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d70b3d6506
We use the SegmentProfiler in quite a few hot places and the memset of the rusage structure (144bytes here) can show up significantly even if the segment profiler itself isn't used. Relates to #3485.
137 lines
3.4 KiB
C++
137 lines
3.4 KiB
C++
// Classes that collect and report statistics.
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#pragma once
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#include "zeek/zeek-config.h"
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#include <sys/resource.h>
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#include <sys/time.h>
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#include <sys/types.h>
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#include <cstdint>
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#include <memory>
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namespace zeek {
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class File;
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class Func;
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class TableVal;
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namespace detail {
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class Location;
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// Object called by SegmentProfiler when it is done and reports its
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// cumulative CPU/memory statistics.
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class SegmentStatsReporter {
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public:
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SegmentStatsReporter() {}
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virtual ~SegmentStatsReporter() {}
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virtual void SegmentProfile(const char* name, const Location* loc, double dtime, int dmem) = 0;
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};
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// A SegmentProfiler tracks how much CPU and memory is consumed
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// across its lifetime.
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//
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// ### This needs porting to Linux. It could also be improved by
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// better efforts at measuring its own overhead.
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class SegmentProfiler {
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public:
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// The constructor takes some way of identifying the segment.
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SegmentProfiler(std::shared_ptr<SegmentStatsReporter> arg_reporter, const char* arg_name)
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: reporter(std::move(arg_reporter)), name(arg_name), loc() {
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if ( reporter )
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Init();
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}
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SegmentProfiler(std::shared_ptr<SegmentStatsReporter> arg_reporter, const Location* arg_loc)
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: reporter(std::move(arg_reporter)), name(), loc(arg_loc) {
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if ( reporter )
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Init();
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}
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~SegmentProfiler() {
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if ( reporter )
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Report();
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}
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protected:
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void Init();
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void Report();
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std::shared_ptr<SegmentStatsReporter> reporter;
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const char* name;
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const Location* loc;
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struct rusage initial_rusage;
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};
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class ProfileLogger final : public SegmentStatsReporter {
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public:
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ProfileLogger(zeek::File* file, double interval);
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~ProfileLogger() override;
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void Log();
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zeek::File* File() { return file; }
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protected:
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void SegmentProfile(const char* name, const Location* loc, double dtime, int dmem) override;
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private:
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zeek::File* file;
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unsigned int log_count;
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};
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// Generates load_sample() events.
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class SampleLogger final : public SegmentStatsReporter {
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public:
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SampleLogger();
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~SampleLogger() override;
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// These are called to report that a given function or location
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// has been seen during the sampling.
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void FunctionSeen(const Func* func);
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void LocationSeen(const Location* loc);
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protected:
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void SegmentProfile(const char* name, const Location* loc, double dtime, int dmem) override;
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TableVal* load_samples;
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};
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extern std::shared_ptr<ProfileLogger> profiling_logger;
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extern std::shared_ptr<ProfileLogger> segment_logger;
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extern std::shared_ptr<SampleLogger> sample_logger;
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// Connection statistics.
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extern uint64_t killed_by_inactivity;
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// Content gap statistics.
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extern uint64_t tot_ack_events;
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extern uint64_t tot_ack_bytes;
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extern uint64_t tot_gap_events;
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extern uint64_t tot_gap_bytes;
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class PacketProfiler {
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public:
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PacketProfiler(unsigned int mode, double freq, File* arg_file);
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~PacketProfiler();
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static const unsigned int MODE_TIME = 1;
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static const unsigned int MODE_PACKET = 2;
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static const unsigned int MODE_VOLUME = 3;
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void ProfilePkt(double t, unsigned int bytes);
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protected:
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File* file;
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unsigned int update_mode;
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double update_freq;
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double last_Utime, last_Stime, last_Rtime;
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double last_timestamp, time;
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uint64_t last_mem;
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uint64_t pkt_cnt;
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uint64_t byte_cnt;
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};
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} // namespace detail
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} // namespace zeek
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