mirror of
https://github.com/ggerganov/llama.cpp.git
synced 2024-12-27 03:44:35 +00:00
361 lines
12 KiB
C++
361 lines
12 KiB
C++
#include "utils.h"
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#include "llama.h"
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#include <cassert>
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#include <cinttypes>
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#include <cmath>
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#include <cstdio>
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#include <cstring>
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#include <fstream>
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#include <iostream>
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#include <string>
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#include <vector>
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#if defined (__unix__) || (defined (__APPLE__) && defined (__MACH__))
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#include <signal.h>
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#include <unistd.h>
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#elif defined (_WIN32)
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#include <signal.h>
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#endif
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#if defined (_WIN32)
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#pragma comment(lib,"kernel32.lib")
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extern "C" __declspec(dllimport) void* __stdcall GetStdHandle(unsigned long nStdHandle);
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extern "C" __declspec(dllimport) int __stdcall GetConsoleMode(void* hConsoleHandle, unsigned long* lpMode);
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extern "C" __declspec(dllimport) int __stdcall SetConsoleMode(void* hConsoleHandle, unsigned long dwMode);
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#endif
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#define ANSI_COLOR_RED "\x1b[31m"
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#define ANSI_COLOR_GREEN "\x1b[32m"
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#define ANSI_COLOR_YELLOW "\x1b[33m"
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#define ANSI_COLOR_BLUE "\x1b[34m"
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#define ANSI_COLOR_MAGENTA "\x1b[35m"
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#define ANSI_COLOR_CYAN "\x1b[36m"
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#define ANSI_COLOR_RESET "\x1b[0m"
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#define ANSI_BOLD "\x1b[1m"
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/* Keep track of current color of output, and emit ANSI code if it changes. */
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enum console_state {
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CONSOLE_STATE_DEFAULT=0,
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CONSOLE_STATE_PROMPT,
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CONSOLE_STATE_USER_INPUT
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};
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static console_state con_st = CONSOLE_STATE_DEFAULT;
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static bool con_use_color = false;
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void set_console_state(console_state new_st)
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{
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if (!con_use_color) return;
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// only emit color code if state changed
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if (new_st != con_st) {
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con_st = new_st;
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switch(con_st) {
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case CONSOLE_STATE_DEFAULT:
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printf(ANSI_COLOR_RESET);
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return;
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case CONSOLE_STATE_PROMPT:
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printf(ANSI_COLOR_YELLOW);
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return;
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case CONSOLE_STATE_USER_INPUT:
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printf(ANSI_BOLD ANSI_COLOR_GREEN);
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return;
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}
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}
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}
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static bool is_interacting = false;
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#if defined (__unix__) || (defined (__APPLE__) && defined (__MACH__)) || defined (_WIN32)
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void sigint_handler(int signo) {
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set_console_state(CONSOLE_STATE_DEFAULT);
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printf("\n"); // this also force flush stdout.
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if (signo == SIGINT) {
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if (!is_interacting) {
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is_interacting=true;
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} else {
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_exit(130);
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}
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}
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}
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#endif
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int run(llama_context * ctx, gpt_params params) {
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if (params.seed <= 0) {
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params.seed = time(NULL);
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}
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fprintf(stderr, "%s: seed = %d\n", __func__, params.seed);
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std::mt19937 rng(params.seed);
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if (params.random_prompt) {
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params.prompt = gpt_random_prompt(rng);
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}
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// save choice to use color for later
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// (note for later: this is a slightly awkward choice)
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con_use_color = params.use_color;
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// params.prompt = R"(// this function checks if the number n is prime
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//bool is_prime(int n) {)";
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// determine the required inference memory per token:
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// TODO: better way to do that
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{
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const std::vector<llama_token> tmp = { 0, 1, 2, 3 };
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llama_eval(ctx, tmp.data(), tmp.size(), 0, params.n_threads);
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}
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int n_past = 0;
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// Add a space in front of the first character to match OG llama tokenizer behavior
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params.prompt.insert(0, 1, ' ');
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// tokenize the prompt
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auto embd_inp = ::llama_tokenize(ctx, params.prompt, true);
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const int n_ctx = llama_n_ctx(ctx);
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params.n_predict = std::min(params.n_predict, n_ctx - (int) embd_inp.size());
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// prefix & suffix for instruct mode
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const auto inp_pfx = ::llama_tokenize(ctx, "\n\n### Instruction:\n\n", true);
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const auto inp_sfx = ::llama_tokenize(ctx, "\n\n### Response:\n\n", false);
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// in instruct mode, we inject a prefix and a suffix to each input by the user
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if (params.instruct) {
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params.interactive = true;
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params.antiprompt.push_back("### Instruction:\n\n");
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}
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// enable interactive mode if reverse prompt is specified
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if (params.antiprompt.size() != 0) {
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params.interactive = true;
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}
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if (params.interactive_start) {
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params.interactive = true;
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}
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fprintf(stderr, "\n");
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fprintf(stderr, "%s: prompt: '%s'\n", __func__, params.prompt.c_str());
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fprintf(stderr, "%s: number of tokens in prompt = %zu\n", __func__, embd_inp.size());
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for (int i = 0; i < (int) embd_inp.size(); i++) {
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fprintf(stderr, "%6d -> '%s'\n", embd_inp[i], llama_token_to_str(ctx, embd_inp[i]));
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}
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fprintf(stderr, "\n");
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if (params.interactive) {
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#if defined (__unix__) || (defined (__APPLE__) && defined (__MACH__))
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struct sigaction sigint_action;
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sigint_action.sa_handler = sigint_handler;
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sigemptyset (&sigint_action.sa_mask);
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sigint_action.sa_flags = 0;
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sigaction(SIGINT, &sigint_action, NULL);
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#elif defined (_WIN32)
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signal(SIGINT, sigint_handler);
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#endif
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fprintf(stderr, "%s: interactive mode on.\n", __func__);
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if(params.antiprompt.size()) {
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for (auto antiprompt : params.antiprompt) {
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fprintf(stderr, "Reverse prompt: '%s'\n", antiprompt.c_str());
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}
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}
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}
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fprintf(stderr, "sampling parameters: temp = %f, top_k = %d, top_p = %f, repeat_last_n = %i, repeat_penalty = %f\n", params.temp, params.top_k, params.top_p, params.repeat_last_n, params.repeat_penalty);
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fprintf(stderr, "\n\n");
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std::vector<llama_token> embd;
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int last_n_size = params.repeat_last_n;
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std::vector<llama_token> last_n_tokens(last_n_size);
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std::fill(last_n_tokens.begin(), last_n_tokens.end(), 0);
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if (params.interactive) {
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fprintf(stderr, "== Running in interactive mode. ==\n"
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#if defined (__unix__) || (defined (__APPLE__) && defined (__MACH__)) || defined (_WIN32)
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" - Press Ctrl+C to interject at any time.\n"
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#endif
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" - Press Return to return control to LLaMa.\n"
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" - If you want to submit another line, end your input in '\\'.\n\n");
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is_interacting = params.interactive_start;
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}
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int input_consumed = 0;
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bool input_noecho = false;
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int remaining_tokens = params.n_predict;
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#if defined (_WIN32)
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if (params.use_color) {
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// Enable ANSI colors on Windows 10+
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unsigned long dwMode = 0;
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void* hConOut = GetStdHandle((unsigned long)-11); // STD_OUTPUT_HANDLE (-11)
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if (hConOut && hConOut != (void*)-1 && GetConsoleMode(hConOut, &dwMode) && !(dwMode & 0x4)) {
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SetConsoleMode(hConOut, dwMode | 0x4); // ENABLE_VIRTUAL_TERMINAL_PROCESSING (0x4)
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}
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}
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#endif
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// the first thing we will do is to output the prompt, so set color accordingly
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set_console_state(CONSOLE_STATE_PROMPT);
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while (remaining_tokens > 0 || params.interactive) {
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// predict
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if (embd.size() > 0) {
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if (llama_eval(ctx, embd.data(), embd.size(), n_past, params.n_threads)) {
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fprintf(stderr, "%s : failed to eval\n", __func__);
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return 1;
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}
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}
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n_past += embd.size();
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embd.clear();
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if ((int) embd_inp.size() <= input_consumed) {
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// out of user input, sample next token
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const float top_k = params.top_k;
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const float top_p = params.top_p;
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const float temp = params.temp;
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const float repeat_penalty = params.repeat_penalty;
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llama_token id = 0;
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{
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auto logits = llama_get_logits(ctx);
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if (params.ignore_eos) {
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// set the logit of the eos token to zero to avoid sampling it
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//logits[logits.size() - n_vocab + EOS_TOKEN_ID] = 0;
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// TODO: this does not work of params.logits_all == true
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assert(params.perplexity == false);
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logits[llama_token_eos()] = 0;
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}
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id = llama_sample_top_p_top_k(ctx, last_n_tokens.data(), last_n_tokens.size(), top_k, top_p, temp, repeat_penalty);
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last_n_tokens.erase(last_n_tokens.begin());
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last_n_tokens.push_back(id);
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}
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// add it to the context
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embd.push_back(id);
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// echo this to console
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input_noecho = false;
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// decrement remaining sampling budget
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--remaining_tokens;
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} else {
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// some user input remains from prompt or interaction, forward it to processing
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while ((int) embd_inp.size() > input_consumed) {
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embd.push_back(embd_inp[input_consumed]);
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last_n_tokens.erase(last_n_tokens.begin());
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last_n_tokens.push_back(embd_inp[input_consumed]);
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++input_consumed;
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if ((int) embd.size() >= params.n_batch) {
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break;
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}
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}
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}
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// display text
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if (!input_noecho) {
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for (auto id : embd) {
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printf("%s", llama_token_to_str(ctx, id));
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}
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fflush(stdout);
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}
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// reset color to default if we there is no pending user input
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if (!input_noecho && (int)embd_inp.size() == input_consumed) {
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set_console_state(CONSOLE_STATE_DEFAULT);
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}
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// in interactive mode, and not currently processing queued inputs;
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// check if we should prompt the user for more
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if (params.interactive && (int) embd_inp.size() <= input_consumed) {
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// check for reverse prompt
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std::string last_output;
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for (auto id : last_n_tokens) {
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last_output += llama_token_to_str(ctx, id);
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}
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// Check if each of the reverse prompts appears at the end of the output.
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for (std::string antiprompt : params.antiprompt) {
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if (last_output.find(antiprompt.c_str(), last_output.length() - antiprompt.length(), antiprompt.length()) != std::string::npos) {
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is_interacting = true;
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break;
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}
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}
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if (is_interacting) {
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// potentially set color to indicate we are taking user input
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set_console_state(CONSOLE_STATE_USER_INPUT);
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if (params.instruct) {
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input_consumed = embd_inp.size();
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embd_inp.insert(embd_inp.end(), inp_pfx.begin(), inp_pfx.end());
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printf("\n> ");
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}
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std::string buffer;
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std::string line;
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bool another_line = true;
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do {
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std::getline(std::cin, line);
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if (line.empty() || line.back() != '\\') {
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another_line = false;
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} else {
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line.pop_back(); // Remove the continue character
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}
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buffer += line + '\n'; // Append the line to the result
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} while (another_line);
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// done taking input, reset color
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set_console_state(CONSOLE_STATE_DEFAULT);
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auto line_inp = ::llama_tokenize(ctx, buffer, false);
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embd_inp.insert(embd_inp.end(), line_inp.begin(), line_inp.end());
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if (params.instruct) {
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embd_inp.insert(embd_inp.end(), inp_sfx.begin(), inp_sfx.end());
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}
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remaining_tokens -= line_inp.size();
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input_noecho = true; // do not echo this again
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}
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is_interacting = false;
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}
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// end of text token
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if (embd.back() == llama_token_eos()) {
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if (params.interactive) {
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is_interacting = true;
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} else {
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fprintf(stderr, " [end of text]\n");
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break;
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}
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}
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// In interactive mode, respect the maximum number of tokens and drop back to user input when reached.
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if (params.interactive && remaining_tokens <= 0) {
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remaining_tokens = params.n_predict;
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is_interacting = true;
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}
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}
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#if defined (_WIN32)
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signal(SIGINT, SIG_DFL);
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#endif
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llama_print_timings(ctx);
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llama_free(ctx);
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set_console_state(CONSOLE_STATE_DEFAULT);
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return 0;
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}
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