pthread_self - obtain ID of the calling thread
Compile and link with -pthread.
() function returns the ID of the calling thread. This is
the same value that is returned in *thread
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 (
); use pthread_equal(3)
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
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
The thread ID returned by pthread_self
() is not the same thing as the
kernel thread ID returned by a call to gettid(2)
This page is part of release 3.44 of the Linux man-pages
description of the project, and information about reporting bugs, can be found