getppid (BPX1GPP, BPX4GPP) — Get the parent process ID
Function
The getppid callable service gets the parent process ID (PPID) of the calling process.
Requirements
Operation | Environment |
---|---|
Authorization: | Supervisor state or problem state, any PSW key |
Dispatchable unit mode: | Task |
Cross memory mode: | PASN = HASN |
AMODE (BPX1GPP): | 31-bit |
AMODE (BPX4GPP): | 64-bit |
ASC mode: | Primary mode |
Interrupt status: | Enabled for interrupts |
Locks: | Unlocked |
Control parameters: | All parameters must be addressable by the caller and in the primary address space. |
Format
The syntax format is as follows:
CALL BPX1GPP,(Return_value)
AMODE 64 callers use BPX4GPP.
Parameters
- Return_value
- Returned parameter
- Type:
- Integer
- Length:
- Fullword
The name of a fullword in which the getppid service returns the parent process ID of the calling process.
Usage notes
If the getppid service fails, the process ends abnormally.
Related services
Characteristics and restrictions
There are no restrictions on the use of the getppid service.