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Process System Calls

Getpid system call

Arguments

None

Return Value

PID Success

Description

Returns the process identifier of the invoking process. The system call does not fail.

Algorithm:


Find the PID of the current process from the Process Table.

Return the PID of current process.

Getppid system call

Arguments

None

Return Value

PPID Success

Description

Returns to the calling process the value of the process identifier of its parent. The system call does not fail.

Algorithm



Find the PPID of the current process from the Process Table.

Return the PPID.

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