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gdaemon.h
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1//
2// Copyright (C) 2001-2024 Graeme Walker <graeme_walker@users.sourceforge.net>
3//
4// This program is free software: you can redistribute it and/or modify
5// it under the terms of the GNU General Public License as published by
6// the Free Software Foundation, either version 3 of the License, or
7// (at your option) any later version.
8//
9// This program is distributed in the hope that it will be useful,
10// but WITHOUT ANY WARRANTY; without even the implied warranty of
11// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12// GNU General Public License for more details.
13//
14// You should have received a copy of the GNU General Public License
15// along with this program. If not, see <http://www.gnu.org/licenses/>.
16// ===
17///
18/// \file gdaemon.h
19///
20
21#ifndef G_DAEMON_H
22#define G_DAEMON_H
23
24#include "gdef.h"
25#include "gexception.h"
26#include "gpidfile.h"
27#include "gpath.h"
28#include <sys/types.h>
29#include <string>
30
31 namespace G
32{
33 class Daemon ;
34}
35
36//| \class G::Daemon
37/// A static interface for daemonising the calling process. Daemonisation
38/// includes fork()ing, detaching from the controlling terminal, setting
39/// the process umask, etc. The windows implementation does nothing.
40/// \see G::Process
41///
42 class G::Daemon
43{
44 public:
45 static void detach() ;
46 ///< Detaches from the parent environment. This typically
47 ///< involves fork()ing, std::_Exit()ing the parent, and calling
48 ///< setsid() in the child. See also G::PidFile.
49
50 static void detach( const G::Path & pid_file ) ;
51 ///< Does a detach() but the calling process waits a while
52 ///< for the pid file to be created before it exits.
53
54 public:
55 Daemon() = delete ;
56
57 private:
58 static void setsid() ;
59} ;
60
61#endif
G::Daemon
A static interface for daemonising the calling process.
Definition: gdaemon.h:43
G::Daemon::detach
static void detach()
Detaches from the parent environment.
Definition: gdaemon_unix.cpp:49
G::Path
A Path object represents a file system path.
Definition: gpath.h:82
gexception.h
gpath.h
gpidfile.h
G
Low-level classes.
Definition: garg.h:36