pid_alive(9) check that a task structure is not stale

SYNOPSIS

int pid_alive(const 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.

RETURN

1 if the process is alive. 0 otherwise.

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