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121 lines
3.7 KiB
C++
121 lines
3.7 KiB
C++
/*
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Copyright (c) 2014-2015 Intel Corporation. All Rights Reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions
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are met:
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* Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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* Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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* Neither the name of Intel Corporation nor the names of its
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contributors may be used to endorse or promote products derived
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from this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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// The parts of the offload library used only on the target
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#ifndef OFFLOAD_TARGET_H_INCLUDED
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#define OFFLOAD_TARGET_H_INCLUDED
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#include "offload_common.h"
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#include "coi/coi_server.h"
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// The offload descriptor.
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class OffloadDescriptor
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{
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public:
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~OffloadDescriptor() {
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if (m_vars != 0) {
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free(m_vars);
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}
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}
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// Entry point for COI. Synchronously execute offloaded region given
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// the provided buffers, misc and return data.
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static void offload(
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uint32_t buffer_count,
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void** buffers,
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void* misc_data,
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uint16_t misc_data_len,
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void* return_data,
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uint16_t return_data_len
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);
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// scatters input data from in buffer to target variables
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void scatter_copyin_data();
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// gathers output data to the buffer
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void gather_copyout_data();
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// merges local variable descriptors with the descriptors received from
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// host
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void merge_var_descs(VarDesc *vars, VarDesc2 *vars2, int vars_total);
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int get_offload_number() const {
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return m_offload_number;
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}
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void set_offload_number(int number) {
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m_offload_number = number;
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}
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private:
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// Constructor
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OffloadDescriptor() : m_vars(0)
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{}
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private:
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typedef std::list<void*> BufferList;
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// The Marshaller for the inputs of the offloaded region.
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Marshaller m_in;
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// The Marshaller for the outputs of the offloaded region.
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Marshaller m_out;
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// List of buffers that are passed to dispatch call
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BufferList m_buffers;
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// Variable descriptors received from host
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VarDesc* m_vars;
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int m_vars_total;
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int m_offload_number;
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};
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// one time target initialization in main
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DLL_LOCAL extern void __offload_target_init(void);
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// logical device index
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DLL_LOCAL extern int mic_index;
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// total number of available logical devices
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DLL_LOCAL extern int mic_engines_total;
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// device frequency (from COI)
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DLL_LOCAL extern uint64_t mic_frequency;
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struct RefInfo {
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RefInfo(bool is_add, long amount):is_added(is_add),count(amount)
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{}
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bool is_added;
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long count;
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};
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#endif // OFFLOAD_TARGET_H_INCLUDED
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