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153 lines
4.0 KiB
153 lines
4.0 KiB
#ifndef _XECALLQUEUE_HPP
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#define _XECALLQUEUE_HPP
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/*-------------------------------------------------------------------------
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* drawElements Quality Program Test Executor
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* ------------------------------------------
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*
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* Copyright 2014 The Android Open Source Project
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*
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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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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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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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*
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*//*!
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* \file
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* \brief Cross-thread function call dispatcher.
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*//*--------------------------------------------------------------------*/
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#include "xeDefs.hpp"
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#include "deMutex.hpp"
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#include "deSemaphore.hpp"
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#include "deRingBuffer.hpp"
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#include <vector>
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namespace xe
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{
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class Call;
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class CallReader;
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class CallWriter;
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class CallQueue;
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// \todo [2012-07-10 pyry] Optimize memory management in Call
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// \todo [2012-07-10 pyry] CallQueue API could be improved to match TestLog API more closely.
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// In order to do that, reference counting system for call object management is needed.
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class Call
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{
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public:
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typedef void (*Function) (CallReader& data);
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Call (void);
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~Call (void);
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void clear (void);
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Function getFunction (void) const { return m_func; }
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void setFunction (Function func) { m_func = func; }
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size_t getDataSize (void) const { return m_data.size(); }
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void setDataSize (size_t size) { m_data.resize(size); }
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const deUint8* getData (void) const { return m_data.empty() ? DE_NULL : &m_data[0]; }
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deUint8* getData (void) { return m_data.empty() ? DE_NULL : &m_data[0]; }
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private:
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Function m_func;
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std::vector<deUint8> m_data;
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};
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class CallReader
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{
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public:
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CallReader (Call* call);
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CallReader (void) : m_call(DE_NULL), m_curPos(0) {}
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void read (deUint8* bytes, size_t numBytes);
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const deUint8* getDataBlock (size_t numBytes); //!< \note Valid only during call.
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bool isDataConsumed (void) const; //!< all data has been consumed
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private:
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CallReader (const CallReader& other); //!< disallowed
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CallReader& operator= (const CallReader& other); //!< disallowed
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Call* m_call;
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size_t m_curPos;
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};
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class CallWriter
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{
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public:
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CallWriter (CallQueue* queue, Call::Function function);
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~CallWriter (void);
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void write (const deUint8* bytes, size_t numBytes);
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void enqueue (void);
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private:
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CallWriter (const CallWriter& other);
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CallWriter& operator= (const CallWriter& other);
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CallQueue* m_queue;
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Call* m_call;
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bool m_enqueued;
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};
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class CallQueue
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{
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public:
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CallQueue (void);
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~CallQueue (void);
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void callNext (void); //!< Executes and removes first call in queue. Will block if queue is empty.
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Call* getEmptyCall (void);
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void enqueue (Call* call);
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void freeCall (Call* call);
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void cancel (void);
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private:
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CallQueue (const CallQueue& other);
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CallQueue& operator= (const CallQueue& other);
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bool m_canceled;
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de::Semaphore m_callSem;
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de::Mutex m_lock;
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std::vector<Call*> m_calls;
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std::vector<Call*> m_freeCalls;
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de::RingBuffer<Call*> m_callQueue;
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};
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// Stream operators for call reader / writer.
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CallReader& operator>> (CallReader& reader, std::string& value);
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CallWriter& operator<< (CallWriter& writer, const char* str);
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template <typename T>
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CallReader& operator>> (CallReader& reader, T& value)
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{
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reader.read((deUint8*)&value, sizeof(T));
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return reader;
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}
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template <typename T>
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CallWriter& operator<< (CallWriter& writer, T& value)
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{
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writer.write((const deUint8*)&value, sizeof(T));
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return writer;
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}
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} // xe
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#endif // _XECALLQUEUE_HPP
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