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
(3) call that created this thread.
This function always succeeds, returning the calling thread's ID.
This function always succeeds.
For an explanation of the terms used in this section, see attributes
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
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 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
The thread ID returned by pthread_self
() is not the same thing as the
kernel thread ID returned by a call to gettid