/* * Licensed to the Apache Software Foundation (ASF) under one * or more contributor license agreements. See the NOTICE file * distributed with this work for additional information * regarding copyright ownership. The ASF licenses this file * to you 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. */ /*! * \file src/runtime/naive_allocator.h */ #ifndef TVM_RUNTIME_VM_NAIVE_ALLOCATOR_H_ #define TVM_RUNTIME_VM_NAIVE_ALLOCATOR_H_ #include <tvm/runtime/device_api.h> #include <atomic> #include "memory_manager.h" namespace tvm { namespace runtime { namespace vm { class NaiveAllocator final : public Allocator { public: explicit NaiveAllocator(TVMContext ctx) : Allocator(), used_memory_(0), ctx_(ctx) {} Buffer Alloc(size_t nbytes, size_t alignment, DLDataType type_hint) override { Buffer buf; buf.ctx = ctx_; buf.size = nbytes; buf.data = DeviceAPI::Get(ctx_)->AllocDataSpace(ctx_, nbytes, alignment, type_hint); used_memory_.fetch_add(nbytes, std::memory_order_relaxed); DLOG(INFO) << "allocate " << nbytes << " B, used memory " << used_memory_ << " B"; return buf; } void Free(const Buffer& buffer) override { DeviceAPI::Get(ctx_)->FreeDataSpace(buffer.ctx, buffer.data); used_memory_.fetch_sub(buffer.size, std::memory_order_relaxed); DLOG(INFO) << "free " << buffer.size << " B, used memory " << used_memory_ << " B"; } size_t UsedMemory() const override { return used_memory_.load(std::memory_order_relaxed); } private: std::atomic<size_t> used_memory_; TVMContext ctx_; }; } // namespace vm } // namespace runtime } // namespace tvm #endif // TVM_RUNTIME_VM_NAIVE_ALLOCATOR_H_