POSIX_TRACE_EVENTTYPELIST_GEPTONSEIXXT_PIrDo(g3r)amPmOeSrI'Xs_TMRaAnCuEa_lEVENTTYPELIST_GETNEXT_ID(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
       posix_trace_eventtypelist_getnext_id, posix_trace_eventtypelist_rewind
       -- iterate over a mapping of trace event types (TTRRAACCIINNGG)

SSYYNNOOPPSSIISS
       #include <trace.h>

       int posix_trace_eventtypelist_getnext_id(trace_id_t _t_r_i_d,
           trace_event_id_t *restrict _e_v_e_n_t, int *restrict _u_n_a_v_a_i_l_a_b_l_e);
       int posix_trace_eventtypelist_rewind(trace_id_t _t_r_i_d);

DDEESSCCRRIIPPTTIIOONN
       The first time _p_o_s_i_x___t_r_a_c_e___e_v_e_n_t_t_y_p_e_l_i_s_t___g_e_t_n_e_x_t___i_d() is called, the
       function shall return in the variable pointed to by _e_v_e_n_t the first
       trace event type identifier of the list of trace events of the trace
       stream identified by the _t_r_i_d argument. Successive calls to
       _p_o_s_i_x___t_r_a_c_e___e_v_e_n_t_t_y_p_e_l_i_s_t___g_e_t_n_e_x_t___i_d() return in the variable pointed
       to by _e_v_e_n_t the next trace event type identifier in that same list.
       Each time a trace event type identifier is successfully written into
       the variable pointed to by the _e_v_e_n_t argument, the variable pointed to
       by the _u_n_a_v_a_i_l_a_b_l_e argument shall be set to zero. When no more trace
       event type identifiers are available, and so none is returned, the
       variable pointed to by the _u_n_a_v_a_i_l_a_b_l_e argument shall be set to a value
       different from zero.

       The _p_o_s_i_x___t_r_a_c_e___e_v_e_n_t_t_y_p_e_l_i_s_t___r_e_w_i_n_d() function shall reset the next
       trace event type identifier to be read to the first trace event type
       identifier from the list of trace events used in the trace stream
       identified by _t_r_i_d.

RREETTUURRNN VVAALLUUEE
       Upon successful completion, these functions shall return a value of
       zero. Otherwise, they shall return the corresponding error number.

       The _p_o_s_i_x___t_r_a_c_e___e_v_e_n_t_t_y_p_e_l_i_s_t___g_e_t_n_e_x_t___i_d() function stores the trace
       event type identifier value in the object pointed to by _e_v_e_n_t, if
       successful.

EERRRROORRSS
       These functions shall fail if:

       EEIINNVVAALL The _t_r_i_d argument was not a valid trace stream identifier.

       _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
       None.

FFUUTTUURREE DDIIRREECCTTIIOONNSS
       The _p_o_s_i_x___t_r_a_c_e___e_v_e_n_t_t_y_p_e_l_i_s_t___g_e_t_n_e_x_t___i_d() and
       _p_o_s_i_x___t_r_a_c_e___e_v_e_n_t_t_y_p_e_l_i_s_t___r_e_w_i_n_d() functions may be removed in a future
       version.

SSEEEE AALLSSOO
       _p_o_s_i_x___t_r_a_c_e___e_v_e_n_t(), _p_o_s_i_x___t_r_a_c_e___e_v_e_n_t_i_d___e_q_u_a_l(),
       _p_o_s_i_x___t_r_a_c_e___g_e_t_n_e_x_t___e_v_e_n_t()

       The Base Definitions volume of POSIX.1-2017, <<ttrraaccee..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                  201P7OSIX_TRACE_EVENTTYPELIST_GETNEXT_ID(3)
