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76 lines
2.3 KiB
76 lines
2.3 KiB
/* Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserve.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License. */
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#pragma once
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#include <iostream>
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#include "paddle/platform/variant.h"
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namespace paddle {
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namespace platform {
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struct CPUPlace {
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// WORKAROUND: for some reason, omitting this constructor
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// causes errors with boost 1.59 and OSX
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CPUPlace() {}
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// needed for variant equality comparison
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inline bool operator==(const CPUPlace &) const { return true; }
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inline bool operator!=(const CPUPlace &) const { return false; }
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};
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struct GPUPlace {
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GPUPlace() : GPUPlace(0) {}
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explicit GPUPlace(int d) : device(d) {}
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// needed for variant equality comparison
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inline bool operator==(const GPUPlace &o) const { return device == o.device; }
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inline bool operator!=(const GPUPlace &o) const { return !(*this == o); }
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int device;
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};
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struct IsGPUPlace : public boost::static_visitor<bool> {
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bool operator()(const CPUPlace &) const { return false; }
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bool operator()(const GPUPlace &gpu) const { return true; }
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};
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// Define the max number of Place in bit length. i.e., the max number of places
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// should be less equal than 2^(NUM_PLACE_TYPE_LIMIT_IN_BIT)
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#define NUM_PLACE_TYPE_LIMIT_IN_BIT 4
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typedef boost::variant<GPUPlace, CPUPlace> Place;
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// static check number of place types is less equal than
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// 2^(NUM_PLACE_TYPE_LIMIT_IN_BIT)
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BOOST_MPL_ASSERT((boost::mpl::less_equal<
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Place::types::size,
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boost::mpl::long_<1 << NUM_PLACE_TYPE_LIMIT_IN_BIT>>));
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void set_place(const Place &);
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const Place &get_place();
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const GPUPlace default_gpu();
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const CPUPlace default_cpu();
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bool is_gpu_place(const Place &);
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bool is_cpu_place(const Place &);
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bool places_are_same_class(const Place &, const Place &);
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std::ostream &operator<<(std::ostream &, const Place &);
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} // namespace platform
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} // namespace paddle
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