// Copyright (c) 2006-2013, Andrey N. Sabelnikov, www.sabelnikov.net
// All rights reserved.
// 
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
// * Neither the name of the Andrey N. Sabelnikov nor the
// names of its contributors may be used to endorse or promote products
// derived from this software without specific prior written permission.
// 
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER  BE LIABLE FOR ANY
// DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
// (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
// ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
// 


#ifndef _PROFILE_TOOLS_H_
#define _PROFILE_TOOLS_H_

#include <chrono>
#include "misc_os_dependent.h"

namespace epee
{

#ifdef ENABLE_PROFILING
#define PROFILE_FUNC(immortal_ptr_str) static profile_tools::local_call_account lcl_acc(immortal_ptr_str); \
	profile_tools::call_frame cf(lcl_acc);

#define PROFILE_FUNC_SECOND(immortal_ptr_str) static profile_tools::local_call_account lcl_acc2(immortal_ptr_str); \
	profile_tools::call_frame cf2(lcl_acc2);

#define PROFILE_FUNC_THIRD(immortal_ptr_str) static profile_tools::local_call_account lcl_acc3(immortal_ptr_str); \
	profile_tools::call_frame cf3(lcl_acc3);

#define PROFILE_FUNC_ACC(acc) \
	profile_tools::call_frame cf(acc);


#else
#define PROFILE_FUNC(immortal_ptr_str)
#define PROFILE_FUNC_SECOND(immortal_ptr_str)
#define PROFILE_FUNC_THIRD(immortal_ptr_str)
#endif

#define START_WAY_POINTS() uint64_t _____way_point_time = epee::misc_utils::get_tick_count();
#define WAY_POINT(name) {uint64_t delta = epee::misc_utils::get_tick_count()-_____way_point_time; MDEBUG("Way point " << name << ": " << delta);_____way_point_time = misc_utils::get_tick_count();}
#define WAY_POINT2(name, avrg_obj) {uint64_t delta = epee::misc_utils::get_tick_count()-_____way_point_time; avrg_obj.push(delta); MDEBUG("Way point " << name << ": " << delta);_____way_point_time = misc_utils::get_tick_count();}


#define TIME_MEASURE_START(var_name)    uint64_t var_name = epee::misc_utils::get_tick_count();
#define TIME_MEASURE_PAUSE(var_name)    var_name = epee::misc_utils::get_tick_count() - var_name;
#define TIME_MEASURE_RESTART(var_name)  var_name = epee::misc_utils::get_tick_count() - var_name;
#define TIME_MEASURE_FINISH(var_name)   var_name = epee::misc_utils::get_tick_count() - var_name;

#define TIME_MEASURE_NS_START(var_name)    uint64_t var_name = epee::misc_utils::get_ns_count();
#define TIME_MEASURE_NS_PAUSE(var_name)    var_name = epee::misc_utils::get_ns_count() - var_name;
#define TIME_MEASURE_NS_RESTART(var_name)  var_name = epee::misc_utils::get_ns_count() - var_name;
#define TIME_MEASURE_NS_FINISH(var_name)   var_name = epee::misc_utils::get_ns_count() - var_name;

namespace profile_tools
{
	struct local_call_account
	{
		local_call_account(const char* pstr):m_count_of_call(0), m_summary_time_used(0),m_pname(pstr)
		{}
		~local_call_account()
		{
			MINFO("PROFILE "<<m_pname<<":av_time:\t" << (m_count_of_call ? (m_summary_time_used/m_count_of_call):0) <<" sum_time:\t"<<m_summary_time_used<<" call_count:\t" << m_count_of_call);
		}

		size_t m_count_of_call;
		uint64_t m_summary_time_used;
		const char* m_pname;
	};
	
	struct call_frame
	{

		call_frame(local_call_account& cc):m_cc(cc)
		{
			cc.m_count_of_call++;
			m_call_time = std::chrono::steady_clock::now();
			//::QueryPerformanceCounter((LARGE_INTEGER *)&m_call_time);
		}
		
		~call_frame()
		{
			//__int64 ret_time = 0;

      auto elapsed = std::chrono::steady_clock::now() - m_call_time;
      uint64_t useconds_used = static_cast<uint64_t>(
          std::chrono::duration_cast<std::chrono::microseconds>(elapsed).count());

			//::QueryPerformanceCounter((LARGE_INTEGER *)&ret_time);
			//m_call_time = (ret_time-m_call_time)/1000;
			m_cc.m_summary_time_used += useconds_used;
		}
		
	private:
		local_call_account& m_cc;
    std::chrono::steady_clock::time_point m_call_time;
	};
	

}
}


#endif //_PROFILE_TOOLS_H_
