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-rw-r--r--src/event/MultiSocketMonitor.cxx107
1 files changed, 107 insertions, 0 deletions
diff --git a/src/event/MultiSocketMonitor.cxx b/src/event/MultiSocketMonitor.cxx
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+++ b/src/event/MultiSocketMonitor.cxx
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+/*
+ * 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 "fd_util.h"
+#include "gcc.h"
+
+#include <assert.h>
+
+/**
+ * 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))) {
+ 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::Check() const
+{
+ if (CheckSockets())
+ return true;
+
+ for (const auto &i : fds)
+ if (i.revents != 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;
+}