Ejemplo n.º 1
0
int main( int argc, char **argv ){

	//	Init the instructions
	init_instr_memory();

	// CLOCK CYCLE LOOP
	int instr_buffer;
	while( 1 ){
	
		//	NOTE: Order matters. All functions should fetch value
		//	from pipelined reg before the previous stage override the 
		//	reg values
		write_back();
		memory_write();
		execute_2();
		execute_1();
		instruction_decode();
		instruction_fetch();
		
		clk++;		
	}
	
	free( instruction_memory );
	free( data_memory );

exit( 0 );
}
Ejemplo n.º 2
0
void database::execute(std::string query, std::vector <std::vector <std::string>>& result_set, unsigned int& num_rows, unsigned int& num_cols)
{
	MYSQL_RES *mysql_result = nullptr;

	// Assume the query returns nothing.

	num_rows = 0;
	num_cols = 0;
	result_set.clear();

	// Do the work.

	execute_1 (query, result_set, nullptr, num_rows, num_cols, mysql_result);

	// This version of of this member function does not require any more information.
	// Clean up.

	if (mysql_result != nullptr) mysql_free_result(mysql_result);
}
Ejemplo n.º 3
0
void database::execute(std::string query, db_row_set& row_set)
{
	MYSQL_RES   *mysql_result;
	MYSQL_FIELD *mysql_fields;

	// Prepare the base class for the database query.

	row_set.clear();
	
	// Prepare a child class for the query.

	row_set.setup_child_phase_1();

	// Execute the query.

	execute_1(query, row_set.result_set, &row_set.null_fields, row_set.my_num_rows, row_set.my_num_cols, mysql_result);

	// Resize the column descriptor list.

	row_set.col_desc_list.resize(row_set.my_num_cols);

	// Copy the required information from the MySQL result-set into the column descriptions.

	mysql_fields = mysql_fetch_fields(mysql_result);
	for (unsigned int i = 0; i < row_set.my_num_cols; i++)
	{
		// Column name

		if (mysql_fields[i].name != NULL)
			row_set.col_desc_list[i].my_name = mysql_fields[i].name;

		// Column name in the database (aliases are ignored)

		if (mysql_fields[i].org_name != NULL)
			row_set.col_desc_list[i].my_name_in_db = mysql_fields[i].org_name;

		// Database table to which the column belongs

		if (mysql_fields[i].table != NULL)
			row_set.col_desc_list[i].my_table = mysql_fields[i].table;

		// Data length

		row_set.col_desc_list[i].my_length = mysql_fields[i].length;

		// Number of decimals for numeric data fields

		row_set.col_desc_list[i].my_decimals = mysql_fields[i].decimals;

		// Determine if nulls are allowed

		row_set.col_desc_list[i].my_null_ok = (0 == (mysql_fields[i].flags & NOT_NULL_FLAG));

		// Determine if this column is part of a primary key

		row_set.col_desc_list[i].my_pri_key = (0 != (mysql_fields[i].flags & PRI_KEY_FLAG));

		// Determine if this column auto-increments

		row_set.col_desc_list[i].my_auto_inc = (0 != (mysql_fields[i].flags & AUTO_INCREMENT_FLAG));
		
		// Data type

		switch (mysql_fields[i].type)
		{
		case MYSQL_TYPE_TINY:
			if (mysql_fields[i].flags & UNSIGNED_FLAG)
				row_set.col_desc_list[i].my_type = DB_UNSIGNED_TINYINT;
			else
				row_set.col_desc_list[i].my_type = DB_TINYINT;
			break;
		case MYSQL_TYPE_SHORT:
			if (mysql_fields[i].flags & UNSIGNED_FLAG)
				row_set.col_desc_list[i].my_type = DB_UNSIGNED_SMALLINT;
			else
				row_set.col_desc_list[i].my_type = DB_SMALLINT;
			break;
		case MYSQL_TYPE_INT24:
			if (mysql_fields[i].flags & UNSIGNED_FLAG)
				row_set.col_desc_list[i].my_type = DB_UNSIGNED_MEDIUMINT;
			else
				row_set.col_desc_list[i].my_type = DB_MEDIUMINT;
			break;
		case MYSQL_TYPE_LONG:
			if (mysql_fields[i].flags & UNSIGNED_FLAG)
				row_set.col_desc_list[i].my_type = DB_UNSIGNED_INT;
			else
				row_set.col_desc_list[i].my_type = DB_INT;
			break;
		case MYSQL_TYPE_LONGLONG:
			if (mysql_fields[i].flags & UNSIGNED_FLAG)
				row_set.col_desc_list[i].my_type = DB_UNSIGNED_BIGINT;
			else
				row_set.col_desc_list[i].my_type = DB_BIGINT;
			break;
		case MYSQL_TYPE_DECIMAL:
		case MYSQL_TYPE_NEWDECIMAL:
			row_set.col_desc_list[i].my_type = DB_DECIMAL;
			break;
		case MYSQL_TYPE_FLOAT:
			row_set.col_desc_list[i].my_type = DB_FLOAT;
			break;
		case MYSQL_TYPE_DOUBLE:
			row_set.col_desc_list[i].my_type = DB_DOUBLE;
			break;
		case MYSQL_TYPE_BIT:
			row_set.col_desc_list[i].my_type = DB_BIT;
			break;
		case MYSQL_TYPE_TIMESTAMP:
			row_set.col_desc_list[i].my_type = DB_TIMESTAMP;
			break;
		case MYSQL_TYPE_DATE:
			row_set.col_desc_list[i].my_type = DB_DATE;
			break;
		case MYSQL_TYPE_TIME:
			row_set.col_desc_list[i].my_type = DB_TIME;
			break;
		case MYSQL_TYPE_DATETIME:
			row_set.col_desc_list[i].my_type = DB_DATETIME;
			break;
		case MYSQL_TYPE_YEAR:
			row_set.col_desc_list[i].my_type = DB_YEAR;
			break;
		case MYSQL_TYPE_STRING:
			if (mysql_fields[i].charsetnr == 63)
				row_set.col_desc_list[i].my_type = DB_BINARY;
			else
				row_set.col_desc_list[i].my_type = DB_CHAR;
			break;
		case MYSQL_TYPE_VAR_STRING:
			if (mysql_fields[i].charsetnr == 63)
				row_set.col_desc_list[i].my_type = DB_VARBINARY;
			else
			row_set.col_desc_list[i].my_type = DB_VARCHAR;
			break;
		case MYSQL_TYPE_BLOB:
			if (mysql_fields[i].charsetnr == 63)
				row_set.col_desc_list[i].my_type = DB_BLOB;
			else
				row_set.col_desc_list[i].my_type = DB_TEXT;
			break;
		case MYSQL_TYPE_SET:
			row_set.col_desc_list[i].my_type = DB_SET;
			break;
		case MYSQL_TYPE_ENUM:
			row_set.col_desc_list[i].my_type = DB_ENUM;
			break;
		case MYSQL_TYPE_GEOMETRY:
			row_set.col_desc_list[i].my_type = DB_GEOMETRY;
			break;
		case MYSQL_TYPE_NULL:
			row_set.col_desc_list[i].my_type = DB_NULL;
			break;
		default:
			row_set.col_desc_list[i].my_type = DB_UNKNOWN_TYPE;
		}
	}

	// Clean up the MySQL data structures.

	mysql_free_result(mysql_result);

	// Allow a child class to prepare its data structures using the query results.

	row_set.setup_child_phase_2();
}