/**
 * \file dnn/test/common/workspace_wrapper.cpp
 * MegEngine is Licensed under the Apache License, Version 2.0 (the "License")
 *
 * Copyright (c) 2014-2021 Megvii Inc. All rights reserved.
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT ARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 */
#include "test/common/workspace_wrapper.h"

#include "test/common/utils.h"

namespace megdnn {
namespace test {

WorkspaceWrapper::WorkspaceWrapper() : WorkspaceWrapper(nullptr, 0) {}

WorkspaceWrapper::WorkspaceWrapper(Handle* handle, size_t size_in_bytes)
        : m_handle(handle) {
    m_workspace.size = size_in_bytes;
    if (m_workspace.size > 0) {
        m_workspace.raw_ptr =
                static_cast<dt_byte*>(megdnn_malloc(handle, size_in_bytes));
    } else {
        m_workspace.raw_ptr = nullptr;
    }
}

void WorkspaceWrapper::update(size_t size_in_bytes) {
    megdnn_assert(this->valid());
    if (size_in_bytes > m_workspace.size) {
        // free workspace
        if (m_workspace.size > 0) {
            megdnn_free(m_handle, m_workspace.raw_ptr);
            m_workspace.raw_ptr = nullptr;
        }
        // alloc new workspace
        m_workspace.size = size_in_bytes;
        if (m_workspace.size > 0) {
            m_workspace.raw_ptr =
                    static_cast<dt_byte*>(megdnn_malloc(m_handle, size_in_bytes));
        } else {
            m_workspace.raw_ptr = nullptr;
        }
    }
}

WorkspaceWrapper::~WorkspaceWrapper() {
    if (m_workspace.size > 0) {
        megdnn_free(m_handle, m_workspace.raw_ptr);
        m_workspace.raw_ptr = nullptr;
    }
}

}  // namespace test
}  // namespace megdnn

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