import of enigma2

1 files changed, 64 insertions, 0 deletions

diff --git a/lib/base/message.h b/lib/base/message.h
new file mode 100644
index 00000000..6a9ff43e
--- /dev/null
+++ b/lib/base/message.h
@@ -0,0 +1,64 @@
+#ifndef __lib_base_message_h
+#define __lib_base_message_h
+
+#include <lib/base/ebase.h>
+#include <unistd.h>
+#include <lib/base/elock.h>
+
+/**
+ * \brief A generic messagepump.
+ *
+ * You can send and receive messages with this class. Internally a fifo is used,
+ * so you can use them together with a \c eMainloop.
+ */
+class eMessagePump
+{
+	int fd[2];
+	eLock content;
+	int ismt;
+public:
+	eMessagePump(int mt=0);
+	~eMessagePump();
+	int send(const void *data, int len);
+	int recv(void *data, int len); // blockierend
+	int getInputFD() const;
+	int getOutputFD() const;
+};
+
+/**
+ * \brief A messagepump with fixed-length packets.
+ *
+ * Based on \ref eMessagePump, with this class you can send and receive fixed size messages.
+ * Automatically creates a eSocketNotifier and gives you a callback.
+ */
+template<class T>
+class eFixedMessagePump: private eMessagePump, public Object
+{
+	eSocketNotifier *sn;
+	void do_recv(int)
+	{
+		T msg;
+		recv(&msg, sizeof(msg));
+		/*emit*/ recv_msg(msg);
+	}
+public:
+	Signal1<void,const T&> recv_msg;
+	void send(const T &msg)
+	{
+		eMessagePump::send(&msg, sizeof(msg));
+	}
+	eFixedMessagePump(eMainloop *context, int mt): eMessagePump(mt)
+	{
+		sn=new eSocketNotifier(context, getOutputFD(), eSocketNotifier::Read);
+		CONNECT(sn->activated, eFixedMessagePump<T>::do_recv);
+		sn->start();
+	}
+	~eFixedMessagePump()
+	{
+		delete sn;
+	}
+	void start() { sn->start(); }
+	void stop() { sn->stop(); }
+};
+
+#endif