MkExceptionC_C_API

MkExceptionC - The default-exception of the Programming-Language-Micro-Kernel (PLMK) … More...

Collaboration diagram for MkExceptionC_C_API:

Functions
bool	MkExceptionCheck (MK_EXP exception)
	Checks if Exception is of type MkExceptionC and returns true or false …
void	MkExceptionRaise (MK_MNG const expobj, MK_STRN const callfunc, MK_I32 const callline)
	convert an MkErrorC into a Target-Programming-Language (TPL) exception …
MK_ERR	MkExceptionCatch (MK_MNG const expobj, MK_EXP const exception, MK_STRN const callfunc)
	convert an Target-Programming-Language (TPL) exception into an MkErrorC …

Detailed Description

MkExceptionC - The default-exception of the Programming-Language-Micro-Kernel (PLMK) …

The Programming-Language-Micro-Kernel (PLMK) provide with MkErrorC a complete error-handling with focus to support the "C" Programming-Language. The support include catch, raise, signal and attributes. In addition every Target-Programming-Language (TPL) add their own error-handling and the purpose of MkExceptionC is to integrate the MkErrorC into the Target-Programming-Language (TPL).

The default-exception MkExceptionC is used to connect the MkErrorC with the Target-Programming-Language (TPL) error-object.

• The default-error is defined in MkRuntimeS::error_mk.
• On error the default-error is set to the error-data, the MkErrorE status change to MK_ERROR.
• The non-C language create a copy from the default-error and throw the copy as MkExceptionC exception.
• The C language just return the MkErrorE status of the default-error.

The implementation of an exception depends heavily on the Target-Programming-Language (TPL), starting with no exception at all, for example. C, an exception as a class object, or as an exception as a global attribute.

Attention

• All MkExceptionC code is implemented at the Target-Programming-Language (TPL) without support by the Programming-Language-Micro-Kernel (PLMK) compiler.
• By default, MkExceptionC is only used internally, hidden by the class MkErrorC.

Function Documentation

MkExceptionCatch()

MK_ERR MkExceptionCatch	(	MK_MNG const	expobj,
		MK_EXP const	exception,
		MK_STRN const	callfunc )

convert an Target-Programming-Language (TPL) exception into an MkErrorC …

Parameters

[in]	expobj	The LibMsgqueObject used to personalize the exception/error (will be validated first)
[in]	exception	the exception object from Tcl, if "MK_NULL" the global exception object is used
[in]	callfunc	a user-defined postfix to identify the calling-function or the environment (default = name-of-function, "MK_NULL" = resolve-own-name)

Returns

the MkErrorC created with data from exception

MkExceptionCheck()

bool MkExceptionCheck

(

MK_EXP

exception

)

Checks if Exception is of type MkExceptionC and returns true or false …

Example: test case to check KILL and RECOVER feature, check on MkExceptionC

          set VAL   [my ReadBUF]
          set cl    [Client new]
          $cl myLinkCreate [my ConfigGetStartAs]
          $cl Send "W" "GPID@I" PID
          my SysKill $PID 9
          set RET 0
          foreach num {1 2 3} {
            try {
              set RET [$cl Send "W" "ECOI:U@I" $VAL]
            } trap {MkExceptionC} "" {
              set err [$cl ErrorCatch]
              if {[$err IsSOCKET]} {
                $err Reset
                $cl LinkConnect
                continue
              } else {
                $err Raise
              }
              $err Delete
            }
            break
          }
          my SendSTART
          my SendI32 $RET

Returns

the result of the check, true or false

Parameters

[in]

exception

the exception object from Tcl, if "MK_NULL" the global exception object is used

MkExceptionRaise()

void MkExceptionRaise	(	MK_MNG const	expobj,
		MK_STRN const	callfunc,
		MK_I32 const	callline )

convert an MkErrorC into a Target-Programming-Language (TPL) exception …

Parameters

[in]	expobj	The LibMsgqueObject used to personalize the exception/error (will be validated first)
[in]	callfunc	a user-defined postfix to identify the calling-function or the environment (default = name-of-function, "MK_NULL" = resolve-own-name)
[in]	callline	the number of the line the call take place (e.g. LINE)