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NICE

Section: Linux Programmer's Manual (2)
Updated: 2001-06-04
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nice - ¥×¥í¥»¥¹¤ÎÍ¥ÀèÅÙ¤òÊѹ¹¤¹¤ë  

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#include <unistd.h>

int nice(int inc);  

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nice ¤Ï inc ¤ÎÃͤò nice ¤ò¸Æ¤ó¤À¥×¥í¥»¥¹¤Î nice Ãͤ˲䨤ë (nice Ãͤ¬Â礭¤¤¿ôÃͤۤÉÄ㤤ͥÀèÅÙ¤òɽ¤¹)¡£ Éé¤Î¿ô¤ò»ØÄꤹ¤ë¡¢¤Ä¤Þ¤ê¡¢°ÊÁ°¤è¤ê¤âÍ¥ÀèÅÙ¤ò¾å¤²¤ë¤È¤¤¤¦»ØÄ꤬¤Ç¤­¤ë¤Î¤Ï ¥¹¡¼¥Ñ¡¼¥æ¡¼¥¶¡¼¤À¤±¤Ë¸Â¤é¤ì¤ë¡£

 

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À®¸ù¤·¤¿¾ì¹ç 0 ¤¬Ê֤롣¼ºÇÔ¤·¤¿¾ì¹ç -1 ¤¬Ê֤ꡢ errno ¤¬¥¨¥é¡¼¤ÎÆâÍÆ¤Ë½¾¤Ã¤ÆÀßÄꤵ¤ì¤ë¡£  

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EPERM
¥¹¡¼¥Ñ¡¼¥æ¡¼¥¶¡¼°Ê³°¤¬ inc ¤ËÉé¤Î¿ôÃͤò»ØÄꤷ¤ÆÍ¥ÀèÅÙ¤ò¾å¤²¤è¤¦¤È¤·¤¿¡£
 

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SVr4, SVID EXT, AT&T, X/OPEN, BSD 4.3¡£ ¤·¤«¤·¡¢Linux ¤È glibc (2.2.3¤Þ¤Ç) ¤Ç¤ÏÊÖ¤êÃͤÏɸ½à¤È°Û¤Ê¤ë¡£ ¾ÜºÙ¤Ï°Ê²¼¤ò»²¾È¤Î¤³¤È¡£ SVr4 ¤Ë¤Ï¾¤Ë EINVAL ¥¨¥é¡¼¥³¡¼¥É¤Ë¤Ä¤¤¤Æ¤Îµ­½Ò¤¬¤¢¤ë¡£  

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SUSv2 ¤Ç¤Ï¡¢¤³¤Î¥ë¡¼¥Á¥ó¤Ï¿·¤·¤¤ nice ÃͤòÊÖ¤¹¤³¤È¤Ë¤Ê¤Ã¤Æ¤¤¤ë¡£ °ìÊý¡¢Linux ¥·¥¹¥Æ¥à¥³¡¼¥ë¤È (g)libc ¥ë¡¼¥Á¥ó¤Ï À®¸ù»þ¤Ë 0 ¤òÊÖ¤¹¡£ ¿·¤·¤¤ nice ÃÍ¤Ï getpriority(2) ¤òÍѤ¤¤ë¤³¤È¤Ë¤è¤Ã¤ÆÆÀ¤ë¤³¤È¤¬¤Ç¤­¤ë¡£ nice ¤¬¿·¤·¤¤ nice ÃͤòÊÖ¤¹¼ÂÁõ¤Ç¤Ï¡¢¹çˡŪ¤Ë -1 ¤¬ÊÖ¤µ¤ì¤ë²ÄǽÀ­¤¬ ¤¢¤ë¤³¤È¤ËÃí°Õ¤¹¤ë¤³¤È¡£ ³Î¼Â¤Ë¥¨¥é¡¼¤ò¸¡½Ð¤¹¤ë¤¿¤á¤Ë¤Ï¡¢ ¸Æ¤Ó½Ð¤·¤ÎÁ°¤Ë errno ¤Ë 0 ¤òÀßÄꤷ¡¢ nice ¤¬ -1 ¤òÊÖ¤·¤¿¤È¤­¤Ë errno ¤ò¥Á¥§¥Ã¥¯¤¹¤ë¤ÈÎɤ¤¡£  

´ØÏ¢¹àÌÜ

nice(1), getpriority(2), setpriority(2), fork(2), renice(8)


 

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