1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
|
/*
* Copyright (c) 2020, the SerenityOS developers.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "Engine.h"
#include <LibCore/File.h>
#include <fcntl.h>
#include <spawn.h>
#include <stdio.h>
#include <stdlib.h>
Engine::~Engine()
{
if (m_pid != -1)
kill(m_pid, SIGINT);
}
Engine::Engine(const StringView& command)
{
int wpipefds[2];
int rpipefds[2];
if (pipe2(wpipefds, O_CLOEXEC) < 0) {
perror("pipe2");
ASSERT_NOT_REACHED();
}
if (pipe2(rpipefds, O_CLOEXEC) < 0) {
perror("pipe2");
ASSERT_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");
ASSERT_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::IODevice::ReadOnly, Core::File::ShouldCloseFileDescriptor::Yes);
set_in(infile);
auto outfile = Core::File::construct();
outfile->open(wpipefds[1], Core::IODevice::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;
}
|
