X-Git-Url: http://git.tdb.fi/?p=libs%2Fcore.git;a=blobdiff_plain;f=source%2Fio%2Fpoll.h;fp=source%2Fio%2Fpoll.h;h=6367d8f2b301544f26953220284868d7658b22fb;hp=0000000000000000000000000000000000000000;hb=6e0fd758970bcb5bad5e3f2454b694cc4d7b4b66;hpb=b97d4e9f86e90254ab9edef7ee62a910f6333c78

diff --git a/source/io/poll.h b/source/io/poll.h
new file mode 100644
index 0000000..6367d8f
--- /dev/null
+++ b/source/io/poll.h
@@ -0,0 +1,82 @@
+#ifndef MSP_IO_POLL_H_
+#define MSP_IO_POLL_H_
+
+#ifndef WIN32
+#include <poll.h>
+#endif
+#include <list>
+#include <map>
+#include <vector>
+#include <msp/time/timedelta.h>
+#include "types.h"
+
+namespace Msp {
+namespace IO {
+
+class Base;
+
+enum PollEvent
+{
+	P_NONE = 0,
+	P_INPUT = 1,
+	P_PRIO = 2,
+	P_OUTPUT = 4,
+	P_ERROR = 8
+};
+
+inline PollEvent operator|(PollEvent e, PollEvent f)
+{ return PollEvent(static_cast<int>(e)|static_cast<int>(f)); }
+
+inline PollEvent operator&(PollEvent e, PollEvent f)
+{ return PollEvent(static_cast<int>(e)&static_cast<int>(f)); }
+
+inline PollEvent operator~(PollEvent e)
+{ return PollEvent(~static_cast<int>(e)); }
+
+
+class Poller
+{
+public:
+	struct Slot
+	{
+		Base *object;
+		PollEvent events;
+
+		Slot(Base *o, PollEvent e): object(o), events(e) { }
+	};
+
+	typedef std::list<Slot> SlotSeq;
+private:
+	typedef std::map<Base *, Slot> SlotMap;
+
+#ifdef WIN32
+	struct pollfd
+	{
+		Handle fd;
+	};
+#endif
+
+	SlotMap objects;
+	std::vector<pollfd> pfd;
+	bool pfd_dirty;
+	SlotSeq poll_result;
+
+	void rebuild_pfd();
+	int do_poll(int);
+
+public:
+	Poller();
+
+	void set_object(Base &, PollEvent);
+	int poll();
+	int poll(const Time::TimeDelta &);
+	const SlotSeq &get_result() const { return poll_result; }
+};
+
+PollEvent poll(Base &, PollEvent);
+PollEvent poll(Base &, PollEvent, const Time::TimeDelta &);
+
+} // namespace IO
+} // namespace Msp
+
+#endif