Transfer files from RAD repository

src/mpi_init_singleton.cpp

@@ -0,0 +1,61 @@
+/******************************************************************************
+ * Copyright (c) 2024 Advanced Micro Devices, Inc. All rights reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to
+ * deal in the Software without restriction, including without limitation the
+ * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ *****************************************************************************/
+
+#include "mpi_init_singleton.hpp"
+
+namespace rocshmem {
+
+MPIInitSingleton* MPIInitSingleton::instance{nullptr};
+
+MPIInitSingleton::MPIInitSingleton() {
+  MPI_Initialized(&pre_init_done);
+
+  if (!pre_init_done) {
+    int provided;
+    MPI_Init_thread(nullptr, nullptr, MPI_THREAD_SINGLE, &provided);
+  }
+
+  MPI_Comm_size(MPI_COMM_WORLD, &nprocs_);
+  MPI_Comm_rank(MPI_COMM_WORLD, &my_rank_);
+}
+
+MPIInitSingleton::~MPIInitSingleton() {
+  int finalized{0};
+  MPI_Finalized(&finalized);
+  if (!finalized && !pre_init_done) {
+    MPI_Finalize();
+  }
+}
+
+MPIInitSingleton* MPIInitSingleton::GetInstance() {
+  if (!instance) {
+    instance = new MPIInitSingleton();
+    return instance;
+  }
+  return instance;
+}
+
+int MPIInitSingleton::get_rank() { return my_rank_; }
+
+int MPIInitSingleton::get_nprocs() { return nprocs_; }
+
+}  // namespace rocshmem