cpu_allocator.cc 1.5 KB
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// Copyright (c) 2018 PaddlePaddle Authors. All Rights Reserved.
//
// 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
//
// 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.

#include "paddle/fluid/memory/allocation/cpu_allocator.h"
#include <stdlib.h>
#include <string>

namespace paddle {
namespace memory {
namespace allocation {

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CPUAllocation::CPUAllocation(void *ptr, size_t size)
    : Allocation(ptr, size, platform::CPUPlace()) {}
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bool CPUAllocator::IsAllocThreadSafe() const { return true; }

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void CPUAllocator::FreeImpl(Allocation *allocation) {
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  PADDLE_ENFORCE_NOT_NULL(dynamic_cast<CPUAllocation *>(allocation));
  free(allocation->ptr());
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  delete allocation;
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}

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Allocation *CPUAllocator::AllocateImpl(size_t size, Allocator::Attr attr) {
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  void *ptr;
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  auto status = posix_memalign(&ptr, kAlignment, size);
  if (UNLIKELY(status) != 0) {
    throw BadAlloc(string::Sprintf("Cannot allocate cpu memory %d. Errno is %d",
                                   size, status));
  }
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  return new CPUAllocation(ptr, size);
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}
}  // namespace allocation
}  // namespace memory
}  // namespace paddle