Replace raw pointers for host_interface with shared_ptr to enable automatic memory handling

src/ipc/backend_ipc.cpp

@@ -77,8 +77,9 @@ IPCBackend::IPCBackend(MPI_Comm comm)
   bp->heap_ptr = &heap;
 
   /* Initialize the host interface */
-  host_interface =
-      new HostInterface(hdp_proxy_.get(), thread_comm, &heap);
+  host_interface = std::make_shared<HostInterface>(hdp_proxy_.get(),
+                                                 thread_comm,
+                                                 &heap);
 
   default_host_ctx = std::make_unique<IPCHostContext>(this, 0);
 
@@ -117,11 +118,6 @@ IPCBackend::~IPCBackend() {
    */
   CHECK_HIP(hipFree(bp->atomic_ret->atomic_base_ptr));
 
-  // TODO(Avinash) Free g_ret
-
-  // delete host_interface;
-  // host_interface = nullptr;
-
   /**
    * Destroy teams infrastructure
    * and team world

src/ipc/backend_ipc.hpp

@@ -124,9 +124,9 @@ class IPCBackend : public Backend {
 
   /**
    * @brief The host-facing interface that will be used
-   * by all contexts of the ROBackend
+   * by all contexts of the IPCBackend
    */
-  HostInterface *host_interface{nullptr};
+  std::shared_ptr<HostInterface> host_interface{nullptr};
 
   /**
    * @brief Scratchpad for the internal barrier algorithms.

src/ipc/context_ipc_host.hpp

@@ -136,8 +136,8 @@ class IPCHostContext : public Context {
   __host__ int test(T *ivars, int cmp, T val);
 
  public:
-  /* Pointer to the backend's host interface */
-  HostInterface *host_interface{nullptr};
+  /* Shared pointer to the backend's host interface */
+  std::shared_ptr<HostInterface> host_interface{nullptr};
 
   /* An MPI Window implements a context */
   WindowInfo *context_window_info{nullptr};