| 1 | /* |
|---|
| 2 | SPDX-FileCopyrightText: 2021 Aleix Pol Gonzalez <aleixpol@kde.org> |
|---|
| 3 | |
|---|
| 4 | SPDX-License-Identifier: LGPL-2.1-or-later |
|---|
| 5 | */ |
|---|
| 6 | |
|---|
| 7 | #ifndef KSIGNALHANDLER_H |
|---|
| 8 | #define KSIGNALHANDLER_H |
|---|
| 9 | |
|---|
| 10 | #include <QObject> |
|---|
| 11 | #include <kcoreaddons_export.h> |
|---|
| 12 | |
|---|
| 13 | class KSignalHandlerPrivate; |
|---|
| 14 | |
|---|
| 15 | /** |
|---|
| 16 | * Allows getting ANSI C signals and forward them onto the Qt eventloop. |
|---|
| 17 | * |
|---|
| 18 | * It's a singleton as it relies on static data getting defined. |
|---|
| 19 | * |
|---|
| 20 | * \code |
|---|
| 21 | * { |
|---|
| 22 | * KSignalHandler::self()->watchSignal(SIGTERM); |
|---|
| 23 | * connect(KSignalHandler::self(), &KSignalHandler::signalReceived, |
|---|
| 24 | * this, &SomeClass::handleSignal); |
|---|
| 25 | * job->start(); |
|---|
| 26 | * } |
|---|
| 27 | * \endcode |
|---|
| 28 | * |
|---|
| 29 | * @since 5.92 |
|---|
| 30 | */ |
|---|
| 31 | class KCOREADDONS_EXPORT KSignalHandler : public QObject |
|---|
| 32 | { |
|---|
| 33 | Q_OBJECT |
|---|
| 34 | public: |
|---|
| 35 | ~KSignalHandler() override; |
|---|
| 36 | |
|---|
| 37 | /** |
|---|
| 38 | * Adds @p signal to be watched for. Once the process is notified about this signal, @m signalReceived will be emitted with the same @p signal as an |
|---|
| 39 | * argument. |
|---|
| 40 | * |
|---|
| 41 | * @see signalReceived |
|---|
| 42 | */ |
|---|
| 43 | void watchSignal(int signal); |
|---|
| 44 | |
|---|
| 45 | /** |
|---|
| 46 | * Fetches an instance we can use to register our signals. |
|---|
| 47 | */ |
|---|
| 48 | static KSignalHandler *self(); |
|---|
| 49 | |
|---|
| 50 | Q_SIGNALS: |
|---|
| 51 | /** |
|---|
| 52 | * Notifies that @p signal is emitted. |
|---|
| 53 | * |
|---|
| 54 | * To catch a signal, we need to make sure it's registered using @m watchSignal. |
|---|
| 55 | * |
|---|
| 56 | * @see watchSignal |
|---|
| 57 | */ |
|---|
| 58 | void signalReceived(int signal); |
|---|
| 59 | |
|---|
| 60 | private: |
|---|
| 61 | KCOREADDONS_NO_EXPORT KSignalHandler(); |
|---|
| 62 | |
|---|
| 63 | QScopedPointer<KSignalHandlerPrivate> d; |
|---|
| 64 | }; |
|---|
| 65 | |
|---|
| 66 | #endif |
|---|
| 67 | |
|---|
