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MREMAP
Section: Linux Programmer's Manual (2)Updated: 1996-04-12
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mremap - ²¾ÁÛ¥á¥â¥ê¡¦¥¢¥É¥ì¥¹¤òºÆ¥Þ¥Ã¥×¤¹¤ë½ñ¼°
#include <unistd.h>#include <sys/mman.h>
void * mremap(void * old_address, size_t old_size , size_t new_size, unsigned long flags);
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- EINVAL
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- EFAULT
- ¡Ö¥»¥°¥á¥ó¥Æ¡¼¥·¥ç¥ó°ãÈ¿(segmentation fault)¡×¡¢ old_address ¤«¤é old_address+old_size ¤Î ÈϰϤΥ¢¥É¥ì¥¹¤Î¤É¤ì¤«¤¬¤³¤Î¥×¥í¥»¥¹¤Ë¤ª¤¤¤ÆÉÔÀµ¤Ê²¾ÁÛ¥á¥â ¥ê¡¦¥¢¥É¥ì¥¹¤Ç¤¢¤ë¡£Î㤨Í׵ᤷ¤¿¥¢¥É¥ì¥¹¶õ´ÖÁ´ÂΤΥޥåפ¬ ¸ºß¤·¤¿¤È¤·¤Æ¤â¡¢¤½¤ì¤é¤Î¥Þ¥Ã¥×¤¬°Û¤Ã¤¿·¿¤Ê¤é¤Ð EFAULT ¤ò ¼õ¤±¼è¤ë¤À¤í¤¦¡£
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- ENOMEM
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¤³¤Î¥³¡¼¥ë¤Ï Linux ÆÃͤǤ¢¤ê¡¢°Ü¿¢¤ò°Õ¿Þ¤·¤¿¥×¥í¥°¥é¥à¤Ç»ÈÍѤ·¤Æ¤Ï ¤¤¤±¤Ê¤¤¡£4.2BSD ¤Ï (¼ÂºÝ¤Ë¼ÂÁõ¤µ¤ì¤Æ¤¤¤¿¤ï¤±¤Ç¤Ï¤Ê¤¤¤¬) Á´¤¯°Û¤Ã¤¿Êý¼°(semantics)¤Ë¤è¤ë mremap(2) ¥³¡¼¥ë¤ò»ý¤Ã¤Æ¤¤¤ë¡£´ØÏ¢¹àÌÜ
getpagesize(2), realloc(3), malloc(3), brk(2), sbrk(2), mmap(2) ¥Ú¡¼¥¸Ê¬³ä¤µ¤ì¤¿¥á¥â¥ê¤Ë´Ø¤·¤Æ¤Î¤è¤ê¾Ü¤·¤¤ÀâÌÀ¤Ï ¤¢¤Ê¤¿¤Î¹¥¤ß¤Î OS ¤Î¶µ²Ê½ñ¤ò»²¾È¤¹¤ë¤³¤È (Modern Operating Systems by Andrew S. Tannenbaum, Inside Linux by Randolf Bentson, The Design of the UNIX Operating System by Maurice J. Bach.)