//
// Copyright (c) 2015 Advanced Micro Devices, Inc. All rights reserved.
//
#pragma once

#include "device/pal/palmemory.hpp"

/*! \addtogroup GPU GPU Device Implementation
 *  @{
 */
#ifndef isinf
#ifdef _MSC_VER
#define isinf(X) (!_finite(X) && !_isnan(X))
#else   //!_MSC_VER
#define isinf(X) (std::isinf(X))
#endif  //!_MSC_VER
#endif  // isinf

#ifndef isnan
#ifdef _MSC_VER
#define isnan(X) (_isnan(X))
#else   //!_MSC_VER
#define isnan(X) (std::isnan(X))
#endif  //!_MSC_VER
#endif  // isnan

#ifndef copysign
#ifdef _MSC_VER
#define copysign(X, Y) (_copysign(X, Y))
#endif  //_MSC_VER
#endif  // copysign

//! GPU Device Implementation
namespace pal {

class Kernel;
class VirtualGPU;
class Memory;

class PrintfDbg : public amd::HeapObject {
 public:
  //! Debug buffer size per workitem
  static const uint WorkitemDebugSize = 4096;

  //! Default constructor
  PrintfDbg(Device& device, FILE* file = NULL);

  //! Destructor
  ~PrintfDbg();

  //! Creates the PrintfDbg object
  bool create();

  //! Initializes the debug buffer before kernel's execution
  bool init(VirtualGPU& gpu,          //!< Virtual GPU object
            bool printfEnabled,       //!< checks for printf
            const amd::NDRange& size  //!< Kernel's workload
            );

  //! Prints the kernel's debug informaiton from the buffer
  bool output(VirtualGPU& gpu,                           //!< Virtual GPU object
              bool printfEnabled,                        //!< checks for printf
              const amd::NDRange& size,                  //!< Kernel's workload
              const std::vector<device::PrintfInfo>& printfInfo  //!< printf info
              );

  //! Debug buffer size per workitem
  size_t wiDbgSize() const { return wiDbgSize_; }

  //! Returns debug buffer object
  Memory* dbgBuffer() const { return dbgBuffer_; }

 protected:
  Memory* dbgBuffer_;    //!< Buffer to hold debug output
  FILE* dbgFile_;        //!< Debug file
  Device& gpuDevice_;    //!< GPU device object
  Memory* xferBufRead_;  //!< Transfer buffer for the dump read

  //! Gets GPU device object
  Device& dev() const { return gpuDevice_; }

  //! Allocates the debug buffer
  bool allocate(bool realloc = false  //!< If TRUE then reallocate the debug memory
                );

  //! Returns TRUE if a float value has to be printed
  bool checkFloat(const std::string& fmt  //!< Format string
                  ) const;

  //! Returns TRUE if a string value has to be printed
  bool checkString(const std::string& fmt  //!< Format string
                   ) const;

  //! Finds the specifier in the format string
  int checkVectorSpecifier(const std::string& fmt,  //!< Format string
                           size_t startPos,         //!< Start position for processing
                           size_t& curPos           //!< End position for processing
                           ) const;

  //! Outputs an argument
  size_t outputArgument(const std::string& fmt,   //!< Format strint
                        bool printFloat,          //!< Argument is a float value
                        size_t size,              //!< Argument's size
                        const uint32_t* argument  //!< Argument's location
                        ) const;

  //! Displays the PrintfDbg
  void outputDbgBuffer(const device::PrintfInfo& info,//!< printf info
                       const uint32_t* workitemData,  //!< The PrintfDbg dump buffer
                       size_t& i                      //!< index to the data in the buffer
                       ) const;

 private:
  //! Disable copy constructor
  PrintfDbg(const PrintfDbg&);

  //! Disable assignment
  PrintfDbg& operator=(const PrintfDbg&);

  //! Returns the pointer to the workitem data block
  bool clearWorkitems(VirtualGPU& gpu,  //!< Virtual GPU object
                      size_t idxStart,  //!< Workitem global index start
                      size_t number     //!< Number of workitems to clear
                      ) const;

  //! Returns the pointer to the workitem data block
  uint32_t* mapWorkitem(VirtualGPU& gpu,  //!< Virtual GPU object
                        size_t idx,       //!< Workitem global index
                        bool* realloc     //!< Returns TRUE if workitem reached the buffer limit
                        );

  //! Unamp the staged buffer
  void unmapWorkitem(VirtualGPU& gpu,              //!< Virtual GPU object
                     const uint32_t* workitemData  //!< The PrintfDbg dump buffer
                     ) const;

  size_t wiDbgSize_;     //!< Workitem debug size
  Memory initCntValue_;  //!< Initialized count value
};
class PrintfDbgHSA : public PrintfDbg {
 public:
  //! Default constructor
  PrintfDbgHSA(Device& device, FILE* file = NULL) : PrintfDbg(device, file) {}

  //! Initializes the debug buffer before kernel's execution
  bool init(VirtualGPU& gpu,    //!< Virtual GPU object
            bool printfEnabled  //!< checks for printf
            );

  //! Prints the kernel's debug informaiton from the buffer
  bool output(VirtualGPU& gpu,                           //!< Virtual GPU object
              bool printfEnabled,                        //!< checks for printf
              const std::vector<device::PrintfInfo>& printfInfo  //!< printf info
              );

 private:
  //! Disable copy constructor
  PrintfDbgHSA(const PrintfDbgHSA&);

  //! Disable assignment
  PrintfDbgHSA& operator=(const PrintfDbgHSA&);
};

/*@}*/} // namespace pal