malloc.hpp

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// Copyright (c) 2022-2024 Simons Foundation
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0.txt
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
// Authors: Thomas Hahn, Miguel Morales, Nils Wentzell
 
#pragma once
 
#include "./address_space.hpp"
#include "../device.hpp"
 
#include <cstdlib>
 
namespace nda::mem {
 
  template <AddressSpace AdrSp>
  void *malloc(size_t size) {
    check_adr_sp_valid<AdrSp>();
    static_assert(nda::have_device == nda::have_cuda, "Adjust function for new device types");
 
    void *ptr = nullptr;
    if constexpr (AdrSp == Host) {
      ptr = std::malloc(size); // NOLINT (we want to return a void*)
    } else if constexpr (AdrSp == Device) {
      device_error_check(cudaMalloc((void **)&ptr, size), "cudaMalloc");
    } else {
      device_error_check(cudaMallocManaged((void **)&ptr, size), "cudaMallocManaged");
    }
    return ptr;
  }
 
  template <AddressSpace AdrSp>
  void free(void *p) {
    check_adr_sp_valid<AdrSp>();
    static_assert(nda::have_device == nda::have_cuda, "Adjust function for new device types");
 
    if constexpr (AdrSp == Host) {
      std::free(p); // NOLINT (we want to call free with a void*)
    } else {
      device_error_check(cudaFree(p), "cudaFree");
    }
  }
 
} // namespace nda::mem