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Objective Systems, Inc.

Error Formatting and Print Functions

Error formatting and print functions allow information about encode/decode errors to be added to a context block structure and then printed when the error is propagated to the top level. More...

Defines

#define LOG_RTERR(pctxt, stat)   rtxErrSetData(pctxt,stat,__FILE__,__LINE__)
 This macro is used to log a run-time error in the context.
#define LOG_RTERRNEW(pctxt, stat)   rtxErrSetNewData(pctxt,stat,__FILE__,__LINE__)
#define OSRTASSERT(condition)   if (!(condition)) { rtxErrAssertionFailed(#condition,__LINE__,__FILE__); }
 This macro is used to check an assertion.
#define LOG_RTERR1(pctxt, stat, a)   (LOG_RTERR (pctxt, stat),a,stat)
#define LOG_RTERRNEW1(pctxt, stat, a)   (LOG_RTERRNEW (pctxt, stat),a,stat)
#define LOG_RTERR2(pctxt, stat, a, b)   (LOG_RTERR (pctxt, stat),a,b,stat)
#define LOG_RTERRNEW2(pctxt, stat, a, b)   (LOG_RTERRNEW (pctxt, stat),a,b,stat)

Typedefs

typedef int(* OSErrCbFunc )(const char *ptext, void *cbArg_p)

Functions

OSBOOL rtxErrAddDoubleParm (OSCTXT *pctxt, double errParm)
 This function adds a double parameter to an error information structure.
OSBOOL rtxErrAddIntParm (OSCTXT *pctxt, int errParm)
 This function adds an integer parameter to an error information structure.
OSBOOL rtxErrAddInt64Parm (OSCTXT *pctxt, OSINT64 errParm)
 This function adds a 64-bit integer parameter to an error information structure.
OSBOOL rtxErrAddStrParm (OSCTXT *pctxt, const char *pErrParm)
 This function adds a character string parameter to an error information structure.
OSBOOL rtxErrAddStrnParm (OSCTXT *pctxt, const char *pErrParm, size_t nchars)
 This function adds a given number of characters from a character string parameter to an error information structure.
OSBOOL rtxErrAddUniStrParm (OSCTXT *pctxt, const OSUNICHAR *pErrParm)
 This function adds a Unicode string parameter to an error information structure.
OSBOOL rtxErrAddUIntParm (OSCTXT *pctxt, unsigned int errParm)
 This function adds an unsigned integer parameter to an error information structure.
OSBOOL rtxErrAddUInt64Parm (OSCTXT *pctxt, OSUINT64 errParm)
 This function adds an unsigned 64-bit integer parameter to an error information structure.
void rtxErrAssertionFailed (const char *conditionText, int lineNo, const char *fileName)
 This function is used to record an assertion failure.
void rtxErrFreeParms (OSCTXT *pctxt)
 This function is used to free dynamic memory that was used in the recording of error parameters.
char * rtxErrGetText (OSCTXT *pctxt, char *pBuf, size_t *pBufSize)
 This function returns error text in a memory buffer.
OSErrInfortxErrNewNode (OSCTXT *pctxt)
 This function creates a new empty error record for the passed context.
int rtxErrReset (OSCTXT *pctxt)
 This function is used to reset the error state recorded in the context to successful.
void rtxErrLogUsingCB (OSCTXT *pctxt, OSErrCbFunc cb, void *cbArg_p)
 This function allows error information to be logged using a user-defined callback routine.
void rtxErrPrint (OSCTXT *pctxt)
 This function is used to print the error information stored in the context to the standard output device.
void rtxErrPrintElement (OSErrInfo *pErrInfo)
 This function is used to print the error information stored in the error information element to the standard output device.
int rtxErrSetData (OSCTXT *pctxt, int status, const char *module, int lineno)
 This function is used to record an error in the context structure.
int rtxErrSetNewData (OSCTXT *pctxt, int status, const char *module, int lineno)
 This function is used to record an error in the context structure.
int rtxErrGetFirstError (const OSCTXT *pctxt)
 This function returns the error code, stored in the first error record.
int rtxErrGetLastError (const OSCTXT *pctxt)
 This function returns the error code, stored in the last error record.
OSUINT32 rtxErrGetErrorsCnt (const OSCTXT *pctxt)
 This function returns the total number of error records.
int rtxErrResetLastErrors (OSCTXT *pctxt, int errorsToReset)
 This function resets last 'errorsToReset` errors in the context.

Detailed Description

Error formatting and print functions allow information about encode/decode errors to be added to a context block structure and then printed when the error is propagated to the top level.


Define Documentation

#define LOG_RTERR pctxt,
stat   )     rtxErrSetData(pctxt,stat,__FILE__,__LINE__)
 

This macro is used to log a run-time error in the context.

It calls the rtxErrSetData function to set the status and error parameters. The C built-in __FILE__ and __LINE__ macros are used to record the position in the source file of the error.

Parameters:
pctxt A pointer to a context structure.
stat Error status value from rtxErrCodes.h

Definition at line 435 of file rtxCommon.h.

#define OSRTASSERT condition   )     if (!(condition)) { rtxErrAssertionFailed(#condition,__LINE__,__FILE__); }
 

This macro is used to check an assertion.

This is a condition that is expected to be true. The rtxErrAssertionFailed function is called if the condition is not true. The C built-in __FILE__ and __LINE__ macros are used to record the position in the source file of the failure.

Parameters:
condition Condition expected to be true (for example, "(ptr != NULL)" )

Definition at line 450 of file rtxCommon.h.


Function Documentation

OSBOOL rtxErrAddDoubleParm OSCTXT pctxt,
double  errParm
 

This function adds a double parameter to an error information structure.

Parameters:
pctxt A pointer to a context structure.
errParm The double error parameter.
Returns:
The status of the operation (TRUE if the parameter was sucessfully added).

OSBOOL rtxErrAddInt64Parm OSCTXT pctxt,
OSINT64  errParm
 

This function adds a 64-bit integer parameter to an error information structure.

Parameter substitution is done in much the same way as it is done in C printf statments. The base error message specification that goes along with a particular status code may have variable fields built in using '' modifiers. These would be replaced with actual parameter data.

Parameters:
pctxt A pointer to a context structure.
errParm The 64-bit integer error parameter.
Returns:
The status of the operation (TRUE if the parameter was sucessfully added).

OSBOOL rtxErrAddIntParm OSCTXT pctxt,
int  errParm
 

This function adds an integer parameter to an error information structure.

Parameter substitution is done in much the same way as it is done in C printf statments. The base error message specification that goes along with a particular status code may have variable fields built in using '' modifiers. These would be replaced with actual parameter data.

Parameters:
pctxt A pointer to a context structure.
errParm The integer error parameter.
Returns:
The status of the operation (TRUE if the parameter was sucessfully added).

OSBOOL rtxErrAddStrnParm OSCTXT pctxt,
const char *  pErrParm,
size_t  nchars
 

This function adds a given number of characters from a character string parameter to an error information structure.

Parameters:
pctxt A pointer to a context structure.
pErrParm The character string error parameter.
nchars Number of characters to add from pErrParm.
Returns:
The status of the operation (TRUE if the parameter was sucessfully added).

OSBOOL rtxErrAddStrParm OSCTXT pctxt,
const char *  pErrParm
 

This function adds a character string parameter to an error information structure.

Parameters:
pctxt A pointer to a context structure.
pErrParm The character string error parameter.
Returns:
The status of the operation (TRUE if the parameter was sucessfully added).

OSBOOL rtxErrAddUInt64Parm OSCTXT pctxt,
OSUINT64  errParm
 

This function adds an unsigned 64-bit integer parameter to an error information structure.

Parameters:
pctxt A pointer to a context structure.
errParm The unsigned 64-bit integer error parameter.
Returns:
The status of the operation (TRUE if the parameter was sucessfully added).

OSBOOL rtxErrAddUIntParm OSCTXT pctxt,
unsigned int  errParm
 

This function adds an unsigned integer parameter to an error information structure.

Parameters:
pctxt A pointer to a context structure.
errParm The unsigned integer error parameter.
Returns:
The status of the operation (TRUE if the parameter was sucessfully added).

OSBOOL rtxErrAddUniStrParm OSCTXT pctxt,
const OSUNICHAR pErrParm
 

This function adds a Unicode string parameter to an error information structure.

Parameters:
pctxt A pointer to a context structure.
pErrParm The Unicode string error parameter.
Returns:
The status of the operation (TRUE if the parameter was sucessfully added).

void rtxErrAssertionFailed const char *  conditionText,
int  lineNo,
const char *  fileName
 

This function is used to record an assertion failure.

It is used in conjunction with the OTRTASSERT macro. It outputs information on the condition to stderr and then calls exit to terminate the program.

Parameters:
conditionText The condition that failed (for example, ptr != NULL)
lineNo Line number in the program of the failure.
fileName Name of the C source file in which the assertion failure occurred.

void rtxErrFreeParms OSCTXT pctxt  ) 
 

This function is used to free dynamic memory that was used in the recording of error parameters.

After an error is logged, this function should be called to prevent memory leaks.

Parameters:
pctxt A pointer to a context structure.

OSUINT32 rtxErrGetErrorsCnt const OSCTXT pctxt  ) 
 

This function returns the total number of error records.

Parameters:
pctxt A pointer to a context structure.
Returns:
The total number of error records in the context.

int rtxErrGetFirstError const OSCTXT pctxt  ) 
 

This function returns the error code, stored in the first error record.

Parameters:
pctxt A pointer to a context structure.
Returns:
The first status code; zero if no error records exist.

int rtxErrGetLastError const OSCTXT pctxt  ) 
 

This function returns the error code, stored in the last error record.

Parameters:
pctxt A pointer to a context structure.
Returns:
The last status code; zero if no error records exist.

char* rtxErrGetText OSCTXT pctxt,
char *  pBuf,
size_t *  pBufSize
 

This function returns error text in a memory buffer.

If buffer pointer and buffer size are specified in parameters (not NULL) then error text will be copied in the passed buffer. Otherwise, this function allocates memory using the 'rtxMemAlloc' function. This memory is automatically freed at the time the 'rtxMemFree' or 'rtxFreeContext' functions are called. The calling function may free the memory by using 'rtxMemFreePtr' function.

Parameters:
pctxt A pointer to a context structure.
pBuf A pointer to a destination buffer to obtain the error text. If NULL, dynamic buffer will be allocated.
pBufSize A pointer to buffer size. If pBuf is NULL and this parameter is not, it will receive the size of allocated dynamic buffer.
Returns:
A pointer to a buffer with error text. If pBuf is not NULL, the return pointer will be equal to it. Otherwise, returns newly allocated buffer with error text. NULL, if error occured.

void rtxErrLogUsingCB OSCTXT pctxt,
OSErrCbFunc  cb,
void *  cbArg_p
 

This function allows error information to be logged using a user-defined callback routine.

The callback information is invoked with error information in the context allowing the user to do application-specific handling (for example, it can be written to an error log or a Window display). The prototype of the callback function to be passed is as follows:

int cb (const char* ptext, void* cbArg_p);

where ptext is a pointer to the formatted error text string and cbArg_p is a pointer to a user-defined callback argument.

Parameters:
pctxt A pointer to a context structure.
cb Callback function pointer.
cbArg_p Pointer to a user-defined argument that is passed to the callback function.

OSErrInfo* rtxErrNewNode OSCTXT pctxt  ) 
 

This function creates a new empty error record for the passed context.

rtxErrSetData function call with bAllocNew = FALSE should be used to set the data for this node.

Parameters:
pctxt A pointer to a context structure.
Returns:
A pointer to a newly allocated error record; NULL, if error occured.

void rtxErrPrint OSCTXT pctxt  ) 
 

This function is used to print the error information stored in the context to the standard output device.

Parameter substitution is done so that recorded parameters are added to the output message text.

Parameters:
pctxt A pointer to a context structure.

void rtxErrPrintElement OSErrInfo pErrInfo  ) 
 

This function is used to print the error information stored in the error information element to the standard output device.

Parameter substitution is done so that recorded parameters are added to the output message text.

Parameters:
pErrInfo A pointer to an error information element.

int rtxErrReset OSCTXT pctxt  ) 
 

This function is used to reset the error state recorded in the context to successful.

It is used in the generated code in places where automatic error correction can be done.

Parameters:
pctxt A pointer to a context structure.

int rtxErrResetLastErrors OSCTXT pctxt,
int  errorsToReset
 

This function resets last 'errorsToReset` errors in the context.

Parameters:
pctxt A pointer to a context structure.
errorsToReset A number of errors to reset, starting from the last record.
Returns:
Completion status of operation:
  • 0(RT_OK) = success,
  • negative return value is error

int rtxErrSetData OSCTXT pctxt,
int  status,
const char *  module,
int  lineno
 

This function is used to record an error in the context structure.

It is typically called via the LOG_RTERR macro in the generated code to trap error conditions.

Parameters:
pctxt A pointer to a context structure.
status The error status code from rtxErrCodes.h
module The C source file in which the error occurred.
lineno The line number within the source file of the error.
Returns:
The status code that was passed in.

int rtxErrSetNewData OSCTXT pctxt,
int  status,
const char *  module,
int  lineno
 

This function is used to record an error in the context structure.

It is typically called via the LOG_RTERRNEW macro in the generated code to trap error conditions. It always allocates new error record.

Parameters:
pctxt A pointer to a context structure.
status The error status code from rtxErrCodes.h
module The C source file in which the error occurred.
lineno The line number within the source file of the error.
Returns:
The status code that was passed in.


This file was last modified on 8 Jan 2007.
XBinder, Version 1.1.9