SCHED_GETSCHEDULER(3)      POSIX Programmer's Manual     SCHED_GETSCHEDULER(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
       sched_getscheduler -- get scheduling policy (RREEAALLTTIIMMEE)

SSYYNNOOPPSSIISS
       #include <sched.h>

       int sched_getscheduler(pid_t _p_i_d);

DDEESSCCRRIIPPTTIIOONN
       The _s_c_h_e_d___g_e_t_s_c_h_e_d_u_l_e_r() function shall return the scheduling policy of
       the process specified by _p_i_d.  If the value of _p_i_d is negative, the
       behavior of the _s_c_h_e_d___g_e_t_s_c_h_e_d_u_l_e_r() function is unspecified.

       The values that can be returned by _s_c_h_e_d___g_e_t_s_c_h_e_d_u_l_e_r() are defined in
       the _<_s_c_h_e_d_._h_> header.

       If a process specified by _p_i_d exists, and if the calling process has
       permission, the scheduling policy shall be returned for the process
       whose process ID is equal to _p_i_d.

       If _p_i_d is zero, the scheduling policy shall be returned for the calling
       process.

RREETTUURRNN VVAALLUUEE
       Upon successful completion, the _s_c_h_e_d___g_e_t_s_c_h_e_d_u_l_e_r() function shall
       return the scheduling policy of the specified process.  If
       unsuccessful, the function shall return -1 and set _e_r_r_n_o to indicate
       the error.

EERRRROORRSS
       The _s_c_h_e_d___g_e_t_s_c_h_e_d_u_l_e_r() function shall fail if:

       EEPPEERRMM  The requesting process does not have permission to determine the
              scheduling policy of the specified process.

       EESSRRCCHH  No process can be found corresponding to that specified by _p_i_d.

       _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
       None.

SSEEEE AALLSSOO
       _s_c_h_e_d___g_e_t_p_a_r_a_m(), _s_c_h_e_d___s_e_t_p_a_r_a_m(), _s_c_h_e_d___s_e_t_s_c_h_e_d_u_l_e_r()

       The Base Definitions volume of POSIX.1-2017, <<sscchheedd..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                SCHED_GETSCHEDULER(3)
