| /*! |
| * Copyright (c) 2017 by Contributors |
| * \file workspace_pool.h |
| * \brief Workspace pool utility. |
| */ |
| #ifndef TVM_RUNTIME_WORKSPACE_POOL_H_ |
| #define TVM_RUNTIME_WORKSPACE_POOL_H_ |
| |
| #include <tvm/runtime/device_api.h> |
| #include <vector> |
| |
| namespace tvm { |
| namespace runtime { |
| /*! |
| * \brief A workspace pool to manage |
| * |
| * \note We have the following assumption about backend temporal |
| * workspace allocation, and will optimize for such assumption, |
| * some of these assumptions can be enforced by the compiler. |
| * |
| * - Only a few allocation will happen, and space will be released after use. |
| * - The release order is usually in reverse order of allocate |
| * - Repeative pattern of same allocations over different runs. |
| */ |
| class TVM_DLL WorkspacePool { |
| public: |
| /*! |
| * \brief Create pool with specific device type and device. |
| * \param device_type The device type. |
| * \param device The device API. |
| */ |
| WorkspacePool(DLDeviceType device_type, std::shared_ptr<DeviceAPI> device); |
| /*! \brief destructor */ |
| ~WorkspacePool(); |
| /*! |
| * \brief Allocate temporal workspace. |
| * \param ctx The context of allocation. |
| * \param size The size to be allocated. |
| */ |
| void* AllocWorkspace(TVMContext ctx, size_t size); |
| /*! |
| * \brief Free temporal workspace in backend execution. |
| * |
| * \param ctx The context of allocation. |
| * \param ptr The pointer to be freed. |
| */ |
| void FreeWorkspace(TVMContext ctx, void* ptr); |
| |
| private: |
| class Pool; |
| /*! \brief pool of device local array */ |
| std::vector<Pool*> array_; |
| /*! \brief device type this pool support */ |
| DLDeviceType device_type_; |
| /*! \brief The device API */ |
| std::shared_ptr<DeviceAPI> device_; |
| }; |
| |
| } // namespace runtime |
| } // namespace tvm |
| #endif // TVM_RUNTIME_WORKSPACE_POOL_H_ |