00001 #ifndef _sys_Dispatcher_h
00002 #define _sys_Dispatcher_h
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00025 #include "Poller.h"
00026 #include "Runnable.h"
00027 #include "Mutex.h"
00028
00029 #include <memory>
00030 #include <queue>
00031 #include <boost/function.hpp>
00032
00033 #include <assert.h>
00034
00035
00036 namespace qpid {
00037 namespace sys {
00038
00039 class DispatchHandleRef;
00057 class DispatchHandle : public PollerHandle {
00058 friend class DispatchHandleRef;
00059 public:
00060 typedef boost::function1<void, DispatchHandle&> Callback;
00061
00062 private:
00063 Callback readableCallback;
00064 Callback writableCallback;
00065 Callback disconnectedCallback;
00066 Poller::shared_ptr poller;
00067 Mutex stateLock;
00068 enum {
00069 IDLE, INACTIVE, ACTIVE_R, ACTIVE_W, ACTIVE_RW,
00070 DELAYED_IDLE, DELAYED_INACTIVE, DELAYED_R, DELAYED_W, DELAYED_RW,
00071 DELAYED_DELETE
00072 } state;
00073
00074 public:
00087 DispatchHandle(const IOHandle& h, Callback rCb, Callback wCb, Callback dCb) :
00088 PollerHandle(h),
00089 readableCallback(rCb),
00090 writableCallback(wCb),
00091 disconnectedCallback(dCb),
00092 state(IDLE)
00093 {}
00094
00095 ~DispatchHandle();
00096
00098 void startWatch(Poller::shared_ptr poller);
00099
00101 void rewatch();
00103 void rewatchRead();
00104
00106 void rewatchWrite();
00107
00111 void unwatch();
00113 void unwatchRead();
00115 void unwatchWrite();
00116
00118 void stopWatch();
00119
00120 protected:
00122 void doDelete();
00123
00124 private:
00125 void processEvent(Poller::EventType dir);
00126 };
00127
00128 class DispatchHandleRef {
00129 DispatchHandle* ref;
00130
00131 public:
00132 typedef boost::function1<void, DispatchHandle&> Callback;
00133 DispatchHandleRef(const IOHandle& h, Callback rCb, Callback wCb, Callback dCb) :
00134 ref(new DispatchHandle(h, rCb, wCb, dCb))
00135 {}
00136
00137 ~DispatchHandleRef() { ref->doDelete(); }
00138
00139 void startWatch(Poller::shared_ptr poller) { ref->startWatch(poller); }
00140 void rewatch() { ref->rewatch(); }
00141 void rewatchRead() { ref->rewatchRead(); }
00142 void rewatchWrite() { ref->rewatchWrite(); }
00143 void unwatch() { ref->unwatch(); }
00144 void unwatchRead() { ref->unwatchRead(); }
00145 void unwatchWrite() { ref->unwatchWrite(); }
00146 void stopWatch() { ref->stopWatch(); }
00147 };
00148
00149
00150 class Dispatcher : public Runnable {
00151 const Poller::shared_ptr poller;
00152
00153 public:
00154 Dispatcher(Poller::shared_ptr poller);
00155 ~Dispatcher();
00156
00157 void run();
00158 };
00159
00160 }}
00161
00162 #endif // _sys_Dispatcher_h