MkErrorC - the class known as err or error is used to create and manage an error message … More...

Collaboration diagram for MkErrorC_C_API:

Topics
	MkErrExtC
	MkErrExtS - extend the MkErrorC with a library specific feature …

	MkErrorPanicC
	signal-slot for panic on error …

	MkErrorIgnoreC
	signal-slot for ignore on error …

	MkErrorPrintC
	signal-slot for print on error …

	MkErrorExitC
	signal-slot for panic on error …

	MkErrorDefaultC
	signal-slot for raise an error …

	MkErrorC_Class_C_API
	MkErrorC - define the class …

	MkErrorC_TOR_C_API
	MkErrorC - various functions to 'create' and 'delete' a MkErrorS …

	MkErrorC_System_C_API
	MkErrorC - various functions to raise a 'System' messagen on MkErrorS …

	MkErrorC_Signal_C_API
	MkErrorC - various functions to set and check a 'signal' on a MkErrorS …

	MkErrorC_Get_C_API
	MkErrorC - various functions to 'get' data out of a MkErrorS …

	MkErrorC_Raise_C_API
	MkErrorC - various functions to 'raise' a MkErrorS …

	MkErrorC_Misc_C_API
	MkErrorC - various functions to 'work' on a MkErrorS …

Data Structures
struct	MkErrorS
	The data-type to store and handle the error-condition … More...

Macros
#define	MkDbgErr_2(err, col)

#define	MkDbgErr(err)

Detailed Description

MkErrorC - the class known as err or error is used to create and manage an error message …

An error is a singleton object per thread created at startup and is located at MkRuntimeRLS using the datatype MkErrorC.

‍As error-indicator the enum MkErrorE is used.

The MkErrorC is used to collect all data needed to handle an error and provide global ressources required to process and report the error.

The MkErrorC is also used to integrate the error-handling from pymkkernel into the error-handling-code of the target Python.

Example from Filter6.py → use MqContextErrorCatch to convert a Python error into a pymkkernel error

if __name__ == "__main__":
  srv = MqFactoryC.Add(Filter6).New();
  try:
    srv.LinkCreate(sys.argv)
    srv.ProcessEvent(MqWaitOnEventE.FOREVER)
  except Exception as ex:
    srv.ErrorCatch(ex);
  finally:
    srv.Exit()

MkExceptionC

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.

ExceptionCheck

Checks if Exception is of type MkExceptionC and returns True or False …

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

      VAL = self.ReadBUF()
      cl = Client()
      cl.LinkCreate(self.ConfigGetStartAs())
      PID = cl.Send("W", "GPID@I")
      self.SysKill(PID, 9)
      RET = 0
      for i in [1, 2, 3]:
        try:
          RET = cl.Send("W", "ECOI:U@I", VAL)
        except MkExceptionC as ex:
          err = cl.ErrorCatch(ex)
          if (err.IsSOCKET()):
            err.Reset()
            cl.LinkConnect()
            continue
          else:
            err.Raise()
          err.Delete()
        break
      self.SendSTART()
      self.SendI32(RET)

Returns: the result of the check, True or False

Parameters

[in] exception the exception object from Python, if None the global exception object is used

Macro Definition Documentation

◆ MkDbgErr

#define MkDbgErr ( err )

Value:

MkDbgErr_2(err,MK_COLOR_WHITE)

MkDbgErr_2

#define MkDbgErr_2(err, col)

Definition LibMkKernel_mk.h:9693

Definition at line 9696 of file LibMkKernel_mk.h.

◆ MkDbgErr_2

#define MkDbgErr_2	(		err,
			col )

Value:

mk_dbg_color_ln(col,"MkDbgErr[%p]: check<%d>, mkrt<%s>, isLocal<%d>, format_of_error<%p>", \

err, MkErrCheck(err), MkDbgRtChkX(err), MkOBJ(err)->obj_protect.isLocal, err->format_of_error)

MkErrCheck

static bool MkErrCheck(MK_MNGN mng)

check MkErrorS -> MkObjectS::signature …

Definition LibMkKernel_mk.h:9801

MkOBJ

#define MkOBJ(x)

cast a known-object into an MkObjectS pointer

Definition LibMkKernel_mk.h:3551

MkDbgRtChkX

#define MkDbgRtChkX(x)

Definition LibMkKernel_mk.h:12028

Definition at line 9693 of file LibMkKernel_mk.h.

#define MkDbgErr_2(err,col) \
  mk_dbg_color_ln(col,"MkDbgErr[%p]: check<%d>, mkrt<%s>, isLocal<%d>, format_of_error<%p>", \
    err, MkErrCheck(err), MkDbgRtChkX(err), MkOBJ(err)->obj_protect.isLocal, err->format_of_error)

Topics