Test Initial Thread (TSTINLTH)

Built-in number for TSTINLTH is 509.
TSTINLTH (
) :   signed binary(4)  /* result */

Description:   The result is set to indicate whether execution is within a process's initial thread or a secondary thread. A process's initial thread is the thread that is implicitly initiated by the machine when a process is initiated. Each process has a minimum of one thread associated with it. This is true regardless of whether the initiation phase, problem phase, or termination phase program of the initial thread is executing.

The returned result will have one of two possible values.

Authorization Required

• None

Lock Enforcement

• None

Exceptions

06 Addressing

• 0601 Space Addressing Violation
• 0602 Boundary Alignment

08 Argument/Parameter

• 0801 Parameter Reference Violation

10 Damage Encountered

• 1004 System Object Damage State
• 1044 Partial System Object Damage

1C Machine-Dependent

• 1C03 Machine Storage Limit Exceeded

20 Machine Support

• 2002 Machine Check
• 2003 Function Check

22 Object Access

• 2202 Object Destroyed
• 220B Object Not Available

24 Pointer Specification

• 2401 Pointer Does Not Exist
• 2402 Pointer Type Invalid

2E Resource Control Limit

• 2E01 User Profile Storage Limit Exceeded

36 Space Management

• 3601 Space Extension/Truncation

44 Protection Violation

• 4401 Object Domain or Hardware Storage Protection Violation
• 4402 Literal Values Cannot Be Changed