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pmprof: fix missing output in the 100% miss case

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Also update to the latest version of pmprof.
This commit is contained in:
Jean-Marc Lasgouttes 2022-05-19 11:35:39 +02:00
parent a77c84a0b4
commit 6dd5656a2c
1 changed files with 49 additions and 42 deletions
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91
src/support/pmprof.h
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@ -117,30 +117,37 @@
#include <iostream>
//#if defined(__GNUG__) && defined(_GLIBCXX_DEBUG)
//#error Profiling is not usable when run-time debugging is in effect
//#endif
#if defined(__GNUG__) && defined(_GLIBCXX_DEBUG)
#error Profiling is not usable when run-time debugging is in effect
#endif
namespace _pmprof {
using namespace std;
using namespace chrono;
namespace {
void dumpTime(std::chrono::duration<double> value)
void dump_time(system_clock::duration value)
{
double const val = value.count();
std::cerr << std::fixed << std::setprecision(2);
if (val >= 1.0)
std::cerr << val << " s";
else if (val >= 0.001)
std::cerr << val * 1000 << " ms";
auto musec = duration_cast<microseconds>(value).count();
cerr << fixed << setprecision(2);
if (musec >= 1000000)
cerr << musec / 1000000.0 << " s";
else if (musec >= 1000)
cerr << musec / 1000.0 << " ms";
else
std::cerr << val * 1000000 << " us";
cerr << musec << " us";
}
void dump(std::chrono::duration<double> total, unsigned long long count) {
dumpTime(total / count);
std::cerr << ", count=" << count
<< ", total=";
dumpTime(total);
std::cerr << std::endl;
void dump(system_clock::duration total, unsigned long long count) {
if (count > 0) {
dump_time(total / count);
cerr << ", count=" << count << ", total=";
dump_time(total);
} else
std::cerr << "no data";
cerr << endl;
}
} // namespace
@ -150,30 +157,29 @@ void dump(std::chrono::duration<double> total, unsigned long long count) {
* variable, so that its destructor will be executed when the program
* ends.
*/
class PMProfStat {
class stat {
public:
PMProfStat(char const * name) : name_(name), count_(0), miss_count_(0) {}
stat(char const * name) : name_(name) {}
~PMProfStat() {
if (count_>0) {
~stat() {
if (count_ + miss_count_ > 0) {
if (miss_count_ == 0) {
std::cerr << "#pmprof# " << name_ << ": ";
cerr << "#pmprof# " << name_ << ": ";
dump(dur_, count_);
}
else {
std::cerr << "#pmprof# " << name_ << ": ";
cerr << "#pmprof# " << name_ << ": ";
dump(dur_ + miss_dur_, count_ + miss_count_);
std::cerr << " hit: " << 100 * count_ / (count_ + miss_count_) << "%, ";
cerr << " hit: " << 100 * count_ / (count_ + miss_count_) << "%, ";
dump(dur_, count_);
std::cerr << " miss: " << 100 * miss_count_ / (count_ + miss_count_) << "%, ";
cerr << " miss: " << 100 * miss_count_ / (count_ + miss_count_) << "%, ";
dump(miss_dur_, miss_count_);
}
}
} else
std::cerr << "#pmprof# " << name_ << ": no data" << std::endl;
}
void add(std::chrono::duration<double> d, const bool hit) {
void add(system_clock::duration d, const bool hit) {
if (hit) {
dur_ += d;
count_++;
@ -185,41 +191,42 @@ public:
private:
char const * name_;
std::chrono::duration<double> dur_, miss_dur_;
unsigned long long count_, miss_count_;
system_clock::duration dur_, miss_dur_;
unsigned long long count_ = 0, miss_count_ = 0;
};
/* Helper class which gathers data at the end of the scope. One
* instance of this one should be created at each execution of the
* block. At the end of the block, it sends statistics to the static
* PMProfStat object.
* stat object.
*/
class PMProfInstance {
class instance {
public:
PMProfInstance(PMProfStat * stat) : hit(true), stat_(stat)
instance(stat * stat) : hit(true), stat_(stat)
{
before_ = std::chrono::system_clock::now();
before_ = system_clock::now();
}
~PMProfInstance() {
stat_->add(std::chrono::system_clock::now() - before_, hit);
~instance() {
stat_->add(system_clock::now() - before_, hit);
}
bool hit;
private:
std::chrono::system_clock::time_point before_;
PMProfStat * stat_;
system_clock::time_point before_;
stat * stat_;
};
}
#define PROFILE_THIS_BLOCK(a) \
static PMProfStat PMPS_##a(#a);\
PMProfInstance PMPI_##a(&PMPS_##a);
static _pmprof::stat _pmps_##a(#a); \
_pmprof::instance _pmpi_##a(&_pmps_##a);
#define PROFILE_CACHE_MISS(a) \
PMPI_##a.hit = false;
_pmpi_##a.hit = false;
#endif // !defined(DISABLE_PMPROF)