锘??xml version="1.0" encoding="utf-8" standalone="yes"?>久久久久久国产精品美女,99久久精品免费看国产一区二区三区,91精品国产综合久久香蕉http://www.shnenglu.com/aa19870406/zh-cnTue, 06 May 2025 23:21:14 GMTTue, 06 May 2025 23:21:14 GMT60- 鍏充簬寰俊鍜孮Q鐨勪竴鐐規濊?/title>http://www.shnenglu.com/aa19870406/archive/2012/08/28/188540.htmlMrRightLeftMrRightLeftTue, 28 Aug 2012 10:24:00 GMThttp://www.shnenglu.com/aa19870406/archive/2012/08/28/188540.htmlhttp://www.shnenglu.com/aa19870406/comments/188540.htmlhttp://www.shnenglu.com/aa19870406/archive/2012/08/28/188540.html#Feedback8http://www.shnenglu.com/aa19870406/comments/commentRss/188540.htmlhttp://www.shnenglu.com/aa19870406/services/trackbacks/188540.html寰俊瑕佹墦璐q錛屽鏋滀粎浠呭眬闄愪簬闄岀敓浜轟氦鍙嬶紝鏄偗瀹氫笉琛岀殑銆傛墍浠ョ幇鍦ㄥ井淇′細鍏奸【闄岀敓浜轟氦鍙嬪拰鐔熶漢浜ゅ弸銆傚洜涓洪檶鐢熶漢浜ゅ弸鐨勬ā寮忔槸璋冨姩澶у鐚庡銆佸皾璇曟柊椴滅殑嬈叉湜錛屽鏋滃ぇ瀹墮兘鎯沖幓“綰︾偖”錛屼絾鏄張緇忓父綰︿笉鍒幫紝灝變細娓愭笎澶卞幓瀵瑰畠鐨勫ソ濂囧拰鏂伴矞鍒烘縺鎰燂紝閭d箞寰俊鐨勫彂灞曞氨浼氶亣鍒扮摱棰堛俼q鏈澶х殑浼樺娍鍦ㄤ簬瀹冪殑鐢ㄦ埛鍏崇郴閾撅紝鐢ㄦ埛鍏崇郴閾炬槸寮鴻仈緋葷殑錛岀敤鎴峰緢闅句粠瀹冭漿鍒板埆澶勶紝褰撶劧鐜板湪寰俊鐨勫揩閫熷彂灞曚篃鏄涓嶅紑qq鐨勬敮鎸佺殑錛屾瘮濡備粠qq瀵煎叆濂藉弸鍒板井淇°傛墍浠q琚井淇″彇浠g殑鍙兘鎬ц繕涓嶆槸寰堝ぇ錛屽簲璇ユ槸浜掕ˉ鐨勶紝涓ゅ己騫剁珛銆傚井淇$殑鐏茍涓嶄竴瀹氬湪浜庡畠鐨勫姛鑳藉己澶э紝鎴栬呭垱鏂幫紙濡傛憞涓鎽囥佹紓嫻佺摱錛夛紝鐏殑鏈川鍘熷洜鍦ㄤ簬鐢ㄦ埛鐨?#8220;綰︾偖”闇姹傦紝榪欎篃鏄檶闄岃兘寮傚啗紿佽搗鐨勫師鍥狅紝鑰岀浉姣斾箣涓嬶紝綾寵亰灝卞悗鍔蹭笉瓚籌紝鍥犱負瀹冩病鏈夋姄浣忚繖涓湰璐ㄩ渶姹傘?/p>
鐢變簬涓寮濮嬪ぇ閮ㄥ垎浜虹殑鐨?#8220;綰︾偖”闇姹傛棤娉曞緱鍒版弧瓚籌紝緇ц屽浜庨檶鐢熶漢浜ゅ弸宸ュ叿鐨勪嬌鐢ㄤ細鐢卞師鏉ョ殑鍘熷“綰︾偖”闇姹傦紝榪涘寲涓?#8220;緇撹瘑鏂版湅鍙?#8221;鐨勯渶姹傦紝鐜頒唬澶ч儴鍒嗕漢閮借姳璐瑰ぇ閲忔椂闂村湪浜掕仈緗戜笂錛屼笌浜烘帴瑙︾殑鏃墮棿浼氭瘮杈冨皯錛屽墿鐢峰墿濂熾佸畢鐢峰畢濂沖緢澶氾紝榪欓儴鍒嗛渶姹備細姣旇緝澶э紝涔熸瘮杈冧笉閭d箞鍘熷銆傜浉淇′笉涔呭悗浼氭槸榪欓儴鍒嗛渶姹傛潵涓誨闄岀敓浜轟氦鍙嬪伐鍏風殑鍙戝睍銆?/p> 
]]> - redis婧愮爜鍓栨瀽-main嫻佺▼http://www.shnenglu.com/aa19870406/archive/2012/07/17/183875.htmlMrRightLeftMrRightLeftTue, 17 Jul 2012 05:28:00 GMThttp://www.shnenglu.com/aa19870406/archive/2012/07/17/183875.htmlhttp://www.shnenglu.com/aa19870406/comments/183875.htmlhttp://www.shnenglu.com/aa19870406/archive/2012/07/17/183875.html#Feedback0http://www.shnenglu.com/aa19870406/comments/commentRss/183875.htmlhttp://www.shnenglu.com/aa19870406/services/trackbacks/183875.html涓銆乺edis榪愯嫻佺▼
浠ヤ笅鏄痳edis main鍑芥暟鐨勮繍琛屾祦紼?br />

]]> - socket accept()榪斿洖鐨剆ocket鎻忚堪絎︾殑绔彛鍜宭isten鎻忚堪絎︾鍙f槸涓鏍風殑鍚楋紵http://www.shnenglu.com/aa19870406/archive/2012/07/15/183595.htmlMrRightLeftMrRightLeftSun, 15 Jul 2012 13:01:00 GMThttp://www.shnenglu.com/aa19870406/archive/2012/07/15/183595.htmlhttp://www.shnenglu.com/aa19870406/comments/183595.htmlhttp://www.shnenglu.com/aa19870406/archive/2012/07/15/183595.html#Feedback2http://www.shnenglu.com/aa19870406/comments/commentRss/183595.htmlhttp://www.shnenglu.com/aa19870406/services/trackbacks/183595.html
]]> - 鍚屾io涓庡紓姝ohttp://www.shnenglu.com/aa19870406/archive/2012/07/13/183189.htmlMrRightLeftMrRightLeftFri, 13 Jul 2012 07:45:00 GMThttp://www.shnenglu.com/aa19870406/archive/2012/07/13/183189.htmlhttp://www.shnenglu.com/aa19870406/comments/183189.htmlhttp://www.shnenglu.com/aa19870406/archive/2012/07/13/183189.html#Feedback0http://www.shnenglu.com/aa19870406/comments/commentRss/183189.htmlhttp://www.shnenglu.com/aa19870406/services/trackbacks/183189.html闃誨io妯″瀷銆侀潪闃誨io妯″瀷銆両/O澶嶇敤妯″瀷鍜屼俊鍙烽┍鍔↖/O妯″瀷閮芥槸鍚屾io妯″瀷錛屽洜涓哄叾涓湡姝g殑io鎿嶄綔灝嗛樆濉炶繘紼嬨傚彧鏈夊紓姝/O妯″瀷鎵嶆槸寮傛鐨?img src ="http://www.shnenglu.com/aa19870406/aggbug/183189.html" width = "1" height = "1" />
]]> - socket close_on_exechttp://www.shnenglu.com/aa19870406/archive/2012/07/13/183183.htmlMrRightLeftMrRightLeftFri, 13 Jul 2012 07:08:00 GMThttp://www.shnenglu.com/aa19870406/archive/2012/07/13/183183.htmlhttp://www.shnenglu.com/aa19870406/comments/183183.htmlhttp://www.shnenglu.com/aa19870406/archive/2012/07/13/183183.html#Feedback0http://www.shnenglu.com/aa19870406/comments/commentRss/183183.htmlhttp://www.shnenglu.com/aa19870406/services/trackbacks/183183.htmlsocket close_on_exec
鐖惰繘紼媐ork瀛愯繘紼嬪悗錛屽瓙榪涚▼浼氬鍒剁埗榪涚▼鐨剆ocket鎻忚堪絎︺傚鏋滄兂璁╁瓙榪涚▼鍦╡xec鏃訛紝閲婃斁鎺夋墍鎷ユ湁鐨勭埗榪涚▼鐨剆ocket鎻忚堪絎︼紝鍙互璁劇疆鐖惰繘紼嬬殑socket close_on_exec鐗規с?br /> if( fcntl(iSockFd, F_GETFD, arg) < 0 ) /* 榪欎釜寰堥噸瑕侊紝瑕佷笉涓嬮潰璁劇疆涓嶆垚鍔?nbsp;*/
{
exit(-1);
}
arg |= FD_CLOEXEC;
if( fcntl(iSockFd, F_SETFD, 1) < 0 )
{
exit(-1);
}

]]> - SO_REUSEADDRhttp://www.shnenglu.com/aa19870406/archive/2012/07/12/183018.htmlMrRightLeftMrRightLeftThu, 12 Jul 2012 09:16:00 GMThttp://www.shnenglu.com/aa19870406/archive/2012/07/12/183018.htmlhttp://www.shnenglu.com/aa19870406/comments/183018.htmlhttp://www.shnenglu.com/aa19870406/archive/2012/07/12/183018.html#Feedback0http://www.shnenglu.com/aa19870406/comments/commentRss/183018.htmlhttp://www.shnenglu.com/aa19870406/services/trackbacks/183018.htmlSO_REUSEADDR
緙栧啓 TCP/SOCK_STREAM 鏈嶅姟紼嬪簭鏃訛紝SO_REUSEADDR鍒板簳浠涔堟剰鎬濓紵榪欎釜濂楁帴瀛楅夐」閫氱煡鍐呮牳錛屽鏋滅鍙e繖錛屼絾TCP鐘舵佷綅浜?TIME_WAIT 錛屽彲浠ラ噸鐢ㄧ鍙c傚鏋滅鍙e繖錛岃孴CP鐘舵佷綅浜庡叾浠栫姸鎬侊紝閲嶇敤绔彛鏃朵緷鏃у緱鍒頒竴涓敊璇俊鎭紝 鎸囨槑"鍦板潃宸茬粡浣跨敤涓?銆傚鏋滀綘鐨勬湇鍔$▼搴忓仠姝㈠悗鎯崇珛鍗抽噸鍚紝鑰屾柊濂楁帴瀛椾緷鏃т嬌鐢ㄥ悓涓绔彛錛屾鏃禨O_REUSEADDR 閫夐」闈炲父鏈夌敤銆傚繀欏繪剰璇嗗埌錛屾鏃朵換浣曢潪鏈熸湜鏁版嵁鍒拌揪錛岄兘鍙兘瀵艱嚧鏈嶅姟紼嬪簭鍙嶅簲娣蜂貢錛屼笉榪囪繖鍙槸涓縐嶅彲鑳斤紝浜嬪疄涓婂緢涓嶅彲鑳姐?nbsp;
]]> - linux 鏂囦歡鎿嶄綔涔媍losehttp://www.shnenglu.com/aa19870406/archive/2012/07/12/183010.htmlMrRightLeftMrRightLeftThu, 12 Jul 2012 08:13:00 GMThttp://www.shnenglu.com/aa19870406/archive/2012/07/12/183010.htmlhttp://www.shnenglu.com/aa19870406/comments/183010.htmlhttp://www.shnenglu.com/aa19870406/archive/2012/07/12/183010.html#Feedback0http://www.shnenglu.com/aa19870406/comments/commentRss/183010.htmlhttp://www.shnenglu.com/aa19870406/services/trackbacks/183010.html
#include <iostream>
#include <fcntl.h>
using namespace std;

int main()


{
int fd = open("demo.txt", O_RDWR, 0);
close(fd);
int fd1 = open("demo1.txt", O_RDWR, 0);
char *szMsg = "hello";
int size = write(fd, szMsg, strlen(szMsg)+1);
if (-1 == size)

{
cerr << "error!" << endl;
}
close(fd1);
return 0;
}鐚滀竴涓嬩笂闈㈢▼搴忕殑鎵ц緇撴灉銆?br />鍦╳rite鏃訛紝fd鍜宖d1鐨勫兼槸涓鏍風殑錛寃rite fd鏃訛紝瀹為檯灝辨槸write fd1銆?br />涓轟簡閬垮厤鑷繁鍦ㄧ▼搴忎腑璇搷浣滐紝鍙互鍦╟lose(fd)涔嬪悗錛屽姞涓奻d = -1; 
]]> - redis婧愮爜鍓栨瀽-瀛楃涓?/title>http://www.shnenglu.com/aa19870406/archive/2012/07/03/181190.htmlMrRightLeftMrRightLeftMon, 02 Jul 2012 16:59:00 GMThttp://www.shnenglu.com/aa19870406/archive/2012/07/03/181190.htmlhttp://www.shnenglu.com/aa19870406/comments/181190.htmlhttp://www.shnenglu.com/aa19870406/archive/2012/07/03/181190.html#Feedback0http://www.shnenglu.com/aa19870406/comments/commentRss/181190.htmlhttp://www.shnenglu.com/aa19870406/services/trackbacks/181190.htmlredis婧愮爜鍓栨瀽-瀛楃涓?br />
redis瀹炵幇浜嗚嚜宸辯殑瀛楃涓茬粨鏋勩傚湪鏂囦歡sds.h/dsd.c涓畾涔夈俽edis涓殑瀛楃涓插彨sds(simple dynamic string)銆?br />sds瀹炶川鏄痗har*:
typedef char *sds;
sds閫氳繃sdsnewlen()鍑芥暟鏉ュ垱寤?sds sdsnewlen(const void *init, size_t initlen)銆傝鍑芥暟鍐呴儴浼氬垱寤轟竴涓猻dshdr鐨勭粨鏋?榪斿洖鍊約ds錛屽嵆char *錛岃緇撴瀯瀹氫箟濡備笅:
struct sdshdr
{
int len;
int free;
char buf[];
};
鍏朵腑len瀛樺偍褰撳墠瀛楃涓茬殑闀垮害錛宖ree瀛樺偍璇ョ粨鏋勪綋鍓╀綑鍙瓨鍌ㄥ瓧鑺傛暟錛宐uf瀛樺偍瀛楃涓插箋俿dsnewlen()鍑芥暟鍦ㄥ垱寤簊dshdr鍚庯紝浼氳繑鍥瀊uf鐨勫湴鍧錛坰dshdr->buf)銆?br />sdsnewlen()鍑芥暟鍒涘緩浜嗗瓧絎︿覆錛屽茍榪斿洖瀛楃涓插湴鍧sds,瑕佷嬌鐢╯dshdr涓殑len鍜宖ree錛屽垯闇瑕佽幏鍙杝dshdr緇撴瀯浣撶殑鍦板潃銆傚浣曟牴鎹幏寰楃殑sds寰楀埌sdshdr緇撴瀯浣撶殑鍦板潃鍛紵
redis涓弬鑰冧簡linux鍐呮牳鍏充簬閫氱敤list(list_head)鐨勫疄鐜版満鍒?瀹炵幇鏂規硶濡備笅:
struct sdshdr *sh = (void*) (sds-(sizeof(struct sdshdr)));
sds鏄繑鍥炵殑瀛楃涓插湴鍧錛屽嵆sdshdr->buf錛岀敤sds鐨勫湴鍧鍑忓幓鍏跺湪緇撴瀯浣撲腑鐨勫亸縐伙紝鍗沖彲寰楀埌sdshdr鐨勫湴鍧銆傜敱浜巄uf鍦╯dshdr緇撴瀯浣撶殑鏈鍚庯紝鎵浠ュ叾鍋忕Щ灝辨槸sizeof(len)+sizeof(free),璇ュ亸縐繪伆濂芥槸sizeof(struct sdshdr)銆?br />濡傛灉buf鍦╯dshdr涓殑浣嶇疆鏄換鎰忕殑錛屽浣曟牴鎹産uf鐨勫湴鍧鑾峰彇sdshdr鐨勫湴鍧鍛紵瀹炵幇濡備笅:
鍋囪鐜板湪sdshdr澹版槑濡備笅:
struct sdshdr
{
int len;
char buf[];
int free;
};
鍒檚dshdr鍦板潃濡備笅鑾峰彇錛?br />int offset_buf = (int)((struct sdshdr *)0)->buf;
struct sdshdr *sh =(struct sdshdr *)( (int)sdsbuf - offset_buf);
鍏朵腑sdsbuf鏄皟鐢╯dsnewlen()榪斿洖鐨刡uf鍦板潃銆傚嵆 sds sdsbuf = sdsnewlen(...);
((struct sdshdr *)0)->buf 琛ㄧず褰撶粨鏋勪綋sdshdr鍦ㄥ湴鍧0鏃訛紝buf鐩稿浜巗dshdr棣栧湴鍧鐨勫亸縐匯?/span>

]]> - 64浣嶇綉緇滃瓧鑺傚簭涓庝富鏈哄瓧鑺傚簭杞崲http://www.shnenglu.com/aa19870406/archive/2012/06/20/179517.htmlMrRightLeftMrRightLeftWed, 20 Jun 2012 08:50:00 GMThttp://www.shnenglu.com/aa19870406/archive/2012/06/20/179517.htmlhttp://www.shnenglu.com/aa19870406/comments/179517.htmlhttp://www.shnenglu.com/aa19870406/archive/2012/06/20/179517.html#Feedback1http://www.shnenglu.com/aa19870406/comments/commentRss/179517.htmlhttp://www.shnenglu.com/aa19870406/services/trackbacks/179517.html 64浣嶇綉緇滃瓧鑺傚簭涓庝富鏈哄瓧鑺傚簭杞崲
unsigned long long ntohll(unsigned long long val)


{
if (__BYTE_ORDER == __LITTLE_ENDIAN)

{
return (((unsigned long long )htonl((int)((val << 32) >> 32))) << 32) | (unsigned int)htonl((int)(val >> 32));
}
else if (__BYTE_ORDER == __BIG_ENDIAN)

{
return val;
}
}

unsigned long long htonll(unsigned long long val)


{
if (__BYTE_ORDER == __LITTLE_ENDIAN)

{
return (((unsigned long long )htonl((int)((val << 32) >> 32))) << 32) | (unsigned int)htonl((int)(val >> 32));
}
else if (__BYTE_ORDER == __BIG_ENDIAN)

{
return val;
}
}


]]>- 濡備綍瀹氫箟鍙橀暱鐨凾LV緇撴瀯浣擄紵http://www.shnenglu.com/aa19870406/archive/2012/06/14/178803.htmlMrRightLeftMrRightLeftThu, 14 Jun 2012 07:46:00 GMThttp://www.shnenglu.com/aa19870406/archive/2012/06/14/178803.htmlhttp://www.shnenglu.com/aa19870406/comments/178803.htmlhttp://www.shnenglu.com/aa19870406/archive/2012/06/14/178803.html#Feedback4http://www.shnenglu.com/aa19870406/comments/commentRss/178803.htmlhttp://www.shnenglu.com/aa19870406/services/trackbacks/178803.html濡備綍瀹氫箟鍙橀暱鐨凾LV緇撴瀯浣擄紵
TLV鏄竴縐嶅父鐢ㄧ殑鐢ㄤ簬閫氫俊鐨勭粨鏋勪綋鏍煎紡銆俆琛ㄧずtag錛孡琛ㄧずlength錛孷琛ㄧずvalue銆傚叾涓璗鍜孡鏄浐瀹氬ぇ灝忕殑錛孷鏄彲鍙樺ぇ灝忥紝L琛ㄧず鐨勬槸V鐨勯暱搴︺傞氬父鐢ㄤ簬緇撴瀯鍖栫綉緇滈氫俊涓殑鏁版嵁嫻併傚0x3 3 'aa\0'錛?x3 5 'aaaa\0',鍏朵腑0x3琛ㄧずtag鐨勫鹼紝3 or 5琛ㄧず鐨勬槸鍚庨潰鐨勫瓧絎︿覆鐨勯暱搴︺傜敱浜嶸鏄彲鍙橀暱搴︾殑錛屾墍浠ュ湪瀹氫箟TLV緇撴瀯鏃訛紝闇瑕佸皢V瀹氫箟鎴愪負鍙彉澶у皬銆傚彲瀹氫箟濡備笅錛?br />struct TLV
{
uint8_t tag;
uint16_t len;
char value[0];
}__attribute__((packed));
娉ㄦ剰value鍒嗛厤鐨勬槸0澶у皬錛屾渶鍚庝竴涓垚鍛樹負鍙彉闀跨殑鏁扮粍錛屽浜嶵LV錛圱ype-Length-Value錛夊艦寮忕殑緇撴瀯錛屾垨鑰呭叾浠栭渶瑕佸彉闀垮害鐨勭粨鏋勪綋錛岀敤榪欑鏂瑰紡瀹氫箟鏈濂姐備嬌鐢ㄨ搗鏉ラ潪甯告柟渚匡紝鍒涘緩鏃訛紝malloc涓孌電粨鏋勪綋澶у皬鍔犱笂鍙彉闀挎暟鎹暱搴︾殑絀洪棿緇欏畠錛屽彲鍙橀暱閮ㄥ垎鍙寜鏁扮粍鐨勬柟寮忚闂紝閲婃斁鏃訛紝鐩存帴鎶婃暣涓粨鏋勪綋free鎺夊氨鍙互浜嗐俖_attribute__(packed)鐢ㄦ潵寮哄埗涓嶅struct TLV榪涜4瀛楄妭瀵歸綈錛岀洰鐨勬槸涓轟簡鑾峰彇鐪熷疄鐨凾LV鐨勭┖闂翠嬌鐢ㄦ儏鍐點?br />int main()
{
char *szMsg = "aaaaaaaaa";
cout << sizeof(TLV) << endl; //the size of TLV
uint16_t len = strlen(szMsg) + 1;
struct TLV *pTLV;
pTLV = (struct TLV*)malloc(sizeof(struct TLV) + sizeof(char)*len);
pTLV->tag = 0x2;
pTLV->len = len;
memcpy(pTLV->value, szMsg, len);
cout << pTLV->value << endl;
free(pTLV);
pTLV = NULL;
return 0;
}
榪欓噷鏈夊叧浜庤緗彉闀縏LV鐨勮緇嗚鏄庯細http://www.douban.com/note/213324857/
榪欓噷鏈変竴涓棶棰橈紝濡備綍瀹炵幇宓屽TLV緇撴瀯鍛紵澶у鏈変粈涔堝ソ鐨勬濊礬鍚楋紵嬈㈣繋浜ゆ祦
綆鍗曞疄鐜頒簡涓涓嬪祵濂桾LV錛屼笉鐭ラ亾鏈夋病鏈夐棶棰樸?br />#include <iostream>
using namespace std;
struct TLVNODE
{
uint8_t tag;
uint16_t len;
char value[0];
}__attribute__ ((packed));
struct TLV
{
int hei;
uint8_t tag;
uint16_t len;
struct TLVNODE value[0];
} __attribute__ ((packed));
int main()
{
//char *szMsg = "aaaaaaaaaaa";
cout << sizeof(TLV) << endl;
//uint16_t len = strlen(szMsg) + 1;
char *szNodeMsg = "bbbbbbbbbb";
uint16_t nodelen = strlen(szNodeMsg) + 1;
struct TLVNODE *pNode = (struct TLVNODE *) malloc(sizeof(struct TLVNODE) + sizeof(char)*nodelen);
pNode->tag = 0x3;
pNode->len = nodelen;
memcpy(pNode->value, szNodeMsg, nodelen);
struct TLV *pTlv;
uint16_t nodeSize = sizeof(struct TLVNODE) + sizeof(char)*nodelen;
pTlv = (struct TLV*)malloc(sizeof(struct TLV) + nodeSize);
pTlv->tag = 0x2;
pTlv->len = nodeSize;
// pTlv->value[0] = (struct TLVNODE)*pNode;
memcpy(pTlv->value, pNode, nodeSize);
free(pNode);
pNode = NULL;
cout << sizeof(*pTlv) << endl;
/*for (int i = 0; i < len; ++i)
{
pTlv->value[i] = szMsg[i];
}*/
/*memcpy(pTlv->value, szMsg, len);*/
//cout << pTlv->value << endl;
free(pTlv);
pTlv = NULL;
return 0;
}

]]>
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