//-< TESTPERF.CPP >--------------------------------------------------*--------*// FastDB                    Version 1.0         (c) 1999  GARRET    *     ?  *// (Main Memory Database Management System)                          *   /\|  *//                                                                   *  /  \  *//                          Created:     10-Dec-98    K.A. Knizhnik  * / [] \ *//                          Last update: 20-Jan-99    K.A. Knizhnik  * GARRET *//-------------------------------------------------------------------*--------*// Performance test for index and sequential searches//-------------------------------------------------------------------*--------*#include <stdio.h>#include "fastdb.h"USE_FASTDB_NAMESPACEconst int nRecords = 1000000;const int nIterations = 10;const int nReadsPerWrite = 1013;class Record {   public:    char const* key;    char const* value;    int         counter;    TYPE_DESCRIPTOR((KEY(key, HASHED|INDEXED), FIELD(value), FIELD(counter)));};REGISTER(Record);int main(int argc, char* argv[]) {    int i, j, n;    char buf[32];    dbDatabase db;    if (db.open("testfuzzy")) {         nat8 key = 1999;        time_t start = time(NULL);        for (i = 0; i < nRecords; i++) {             Record rec;            key = (3141592621u*key + 2718281829u) % 1000000007u;            sprintf(buf, INT8_FORMAT ".", key);            rec.key = buf;            rec.value = buf;            insert(rec);        }        printf("Elapsed time for inserting %d record: %d seconds\n",                nRecords, int(time(NULL) - start));        start = time(NULL);        db.commit();        printf("Commit time: %d\n", int(time(NULL) - start));        dbQuery q;        dbCursor<Record> cursor;        dbCursor<Record> updateCursor(dbCursorForUpdate);        q = "key=",buf;        for (j = 0; j < nIterations; j++) {             key = 1999;            for (i = 0; i < nRecords; i++) {                 key = (3141592621u*key + 2718281829u) % 1000000007u;                sprintf(buf, INT8_FORMAT ".", key);                if (i*j % nReadsPerWrite == 0) {                     n = updateCursor.select(q);                    updateCursor->counter += 1;                    db.commit();                } else {                     n = cursor.select(q);                }                assert(n == 1);            }        }        printf("Elapsed time for %d reads and %d writes: %d seconds\n",                nIterations*nRecords, nIterations*nRecords/nReadsPerWrite,                int(time(NULL) - start));        start = time(NULL);        cursor.removeAll();        printf("Elapsed time for deleting all %d records: %d seconds\n",                nRecords, int(time(NULL) - start));        db.close();        return EXIT_SUCCESS;    } else {         printf("Failed to open database\n");        return EXIT_FAILURE;    }}