/******************************************************************************
 *
 * Copyright (c) 2017, the Perspective Authors.
 *
 * This file is part of the Perspective library, distributed under the terms of
 * the Apache License 2.0.  The full license can be found in the LICENSE file.
 *
 */

#include <perspective/first.h>
#include <perspective/base.h>
#include <perspective/logtime.h>
#include <perspective/env_vars.h>
#include <iomanip>
#include <thread>
#include <sstream>
#include <iostream>

PSP_THR_LOCAL perspective::t_uindex th_curtime;
PSP_THR_LOCAL perspective::t_uindex th_curtime_origin;
PSP_THR_LOCAL perspective::t_uindex th_curmem;
PSP_THR_LOCAL perspective::t_uindex th_curmem_origin;
PSP_THR_LOCAL perspective::t_bool th_curtime_initialized;

namespace perspective
{
#ifdef PSP_ENABLE_WASM
void
psp_log_time(const t_str& s)
{
}
#else
void
psp_log_time(const t_str& s)
{
    if (!t_env::log_time())
    {
        return;
    }

    if (!th_curtime_initialized)
    {
        th_curtime_origin = psp_curtime();
        th_curmem_origin = psp_curmem();
        th_curtime_initialized = true;
    }

    auto prev_time = th_curtime / 1000000000.0;
    auto ns_curtime = psp_curtime() - th_curtime_origin;
    auto curtime = ns_curtime / 1000000000.0;
    auto curmem = psp_curmem();
    auto prev_curmem = static_cast<t_index>(th_curmem);
    th_curmem = curmem;
    th_curtime = ns_curtime;
    std::stringstream ss;
    ss << std::fixed << std::setprecision(3) << "stat tid "
       << std::this_thread::get_id() << " gt" << std::setw(10) << curtime
       << " dt " << std::setw(10) << curtime - prev_time << " gm "
       << std::setw(6) << curmem << " dm " << std::setw(6)
       << curmem - prev_curmem << " msg: " << s;
    std::cout << ss.str() << std::endl;
}
#endif
} // end namespace perspective