[HICN-371] Solve memory leaks in libtransport.

Signed-off-by: Mauro Sardara <msardara@cisco.com>
Change-Id: I654843c3361c7bdb4b160f2441f08e8d91e97384
Signed-off-by: Mauro Sardara <msardara@cisco.com>

3 files changed, 25 insertions, 10 deletions

diff --git a/libtransport/src/hicn/transport/core/hicn_forwarder_interface.cc b/libtransport/src/hicn/transport/core/hicn_forwarder_interface.cc
index 33a37f540..7047a3a67 100644
--- a/libtransport/src/hicn/transport/core/hicn_forwarder_interface.cc
+++ b/libtransport/src/hicn/transport/core/hicn_forwarder_interface.cc
@@ -63,7 +63,7 @@ void fillCommandHeader(CommandHeader *header) {
 
 RouteToSelfCommand createCommandRoute(std::unique_ptr<sockaddr> &&addr,
                                       uint8_t prefix_length) {
-  RouteToSelfCommand command;
+  RouteToSelfCommand command = {0};
 
   // check and set IP address
   if (addr->sa_family == AF_INET) {
diff --git a/libtransport/src/hicn/transport/core/portal.h b/libtransport/src/hicn/transport/core/portal.h
index 5796308b4..b2614d361 100644
--- a/libtransport/src/hicn/transport/core/portal.h
+++ b/libtransport/src/hicn/transport/core/portal.h
@@ -312,10 +312,10 @@ class Portal {
 
   Portal(asio::io_service &io_service)
       : io_service_(io_service),
+        packet_pool_(io_service),
         app_name_("libtransport_application"),
         consumer_callback_(nullptr),
         producer_callback_(nullptr),
-        packet_pool_(io_service),
         connector_(std::bind(&Portal::processIncomingMessages, this,
                              std::placeholders::_1),
                    std::bind(&Portal::setLocalRoutes, this), io_service_,
@@ -419,10 +419,13 @@ class Portal {
                                           this, std::placeholders::_1, hash)));
 
     auto it = pending_interest_hash_table_.find(hash);
-    if(it != pending_interest_hash_table_.end()){
+    if (it != pending_interest_hash_table_.end()) {
       it->second->cancelTimer();
+
+      // Get reference to interest packet in order to have it destroyed.
+      auto _int = it->second->getInterest();
       it->second = std::move(pending_interest);
-    }else{
+    } else {
       pending_interest_hash_table_[hash] = std::move(pending_interest);
     }
   }
@@ -562,6 +565,10 @@ class Portal {
   TRANSPORT_ALWAYS_INLINE void doClear() {
     for (auto &pend_interest : pending_interest_hash_table_) {
       pend_interest.second->cancelTimer();
+
+      // Get interest packet from pending interest and do nothing with it. It
+      // will get destroyed as it goes out of scope.
+      auto _int = pend_interest.second->getInterest();
     }
 
     pending_interest_hash_table_.clear();
@@ -641,13 +648,14 @@ class Portal {
       PendingInterest::Ptr interest_ptr = std::move(it->second);
       pending_interest_hash_table_.erase(it);
       interest_ptr->cancelTimer();
+      auto _int = interest_ptr->getInterest();
 
       if (interest_ptr->getOnDataCallback() != UNSET_CALLBACK) {
-        interest_ptr->on_content_object_callback_(
-            std::move(interest_ptr->getInterest()), std::move(content_object));
+        interest_ptr->on_content_object_callback_(std::move(_int),
+                                                  std::move(content_object));
       } else if (consumer_callback_) {
-        consumer_callback_->onContentObject(
-            std::move(interest_ptr->getInterest()), std::move(content_object));
+        consumer_callback_->onContentObject(std::move(_int),
+                                            std::move(content_object));
       }
     } else {
       TRANSPORT_LOGD("No pending interests for current content (%s)",
@@ -668,6 +676,7 @@ class Portal {
  private:
   asio::io_service &io_service_;
   asio::io_service internal_io_service_;
+  portal_details::Pool packet_pool_;
 
   std::string app_name_;
 
@@ -677,7 +686,6 @@ class Portal {
   ConsumerCallback *consumer_callback_;
   ProducerCallback *producer_callback_;
 
-  portal_details::Pool packet_pool_;
   portal_details::HandlerMemory async_callback_memory_;
 
   typename ForwarderInt::ConnectorType connector_;
diff --git a/libtransport/src/hicn/transport/utils/object_pool.h b/libtransport/src/hicn/transport/utils/object_pool.h
index e34730e81..e8f837753 100644
--- a/libtransport/src/hicn/transport/utils/object_pool.h
+++ b/libtransport/src/hicn/transport/utils/object_pool.h
@@ -47,7 +47,12 @@ class ObjectPool {
 
   ObjectPool() : destructor_(false) {}
 
-  ~ObjectPool() { destructor_ = true; }
+  ~ObjectPool() {
+    destructor_ = true;
+    for (auto &ptr : object_pool_) {
+      ptr.reset();
+    }
+  }
 
   std::pair<bool, Ptr> get() {
     if (object_pool_.empty()) {
@@ -65,6 +70,8 @@ class ObjectPool {
 
     if (TRANSPORT_EXPECT_TRUE(!destructor_)) {
       object_pool_.emplace_back(makePtr(object));
+    } else {
+      delete object;
     }
   }