huschi.net

PTHREAD_SELF(3)            Linux Programmer's Manual           PTHREAD_SELF(3)

NAME
       pthread_self - obtain ID of the calling thread
SYNOPSIS
       #include <pthread.h>
       pthread_t pthread_self(void);
       Compile and link with -pthread.
DESCRIPTION
       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.
RETURN VALUE
       This function always succeeds, returning the calling thread's ID.
ERRORS
       This function always succeeds.
CONFORMING TO
       POSIX.1-2001.
NOTES
       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
       unspecified results.
       Thread IDs are guaranteed to be unique only 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).
SEE ALSO
       pthread_create(3), pthread_equal(3), pthreads(7)
COLOPHON
       This page is part of release 3.53 of the Linux  man-pages  project.   A
       description  of  the project, and information about reporting bugs, can
       be found at http://www.kernel.org/doc/man-pages/.

Linux                             2008-10-24                   PTHREAD_SELF(3)