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GETPRIORITY
Section: Linux Programmer's Manual (2)Updated: 24 July 1993
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getpriority, setpriority - ¥×¥í¥°¥é¥à¤Î¥¹¥±¥¸¥å¡¼¥ê¥ó¥°¤ÎÍ¥ÀèÅÙ¤ò¼èÆÀ/ÀßÄꤹ¤ë½ñ¼°
#include <sys/time.h>#include <sys/resource.h>
int getpriority(int which, int who);
int setpriority(int which, int who, int prio);
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getpriority ¤ÏÀ®¸ù¤·¤¿¾ì¹ç¤Ë¤â -1 ¤ÎÃͤòÊÖ¤¹²ÄǽÀ¤¬¤¢¤ë¤Î¤Ç¡¢ ¸Æ¤Ó½Ð¤·¤ÎÁ°¤Ë³°ÉôÊÑ¿ô¤Î errno ¤ò¥¯¥ê¥¢¤·¡¢¸Æ¤Ó½Ð¤·¤Î¸å¤ËÊÖ¤êÃͤΠ-1 ¤¬ÀµÅö¤ÊÃͤ« ¥¨¥é¡¼¤«¤òȽÊ̤¹¤ëɬÍפ¬¤¢¤ë¡£¥¨¥é¡¼¤¬¤Ê¤ì¤Ð setpriority ¥³¡¼¥ë¤Ï 0 ¤òÊÖ¤¹¡£¥¨¥é¡¼¤¬¤¢¤ì¤Ð -1 ¤òÊÖ¤¹¡£
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- ESRCH
- which ¤È who ¤Ç»ØÄꤵ¤ì¤¿¥×¥í¥»¥¹¤¬Â¸ºß¤·¤Ê¤¤¡£
- EINVAL
- which ¤¬ PRIO_PROCESS, PRIO_PGRP, PRIO_USER ¤Î¤É¤ì¤«¤Ç¤Ê¤¤¡£
¾åµ¤Î¤â¤Î¤Ë²Ã¤¨¤Æ setpriority ¤Ç¤Ï°Ê²¼¤Î¥¨¥é¡¼¤¬¤¢¤ë:
- EPERM
- ¥×¥í¥»¥¹¤Ï¸«¤Ä¤«¤Ã¤¿¤¬¡¢¤½¤Î¼Â¸ú(effective)¥æ¡¼¥¶¡¼ID¤Þ¤¿¤Ï ¼Â(real)¥æ¡¼¥¶¡¼ID ¤¬¸Æ¤Ó½Ð¤·¼Ô¤Î¼Â¸ú¥æ¡¼¥¶¡¼ID ¤È°ìÃפ·¤Ê¤¤¡£
- EACCES
- ¥¹¡¼¥Ñ¡¼¡¦¥æ¡¼¥¶¡¼°Ê³°¤¬¥×¥í¥»¥¹¤Ë¤è¤êÄ㤤ͥÀè¤òÍ¿¤¨¤è¤¦¤È¤·¤¿¡£
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SVr4, 4.4BSD (¤³¤ì¤é¤Î´Ø¿ô¥³¡¼¥ë¤Ï BSD 4.2 ¤Ç»Ï¤á¤Ë¸½¤ï¤ì¤¿).´ØÏ¢¹àÌÜ
nice(1), fork(2), renice(8)