COBOL - Give simple program example for Dynamic link and Dynamic call in COBOL?

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Give simple program example for Dynamic link and Dynamic call in COBOL?

Total Answers and Comments: 2

Last Update: August 24, 2009 Asked by: gilbat82

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Submitted by: Rachell

Static Call In Cobol:

Is calling of a literal.

CALL 'ABC' USING ARGUMENTS

The call statement specifies the sub-routine called as a literal. i.e, within quotes 'ABC'.

In static calls, if ABC is modified and recompiled, then all the executables calling ABC should be relinked.

Dynamic Calls:

01 Sub-Routine pic x(8) value 'ABC'

CALL ABC USING ARGUMENTS

Dynamic calling invovles calling a sub-routine using a variable and the variable contains the sub-routine name.

here the complied code is loaded when needed and is not incorporated into the executable.

Above answer was rated as good by the following members:
Truclu, Jwalaramappan, 695005

July 21, 2009 20:44:40

Rachell

Member Since: July 2009 Contribution: 2

RE: Give simple program example for Dynamic link and Dynamic call in COBOL?

Static Call In Cobol:

Is calling of a literal.

CALL 'ABC' USING ARGUMENTS

The call statement specifies the sub-routine called as a literal. i.e within quotes 'ABC'.

In static calls if ABC is modified and recompiled then all the executables calling ABC should be relinked.

Dynamic Calls:

01 Sub-Routine pic x(8) value 'ABC'

CALL ABC USING ARGUMENTS

Dynamic calling invovles calling a sub-routine using a variable and the variable contains the sub-routine name.

here the complied code is loaded when needed and is not incorporated into the executable.

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August 23, 2009 10:06:17

kmdeepu

Member Since: August 2009 Contribution: 1

RE: Give simple program example for Dynamic link and Dynamic call in COBOL?

Usually in COBOL the subroutines are compiled and linked to the load module at the time of compilation and if we are calling the subroutine only a few times then may not worth keeping in the memory unnecessary. This is known as STATIC CALL. So COBOL facilitates another mechanism called DYNAMIC CALLs to avoid this prob. In dyanamic call the subroutine is not a component of the main program. It is compiled separately and is only moved to main memory at the time of CALLing. Hence it saves memory and overhead.

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