidates,
  781. float p,
  782. size_t min_keep);
  783. /// @details Tail Free Sampling described in https://www.trentonbricken.com/Tail-Free-Sampling/.
  784. LLAMA_API void llama_sample_tail_free(
  785. struct llama_context * ctx,
  786. llama_token_data_array * candidates,
  787. float z,
  788. size_t min_keep);
  789. /// @details Locally Typical Sampling implementation described in the paper https://arxiv.org/abs/2202.00666.
  790. LLAMA_API void llama_sample_typical(
  791. struct llama_context * ctx,
  792. llama_token_data_array * candidates,
  793. float p,
  794. size_t min_keep);
  795. /// @details Dynamic temperature implementation described in the paper https://arxiv.org/abs/2309.02772.
  796. LLAMA_API void llama_sample_entropy(
  797. struct llama_context * ctx,
  798. llama_token_data_array * candidates_p,
  799. float min_temp,
  800. float max_temp,
  801. float exponent_val);
  802. LLAMA_API void llama_sample_temp(
  803. struct llama_context * ctx,
  804. llama_token_data_array * candidates,
  805. float temp);
  806. /// @details Apply constraints from grammar
  807. LLAMA_API void llama_sample_grammar(
  808. struct llama_context * ctx,
  809. llama_token_data_array * candidates,
  810. const struct llama_grammar * grammar);
  811. /// @details Mirostat 1.0 algorithm described in the paper https://arxiv.org/abs/2007.14966. Uses tokens instead of words.
  812. /// @param candidates A vector of `llama_token_data` containing the candidate tokens, their probabilities (p), and log-odds (logit) for the current position in the generated text.
  813. /// @param tau The target cross-entropy (or surprise) value you want to achieve for the generated text. A higher value corresponds to more surprising or less predictable text, while a lower value corresponds to less surprising or more predictable text.
  814. /// @param eta The learning rate used to update `mu` based on the error between the target and observed surprisal of the sampled word. A larger learning rate will cause `mu` to be updated more quickly, while a smaller learning rate will result in slower updates.
  815. /// @param m The number of tokens considered in the estimation of `s_hat`. This is an arbitrary value that is used to calculate `s_hat`, which in turn helps to calculate the value of `k`. In the paper, they use `m = 100`, but you can experiment with different values to see how it affects the performance of the algorithm.
  816. /// @param mu Maximum cross-entropy. This value is initialized to be twice the target cross-entropy (`2 * tau`) and is updated in the algorithm based on the error between the target and observed surprisal.
  817. LLAMA_API llama_token llama_sample_token_mirostat(
  818. struct llama_context * ctx,
  819. llama_token_data_array * candidates,
  820. float tau,
  821. float eta,
  822. int32_t m,
  823. float * mu);
  824. /// @details Mirostat 2.0 algorithm described in the paper https://arxiv.org/abs/2007.14966. Uses tokens instead of words.
  825. /// @param candidates A vector of `llama_token_data` containing the candidate tokens, their probabilities (p), and log-odds (logit) for the current position in the generated text.
  826. /// @param tau The target cross-entropy (or surprise) value you want to achieve for the generated text. A higher value corresponds to more surprising or less predictable text, while a lower value corresponds to less surprising or more predictable text.
  827. /// @param eta The learning rate used to update `mu` based on the error between the target and observed surprisal of the sampled word. A larger learning rate will cause `mu` to be updated more quickly, while a smaller learning rate will result in slower updates.
  828. /// @param mu Maximum cross-entropy. This value is initialized to be twice the target cross-entropy (`2 * tau`) and is updated in the algorithm based on the error between the target and observed surprisal.
  829. LLAMA_API llama_token llama_sample_token_mirostat_v2(
  830. struct llama_context * ctx,
  831. llama_token_data_array * candidates,
  832. float tau,
  833. float eta,
  834. float * mu);
  835. /// @details Selects the token with the highest probability.
  836. /// Does not compute the token probabilities. Use llama_sample_softmax() instead.
  837. LLAMA_API llama_token llama_sample_token_greedy(
  838. struct llama_context * ctx,
  839. llama_token_data_array * candidates);
  840. /// @details Randomly selects a token from the candidates based on their probabilities using the RNG of ctx.
  841. LLAMA_API llama_token llama_sample_token(
  842. struct llama_context * ctx,
  843. llama_token_data_array * candidates);
  844. /// @details Accepts the sampled token into the grammar
  845. LLAMA_API void llama_grammar_accept_token(
  846. struct llama_context * ctx,
  847. struct llama_grammar * grammar,
  848. llama_token token);
  849. //
  850. // Beam search
  851. //
  852. struct llama_beam_view {
  853. const llama_token * tokens;
  854. size_t n_tokens;
  855. float p; // Cumulative beam probability (renormalized relative to all beams)
  856. bool eob; // Callback should set this to true when a beam is at end-of-beam.
  857. };
  858. // Passed to beam_search_callback function.
  859. // Whenever 0 < common_prefix_length, this number of tokens should be copied from any of the beams
  860. // (e.g. beams[0]) as they will be removed (shifted) from all beams in all subsequent callbacks.
  861. // These pointers are valid only during the synchronous callback, so should not be saved.
  862. struct llama_beams_state {
  863. struct llama_beam_view * beam_views;
  864. size_t n_beams; // Number of elements in beam_views[].
  865. size_t common_prefix_length; // Current max length of prefix tokens shared by all beams.
  866. bool last_call; // True iff this is the last callback invocation.
  867. };
  868. // Type of pointer to the beam_search_callback function.
  869. // void* callback_data is any custom data passed to llama_beam_search, that is subsequently
  870. // passed back to beam_search_callback. This avoids having to use global variables in the callback.
  871. typedef void (*llama_beam_search_callback_fn_t)(void * callback_data, struct llama_beams_state);
  872. /// @details Deterministically returns entire sentence constructed by a beam search.
  873. /// @param ctx Pointer to the llama_context.
  874. /// @param callback Invoked for each iteration of the beam_search loop, passing in beams_state.
  875. /// @param callback_data A pointer that is simply passed back to callback.
  876. /// @param n_beams Number of beams to use.
  877. /// @param n_past Number of tokens already evaluated.
  878. /// @param n_predict Maximum number of tokens to predict. EOS may occur earlier.
  879. LLAMA_API void llama_beam_search(
  880. struct llama_context * ctx,
  881. llama_beam_search_callback_fn_t callback,
  882. void * callback_data,
  883. size_t n_beams,
  884. int32_t n_past,
  885. int32_t n_predict);
  886. /// @details Build a split GGUF final path for this chunk.
  887. /// llama_split_path(split_path, sizeof(split_path), "/models/ggml-model-q4_0", 2, 4) => split_path = "/models/ggml-model-q4_0-00002-of-00004.gguf"
  888. // Returns the split_path length.
  889. LLAMA_API int llama_split_path(char * split_path, size_t maxlen, const char * path_prefix, int split_no, int split_count);
  890. /// @details Extract the path prefix from the split_path if and only if the split_no and split_count match.
  891. /// llama_split_prefix(split_prefix, 64, "/models/ggml-model-q4_0-00002-of-00004.gguf", 2, 4) => split_prefix = "/models/ggml-model-q4_0"
  892. // Returns the split_prefix length.
  893. LLAMA_API int llama_split_prefix(char * split_prefix, size_t maxlen, const char * split_path, int split_no, int split_count);
  894. // Performance information
  895. LLAMA_API struct llama_timings llama_get_timings(struct llama_context * ctx);
  896. LLAMA_API void llama_print_timings(struct llama_context * ctx);
  897. LLAMA_API void llama_reset_timings(struct llama_context * ctx);
  898. // Print system information
  899. LLAMA_API const char * llama_print_system_info(void);
  900. // Set callback for all future logging events.
  901. // If this is not called, or NULL is supplied, everything is output on stderr.
  902. LLAMA_API void llama_log_set(ggml_log_callback log_callback, void * user_data);
  903. LLAMA_API void llama_dump_timing_info_yaml(FILE * stream, const struct llama_context * ctx);
  904. #ifdef __cplusplus
  905. }
  906. #endif
  907. // Internal API to be implemented by llama.cpp and used by tests/benchmarks only
  908. #ifdef LLAMA_API_INTERNAL
  909. #include <random>
  910. #include <string>
  911. #include <vector>
  912. struct ggml_tensor;
  913. struct llama_partial_utf8 {
  914. uint32_t value; // bit value so far (unshifted)
  915. int n_remain; // num bytes remaining; -1 indicates invalid sequence
  916. };
  917. struct llama_grammar {
  918. const std::vector<std::vector<llama_grammar_element>> rules;
  919. std::vector<std::vector<const llama_grammar_element *>> stacks;
  920. // buffer for partially generated UTF-8 sequence from accepted tokens
  921. llama_partial_utf8 partial_utf8;
  922. };
  923. struct llama_grammar_candidate {
  924. size_t index;
  925. const uint32_t * code_points;
  926. llama_partial_utf8 partial_utf8;
  927. };
  928. const std::vector<std::pair<std::string, struct ggml_tensor *>> & llama_internal_get_tensor_map(
  929. struct llama_context * ctx
  930. );
  931. void llama_grammar_accept(
  932. const std::vector<std::vector<llama_grammar_element>> & rules,
  933. const std::vector<std::vector<const llama_grammar_element *>> & stacks,
  934. const uint32_t chr,
  935. std::vector<std::vector<const llama_grammar_element *>> & new_stacks);
  936. std::pair<std::vector<uint32_t>, llama_partial_utf8> decode_utf8(
  937. const std::string & src,
  938. llama_partial_utf8 partial_start);
  939. // Randomly selects a token from the candidates based on their probabilities using given std::mt19937.
  940. // This is a temporary workaround in order to fix race conditions when sampling with multiple sequences.
  941. llama_token llama_sample_token_with_rng(struct llama_context * ctx, llama_token_data_array * candidates, std::mt19937 & rng);
  942. #endif // LLAMA_API_INTERNAL
  943. #endif // LLAMA_H