dberror.h

#ifndef DBERROR_H
#define DBERROR_H

#include "stdio.h"

/* module wide constants */
#define PAGE_SIZE 4096

/* return code definitions */
typedef int RC;
#define RC_OK 0
#define RC_FILE_NOT_FOUND 1
#define RC_FILE_HANDLE_NOT_INIT 2
#define RC_WRITE_FAILED 3
#define RC_READ_NON_EXISTING_PAGE 4
#define RC_STORAGE_MANAGER_NOT_INITIALIZED 5
#define RC_FILE_CREATION_FAILED 6

#define RC_WRITE_TO_OUTPUTSTREAM_FAILED 11
#define RC_FILE_NOT_CLOSED 12
#define RC_FILE_READ_FAILED 13
#define RC_FILE_OFFSET_FAILED 14

#define RC_RM_COMPARE_VALUE_OF_DIFFERENT_DATATYPE 200
#define RC_RM_EXPR_RESULT_IS_NOT_BOOLEAN 201
#define RC_RM_BOOLEAN_EXPR_ARG_IS_NOT_BOOLEAN 202
#define RC_RM_NO_MORE_TUPLES 203
#define RC_RM_NO_PRINT_FOR_DATATYPE 204
#define RC_RM_UNKOWN_DATATYPE 205

#define RC_NO_MORE_SPACE_IN_BUFFER 401
#define RC_UNKNOWN_STRATEGY 402
#define RC_INVALID_BM 403
#define RC_NON_EXISTING_PAGE_IN_FRAME 404

#define RC_MEMORY_ERROR 500
#define RC_NULL_ERROR 501
#define RC_WRITE_ERROR 502

#define RC_PINNEN_PAGES_IN_BUFFER 701
#define RC_PIN_PAGE_PARAMETER_ERROR 702
#define RC_READ_COUNT_ERROR 703
#define RC_WRITE_COUNT_ERROR 704

/* holder for error messages */
extern char *RC_message;

/* print a message to standard out describing the error */
extern void printError (RC error);
extern char *errorMessage (RC error);

#define THROW(rc,message) \
  do {			  \
    RC_message=message;	  \
    return rc;		  \
  } while (0)		  \

// check the return code and exit if it is an error
#define CHECK(code)							\
  do {									\
    int rc_internal = (code);						\
    if (rc_internal != RC_OK)						\
      {									\
	char *message = errorMessage(rc_internal);			\
	printf("[%s-L%i-%s] ERROR: Operation returned error: %s\n",__FILE__, __LINE__, __TIME__, message); \
	free(message);							\
	exit(1);							\
      }									\
  } while(0);


#endif