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sched_setparam, sched_getparam — ???????塼???ѥ??᡼???????? / ????

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Standard C Library (libc, -lc)

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<sched.h> int sched_setparam(pid_t pid, const struct sched_param *param) int sched_getparam(pid_t pid, struct sched_param *param)

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sched_setparam() ?????ƥॳ?????ϡ? pid ?ǻ??ꤹ???ץ??????Υ??????塼???ѥ??᡼?????? param ???ؤ???¤?? sched_param ?λ??ꤹ???ͤ????ꤷ?ޤ??? ??¤?? param ?Υ????? sched_priority ???ͤϡ? pid ?ǻ??ꤹ???ץ??????θ??ߤΥ??????塼???????Ѥ? ͥ???????ϰ??? (ξü?ޤ?) ???????Ǥ???ɬ?פ??????ޤ??? ͥ?????̤ο??ͤ??⤤?ۤ?ͥ?????̤??⤤???Ȥ?ɽ???ޤ???

???μ????Ǥϡ? pid ???ͤ????ξ??硢?????ƥॳ?????Ͻ????˼??Ԥ??ޤ???

pid ?ǻ??ꤹ???ץ???????¸?ߤ??????? ?ƤӽФ????ץ??????˥ѡ??ߥå????󤬤??????硢 ?ץ????? ID ?? pid ?????????ץ????????Ф??ƥ??????塼???ѥ??᡼???????ꤷ?ޤ???

pid ?? 0 ?ξ??硢?ƤӽФ????ץ????????Ф??? ???????塼???ѥ??᡼???????ꤷ?ޤ???

???μ????Ǥϡ??????ץ????????̤Υץ??????Υ??????塼???ѥ??᡼???? ???ıƶ????ڤܤ????Τ??Ȥ??????ˤϡ??????ߥ????????????Ȥ??? IEEE Std 1003.1b-1993 (“POSIX.1b”) ?˻??ꤵ???Ƥ??????ΤǤ???

???????åȥץ??????ϡ??¹????ˤ????¹????Ǥʤ??ˤ??衢 ͥ?????̤??????????ޤ??Ϥ????⤤?? ¾?Τ??٤Ƥμ¹Բ?ǽ?ʥץ????????¹Ԥ??????褦?˥??????塼?뤵?줿???ǡ? ?¹Ԥ??Ƴ????ޤ???

pid ?????ǻ??ꤹ???ץ???????ͥ?????̤??? ?Ǥ?ͥ?????̤??㤤?¹????Υץ???????ͥ?????̤????⤯???ꤵ???Ƥ??ꡢ ???????????Υץ??????μ¹Խ??????Ǥ??Ƥ??????硢 pid ?????ǻ??ꤹ???ץ??????? ͥ?????̤??Ǥ??㤤?¹????Υץ????????ץꥨ???ץȤ??ޤ??? Ʊ???褦?ˡ? sched_setparam() ???ƤӽФ??Ƥ????ץ???????????ͥ?????̤??? 1 ?Ĥޤ???ʣ???ζ??Ǥʤ??ץ??????ꥹ?Ȥ?ͥ?????̤????㤯???ꤹ?????硢 ͥ?????̤??Ǥ??⤤?ꥹ?Ȥ???Ƭ?Υץ??????? ?ƤӽФ????ץ????????ץꥨ???ץȤ??ޤ??? ???Τ褦?ˡ????????Υ??????Ǥ⡢ ͥ?????̤ι⤤?ץ????????¹Ԥ????Ƥ??ޤ??ޤǡ? ???Υץ????????׵ᤷ??ͥ???????ѹ??δ?λ???Τ????????ʤ???ǽ?????????ޤ???

???μ????Ǥϡ? pid ?ǻ??ꤹ???ץ??????θ??ߤΥ??????塼?????ˤ??̾??Υ????ॷ?????????? (SCHED_OTHER; POSIX ???????Ǥʤ??????? SCHED_NORMAL) ?Ǥ??뤫?????ɥ????? (POSIX ???????Ǥʤ??????? SCHED_IDLE) ?Ǥ????ʤ顢 ????ư???ϡ??ºߤ????ꥢ?륿????ͥ?????̤??????㤤ͥ?????̤? SCHED_RR ?ǥץ????????¹Ԥ????Ƥ??????Τ褦?ˤʤ??ޤ???

sched_getparam() ?ؿ??ϡ? pid ?ǻ??ꤹ???ץ??????Υ??????塼???ѥ??᡼???? param ???ؤ? sched_param ??¤?Τ????????֤??ޤ???

pid ?ǻ??ꤹ???ץ???????¸?ߤ??Ƥ??ġ? ?ƤӽФ????ץ??????˥ѡ??ߥå????󤬤??????硢 ?ץ????? ID ?? pid ?????????ץ??????Υ??????塼???ѥ??᡼?????֤??ޤ???

???μ????Ǥϡ??????ץ????????̤Υץ??????Υ??????塼???ѥ??᡼???? ???????????뤫?????ˤϡ??ɼ??ꥹ???????????Ȥ??? IEEE Std 1003.1b-1993 (“POSIX.1b”) ?˾??⤵???Ƥ??????ΤǤ???

pid ?? 0 ?ξ??硢?ƤӽФ????ץ??????Υ??????塼???ѥ??᡼?????֤??ޤ??? ???μ????Ǥϡ? pid ?????ξ??硢 sched_getparam ?????ƥॳ?????Ͻ????˼??Ԥ??ޤ???

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Upon successful completion, the value 0 is returned; otherwise the value -1 is returned and the global variable errno is set to indicate the error.

???顼

?????˼??Ԥ????ȡ? errno ???б??????ͤ????ꤷ?ޤ?:

[ENOSYS]

?????ƥ??Ϥ??ε?ǽ?򥵥ݡ??Ȥ????褦?˹????????Ƥ??ޤ?????

[EPERM]

?׵ᤷ?Ƥ????ץ??????ϡ? IEEE Std 1003.1b-1993 (“POSIX.1b”) ?Ǿ??⤵???Ƥ????ѡ??ߥå??????????äƤ??ޤ?????

[ESRCH]

pid ?ǻ??ꤷ???ץ????????б??????ץ??????????Ĥ????ޤ?????

[EINVAL]

sched_setparam() ?ǡ??׵ᤵ?줿 1 ?İʾ??Υ??????塼???ѥ??᡼???????????? pid ?Υ??????塼?????ˤ????????줿?ϰϤγ?¦?ˤ????ޤ???

??Ϣ????

sched_get_priority_max(2), sched_get_priority_min(2), sched_getscheduler(2), sched_rr_get_interval(2), sched_setscheduler(2), sched_yield(2)

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sched_setparam() ?????ƥॳ?????? sched_getparam() ?????ƥॳ?????? IEEE Std 1003.1b-1993 (“POSIX.1b”) ??Ŭ?礷?Ƥ??ޤ???