DebugTrace.h

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//
//  Copyright (C) 2014 Novartis Institutes for BioMedical Research
//
//   @@ All Rights Reserved @@
//  This file is part of the RDKit.
//  The contents are covered by the terms of the BSD license
//  which is included in the file license.txt, found at the root
//  of the RDKit source tree.
//
#include <RDGeneral/export.h>
#pragma once
#include <cstdio>
#include <cstring>
#include <cstddef>
#include <ctime>
#include <iostream>
#ifdef _MSC_VER
#define _CRT_SECURE_NO_WARNINGS
#define NOMINMAX
#include <Winsock2.h>  // for timeval
#ifdef _DEBUG          // check memory leaks
#include <crtdbg.h>
#define _CRTDBG_MAP_ALLOC
#ifndef new
#define new new (_NORMAL_BLOCK, __FILE__, __LINE__)
#endif
#endif
#else
#include <unistd.h>
#include <fcntl.h>
#include <sys/time.h>
#ifndef _WIN32
#include <sys/resource.h>
#endif
#endif
 
// SELECT ALGORITHM OPTIONS by comment some lines to exclude additional or
// experimental optimisations:
 
#define SEED_GROW_DEEP  // fast and works much times faster (but it can depend
                        // on molecules)
// #define EXCLUDE_WRONG_COMPOSITION   // fast but with a little effect, because
//  amount of external bonds usually is very small.
//  Exclude mismatched bonds combinations during seed growing (2^N-1 stage)
 
#define FAST_SUBSTRUCT_CACHE  // based on a hash of Morgan code
#define DUP_SUBSTRUCT_CACHE   // based on list of query atoms and bonds. For
                              // rings where seeds growing in both directions
                              // throw the same ring.
 
#define FAST_INCREMENTAL_MATCH  // fast and some time very useful. request
                                // PRECOMPUTED_TABLES_MATCH
// previous match result based match checking without finding new matched
// substructure location in the target
 
#define VERBOSE_STATISTICS_ON
 
#ifdef _MSC_VER
#define DELTA_EPOCH_IN_MICROSECS 11644473600000000ULL
 
struct timezone {
  int tz_minuteswest;  // minutes W of Greenwich
  int tz_dsttime;      // type of dst correction
};
 
static inline int gettimeofday(struct timeval *tv, struct timezone *tz) {
  FILETIME ft;
  unsigned __int64 tmpres = 0;
  static int tzflag;
 
  if (nullptr != tv) {
    GetSystemTimeAsFileTime(&ft);
 
    tmpres |= ft.dwHighDateTime;
    tmpres <<= 32;
    tmpres |= ft.dwLowDateTime;
 
    // converting file time to unix epoch
    tmpres -= DELTA_EPOCH_IN_MICROSECS;
    tmpres /= 10;  // convert into microseconds
    tv->tv_sec = (long)(tmpres / 1000000UL);
    tv->tv_usec = (long)(tmpres % 1000000UL);
  }
 
  if (nullptr != tz) {
    if (!tzflag) {
      _tzset();
      tzflag++;
    }
    tz->tz_minuteswest = _timezone / 60;
    tz->tz_dsttime = _daylight;
  }
  return 0;
}
#endif
 
static inline unsigned long long nanoClock(
    void) {  // actually returns microseconds
  struct timeval t;
  gettimeofday(&t, (struct timezone *)nullptr);
  return t.tv_usec + t.tv_sec * 1000000ULL;
}
 
namespace RDKit {
namespace FMCS {
 
#ifdef VERBOSE_STATISTICS_ON
 
// compute statistics of really very very fast calls.
// It a bit decrease overal performance, but might be interested for
// investigation purpose (only)
// #define VERBOSE_STATISTICS_FASTCALLS_ON
 
struct ExecStatistics {
  unsigned int TotalSteps{0}, MCSFoundStep{0};
  unsigned long long MCSFoundTime;
  unsigned int InitialSeed{0}, MismatchedInitialSeed{0};
  unsigned int Seed{0}, RemainingSizeRejected{0};
  unsigned int SeedCheck{0}, IndividualBondExcluded{0};
  unsigned int MatchCall{0}, MatchCallTrue{0};
  unsigned int FastMatchCall{0}, FastMatchCallTrue{0}, SlowMatchCallTrue{0};
  unsigned int ExactMatchCall{0}, ExactMatchCallTrue{0};  // hash cache
  unsigned int FindHashInCache{0}, HashKeyFoundInCache{0};
  unsigned int AtomCompareCalls{0}, BondCompareCalls{0};
  unsigned int AtomFunctorCalls{0}, BondFunctorCalls{0};
  unsigned int WrongCompositionRejected{0}, WrongCompositionDetected{0};
  unsigned int DupCacheFound{0}, DupCacheFoundMatch{0};
 
  ExecStatistics() : MCSFoundTime(nanoClock()) {}
};
#endif
}  // namespace FMCS
}  // namespace RDKit