Database *database_create (const DatabaseType *type, const char *file, unsigned flags) {
Database *D = database_alloc(type);
D->filename = strdup(file);
D->flags = flags;
IdToNode nodes;
ndict_init(&nodes);
if (!load_data(D, &nodes)) goto error;
fix_pointers(D, &nodes);
ndict_destroy(&nodes);
fill_indexes(D);
if (pthread_create(&D->service_thread, 0, (void*(*)(void*))service_thread, (void*)D))
goto error;
database_set_sync_period(D, DB_SYNC_PERIOD);
return D;
error:
dbDebug(E, "Database creation failed");
return 0;
}
void run_test(Estimator *estimator)
{
setvbuf(stdout, NULL, _IONBF, 0);
long file_size = PAGE_SIZE * estimator->num_of_pages;
long long *offsets = malloc(estimator->num_of_pages * sizeof(long long));
fill_indexes(offsets, estimator->num_of_pages);
printf("NUM_OF_PAGES: %ld\n", estimator->num_of_pages);
printf("FILE_SIZE: %ld\n", file_size);
printf("PAGE_SIZE: %i\n", PAGE_SIZE);
shuffle(offsets, estimator->num_of_pages);
preallocate_test_file(estimator->file_name, file_size);
int fd, retval;
fd = open(estimator->file_name, O_RDONLY);
handle("open file", fd < 0);
struct timeval tv1, tv2;
gettimeofday(&tv1, NULL);
estimator->strategy(fd, estimator->num_of_pages, offsets);
gettimeofday(&tv2, NULL);
double seq_time = (double) (tv2.tv_usec - tv1.tv_usec) / 1000000 +
(double) (tv2.tv_sec - tv1.tv_sec);
estimator->elapsed_time = seq_time;
free(offsets);
}
