gettid — get thread identification
#include <sys/types.h>
pid_t gettid( |
void); |
gettid() returns the
caller's thread ID (TID). In a single-threaded process, the
thread ID is equal to the process ID (PID, as returned by
getpid(2)). In a
multithreaded process, all threads have the same PID, but
each one has a unique TID. For further details, see the
discussion of CLONE_THREAD in
clone(2).
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).
The thread ID returned by this call is not the same thing as a POSIX thread ID (i.e., the opaque value returned by pthread_self(3)).