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/*
* Copyright 2007-2017 Content Management AG
* All rights reserved.
*
* author: Max Kellermann <mk@cm4all.com>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* - Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the
* distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* FOUNDATION OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
* OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef ODBUS_PENDING_CALL_HXX
#define ODBUS_PENDING_CALL_HXX
#include <dbus/dbus.h>
#include <algorithm>
#include <stdexcept>
namespace ODBus {
class PendingCall {
DBusPendingCall *pending = nullptr;
explicit PendingCall(DBusPendingCall *_pending) noexcept
:pending(_pending) {}
public:
PendingCall() noexcept = default;
PendingCall(PendingCall &&src) noexcept
:pending(std::exchange(src.pending, nullptr)) {}
~PendingCall() noexcept {
if (pending != nullptr)
dbus_pending_call_unref(pending);
}
operator bool() const noexcept {
return pending;
}
DBusPendingCall *Get() noexcept {
return pending;
}
PendingCall &operator=(PendingCall &&src) noexcept {
std::swap(pending, src.pending);
return *this;
}
static PendingCall SendWithReply(DBusConnection *connection,
DBusMessage *message,
int timeout_milliseconds=-1) {
DBusPendingCall *pending;
if (!dbus_connection_send_with_reply(connection,
message,
&pending,
timeout_milliseconds))
throw std::runtime_error("dbus_connection_send_with_reply() failed");
if (pending == nullptr)
throw std::runtime_error("dbus_connection_send_with_reply() failed with pending=NULL");
return PendingCall(pending);
}
bool SetNotify(DBusPendingCallNotifyFunction function,
void *user_data,
DBusFreeFunction free_user_data=nullptr) noexcept {
return dbus_pending_call_set_notify(pending,
function, user_data,
free_user_data);
}
void Cancel() noexcept {
dbus_pending_call_cancel(pending);
}
void Block() noexcept {
dbus_pending_call_block(pending);
}
};
} /* namespace ODBus */
#endif