zeek/src/Stats.h
2013-09-27 10:13:52 -05:00

135 lines
2.9 KiB
C++

// Classes that collect and report statistics.
#ifndef STATS_H
#define STATS_H
#include <sys/types.h>
#include <sys/time.h>
#include <sys/resource.h>
// Object called by SegmentProfiler when it is done and reports its
// cumulative CPU/memory statistics.
class SegmentStatsReporter {
public:
SegmentStatsReporter() { }
virtual ~SegmentStatsReporter() { }
virtual void SegmentProfile(const char* name, const Location* loc,
double dtime, int dmem) = 0;
};
// A SegmentProfiler tracks how much CPU and memory is consumed
// across its lifetime.
//
// ### This needs porting to Linux. It could also be improved by
// better efforts at measuring its own overhead.
class SegmentProfiler {
public:
// The constructor takes some way of identifying the segment.
SegmentProfiler(SegmentStatsReporter* arg_reporter,
const char* arg_name)
: reporter(arg_reporter), name(arg_name), loc(), initial_rusage()
{
if ( reporter )
Init();
}
SegmentProfiler(SegmentStatsReporter* arg_reporter,
const Location* arg_loc)
: reporter(arg_reporter), name(), loc(arg_loc), initial_rusage()
{
if ( reporter )
Init();
}
~SegmentProfiler()
{
if ( reporter )
Report();
}
protected:
void Init();
void Report();
SegmentStatsReporter* reporter;
const char* name;
const Location* loc;
struct rusage initial_rusage;
};
class ProfileLogger : public SegmentStatsReporter {
public:
ProfileLogger(BroFile* file, double interval);
~ProfileLogger();
void Log();
BroFile* File() { return file; }
protected:
void SegmentProfile(const char* name, const Location* loc,
double dtime, int dmem);
private:
BroFile* file;
unsigned int log_count;
};
// Generates load_sample() events.
class SampleLogger : public SegmentStatsReporter {
public:
SampleLogger();
~SampleLogger();
// These are called to report that a given function or location
// has been seen during the sampling.
void FunctionSeen(const Func* func);
void LocationSeen(const Location* loc);
protected:
void SegmentProfile(const char* name, const Location* loc,
double dtime, int dmem);
TableVal* load_samples;
};
extern ProfileLogger* profiling_logger;
extern ProfileLogger* segment_logger;
extern SampleLogger* sample_logger;
// Connection statistics.
extern int killed_by_inactivity;
// Content gap statistics.
extern uint64 tot_ack_events;
extern uint64 tot_ack_bytes;
extern uint64 tot_gap_events;
extern uint64 tot_gap_bytes;
class PacketProfiler {
public:
PacketProfiler(unsigned int mode, double freq, BroFile* arg_file);
~PacketProfiler();
static const unsigned int MODE_TIME = 1;
static const unsigned int MODE_PACKET = 2;
static const unsigned int MODE_VOLUME = 3;
void ProfilePkt(double t, unsigned int bytes);
protected:
BroFile* file;
unsigned int update_mode;
double update_freq;
double last_Utime, last_Stime, last_Rtime;
double last_timestamp, time;
unsigned int last_mem;
unsigned int pkt_cnt;
unsigned int byte_cnt;
};
#endif