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// Copyright (c) 2016-2018, The Monero Project
//
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without modification, are
// permitted provided that the following conditions are met:
//
// 1. Redistributions of source code must retain the above copyright notice, this list of
// conditions and the following disclaimer.
//
// 2. 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.
//
// 3. Neither the name of the copyright holder 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 HOLDER OR CONTRIBUTORS 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.
#include <vector>
#include "misc_os_dependent.h"
#include "perf_timer.h"
#undef MONERO_DEFAULT_LOG_CATEGORY
#define MONERO_DEFAULT_LOG_CATEGORY "perf"
namespace
{
uint64_t get_tick_count()
{
#if defined(__x86_64__)
uint32_t hi, lo;
__asm__ volatile("rdtsc" : "=a"(lo), "=d"(hi));
return (((uint64_t)hi) << 32) | (uint64_t)lo;
#else
return epee::misc_utils::get_ns_count();
#endif
}
#ifdef __x86_64__
uint64_t get_ticks_per_ns()
{
uint64_t t0 = epee::misc_utils::get_ns_count(), t1;
uint64_t r0 = get_tick_count();
while (1)
{
t1 = epee::misc_utils::get_ns_count();
if (t1 - t0 > 1*1000000000) break; // work one second
}
uint64_t r1 = get_tick_count();
uint64_t tpns256 = 256 * (r1 - r0) / (t1 - t0);
return tpns256 ? tpns256 : 1;
}
#endif
#ifdef __x86_64__
uint64_t ticks_per_ns = get_ticks_per_ns();
#endif
uint64_t ticks_to_ns(uint64_t ticks)
{
#if defined(__x86_64__)
return 256 * ticks / ticks_per_ns;
#else
return ticks;
#endif
}
}
namespace tools
{
el::Level performance_timer_log_level = el::Level::Debug;
static __thread std::vector<PerformanceTimer*> *performance_timers = NULL;
void set_performance_timer_log_level(el::Level level)
{
if (level != el::Level::Debug && level != el::Level::Trace && level != el::Level::Info
&& level != el::Level::Warning && level != el::Level::Error && level != el::Level::Fatal)
{
MERROR("Wrong log level: " << el::LevelHelper::convertToString(level) << ", using Debug");
level = el::Level::Debug;
}
performance_timer_log_level = level;
}
PerformanceTimer::PerformanceTimer(const std::string &s, uint64_t unit, el::Level l): name(s), unit(unit), level(l), started(false), paused(false)
{
ticks = get_tick_count();
if (!performance_timers)
{
MLOG(level, "PERF ----------");
performance_timers = new std::vector<PerformanceTimer*>();
}
else
{
PerformanceTimer *pt = performance_timers->back();
if (!pt->started && !pt->paused)
{
size_t size = 0; for (const auto *tmp: *performance_timers) if (!tmp->paused) ++size;
MLOG(pt->level, "PERF " << std::string((size-1) * 2, ' ') << " " << pt->name);
pt->started = true;
}
}
performance_timers->push_back(this);
}
PerformanceTimer::~PerformanceTimer()
{
performance_timers->pop_back();
if (!paused)
ticks = get_tick_count() - ticks;
char s[12];
snprintf(s, sizeof(s), "%8llu ", (unsigned long long)(ticks_to_ns(ticks) / (1000000000 / unit)));
size_t size = 0; for (const auto *tmp: *performance_timers) if (!tmp->paused || tmp==this) ++size;
MLOG(level, "PERF " << s << std::string(size * 2, ' ') << " " << name);
if (performance_timers->empty())
{
delete performance_timers;
performance_timers = NULL;
}
}
void PerformanceTimer::pause()
{
if (paused)
return;
ticks = get_tick_count() - ticks;
paused = true;
}
void PerformanceTimer::resume()
{
if (!paused)
return;
ticks = get_tick_count() - ticks;
paused = false;
}
}
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