annotate audioDB.cpp @ 400:8c7453fb5bd9 api-inversion

Invert audioDB::power_flag / audiodb_power()

Here the exciting discovery is that the mmap(), memcpy(), munmap()
sequence is in fact not safe.  In principle an msync() call should be
inserted before unmapping for in-core changes to mmap()ed files to be
flushed to disk.

In this case we work around the problem entirely, by not mmap()ing
anything and doing everything with file descriptors.  Amusingly, that's
probably not desperately safe either, this time because we have to move
the file descriptor position (which is also a shared resource).  dup()
doesn't save us, as the duplicate file descriptor shares a file
position.

This applies also to the filling of data_buffer in the query loop, and
in fact basically any call to lseek(), which is why I'm not fixing it
now.  Solution: if you have multiple threads all acting at once on a
single database, do one audiodb_open() per thread, for now at least.

#include "audioDB.h"
extern "C" {
#include "audioDB_API.h"
}

LSH* SERVER_LSH_INDEX_SINGLETON;
char* SERVER_ADB_ROOT;
char* SERVER_ADB_FEATURE_ROOT;

PointPair::PointPair(Uns32T a, Uns32T b, Uns32T c):trackID(a),qpos(b),spos(c){};

bool operator<(const PointPair& a, const PointPair& b){
  return ( (a.trackID<b.trackID) ||
	   ( (a.trackID==b.trackID) &&  
	     ( (a.spos<b.spos) || ( (a.spos==b.spos) && (a.qpos < b.qpos) )) ) );
}

bool operator>(const PointPair& a, const PointPair& b){
  return ( (a.trackID>b.trackID) ||
	   ( (a.trackID==b.trackID) &&  
	     ( (a.spos>b.spos) || ( (a.spos==b.spos) && (a.qpos > b.qpos) )) ) );
}

bool operator==(const PointPair& a, const PointPair& b){
  return ( (a.trackID==b.trackID) && (a.qpos==b.qpos) && (a.spos==b.spos) );
}

audioDB::audioDB(const unsigned argc, const char *argv[]): O2_AUDIODB_INITIALIZERS
{
  if(processArgs(argc, argv)<0){
    printf("No command found.\n");
    cmdline_parser_print_version ();
    if (strlen(gengetopt_args_info_purpose) > 0)
      printf("%s\n", gengetopt_args_info_purpose);
    printf("%s\n", gengetopt_args_info_usage);
    printf("%s\n", gengetopt_args_info_help[1]);
    printf("%s\n", gengetopt_args_info_help[2]);
    printf("%s\n", gengetopt_args_info_help[0]);
    error("No command found");
  }

  // Perform database prefix substitution
  if(dbName && adb_root)
    prefix_name((char** const)&dbName, adb_root);

  if(O2_ACTION(COM_SERVER))
#ifdef LIBRARY
    ;
#else
    startServer();
#endif

  else  if(O2_ACTION(COM_CREATE))
    create(dbName);

  else if(O2_ACTION(COM_INSERT))
    insert(dbName, inFile);

  else if(O2_ACTION(COM_BATCHINSERT))
    batchinsert(dbName, inFile);

  else if(O2_ACTION(COM_QUERY))
    if(isClient){
#ifdef LIBRARY
      ;
#else
      if(query_from_key){
	VERB_LOG(1, "Calling web services query %s on database %s, query=%s\n", radius>0?"(Radius)":"(NN)", dbName, (key&&strlen(key))?key:inFile);
	ws_query_by_key(dbName, key, inFile, (char*)hostport);	
      }
      else{
	VERB_LOG(1, "Calling web services query on database %s, query=%s\n", dbName, (key&&strlen(key))?key:inFile);
	ws_query(dbName, inFile, (char*)hostport);
      }
#endif
    }
    else
      query(dbName, inFile);

  else if(O2_ACTION(COM_STATUS))
    if(isClient)
#ifdef LIBRARY
      ;
#else
      ws_status(dbName,(char*)hostport);
#endif
    else
      status(dbName);

  else if(O2_ACTION(COM_SAMPLE))
    sample(dbName);
  
  else if(O2_ACTION(COM_L2NORM))
    l2norm(dbName);
  
  else if(O2_ACTION(COM_POWER))
    power_flag(dbName);

  else if(O2_ACTION(COM_DUMP))
    dump(dbName);

  else if(O2_ACTION(COM_LISZT))
    if(isClient)
#ifdef LIBRARY
      ;
#else 
      ws_liszt(dbName, (char*) hostport);
#endif
    else
      liszt(dbName, lisztOffset, lisztLength);

  else if(O2_ACTION(COM_INDEX))
    index_index_db(dbName);
  
  else
    error("Unrecognized command",command);
}

audioDB::audioDB(const unsigned argc, const char *argv[], adb__queryResponse *adbQueryResponse): O2_AUDIODB_INITIALIZERS
{
  try {
    isServer = 1; // Set to make errors report over SOAP
    processArgs(argc, argv);
    // Perform database prefix substitution
    if(dbName && adb_root)
      prefix_name((char** const)&dbName, adb_root);
    assert(O2_ACTION(COM_QUERY));
    query(dbName, inFile, adbQueryResponse);
  } catch(char *err) {
    cleanup();
    throw(err);
  }
}

audioDB::audioDB(const unsigned argc, const char *argv[], adb__statusResponse *adbStatusResponse): O2_AUDIODB_INITIALIZERS
{
  try {
    isServer = 1; // Set to make errors report over SOAP
    processArgs(argc, argv);
    // Perform database prefix substitution
    if(dbName && adb_root)
      prefix_name((char** const)&dbName, adb_root);
    assert(O2_ACTION(COM_STATUS));
    status(dbName, adbStatusResponse);
  } catch(char *err) {
    cleanup();
    throw(err);
  }
}

audioDB::audioDB(const unsigned argc, const char *argv[], adb__lisztResponse *adbLisztResponse): O2_AUDIODB_INITIALIZERS
{
  try {
    isServer = 1; // Set to make errors report over SOAP
    processArgs(argc, argv); 
    // Perform database prefix substitution
    if(dbName && adb_root)
      prefix_name((char** const)&dbName, adb_root);
    assert(O2_ACTION(COM_LISZT));
    liszt(dbName, lisztOffset, lisztLength, adbLisztResponse);
  } catch(char *err) {
    cleanup();
    throw(err);
  }
}


//for the lib / API
audioDB::audioDB(const unsigned argc, const char *argv[], int * apierror, adb_t *a): O2_AUDIODB_INITIALIZERS
{

    try {
        UseApiError=1;
	adb = a;

        if(processArgs(argc, argv)<0){
            printf("No command found.\n");
            cmdline_parser_print_version ();
            if (strlen(gengetopt_args_info_purpose) > 0)
                printf("%s\n", gengetopt_args_info_purpose);
            printf("%s\n", gengetopt_args_info_usage);
            printf("%s\n", gengetopt_args_info_help[1]);
            printf("%s\n", gengetopt_args_info_help[2]);
            printf("%s\n", gengetopt_args_info_help[0]);
            error("No command found");
        }

        adb__queryResponse adbq;

        if(O2_ACTION(COM_CREATE))
            create(dbName);

        else if(O2_ACTION(COM_INSERT))
            insert(dbName, inFile);

        else if(O2_ACTION(COM_BATCHINSERT))
            batchinsert(dbName, inFile);

        else if(O2_ACTION(COM_QUERY))
            if(isClient)
                ;//ws_query(dbName, inFile, (char*)hostport);
            else
                query(dbName, inFile, &adbq);
        //query(dbName, inFile);

        else if(O2_ACTION(COM_STATUS))
            if(isClient)
                ;//ws_status(dbName,(char*)hostport);
            else
                status(dbName);

        else if(O2_ACTION(COM_L2NORM))
            l2norm(dbName);

        else if(O2_ACTION(COM_POWER))
            power_flag(dbName);

        else if(O2_ACTION(COM_DUMP))
            dump(dbName);

        else
            error("Unrecognized command",command);

    } catch(int a) {
        *apierror=a;
        return;

    }
    *apierror=apierrortemp;
    return;

}

//for API query
audioDB::audioDB(const unsigned argc, const char *argv[],adb__queryResponse *adbQueryResponse, int * apierror, adb_t *a): O2_AUDIODB_INITIALIZERS
{

    try {
        UseApiError=1;
	adb = a;

        if(processArgs(argc, argv)<0){
            printf("No command found.\n");
            cmdline_parser_print_version ();
            if (strlen(gengetopt_args_info_purpose) > 0)
                printf("%s\n", gengetopt_args_info_purpose);
            printf("%s\n", gengetopt_args_info_usage);
            printf("%s\n", gengetopt_args_info_help[1]);
            printf("%s\n", gengetopt_args_info_help[2]);
            printf("%s\n", gengetopt_args_info_help[0]);
            error("No command found");
        }

        query(dbName, inFile, adbQueryResponse);

    } catch(int a) {
        *apierror=a;
        return;

    }
    *apierror=apierrortemp;
    return;

}

void audioDB::cleanup() {
  cmdline_parser_free(&args_info);
  if(indata)
    munmap(indata,statbuf.st_size);
  if(db)
    munmap(db,getpagesize());
  if(fileTable)
    munmap(fileTable, fileTableLength);
  if(trackTable)
    munmap(trackTable, trackTableLength);
  if(dataBuf)
    munmap(dataBuf, dataBufLength);
  if(timesTable)
    munmap(timesTable, timesTableLength);
  if(powerTable)
    munmap(powerTable, powerTableLength);
  if(l2normTable)
    munmap(l2normTable, l2normTableLength);
  if(featureFileNameTable)
    munmap(featureFileNameTable, fileTableLength);
  if(timesFileNameTable)
    munmap(timesFileNameTable, fileTableLength);
  if(powerFileNameTable)
    munmap(powerFileNameTable, fileTableLength);
  if(trackOffsetTable)
    delete [] trackOffsetTable;
  if(reporter)
    delete reporter;
  if(exact_evaluation_queue)
    delete exact_evaluation_queue;
  if(rng)
    gsl_rng_free(rng);
  if(vv)
    delete vv;
  if(infid>0)
    close(infid);
  if(adb && !UseApiError) {
    audiodb_close(adb);
    adb = NULL;
  }
  if(lsh!=SERVER_LSH_INDEX_SINGLETON)
    delete lsh;
}

audioDB::~audioDB(){
  cleanup();
}

int audioDB::processArgs(const unsigned argc, const char *argv[]){

  if(argc<2){
    cmdline_parser_print_version ();
    if (strlen(gengetopt_args_info_purpose) > 0)
      printf("%s\n", gengetopt_args_info_purpose);
    printf("%s\n", gengetopt_args_info_usage);
    printf("%s\n", gengetopt_args_info_help[1]);
    printf("%s\n", gengetopt_args_info_help[2]);
    printf("%s\n", gengetopt_args_info_help[0]);
    exit(0);
  }

  /* KLUDGE: gengetopt generates a function which is not completely
     const-clean in its declaration.  We cast argv here to keep the
     compiler happy.  -- CSR, 2008-10-08 */
  if (cmdline_parser (argc, (char *const *) argv, &args_info) != 0)
    error("Error parsing command line");

  if(args_info.help_given){
    cmdline_parser_print_help();
    exit(0);
  }

  if(args_info.verbosity_given){
    verbosity = args_info.verbosity_arg;
    if(verbosity < 0 || verbosity > 10){
      std::cerr << "Warning: verbosity out of range, setting to 1" << std::endl;
      verbosity = 1;
    }
  }

  if(args_info.size_given) {
    if(args_info.datasize_given) {
      error("both --size and --datasize given", "");
    }
    if(args_info.ntracks_given) {
      error("both --size and --ntracks given", "");
    }
    if(args_info.datadim_given) {
      error("both --size and --datadim given", "");
    }
    if (args_info.size_arg < 50 || args_info.size_arg > 32000) {
      error("Size out of range", "");
    }
    double ratio = (double) args_info.size_arg * 1000000 / ((double) O2_DEFAULTDBSIZE);
    /* FIXME: what's the safe way of doing this? */
    datasize = (unsigned int) ceil(datasize * ratio);
    ntracks = (unsigned int) ceil(ntracks * ratio);
  } else {
    if(args_info.datasize_given) {
      datasize = args_info.datasize_arg;
    }
    if(args_info.ntracks_given) {
      ntracks = args_info.ntracks_arg;
    }
    if(args_info.datadim_given) {
      datadim = args_info.datadim_arg;
    }
  }

  if(args_info.radius_given) {
    radius = args_info.radius_arg;
    if(radius < 0 || radius > 1000000000) {
      error("radius out of range");
    } else {
      VERB_LOG(3, "Setting radius to %f\n", radius);
    }
  }
  
  sequenceLength = args_info.sequencelength_arg;
  if(sequenceLength < 1 || sequenceLength > 1000) {
    error("seqlen out of range: 1 <= seqlen <= 1000");
  }
  sequenceHop = args_info.sequencehop_arg;
  if(sequenceHop < 1 || sequenceHop > 1000) {
    error("seqhop out of range: 1 <= seqhop <= 1000");
  }
  
  if (args_info.absolute_threshold_given) {
    if (args_info.absolute_threshold_arg >= 0) {
      error("absolute threshold out of range: should be negative");
    }
    use_absolute_threshold = true;
    absolute_threshold = args_info.absolute_threshold_arg;
  }
  if (args_info.relative_threshold_given) {
    use_relative_threshold = true;
    relative_threshold = args_info.relative_threshold_arg;
  }

  if (args_info.adb_root_given){
    adb_root = args_info.adb_root_arg;
  }

  if (args_info.adb_feature_root_given){
    adb_feature_root = args_info.adb_feature_root_arg;
  }

  // perform dbName path prefix SERVER-side subsitution
  if(SERVER_ADB_ROOT && !adb_root)
    adb_root = SERVER_ADB_ROOT;
  if(SERVER_ADB_FEATURE_ROOT && !adb_feature_root)
    adb_feature_root = SERVER_ADB_FEATURE_ROOT;

  if(args_info.SERVER_given){
    command=COM_SERVER;
    port=args_info.SERVER_arg;
    if(port<100 || port > 100000)
      error("port out of range");
#if defined(O2_DEBUG)
    struct sigaction sa;
    sa.sa_sigaction = sigterm_action;
    sa.sa_flags = SA_SIGINFO | SA_RESTART | SA_NODEFER;
    sigaction(SIGTERM, &sa, NULL);
    sa.sa_sigaction = sighup_action;
    sa.sa_flags = SA_SIGINFO | SA_RESTART | SA_NODEFER;
    sigaction(SIGHUP, &sa, NULL);
#endif
    if(args_info.load_index_given){
      if(!args_info.database_given)
	error("load_index requires a --database argument");
      else
	dbName=args_info.database_arg;
      if(!args_info.radius_given)
	error("load_index requires a --radius argument");
      if(!args_info.sequencelength_given)
	error("load_index requires a --sequenceLength argument");
      WS_load_index = true;
    }
    return 0;
  }

  // No return on client command, find database command
  if(args_info.client_given){
    command=COM_CLIENT;
    hostport=args_info.client_arg;
    isClient=1;
  }

  if(args_info.NEW_given){
    command=COM_CREATE;
    dbName=args_info.database_arg;
    return 0;
  }

  if(args_info.STATUS_given){
    command=COM_STATUS;
    dbName=args_info.database_arg;
    return 0;
  }

  if(args_info.SAMPLE_given) {
    command = COM_SAMPLE;
    dbName = args_info.database_arg;
    sequenceLength = args_info.sequencelength_arg;
    if(sequenceLength < 1 || sequenceLength > 1000) {
      error("seqlen out of range: 1 <= seqlen <= 1000");
    }
    nsamples = args_info.nsamples_arg;
    return 0;
  }

  if(args_info.DUMP_given){
    command=COM_DUMP;
    dbName=args_info.database_arg;
    output = args_info.output_arg;
    return 0;
  }

  if(args_info.L2NORM_given){
    command=COM_L2NORM;
    dbName=args_info.database_arg;
    return 0;
  }
       
  if(args_info.POWER_given){
    command=COM_POWER;
    dbName=args_info.database_arg;
    return 0;
  }
       
  if(args_info.INSERT_given) {
    command=COM_INSERT;
    dbName=args_info.database_arg;
    inFile=args_info.features_arg;
    if(args_info.key_given) {
      if(!args_info.features_given) {
	error("INSERT: '-k key' argument depends on '-f features'");
      } else {
	key=args_info.key_arg;
      }
    }
    if(args_info.times_given) {
      timesFileName=args_info.times_arg;
      if(strlen(timesFileName)>0) {
        if(!(timesFile = new std::ifstream(timesFileName,std::ios::in))) {
          error("Could not open times file for reading", timesFileName);
	}
        usingTimes=1;
      }
    }
    if (args_info.power_given) {
      powerFileName = args_info.power_arg;
      if (strlen(powerFileName) > 0) {
        if (!(powerfd = open(powerFileName, O_RDONLY))) {
          error("Could not open power file for reading", powerFileName, "open");
        }
        usingPower = 1;
      }
    }    
    return 0;
  }
  
  if(args_info.BATCHINSERT_given) {
    command=COM_BATCHINSERT;
    dbName=args_info.database_arg;
    inFile=args_info.featureList_arg;
    if(args_info.keyList_given) {
      if(!args_info.featureList_given) {
	error("BATCHINSERT: '-K keyList' argument depends on '-F featureList'");
      } else {
	key=args_info.keyList_arg;     // INCONSISTENT NO CHECK
      }
    }
    /* TO DO: REPLACE WITH
      if(args_info.keyList_given){
      trackFileName=args_info.keyList_arg;
      if(strlen(trackFileName)>0 && !(trackFile = new std::ifstream(trackFileName,std::ios::in)))
      error("Could not open keyList file for reading",trackFileName);
      }
      AND UPDATE BATCHINSERT()
    */
    
    if(args_info.timesList_given) {
      timesFileName=args_info.timesList_arg;
      if(strlen(timesFileName)>0) {
        if(!(timesFile = new std::ifstream(timesFileName,std::ios::in)))
          error("Could not open timesList file for reading", timesFileName);
        usingTimes=1;
      }
    }
    if(args_info.powerList_given) {
      powerFileName=args_info.powerList_arg;
      if(strlen(powerFileName)>0) {
        if(!(powerFile = new std::ifstream(powerFileName,std::ios::in)))
          error("Could not open powerList file for reading", powerFileName);
        usingPower=1;
      }
    }
    return 0;
  }

  // Set no_unit_norm flag  
  no_unit_norming = args_info.no_unit_norming_flag;
  lsh_use_u_functions = args_info.lsh_use_u_functions_flag;

  // LSH Index Command
  if(args_info.INDEX_given){
    if(radius <= 0 )
      error("INDEXing requires a Radius argument");
    if(!(sequenceLength>0 && sequenceLength <= O2_MAXSEQLEN))
      error("INDEXing requires 1 <= sequenceLength <= 1000");
    command=COM_INDEX;
    if(!args_info.database_given)
      error("INDEXing requires a database");
    dbName=args_info.database_arg;

    // Whether to store LSH hash tables for query in core (FORMAT2)
    lsh_in_core = !args_info.lsh_on_disk_flag; // This flag is set to 0 if on_disk requested

    lsh_param_w = args_info.lsh_w_arg;
    if(!(lsh_param_w>0 && lsh_param_w<=O2_SERIAL_MAX_BINWIDTH))
      error("Indexing parameter w out of range (0.0 < w <= 100.0)");

    lsh_param_k = args_info.lsh_k_arg;      
    if(!(lsh_param_k>0 && lsh_param_k<=O2_SERIAL_MAX_FUNS))
      error("Indexing parameter k out of range (1 <= k <= 100)");

    lsh_param_m = args_info.lsh_m_arg;
    if(!(lsh_param_m>0 && lsh_param_m<= (1 + (sqrt(1 + O2_SERIAL_MAX_TABLES*8.0)))/2.0))
      error("Indexing parameter m out of range (1 <= m <= 20)");

    lsh_param_N = args_info.lsh_N_arg;    
    if(!(lsh_param_N>0 && lsh_param_N<=O2_SERIAL_MAX_ROWS))
      error("Indexing parameter N out of range (1 <= N <= 1000000)");
    
    lsh_param_b = args_info.lsh_b_arg;
    if(!(lsh_param_b>0 && lsh_param_b<=O2_SERIAL_MAX_TRACKBATCH))
      error("Indexing parameter b out of range (1 <= b <= 10000)");
    
    lsh_param_ncols = args_info.lsh_ncols_arg;    
    if(lsh_in_core) // We don't want to block rows with FORMAT2 indexing
      lsh_param_ncols = O2_SERIAL_MAX_COLS;
    if( !(lsh_param_ncols>0 && lsh_param_ncols<=O2_SERIAL_MAX_COLS))
      error("Indexing parameter ncols out of range (1 <= ncols <= 1000");

    return 0;
  }

  // Query command and arguments
  if(args_info.QUERY_given){
    command=COM_QUERY;
    dbName=args_info.database_arg;
    // XOR features and key search
    if((!args_info.features_given && !args_info.key_given) || (args_info.features_given && args_info.key_given))
      error("QUERY requires exactly one of either -f features or -k key");
    if(args_info.features_given)
      inFile=args_info.features_arg; // query from file
    else{
      query_from_key = true;
      key=args_info.key_arg;      // query from key
    }

    if(args_info.keyList_given){
      trackFileName=args_info.keyList_arg;
      if(strlen(trackFileName)>0 && !(trackFile = new std::ifstream(trackFileName,std::ios::in)))
        error("Could not open keyList file for reading",trackFileName);
    }
    
    if(args_info.times_given){
      timesFileName=args_info.times_arg;
      if(strlen(timesFileName)>0){
        if(!(timesFile = new std::ifstream(timesFileName,std::ios::in)))
          error("Could not open times file for reading", timesFileName);
        usingTimes=1;
      }
    }

    if(args_info.power_given){
      powerFileName=args_info.power_arg;
      if(strlen(powerFileName)>0){
        if (!(powerfd = open(powerFileName, O_RDONLY))) {
          error("Could not open power file for reading", powerFileName, "open");
        }
        usingPower = 1;
      }
    }
    
    // query type
    if(strncmp(args_info.QUERY_arg, "track", MAXSTR)==0)
      queryType=O2_TRACK_QUERY;
    else if(strncmp(args_info.QUERY_arg, "point", MAXSTR)==0)
      queryType=O2_POINT_QUERY;
    else if(strncmp(args_info.QUERY_arg, "sequence", MAXSTR)==0)
      queryType=O2_SEQUENCE_QUERY;
    else if(strncmp(args_info.QUERY_arg, "nsequence", MAXSTR)==0)
      queryType=O2_N_SEQUENCE_QUERY;
    else if(strncmp(args_info.QUERY_arg, "onetoonensequence", MAXSTR)==0)
      queryType=O2_ONE_TO_ONE_N_SEQUENCE_QUERY;
    else
      error("unsupported query type",args_info.QUERY_arg);
    
    if(!args_info.exhaustive_flag){
      queryPoint = args_info.qpoint_arg;
      usingQueryPoint=1;
      if(queryPoint<0 || queryPoint >10000)
        error("queryPoint out of range: 0 <= queryPoint <= 10000");
    }

    // Whether to pre-load LSH hash tables for query (default on, if flag set then off)
    lsh_in_core = !args_info.lsh_on_disk_flag;

    // Whether to perform exact evaluation of points returned by LSH
    lsh_exact = args_info.lsh_exact_flag;

    pointNN = args_info.pointnn_arg;
    if(pointNN < 1 || pointNN > O2_MAXNN) {
      error("pointNN out of range: 1 <= pointNN <= 1000000");
    }
    trackNN = args_info.resultlength_arg;
    if(trackNN < 1 || trackNN > O2_MAXNN) {
      error("resultlength out of range: 1 <= resultlength <= 1000000");
    }
    return 0;
  }
  
  if(args_info.LISZT_given){
    command = COM_LISZT;
    dbName=args_info.database_arg;
    lisztOffset = args_info.lisztOffset_arg;
    lisztLength = args_info.lisztLength_arg;
    if(args_info.lisztOffset_arg<0) // check upper bound later when database is opened
      error("lisztOffset cannot be negative");
    if(args_info.lisztLength_arg<0)
      error("lisztLength cannot be negative");
    if(lisztLength >1000000)
      error("lisztLength too large (>1000000)");
    return 0;
  }
  
  return -1; // no command found
}

void audioDB::status(const char* dbName, adb__statusResponse *adbStatusResponse){
  adb_status_t status;
  if(!adb) {
    if(!(adb = audiodb_open(dbName, O_RDONLY))) {
      error("Failed to open database file", dbName);
    }
  }
  if(audiodb_status(adb, &status)) {
    error("Failed to retrieve database status", dbName);
  }
  
  if(adbStatusResponse == 0) {
    std::cout << "num files:" << status.numFiles << std::endl;
    std::cout << "data dim:" << status.dim <<std::endl;
    if(status.dim > 0) {
      size_t bytes_per_vector = sizeof(double) * status.dim;
      off_t nvectors = status.length / bytes_per_vector;
      off_t data_region_vectors = status.data_region_size / bytes_per_vector;
      std::cout << "total vectors:" << nvectors << std::endl;
      std::cout << "vectors available:";
      if(status.flags & O2_FLAG_LARGE_ADB) {
	std::cout << O2_MAX_VECTORS - nvectors << std::endl;
      } else {
	std::cout << data_region_vectors - nvectors << std::endl;
      }
    }
    if(!(status.flags & O2_FLAG_LARGE_ADB)) {
      double used_frac = ((double) status.length) / status.data_region_size;
      std::cout << "total bytes:" << status.length << 
	" (" << (100.0*used_frac) << "%)" << std::endl;
      std::cout << "bytes available:" << status.data_region_size - status.length << 
	" (" << (100.0*(1-used_frac)) << "%)" << std::endl;
    }
    std::cout << "flags:" << " l2norm[" << DISPLAY_FLAG(status.flags&O2_FLAG_L2NORM)
	      << "] minmax[" << DISPLAY_FLAG(status.flags&O2_FLAG_MINMAX)
	      << "] power[" << DISPLAY_FLAG(status.flags&O2_FLAG_POWER)
	      << "] times[" << DISPLAY_FLAG(status.flags&O2_FLAG_TIMES) 
	      << "] largeADB[" << DISPLAY_FLAG(status.flags&O2_FLAG_LARGE_ADB)
	      << "]" << endl;    
              
    std::cout << "null count: " << status.nullCount << " small sequence count " << status.dudCount-status.nullCount << std::endl;    
  } else {
    adbStatusResponse->result.numFiles = status.numFiles;
    adbStatusResponse->result.dim = status.dim;
    adbStatusResponse->result.length = status.length;
    adbStatusResponse->result.dudCount = status.dudCount;
    adbStatusResponse->result.nullCount = status.nullCount;
    adbStatusResponse->result.flags = status.flags;
  }
}

void audioDB::l2norm(const char* dbName) {
  forWrite = true;
  initTables(dbName, 0);
  if( !(dbH->flags & O2_FLAG_LARGE_ADB ) && (dbH->length>0) ){
    /* FIXME: should probably be uint64_t */
    unsigned numVectors = dbH->length/(sizeof(double)*dbH->dim);
    CHECKED_MMAP(double *, dataBuf, dbH->dataOffset, dataBufLength);
    unitNormAndInsertL2(dataBuf, dbH->dim, numVectors, 0); // No append
  }
  // Update database flags
  dbH->flags = dbH->flags|O2_FLAG_L2NORM;
  memcpy (db, dbH, O2_HEADERSIZE);
}

void audioDB::power_flag(const char *dbName) {
  if(!adb) {
    if(!(adb = audiodb_open(dbName, O_RDWR))) {
      error("Failed to open database file", dbName);
    }
  }
  if(audiodb_power(adb)) {
    error("can't turn on power flag for database", dbName);
  }
}

void audioDB::create(const char *dbName) {
  if(adb) {
    error("Already have an adb in this object", "");
  }
  if(!(adb = audiodb_create(dbName, datasize, ntracks, datadim))) {
    error("Failed to create database file", dbName);
  }
}

void audioDB::dump(const char *dbName) {
  if(!adb) {
    if(!(adb = audiodb_open(dbName, O_RDONLY))) {
      error("Failed to open database file", dbName);
    }
  }
  if(audiodb_dump(adb, output)) {
    error("Failed to dump database to ", output);
  }
  status(dbName);
}
// Unit norm block of features

/* FIXME: in fact this does not unit norm a block of features, it just
   records the L2 norms somewhere.  unitNorm() does in fact unit norm
   a block of features. */
void audioDB::unitNormAndInsertL2(double* X, unsigned dim, unsigned n, unsigned append=0){
  unsigned d;
  double *p;
  unsigned nn = n;

  assert(l2normTable);

  if( !(dbH->flags & O2_FLAG_LARGE_ADB) && !append && (dbH->flags & O2_FLAG_L2NORM) )
    error("Database is already L2 normed", "automatic norm on insert is enabled");

  VERB_LOG(2, "norming %u vectors...", n);

  double* l2buf = new double[n];
  double* l2ptr = l2buf;
  assert(l2buf);
  assert(X);

  while(nn--){
    p=X;
    *l2ptr=0.0;
    d=dim;
    while(d--){
      *l2ptr+=*p**p;
      p++;
    }
    l2ptr++;
    X+=dim;
  }
  unsigned offset;
  if(append) {
    // FIXME: a hack, a very palpable hack: the vectors have already
    // been inserted, and dbH->length has already been updated.  We
    // need to subtract off again the number of vectors that we've
    // inserted this time...
    offset=(dbH->length/(dbH->dim*sizeof(double)))-n; // number of vectors
  } else {
    offset=0;
  }
  memcpy(l2normTable+offset, l2buf, n*sizeof(double));
  if(l2buf)
    delete[] l2buf;
  VERB_LOG(2, " done.");
}

// This entry point is visited once per instance
// so it is a good place to set any global state variables
int main(const int argc, const char* argv[]){
  SERVER_LSH_INDEX_SINGLETON = 0; // Initialize global variables
  SERVER_ADB_ROOT = 0;            // Server-side database root prefix
  SERVER_ADB_FEATURE_ROOT = 0;    // Server-side features root prefix
  audioDB(argc, argv);
}


extern "C" {

/* for API questions contact 
 * Christophe Rhodes [e-mail]
 * Ian Knopke [e-mail], [e-mail] */

  int audiodb_insert(adb_ptr mydb, adb_insert_ptr ins) {
    const char *argv[15];
    int argvctr=0;
    int apierror=0;

    argv[argvctr++]="audioDB";
    argv[argvctr++]="-I";
    argv[argvctr++]="-d";
    argv[argvctr++]=mydb->path;
    argv[argvctr++]="-f";
    argv[argvctr++]=ins->features;

    if (ins->times){
        argv[argvctr++]="--times";
        argv[argvctr++]=ins->times;
    }

    if (ins->power){
        argv[argvctr++]="-w";
        argv[argvctr++]=ins->power;
    }

    if (ins->key){
        argv[argvctr++]="--key";
        argv[argvctr++]=ins->key;
    }
    argv[argvctr]='\0';

    audioDB::audioDB(argvctr,argv,&apierror,mydb);
    return apierror;
  }


  int audiodb_batchinsert(adb_ptr mydb, adb_insert_ptr ins, unsigned int size) {

    const char *argv[22];
    int argvctr=0;
    unsigned int i=0;
    char tempfeaturename[]="tempfeatureXXXXXX";
    char temppowername[]="temppowerXXXXXX";
    char tempkeyname[]="tempkeyXXXXXX";
    char temptimesname[]="temptimesXXXXXX";
    int tempfeaturefd = -1;
    int temppowerfd = -1;
    int tempkeyfd = -1;
    int temptimesfd = -1;

    int flags[4]={0};
    int apierror=0;

    /*  So the final API should take an array of structs. However, the current 
    *   version requires four separate text files. So temporarily, we need to
    *   unpack the struct array, make four separate text files, and then reinsert
    *   them into the command-line call. This should change as soon as possible */


    argv[argvctr++]="audioDB";
    argv[argvctr++]="-B";
    argv[argvctr++]="-d";
    argv[argvctr++]=mydb->path;


    /* assume struct is well formed for all entries */
    if (ins[0].features){ flags[0]++;} else {
        /* short circuit the case where there are no features in the structs */
        return -1;
    } ;
    if (ins[0].power){ flags[1]++;};
    if (ins[0].key){ flags[2]++;};
    if (ins[0].times){ flags[3]++;};


    /* make four temp files */
    if ((tempfeaturefd = mkstemp(tempfeaturename)) == -1)
      goto error;
    if ((temppowerfd = mkstemp(temppowername)) == -1)
      goto error;
    if ((tempkeyfd=mkstemp(tempkeyname)) == -1)
      goto error;
    if ((temptimesfd=mkstemp(temptimesname)) == -1)
      goto error;

    /* Ok, so we should have a working set of files to write to */ 
    /* I'm going to assume that the same format is kept for all structs in the array */
    /* That is, each struct should be correctly formed, and contain at least a features file, because I'm just going to pass the terms along to the text files */
    for (i = 0; i < size; i++) {
      if (write(tempfeaturefd,ins[i].features,strlen(ins[i].features)) != (ssize_t) strlen(ins[i].features))
	goto error;
      if (write(tempfeaturefd,"\n",1) != 1)
	goto error;

      if (flags[1]) {
	if (write(temppowerfd,ins[i].power,strlen(ins[i].power)) != (ssize_t) strlen(ins[i].power))
	  goto error;
	if (write(temppowerfd,"\n",1) != 1)
	  goto error;
      }
      if (flags[2]) {
	if (write(tempkeyfd,ins[i].key,strlen(ins[i].key)) != (ssize_t) strlen(ins[i].key))
	  goto error;
	if (write(tempkeyfd,"\n",1) != 1)
	  goto error;
      }
      if (flags[3]) {
	if (write(temptimesfd,ins[i].times,strlen(ins[i].times)) != (ssize_t) strlen(ins[i].times))
	  goto error;
	if (write(temptimesfd,"\n",1) != 1)
	  goto error;
      }
    }

    argv[argvctr++]="-F";
    argv[argvctr++]=tempfeaturename;
    close(tempfeaturefd);
    close(temppowerfd);
    close(tempkeyfd);
    close(temptimesfd);

    if (flags[1]){
        argv[argvctr++]="--powerList";
        argv[argvctr++]=temppowername;
    }

    if (flags[2]){
        argv[argvctr++]="--keyList";
        argv[argvctr++]=tempkeyname;
    }

    if (flags[3]){
        argv[argvctr++]="--timesList";
        argv[argvctr++]=temptimesname;
    }

    argv[argvctr]='\0';

    audioDB::audioDB(argvctr,argv,&apierror,mydb);

    remove(tempfeaturename);
    remove(temppowername);
    remove(tempkeyname);
    remove(temptimesname);


    return apierror;

  error:
    if(tempfeaturefd != -1) {
      close(tempfeaturefd);
      remove(tempfeaturename);
    }
    if(temppowerfd != -1) {
      close(temppowerfd);
      remove(temppowername);
    }
    if(tempkeyfd != -1) {
      close(tempkeyfd);
      remove(tempkeyname);
    }
    if(temptimesfd != -1) {
      close(temptimesfd);
      remove(temptimesname);
    }
    return -1;
  }


  int audiodb_query(adb_ptr mydb, adb_query_ptr adbq, adb_queryresult_ptr adbqr){

    const char *argv[32];
    int argvctr=0;
    char tempstr1[200];
    char tempstr2[200];
    char tempstr3[200];
    int apierror=0;

    adb__queryResponse adbQueryResponse; 

    /* TODO: may need error checking here */
    /* currently counting on audioDB binary to fail for me */
    argv[argvctr++]="audioDB";
    
    if(adbq->querytype){
        argv[argvctr++]="-Q";
        argv[argvctr++]=adbq->querytype;
    }

    if(mydb->path){
        argv[argvctr++]="-d";
        argv[argvctr++]=mydb->path;
    }

    if (adbq->feature){
        argv[argvctr++]="-f";
        argv[argvctr++]=adbq->feature;
    }

    if (adbq->power){
        argv[argvctr++]="-w";
        argv[argvctr++]=adbq->power;
    }

    if (adbq->qpoint){
        argv[argvctr++]="-p";
        argv[argvctr++]=adbq->qpoint;
    }
    if (adbq->numpoints){
        argv[argvctr++]="-n";
        argv[argvctr++]=adbq->numpoints;
    }
    if (adbq->radius){
        argv[argvctr++]="-R";
        argv[argvctr++]=adbq->radius;
    }
    if(adbq->resultlength){
        argv[argvctr++]="-r";
        argv[argvctr++]=adbq->resultlength;
    }
    if(adbq->sequencelength){
        argv[argvctr++]="-l";
        argv[argvctr++]=adbq->sequencelength;
    }
    if(adbq->sequencehop){
        argv[argvctr++]="-h";
        argv[argvctr++]=adbq->sequencehop;
    }

    if (adbq->absolute_threshold){
        argv[argvctr++]="--absolute-threshold";
        snprintf(tempstr1,sizeof(tempstr1),"%f",adbq->absolute_threshold);
        argv[argvctr++]=tempstr1;
    }

    if (adbq->relative_threshold){
        argv[argvctr++]="--relative-threshold";
        snprintf(tempstr2,sizeof(tempstr2),"%f",adbq->relative_threshold);
        argv[argvctr++]=tempstr2;
    }

    if (adbq->exhaustive){
        argv[argvctr++]="--exhaustive";
    }

    if (adbq->expandfactor){
        argv[argvctr++]="--expandfactor";
        snprintf(tempstr3,sizeof(tempstr3),"%f",adbq->expandfactor);
        argv[argvctr++]=tempstr3;
    }

    if (adbq->rotate){
        argv[argvctr++]="--rotate";
    }

    if (adbq->keylist){
        argv[argvctr++]="-K";
        argv[argvctr++]=adbq->keylist;
    }
    argv[argvctr]='\0';

    /* debugging */

    audioDB::audioDB(argvctr,argv, &adbQueryResponse, &apierror,mydb);

    //copy data over here from adbQueryResponse to adbqr
    adbqr->sizeRlist=adbQueryResponse.result.__sizeRlist;
    adbqr->sizeDist=adbQueryResponse.result.__sizeDist;
    adbqr->sizeQpos=adbQueryResponse.result.__sizeQpos;
    adbqr->sizeSpos=adbQueryResponse.result.__sizeSpos;
    adbqr->Rlist=adbQueryResponse.result.Rlist;
    adbqr->Dist=adbQueryResponse.result.Dist;
    adbqr->Qpos=adbQueryResponse.result.Qpos;
    adbqr->Spos=adbQueryResponse.result.Spos;

    return apierror;
  }

  int audiodb_l2norm(adb_ptr mydb){

      const char *argv[5];
      int apierror=0;

      argv[0]="audioDB";
      argv[1]="--L2NORM";
      argv[2]="-d";
      argv[3]=mydb->path;
      argv[4]='\0';

      audioDB::audioDB(4,argv,&apierror,mydb);
      return apierror;
  }
}