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NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | ERRORS | ATTRIBUTES | CONFORMING TO | NOTES | SEE ALSO | COLOPHON |
PTHREAD_SELF(3) Linux Programmer's Manual PTHREAD_SELF(3)
pthread_self - obtain ID of the calling thread
#include <pthread.h>
pthread_t pthread_self(void);
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.
For an explanation of the terms used in this section, see
attributes(7).
┌───────────────┬───────────────┬─────────┐
│Interface │ Attribute │ Value │
├───────────────┼───────────────┼─────────┤
│pthread_self() │ Thread safety │ MT-Safe │
└───────────────┴───────────────┴─────────┘
POSIX.1-2001, POSIX.1-2008.
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).
pthread_create(3), pthread_equal(3), pthreads(7)
This page is part of release 4.12 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
https://www.kernel.org/doc/man-pages/.
Linux 2015-08-08 PTHREAD_SELF(3)
Pages that refer to this page: gettid(2), pthread_create(3), pthread_equal(3), pthread_getcpuclockid(3), pthread_kill(3), pthread_setaffinity_np(3), pthread_setschedparam(3), pthread_setschedprio(3), pthreads(7), signal-safety(7)