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/*
* Copyright (c) 2020, the SerenityOS developers.
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include "Engine.h"
#include <LibCore/File.h>
#include <fcntl.h>
#include <spawn.h>
#include <stdio.h>
#include <unistd.h>
Engine::~Engine()
{
if (m_pid != -1)
kill(m_pid, SIGINT);
}
Engine::Engine(StringView command)
{
int wpipefds[2];
int rpipefds[2];
if (pipe2(wpipefds, O_CLOEXEC) < 0) {
perror("pipe2");
VERIFY_NOT_REACHED();
}
if (pipe2(rpipefds, O_CLOEXEC) < 0) {
perror("pipe2");
VERIFY_NOT_REACHED();
}
posix_spawn_file_actions_t file_actions;
posix_spawn_file_actions_init(&file_actions);
posix_spawn_file_actions_adddup2(&file_actions, wpipefds[0], STDIN_FILENO);
posix_spawn_file_actions_adddup2(&file_actions, rpipefds[1], STDOUT_FILENO);
String cstr(command);
const char* argv[] = { cstr.characters(), nullptr };
if (posix_spawnp(&m_pid, cstr.characters(), &file_actions, nullptr, const_cast<char**>(argv), environ) < 0) {
perror("posix_spawnp");
VERIFY_NOT_REACHED();
}
posix_spawn_file_actions_destroy(&file_actions);
close(wpipefds[0]);
close(rpipefds[1]);
auto infile = Core::File::construct();
infile->open(rpipefds[0], Core::OpenMode::ReadOnly, Core::File::ShouldCloseFileDescriptor::Yes);
set_in(infile);
auto outfile = Core::File::construct();
outfile->open(wpipefds[1], Core::OpenMode::WriteOnly, Core::File::ShouldCloseFileDescriptor::Yes);
set_out(outfile);
send_command(Chess::UCI::UCICommand());
}
void Engine::handle_bestmove(const Chess::UCI::BestMoveCommand& command)
{
if (m_bestmove_callback)
m_bestmove_callback(command.move());
m_bestmove_callback = nullptr;
}
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