- initial import

src/libs/ice/ICETime.h

@@ -0,0 +1,113 @@
+/* Copyright(C) 2007-2014 VoIP objects (voipobjects.com)
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef __ICE_TIME_H
+#define __ICE_TIME_H
+
+#include "ICEPlatform.h"
+#include "ICETypes.h"
+#ifndef _WIN32
+#   include <time.h>
+#   include <stdlib.h>
+#endif
+
+namespace ice {
+
+  class TimeoutDetector
+  {
+  public:
+    TimeoutDetector();
+    ~TimeoutDetector();
+    
+    void start();
+    void stop();
+    
+    /*! Resets the countdown. */
+    void reset();
+
+    /*! Checks if it is a time to retransmit non-answered packet
+     *  @return true if time to retransmit packet, false if not. */
+    bool isTimeToRetransmit();
+  
+    /*! Notifies timer about retransmission. */
+    void nextAttempt();
+  
+    /*! Checks if it is a time to mark the transaction timeouted.
+     *  @return true if transaction is timeouted, false if not. */
+    bool isTimeout();
+  protected:
+  
+    /// Time tracking member  
+    time_t    mTimestamp;
+
+    /// Retransmission attempt counter
+    size_t    mAttempt;
+  };
+
+  class ICEStartTimer
+  {
+  public:
+    ICEStartTimer();
+    ~ICEStartTimer();
+
+    void start(unsigned interval);
+    bool isTimeToBegin();
+    void stop();
+
+  protected:
+    unsigned  mTimestamp;
+    unsigned  mInterval;
+    bool      mEnabled;
+  };
+  
+  /*! Class intendend to schedule connectivity checks. It is simple timer which returns true from IsTimeToSend() every interval milliseconds. */
+  class ICEScheduleTimer
+  {
+  public:
+    /*! Default constructor. */
+    ICEScheduleTimer();
+    
+    /*! Destructor. */
+    ~ICEScheduleTimer();
+
+    /*! Start timer with interval in milliseconds. */
+    void start(int interval);
+    
+    /*! Check if it is a time to send next check. This method must be called in while (IsTimeToSend()) {} loop - 
+     *  as multiple checks can be scheduled for elapsed time interval. */
+    bool isTimeToSend();
+    
+    /*! Stops timer. */
+    void stop();
+    
+    /*! Returns remaining time in milliseconds. */
+    int remaining();
+    
+    /*! Returns interval time in milliseconds. */
+    int interval() const;
+    
+    /*! Sets new interval time in milliseconds. Can be called on active timer, will reschedule timeout event. */
+    void setInterval(int interval);
+    
+  protected:
+    bool      mEnabled;             /// Marks if timer is started
+    unsigned  mTimestamp;           /// Last timestamp
+    int       mTail;                /// How much checks was scheduled for elapsed time interval.
+    int       mInterval;            /// Timer interval
+  };
+
+  class ICETimeHelper
+  {
+  public:
+    static unsigned timestamp();
+    static unsigned findDelta(unsigned oldTimestamp, unsigned int newTimestamp);
+  };
+
+};
+
+
+
+
+#endif