diff options
Diffstat (limited to 'storage/ndb/include/util/random.h')
-rw-r--r-- | storage/ndb/include/util/random.h | 84 |
1 files changed, 84 insertions, 0 deletions
diff --git a/storage/ndb/include/util/random.h b/storage/ndb/include/util/random.h new file mode 100644 index 00000000000..1b83e5fec93 --- /dev/null +++ b/storage/ndb/include/util/random.h @@ -0,0 +1,84 @@ +/* Copyright (C) 2003 MySQL AB + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ + +#ifndef RANDOM_H +#define RANDOM_H + +/*************************************************************** +* I N C L U D E D F I L E S * +***************************************************************/ + +/*************************************************************** +* M A C R O S * +***************************************************************/ + +/***************************************************************/ +/* C O N S T A N T S */ +/***************************************************************/ + + +/*************************************************************** +* D A T A S T R U C T U R E S * +***************************************************************/ + +typedef struct { + unsigned int length; + unsigned int *values; + unsigned int currentIndex; +}RandomSequence; + +typedef struct { + unsigned int length; + unsigned int value; +}SequenceValues; + +/*************************************************************** +* P U B L I C F U N C T I O N S * +***************************************************************/ + +#ifdef __cplusplus +extern "C" { +#endif + + +extern double getTps(unsigned int count, double timeValue); + +/*----------------------------*/ +/* Random Sequences Functions */ +/*----------------------------*/ +extern int initSequence(RandomSequence *seq, SequenceValues *inputValues); +extern unsigned int getNextRandom(RandomSequence *seq); +extern void printSequence(RandomSequence *seq, unsigned int numPerRow); + +/*---------------------------------------------------*/ +/* Code from the glibc, to make sure the same random */ +/* number generator is used by all */ +/*---------------------------------------------------*/ +extern void myRandom48Init(long int seedval); +extern long int myRandom48(unsigned int maxValue); + +#ifdef __cplusplus +} +#endif + +/*************************************************************** +* E X T E R N A L D A T A * +***************************************************************/ + + + +#endif /* RANDOM_H */ + |