gettid

gettid - get thread identification

#include <sys/types.h>
 pid_t gettid(void);

R gettid () returns the thread ID of the current process. This is equal to the process ID (as returned by getpid(2)), unless the process is part of a thread group (created by specifying the CLONE_THREAD flag to the clone(2) system call). All processes in the same thread group have the same PID, but each one has a unique TID.

On success, returns the thread ID of the current process.

This call is always successful.

R gettid () is Linux specific and should not be used in programs that are intended to be portable.

Glibc does not provide a wrapper for this system call; call it using syscall(2).

clone(2), fork(2), getpid(2)