PID_ALIVE(9) Driver Basics PID_ALIVE(9)NAME
pid_alive - check that a task structure is not stale
SYNOPSIS
int pid_alive(struct task_struct * p);
ARGUMENTS
p
Task structure to be checked.
DESCRIPTION
Test if a process is not yet dead (at most zombie state) If pid_alive
fails, then pointers within the task structure can be stale and must
not be dereferenced.
COPYRIGHTKernel Hackers Manual 2.6. November 2013 PID_ALIVE(9)