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Small changes to Poor man's profiler

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* report results in milliseconds instead of microseconds
* report total time spent in block, additionally to mean time
* cause compilation error with --enable-stdlib-debug
This commit is contained in:
Jean-Marc Lasgouttes 2013-04-30 16:43:29 +02:00
parent 21c5bbec71
commit fb0827f8bb
1 changed files with 26 additions and 15 deletions
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41
src/support/pmprof.h
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@ -8,16 +8,6 @@
* Full author contact details are available in file CREDITS.
*/
#ifndef PMPROF_H
#define PMPROF_H
#ifdef _WIN32
#include <windows.h>
#else
#include <sys/time.h>
#endif
#include <iostream>
/** How to use this trivial profiler:
*
* * at the beginning of the interesting block, just add:
@ -96,8 +86,24 @@
*/
#ifdef _WIN32
#ifndef PMPROF_H
#define PMPROF_H
#ifdef _WIN32
#include <windows.h>
#else
#include <sys/time.h>
#endif
#include <iomanip>
#include <iostream>
#if defined(__GNUG__) && defined(_GLIBCXX_DEBUG)
#error Profiling is not usable when run-time debugging is in effect
#endif
#ifdef _WIN32
/* This function does not really returns the "time of day",
* but it will suffice to evaluate elapsed times.
*/
@ -125,10 +131,15 @@ public:
: name_(name), sec_(0), usec_(0), count_(0) {};
~PMProfStat() {
if (count_>0)
std::cerr << "##### " << name_ << ": "
<< 1.0 * (sec_ * 1000000 + usec_)/ count_
<< "usec, count=" << count_ << std::endl;
if (count_>0) {
double total = 0.001 * (sec_ * 1000000 + usec_);
std::cerr << std::fixed << std::setprecision(2)
<< "#pmprof# " << name_ << ": "
<< total / count_
<< "msec, count=" << count_
<< ", total=" << total << "msec"
<< std::endl;
}
}
void add(const long long s, const long long u) {