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-rw-r--r--src/event/SocketMonitor.cxx167
1 files changed, 167 insertions, 0 deletions
diff --git a/src/event/SocketMonitor.cxx b/src/event/SocketMonitor.cxx
new file mode 100644
index 000000000..6efa69647
--- /dev/null
+++ b/src/event/SocketMonitor.cxx
@@ -0,0 +1,167 @@
+/*
+ * 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 "SocketMonitor.hxx"
+#include "Loop.hxx"
+#include "fd_util.h"
+#include "gcc.h"
+
+#include <assert.h>
+
+#ifdef WIN32
+#include <winsock2.h>
+#else
+#include <sys/types.h>
+#include <sys/socket.h>
+#endif
+
+/*
+ * GSource methods
+ *
+ */
+
+gboolean
+SocketMonitor::Prepare(gcc_unused GSource *source, gcc_unused gint *timeout_r)
+{
+ return false;
+}
+
+gboolean
+SocketMonitor::Check(GSource *_source)
+{
+ const Source &source = *(const Source *)_source;
+ const SocketMonitor &monitor = *source.monitor;
+ assert(_source == &monitor.source->base);
+
+ return monitor.Check();
+}
+
+gboolean
+SocketMonitor::Dispatch(GSource *_source,
+ gcc_unused GSourceFunc callback,
+ gcc_unused gpointer user_data)
+{
+ Source &source = *(Source *)_source;
+ SocketMonitor &monitor = *source.monitor;
+ assert(_source == &monitor.source->base);
+
+ monitor.Dispatch();
+ return true;
+}
+
+/**
+ * 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 socket_monitor_source_funcs = {
+ SocketMonitor::Prepare,
+ SocketMonitor::Check,
+ SocketMonitor::Dispatch,
+ nullptr,
+ nullptr,
+ nullptr,
+};
+
+SocketMonitor::SocketMonitor(int _fd, EventLoop &_loop)
+ :fd(-1), loop(_loop),
+ source(nullptr) {
+ assert(_fd >= 0);
+
+ Open(_fd);
+}
+
+SocketMonitor::~SocketMonitor()
+{
+ if (IsDefined())
+ Close();
+}
+
+void
+SocketMonitor::Open(int _fd)
+{
+ assert(fd < 0);
+ assert(source == nullptr);
+ assert(_fd >= 0);
+
+ fd = _fd;
+ poll = {fd, 0, 0};
+
+ source = (Source *)g_source_new(&socket_monitor_source_funcs,
+ sizeof(*source));
+ source->monitor = this;
+
+ g_source_attach(&source->base, loop.GetContext());
+ g_source_add_poll(&source->base, &poll);
+}
+
+int
+SocketMonitor::Steal()
+{
+ assert(IsDefined());
+
+ Cancel();
+
+ int result = fd;
+ fd = -1;
+
+ g_source_destroy(&source->base);
+ g_source_unref(&source->base);
+ source = nullptr;
+
+ return result;
+}
+
+void
+SocketMonitor::Close()
+{
+ close_socket(Steal());
+}
+
+SocketMonitor::ssize_t
+SocketMonitor::Read(void *data, size_t length)
+{
+ int flags = 0;
+#ifdef MSG_DONTWAIT
+ flags |= MSG_DONTWAIT;
+#endif
+
+ return recv(Get(), (char *)data, length, flags);
+}
+
+SocketMonitor::ssize_t
+SocketMonitor::Write(const void *data, size_t length)
+{
+ int flags = 0;
+#ifdef MSG_NOSIGNAL
+ flags |= MSG_NOSIGNAL;
+#endif
+#ifdef MSG_DONTWAIT
+ flags |= MSG_DONTWAIT;
+#endif
+
+ return send(Get(), (const char *)data, length, flags);
+}
+
+void
+SocketMonitor::CommitEventFlags()
+{
+ loop.WakeUp();
+}