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.
ATTRIBUTES¶
Multithreading (see pthreads(7))¶
The
pthread_self() function is thread-safe.
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 3.74 of the Linux
man-pages project. A
description of the project, information about reporting bugs, and the latest
version of this page, can be found at
http://www.kernel.org/doc/man-pages/.
