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getppid() will return father's pid but getpid() will return own pid.
Look for example:
Code:
#include <stdio.h>
#include <stdlib.h>
int main(void) {
printf( "I am parent. This is my pid: %d", getpid() );
if(fork()==0) {
printf( "I am child. This is the child pid: %d", getpid() );
printf( "This is the parent's pid: %d", getppid() );
}
}
Maybe you put getpid() in parent's section code. Of course it will give parent pid not child pid. I guess the case will be similar with pthread_create function.
pthread_self() returns thread id, not process id
AFAIK in kernel 2.6 they changed something, and it's not possible (or harder then just use getpid()) to get the correct pid in thread.
Check out this thread
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