1 files changed, 163 insertions, 0 deletions
diff --git a/src/event/MultiSocketMonitor.cxx b/src/event/MultiSocketMonitor.cxx
new file mode 100644
index 000000000..2ebad02e5
--- /dev/null
+++ b/src/event/MultiSocketMonitor.cxx
@@ -0,0 +1,163 @@
+/*
+ * Copyright (C) 2003-2013 The Music Player Daemon Project
+ * http://www.musicpd.org
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#include "config.h"
+#include "MultiSocketMonitor.hxx"
+#include "Loop.hxx"
+#include "system/fd_util.h"
+#include "gcc.h"
+
+#include <assert.h>
+
+#ifdef USE_EPOLL
+
+MultiSocketMonitor::MultiSocketMonitor(EventLoop &_loop)
+	:IdleMonitor(_loop), TimeoutMonitor(_loop), ready(false) {
+}
+
+MultiSocketMonitor::~MultiSocketMonitor()
+{
+	// TODO
+}
+
+void
+MultiSocketMonitor::Prepare()
+{
+	int timeout_ms = PrepareSockets();
+	if (timeout_ms >= 0)
+		TimeoutMonitor::Schedule(timeout_ms);
+	else
+		TimeoutMonitor::Cancel();
+
+}
+
+void
+MultiSocketMonitor::OnIdle()
+{
+	if (ready) {
+		ready = false;
+		DispatchSockets();
+
+		/* TODO: don't refresh always; require users to call
+		   InvalidateSockets() */
+		refresh = true;
+	}
+
+	if (refresh) {
+		refresh = false;
+		Prepare();
+	}
+}
+
+#else
+
+/**
+ * The vtable for our GSource implementation.  Unfortunately, we
+ * cannot declare it "const", because g_source_new() takes a non-const
+ * pointer, for whatever reason.
+ */
+static GSourceFuncs multi_socket_monitor_source_funcs = {
+	MultiSocketMonitor::Prepare,
+	MultiSocketMonitor::Check,
+	MultiSocketMonitor::Dispatch,
+	nullptr,
+	nullptr,
+	nullptr,
+};
+
+MultiSocketMonitor::MultiSocketMonitor(EventLoop &_loop)
+	:loop(_loop),
+	 source((Source *)g_source_new(&multi_socket_monitor_source_funcs,
+				       sizeof(*source))),
+	 absolute_timeout_us(-1) {
+	source->monitor = this;
+
+	g_source_attach(&source->base, loop.GetContext());
+}
+
+MultiSocketMonitor::~MultiSocketMonitor()
+{
+	g_source_destroy(&source->base);
+	g_source_unref(&source->base);
+	source = nullptr;
+}
+
+bool
+MultiSocketMonitor::Prepare(gint *timeout_r)
+{
+	int timeout_ms = *timeout_r = PrepareSockets();
+	absolute_timeout_us = timeout_ms < 0
+		? uint64_t(-1)
+		: GetTime() + uint64_t(timeout_ms) * 1000;
+
+	return false;
+}
+
+bool
+MultiSocketMonitor::Check() const
+{
+	if (GetTime() >= absolute_timeout_us)
+		return true;
+
+	for (const auto &i : fds)
+		if (i.GetReturnedEvents() != 0)
+			return true;
+
+	return false;
+}
+
+/*
+ * GSource methods
+ *
+ */
+
+gboolean
+MultiSocketMonitor::Prepare(GSource *_source, gint *timeout_r)
+{
+	Source &source = *(Source *)_source;
+	MultiSocketMonitor &monitor = *source.monitor;
+	assert(_source == &monitor.source->base);
+
+	return monitor.Prepare(timeout_r);
+}
+
+gboolean
+MultiSocketMonitor::Check(GSource *_source)
+{
+	const Source &source = *(const Source *)_source;
+	const MultiSocketMonitor &monitor = *source.monitor;
+	assert(_source == &monitor.source->base);
+
+	return monitor.Check();
+}
+
+gboolean
+MultiSocketMonitor::Dispatch(GSource *_source,
+			     gcc_unused GSourceFunc callback,
+			     gcc_unused gpointer user_data)
+{
+	Source &source = *(Source *)_source;
+	MultiSocketMonitor &monitor = *source.monitor;
+	assert(_source == &monitor.source->base);
+
+	monitor.Dispatch();
+	return true;
+}
+
+#endif