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
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
|
/*
* Copyright (C) 2003-2015 The Music Player Daemon Project
* http://www.musicpd.org
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "config.h"
#include "Main.hxx"
#ifdef WIN32
#include "Compiler.h"
#include "GlobalEvents.hxx"
#include "system/FatalError.hxx"
#include <cstdlib>
#include <atomic>
#include <windows.h>
#include <tchar.h>
static int service_argc;
static char **service_argv;
static TCHAR service_name[] = _T("");
static std::atomic_bool running;
static SERVICE_STATUS_HANDLE service_handle;
static void WINAPI
service_main(DWORD argc, LPTSTR argv[]);
static constexpr SERVICE_TABLE_ENTRY service_registry[] = {
{service_name, service_main},
{nullptr, nullptr}
};
static void
service_notify_status(DWORD status_code)
{
SERVICE_STATUS current_status;
current_status.dwServiceType = SERVICE_WIN32_OWN_PROCESS;
current_status.dwControlsAccepted = status_code == SERVICE_START_PENDING
? 0
: SERVICE_ACCEPT_SHUTDOWN | SERVICE_ACCEPT_STOP;
current_status.dwCurrentState = status_code;
current_status.dwWin32ExitCode = NO_ERROR;
current_status.dwCheckPoint = 0;
current_status.dwWaitHint = 1000;
SetServiceStatus(service_handle, ¤t_status);
}
static DWORD WINAPI
service_dispatcher(gcc_unused DWORD control, gcc_unused DWORD event_type,
gcc_unused void *event_data, gcc_unused void *context)
{
switch (control) {
case SERVICE_CONTROL_SHUTDOWN:
case SERVICE_CONTROL_STOP:
GlobalEvents::Emit(GlobalEvents::SHUTDOWN);
return NO_ERROR;
default:
return NO_ERROR;
}
}
static void WINAPI
service_main(gcc_unused DWORD argc, gcc_unused LPTSTR argv[])
{
service_handle =
RegisterServiceCtrlHandlerEx(service_name,
service_dispatcher, nullptr);
if (service_handle == 0)
FatalSystemError("RegisterServiceCtrlHandlerEx() failed");
service_notify_status(SERVICE_START_PENDING);
mpd_main(service_argc, service_argv);
service_notify_status(SERVICE_STOPPED);
}
static BOOL WINAPI
console_handler(DWORD event)
{
switch (event) {
case CTRL_C_EVENT:
case CTRL_CLOSE_EVENT:
if (running.load()) {
// Recent msdn docs that process is terminated
// if this function returns TRUE.
// We initiate correct shutdown sequence (if possible).
// Once main() returns CRT will terminate our process
// regardless our thread is still active.
// If this did not happen within 3 seconds
// let's shutdown anyway.
GlobalEvents::Emit(GlobalEvents::SHUTDOWN);
// Under debugger it's better to wait indefinitely
// to allow debugging of shutdown code.
Sleep(IsDebuggerPresent() ? INFINITE : 3000);
}
// If we're not running main loop there is no chance for
// clean shutdown.
std::exit(EXIT_FAILURE);
return TRUE;
default:
return FALSE;
}
}
int win32_main(int argc, char *argv[])
{
service_argc = argc;
service_argv = argv;
if (StartServiceCtrlDispatcher(service_registry))
return 0; /* run as service successefully */
const DWORD error_code = GetLastError();
if (error_code == ERROR_FAILED_SERVICE_CONTROLLER_CONNECT) {
/* running as console app */
running.store(false);
SetConsoleTitle(_T("Music Player Daemon"));
SetConsoleCtrlHandler(console_handler, TRUE);
return mpd_main(argc, argv);
}
FatalSystemError("StartServiceCtrlDispatcher() failed", error_code);
}
void win32_app_started()
{
if (service_handle != 0)
service_notify_status(SERVICE_RUNNING);
else
running.store(true);
}
void win32_app_stopping()
{
if (service_handle != 0)
service_notify_status(SERVICE_STOP_PENDING);
else
running.store(false);
}
#endif
|
