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/* -*- C++ -*- */
/* An interval timer class using C++. */
#if !defined (ACE_PROFILE_TIMER_H)
#define ACE_PROFILE_TIMER_H
#include <sys/types.h>
#include <unistd.h>
#include <fcntl.h>
#include <sys/procfs.h>
#include <stdio.h>
#include <memory.h>
class Profile_Timer
{
public:
struct Elapsed_Time
{
double real_time;
double user_time;
double system_time;
};
Profile_Timer (void);
~Profile_Timer (void);
int start (void);
int stop (void);
int elapsed_time (Elapsed_Time &et);
void elapsed_rusage (prusage_t &rusage);
void get_rusage (prusage_t &rusage);
private:
void subtract (timespec_t &tdiff, timespec_t &t0, timespec_t &t1);
void compute_times (Elapsed_Time &et, prusage_t &, prusage_t &);
prusage_t begin_usage_;
prusage_t end_usage_;
prusage_t last_usage_;
int proc_fd_;
};
/* Start timing */
inline int
Profile_Timer::start (void)
{
return ::ioctl (this->proc_fd_, PIOCUSAGE, &this->begin_usage_);
}
/* Stop timing */
inline int
Profile_Timer::stop (void)
{
this->last_usage_ = this->end_usage_;
return ::ioctl (this->proc_fd_, PIOCUSAGE, &this->end_usage_);
}
#endif /* ACE_PROFILE_TIMER_H */
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