PTHREAD_EQUAL(3)           POSIX Programmer's Manual          PTHREAD_EQUAL(3)



PPRROOLLOOGG
       This manual page is part of the POSIX Programmer's Manual.  The OS
       implementation of this interface may differ (consult the corresponding
       OS manual page for details of OS behavior), or the interface may not be
       implemented on OS.

NNAAMMEE
       pthread_equal -- compare thread IDs

SSYYNNOOPPSSIISS
       #include <pthread.h>

       int pthread_equal(pthread_t _t_1, pthread_t _t_2);

DDEESSCCRRIIPPTTIIOONN
       This function shall compare the thread IDs _t_1 and _t_2.

RREETTUURRNN VVAALLUUEE
       The _p_t_h_r_e_a_d___e_q_u_a_l() function shall return a non-zero value if _t_1 and _t_2
       are equal; otherwise, zero shall be returned.

       If either _t_1 or _t_2 are not valid thread IDs, the behavior is undefined.

EERRRROORRSS
       No errors are defined.

       The _p_t_h_r_e_a_d___e_q_u_a_l() function shall not return an error code of [[EEIINNTTRR]].

       _T_h_e _f_o_l_l_o_w_i_n_g _s_e_c_t_i_o_n_s _a_r_e _i_n_f_o_r_m_a_t_i_v_e_.

EEXXAAMMPPLLEESS
       None.

AAPPPPLLIICCAATTIIOONN UUSSAAGGEE
       None.

RRAATTIIOONNAALLEE
       Implementations may choose to define a thread ID as a structure. This
       allows additional flexibility and robustness over using an iinntt.  For
       example, a thread ID could include a sequence number that allows
       detection of ``dangling IDs'' (copies of a thread ID that has been
       detached). Since the C language does not support comparison on
       structure types, the _p_t_h_r_e_a_d___e_q_u_a_l() function is provided to compare
       thread IDs.

FFUUTTUURREE DDIIRREECCTTIIOONNSS
       None.

SSEEEE AALLSSOO
       _p_t_h_r_e_a_d___c_r_e_a_t_e(), _p_t_h_r_e_a_d___s_e_l_f()

       The Base Definitions volume of POSIX.1-2017, <<pptthhrreeaadd..hh>>

CCOOPPYYRRIIGGHHTT
       Portions of this text are reprinted and reproduced in electronic form
       from IEEE Std 1003.1-2017, Standard for Information Technology --
       Portable Operating System Interface (POSIX), The Open Group Base
       Specifications Issue 7, 2018 Edition, Copyright (C) 2018 by the
       Institute of Electrical and Electronics Engineers, Inc and The Open
       Group.  In the event of any discrepancy between this version and the
       original IEEE and The Open Group Standard, the original IEEE and The
       Open Group Standard is the referee document. The original Standard can
       be obtained online at http://www.opengroup.org/unix/online.html .

       Any typographical or formatting errors that appear in this page are
       most likely to have been introduced during the conversion of the source
       files to man page format. To report such errors, see
       https://www.kernel.org/doc/man-pages/reporting_bugs.html .



IEEE/The Open Group                  2017                     PTHREAD_EQUAL(3)
