149 lines
3.3 KiB
C++
149 lines
3.3 KiB
C++
/* -*- Mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; tab-width: 40 -*- */
|
|
/* This Source Code Form is subject to the terms of the Mozilla Public
|
|
* License, v. 2.0. If a copy of the MPL was not distributed with this file,
|
|
* You can obtain one at http://mozilla.org/MPL/2.0/. */
|
|
|
|
#include "DBusWatcher.h"
|
|
#include "mozilla/Unused.h"
|
|
#include "nsThreadUtils.h"
|
|
|
|
namespace mozilla {
|
|
namespace ipc {
|
|
|
|
DBusWatcher::DBusWatcher(DBusConnection* aConnection, DBusWatch* aWatch)
|
|
: mConnection(aConnection)
|
|
, mWatch(aWatch)
|
|
{
|
|
MOZ_ASSERT(mConnection);
|
|
MOZ_ASSERT(mWatch);
|
|
}
|
|
|
|
DBusWatcher::~DBusWatcher()
|
|
{ }
|
|
|
|
DBusConnection*
|
|
DBusWatcher::GetConnection()
|
|
{
|
|
return mConnection;
|
|
}
|
|
|
|
void
|
|
DBusWatcher::StartWatching()
|
|
{
|
|
MOZ_ASSERT(!NS_IsMainThread());
|
|
|
|
auto flags = dbus_watch_get_flags(mWatch);
|
|
|
|
if (!(flags & (DBUS_WATCH_READABLE|DBUS_WATCH_WRITABLE))) {
|
|
return;
|
|
}
|
|
|
|
auto ioLoop = MessageLoopForIO::current();
|
|
|
|
auto fd = dbus_watch_get_unix_fd(mWatch);
|
|
|
|
if (flags & DBUS_WATCH_READABLE) {
|
|
ioLoop->WatchFileDescriptor(fd, true, MessageLoopForIO::WATCH_READ,
|
|
&mReadWatcher, this);
|
|
}
|
|
if (flags & DBUS_WATCH_WRITABLE) {
|
|
ioLoop->WatchFileDescriptor(fd, true, MessageLoopForIO::WATCH_WRITE,
|
|
&mWriteWatcher, this);
|
|
}
|
|
}
|
|
|
|
void
|
|
DBusWatcher::StopWatching()
|
|
{
|
|
MOZ_ASSERT(!NS_IsMainThread());
|
|
|
|
auto flags = dbus_watch_get_flags(mWatch);
|
|
|
|
if (flags & DBUS_WATCH_READABLE) {
|
|
mReadWatcher.StopWatchingFileDescriptor();
|
|
}
|
|
if (flags & DBUS_WATCH_WRITABLE) {
|
|
mWriteWatcher.StopWatchingFileDescriptor();
|
|
}
|
|
}
|
|
|
|
// DBus utility functions, used as function pointers in DBus setup
|
|
|
|
void
|
|
DBusWatcher::FreeFunction(void* aData)
|
|
{
|
|
UniquePtr<DBusWatcher> watcher(static_cast<DBusWatcher*>(aData));
|
|
}
|
|
|
|
dbus_bool_t
|
|
DBusWatcher::AddWatchFunction(DBusWatch* aWatch, void* aData)
|
|
{
|
|
MOZ_ASSERT(!NS_IsMainThread());
|
|
|
|
auto connection = static_cast<DBusConnection*>(aData);
|
|
|
|
UniquePtr<DBusWatcher> dbusWatcher =
|
|
MakeUnique<DBusWatcher>(connection, aWatch);
|
|
|
|
dbus_watch_set_data(aWatch, dbusWatcher.get(), DBusWatcher::FreeFunction);
|
|
|
|
if (dbus_watch_get_enabled(aWatch)) {
|
|
dbusWatcher->StartWatching();
|
|
}
|
|
|
|
Unused << dbusWatcher.release(); // picked up in |FreeFunction|
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
void
|
|
DBusWatcher::RemoveWatchFunction(DBusWatch* aWatch, void* aData)
|
|
{
|
|
MOZ_ASSERT(!NS_IsMainThread());
|
|
|
|
auto dbusWatcher = static_cast<DBusWatcher*>(dbus_watch_get_data(aWatch));
|
|
|
|
dbusWatcher->StopWatching();
|
|
}
|
|
|
|
void
|
|
DBusWatcher::ToggleWatchFunction(DBusWatch* aWatch, void* aData)
|
|
{
|
|
MOZ_ASSERT(!NS_IsMainThread());
|
|
|
|
auto dbusWatcher = static_cast<DBusWatcher*>(dbus_watch_get_data(aWatch));
|
|
|
|
if (dbus_watch_get_enabled(aWatch)) {
|
|
dbusWatcher->StartWatching();
|
|
} else {
|
|
dbusWatcher->StopWatching();
|
|
}
|
|
}
|
|
|
|
// I/O-loop callbacks
|
|
|
|
void
|
|
DBusWatcher::OnFileCanReadWithoutBlocking(int aFd)
|
|
{
|
|
MOZ_ASSERT(!NS_IsMainThread());
|
|
|
|
dbus_watch_handle(mWatch, DBUS_WATCH_READABLE);
|
|
|
|
DBusDispatchStatus dbusDispatchStatus;
|
|
|
|
do {
|
|
dbusDispatchStatus = dbus_connection_dispatch(mConnection);
|
|
} while (dbusDispatchStatus == DBUS_DISPATCH_DATA_REMAINS);
|
|
}
|
|
|
|
void
|
|
DBusWatcher::OnFileCanWriteWithoutBlocking(int aFd)
|
|
{
|
|
MOZ_ASSERT(!NS_IsMainThread());
|
|
|
|
dbus_watch_handle(mWatch, DBUS_WATCH_WRITABLE);
|
|
}
|
|
|
|
} // namespace ipc
|
|
} // namespace mozilla
|