166 lines
5.6 KiB
Groff
166 lines
5.6 KiB
Groff
.\" Copyright (c) 1993
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.\" The Regents of the University of California. All rights reserved.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\" 3. All advertising materials mentioning features or use of this software
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.\" must display the following acknowledgement:
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.\" This product includes software developed by the University of
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.\" California, Berkeley and its contributors.
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.\" 4. Neither the name of the University nor the names of its contributors
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.\" may be used to endorse or promote products derived from this software
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.\" without specific prior written permission.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\" SUCH DAMAGE.
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.\"
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.\" @(#)mlock.2 8.2 (Berkeley) 12/11/93
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.\" %FreeBSD: src/lib/libc/sys/mlock.2,v 1.12 2002/08/24 00:39:43 mike Exp %
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.\"
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.\" $FreeBSD$
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.Dd June 2, 1993
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.Dt MLOCK 2
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.Os
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.Sh ̾¾Î
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.Nm mlock ,
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.Nm munlock
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.Nd ʪÍý¥Ú¡¼¥¸¤ò¥á¥â¥êÆâ¤Ç¥í¥Ã¥¯ (¥¢¥ó¥í¥Ã¥¯) ¤¹¤ë
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.Sh ¥é¥¤¥Ö¥é¥ê
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.Lb libc
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.Sh ½ñ¼°
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.In sys/mman.h
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.Ft int
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.Fn mlock "const void *addr" "size_t len"
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.Ft int
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.Fn munlock "const void *addr" "size_t len"
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.Sh ²òÀâ
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.Fn mlock
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¥·¥¹¥Æ¥à¥³¡¼¥ë¤Ï¡¢
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.Fa addr
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¤«¤é³«»Ï¤¹¤ë
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.Fa len
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¥Ð¥¤¥È¤Î²¾ÁÛ¥¢¥É¥ì¥¹ÈϰϤËÂбþ¤¹¤ëʪÍý¥Ú¡¼¥¸¤ò¥á¥â¥ê¤Ë¥í¥Ã¥¯¤·¤Þ¤¹¡£
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.Fn munlock
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¸Æ¤Ó½Ð¤·¤Ï¡¢1 ¤Ä°Ê¾å¤Î
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.Fn mlock
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¸Æ¤Ó½Ð¤·¤Ë¤è¤Ã¤Æ¥í¥Ã¥¯¤µ¤ì¤Æ¤¤¤¿¥Ú¡¼¥¸¤ò¥¢¥ó¥í¥Ã¥¯¤·¤Þ¤¹¡£
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¤³¤ì¤é¤ÎξÊý¤Ë¤ª¤¤¤Æ¡¢
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.Fa addr
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¥Ñ¥é¥á¡¼¥¿¤Ï¥Ú¡¼¥¸¥µ¥¤¥º¤ÎÀ°¿ôÇܤǤʤ±¤ì¤Ð¤¤¤±¤Þ¤»¤ó¡£
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.Fa len
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¥Ñ¥é¥á¡¼¥¿¤¬¥Ú¡¼¥¸¥µ¥¤¥º¤ÎÀ°¿ôÇܤǤʤ¤¾ì¹ç¡¢ÀÚ¤ê¾å¤²¤é¤ì¤Þ¤¹¡£
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ÈÏ°ÏÁ´ÂΤ¬³ÎÊݤµ¤ì¤Æ¤¤¤ëɬÍפ¬¤¢¤ê¤Þ¤¹¡£
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.Pp
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.Fn mlock
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¸Æ¤Ó½Ð¤·¤Î¸å¡¢»Ø¼¨¤µ¤ì¤¿¥Ú¡¼¥¸¤Ï¡¢¥¢¥ó¥í¥Ã¥¯¤µ¤ì¤ë¤Þ¤Ç
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¤·¤«¤·¡¢TLB ¤Î´ÉÍý¤ò¥½¥Õ¥È¥¦¥§¥¢¤Ç¼ÂÁõ¤·¤Æ¤¤¤ë¥¢¡¼¥¥Æ¥¯¥Á¥ã¤Ç¤Ï¡¢
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Êݸî°ãÈ¿¥Õ¥©¥ë¥È¡¢¤Þ¤¿¤Ï TLB ¥ß¥¹¥Õ¥©¥ë¥È¤òµ¯¤³¤¹²ÄǽÀ¤Ï¤¢¤ê¤Þ¤¹¡£
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ʪÍý¥Ú¡¼¥¸¤Ï¥á¥â¥ê¤Ëα¤Þ¤ê¤Þ¤¹¡£
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Ê£¿ô¤Î¥×¥í¥»¥¹¤¬¡¢¤½¤ì¤¾¤ì¤Î²¾ÁÛ¥¢¥É¥ì¥¹¥Þ¥Ã¥Ô¥ó¥°¤«¤é
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Ʊ¤¸ÊªÍý¥Ú¡¼¥¸¤ò¥í¥Ã¥¯¤¹¤ë²ÄǽÀ¤¬¤¢¤ê¤Þ¤¹¡£
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ƱÍͤˡ¢1 ¤Ä¤Î¥×¥í¥»¥¹¤¬Æ±¤¸¥Ú¡¼¥¸¤ËÂФ¹¤ë°Û¤Ê¤ëÊ£¿ô¤Î
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²¾Áۥޥåԥ󥰤ˤè¤Ã¤Æ¡¢¤Þ¤¿¤ÏƱ¤¸¥¢¥É¥ì¥¹ÈϰϤؤΥͥ¹¥È¤·¤¿
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.Fn mlock
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¸Æ¤Ó½Ð¤·¤Ë¤è¤Ã¤Æ¡¢¥Ú¡¼¥¸¤ò¿½Å¤Ë¥í¥Ã¥¯¤¹¤ë²ÄǽÀ¤¬¤¢¤ê¤Þ¤¹¡£
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¥¢¥ó¥í¥Ã¥¯¤Ï¡¢
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.Fn munlock
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¤Ë¤è¤Ã¤ÆÌÀ¼¨Åª¤Ë¡¢¤Þ¤¿¤Ï
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.Fn munmap
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¤Ë¤è¤Ã¤Æ°ÅÌÛŪ¤Ë¹Ô¤ï¤ì¤Þ¤¹¡£
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.Fn munmap
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¤Ï¥Þ¥Ã¥×¤µ¤ì¤Æ¤¤¤Ê¤¤¥¢¥É¥ì¥¹ÈϰϤγä¤êÅö¤Æ¤ò²ò½ü¤·¤Þ¤¹¡£
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¥í¥Ã¥¯¤µ¤ì¤¿¥Þ¥Ã¥Ô¥ó¥°¤Ï
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.Xr fork 2
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¤Ë¤è¤ë»Ò¥×¥í¥»¥¹¤Ë¤Ï·Ñ¾µ¤µ¤ì¤Þ¤»¤ó¡£
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.Pp
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ʪÍý¥á¥â¥ê¤ÏÀøºßŪ¤Ë˳¤·¤¤¥ê¥½¡¼¥¹¤Ê¤Î¤Ç¡¢¥×¥í¥»¥¹¤Ï
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¤É¤Î¤¯¤é¤¤¥í¥Ã¥¯¤Ç¤¤ë¤«¤ÎÀ©¸Â¤ò¼õ¤±¤Þ¤¹¡£
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1 ¤Ä¤Î¥×¥í¥»¥¹¤Ï¡¢¥·¥¹¥Æ¥àÁ´ÂΤ˶¦Ä̤Π``¸ÇÄꤵ¤ì¤¿¤Ú¡¼¥¸'' ¸Â³¦¡¢
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¤Þ¤¿¤Ï¥×¥í¥»¥¹¤´¤È¤Î
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.Li RLIMIT_MEMLOCK
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¥ê¥½¡¼¥¹¸Â³¦¤Î¤¤¤º¤ì¤«¾®¤µ¤¤Êý¤ÎÃͤޤÇ
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.Fn mlock
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¤Ç¤¤Þ¤¹¡£
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.Pp
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¤³¤ì¤é¤Î¸Æ¤Ó½Ð¤·¤¬ÍøÍѤǤ¤ë¤Î¤Ï¥¹¡¼¥Ñ¥æ¡¼¥¶¤À¤±¤Ç¤¹¡£
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.Sh Ìá¤êÃÍ
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.Rv -std
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.Pp
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¸Æ¤Ó½Ð¤·¤¬À®¸ù¤¹¤ë¤È¡¢ÈÏ°ÏÆâ¤Î¤¹¤Ù¤Æ¤Î¥Ú¡¼¥¸¤¬¥í¥Ã¥¯ (¥¢¥ó¥í¥Ã¥¯) ¤µ¤ì¤Þ¤¹¡£
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¼ºÇÔ¤·¤¿¾ì¹ç¤Ï¡¢ÈÏ°ÏÆâ¤Î¤¹¤Ù¤Æ¤Î¥Ú¡¼¥¸¤Î¥í¥Ã¥¯¾õÂÖ¤ÏÊѹ¹¤µ¤ì¤Þ¤»¤ó¡£
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.Sh ¥¨¥é¡¼
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.Fn mlock
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¤Ï¼¡¤Î¾ì¹ç¤Ë½èÍý¤ò¼ºÇÔ¤·¤Þ¤¹:
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.Bl -tag -width Er
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.It Bq Er EPERM
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¸Æ¤Ó½Ð¤·Â¦¤¬¥¹¡¼¥Ñ¥æ¡¼¥¶¤Ç¤Ï¤¢¤ê¤Þ¤»¤ó¡£
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.It Bq Er EINVAL
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»ØÄꤵ¤ì¤¿¥¢¥É¥ì¥¹¤¬¥Ú¡¼¥¸¶³¦¤ËÀ°Î󤵤ì¤Æ¤¤¤Ê¤¤¤«¡¢¤Þ¤¿¤ÏŤµ¤¬Éé¤Ç¤¹¡£
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.It Bq Er EAGAIN
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»Ø¼¨¤µ¤ì¤¿ÈϰϤΥí¥Ã¥¯¤Ë¤è¤Ã¤Æ¡¢¥í¥Ã¥¯¤µ¤ì¤¿¥á¥â¥ê¤Ë¤Ä¤¤¤Æ¤Î
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¥·¥¹¥Æ¥à¸Â³¦¤Þ¤¿¤Ï¥×¥í¥»¥¹¤´¤È¤Î¸Â³¦¤òĶ²á¤·¤Æ¤·¤Þ¤¤¤Þ¤¹¡£
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.It Bq Er ENOMEM
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»Ø¼¨¤µ¤ì¤¿¥¢¥É¥ì¥¹ÈϰϤΰìÉô¤¬³ä¤êÅö¤Æ¤é¤ì¤Æ¤¤¤Þ¤»¤ó¡£
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¥Ú¡¼¥¸¤Î¥Õ¥©¥ë¥È / ¥Þ¥Ã¥Ô¥ó¥°¤Ç¥¨¥é¡¼¤¬¤¢¤ê¤Þ¤·¤¿¡£
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.El
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.Fn munlock
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¤Ï¼¡¤Î¾ì¹ç¤Ë¼ºÇÔ¤·¤Þ¤¹:
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.Bl -tag -width Er
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.It Bq Er EPERM
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¸Æ¤Ó½Ð¤·Â¦¤¬¥¹¡¼¥Ñ¥æ¡¼¥¶¤Ç¤Ï¤¢¤ê¤Þ¤»¤ó¡£
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.It Bq Er EINVAL
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»ØÄꤵ¤ì¤¿¥¢¥É¥ì¥¹¤¬¥Ú¡¼¥¸¶³¦¤ËÀ°Î󤷤Ƥ¤¤Ê¤¤¤«¡¢¤Þ¤¿¤ÏŤµ¤¬Éé¤Ç¤¹¡£
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.It Bq Er ENOMEM
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»Ø¼¨¤µ¤ì¤¿¥¢¥É¥ì¥¹ÈϰϤΰìÉô¤¬³ä¤êÅö¤Æ¤é¤ì¤Æ¤¤¤Þ¤»¤ó¡£
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.El
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.Sh ´ØÏ¢¹àÌÜ
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.Xr fork 2 ,
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.Xr mincore 2 ,
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.Xr minherit 2 ,
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.Xr mmap 2 ,
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.Xr munmap 2 ,
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.Xr setrlimit 2 ,
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.Xr getpagesize 3
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.Sh ¥Ð¥°
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Sun ¤Î¼ÂÁõ¤È°Û¤Ê¤ê¡¢Æ±¤¸¥¢¥É¥ì¥¹ÈϰϤ˴ؤ¹¤ëÊ£¿ô¤Î
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.Fn mlock
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¸Æ¤Ó½Ð¤·¤ËÂФ·¤Æ¡¢¼ÂºÝ¤Ë¥Ú¡¼¥¸¤ò¥¢¥ó¥í¥Ã¥¯¤¹¤ë¤¿¤á¤ËÂбþ¤¹¤ë¿ô¤Î
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.Fn munlock
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¸Æ¤Ó½Ð¤·¤¬É¬ÍפǤ¹¡£
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¤Ä¤Þ¤ê
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.Fn mlock
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¤Î¥Í¥¹¥È¤Ç¤¹¡£
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¤³¤ì¤Ï¼ÂÁõ¾å¤Î·ë²Ì¤Ç¤¢¤Ã¤Æ»ÅÍͤǤϤʤ¤¤È¹Í¤¨¤ëɬÍפ¬¤¢¤ê¤Þ¤¹¡£
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.Pp
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¥×¥í¥»¥¹¤´¤È¤Î¥ê¥½¡¼¥¹¤Î¸Â³¦¤Ï¥í¥Ã¥¯¤µ¤ì¤¿²¾ÁÛ¥á¥â¥ê¤ÎÎ̤ؤÎÀ©¸Â¤Ç¡¢
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¥·¥¹¥Æ¥àÁ´ÂΤ˶¦Ä̤ÎÀ©¸Â¤Ï¥í¥Ã¥¯¤µ¤ì¤¿ÊªÍý¥Ú¡¼¥¸¤Î¿ô¤Ë¤Ä¤¤¤Æ¤Î¤â¤Î¤Ç¤¹¡£
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¤³¤Î¤è¤¦¤Ë¡¢2 ¤Ä¤ÎÊÌ¡¹¤Î¥Þ¥Ã¥Ô¥ó¥°¤«¤éƱ¤¸ÊªÍý¥Ú¡¼¥¸¤ò
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¥í¥Ã¥¯¤¹¤ë¤È¥×¥í¥»¥¹¤´¤È¤ÎÀ©¸Â¤ËÂФ·¤Æ¤Ï 2 ¥Ú¡¼¥¸¤È¤·¤Æ¥«¥¦¥ó¥È¤µ¤ì¡¢
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¥·¥¹¥Æ¥àÀ©¸Â¤Ç¤Ï 1 ¥Ú¡¼¥¸¤À¤±¤È¤·¤Æ¥«¥¦¥ó¥È¤µ¤ì¤Þ¤¹¡£
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.Pp
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¥×¥í¥»¥¹¤´¤È¤Î¥ê¥½¡¼¥¹À©¸Â¤Ï¸½»þÅÀ¤Ç¤Ï¥µ¥Ý¡¼¥È¤µ¤ì¤Æ¤¤¤Þ¤»¤ó¡£
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.Sh Îò»Ë
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.Fn mlock
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´Ø¿ô¤È
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.Fn munlock
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´Ø¿ô¤Ï
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.Bx 4.4
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¤Ç¤Ï¤¸¤á¤ÆÅо줷¤Þ¤·¤¿¡£
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