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#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <pthread.h>
#include "bitboard.h"
#include "engine/moves.h"
#include "fen.h"
#include "fcntl.h"
#include "uci.h"
#include "ipc.h"
// TODO: implement break conditions from the go command
struct thread_args {
int id;
int stop;
position_t position;
struct engine_message *message;
};
void *engine_thread(void *_args) {
struct thread_args *args = (struct thread_args*)_args;
int k = 0;
while (k < 10) {
if (args->stop) continue;
struct engine_message *message = args->message;
k++;
message->depth = 69;
message->multipv = args->id;
message->pv = comm_moves_init();
add_comm_move(&message->pv, (struct uci_move) { 14, 24 });
if (k == 10) {
message->best_move = (struct uci_move) { 12, 24 };
message->ponder = (struct uci_move) { 42, 54 };
}
message->next = malloc(sizeof(struct engine_message*));
message->ready = 1;
args->message = message->next;
}
}
struct threads {
pthread_t *threads;
struct thread_args* args;
engine_messages *engine_messages;
size_t count;
size_t capacity;
position_t sharing_position;
};
void increase_threads(struct threads *threads, size_t change) {
if (threads->count + change > threads->capacity) {
threads->capacity = threads->count + change + 16; // TODO: maybe round it to the upper power of 2
}
threads->threads = threads->threads == NULL
? malloc(sizeof(*threads->threads) * threads->capacity)
: realloc(threads->threads, sizeof(*threads->threads) * threads->capacity);
threads->args = threads->args == NULL
? malloc(sizeof(*threads->args) * threads->capacity)
: realloc(threads->args, sizeof(*threads->args) * threads->capacity);
threads->engine_messages->data = threads->engine_messages->data == NULL
? malloc(sizeof(*threads->engine_messages->data) * threads->capacity)
: realloc(
threads->engine_messages->data,
sizeof(*threads->engine_messages->data) * threads->capacity
);
for (int i = threads->count; i < threads->count + change; i++) {
threads->engine_messages->data[i] = malloc(sizeof(struct engine_message));
threads->engine_messages->data[i]->ready = 0;
threads->args[i] = (struct thread_args) {
i,
0,
threads->sharing_position,
threads->engine_messages->data[i],
};
pthread_create(
threads->threads + i,
NULL,
&engine_thread,
(void*)(threads->args + i)
);
}
threads->count += change;
threads->engine_messages->count = threads->count;
}
void decrease_threads(struct threads *threads, size_t change) {
for (int i = 0; i < change; i++) {
free(threads->engine_messages->data[threads->count - i - 1]);
pthread_cancel(threads->threads[threads->count - i - 1]);
}
threads->count -= change;
threads->engine_messages->count = threads->count;
}
void set_threads(struct threads *threads, size_t new_size) {
if (new_size > threads->count) {
increase_threads(threads, new_size - threads->count);
} else {
decrease_threads(threads, threads->count - new_size);
}
}
// TODO: someday fix that some structs have typedef, some dont
int main(int argc, char** argv) {
comms *comms = malloc(sizeof(*comms));
comms->engine_messages = malloc(sizeof(*comms->engine_messages));
comms->uci_state_initialized = 0;
pthread_t uci_thread;
pthread_create(&uci_thread, NULL, &uci, (void*)comms);
while (atomic_load(&comms->uci_state_initialized) == 0);
comms->state.quit = 0;
struct threads engine_threads = {0};
engine_threads.engine_messages = comms->engine_messages;
int initialized = 0;
while (1) {
if (atomic_load(&comms->state.quit)) break;
if (!atomic_load(&comms->state.go)) continue;
if (initialized == 0) {
engine_threads.sharing_position = comms->state.position;
set_threads(&engine_threads, comms->state.threads);
initialized = 1;
}
}
set_threads(&engine_threads, 0);
free(engine_threads.threads);
free(engine_threads.args);
free(comms->engine_messages);
free(comms->engine_messages->data);
free(comms);
return 0;
}
#include "engine/moves.c"
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