Section: Linux Programmer's Manual (3)Updated: 2008-10-24Local indexUp
pthread_self - obtain ID of the calling thread
#include <pthread.h>pthread_t pthread_self(void);
Compile and link with -pthread.
function returns the ID of the calling thread.
This is the same value that is returned in
call that created this thread.
This function always succeeds, returning the calling thread's ID.
This function always succeeds.
POSIX.1 allows an implementation wide freedom in choosing
the type used to represent a thread ID;
for example, representation using either an arithmetic type or
a structure is permitted.
Therefore, variables of type
can't portably be compared using the C equality operator (==);
Thread identifiers should be considered opaque:
any attempt to use a thread ID other than in pthreads calls
is nonportable and can lead to unspecified results.
Thread IDs are only guaranteed to be unique within a process.
A thread ID may be reused after a terminated thread has been joined,
or a detached thread has terminated.
The thread ID returned by
is not the same thing as the kernel thread ID returned by a call to