foreman
133 baris
3.7 KiB
C++
133 baris
3.7 KiB
C++
//
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// Copyright (c) 2008 Advanced Micro Devices, Inc. All rights reserved.
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//
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#ifndef GPUTIMESTAMP_HPP_
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#define GPUTIMESTAMP_HPP_
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#include "device/gpu/gpudefs.hpp"
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#include "device/gpu/gpuresource.hpp"
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/*! \addtogroup GPU GPU Resource Implementation
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* @{
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*/
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//! GPU Device Implementation
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namespace gpu {
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class Device;
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class VirtualGPU;
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class Memory;
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class TimeStamp : public amd::HeapObject
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{
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public:
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//! Enums for the timestamp information
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//! \note *4 is the limitaiton of SDMA HW
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//! (address has to be aligned by 256 bit)
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enum TimeStampValue {
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CommandStartTime = 0,
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CommandEndTime = 4,
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CommandTotal = 8
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};
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//! The TimeStamp object flags
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union Flags
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{
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struct
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{
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uint32_t beginIssued_ : 1;
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uint32_t endIssued_ : 1;
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uint32_t sdma_ : 1;
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};
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uint32_t value_;
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Flags(): value_(0) {}
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};
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//! Default constructor
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TimeStamp(
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const VirtualGPU& gpu, //!< Virtual GPU
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gslMemObject gslMem, //!< Buffer with the timer values
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uint memOffset, //!< Offset in the buffer for the current TS
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address cpuAddr //!< CPU pointer for the values in memory
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);
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//! Default destructor
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~TimeStamp();
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//! Starts the timestamp
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void begin(bool sdma = false);
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//! Ends the timestamp
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void end(bool sdma = false);
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//! Returns the timestamp result in nano seconds
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void value(uint64_t* startTime, uint64_t* endTime);
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//! Clear all TimeStamp states
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void clearStates()
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{ flags_.value_ = 0;
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values_[CommandStartTime] = 0;
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values_[CommandEndTime] = 0;
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}
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//! Timer commands were submitted to HW
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bool isValid() const { return (flags_.endIssued_) ? true : false; }
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private:
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//! Disable copy constructor
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TimeStamp(const TimeStamp&);
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//! Disable operator=
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TimeStamp& operator=(const TimeStamp&);
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//! Returns the GPU device object
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const VirtualGPU& gpu() const { return gpu_; }
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const VirtualGPU& gpu_; //!< Virtual GPU
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Flags flags_; //!< The time stamp state
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gslMemObject gslMem_; //!< Buffer with the timer values
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uint memOffset_; //!< Offset in the buffer for the current timer
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volatile uint64_t* values_; //!< CPU pointer to the timer values
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};
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class TimeStampCache : public amd::HeapObject
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{
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public:
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//! Default constructor
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TimeStampCache(
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VirtualGPU& gpu //!< Virtual GPU object
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)
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: gpu_(gpu)
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, tsBufCpu_(NULL)
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, tsOffset_(0) {}
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//! Default destructor
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~TimeStampCache();
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//! Gets a time stamp object. It will find a freed object or allocate a new one
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TimeStamp* allocTimeStamp();
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//! Frees a time stamp object
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void freeTimeStamp(TimeStamp* ts) { freedTS_.push_back(ts); }
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private:
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static const uint TimerSlotSize = TimeStamp::CommandTotal * sizeof(uint64_t);
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static const uint TimerBufSize = TimerSlotSize * 4096;
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//! Disable copy constructor
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TimeStampCache(const TimeStampCache&);
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//! Disable operator=
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TimeStampCache& operator=(const TimeStampCache&);
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std::vector<TimeStamp*> freedTS_; //!< Array of freed time stamp objects
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VirtualGPU& gpu_; //!< Virtual GPU
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std::vector<Memory*> tsBuf_; //!< Array of memory objects with the timer value
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address tsBufCpu_; //!< CPU pointer for current TS memory
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uint tsOffset_; //!< Active offset in the current mem object
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};
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/*@}*/} // namespace gpu
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#endif /*GPUTIMESTAMP_HPP_*/
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