\( \newcommand{\E}{\mathrm{E}} \) \( \newcommand{\A}{\mathrm{A}} \) \( \newcommand{\R}{\mathrm{R}} \) \( \newcommand{\N}{\mathrm{N}} \) \( \newcommand{\Q}{\mathrm{Q}} \) \( \newcommand{\Z}{\mathrm{Z}} \) \( \def\ccSum #1#2#3{ \sum_{#1}^{#2}{#3} } \def\ccProd #1#2#3{ \sum_{#1}^{#2}{#3} }\)

CGAL 4.8 - Profiling tools, Hash Map, Union-find, Modifiers

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CGAL::Profile_counter Class Reference
Profiling Tools, Hash Map, Union-find, Modifiers Reference

`#include <CGAL/Profile_counter.h>`

## Definition

The class `Profile_counter` provides a way to count the number of times a given line of code is executed during the execution of a program, and print this number at the end of the execution of the program.

Such counters can be added at critical places in the code, and at the end of the execution of a program, the count is printed on `std::cerr`, together with an identification string passed to the constructor. The macro CGAL_PROFILER can be used to conveniently place these counters anywhere. They are disabled by default and activated by the global macro CGAL_PROFILE.

Operations

If `CGAL_PROFILE` is not defined, then `CGAL_PROFILER` is defined to an empty statement. Otherwise, it is defined to

{ static CGAL::Profile_counter tmp(MSG); ++tmp; }

File Profiling_tools/Profile_counter.cpp

#define CGAL_PROFILE
#include <CGAL/Profile_counter.h>
int main()
{
for (int i=0; i<10; ++i)
{
CGAL_PROFILER("iterations of the for-loop");
}
return 0;
}

will print at exit:

[CGAL::Profile_counter] 10 iterations of the for-loop

## Related Functions
(Note that these are not member functions.)
#define | CGAL_PROFILE
| Macro to enable and disable profiling statements.
#define | CGAL_PROFILER(MSG)
| Profiling macro that uses CGAL::Profile_counter.

## Creation
| Profile_counter (std::string s)
| The internal counter is initialized to 0, and the string `s` is stored for further printing by the destructor.
| ~Profile_counter ()
| The value of the counter is printed to `std::cerr` together with the string.

## Operations
void | operator++ ()
| Increments the internal counter.