process-cpp: /build/process-cpp/src/process-cpp-3.0.1/include/core/posix/signal.h Source File

process-cpp 3.0.0 A simple convenience library for handling processes in C++11.

signal.h
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1 /*
2 * Copyright © 2013 Canonical Ltd.
3 *
4 * This program is free software: you can redistribute it and/or modify it
5 * under the terms of the GNU Lesser General Public License version 3,
6 * as published by the Free Software Foundation.
7 *
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 * GNU Lesser General Public License for more details.
12 *
13 * You should have received a copy of the GNU Lesser General Public License
14 * along with this program. If not, see <http://www.gnu.org/licenses/>.
15 *
16 * Authored by: Thomas Voß <thomas.voss@canonical.com>
17 */
18
19 #ifndef CORE_POSIX_SIGNAL_H_
20 #define CORE_POSIX_SIGNAL_H_
21
22 #include <core/posix/visibility.h>
23
24 #include <core/signal.h>
25
26 #include <signal.h>
27
28 #include <initializer_list>
29 #include <memory>
30
31 namespace core
32 {
33 namespace posix
34 {
38 enum class Signal
39 {
40 unknown = 0,
41 sig_hup = SIGHUP,
42 sig_int = SIGINT,
43 sig_quit = SIGQUIT,
44 sig_ill = SIGILL,
45 sig_abrt = SIGABRT,
46 sig_fpe = SIGFPE,
47 sig_kill = SIGKILL,
48 sig_segv = SIGSEGV,
49 sig_pipe = SIGPIPE,
50 sig_alrm = SIGALRM,
51 sig_term = SIGTERM,
52 sig_usr1 = SIGUSR1,
53 sig_usr2 = SIGUSR2,
54 sig_chld = SIGCHLD,
55 sig_cont = SIGCONT,
56 sig_stop = SIGSTOP,
57 sig_tstp = SIGTSTP,
58 sig_ttin = SIGTTIN,
59 sig_ttou = SIGTTOU
60 };
61
65 class CORE_POSIX_DLL_PUBLIC SignalTrap
66 {
67 public:
68 SignalTrap(const SignalTrap&) = delete;
69 virtual ~SignalTrap() = default;
70
71 SignalTrap& operator=(const SignalTrap&) = delete;
72 bool operator==(const SignalTrap&) const = delete;
73
77 virtual bool has(Signal signal) = 0;
78
83 virtual void run() = 0;
84
88 virtual void stop() = 0;
89
93 virtual core::Signal<Signal>& signal_raised() = 0;
94
95 protected:
96 SignalTrap() = default;
97 };
98
102 CORE_POSIX_DLL_PUBLIC
103 std::shared_ptr<SignalTrap> trap_signals_for_process(
104 std::initializer_list<core::posix::Signal> blocked_signals);
105
110 CORE_POSIX_DLL_PUBLIC
111 std::shared_ptr<SignalTrap> trap_signals_for_all_subsequent_threads(
112 std::initializer_list<core::posix::Signal> blocked_signals);
113
114 }
115 }
116
117 #endif
core::posix::SignalTrap::operator==
bool operator==(const SignalTrap &) const =delete
visibility.h
core::posix::SignalTrap::run
virtual void run()=0
Starts observation of incoming signals, relaying them via signal_raised(). The call blocks until stop...
CORE_POSIX_DLL_PUBLIC
#define CORE_POSIX_DLL_PUBLIC
Definition: visibility.h:26
core::posix::trap_signals_for_process
CORE_POSIX_DLL_PUBLIC std::shared_ptr< SignalTrap > trap_signals_for_process(std::initializer_list< core::posix::Signal > blocked_signals)
Traps the specified signals for the entire process.
Definition: signal.cpp:202
core::posix::SignalTrap::~SignalTrap
virtual ~SignalTrap()=default
core::posix::Signal::unknown
@ unknown
core::posix::SignalTrap::SignalTrap
SignalTrap()=default
core::posix::SignalTrap::operator=
SignalTrap & operator=(const SignalTrap &)=delete
core::posix::Signal
Signal
The Signal enum collects the most common POSIX signals.
Definition: signal.h:39
core
Definition: child_process.h:32
core::posix::SignalTrap
The SignalTrap class encapsulates functionality to trap and handle signals.
Definition: signal.h:66
signal.h
core::posix::SignalTrap::signal_raised
virtual core::Signal< Signal > & signal_raised()=0
Emitted whenever a trapped signal is raised by the operating system.
core::posix::SignalTrap::stop
virtual void stop()=0
Stops execution of the signal trap.
core::posix::SignalTrap::SignalTrap
SignalTrap(const SignalTrap &)=delete
core::posix::SignalTrap::has
virtual bool has(Signal signal)=0
Returns true if the given signal is trapped by this instance.
core::posix::trap_signals_for_all_subsequent_threads
CORE_POSIX_DLL_PUBLIC std::shared_ptr< SignalTrap > trap_signals_for_all_subsequent_threads(std::initializer_list< core::posix::Signal > blocked_signals)
Traps the specified signals for the current thread, and inherits the respective signal mask to all ch...
Definition: signal.cpp:210