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Add simple debug hit rate counter

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Add a very simple debug framework to
measure the hit rate of a given condition.

Simply insert macro

dbg_hit_on(x);

Anywhere you want to compute hit rate of condition x
and then call, as example in poll(), function
dbg_print_hit_rate() to print current results.

Signed-off-by: Marco Costalba <mcostalba@gmail.com>
This commit is contained in:
Marco Costalba
2008-09-06 12:22:10 +02:00
parent d786822b92
commit 61f41a057d
2 changed files with 24 additions and 0 deletions
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16
src/misc.cpp
View File

@@ -38,15 +38,31 @@ int gettimeofday(struct timeval * tp, struct timezone * tzp);
#include <cstdio> #include <cstdio>
#include <iomanip> #include <iomanip>
#include <iostream>
#include <sstream> #include <sstream>
#include "misc.h" #include "misc.h"
////
//// Variables
////
long dbg_cnt0 = 0;
long dbg_cnt1 = 0;
//// ////
//// Functions //// Functions
//// ////
void dbg_print_hit_rate() {
std::cout << "Total " << dbg_cnt0 << " Hit " << dbg_cnt1
<< " hit rate (%) " << (dbg_cnt1*100)/(dbg_cnt0 ? dbg_cnt0 : 1)
<< std::endl;
}
/// engine_name() returns the full name of the current Glaurung version. /// engine_name() returns the full name of the current Glaurung version.
/// This will be either "Glaurung YYMMDD" (where YYMMDD is the date when the /// This will be either "Glaurung YYMMDD" (where YYMMDD is the date when the
/// program was compiled) or "Glaurung <version number>", depending on whether /// program was compiled) or "Glaurung <version number>", depending on whether

8
src/misc.h
View File

@@ -56,5 +56,13 @@ extern int get_system_time();
extern int cpu_count(); extern int cpu_count();
extern int Bioskey(); extern int Bioskey();
////
//// Debug
////
extern long dbg_cnt0;
extern long dbg_cnt1;
extern void dbg_print_hit_rate();
#define dbg_hit_on(x) { dbg_cnt0++; if (x) dbg_cnt1++; }
#endif // !defined(MISC_H_INCLUDED) #endif // !defined(MISC_H_INCLUDED)