SCHED_GETPARAM(3)          POSIX Programmer's Manual         SCHED_GETPARAM(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_getparam -- get scheduling parameters (RREEAALLTTIIMMEE)

SSYYNNOOPPSSIISS
       #include <sched.h>

       int sched_getparam(pid_t _p_i_d, struct sched_param *_p_a_r_a_m);

DDEESSCCRRIIPPTTIIOONN
       The _s_c_h_e_d___g_e_t_p_a_r_a_m() function shall return the scheduling parameters of
       a process specified by _p_i_d in the sscchheedd__ppaarraamm structure pointed to by
       _p_a_r_a_m.

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

       If _p_i_d is zero, the scheduling parameters for the calling process shall
       be returned. The behavior of the _s_c_h_e_d___g_e_t_p_a_r_a_m() function is
       unspecified if the value of _p_i_d is negative.

RREETTUURRNN VVAALLUUEE
       Upon successful completion, the _s_c_h_e_d___g_e_t_p_a_r_a_m() function shall return
       zero. If the call to _s_c_h_e_d___g_e_t_p_a_r_a_m() is unsuccessful, the function
       shall return a value of -1 and set _e_r_r_n_o to indicate the error.

EERRRROORRSS
       The _s_c_h_e_d___g_e_t_p_a_r_a_m() function shall fail if:

       EEPPEERRMM  The requesting process does not have permission to obtain the
              scheduling parameters 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_s_c_h_e_d_u_l_e_r(), _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.1-2008, <<sscchheedd..hh>>

CCOOPPYYRRIIGGHHTT
       Portions of this text are reprinted and reproduced in electronic form
       from IEEE Std 1003.1, 2013 Edition, Standard for Information Technology
       -- Portable Operating System Interface (POSIX), The Open Group Base
       Specifications Issue 7, Copyright (C) 2013 by the Institute of
       Electrical and Electronics Engineers, Inc and The Open Group.  (This is
       POSIX.1-2008 with the 2013 Technical Corrigendum 1 applied.) 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.unix.org/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                  2013                    SCHED_GETPARAM(3)
