¶ÑÕ»¡¢linux c³ÌÐò´æ´¢¿Õ¼ä²¼¾ÖµÄ×ܽá
Õ»Ö÷ÒªÓÃÀ´´æ·Å¾Ö²¿±äÁ¿, ´«µÝ²ÎÊý, ´æ·Åº¯ÊýµÄ·µ»ØµØÖ·.esp ʼÖÕÖ¸ÏòÕ»¶¥, Õ»ÖеÄÊý¾ÝÔ½¶à, espµÄֵԽС.
¶ÑÓÃÓÚ´æ·Å¶¯Ì¬·ÖÅäµÄ¶ÔÏó, µ±ÄãʹÓà malloc , new µÈ½øÐзÖÅäʱ,ËùµÃµ½µÄ¿Õ¼ä¾ÍÔÚ¶ÑÖÐ. ¶¯Ì¬·ÖÅäµÃµ½µÄÄڴ渽´øÓзÖÅäÐÅÏ¢, ËùÒÔÄãÄܹ» realloc ºÍ freeµ÷ËüÃÇ.
È«¾Ö£¬¾²Ì¬ºÍ³£Á¿ÊÇ·ÖÅäÔÚÊý¾ÝÇøÖеġ£Êý¾ÝÇø°üÀ¨bssºÍ³õʼ»¯Çø¡£
¶ÑÏò¸ßÄÚ´æµØÖ·Éú³¤
Õ»ÏòµÍÄÚ´æµØÖ·Éú³¤
¶ÑºÍÕ»ÏàÏò¶øÉú£¬¶ÑºÍÕ»Ö®¼äÓиöÁÙ½çµã£¬³ÆÎªstkbrk
CODE:
½ø³ÌÔÚÄÚ´æÖеÄÓ°Ïñ.
ÎÒÃǼÙÉèÏÖÔÚÓÐÒ»¸ö³ÌÐò, ËüµÄº¯Êýµ÷ÓÃ˳ÐòÈçÏÂ.
main(...) ->; func_1(...) ->; func_2(...) ->; func_3(...)
¼´: Ö÷º¯Êýmainµ÷Óú¯Êýfunc_1; º¯Êýfunc_1µ÷Óú¯Êýfunc_2; º¯Êýfunc_2µ÷Óú¯Êýfunc_3
µ±³ÌÐò±»²Ù×÷ϵͳµ÷ÈëÄÚ´æÔËÐÐ, ÆäÏà¶ÔÓ¦µÄ½ø³ÌÔÚÄÚ´æÖеÄÓ°ÏñÈçÏÂͼËùʾ.
(ÄÚ´æ¸ßÖ·)
+--------------------------------------+
| ...... | ... Ê¡ÂÔÁËһЩÎÒÃDz»ÐèÒª¹ØÐĵÄÇø
+--------------------------------------+
| env strings (»·¾³±äÁ¿×Ö´®) | \
+--------------------------------------+ \
| argv strings (ÃüÁîÐÐ×Ö´®) | \
+--------------------------------------+ \
| env pointers (»·¾³±äÁ¿Ö¸Õë) | SHELLµÄ»·¾³±äÁ¿ºÍÃüÁîÐвÎÊý±£
Ïà¹ØÎĵµ£º
³É¹¦ÊµÏÖLinuxÏÂpppdͨ¹ýGPRS²¦ºÅÉÏÍø
×ò
Ìì°Ñ¿ª·¢°åµÄbootloaderɾÁË,û°ì·¨,Ö»µÃÔÚPCÉϵ÷GPRS²¦ºÅÁË.ÏÈÔÚwindowsϲ¦ºÅ³É¹¦,È»ºóÓù¤¾ß¿´²¦ºÅʱ¾ßÌåʹÓÃÁËÄÄЩATÃü
Áî,ÔÙʹÓÃÕâЩÃüÁîµ½linuxÏÂʹÓÃpppdÀ´²¦ºÅ,×îºóÖÕÓڳɹ¦ÁË,֮ǰ¿ª·¢°åÉϲ»Äܳɹ¦²¦ºÅ¼«ÓпɾÍÊÇATÖ¸ÁîÓÐÎ ......
Gentoo Linux ALSAÖ¸ÄÏ
1.
¼ò½é
ʲôÊÇALSA?
ALSAÊÇAdvanced Linux Sound Architecture£¬¸ß¼¶LinuxÉùÒô¼Ü¹¹
µÄ¼ò³Æ,ËüÔÚLinux²Ù×÷ϵͳÉÏÌṩÁËÒôƵºÍMIDI£¨Musical Instrument Digital Interface
£¬ÒôÀÖÉ豸Êý×Ö»¯½Ó¿Ú£©µÄÖ§³Ö¡£ÔÚ2.6ϵÁÐÄÚºËÖУ¬ALSAÒѾ³ÉΪĬÈϵÄÉùÒô×Óϵͳ£¬ÓÃÀ´Ìæ»»2.4ϵÁÐ ......
Linux¸ùÎļþϵͳ½á¹¹ÔÙÈÏʶ
Áõ½¨ÎÄ£¨http://blog.csdn.net/keminlau £©
INTRO
¾¡¹ÜLinuxµÄ¸ùÎļþϵͳÔÚÐÎʽ±íÏÖÉÏÊÇÒ»ÌåµÄ£¨ËùÓÐÊý¾ÝĿ¼¾ùΪ¸ùĿ¼ÏµÄ×ÓĿ¼£©£¬µ«Êµ¼ÊËüÃÇÊǶà¸ö²»Í¬µÄ¡¾Âß¼Ö÷Ìå¡¿£¨ÎªÁËʵÏÖ²»Í¬µÄÂß¼¹¦ÄÜ£©×éºÏÔÚÒ»ÆðµÄ£¬²Î¼ûÏÂͼ¡£ÕâÒ²½âÊÍÁËΪʲôÓÐЩ½Úµã£¨Èç/var£©¿ÉÒÔ¹Ò½Óµ½²»Í¬´ÅÅÌ·ÖÇøÉÏ¡£ ......
ÅäÖÃÎļþÒ»ÀÀ±í ÎļþλÖü°Ãû³Æ,×÷ÓÃ
¡¡¡¡/etc/rc.d/rc.sysinit
¡¡¡¡ÏµÍ³Æô¶¯Ê±µÄ¹«Ó÷þÎñÅäÖÃ
¡¡¡¡/etc/rc.d/rc.local
¡¡¡¡ÏµÍ³Æô¶¯Ê±µÄ±¾µØ·þÎñÅäÖÃ
¡¡¡¡/etc/bashrc¡¢/etc/profile
¡¡¡¡bash shellµÄ¹«ÓÃÅäÖÃ
¡¡¡¡/home/username/.bashrc
¡¡¡¡¸÷Óû§Ë½ÈËbash shellÅäÖÃ
¡¡¡¡/etc/securetty
¡¡¡¡Öն˰²È«ÉèÖÃ
......