Linux½ø³Ì¼äͨѶ֮¹²ÏíÄÚ´æ
¹²ÏíÄÚ´æ:
ʹÓù²ÏíÄÚ´æºÍʹÓÃmalloc()À´·ÖÅäÄÚ´æÇøÓòºÜÏàËÆ¡£Ê¹Óù²ÏíÄÚ´æµÄ·½·¨ÊÇ£º
1 ¶ÔÒ»¸ö½ø³Ì/Ïß³ÌʹÓÃshmget()·ÖÅäÄÚ´æÇøÓò¡£
2 ʹÓÃshmat()·ÅÖÃÒ»¸ö»ò¶à¸ö½ø³Ì/Ïß³ÌÔÚ¹²ÏíÄÚ´æÖУ¬Ò²¿ÉÒÔÓÃshmctl()À´»ñÈ¡ÐÅÏ¢»òÕß¿ØÖƹ²ÏíÇøÓò¡£
3 ʹÓÃshmdt()´Ó¹²ÏíÇøÓòÖзÖÀë¡£
4 ʹÓÃshmctl()½â³ý·ÖÅä¿Õ¼ä
¹²ÏíÄÚ´æÊÇLinuxÖÐ×î¿ìËÙµÄIPC·½·¨¡£ËüÒ²ÊÇÒ»¸öË«Ïò¹ý³Ì£¬¹²ÏíÇøÓòÄÚµÄÈκνø³Ì¶¼¿ÉÒÔ¶ÁдÄÚ´æ¡£Õâ¸ö»úÖÆµÄ²»Àû·½ÃæÊÇÆäͬ²½ºÍÐÒé¶¼²»ÊܳÌÐòÔ±¿ØÖÆ£¬±ØÐëÈ·±£½«¾ä±ú´«µÝ¸øÁË×Ó½ø³ÌºÍÏ̡߳£
Ò». º¯Êý£º shmget½éÉÜ
¹¦ÄÜ:È¡µÃ¹²ÏíÄÚ´æ¶Î
Óï·¨:#include <sys/types.h>;
#include <sys/ipc.h>;
#include <sys/shm.h>;
int shmget(key,size,shmflg)
key_t key;
int size,shmflg;
˵Ã÷:±¾ÏµÍ³µ÷Ó÷µ»ØkeyÏà¹ØµÄ¹²ÏíÄÚ´æ±êʶ·û.
¹²ÏíÄÚ´æ±êʶ·ûºÍÏà¹ØÊý¾Ý½á¹¹¼°ÖÁÉÙsize×ֽڵĹ²ÏíÄÚ´æ¶ÎÄÜ
Õý³£´´½¨,ÒªÇóÒÔÏÂÊÂʵ³ÉÁ¢:
. ²ÎÊýkeyµÈÓÚIPC_PRIVATE.
. ²ÎÊýkeyûÓÐÏà¹ØµÄ¹²ÏíÄÚ´æ±êʶ·û,ͬʱ(shmflg&IPC_CREAT)
ÖµÎªÕæ.
¹²ÏíÄÚ´æ´´½¨Ê±,ÐÂÉú³ÉµÄ¹²ÏíÄÚ´æ±êʶÏà¹ØµÄÊý¾Ý½á¹¹±»³õʼ
Ïà¹ØÎĵµ£º
Õ⼸ÌìLinux·þÎñÆ÷ºÜÂý,ºÜ׿±ÕÒ²»µ½½â¾ö°ì·¨!ºó°Ù¶ÈÏà¹Ø×ÖÑÛ,²éÕÒµ½ÊÇMySQLµÄÎÊÌâ,
ÈçÏÂΪ½â¾ö·½°¸
:
Á¬½ÓMySQLËÙ¶ÈÂýµÄ½â¾ö·½·¨.
PHPÔ¶³ÌÁ¬½ÓMYSQLËÙ¶ÈÂý,ÓÐʱԶ³ÌÁ¬½Óµ½MYSQLÓÃʱ4-20Ãë²»µÈ,±¾µØÁ¬½ÓMYSQLÕý³£,³öÏÖÕâÖÖÎÊÌâµÄÖ÷ÒªÔÒòÊÇ,ĬÈϰ²×°µÄ
MYSQL¿ªÆôÁËDNSµÄ·´Ïò½âÎö,ÔÚMY.CNF(UNIX»òLINUXϵͳÏÂ)»òMY.INI ......
×÷ΪLinuxϵijÌÐò¿ª·¢ÈËÔ±£¬´ó¼ÒÒ»¶¨¶¼Óöµ½¹ýMakefile£¬ÓÃmakeÃüÁîÀ´±àÒë×Ô¼ºÐ´µÄ³ÌÐòȷʵÊǺܷ½±ã¡£Ò»°ãÇé¿öÏ£¬´ó¼Ò¶¼ÊÇÊÖ¹¤Ð´Ò»¸ö¼òµ¥Makefile£¬Èç¹ûÒªÏëд³öÒ»¸ö·ûºÏ×ÔÓÉÈí¼þ¹ßÀýµÄMakefile¾Í²»ÄÇôÈÝÒ×ÁË¡£
¡¡¡¡ÔÚ±¾ÎÄÖУ¬½«¸ø´ó¼Ò½éÉÜÈçºÎʹÓÃautoconfºÍautomakeÁ½¸ö¹¤¾ßÀ´°ïÖúÎÒÃÇ×Ô¶¯µØÉú³É·ûºÏ×ÔÓÉÈí¼þ¹ßÀýµÄMa ......
Linux, named after the inventor, Linus Torvalds, is a so different OS for everyone against Windows. To everyone who used to use Windows, Linux need us to do more for everything which we usually do by computer, such as playing a video.
Someone says, Linux is for the ones who are good at the computer ......
È·ÇеÄ˵,ÎÒÊÇ´Ó»ªÇåÔ¶¼ûµÄ¹ÙÍøÉϵÃÖªÓиö½ÐǶÈëʽlinux¾ÍÒµÅàѵ°àµÄ¶«Î÷²Å¶ÔlinuxÓÐЩÈÏʶµÄ,¼ÓÖ®×Ô¼ººÍµ¥Æ¬»ú´òÁË2¸ö¶àÔµĽ»µÀÖ®ºó,Ò²²»ÖªÔõôµØ,ÇÞÊҵö¼Ò»ï·¢·èËÆµÄ¿ªÊ¼ÍæFPGA,SOPC,MATLABÖ®ÀàµÄ¶«Î÷,ÎÒ×ÔÈ»²»Ó¦¸ÃÏÐ×Å,»¨ÁËÒ»¶Îʱ¼äÁ˽âDSP,¾õµÃÒªÏÈѧºÃÊý×ÖÐźŴ¦Àí,ÂýÂýÓнӴ¥ARM,È»ºó¶ÔS3C2410µÄ¿ª·¢°åºÜÓÐÐËȤ, ......
¹ÜµÀ¼°ÓÐÃû¹ÜµÀ
ÔÚ±¾ÏµÁÐÐòÖÐ×÷Õ߸ÅÊöÁË linux ½ø³Ì¼äͨÐŵļ¸ÖÖÖ÷ÒªÊֶΡ£ÆäÖйܵÀºÍÓÐÃû¹ÜµÀÊÇ×îÔçµÄ½ø³Ì¼äͨÐÅ»úÖÆÖ®Ò»£¬¹ÜµÀ¿ÉÓÃÓÚ¾ßÓÐÇ×Ôµ¹ØÏµ½ø³Ì¼äµÄͨÐÅ£¬ÓÐÃû¹ÜµÀ¿Ë·þÁ˹ܵÀûÓÐÃû×ÖµÄÏÞÖÆ£¬Òò´Ë£¬³ý¾ßÓйܵÀËù¾ßÓеŦÄÜÍ⣬Ëü»¹ÔÊÐíÎÞÇ×Ôµ¹ØÏµ½ø³Ì¼äµÄͨÐÅ¡£ ÈÏÇå¹ÜµÀºÍÓÐÃû¹ÜµÀµÄ¶Áд¹æÔòÊÇÔÚ³ÌÐòÖÐÓ¦Ó ......