comparison audioDB.h @ 279:dee55886eca0 sampling

make the RNG a part of the audioDB object.

Easier to deal with memory discipline and initialization (though note
the FIXME comment in audioDB::initTables()).

Also initialize the RNG from the current time.  A mature implementation
would use a proper source of entropy...

   int infid;
   char* db;
   char* indata;
   struct stat statbuf;  
   dbTableHeaderPtr dbH;
+
+  gsl_rng *rng;
   
   char *fileTable;
   unsigned* trackTable;
   double* dataBuf;
   double* inBuf;

   void read_data(int track, double **data_buffer_p, size_t *data_buffer_size_p);
   void set_up_query(double **qp, double **vqp, double **qnp, double **vqnp, double **qpp, double **vqpp, double *mqdp, unsigned int *nvp);
   void set_up_db(double **snp, double **vsnp, double **spp, double **vspp, double **mddp, unsigned int *dvp);
   void query_loop(const char* dbName, const char* inFile, Reporter *reporter);
 
+  void initRNG();
   void initDBHeader(const char *dbName);
   void initInputFile(const char *inFile);
   void initTables(const char* dbName, const char* inFile);
   void unitNorm(double* X, unsigned d, unsigned n, double* qNorm);
   void unitNormAndInsertL2(double* X, unsigned dim, unsigned n, unsigned append);

   void insert_data_vectors(off_t offset, void *buffer, size_t size);
   void insert(const char* dbName, const char* inFile);
   void batchinsert(const char* dbName, const char* inFile);
   void query(const char* dbName, const char* inFile, adb__queryResponse *adbQueryResponse=0);
   void status(const char* dbName, adb__statusResponse *adbStatusResponse=0);
-  unsigned random_track(unsigned *propTable, unsigned total, gsl_rng *);
+  unsigned random_track(unsigned *propTable, unsigned total);
   void sample(const char *dbName);
   void ws_status(const char*dbName, char* hostport);
   void ws_query(const char*dbName, const char *trackKey, const char* hostport);
   void l2norm(const char* dbName);
   void power_flag(const char *dbName);

   forWrite(false), \
   infid(0), \
   db(0), \
   indata(0), \
   dbH(0), \
+  rng(0), \
   fileTable(0), \
   trackTable(0), \
   dataBuf(0), \
   l2normTable(0), \
   timesTable(0), \