getpid, getppid - get process ids #include <u.h>

#include <libc.h>

int getpid(void)

int getppid(void)

Getpid reads /dev/pid (see cons (3)) and converts it to get the process id of the current process, a number guaranteed to be unique among all running processes on the machine executing getpid .

Getppid reads /dev/ppid (see cons (3)) and converts it to get the id of the parent of the current process.

/sys/src/libc/9sys intro (2), exec (2), cons (3), proc (3) Returns 0 and sets errstr if unsuccessful.