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sched_setscheduler, sched_getscheduler — ???????塼?????ˤȥ??????塼???ѥ??᡼???????? / ????

?饤?֥???

Standard C Library (libc, -lc)

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<sched.h> int sched_setscheduler(pid_t pid, int policy, const struct sched_param *param) int sched_getscheduler(pid_t pid)

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sched_setscheduler() ?????ƥॳ?????ϡ? pid ?ǻ??ꤷ???ץ??????Υ??????塼?????ˤȥ??????塼???ѥ??᡼???򡢤??줾?졢 policy ?????? param ???ؤ? sched_param ??¤?Τλ??ꤹ???ѥ??᡼???????ꤷ?ޤ??? param ??¤?ΤΥ????? sched_priority ???ͤϡ? policy ?ǻ??ꤹ?륹?????塼???????Ѥ? ͥ?????ϰ??? (ξü?ޤ?) ???????Ǥ???ɬ?פ??????ޤ???

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

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

pid ?? 0 ?ξ??硢?ƤӽФ????ץ????????Ф??? ???????塼?????ˤȥ??????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???

???????塼?????ˤ? <sched.h> ???ˤ????ޤ???

[SCHED_FIFO]

?饦???ɥ??ӥ󥹥????塼???Τʤ??? ???????? (FIFO) ͥ?????̸??ꥹ?????塼?롣

[SCHED_OTHER]

ɸ???Υ????ॷ???????󥰥??????塼?顣

[SCHED_RR]

Ʊ??ͥ?????̤Υץ??????֤ǤΥ饦???ɥ??ӥ󥹥????塼?롣

sched_param ??¤?Τ? <sched.h> ???????????Ƥ??ޤ???

struct sched_param {
	int sched_priority;	/* ???????塼??ͥ?????? */
};

sched_getscheduler() ?????ƥॳ?????ϡ? pid ?ǻ??ꤹ???ץ??????Υ??????塼?????ˤ??֤??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_getscheduler ?????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??ϡ????ε?ǽ?򥵥ݡ??Ȥ????褦?˹????????Ƥ??ޤ?????

[EPERM]

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

[ESRCH]

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

[EINVAL]

policy ???????ͤ?̵???Ǥ??뤫???ޤ??? param ?˴ޤޤ??Ƥ??? 1 ?Ĥޤ???ʣ???Υѥ??᡼?????? ???ꤵ?줿???????塼?????ˤ?ͭ?????ϰϤγ??ˤ????ޤ???

??Ϣ????

sched_getparam(2), sched_get_priority_max(2), sched_get_priority_min(2), sched_rr_get_interval(2), sched_setparam(2), sched_yield(2)

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sched_setscheduler() ?????ƥॳ?????? sched_getscheduler() ?????ƥॳ?????? IEEE Std 1003.1b-1993 (“POSIX.1b”) ?˽??򤷤Ƥ??ޤ???