dataflow_cpp: fixed memory leaks

dataflow_cpp/include/embb/dataflow/internal/in.h

@@ -51,6 +51,12 @@ class In {
 
   In() : values_(NULL), connected_(false), slices_(0) {}
 
+  ~In() {
+    if (NULL != values_) {
+      embb::base::Allocation::Free(values_);
+    }
+  }
+
   SignalType const & GetSignal(int clock) const {
     return values_[clock % slices_];
   }

dataflow_cpp/include/embb/dataflow/internal/inputs.h

@@ -67,9 +67,14 @@ class Inputs<T1, embb::base::internal::Nil, embb::base::internal::Nil,
     embb::base::internal::Nil>
   , public ClockListener {
  public:
-  Inputs() {
+  Inputs() : count_(NULL) {
     test_count_ = 1;
   }
+  ~Inputs() {
+    if (NULL != count_) {
+      embb::base::Allocation::Free(count_);
+    }
+  }
   void SetListener(ClockListener * listener) {
     listener_ = listener;
     this->template Get<0>().SetListener(this);
@@ -122,9 +127,14 @@ class Inputs<T1, T2, embb::base::internal::Nil,
     embb::base::internal::Nil, embb::base::internal::Nil>
   , public ClockListener {
  public:
-  Inputs() {
+  Inputs() : count_(NULL) {
     test_count_ = 2;
   }
+  ~Inputs() {
+    if (NULL != count_) {
+      embb::base::Allocation::Free(count_);
+    }
+  }
   void SetListener(ClockListener * listener) {
     listener_ = listener;
     this->template Get<0>().SetListener(this);
@@ -181,9 +191,14 @@ class Inputs<T1, T2, T3, embb::base::internal::Nil,
     embb::base::internal::Nil, embb::base::internal::Nil>
   , public ClockListener {
  public:
-  Inputs() {
+  Inputs() : count_(NULL) {
     test_count_ = 3;
   }
+  ~Inputs() {
+    if (NULL != count_) {
+      embb::base::Allocation::Free(count_);
+    }
+  }
   void SetListener(ClockListener * listener) {
     listener_ = listener;
     this->template Get<0>().SetListener(this);
@@ -243,9 +258,14 @@ class Inputs<T1, T2, T3, T4, embb::base::internal::Nil>
       In<T4>, embb::base::internal::Nil>
   , public ClockListener {
  public:
-  Inputs() {
+  Inputs() : count_(NULL) {
     test_count_ = 4;
   }
+  ~Inputs() {
+    if (NULL != count_) {
+      embb::base::Allocation::Free(count_);
+    }
+  }
   void SetListener(ClockListener * listener) {
     listener_ = listener;
     this->template Get<0>().SetListener(this);
@@ -310,9 +330,14 @@ class Inputs
       In<T4>, In<T5> >
   , public ClockListener {
  public:
-  Inputs() {
+  Inputs() : count_(NULL) {
     test_count_ = 5;
   }
+  ~Inputs() {
+    if (NULL != count_) {
+      embb::base::Allocation::Free(count_);
+    }
+  }
   void SetListener(ClockListener * listener) {
     listener_ = listener;
     this->template Get<0>().SetListener(this);

dataflow_cpp/include/embb/dataflow/internal/process.h

@@ -55,6 +55,7 @@ class Process< Serial, Inputs<I1, I2, I3, I4, I5>,
 
   explicit Process(FunctionType function)
     : executor_(function)
+    , action_(NULL)
     , slices_(0) {
     next_clock_ = 0;
     queued_clock_ = 0;
@@ -67,6 +68,12 @@ class Process< Serial, Inputs<I1, I2, I3, I4, I5>,
     inputs_.SetListener(this);
   }
 
+  ~Process() {
+    if (NULL != action_) {
+      embb::base::Allocation::Free(action_);
+    }
+  }
+
   virtual bool HasInputs() const {
     return inputs_.Size() > 0;
   }

dataflow_cpp/include/embb/dataflow/internal/sink.h

@@ -49,13 +49,20 @@ class Sink< Inputs<I1, I2, I3, I4, I5> >
   typedef typename ExecutorType::FunctionType FunctionType;
 
   explicit Sink(FunctionType function)
-    : executor_(function) {
+    : executor_(function)
+    , action_(NULL) {
     next_clock_ = 0;
     queued_clock_ = 0;
     queue_id_ = GetNextProcessID();
     inputs_.SetListener(this);
   }
 
+  ~Sink() {
+    if (NULL != action_) {
+      embb::base::Allocation::Free(action_);
+    }
+  }
+
   void SetListener(ClockListener * listener) {
     listener_ = listener;
   }

dataflow_cpp/include/embb/dataflow/network.h

@@ -52,10 +52,8 @@ namespace dataflow {
 /**
  * Represents a set of processes, that are connected by communication channels.
  *
- * \tparam Slices Number of concurrently processed tokens.
  * \ingroup CPP_DATAFLOW
  */
-template <int Slices>
 class Network {
  public:
   /**
@@ -662,6 +660,14 @@ class Network {
   void AddSource(ConstantSource<Type> & source);
 
   /**
+   * Builds the network for usage with \c slices concurrent tokens. This
+   * function needs to be called after adding all sources and before
+   * executing the network.
+   * \param slices Number of concurrent tokens allowed in the network.
+   */
+  void Make(int slices);
+
+  /**
    * Executes the network until one of the the sources returns \c false.
    */
   void operator () ();
@@ -671,7 +677,14 @@ class Network {
 
 class Network : public internal::ClockListener {
  public:
-  Network() {}
+  Network() : sched_(NULL) {}
+
+  ~Network() {
+    if (NULL != sched_) {
+      embb::base::Allocation::Delete<internal::Scheduler>(sched_);
+      embb::base::Allocation::Free(sink_counter_);
+    }
+  }
 
   template <typename T1, typename T2 = embb::base::internal::Nil,
     typename T3 = embb::base::internal::Nil,
@@ -799,16 +812,13 @@ class Network : public internal::ClockListener {
     sources_.push_back(&source);
   }
 
-  void operator () (int slices) {
+  void Make(int slices) {
     slices_ = slices;
-
-    internal::SchedulerSequential sched_seq;
-    internal::SchedulerMTAPI sched_mtapi(slices_);
-    internal::Scheduler * sched = &sched_mtapi;
+    sched_ = embb::base::Allocation::New<internal::SchedulerMTAPI>(slices_);
 
     internal::InitData init_data;
     init_data.slices = slices_;
-    init_data.sched = sched;
+    init_data.sched = sched_;
     init_data.sink_listener = this;
 
     sink_counter_ = reinterpret_cast<embb::base::Atomic<int>*>(
@@ -825,12 +835,18 @@ class Network : public internal::ClockListener {
     for (int ii = 0; ii < slices_; ii++) {
       sink_counter_[ii] = 0;
     }
+  }
+
+  void operator () () {
+    if (NULL == sched_) {
+      throw embb::base::ErrorException("Network was not properly prepared");
+    }
 
     int clock = 0;
     while (clock >= 0) {
       const int idx = clock % slices_;
       while (sink_counter_[idx] > 0) embb::base::Thread::CurrentYield();
-      sched->WaitForSlice(idx);
+      sched_->WaitForSlice(idx);
       if (!SpawnClock(clock))
         break;
       clock++;
@@ -841,7 +857,7 @@ class Network : public internal::ClockListener {
     for (; ii < clock; ii++) {
       const int idx = ii % slices_;
       while (sink_counter_[idx] > 0) embb::base::Thread::CurrentYield();
-      sched->WaitForSlice(idx);
+      sched_->WaitForSlice(idx);
     }
   }
 
@@ -875,6 +891,7 @@ class Network : public internal::ClockListener {
   embb::base::Atomic<int> * sink_counter_;
   int sink_count_;
   int slices_;
+  internal::Scheduler * sched_;
 
 #if EMBB_DATAFLOW_TRACE_SIGNAL_HISTORY
   std::vector<int> spawn_history_[Slices];

dataflow_cpp/test/dataflow_cpp_test_simple.cc

@@ -211,8 +211,10 @@ void SimpleTest::TestBasic() {
     network.AddSource(constant);
     network.AddSource(source);
 
+    network.Make(NUM_SLICES);
+
     try {
-      network(NUM_SLICES);
+      network();
     } catch (embb::base::ErrorException & e) {
       PT_ASSERT_MSG(false, e.What());
     }