POSIX_SPAWNATTR_GETSCHEDPARAPMO(S3I)X Programmer's MPaOnSuIaXl_SPAWNATTR_GETSCHEDPARAM(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_spawnattr_getschedparam, posix_spawnattr_setschedparam -- get and
       set the spawn-schedparam attribute of a spawn attributes object
       (AADDVVAANNCCEEDD RREEAALLTTIIMMEE)

SSYYNNOOPPSSIISS
       #include <spawn.h>
       #include <sched.h>

       int posix_spawnattr_getschedparam(const posix_spawnattr_t
           *restrict _a_t_t_r, struct sched_param *restrict _s_c_h_e_d_p_a_r_a_m);
       int posix_spawnattr_setschedparam(posix_spawnattr_t *restrict _a_t_t_r,
           const struct sched_param *restrict _s_c_h_e_d_p_a_r_a_m);

DDEESSCCRRIIPPTTIIOONN
       The _p_o_s_i_x___s_p_a_w_n_a_t_t_r___g_e_t_s_c_h_e_d_p_a_r_a_m() function shall obtain the value of
       the _s_p_a_w_n_-_s_c_h_e_d_p_a_r_a_m attribute from the attributes object referenced by
       _a_t_t_r.

       The _p_o_s_i_x___s_p_a_w_n_a_t_t_r___s_e_t_s_c_h_e_d_p_a_r_a_m() function shall set the _s_p_a_w_n_-
       _s_c_h_e_d_p_a_r_a_m attribute in an initialized attributes object referenced by
       _a_t_t_r.

       The _s_p_a_w_n_-_s_c_h_e_d_p_a_r_a_m attribute represents the scheduling parameters to
       be assigned to the new process image in a spawn operation (if
       POSIX_SPAWN_SETSCHEDULER or POSIX_SPAWN_SETSCHEDPARAM is set in the
       _s_p_a_w_n_-_f_l_a_g_s attribute). The default value of this attribute is
       unspecified.

RREETTUURRNN VVAALLUUEE
       Upon successful completion, _p_o_s_i_x___s_p_a_w_n_a_t_t_r___g_e_t_s_c_h_e_d_p_a_r_a_m() shall
       return zero and store the value of the _s_p_a_w_n_-_s_c_h_e_d_p_a_r_a_m attribute of
       _a_t_t_r into the object referenced by the _s_c_h_e_d_p_a_r_a_m parameter; otherwise,
       an error number shall be returned to indicate the error.

       Upon successful completion, _p_o_s_i_x___s_p_a_w_n_a_t_t_r___s_e_t_s_c_h_e_d_p_a_r_a_m() shall
       return zero; otherwise, an error number shall be returned to indicate
       the error.

EERRRROORRSS
       These functions may fail if:

       EEIINNVVAALL The value specified by _a_t_t_r is invalid.

       The _p_o_s_i_x___s_p_a_w_n_a_t_t_r___s_e_t_s_c_h_e_d_p_a_r_a_m() function may fail if:

       EEIINNVVAALL The value of the attribute being set is not valid.

       _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
       These functions are part of the Spawn and Process Scheduling options
       and need not be provided on all implementations.

RRAATTIIOONNAALLEE
       None.

FFUUTTUURREE DDIIRREECCTTIIOONNSS
       None.

SSEEEE AALLSSOO
       _p_o_s_i_x___s_p_a_w_n(), _p_o_s_i_x___s_p_a_w_n_a_t_t_r___d_e_s_t_r_o_y(),
       _p_o_s_i_x___s_p_a_w_n_a_t_t_r___g_e_t_s_i_g_d_e_f_a_u_l_t(), _p_o_s_i_x___s_p_a_w_n_a_t_t_r___g_e_t_f_l_a_g_s(),
       _p_o_s_i_x___s_p_a_w_n_a_t_t_r___g_e_t_p_g_r_o_u_p(), _p_o_s_i_x___s_p_a_w_n_a_t_t_r___g_e_t_s_c_h_e_d_p_o_l_i_c_y(),
       _p_o_s_i_x___s_p_a_w_n_a_t_t_r___g_e_t_s_i_g_m_a_s_k()

       The Base Definitions volume of POSIX.1-2017, <<sscchheedd..hh>>, <<ssppaawwnn..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     POSIX_SPAWNATTR_GETSCHEDPARAM(3)
