linux 2.6Ô´´úÂëÇé¾°·ÖÎö±Ê¼ÇÖ®½ø³Ì6
ÿ¸ö½ø³Ì¶¼ÓÐÒ»×éÏà¹ØµÄ×ÊÔ´ÏÞÖÆ£¨resource limit£©£¬ÏÞÖÆÁËÖ¸¶¨½ø³ÌÄÜʹÓõÄϵͳ×ÊÔ´ÊýÁ¿¡£
¶Ôµ±Ç°½ø³ÌµÄ×ÊÔ´ÏÞÖÆ´æ·ÅÔÚcurrent->signal->rlim×ֶΣ¬½ø³ÌµÄÐźÅÃèÊö·ûµÄÒ»¸ö×ֶΡ£¸Ã×Ö¶ÎÀàÐÍΪrlimit½á¹¹µÄÊý×飬ÿ¸ö×ÊÔ´ÏÞÖÆ¶ÔÓ¦Ò»¸öÔªËØ¡£
struct rlimit {
unsigned long rlim_cur;
unsigned long rlim_max;
};
ÆäÖÐrlim_cur×Ö¶ÎÊÇ×ÊÔ´µÄµ±Ç°×ÊÔ´ÏÞÖÆ£¨current->signal->rlim[RLIMIT_CPU]£©¡£rlim_cur±íʾÕýÔËÐнø³ÌËùÕ¼ÓÃcpuʱ¼äµÄµ±Ç°ÏÞÖÆ
rlim_max×Ö¶ÎÊÇ×ÊÔ´ÏÞÖÆËùÔÊÐíµÄ×î´óÖµ¡£ÀûÓÃgetrlimit()ºÍsetrlimit()ϵͳµ÷Óã¬Óû§×ÜÄܰÑһЩ×ÊÔ´µÄrlim_curÏÞÖÆÔö¼Óµ½rlim_max¡£Ö»Óг¬¼¶Óû§£¨¾ßÓÐCAP_SYS_RESOURCEȨÄܵÄÓû§£©²ÅÄܸıärlim_max×ֶΣ¬»ò°Ñrlim_cur×Ö¶ÎÉèÖóɴóÓÚÏàÓ¦rlim_max×ֶεÄÒ»¸öÖµ¡£
´ó¶àÊý×ÊÔ´ÏÞÖÆ°üº¬ÊýÖµRLIM_INFINITY(0xffffffff),ËüÒâζ×ÅûÓжÔÏàÓ¦µÄ×ÊÔ´Ê©¼ÓÓû§ÏÞÖÆ¡£
#ifndef __ARCH_RLIMIT_ORDER
#define RLIMIT_CPU 0 /* CPU time in ms */½ø³ÌʹÓÃcpu×ʱ¼ä£¨Ã룩¡£½ø³Ì³¬¹ýÁËÕâ¸öÏÞÖÆ£¬Äں˾͸øËü·¢ËÍÒ»¸öSIGXCPUÐźţ¬È»ºóÈç¹û½ø³Ì»¹²»ÖÕÖ¹£¬ÔÙ·¢Ò»¸öSIGKLLÐźš£
#define RLIMIT_FSIZE 1 /* Maximum filesize */Îļþ´óСµÄ×î´óÊýÖµ£¨×Ö½Ú£©¡£Èç¹û½ø³ÌÊÔͼ°ÑÒ»¸öÎļþµÄ´óСÀ©³äµ½´óÓÚÕâ¸öÖµ£¬Äں˾͸øÕâ¸ö½ø³Ì·¢SIGXFSZÐźš£
#define RLIMIT_DATA 2 /* max data size */¶Ñ´óСµÄ×î´óÊýÖµ£¨×Ö½Ú£©¡£ÔÚÀ©³ä½ø³ÌµÄ¶Ñ֮ǰ£¬Äں˼ì²éÕâ¸öÊýÖµ¡£
#define RLIMIT_STACK 3 /* max stack size */Õ»´óСµÄ×î´óÊý£¨×Ö½Ú£©¡£ÄÚºËÔÚÀ©³ä½ø³ÌµÄÓû§Ì¬¶Ñջ֮ǰ¼ì²éÕâ¸öÊýÖµ¡£
#define RLIMIT_CORE 4 /* m
Ïà¹ØÎĵµ£º
ÀýÒ»£º·¢ËÍSignaling Packet£º
Signaling CommandÊÇ2¸öBluetoothʵÌåÖ®¼äµÄL2CAP²ãÃüÁî´«Êä¡£ËùÒÔµÃSignaling CommandʹÓÃCID 0x0001.
¶à¸öCommand¿ÉÒÔÔÚÒ»¸öC-frame£¨control frame£©Öз¢ËÍ¡£
Èç¹ûÒªÖ±½Ó·¢ËÍSignaling Command.ÐèÒª½¨Á¢SOCK_RAWÀàÐ͵ÄL2CAPÁ¬½ÓSocket¡£ÕâÑù²ÅÓлú»á×Ô¼ºÌî³äCommand Code£¬Identi ......
¡¡¡¡ÔÚLinuxÕóÓªÀºóÆðÖ®ÐãUbuntu Linuxµ±ÊôÆäÖеÄٮٮÕß¡£ÔÚUbuntu LinuxÖÐȱʡ°²×°µÄÓ¦ÓóÌÐòÖ÷Òª°üÀ¨ÁË×ÀÃæ»·¾³GNOME¡¢»æÍ¼³ÌÐòGIMP¡¢¼´Ê±Í¨Ñ¶¹¤¾ßPidgin¡¢°ì¹«Ì×¼þOpenOffice.org¡¢Ã½Ìå²¥·ÅÆ÷Totem¡¢ÒôÀÖ²¥·ÅÆ÷RhythmboxÒÔ¼°ÍøÒ³ä¯ÀÀÆ÷FirefoxµÈ¡£ÒªÖ´ÐÐÊÓÆµ±à¼¡¢BTÏÂÔØºÍ3DͼÐÎÉè¼ÆµÈÈÎÎñÍùÍùÐèÒª½èÖúÓÚµÚÈý·½Èí¼ ......
1¡¢Ïȱ¸·ÝºÃ:
¡¡¡¡sudo cp /etc/X11/xorg.conf /etc/X11/xorg.conf.backup
¡¡¡¡2¡¢´ò¿ªxorg.conf:
¡¡¡¡sudo gedit /etc/X11/xorg.conf
¡¡¡¡3¡¢ÇëÕÒµ½ÒÔÏÂÒ»¶ÎÔÚÕâ¸Ä£º
¡¡¡¡Section "Monitor"
¡¡¡¡Identifier "Generic Monitor"
¡¡¡¡Option "DPMS"
¡¡¡¡HorizSync 28-70
¡¡¡¡VertRefr ......
#apt-get install gcc (±àÒëÆ÷)
#apt-get install gdb (µ÷ÊÔ)
#apt-get install libc6-dev (¿ª·¢¿â)
Èç¹ûûÓпª·¢¿â£¬gccµÄʱºò¾Í»á´íÎó
gcc h.c
h.c: In function ‘main’:
h.c:1: warning: incompatible implicit declaration of built-in function ‘prin ......
ÔÚunix/linuxÏ£¬¾³£ÓÐÒòΪ¹²ÏíÄÚ´æ¡¢ÐźÅÁ¿£¬¶ÓÁеȹ²ÏíÐÅϢûÓиɾ»µØÇå³þ¶øÒýÆðһЩÎÊÌâ¡£
²é¿´¹²ÏíÐÅÏ¢µÄÄÚ´æµÄÃüÁîÊÇipcs [-m|-s|-q]¡£
ĬÈÏ»áÁгö¹²ÏíÄÚ´æ¡¢ÐźÅÁ¿£¬¶ÓÁÐÐÅÏ¢£¬-mÁгö¹²ÏíÄڴ棬-sÁгö¹²ÏíÐźÅÁ¿£¬-qÁгö¹²Ïí¶ÓÁС£
ÔõÑùÇå³þÄØ£¿
Çå³þÃüÁîÊÇipcrm [-m|-s|-q] id¡£
-m ɾ³ý¹²ÏíÄڴ棬-sɾ³ý¹²ÏíÐ ......