Script Execution Diagrams

The following pages contain diagrams and charts that illustrate how different types of scripts execute and interact with one another, the data environment for some types of scripts, and how memory is used as scripts execute.

The diagrams and charts are:

• Primary Script Execution
• Continuation Script Execution
• Overlay Script Execution
• Public Script Execution
• Script Type Execution and Memory Usage

Primary Script Execution

Continuation Script Execution

Overlay Script Execution

Public Script Execution

Script Type Execution and Memory Usage

Memory Use ⇒

⇒ ⇒

T primary script

I RUN PUBLIC “P1” PUBLIC P1

Note

M

⇒ RUN PUBLIC "P2" ⇒ PUBLIC P2

E

⇐ TERMINATE

⇓

Note

RUN PUBLIC "P3"

⇒ PUBLIC P3

Note

⇐ TERMINATE

Note

⇓	⇐	TERMINATE
RUN OVERLAY “01”	⇒	OVERLAY 01
⇓	⇐	TERMINATE

CALL "3GLPUB1"

⇒ TSI Basic 3GLPUB1

⇓ ⇐ EXIT
RUN “C1”

⇓

Note

⇓ CONTINUATION SCRIPT
RUN PUBLIC “P4” ⇒ PUBLIC P4

Note

		RUN PUBLIC "P5"	⇒	PUBLIC P5
⇓			⇐ TERMINATE
	⇐	TERMINATE

Note

⇓ RUN OVERLAY “02” ⇒ OVERLAY 02

Note

RUN OVERLAY "03"

⇒ OVERLAY 03

Note

⇐ TERMINATE

Note

⇓ ⇐ TERMINATE
TERMINATE

⇓

Menu

Note: Primary and continuation scripts displace each other in memory. Overlay, public, and 3 GL public scripts accumulate in memory until terminated. In all cases, an EXIT or TERMINATE returns control to the command that follows the RUN or CALL.

From the Script-IV Developer Guide, version 8.9.1. Open this page in the PDF