// Various helper functions and utilities

#pragma once

#include "ggml-opt.h"

#include "llama-cpp.h"

#include <set>

#include <sstream>

#include <string>

#include <string_view>

#include <vector>

#include <map>

#if defined(_WIN32) && !defined(_WIN32_WINNT)

#define _WIN32_WINNT 0x0A00

#endif

#ifdef _WIN32

#define DIRECTORY_SEPARATOR '\\'

#else

#define DIRECTORY_SEPARATOR '/'

#endif // _WIN32

#define die(msg)          do { fputs("error: " msg "\n", stderr);                exit(1); } while (0)

#define die_fmt(fmt, ...) do { fprintf(stderr, "error: " fmt "\n", __VA_ARGS__); exit(1); } while (0)

#define print_build_info() do {                                                                     \

    fprintf(stderr, "%s: build = %d (%s)\n",      __func__, LLAMA_BUILD_NUMBER, LLAMA_COMMIT);      \

    fprintf(stderr, "%s: built with %s for %s\n", __func__, LLAMA_COMPILER, LLAMA_BUILD_TARGET);    \

} while(0)

struct common_time_meas {

    common_time_meas(int64_t & t_acc, bool disable = false);

    ~common_time_meas();

    const int64_t t_start_us;

    int64_t & t_acc;

};

struct common_adapter_lora_info {

    std::string path;

    float scale;

    std::string task_name;

    std::string prompt_prefix;

    struct llama_adapter_lora * ptr;

};

using llama_tokens = std::vector<llama_token>;

// build info

extern int LLAMA_BUILD_NUMBER;

extern const char * LLAMA_COMMIT;

extern const char * LLAMA_COMPILER;

extern const char * LLAMA_BUILD_TARGET;

const static std::string build_info("b" + std::to_string(LLAMA_BUILD_NUMBER) + "-" + LLAMA_COMMIT);

struct common_control_vector_load_info;

//

// CPU utils

//

struct cpu_params {

    int      n_threads                   = -1;

    bool     cpumask[GGML_MAX_N_THREADS] = {false}; // CPU affinity mask.

    bool     mask_valid                  = false;   // Default: any CPU

    enum ggml_sched_priority  priority   = GGML_SCHED_PRIO_NORMAL;  // Scheduling prio : (0 - normal, 1 - medium, 2 - high, 3 - realtime)

    bool     strict_cpu                  = false;   // Use strict CPU placement

    uint32_t poll                        = 50;      // Polling (busywait) level (0 - no polling, 100 - mostly polling)

};

int32_t cpu_get_num_physical_cores();

int32_t cpu_get_num_math();

//

// Common params

//

enum llama_example {

    LLAMA_EXAMPLE_BATCHED,

    LLAMA_EXAMPLE_DEBUG,

    LLAMA_EXAMPLE_COMMON,

    LLAMA_EXAMPLE_SPECULATIVE,

    LLAMA_EXAMPLE_COMPLETION,

    LLAMA_EXAMPLE_CLI,

    LLAMA_EXAMPLE_EMBEDDING,

    LLAMA_EXAMPLE_PERPLEXITY,

    LLAMA_EXAMPLE_RETRIEVAL,

    LLAMA_EXAMPLE_PASSKEY,

    LLAMA_EXAMPLE_IMATRIX,

    LLAMA_EXAMPLE_BENCH,

    LLAMA_EXAMPLE_SERVER,

    LLAMA_EXAMPLE_CVECTOR_GENERATOR,

    LLAMA_EXAMPLE_EXPORT_LORA,

    LLAMA_EXAMPLE_MTMD,

    LLAMA_EXAMPLE_LOOKUP,

    LLAMA_EXAMPLE_PARALLEL,

    LLAMA_EXAMPLE_TTS,

    LLAMA_EXAMPLE_DIFFUSION,

    LLAMA_EXAMPLE_FINETUNE,

    LLAMA_EXAMPLE_FIT_PARAMS,

    LLAMA_EXAMPLE_COUNT,

};

enum common_sampler_type {

    COMMON_SAMPLER_TYPE_NONE        = 0,

    COMMON_SAMPLER_TYPE_DRY         = 1,

    COMMON_SAMPLER_TYPE_TOP_K       = 2,

    COMMON_SAMPLER_TYPE_TOP_P       = 3,

    COMMON_SAMPLER_TYPE_MIN_P       = 4,

  //COMMON_SAMPLER_TYPE_TFS_Z       = 5,

    COMMON_SAMPLER_TYPE_TYPICAL_P   = 6,

    COMMON_SAMPLER_TYPE_TEMPERATURE = 7,

    COMMON_SAMPLER_TYPE_XTC         = 8,

    COMMON_SAMPLER_TYPE_INFILL      = 9,

    COMMON_SAMPLER_TYPE_PENALTIES   = 10,

    COMMON_SAMPLER_TYPE_TOP_N_SIGMA = 11,

    COMMON_SAMPLER_TYPE_ADAPTIVE_P  = 12,

};

// dimensionality reduction methods, used by cvector-generator

enum dimre_method {

    DIMRE_METHOD_PCA,

    DIMRE_METHOD_MEAN,

};

enum common_conversation_mode {

    COMMON_CONVERSATION_MODE_DISABLED = 0,

    COMMON_CONVERSATION_MODE_ENABLED  = 1,

    COMMON_CONVERSATION_MODE_AUTO     = 2,

};

enum common_grammar_trigger_type {

    COMMON_GRAMMAR_TRIGGER_TYPE_TOKEN,

    COMMON_GRAMMAR_TRIGGER_TYPE_WORD,

    COMMON_GRAMMAR_TRIGGER_TYPE_PATTERN,

    COMMON_GRAMMAR_TRIGGER_TYPE_PATTERN_FULL,

};

struct common_grammar_trigger {

    common_grammar_trigger_type type;

    std::string value;

    llama_token token = LLAMA_TOKEN_NULL;

};

enum common_params_sampling_config : uint64_t {

    COMMON_PARAMS_SAMPLING_CONFIG_SAMPLERS        = 1 << 0,

    COMMON_PARAMS_SAMPLING_CONFIG_TOP_K           = 1 << 1,

    COMMON_PARAMS_SAMPLING_CONFIG_TOP_P           = 1 << 2,

    COMMON_PARAMS_SAMPLING_CONFIG_MIN_P           = 1 << 3,

    COMMON_PARAMS_SAMPLING_CONFIG_XTC_PROBABILITY = 1 << 4,

    COMMON_PARAMS_SAMPLING_CONFIG_XTC_THRESHOLD   = 1 << 5,

    COMMON_PARAMS_SAMPLING_CONFIG_TEMP            = 1 << 6,

    COMMON_PARAMS_SAMPLING_CONFIG_PENALTY_LAST_N  = 1 << 7,

    COMMON_PARAMS_SAMPLING_CONFIG_PENALTY_REPEAT  = 1 << 8,

    COMMON_PARAMS_SAMPLING_CONFIG_MIROSTAT        = 1 << 9,

    COMMON_PARAMS_SAMPLING_CONFIG_MIROSTAT_TAU    = 1 << 10,

    COMMON_PARAMS_SAMPLING_CONFIG_MIROSTAT_ETA    = 1 << 11,

};

enum common_speculative_type {

    COMMON_SPECULATIVE_TYPE_NONE,          // no speculative decoding

    COMMON_SPECULATIVE_TYPE_DRAFT,         // draft model

    COMMON_SPECULATIVE_TYPE_EAGLE3,        // eagle draft model

    COMMON_SPECULATIVE_TYPE_NGRAM_SIMPLE,  // simple self-speculative decoding

    COMMON_SPECULATIVE_TYPE_NGRAM_MAP_K,   // self-speculative decoding with n-gram keys only

    COMMON_SPECULATIVE_TYPE_NGRAM_MAP_K4V, // self-speculative decoding with n-gram keys and 4 m-gram values

    COMMON_SPECULATIVE_TYPE_NGRAM_MOD,

    COMMON_SPECULATIVE_TYPE_NGRAM_CACHE,   // self-speculative decoding with 3-level n-gram cache

    COMMON_SPECULATIVE_TYPE_COUNT          // number of types, unknown type

};

// sampling parameters

struct common_params_sampling {

    uint32_t seed = LLAMA_DEFAULT_SEED; // the seed used to initialize llama_sampler

    int32_t n_prev             = 64;     // number of previous tokens to remember

    int32_t n_probs            = 0;      // if greater than 0, output the probabilities of top n_probs tokens.

    int32_t min_keep           = 0;      // 0 = disabled, otherwise samplers should return at least min_keep tokens

    int32_t top_k              = 40;     // <= 0 to use vocab size

    float   top_p              = 0.95f;  // 1.0 = disabled

    float   min_p              = 0.05f;  // 0.0 = disabled

    float   xtc_probability    = 0.00f;  // 0.0 = disabled

    float   xtc_threshold      = 0.10f;  // > 0.5 disables XTC

    float   typ_p              = 1.00f;  // typical_p, 1.0 = disabled

    float   temp               = 0.80f;  // <= 0.0 to sample greedily, 0.0 to not output probabilities

    float   dynatemp_range     = 0.00f;  // 0.0 = disabled

    float   dynatemp_exponent  = 1.00f;  // controls how entropy maps to temperature in dynamic temperature sampler

    int32_t penalty_last_n     = 64;     // last n tokens to penalize (0 = disable penalty, -1 = context size)

    float   penalty_repeat     = 1.00f;  // 1.0 = disabled

    float   penalty_freq       = 0.00f;  // 0.0 = disabled

    float   penalty_present    = 0.00f;  // 0.0 = disabled

    float   dry_multiplier     = 0.0f;   // 0.0 = disabled;      DRY repetition penalty for tokens extending repetition:

    float   dry_base           = 1.75f;  // 0.0 = disabled;      multiplier * base ^ (length of sequence before token - allowed length)

    int32_t dry_allowed_length = 2;      // tokens extending repetitions beyond this receive penalty

    int32_t dry_penalty_last_n = -1;     // how many tokens to scan for repetitions (0 = disable penalty, -1 = context size)

    float   adaptive_target    = -1.0f;  // select tokens near this probability (valid range 0.0 to 1.0; negative = disabled)

    float   adaptive_decay     = 0.90f;  // EMA decay for adaptation; history ≈ 1/(1-decay) tokens (0.0 - 0.99)

    int32_t mirostat           = 0;      // 0 = disabled, 1 = mirostat, 2 = mirostat 2.0

    float   top_n_sigma        = -1.00f; // -1.0 = disabled

    float   mirostat_tau       = 5.00f;  // target entropy

    float   mirostat_eta       = 0.10f;  // learning rate

    bool    ignore_eos         = false;

    bool    no_perf            = false;  // disable performance metrics

    bool    timing_per_token   = false;

    uint64_t user_sampling_config = 0; // bitfield to track user-specified samplers

    std::vector<std::string> dry_sequence_breakers = {"\n", ":", "\"", "*"};     // default sequence breakers for DRY

    std::vector<enum common_sampler_type> samplers = {

        COMMON_SAMPLER_TYPE_PENALTIES,

        COMMON_SAMPLER_TYPE_DRY,

        COMMON_SAMPLER_TYPE_TOP_N_SIGMA,

        COMMON_SAMPLER_TYPE_TOP_K,

        COMMON_SAMPLER_TYPE_TYPICAL_P,

        COMMON_SAMPLER_TYPE_TOP_P,

        COMMON_SAMPLER_TYPE_MIN_P,

        COMMON_SAMPLER_TYPE_XTC,

        COMMON_SAMPLER_TYPE_TEMPERATURE,

    };

    std::string                         grammar; // optional BNF-like grammar to constrain sampling

    bool                                grammar_lazy = false;

    std::vector<common_grammar_trigger> grammar_triggers; // optional triggers (for lazy grammars)

    std::set<llama_token>               preserved_tokens;

    std::vector<llama_logit_bias> logit_bias;     // logit biases to apply

    std::vector<llama_logit_bias> logit_bias_eog; // pre-calculated logit biases for EOG tokens

    bool backend_sampling = false;

    bool has_logit_bias() const {

        return !logit_bias.empty();

    }

    // print the parameters into a string

    std::string print() const;

};

struct common_params_model {

    std::string path        = ""; // model local path                                       // NOLINT

    std::string url         = ""; // model url to download                                  // NOLINT

    std::string hf_repo     = ""; // HF repo                                                // NOLINT

    std::string hf_file     = ""; // HF file                                                // NOLINT

    std::string docker_repo = ""; // Docker repo                                            // NOLINT

    std::string name        = ""; // in format <user>/<model>[:<tag>] (tag is optional)     // NOLINT

};

struct common_ngram_mod;

struct common_params_speculative {

    common_speculative_type type = COMMON_SPECULATIVE_TYPE_NONE; // type of speculative decoding

    // general-purpose speculative decoding parameters

    int32_t n_max   = 16; // maximum number of tokens to draft during speculative decoding

    int32_t n_min   = 0; // minimum number of draft tokens to use for speculative decoding

    float   p_split = 0.1f; // speculative decoding split probability

    float   p_min   = 0.75f; // minimum speculative decoding probability (greedy)

    // ngram-based speculative decoding

    uint16_t ngram_size_n     = 12; // ngram size for lookup

    uint16_t ngram_size_m     = 48; // mgram size for speculative tokens

    uint16_t ngram_min_hits   =  1; // minimum hits at ngram/mgram lookup for mgram to be proposed

    std::shared_ptr<common_ngram_mod> ngram_mod;

    std::string lookup_cache_static;  // path of static ngram cache file for lookup decoding           // NOLINT

    std::string lookup_cache_dynamic; // path of dynamic ngram cache file for lookup decoding          // NOLINT

    // draft-model speculative decoding

    struct common_params_model mparams_dft;

    llama_model * model_dft = nullptr; // a llama_model that can be shared by multiple speculative contexts

    llama_context_params cparams_dft; // these are the parameters for the draft llama_context

    int32_t n_ctx        = 0;  // draft context size

    int32_t n_gpu_layers = -1; // number of layers to store in VRAM for the draft model (-1 - use default)

    ggml_type cache_type_k = GGML_TYPE_F16; // KV cache data type for the K

    ggml_type cache_type_v = GGML_TYPE_F16; // KV cache data type for the V

    struct cpu_params cpuparams;

    struct cpu_params cpuparams_batch;

    std::vector<ggml_backend_dev_t> devices; // devices to use for offloading

    std::vector<std::pair<std::string, std::string>> replacements; // main to speculative model replacements

    std::vector<llama_model_tensor_buft_override> tensor_buft_overrides;

    bool has_dft() const {

        return !mparams_dft.path.empty() || !mparams_dft.hf_repo.empty();

    }

};

struct common_params_vocoder {

    struct common_params_model model;

    std::string speaker_file = ""; // speaker file path                                      // NOLINT

    bool use_guide_tokens = false; // enable guide tokens to improve TTS accuracy            // NOLINT

};

struct common_params_diffusion {

    int32_t steps         = 128;

    bool    visual_mode   = false;

    float   eps           = 0;        // epsilon for timesteps

    int32_t block_length  = 0;        // block length for generation

    int32_t algorithm     = 4;        // default algorithm: low-confidence

    float   alg_temp      = 0.0f;     // algorithm temperature

    float   cfg_scale     = 0;        // classifier-free guidance scale

    bool    add_gumbel_noise = false; // add gumbel noise to the logits if temp > 0.0

};

// reasoning API response format (not to be confused as chat template's reasoning format)

// only used by server

enum common_reasoning_format {

    COMMON_REASONING_FORMAT_NONE,

    COMMON_REASONING_FORMAT_AUTO,            // Same as deepseek, using `message.reasoning_content`

    COMMON_REASONING_FORMAT_DEEPSEEK_LEGACY, // Extract thinking tag contents and return as `message.reasoning_content`, or leave inline in <think> tags in stream mode

    COMMON_REASONING_FORMAT_DEEPSEEK,        // Extract thinking tag contents and return as `message.reasoning_content`, including in streaming deltas.

    // do not extend this enum unless you absolutely have to

    // in most cases, use COMMON_REASONING_FORMAT_AUTO

    // see: https://github.com/ggml-org/llama.cpp/pull/15408

};

struct lr_opt {

    float    lr0          = 1e-5; // learning rate at first epoch

    float    lr_min       = -1;

    float    decay_epochs = -1;   // if >0, the learning rate starts at lr0 and decays to lr_min after this many epochs

    float    scale_epoch  = 0;

    float    wd           = 0;

    unsigned epochs       = 2;

    unsigned epoch; // set by optimizer outer (epochs) loop

    // learning rate decay - constant LR per epoch only for now

    float get_lr(float e) const;

    float get_lr() const { return get_lr(epoch); }

    // must call after arg parse, before get_lr

    void init();

};

struct ggml_opt_optimizer_params common_opt_lr_pars(void * userdata);

struct common_params {

    int32_t n_predict             =    -1; // max. number of new tokens to predict, -1 == no limit

    int32_t n_ctx                 =     0; // context size, 0 == context the model was trained with

    int32_t n_batch               =  2048; // logical batch size for prompt processing (must be >=32 to use BLAS)

    int32_t n_ubatch              =   512; // physical batch size for prompt processing (must be >=32 to use BLAS)

    int32_t n_keep                =     0; // number of tokens to keep from initial prompt

    int32_t n_chunks              =    -1; // max number of chunks to process (-1 = unlimited)

    int32_t n_parallel            =     1; // number of parallel sequences to decode

    int32_t n_sequences           =     1; // number of sequences to decode

    int32_t grp_attn_n            =     1; // group-attention factor

    int32_t grp_attn_w            =   512; // group-attention width

    int32_t n_print               =    -1; // print token count every n tokens (-1 = disabled)

    float   rope_freq_base        =  0.0f; // RoPE base frequency

    float   rope_freq_scale       =  0.0f; // RoPE frequency scaling factor

    float   yarn_ext_factor       = -1.0f; // YaRN extrapolation mix factor

    float   yarn_attn_factor      = -1.0f; // YaRN magnitude scaling factor

    float   yarn_beta_fast        = -1.0f; // YaRN low correction dim

    float   yarn_beta_slow        = -1.0f; // YaRN high correction dim

    int32_t yarn_orig_ctx         =     0; // YaRN original context length

    // offload params

    std::vector<ggml_backend_dev_t> devices; // devices to use for offloading

    int32_t n_gpu_layers       = -1;   // number of layers to store in VRAM, -1 is auto, <= -2 is all

    int32_t main_gpu           = 0;    // the GPU that is used for scratch and small tensors

    float   tensor_split[128]  = {0};  // how split tensors should be distributed across GPUs

    bool    fit_params         = true; // whether to fit unset model/context parameters to free device memory

    int32_t fit_params_min_ctx = 4096; // minimum context size to set when trying to reduce memory use

    // margin per device in bytes for fitting parameters to free memory:

    std::vector<size_t> fit_params_target = std::vector<size_t>(llama_max_devices(), 1024 * 1024*1024);

    enum llama_split_mode split_mode = LLAMA_SPLIT_MODE_LAYER; // how to split the model across GPUs

    struct cpu_params cpuparams;

    struct cpu_params cpuparams_batch;

    ggml_backend_sched_eval_callback cb_eval = nullptr;

    void * cb_eval_user_data                 = nullptr;

    ggml_numa_strategy numa = GGML_NUMA_STRATEGY_DISABLED;

    enum llama_rope_scaling_type rope_scaling_type = LLAMA_ROPE_SCALING_TYPE_UNSPECIFIED;

    enum llama_pooling_type      pooling_type      = LLAMA_POOLING_TYPE_UNSPECIFIED; // pooling type for embeddings

    enum llama_attention_type    attention_type    = LLAMA_ATTENTION_TYPE_UNSPECIFIED; // attention type for embeddings

    enum llama_flash_attn_type   flash_attn_type   = LLAMA_FLASH_ATTN_TYPE_AUTO; // whether to use Flash Attention

    struct common_params_sampling    sampling;

    struct common_params_speculative speculative;

    struct common_params_vocoder     vocoder;

    struct common_params_diffusion   diffusion;

    struct common_params_model model;

    std::set<std::string> model_alias;     // model aliases                                                 // NOLINT

    std::set<std::string> model_tags;      // model tags (informational, not used for routing)              // NOLINT

    std::string hf_token             = ""; // HF token                                                      // NOLINT

    std::string prompt               = "";                                                                  // NOLINT

    std::string system_prompt        = "";                                                                  // NOLINT

    std::string prompt_file          = ""; // store the external prompt file name                           // NOLINT

    std::string path_prompt_cache    = ""; // path to file for saving/loading prompt eval state             // NOLINT

    std::string input_prefix         = ""; // string to prefix user inputs with                             // NOLINT

    std::string input_suffix         = ""; // string to suffix user inputs with                             // NOLINT

    std::string logits_file          = ""; // file for saving *all* logits                                  // NOLINT

    // llama-debug specific options

    std::string logits_output_dir = "data"; // directory for saving logits output files                     // NOLINT

    bool        save_logits       = false;  // whether to save logits to files                              // NOLINT

    std::vector<std::string> tensor_filter; // filter tensor names for debug output (regex)                 // NOLINT

    std::vector<std::string> in_files;   // all input files

    std::vector<std::string> antiprompt; // strings upon which more user input is prompted (a.k.a. reverse prompts)

    std::vector<llama_model_kv_override> kv_overrides;

    std::vector<llama_model_tensor_buft_override> tensor_buft_overrides;

    bool lora_init_without_apply = false; // only load lora to memory, but do not apply it to ctx (user can manually apply lora later using llama_adapter_lora_apply)

    std::vector<common_adapter_lora_info> lora_adapters; // lora adapter path with user defined scale

    std::vector<common_control_vector_load_info> control_vectors; // control vector with user defined scale

    int32_t verbosity                  = 3;  // LOG_LEVEL_INFO

    int32_t control_vector_layer_start = -1; // layer range for control vector

    int32_t control_vector_layer_end   = -1; // layer range for control vector

    bool    offline                    = false;

    int32_t ppl_stride      = 0;     // stride for perplexity calculations. If left at 0, the pre-existing approach will be used.

    int32_t ppl_output_type = 0;     // = 0 -> ppl output is as usual, = 1 -> ppl output is num_tokens, ppl, one per line

                                     //                                       (which is more convenient to use for plotting)

                                     //

    bool   hellaswag        = false; // compute HellaSwag score over random tasks from datafile supplied in prompt

    size_t hellaswag_tasks  = 400;   // number of tasks to use when computing the HellaSwag score

    bool   winogrande       = false; // compute Winogrande score over random tasks from datafile supplied in prompt

    size_t winogrande_tasks = 0;     // number of tasks to use when computing the Winogrande score. If 0, all tasks will be computed

    bool   multiple_choice  = false;  // compute TruthfulQA score over random tasks from datafile supplied in prompt

    size_t multiple_choice_tasks = 0; // number of tasks to use when computing the TruthfulQA score. If 0, all tasks will be computed

    bool   kl_divergence    = false; // compute KL divergence

    bool usage             = false; // print usage

    bool completion        = false; // print source-able completion script

    bool use_color         = false; // use color to distinguish generations and inputs

    bool special           = false; // enable special token output

    bool interactive       = false; // interactive mode

    bool interactive_first = false; // wait for user input immediately

    bool prompt_cache_all  = false; // save user input and generations to prompt cache

    bool prompt_cache_ro   = false; // open the prompt cache read-only and do not update it

    bool escape            = true;  // escape "\n", "\r", "\t", "\'", "\"", and "\\"

    bool multiline_input   = false; // reverse the usage of `\`

    bool simple_io         = false; // improves compatibility with subprocesses and limited consoles

    bool cont_batching     = true;  // insert new sequences for decoding on-the-fly

    bool no_perf           = false; // disable performance metrics

    bool show_timings      = true;  // show timing information on CLI

    bool ctx_shift         = false; // context shift on infinite text generation

    bool swa_full          = false; // use full-size SWA cache (https://github.com/ggml-org/llama.cpp/pull/13194#issuecomment-2868343055)

    bool kv_unified        = false; // enable unified KV cache

    bool input_prefix_bos  = false; // prefix BOS to user inputs, preceding input_prefix

    bool use_mmap          = true;  // enable mmap to use filesystem cache

    bool use_direct_io     = false; // read from disk without buffering

    bool use_mlock         = false; // use mlock to keep model in memory

    bool verbose_prompt    = false; // print prompt tokens before generation

    bool display_prompt    = true;  // print prompt before generation

    bool no_kv_offload     = false; // disable KV offloading

    bool warmup            = true;  // warmup run

    bool check_tensors     = false; // validate tensor data

    bool no_op_offload     = false; // globally disable offload host tensor operations to device

    bool no_extra_bufts    = false; // disable extra buffer types (used for weight repacking)

    bool no_host           = false; // bypass host buffer allowing extra buffers to be used

    bool single_turn       = false; // single turn chat conversation

    ggml_type cache_type_k = GGML_TYPE_F16; // KV cache data type for the K

    ggml_type cache_type_v = GGML_TYPE_F16; // KV cache data type for the V

    common_conversation_mode conversation_mode = COMMON_CONVERSATION_MODE_AUTO;

    // multimodal models (see tools/mtmd)

    struct common_params_model mmproj;

    bool mmproj_use_gpu = true;     // use GPU for multimodal model

    bool no_mmproj = false;         // explicitly disable multimodal model

    std::vector<std::string> image; // path to image file(s)

    int image_min_tokens = -1;

    int image_max_tokens = -1;

    // finetune

    struct lr_opt lr;

    enum ggml_opt_optimizer_type optimizer = GGML_OPT_OPTIMIZER_TYPE_ADAMW;

    float val_split = 0.05f; // fraction of the data used for the validation set

    // embedding

    bool embedding         = false; // get only sentence embedding

    int32_t embd_normalize = 2;     // normalisation for embeddings (-1=none, 0=max absolute int16, 1=taxicab, 2=euclidean, >2=p-norm)

    std::string embd_out   = "";    // empty = default, "array" = [[],[]...], "json" = openai style, "json+" = same "json" + cosine similarity matrix

    std::string embd_sep   = "\n";  // separator of embeddings

    std::string cls_sep    = "\t";  // separator of classification sequences

    // server params

    int32_t port              = 8080;         // server listens on this network port

    int32_t timeout_read      = 600;          // http read timeout in seconds

    int32_t timeout_write     = timeout_read; // http write timeout in seconds

    int32_t n_threads_http    = -1;           // number of threads to process HTTP requests (TODO: support threadpool)

    int32_t n_cache_reuse     = 0;            // min chunk size to reuse from the cache via KV shifting

    bool    cache_prompt      = true;         // whether to enable prompt caching

    int32_t n_ctx_checkpoints = 8;            // max number of context checkpoints per slot

    int32_t cache_ram_mib     = 8192;         // -1 = no limit, 0 - disable, 1 = 1 MiB, etc.

    std::string hostname      = "127.0.0.1";

    std::string public_path   = "";                                                                         // NOLINT

    std::string api_prefix    = "";                                                                         // NOLINT

    std::string chat_template = "";                                                                         // NOLINT

    bool use_jinja = true;                                                                                  // NOLINT

    bool enable_chat_template = true;

    common_reasoning_format reasoning_format = COMMON_REASONING_FORMAT_DEEPSEEK;

    int reasoning_budget = -1;

    bool prefill_assistant = true; // if true, any trailing assistant message will be prefilled into the response

    int sleep_idle_seconds = -1;   // if >0, server will sleep after this many seconds of idle time

    std::vector<std::string> api_keys;

    std::string ssl_file_key  = "";                                                                         // NOLINT

    std::string ssl_file_cert = "";                                                                         // NOLINT

    std::map<std::string, std::string> default_template_kwargs;

    // webui configs

    bool webui = true;

    std::string webui_config_json;

    // "advanced" endpoints are disabled by default for better security

    bool endpoint_slots   = true;

    bool endpoint_props   = false; // only control POST requests, not GET

    bool endpoint_metrics = false;

    // router server configs

    std::string models_dir    = ""; // directory containing models for the router server

    std::string models_preset = ""; // directory containing model presets for the router server

    int models_max = 4;             // maximum number of models to load simultaneously

    bool models_autoload = true;    // automatically load models when requested via the router server

    bool log_json = false;

    std::string slot_save_path;

    std::string media_path; // path to directory for loading media files

    float slot_prompt_similarity = 0.1f;

    // batched-bench params

    bool is_pp_shared   = false;

    bool is_tg_separate = false;

    std::vector<int32_t> n_pp;

    std::vector<int32_t> n_tg;

    std::vector<int32_t> n_pl;

    // retrieval params

    std::vector<std::string> context_files; // context files to embed

    int32_t chunk_size = 64; // chunk size for context embedding

    std::string chunk_separator = "\n"; // chunk separator for context embedding

    // passkey params

    int32_t n_junk = 250; // number of times to repeat the junk text

    int32_t i_pos  = -1;  // position of the passkey in the junk text

    // imatrix params

    int32_t n_out_freq  = 10; // output the imatrix every n_out_freq iterations

    int32_t n_save_freq =  0; // save the imatrix every n_save_freq iterations

    int32_t i_chunk     =  0; // start processing from this chunk

    int8_t  imat_dat    =  0; // whether the legacy imatrix.dat format should be output (gguf <= 0 < dat)

    bool process_output  = false; // collect data for the output tensor

    bool compute_ppl     = true;  // whether to compute perplexity

    bool show_statistics = false; // show imatrix statistics per tensor

    bool parse_special   = false; // whether to parse special tokens during imatrix tokenization

    // cvector-generator params

    int n_pca_batch = 100;

    int n_pca_iterations = 1000;

    dimre_method cvector_dimre_method = DIMRE_METHOD_PCA;

    std::string cvector_positive_file = "tools/cvector-generator/positive.txt";

    std::string cvector_negative_file = "tools/cvector-generator/negative.txt";

    bool spm_infill = false; // suffix/prefix/middle pattern for infill

    // batched-bench params

    bool batched_bench_output_jsonl = false;

    // common params

    std::string out_file; // output filename for all example programs

    // optional callback for model loading progress and cancellation:

    // called with a progress value between 0.0 and 1.0.

    // return false from callback to abort model loading or true to continue

    llama_progress_callback load_progress_callback = NULL;

    void *                  load_progress_callback_user_data = NULL;

};

// call once at the start of a program if it uses libcommon

// initializes the logging system and prints info about the build

void common_init();

std::string common_params_get_system_info(const common_params & params);

bool parse_cpu_range(const std::string & range, bool(&boolmask)[GGML_MAX_N_THREADS]);

bool parse_cpu_mask(const std::string & mask, bool(&boolmask)[GGML_MAX_N_THREADS]);

void postprocess_cpu_params(cpu_params & cpuparams, const cpu_params * role_model = nullptr);

bool set_process_priority(enum ggml_sched_priority prio);

//

// String utils

//

#ifdef __GNUC__

#    if defined(__MINGW32__) && !defined(__clang__)

#        define LLAMA_COMMON_ATTRIBUTE_FORMAT(...) __attribute__((format(gnu_printf, __VA_ARGS__)))

#    else

#        define LLAMA_COMMON_ATTRIBUTE_FORMAT(...) __attribute__((format(printf, __VA_ARGS__)))

#    endif

#else

#    define LLAMA_COMMON_ATTRIBUTE_FORMAT(...)

#endif

LLAMA_COMMON_ATTRIBUTE_FORMAT(1, 2)

std::string string_format(const char * fmt, ...);

std::string string_strip(const std::string & str);

std::string string_get_sortable_timestamp();

std::string string_join(const std::vector<std::string> & values, const std::string & separator);

std::vector<std::string> string_split(const std::string & str, const std::string & delimiter);

std::string string_repeat(const std::string & str, size_t n);

void string_replace_all(std::string & s, const std::string & search, const std::string & replace);

std::string regex_escape(const std::string & s);

template<class T>

static std::vector<T> string_split(const std::string & str, char delim) {

    static_assert(!std::is_same<T, std::string>::value, "Please use the specialized version for std::string");

    std::vector<T> values;

    std::istringstream str_stream(str);

    std::string token;

    while (std::getline(str_stream, token, delim)) {

        T value;

        std::istringstream token_stream(token);

        token_stream >> value;

        values.push_back(value);

    }

    return values;

}

template<>

inline std::vector<std::string> string_split<std::string>(const std::string & str, char delim)

{

    std::vector<std::string> parts;

    size_t begin_pos = 0;

    size_t delim_pos = str.find(delim);

    while (delim_pos != std::string::npos) {

        std::string part = str.substr(begin_pos, delim_pos - begin_pos);

        parts.emplace_back(part);

        begin_pos = delim_pos + 1;

        delim_pos = str.find(delim, begin_pos);

    }

    parts.emplace_back(str.substr(begin_pos));

    return parts;

}

Unexecuted instantiation: fuzz_inference.cpp:std::__1::vector<std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >, std::__1::allocator<std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > > > string_split<std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > >(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&, char)

Unexecuted instantiation: common.cpp:std::__1::vector<std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >, std::__1::allocator<std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > > > string_split<std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > >(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&, char)

Unexecuted instantiation: log.cpp:std::__1::vector<std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >, std::__1::allocator<std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > > > string_split<std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > >(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&, char)

Unexecuted instantiation: sampling.cpp:std::__1::vector<std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >, std::__1::allocator<std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > > > string_split<std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > >(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&, char)

// remove when moving to c++20

inline bool string_starts_with(std::string_view str, std::string_view prefix) {

    return str.size() >= prefix.size() &&

           str.compare(0, prefix.size(), prefix) == 0;

}

// remove when moving to c++20

inline bool string_ends_with(std::string_view str, std::string_view suffix) {

    return str.size() >= suffix.size() &&

           str.compare(str.size() - suffix.size(), suffix.size(), suffix) == 0;

}

inline bool string_remove_suffix(std::string & str, std::string_view suffix) {

    if (string_ends_with(str, suffix)) {

        str.resize(str.size() - suffix.size());

        return true;

    }

    return false;

}

inline size_t string_find_partial_stop(std::string_view str, std::string_view stop) {

    if (!str.empty() && !stop.empty()) {

        const size_t max_len = std::min(str.size(), stop.size());

        const char last_char = str.back();

        for (size_t len = max_len; len > 0; --len) {

            if (stop[len - 1] == last_char) {

                if (string_ends_with(str, stop.substr(0, len))) {

                    return str.size() - len;

                }

            }

        }

    }

    return std::string::npos;

}

bool string_parse_kv_override(const char * data, std::vector<llama_model_kv_override> & overrides);

void string_process_escapes(std::string & input);

std::string string_from(bool value);

std::string string_from(const std::vector<int> & values);

std::string string_from(const struct llama_context * ctx, const std::vector<llama_token> & tokens);

std::string string_from(const struct llama_context * ctx, const struct llama_batch & batch);

//

// Filesystem utils

//

bool fs_validate_filename(const std::string & filename, bool allow_subdirs = false);

bool fs_create_directory_with_parents(const std::string & path);

bool fs_is_directory(const std::string & path);

std::string fs_get_cache_directory();

std::string fs_get_cache_file(const std::string & filename);

struct common_file_info {

    std::string path;

    std::string name;

    size_t      size = 0; // in bytes

    bool        is_dir = false;

};

std::vector<common_file_info> fs_list(const std::string & path, bool include_directories);

//

// TTY utils

//

// Auto-detect if colors can be enabled based on terminal and environment

bool tty_can_use_colors();

//

// Model utils

//

struct common_sampler;

// note: defines the model, context, samplers, ets. lifetimes

struct common_init_result {

    common_init_result(common_params & params);

    ~common_init_result();

    llama_model * model();

    llama_context * context();

    common_sampler * sampler(llama_seq_id seq_id);

    void reset_samplers();

    std::vector<llama_adapter_lora_ptr> & lora();

private:

    struct impl;

    std::unique_ptr<impl> pimpl;

};

using common_init_result_ptr = std::unique_ptr<common_init_result>;

common_init_result_ptr common_init_from_params(common_params & params);

struct llama_model_params     common_model_params_to_llama  (      common_params & params);

struct llama_context_params   common_context_params_to_llama(const common_params & params);

struct ggml_threadpool_params ggml_threadpool_params_from_cpu_params(const cpu_params & params);

// clear LoRA adapters from context, then apply new list of adapters

void common_set_adapter_lora(struct llama_context * ctx, std::vector<common_adapter_lora_info> & lora);

std::string                   get_model_endpoint();

//

// Batch utils

//

void common_batch_clear(struct llama_batch & batch);

void common_batch_add(

                 struct llama_batch & batch,

                        llama_token   id,

                          llama_pos   pos,

    const std::vector<llama_seq_id> & seq_ids,

                               bool   logits);

// decodes a single batch of tokens for a prompt and manages session tokens

//

// Note: We save state before the last token so that we can replay it to ensure

// compatibility with all memory types. Recurrent/hybrid models cannot remove

// tokens from memory, so this approach works across all model architectures.

bool common_prompt_batch_decode(

              struct llama_context * ctx,

    const std::vector<llama_token> & embd,

                               int & n_past,

                               int   n_batch,

                  std::string_view   state_path,

                              bool   save_state);

// replays the last token after loading state to regenerate logits

// used after loading session state to ensure the sampling context has valid logits

bool common_replay_last_token(struct llama_context * ctx, llama_token last_token, int32_t pos);

//

// Vocab utils

//

// tokenizes a string into a vector of tokens

// should work similar to Python's `tokenizer.encode`

std::vector<llama_token> common_tokenize(

  const struct llama_context * ctx,

           const std::string & text,

                        bool   add_special,

                        bool   parse_special = false);

std::vector<llama_token> common_tokenize(

    const struct llama_vocab * vocab,

           const std::string & text,

                        bool   add_special,

                        bool   parse_special = false);

// tokenizes a token into a piece, optionally renders special/control tokens

// should work similar to Python's `tokenizer.id_to_piece`

std::string common_token_to_piece(

        const struct llama_context * ctx,

                       llama_token   token,

                       bool          special = true);

std::string common_token_to_piece(

          const struct llama_vocab * vocab,

                       llama_token   token,

                       bool          special = true);

// detokenizes a vector of tokens into a string

// should work similar to Python's `tokenizer.decode`

// optionally renders special/control tokens

std::string common_detokenize(

            const struct llama_context * ctx,

        const std::vector<llama_token> & tokens,

                                  bool   special = true);

std::string common_detokenize(

              const struct llama_vocab * vocab,

        const std::vector<llama_token> & tokens,

                                  bool   special = true);

//

// Embedding utils

//

// TODO: repace embd_norm with an enum

void common_embd_normalize(const float * inp, float * out, int n, int embd_norm);

float common_embd_similarity_cos(const float * embd1, const float * embd2, int n);

//

// Control vector utils

//

struct common_control_vector_data {

    int n_embd;

    // stores data for layers [1, n_layer] where n_layer = data.size() / n_embd

    std::vector<float> data;

};

struct common_control_vector_load_info {

    float strength;

    std::string fname;

};

// Load control vectors, scale each by strength, and add them together.

// On error, returns {-1, empty}

common_control_vector_data common_control_vector_load(const std::vector<common_control_vector_load_info> & load_infos);

//

// Split utils

//

namespace {

const char * const LLM_KV_SPLIT_NO            = "split.no";

const char * const LLM_KV_SPLIT_COUNT         = "split.count";

const char * const LLM_KV_SPLIT_TENSORS_COUNT = "split.tensors.count";

}

//

// MoE utils

//

const char * const LLM_FFN_EXPS_REGEX = "\\.ffn_(up|down|gate)_(ch|)exps";

inline std::string llm_ffn_exps_block_regex(int idx) {

    return string_format("blk\\.%d%s", idx, LLM_FFN_EXPS_REGEX);

}

inline llama_model_tensor_buft_override llm_ffn_exps_cpu_override() {

    return { LLM_FFN_EXPS_REGEX, ggml_backend_cpu_buffer_type() };

}

//

// training utils

//

ggml_opt_dataset_t common_opt_dataset_init(struct llama_context * ctx, const std::vector<llama_token> & tokens, int64_t stride);

// "adamw" or "sgd" (case insensitive)

enum ggml_opt_optimizer_type common_opt_get_optimizer(const char *);