Compile and link with -pthread.
The pthread_self() function returns the ID of the calling thread. This
is the same value that is returned in *thread in the pthread_create(3)
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 pthread_t can't portably be compared using the C equality operator
(==); use pthread_equal(3) instead.
Thread identifiers should be considered opaque: any attempt to use a
thread ID other than in pthreads calls is nonportable and can lead to
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 pthread_self() is not the same thing as the
kernel thread ID returned by a call to gettid(2).
pthread_create(3), pthread_equal(3), pthreads(7)
This page is part of release 3.35 of the Linux man-pages project. A
description of the project, and information about reporting bugs, can
be found at http://man7.org/linux/man-pages/.
Linux 2008-10-24 PTHREAD_SELF(3)
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