Initial work

external/process-cpp-minimal/include/core/posix/signalable.h

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+/*
+ * Copyright © 2013 Canonical Ltd.
+ *
+ * This program is free software: you can redistribute it and/or modify it
+ * under the terms of the GNU Lesser General Public License version 3,
+ * as published by the Free Software Foundation.
+ *
+ * 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 Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Authored by: Thomas Voß <thomas.voss@canonical.com>
+ */
+
+#ifndef CORE_POSIX_SIGNALABLE_H_
+#define CORE_POSIX_SIGNALABLE_H_
+
+#include <core/posix/signal.h>
+#include <core/posix/visibility.h>
+
+#include <memory>
+#include <system_error>
+
+namespace core
+{
+namespace posix
+{
+/**
+ * @brief The Signalable class abstracts the ability of an entity to be delivered a posix signal.
+ */
+class CORE_POSIX_DLL_PUBLIC Signalable
+{
+public:
+    virtual ~Signalable() { }
+
+    /**
+     * @brief Sends a signal to this signalable object.
+     * @throws std::system_error in case of problems.
+     * @param [in] signal The signal to be sent to the process.
+     */
+    virtual void send_signal_or_throw(Signal signal);
+
+    /**
+     * @brief Sends a signal to this signalable object.
+     * @param [in] signal The signal to be sent to the process.
+     * @param [out] e Set to contain an error if an issue arises.
+     */
+    virtual void send_signal(Signal signal, std::error_code& e) noexcept(true);
+
+protected:
+    CORE_POSIX_DLL_LOCAL explicit Signalable(pid_t pid);
+
+private:
+    struct CORE_POSIX_DLL_LOCAL Private;
+    std::shared_ptr<Private> d;
+};
+}
+}
+
+#endif // CORE_POSIX_SIGNALABLE_H_