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褰撶▼搴忔枃浠惰繍琛屼負榪涚▼鐨勬椂鍊欙紝榪涚▼鍦ㄥ唴瀛樹腑寰楀埌絀洪棿(榪涚▼鑷繁鐨勫皬鎴塊棿)銆傛瘡涓繘紼嬬┖闂存寜鐓у涓嬫柟寮忓垎涓轟笉鍚屽尯鍩?

                    鍐呭瓨絀洪棿

Text鍖哄煙鐢ㄦ潵鍌ㄥ瓨鎸囦護(instruction)錛屾潵鍛婅瘔紼嬪簭姣忎竴姝ョ殑鎿嶄綔銆侴lobal Data鐢ㄤ簬瀛樻斁鍏ㄥ眬鍙橀噺錛宻tack鐢ㄤ簬瀛樻斁灞閮ㄥ彉閲忥紝heap鐢ㄤ簬瀛樻斁鍔ㄦ佸彉閲?(dynamic variable. 紼嬪簭鍒╃敤malloc緋葷粺璋冪敤錛岀洿鎺ヤ粠鍐呭瓨涓負dynamic variable寮杈熺┖闂?銆?span style="margin: 0px; padding: 0px; color: #ff0000;">Text鍜?span style="margin: 0px; padding: 0px; color: #ff0000;">Global data鍦ㄨ繘紼嬩竴寮濮嬬殑鏃跺欏氨紜畾浜嗭紝騫跺湪鏁翠釜榪涚▼涓繚鎸?span style="margin: 0px; padding: 0px; color: #ff0000;">鍥哄畾澶у皬銆?/span>

 

Stack(鏍?span style="margin: 0px; padding: 0px; color: #000000;">)浠?span style="margin: 0px; padding: 0px; color: #ff0000;">stack frame涓哄崟浣嶃傚綋紼嬪簭璋冪敤鍑芥暟鐨勬椂鍊欙紝姣斿main()鍑芥暟涓皟鐢╥nner()鍑芥暟錛宻tack浼氬悜涓嬪闀夸竴涓猻tack frame銆係tack frame涓瓨鍌ㄨ鍑芥暟鐨?span style="margin: 0px; padding: 0px; color: #ff0000;">鍙傛暟鍜?span style="margin: 0px; padding: 0px; color: #ff0000;">灞閮ㄥ彉閲?/span>錛屼互鍙婅鍑芥暟鐨?span style="margin: 0px; padding: 0px; color: #ff0000;">榪斿洖鍦板潃(return address)銆傛鏃訛紝璁$畻鏈哄皢鎺у埗鏉冧粠main()杞Щ鍒癷nner()錛宨nner()鍑芥暟澶勪簬嬋媧?/span>(active)鐘舵併備綅浜嶴tack鏈涓嬫柟鐨刦rame鍜孏lobal Data灝辨瀯鎴愪簡褰撳墠鐨勭幆澧?context)銆傛縺媧誨嚱鏁板彲浠ヤ粠涓皟鐢ㄩ渶瑕佺殑鍙橀噺銆傚吀鍨嬬殑緙栫▼璇█閮藉彧鍏佽浣犱嬌鐢ㄤ綅浜巗tack鏈涓嬫柟鐨刦rame 錛岃屼笉鍏佽浣犺皟鐢ㄥ叾瀹冪殑frame (榪欎篃絎﹀悎stack緇撴瀯“鍏堣繘鍚庡嚭”鐨勭壒寰併備絾涔熸湁涓浜涜璦鍏佽浣犺皟鐢╯tack鐨勫叾瀹冮儴鍒嗭紝鐩稿綋浜庡厑璁鎬綘鍦ㄨ繍琛宨nner()鍑芥暟鐨勬椂鍊欒皟鐢╩ain()涓0鏄庣殑灞閮ㄥ彉閲忥紝姣斿Pascal)銆傚綋鍑芥暟鍙堣繘涓姝ヨ皟鐢ㄥ彟涓涓嚱鏁扮殑鏃跺欙紝涓涓柊鐨刦rame浼氱戶緇鍔犲埌stack涓嬫柟錛屾帶鍒舵潈杞Щ鍒版柊鐨勫嚱鏁頒腑銆傚綋嬋媧誨嚱鏁?span style="margin: 0px; padding: 0px; color: #ff0000;">榪斿洖鐨勬椂鍊欙紝浼氫粠stack涓?span style="margin: 0px; padding: 0px; color: #ff0000;">寮瑰嚭(pop錛屽氨鏄鍙栧茍鍒犻櫎)璇rame錛屽茍鏍規嵁frame涓褰曠殑榪斿洖鍦板潃錛屽皢鎺у埗鏉冧氦緇欒繑鍥炲湴鍧鎵鎸囧悜鐨勬寚浠?/span>(姣斿浠巌nner()鍑芥暟涓繑鍥烇紝緇х畫鎵цmain()涓祴鍊肩粰main2鐨勬搷浣?銆?/span>

涓嬪浘鏄痵tack鍦ㄨ繍琛岃繃紼嬩腑鐨勫彉鍖栵紝綆ご琛ㄧずstack澧為暱鐨勬柟鍚戯紝姣忎釜鏂瑰潡浠h〃涓涓猻tack frame銆傚紑濮嬬殑鏃跺欐垜浠湁涓涓負main()鏈嶅姟鐨刦rame錛岄殢鐫璋冪敤inner()錛屾垜浠負inner()澧炲姞涓涓猣rame銆傚湪inner()榪斿洖鏃訛紝鎴戜滑鍐嶆鍙湁main()鐨刦rame錛岀洿鍒版渶鍚巑ain()榪斿洖錛屽叾榪斿洖鍦板潃涓虹┖錛屾墍浠ヨ繘紼嬬粨鏉熴?br />


                                                          stack鍙樺寲


鍦ㄨ繘紼嬭繍琛岀殑榪囩▼涓紝閫氳繃璋冪敤鍜岃繑鍥炲嚱鏁幫紝鎺у埗鏉?/span>涓嶆柇鍦ㄥ嚱鏁伴棿杞Щ銆傝繘紼嬪彲浠ュ湪璋冪敤鍑芥暟鐨勬椂鍊欙紝鍘熷嚱鏁扮殑stack frame涓繚瀛樻湁鍦ㄦ垜浠寮鏃剁殑鐘舵侊紝騫朵負鏂扮殑鍑芥暟寮杈熸墍闇鐨剆tack frame絀洪棿銆傚湪璋冪敤鍑芥暟榪斿洖鏃訛紝璇ュ嚱鏁扮殑stack frame鎵鍗犳嵁鐨勭┖闂撮殢鐫stack frame鐨勫脊鍑鴻屾竻絀恒傝繘紼嬪啀嬈″洖鍒板師鍑芥暟鐨剆tack frame涓繚瀛樼殑鐘舵侊紝騫舵牴鎹繑鍥炲湴鍧鎵鎸囧悜鐨勬寚浠ょ戶緇墽琛屻備笂闈㈣繃紼嬩笉鏂戶緇紝stack涓嶆柇澧為暱鎴栧噺灝忥紝鐩村埌main()榪斿洖鐨勬椂鍊欙紝stack瀹屽叏娓呯┖錛岃繘紼嬬粨鏉熴?/span>

 

 褰撶▼搴忎腑浣跨敤malloc鐨勬椂鍊欙紝heap(鍫?span style="margin: 0px; padding: 0px; color: #000000;">)浼?/span>鍚戜笂澧為暱錛屽叾澧為暱鐨勯儴鍒嗗氨鎴愪負malloc浠庡唴瀛樹腑鍒嗛厤鐨勭┖闂淬俶alloc寮杈熺殑絀洪棿浼氫竴鐩村瓨鍦紝鐩村埌鎴戜滑鐢╢ree緋葷粺璋冪敤鏉ラ噴鏀撅紝鎴栬呰繘紼嬬粨鏉熴備竴涓粡鍏哥殑閿欒鏄?span style="margin: 0px; padding: 0px; color: #ff0000;">鍐呭瓨娉勬紡(memory leakage), 灝辨槸鎸囨垜浠病鏈夐噴鏀句笉鍐嶄嬌鐢ㄧ殑heap絀洪棿錛屽鑷磆eap涓嶆柇澧為暱錛岃屽唴瀛樺彲鐢ㄧ┖闂翠笉鏂噺灝戙?/span>

鐢變簬stack鍜宧eap鐨勫ぇ灝忓垯浼氶殢鐫榪涚▼鐨勮繍琛屽澶ф垨鑰呭彉灝忥紝褰搒tack鍜宧eap澧為暱鍒頒袱鑰呯浉閬囨椂鍊欙紝涔熷氨鏄唴瀛樼┖闂村浘涓殑钃濊壊鍖哄煙(unused area)瀹屽叏娑堝け鐨勬椂鍊欙紝榪涚▼浼氬嚭鐜?span style="margin: 0px; padding: 0px; color: #ff0000;">鏍堟孩鍑?/span>(stack overflow)鐨勯敊璇紝瀵艱嚧榪涚▼緇堟銆傚湪鐜頒唬璁$畻鏈轟腑錛屽唴鏍鎬竴鑸兘浼氫負榪涚▼鍒嗛厤瓚沖澶氱殑钃濊壊鍖哄煙錛屽鏋滄垜浠嵆鏃舵竻鐞嗙殑璇濓紝stack overflow鏄彲浠ラ伩鍏嶇殑銆備絾鏄紝鍦ㄨ繘琛屼竴浜涚煩闃佃繍綆楃殑鏃跺欙紝鐢變簬鎵闇鐨勫唴瀛樺緢澶э紝渚濈劧鍙兘鍑虹幇stack overflow鐨勬儏鍐點備竴縐嶈В鍐蟲柟寮忔槸澧炲ぇ鍐呮牳鍒嗛厤緇欐瘡涓繘紼嬬殑鍐呭瓨絀洪棿銆傚鏋滀緷鐒朵笉鑳借В鍐抽棶棰樼殑璇濓紝鎴戜滑灝遍渶瑕佸鍔犵墿鐞嗗唴瀛樸?br />


鍫嗗拰鏍堢殑鍖哄埆錛?br />

2.1鐢寵鏂瑰紡    
  stack:    
  鐢辯郴緇熻嚜鍔ㄥ垎閰嶃?nbsp;  渚嬪錛屽0鏄庡湪鍑芥暟涓竴涓眬閮ㄥ彉閲?nbsp;  int   b;   緋葷粺鑷姩鍦ㄦ爤涓負b寮杈熺┖  
  闂?nbsp;   
  heap:    
  闇瑕佺▼搴忓憳鑷繁鐢寵錛屽茍鎸囨槑澶у皬錛屽湪c涓璵alloc鍑芥暟    
  濡俻1   =   (char   *)malloc(10);    
  鍦–++涓敤new榪愮畻絎?nbsp;   
  濡俻2   =   new   char[10];    
  浣嗘槸娉ㄦ剰p1銆乸2鏈韓鏄湪鏍堜腑鐨勩?nbsp;   
   
   
  2.2    
  鐢寵鍚庣郴緇熺殑鍝嶅簲    
  鏍堬細鍙鏍堢殑鍓╀綑絀洪棿澶т簬鎵鐢寵絀洪棿錛岀郴緇熷皢涓虹▼搴忔彁渚涘唴瀛橈紝鍚﹀垯灝嗘姤寮傚父鎻愮ず鏍堟孩  
  鍑恒?nbsp;   
  鍫嗭細棣栧厛搴旇鐭ラ亾鎿嶄綔緋葷粺鏈変竴涓褰曠┖闂插唴瀛樺湴鍧鐨勯摼琛紝褰撶郴緇熸敹鍒扮▼搴忕殑鐢寵鏃訛紝  
  浼氶亶鍘嗚閾捐〃錛屽鎵劇涓涓┖闂村ぇ浜庢墍鐢寵絀洪棿鐨勫爢緇撶偣錛岀劧鍚庡皢璇ョ粨鐐逛粠絀洪棽緇撶偣閾捐〃  
  涓垹闄わ紝騫跺皢璇ョ粨鐐圭殑絀洪棿鍒嗛厤緇欑▼搴忥紝鍙﹀錛屽浜庡ぇ澶氭暟緋葷粺錛屼細鍦ㄨ繖鍧楀唴瀛樼┖闂翠腑鐨?nbsp; 
  棣栧湴鍧澶勮褰曟湰嬈″垎閰嶇殑澶у皬錛岃繖鏍鳳紝浠g爜涓殑delete璇彞鎵嶈兘姝g‘鐨勯噴鏀炬湰鍐呭瓨絀洪棿銆?nbsp; 
  鍙﹀錛岀敱浜庢壘鍒扮殑鍫嗙粨鐐圭殑澶у皬涓嶄竴瀹氭濂界瓑浜庣敵璇風殑澶у皬錛岀郴緇熶細鑷姩鐨勫皢澶氫綑鐨勯偅閮?nbsp; 
  鍒嗛噸鏂版斁鍏ョ┖闂查摼琛ㄤ腑銆?nbsp;   
   
  2.3鐢寵澶у皬鐨勯檺鍒?nbsp;   
  鏍堬細鍦╓indows涓?鏍堟槸鍚戜綆鍦板潃鎵╁睍鐨勬暟鎹粨鏋勶紝鏄竴鍧楄繛緇殑鍐呭瓨鐨勫尯鍩熴傝繖鍙ヨ瘽鐨勬剰  
  鎬濇槸鏍堥《鐨勫湴鍧鍜屾爤鐨勬渶澶у閲忔槸緋葷粺棰勫厛瑙勫畾濂界殑錛屽湪WINDOWS涓嬶紝鏍堢殑澶у皬鏄?M錛堜篃鏈?nbsp; 
  鐨勮鏄?M錛屾諱箣鏄竴涓紪璇戞椂灝辯‘瀹氱殑甯告暟錛夛紝濡傛灉鐢寵鐨勭┖闂磋秴榪囨爤鐨勫墿浣欑┖闂存椂錛屽皢  
  鎻愮ずoverflow銆傚洜姝わ紝鑳戒粠鏍堣幏寰楃殑絀洪棿杈冨皬銆?nbsp;   
  鍫嗭細鍫嗘槸鍚戦珮鍦板潃鎵╁睍鐨勬暟鎹粨鏋勶紝鏄笉榪炵畫鐨勫唴瀛樺尯鍩熴傝繖鏄敱浜庣郴緇熸槸鐢ㄩ摼琛ㄦ潵瀛樺偍  
  鐨勭┖闂插唴瀛樺湴鍧鐨勶紝鑷劧鏄笉榪炵畫鐨勶紝鑰岄摼琛ㄧ殑閬嶅巻鏂瑰悜鏄敱浣庡湴鍧鍚戦珮鍦板潃銆傚爢鐨勫ぇ灝?nbsp; 
  鍙楅檺浜庤綆楁満緋葷粺涓湁鏁堢殑铏氭嫙鍐呭瓨銆傜敱姝ゅ彲瑙侊紝鍫嗚幏寰楃殑絀洪棿姣旇緝鐏墊椿錛屼篃姣旇緝澶с?nbsp;   
   
   
   
  2.4鐢寵鏁堢巼鐨勬瘮杈冿細    
  鏍堢敱緋葷粺鑷姩鍒嗛厤錛岄熷害杈冨揩銆備絾紼嬪簭鍛樻槸鏃犳硶鎺у埗鐨勩?nbsp;   
  鍫嗘槸鐢眓ew鍒嗛厤鐨勫唴瀛橈紝涓鑸熷害姣旇緝鎱紝鑰屼笖瀹規槗浜х敓鍐呭瓨紕庣墖,涓嶈繃鐢ㄨ搗鏉ユ渶鏂逛究.    
  鍙﹀錛屽湪WINDOWS涓嬶紝鏈濂界殑鏂瑰紡鏄敤VirtualAlloc鍒嗛厤鍐呭瓨錛屼粬涓嶆槸鍦ㄥ爢錛屼篃涓嶆槸鍦ㄦ爤鏄?nbsp; 
  鐩存帴鍦ㄨ繘紼嬬殑鍦板潃絀洪棿涓繚鐣欎竴鍧楀唴瀛橈紝铏界劧鐢ㄨ搗鏉ユ渶涓嶆柟渚褲備絾鏄熷害蹇紝涔熸渶鐏墊椿銆?nbsp; 
     
   
  2.5鍫嗗拰鏍堜腑鐨勫瓨鍌ㄥ唴瀹?nbsp;   
  鏍堬細   鍦ㄥ嚱鏁拌皟鐢ㄦ椂錛岀涓涓繘鏍堢殑鏄富鍑芥暟涓悗鐨勪笅涓鏉℃寚浠わ紙鍑芥暟璋冪敤璇彞鐨勪笅涓鏉″彲  
  鎵ц璇彞錛夌殑鍦板潃錛岀劧鍚庢槸鍑芥暟鐨勫悇涓弬鏁幫紝鍦ㄥぇ澶氭暟鐨凜緙栬瘧鍣ㄤ腑錛屽弬鏁版槸鐢卞彸寰宸﹀叆鏍?nbsp; 
  鐨勶紝鐒跺悗鏄嚱鏁頒腑鐨勫眬閮ㄥ彉閲忋傛敞鎰忛潤鎬佸彉閲忔槸涓嶅叆鏍堢殑銆?nbsp;   
  褰撴湰嬈″嚱鏁拌皟鐢ㄧ粨鏉熷悗錛屽眬閮ㄥ彉閲忓厛鍑烘爤錛岀劧鍚庢槸鍙傛暟錛屾渶鍚庢爤欏舵寚閽堟寚鍚戞渶寮濮嬪瓨鐨勫湴  
  鍧錛屼篃灝辨槸涓誨嚱鏁頒腑鐨勪笅涓鏉℃寚浠わ紝紼嬪簭鐢辮鐐圭戶緇繍琛屻?nbsp;   
  鍫嗭細涓鑸槸鍦ㄥ爢鐨勫ご閮ㄧ敤涓涓瓧鑺傚瓨鏀懼爢鐨勫ぇ灝忋傚爢涓殑鍏蜂綋鍐呭鐢辯▼搴忓憳瀹夋帓銆?nbsp;   
   
  2.6瀛樺彇鏁堢巼鐨勬瘮杈?nbsp;   
   
  char   s1[]   =   "aaaaaaaaaaaaaaa";    
  char   *s2   =   "bbbbbbbbbbbbbbbbb";    
  aaaaaaaaaaa鏄湪榪愯鏃跺埢璧嬪肩殑錛?nbsp;   
  鑰宐bbbbbbbbbb鏄湪緙栬瘧鏃跺氨紜畾鐨勶紱    
  浣嗘槸錛屽湪浠ュ悗鐨勫瓨鍙栦腑錛屽湪鏍堜笂鐨勬暟緇勬瘮鎸囬拡鎵鎸囧悜鐨勫瓧絎︿覆(渚嬪鍫?蹇?  

  2.7灝忕粨錛?nbsp;   
  鍫嗗拰鏍堢殑鍖哄埆鍙互鐢ㄥ涓嬬殑姣斿柣鏉ョ湅鍑猴細    
  浣跨敤鏍堝氨璞℃垜浠幓楗閲屽悆楗紝鍙鐐硅彍錛堝彂鍑虹敵璇鳳級銆佷粯閽便佸拰鍚冿紙浣跨敤錛夛紝鍚冮ケ浜嗗氨  
  璧幫紝涓嶅繀鐞嗕細鍒囪彍銆佹礂鑿滅瓑鍑嗗宸ヤ綔鍜屾礂紕椼佸埛閿呯瓑鎵熬宸ヤ綔錛屼粬鐨勫ソ澶勬槸蹇嵎錛屼絾鏄嚜  
  鐢卞害灝忋?nbsp;   
  浣跨敤鍫嗗氨璞℃槸鑷繁鍔ㄦ墜鍋氬枩嬈㈠悆鐨勮彍鑲達紝姣旇緝楹葷儲錛屼絾鏄瘮杈冪鍚堣嚜宸辯殑鍙e懗錛岃屼笖鑷敱  
  搴﹀ぇ銆?nbsp;  (緇忓吀錛?  


hoshelly 2013-09-27 09:13 鍙戣〃璇勮
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Java瀵硅薄寮曠敤錛堣漿錛?/title><link>http://www.shnenglu.com/zhenglinbo/archive/2013/09/27/203450.html</link><dc:creator>hoshelly</dc:creator><author>hoshelly</author><pubDate>Fri, 27 Sep 2013 00:39:00 GMT</pubDate><guid>http://www.shnenglu.com/zhenglinbo/archive/2013/09/27/203450.html</guid><wfw:comment>http://www.shnenglu.com/zhenglinbo/comments/203450.html</wfw:comment><comments>http://www.shnenglu.com/zhenglinbo/archive/2013/09/27/203450.html#Feedback</comments><slash:comments>0</slash:comments><wfw:commentRss>http://www.shnenglu.com/zhenglinbo/comments/commentRss/203450.html</wfw:commentRss><trackback:ping>http://www.shnenglu.com/zhenglinbo/services/trackbacks/203450.html</trackback:ping><description><![CDATA[<div><span style="font-size: 12px;">浣滆咃細Vamei 鍑哄錛歨ttp://www.cnblogs.com/vamei 嬈㈣繋杞澆錛屼篃璇蜂繚鐣欒繖孌靛0鏄庛傝阿璋紒</span></div><div><span style="font-size: 12px;"><br /></span></div><div> </div><div><span style="font-size: 12px;"><br /></span></div><div><span style="font-size: 12px;">鎴戜滑涔嬪墠涓鐩村湪浣跨敤“瀵硅薄”榪欎釜姒傚康錛屼絾娌℃湁鎺㈣瀵硅薄鍦ㄥ唴瀛樹腑鐨勫叿浣撳瓨鍌ㄦ柟寮忋傝繖鏂歸潰鐨勮璁哄皢寮曞嚭“瀵硅薄寮曠敤”(object reference)榪欎竴閲嶈姒傚康銆?nbsp;</span></div><div><span style="font-size: 12px;"><br /></span></div><div> </div><div><span style="font-size: 12px;"><br /></span></div><div><span style="font-size: 12px;">瀵硅薄寮曠敤</span></div><div><span style="font-size: 12px;">鎴戜滑娌跨敤涔嬪墠瀹氫箟鐨凥uman綾伙紝騫舵湁涓涓猅est綾?</span></div><div><span style="font-size: 12px;"><br /></span></div><div><span style="font-size: 12px;">澶嶅埗浠g爜</span></div><div><span style="font-size: 12px;">public class Test</span></div><div><span style="font-size: 12px;">{</span></div><div><span style="font-size: 12px;">    public static void main(String[] args)</span></div><div><span style="font-size: 12px;">    {</span></div><div><span style="font-size: 12px;">        Human aPerson = new Human(160);                 </span></div><div><span style="font-size: 12px;">    }</span></div><div><span style="font-size: 12px;">}</span></div><div><span style="font-size: 12px;"><br /></span></div><div><span style="font-size: 12px;">class Human</span></div><div><span style="font-size: 12px;">{   </span></div><div><span style="font-size: 12px;">    /**</span></div><div><span style="font-size: 12px;">     * constructor</span></div><div><span style="font-size: 12px;">     */</span></div><div><span style="font-size: 12px;">    public Human(int h)</span></div><div><span style="font-size: 12px;">    {</span></div><div><span style="font-size: 12px;">        this.height = h;</span></div><div><span style="font-size: 12px;">    }</span></div><div><span style="font-size: 12px;"><br /></span></div><div><span style="font-size: 12px;">    /**</span></div><div><span style="font-size: 12px;">     * accessor</span></div><div><span style="font-size: 12px;">     */</span></div><div><span style="font-size: 12px;">    public int getHeight()</span></div><div><span style="font-size: 12px;">    {</span></div><div><span style="font-size: 12px;">       return this.height;</span></div><div><span style="font-size: 12px;">    }</span></div><div><span style="font-size: 12px;"><br /></span></div><div><span style="font-size: 12px;">    /**</span></div><div><span style="font-size: 12px;">     * mutator</span></div><div><span style="font-size: 12px;">     */</span></div><div><span style="font-size: 12px;">    public void growHeight(int h)</span></div><div><span style="font-size: 12px;">    {</span></div><div><span style="font-size: 12px;">        this.height = this.height + h;</span></div><div><span style="font-size: 12px;">    }</span></div><div><span style="font-size: 12px;"><br /></span></div><div><span style="font-size: 12px;">    private int height;</span></div><div><span style="font-size: 12px;">}</span></div><div><span style="font-size: 12px;">澶嶅埗浠g爜</span></div><div> </div><div><span style="font-size: 12px;"><br /></span></div><div><span style="font-size: 12px;">澶栭儴鍙互璋冪敤綾繪潵鍒涘緩瀵硅薄錛屾瘮濡備笂闈㈠湪Test綾諱腑:</span></div><div><span style="font-size: 12px;"><br /></span></div><div><span style="font-size: 12px;">Human aPerson = new Human(160);</span></div><div><span style="font-size: 12px;">鍒涘緩浜嗕竴涓狧uman綾葷殑瀵硅薄aPerson銆?nbsp;</span></div><div><span style="font-size: 12px;"><br /></span></div><div><span style="font-size: 12px;">涓婇潰鏄竴涓潪甯哥畝鍗曠殑琛ㄨ堪錛屼絾鎴戜滑鏈夎澶氱粏鑺傞渶瑕佹繁鍏?</span></div><div><span style="font-size: 12px;"><br /></span></div><div><span style="font-size: 12px;">棣栧厛鐪嬬瓑鍙風殑鍙充晶銆俷ew鏄湪鍐呭瓨涓負瀵硅薄寮杈熺┖闂淬傚叿浣撴潵璇達紝new鏄湪鍐呭瓨鐨勫爢(heap)涓婁負瀵硅薄寮杈熺┖闂淬傝繖涓絀洪棿涓紝淇濆瓨鏈夊璞$殑鏁版嵁鍜屾柟娉曘?/span></div><div><span style="font-size: 12px;">鍐嶇湅絳夊彿鐨勫乏渚с俛Person鎸囦唬涓涓狧uman瀵硅薄錛岃縐頒負瀵硅薄寮曠敤(reference)銆傚疄闄呬笂錛宎Person騫朵笉鏄璞℃湰韜紝鑰屾槸綾諱技浜庝竴涓寚鍚戝璞$殑鎸囬拡銆俛Person瀛樺湪浜庡唴瀛樼殑鏍?stack)涓?/span></div><div><span style="font-size: 12px;">褰撴垜浠敤絳夊彿璧嬪兼椂錛屾槸灝嗗彸渚ew鍦ㄥ爢涓垱寤哄璞$殑鍦板潃璧嬩簣緇欏璞″紩鐢ㄣ?/span></div><div><span style="font-size: 12px;">榪欓噷鐨勫唴瀛橈紝鎸囩殑鏄疛VM (Java Virtual Machine)铏氭嫙鍑烘潵鐨凧ava榪涚▼鍐呭瓨絀洪棿銆傚唴瀛樼殑鍫嗗拰鏍堟蹇靛彲鍙傝僉inux浠庣▼搴忓埌榪涚▼銆?/span></div><div><span style="font-size: 12px;"><br /></span></div><div> <img src="http://www.shnenglu.com/images/cppblog_com/zhenglinbo/31232316-9ceb14006ae34b97b3fbefaafccc9f80.png" border="0" alt="" width="211" height="274" /></div><div><span style="font-size: 12px;"><br /></span></div><div><span style="font-size: 12px;"><br /></span></div><div><span style="font-size: 12px;"><br /></span></div><div><span style="font-size: 12px;">瀵硅薄寮曠敤</span></div><div><span style="font-size: 12px;"><br /></span></div><div></div><div><span style="font-size: 12px;"><br /></span></div><div><span style="font-size: 12px;">鏍堢殑璇誨彇閫熷害姣斿爢蹇紝浣嗘爤涓婂瓨鍌ㄧ殑鏁版嵁鍙楀埌鏈夋晥鑼冨洿鐨勯檺鍒躲傚湪C璇█涓紝褰撲竴嬈″嚱鏁拌皟鐢ㄧ粨鏉熸椂錛岀浉搴旂殑鏍堝撫(stack frame)瑕佸垹闄わ紝鏍堝撫涓婂瓨鍌ㄧ殑鍙傞噺鍜岃嚜鍔ㄥ彉閲忓氨娑堝け浜嗐侸ava鐨勬爤涔熷彈鍒板悓鏍風殑闄愬埗錛屽綋涓嬈℃柟娉曡皟鐢ㄧ粨鏉燂紝璇ユ柟娉曞瓨鍌ㄥ湪鏍堜笂鐨勬暟鎹皢娓呯┖銆傚湪 Java涓紝鎵鏈夌殑(鏅?瀵硅薄閮藉偍瀛樺湪鍫嗕笂銆傚洜姝わ紝new鍏抽敭瀛楃殑瀹屾暣鍚箟鏄紝鍦ㄥ爢涓婂垱寤哄璞°?/span></div><div><span style="font-size: 12px;"><br /></span></div><div> </div><div><span style="font-size: 12px;"><br /></span></div><div><span style="font-size: 12px;">鍩烘湰綾誨瀷(primitive type)鐨勫璞★紝姣斿int, double錛屼繚瀛樺湪鏍堜笂銆傚綋鎴戜滑澹版槑鍩烘湰綾誨瀷鏃訛紝涓嶉渶瑕乶ew銆備竴鏃﹀0鏄庯紝Java灝嗗湪鏍堜笂鐩存帴瀛樺偍鍩烘湰綾誨瀷鐨勬暟鎹傛墍浠ワ紝鍩烘湰綾誨瀷鐨勫彉閲忓悕琛ㄧず鐨勬槸鏁版嵁鏈韓錛屼笉鏄紩鐢ㄣ?/span></div><div><span style="font-size: 12px;"><br /></span></div><div> </div><div><span style="font-size: 12px;"><br /></span></div><div> </div><div><span style="font-size: 12px;"><br /></span></div><div><span style="font-size: 12px;">寮曠敤鍜屽璞$殑鍏崇郴灝卞儚椋庣瓭鍜屼漢銆傛垜浠湅澶╃┖鏃?紼嬪簭閲屽啓鐨?錛岀湅鍒扮殑鏄絳?寮曠敤)錛屼絾椋庣瓭涓嬮潰瀵瑰簲鐨勶紝鏄漢(瀵硅薄):</span></div><div><span style="font-size: 12px;"><br /></span></div><div><span style="font-size: 12px;"><img src="http://www.shnenglu.com/images/cppblog_com/zhenglinbo/2.jpg" border="0" alt="" width="600" height="776" /><br /></span></div><div><span style="font-size: 12px;"><br /></span></div><div><span style="font-size: 12px;">寮曠敤鍜屽璞″垎紱伙紱寮曠敤鎸囧悜瀵硅薄</span></div><div><span style="font-size: 12px;"><br /></span></div><div> </div><div><span style="font-size: 12px;"><br /></span></div><div><span style="font-size: 12px;">灝界寮曠敤鍜屽璞℃槸鍒嗙鐨勶紝浣嗘垜浠墍鏈夐氬線瀵硅薄鐨勮闂繀欏葷粡榪囧紩鐢ㄨ繖涓?#8220;澶ч棬”錛屾瘮濡備互 寮曠敤.鏂規硶() 鐨勬柟寮忚闂璞$殑鏂規硶銆傚湪Java涓紝鎴戜滑涓嶈兘璺寵繃寮曠敤鍘葷洿鎺ユ帴瑙﹀璞°傚啀姣斿錛屽璞鐨勬暟鎹垚鍛樺鏋滄槸涓涓櫘閫氬璞錛宎鐨勬暟鎹垚鍛樹繚瀛樼殑鏄寚鍚戝璞鐨勫紩鐢?(濡傛灉鏄熀鏈被鍨嬪彉閲忥紝閭d箞a鐨勬暟鎹垚鍛樹繚瀛樼殑鏄熀鏈被鍨嬪彉閲忔湰韜簡)銆?/span></div><div><span style="font-size: 12px;"><br /></span></div><div><span style="font-size: 12px;">鍦↗ava涓紝寮曠敤璧峰埌浜嗘寚閽堢殑浣滅敤錛屼絾鎴戜滑涓嶈兘鐩存帴淇敼鎸囬拡鐨勫鹼紝姣斿鍍廋璇█閭f牱灝嗘寚閽堝煎姞1銆傛垜浠彧鑳介氳繃寮曠敤鎵ц瀵瑰璞$殑鎿嶄綔銆傝繖鏍風殑璁捐閬垮厤浜嗚澶氭寚閽堝彲鑳藉紩璧風殑閿欒銆?/span></div><div><span style="font-size: 12px;"><br /></span></div><div> </div><div><span style="font-size: 12px;"><br /></span></div><div><span style="font-size: 12px;">寮曠敤鐨勮祴鍊?/span></div><div><span style="font-size: 12px;">褰撴垜浠皢涓涓紩鐢ㄨ祴鍊肩粰鍙︿竴涓紩鐢ㄦ椂錛屾垜浠疄闄呬笂澶嶅埗鐨勬槸瀵硅薄鐨勫湴鍧銆備袱涓紩鐢ㄥ皢鎸囧悜鍚屼竴瀵硅薄銆傛瘮濡?dummyPerson=aPerson;錛屽皢瀵艱嚧:</span></div><div><span style="font-size: 12px;"><br /></span></div><div><span style="font-size: 12px;"><img src="http://www.shnenglu.com/images/cppblog_com/zhenglinbo/3.png" border="0" alt="" width="279" height="318" /><br /></span></div><div><span style="font-size: 12px;"><br /></span></div><div><span style="font-size: 12px;">涓涓璞″彲浠ユ湁澶氫釜寮曠敤 (涓涓漢鍙互鏀懼涓絳?銆傚綋紼嬪簭閫氳繃鏌愪釜寮曠敤淇敼瀵硅薄鏃訛紝閫氳繃鍏朵粬寮曠敤涔熷彲浠ョ湅鍒拌淇敼銆傛垜浠彲浠ョ敤浠ヤ笅Test綾繪潵嫻嬭瘯瀹為檯鏁堟灉:</span></div><div><span style="font-size: 12px;"><br /></span></div><div><span style="font-size: 12px;">澶嶅埗浠g爜</span></div><div><span style="font-size: 12px;">public class Test</span></div><div><span style="font-size: 12px;">{</span></div><div><span style="font-size: 12px;">    public static void main(String[] args)</span></div><div><span style="font-size: 12px;">        {</span></div><div><span style="font-size: 12px;">             Human aPerson = new Human(160);</span></div><div><span style="font-size: 12px;">             Human dummyPerson = aPerson;</span></div><div><span style="font-size: 12px;">             System.out.println(dummyPerson.getHeight());</span></div><div><span style="font-size: 12px;">             aPerson.growHeight(20);</span></div><div><span style="font-size: 12px;">             System.out.println(dummyPerson.getHeight());</span></div><div><span style="font-size: 12px;">        }</span></div><div><span style="font-size: 12px;">}</span></div><div><span style="font-size: 12px;">澶嶅埗浠g爜</span></div><div><span style="font-size: 12px;">鎴戜滑瀵筧Person鐨勪慨鏀瑰皢褰卞搷鍒癲ummyPerson銆傝繖涓や釜寮曠敤瀹為檯涓婃寚鍚戝悓涓瀵硅薄銆?/span></div><div><span style="font-size: 12px;"><br /></span></div><div> </div><div><span style="font-size: 12px;"><br /></span></div><div><span style="font-size: 12px;">鎵浠ワ紝灝嗕竴涓紩鐢ㄨ祴鍊肩粰鍙︿竴涓紩鐢紝騫朵笉鑳藉鍒跺璞℃湰韜傛垜浠繀欏誨姹傚叾浠栫殑鏈哄埗鏉ュ鍒跺璞°?/span></div><div><span style="font-size: 12px;"><br /></span></div><div> </div><div><span style="font-size: 12px;"><br /></span></div><div><span style="font-size: 12px;">鍨冨溇鍥炴敹</span></div><div><span style="font-size: 12px;">闅忕潃鏂規硶璋冪敤鐨勭粨鏉燂紝寮曠敤鍜屽熀鏈被鍨嬪彉閲忎細琚竻絀恒傜敱浜庡璞″瓨媧諱簬鍫嗭紝鎵浠ュ璞℃墍鍗犳嵁鐨勫唴瀛樹笉浼氶殢鐫鏂規硶璋冪敤鐨勭粨鏉熻屾竻絀恒傝繘紼嬬┖闂村彲鑳藉緢蹇涓嶆柇鍒涘緩鐨勫璞″崰婊°侸ava鍐呭緩鏈夊瀮鍦懼洖鏀?garbage collection)鏈哄埗錛岀敤浜庢竻絀轟笉鍐嶄嬌鐢ㄧ殑瀵硅薄錛屼互鍥炴敹鍐呭瓨絀洪棿銆?/span></div><div><span style="font-size: 12px;"><br /></span></div><div><span style="font-size: 12px;">鍨冨溇鍥炴敹鐨勫熀鏈師鍒欐槸錛屽綋瀛樺湪寮曠敤鎸囧悜鏌愪釜瀵硅薄鏃訛紝閭d箞璇ュ璞′笉浼氳鍥炴敹; 褰撴病鏈変換浣曞紩鐢ㄦ寚鍚戞煇涓璞℃椂錛岃瀵硅薄琚竻絀恒傚畠鎵鍗犳嵁鐨勭┖闂磋鍥炴敹銆?/span></div><div><span style="font-size: 12px;"><img src="http://www.shnenglu.com/images/cppblog_com/zhenglinbo/4.png" border="0" alt="" width="307" height="464" /><br /></span></div><div><span style="font-size: 12px;">涓婂浘鍋囪浜嗘煇涓椂鍒籎VM涓殑鍐呭瓨鐘舵併侶uman Object鏈変笁涓紩鐢? 鏉ヨ嚜鏍堢殑aPerson鍜宒ummyPerson錛屼互鍙婂彟涓涓璞$殑鏁版嵁鎴愬憳president銆傝孋lub Object娌℃湁寮曠敤銆傚鏋滆繖涓椂鍊欏瀮鍦懼洖鏀跺惎鍔紝閭d箞Club Object灝嗚娓呯┖錛岃孒uman Object鏉ヨ嚜Club Object鐨勫紩鐢?president)涔熼殢涔嬭鍒犻櫎銆?/span></div><div><span style="font-size: 12px;"><br /></span></div><div> </div><div><span style="font-size: 12px;"><br /></span></div><div><span style="font-size: 12px;">鍨冨溇鍥炴敹鏄疛ava涓噸瑕佺殑鏈哄埗錛屽畠鐩存帴褰卞搷浜咼ava鐨勮繍琛屾晥鐜囥傛垜灝嗗湪浠ュ悗娣卞叆鍏剁粏鑺傘?/span></div><div><span style="font-size: 12px;"><br /></span></div><div> </div><div><span style="font-size: 12px;"><br /></span></div><div><span style="font-size: 12px;">鍙傛暟浼犻?br /><br /></span></div><div><span style="font-size: 12px;">褰撴垜浠垎紱諱簡寮曠敤鍜屽璞$殑姒傚康鍚庯紝Java鏂規硶鐨勫弬鏁頒紶閫掓満鍒跺疄闄呬笂闈炲父娓呮櫚: Java鐨勫弬鏁頒紶閫掍負鍊間紶閫掋備篃灝辨槸璇達紝褰撴垜浠紶閫掍竴涓弬鏁版椂錛屾柟娉曞皢鑾峰緱璇ュ弬鏁扮殑涓涓嫹璐濄?/span></div><div><span style="font-size: 12px;"><br /></span></div><div><span style="font-size: 12px;">瀹為檯涓婏紝鎴戜滑浼犻掔殑鍙傛暟錛屼竴涓槸鍩烘湰綾誨瀷鐨勫彉閲忥紝鍙︿竴涓負瀵硅薄鐨勫紩鐢ㄣ?/span></div><div><span style="font-size: 12px;"><br /></span></div><div><span style="font-size: 12px;">鍩烘湰綾誨瀷鍙橀噺鐨勫間紶閫掞紝鎰忓懗鐫鍙橀噺鏈韓琚鍒訛紝騫朵紶閫掔粰Java鏂規硶銆侸ava鏂規硶瀵瑰彉閲忕殑淇敼涓嶄細褰卞搷鍒板師鍙橀噺銆?/span></div><div><span style="font-size: 12px;"><br /></span></div><div><span style="font-size: 12px;">寮曠敤鐨勫間紶閫掞紝鎰忓懗鐫瀵硅薄鐨勫湴鍧琚鍒訛紝騫朵紶閫掔粰Java鏂規硶銆侸ava鏂規硶鏍規嵁璇ュ紩鐢ㄧ殑璁塊棶灝嗕細褰卞搷瀵硅薄銆?/span></div><div><span style="font-size: 12px;"><br /></span></div><div> </div><div><span style="font-size: 12px;"><br /></span></div><div><span style="font-size: 12px;">鍦ㄨ繖閲屾湁鍙︿竴涓煎緱涓鎻愮殑鎯呭喌: 鎴戜滑鍦ㄦ柟娉曞唴閮ㄤ嬌鐢╪ew鍒涘緩瀵硅薄錛屽茍灝嗚瀵硅薄鐨勫紩鐢ㄨ繑鍥炪傚鏋滆榪斿洖琚竴涓紩鐢ㄦ帴鏀訛紝鐢變簬瀵硅薄鐨勫紩鐢ㄤ笉涓?錛屽璞′緷鐒跺瓨鍦紝涓嶄細琚瀮鍦懼洖鏀躲?/span></div><div><span style="font-size: 12px;"><br /></span></div><div> </div><div><span style="font-size: 12px;"><br /></span></div><div><span style="font-size: 12px;">鎬葷粨</span></div><div><span style="font-size: 12px;">new</span></div><div><span style="font-size: 12px;"><br /></span></div><div><span style="font-size: 12px;">寮曠敤錛屽璞?/span></div><div><span style="font-size: 12px;"><br /></span></div><div><span style="font-size: 12px;">琚瀮鍦懼洖鏀剁殑鏉′歡</span></div><div><span style="font-size: 12px;"><br /></span></div><div><span style="font-size: 12px;">鍙傛暟: 鍊間紶閫?/span></div><div><span style="font-size: 12px;"><br /></span></div><div> </div><img src ="http://www.shnenglu.com/zhenglinbo/aggbug/203450.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://www.shnenglu.com/zhenglinbo/" target="_blank">hoshelly</a> 2013-09-27 08:39 <a href="http://www.shnenglu.com/zhenglinbo/archive/2013/09/27/203450.html#Feedback" target="_blank" style="text-decoration:none;">鍙戣〃璇勮</a></div>]]></description></item><item><title>Java socket緙栫▼鍏ラ棬錛堣漿錛?/title><link>http://www.shnenglu.com/zhenglinbo/archive/2013/07/05/201533.html</link><dc:creator>hoshelly</dc:creator><author>hoshelly</author><pubDate>Fri, 05 Jul 2013 07:55:00 GMT</pubDate><guid>http://www.shnenglu.com/zhenglinbo/archive/2013/07/05/201533.html</guid><wfw:comment>http://www.shnenglu.com/zhenglinbo/comments/201533.html</wfw:comment><comments>http://www.shnenglu.com/zhenglinbo/archive/2013/07/05/201533.html#Feedback</comments><slash:comments>0</slash:comments><wfw:commentRss>http://www.shnenglu.com/zhenglinbo/comments/commentRss/201533.html</wfw:commentRss><trackback:ping>http://www.shnenglu.com/zhenglinbo/services/trackbacks/201533.html</trackback:ping><description><![CDATA[榪欎釜緗戠珯涓婅寰楀緢娓呮錛屽氨涓嶈漿杞戒簡錛岀洿鎺ヨ創鍦板潃錛?span style="font-size: 12px;"><a >http://www.binarytides.com/java-socket-programming-tutorial/</a></span><img src ="http://www.shnenglu.com/zhenglinbo/aggbug/201533.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://www.shnenglu.com/zhenglinbo/" target="_blank">hoshelly</a> 2013-07-05 15:55 <a href="http://www.shnenglu.com/zhenglinbo/archive/2013/07/05/201533.html#Feedback" target="_blank" style="text-decoration:none;">鍙戣〃璇勮</a></div>]]></description></item><item><title>exec鍑芥暟http://www.shnenglu.com/zhenglinbo/archive/2013/05/14/200259.htmlhoshellyhoshellyTue, 14 May 2013 09:37:00 GMThttp://www.shnenglu.com/zhenglinbo/archive/2013/05/14/200259.htmlhttp://www.shnenglu.com/zhenglinbo/comments/200259.htmlhttp://www.shnenglu.com/zhenglinbo/archive/2013/05/14/200259.html#Feedback0http://www.shnenglu.com/zhenglinbo/comments/commentRss/200259.htmlhttp://www.shnenglu.com/zhenglinbo/services/trackbacks/200259.html鐢╢ o r k鍑芥暟鍒涘緩瀛愯繘紼嬪悗錛屽瓙榪涚▼寰寰瑕佽皟鐢ㄤ竴縐峞 x e c鍑芥暟浠ユ墽琛屽彟涓涓▼搴忋?/span>褰撹繘紼嬭皟鐢ㄤ竴縐峞 x e c鍑芥暟鏃訛紝璇ヨ繘紼嬪畬鍏ㄧ敱鏂扮▼搴忎唬鎹紝鑰屾柊紼嬪簭鍒欎粠鍏?m a i n鍑芥暟寮濮嬫墽琛屻?/span>鍥犱負璋冪敤e x e c騫朵笉鍒涘緩鏂拌繘紼嬶紝鎵浠ュ墠鍚庣殑榪涚▼I D騫舵湭鏀瑰彉銆?/span>e x e c鍙槸鐢ㄥ彟涓涓柊紼嬪簭鏇挎崲浜?/u>褰撳墠榪涚▼鐨勬鏂囥佹暟鎹佸爢鍜屾爤孌點?/u>
鏈夊叚縐嶄笉鍚岀殑e x e c鍑芥暟鍙緵浣跨敤錛堝叿浣撳弬鑰傾PUE錛夛紝瀹冧滑甯稿父琚粺縐頒負e x e c鍑芥暟銆傝繖浜沞 x e c鍑芥暟閮芥槸U N I X榪?/span>紼嬫帶鍒跺師璇傜敤f o r k鍙互鍒涘緩鏂拌繘紼嬶紝鐢╡ x e c鍙互鎵ц鏂扮殑紼嬪簭銆俥 x i t鍑芥暟鍜屼袱涓獁 a i t鍑芥暟澶勭悊緇堟鍜岀瓑寰呯粓姝€傝繖浜涙槸鎴戜滑闇瑕佺殑鍩烘湰鐨勮繘紼嬫帶鍒跺師璇?br />


hoshelly 2013-05-14 17:37 鍙戣〃璇勮
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init榪涚▼ 涓庡兊灝歌繘紼?/title><link>http://www.shnenglu.com/zhenglinbo/archive/2013/05/14/200258.html</link><dc:creator>hoshelly</dc:creator><author>hoshelly</author><pubDate>Tue, 14 May 2013 09:32:00 GMT</pubDate><guid>http://www.shnenglu.com/zhenglinbo/archive/2013/05/14/200258.html</guid><wfw:comment>http://www.shnenglu.com/zhenglinbo/comments/200258.html</wfw:comment><comments>http://www.shnenglu.com/zhenglinbo/archive/2013/05/14/200258.html#Feedback</comments><slash:comments>0</slash:comments><wfw:commentRss>http://www.shnenglu.com/zhenglinbo/comments/commentRss/200258.html</wfw:commentRss><trackback:ping>http://www.shnenglu.com/zhenglinbo/services/trackbacks/200258.html</trackback:ping><description><![CDATA[<div></div><div><span style="font-size: 10pt;">鍦ㄨ鏄巉 o r k鍑芥暟鏃訛紝涓瀹氭槸涓涓埗榪涚▼鐢熸垚涓涓瓙榪涚▼銆備笂闈㈠張璇存槑浜嗗瓙榪涚▼灝嗗叾緇堟鐘?/span><span style="font-size: 10pt;">鎬佽繑鍥炵粰鐖惰繘紼嬨備絾鏄鏋滅埗榪涚▼鍦ㄥ瓙榪涚▼涔嬪墠緇堟錛屽垯灝嗗浣曞憿錛熷叾鍥炵瓟鏄浜庡叾鐖惰繘紼嬪凡</span><span style="font-size: 10pt;">緇忕粓姝㈢殑鎵鏈夎繘紼嬶紝瀹冧滑鐨勭埗榪涚▼閮芥敼鍙樹負i n i t榪涚▼銆?/span></div><div><span style="font-size: 10pt;">鎴戜滑縐拌繖浜涜繘紼嬬敱i n i t榪涚▼棰嗗吇銆傚叾鎿嶄綔</span><span style="font-size: 10pt;">榪囩▼澶ц嚧鏄細鍦ㄤ竴涓繘紼嬬粓姝㈡椂錛屽唴鏍擱愪釜媯鏌ユ墍鏈夋椿鍔ㄨ繘紼嬶紝浠ュ垽鏂畠鏄惁鏄瑕佺粓姝㈢殑榪?/span><span style="font-size: 10pt;">紼嬬殑瀛愯繘紼嬶紝濡傛灉鏄紝鍒欒榪涚▼鐨勭埗榪涚▼I D灝辨洿鏀逛負1 ( i n i t榪涚▼鐨処 D )銆傝繖縐嶅鐞嗘柟娉曚繚璇佷簡姣?/span><span style="font-size: 10pt;">涓繘紼嬫湁涓涓埗榪涚▼銆?br /><br /></span><div><span style="font-size: 10pt;">濡傛灉瀛愯繘紼嬪湪鐖惰繘紼嬩箣鍓嶇粓姝紝閭d箞鐖惰繘紼嬪張濡備綍鑳藉湪鍋氱浉搴旀</span><span style="font-size: 10pt;">鏌ユ椂寰楀埌瀛愯繘紼嬬殑緇堟鐘舵佸憿錛熷姝ら棶棰樼殑鍥炵瓟鏄唴鏍鎬負姣忎釜緇堟瀛愯繘紼嬩繚瀛樹簡涓瀹氶噺鐨勪俊</span></div><div><span style="font-size: 10pt;">鎭紝鎵浠ュ綋緇堟榪涚▼鐨勭埗榪涚▼璋冪敤 w a i t鎴杦aitpid 鏃訛紝鍙互寰楀埌鏈夊叧淇℃伅銆傝繖縐嶄俊鎭嚦灝戝寘鎷?/span><span style="font-size: 10pt;">榪涚▼I D銆佽榪涚▼鐨勭粓姝㈢姸鎬併佷互鍙嶈榪涚▼浣跨敤鐨?C P U鏃墮棿鎬婚噺銆傚唴鏍稿彲浠ラ噴鏀劇粓姝㈣繘紼嬫墍浣?/span><span style="font-size: 10pt;">鐢ㄧ殑鎵鏈夊瓨鍌ㄥ櫒錛屽叧闂叾鎵鏈夋墦寮鏂囦歡銆傚湪 U N I X鏈涓紝涓涓凡緇忕粓姝€佷絾鏄叾鐖惰繘紼嬪皻鏈?/span><span style="font-size: 10pt;">瀵瑰叾榪涜鍠勫悗澶勭悊錛堣幏鍙栫粓姝㈠瓙榪涚▼鐨勬湁鍏充俊鎭侀噴鏀懼畠浠嶅崰鐢ㄧ殑璧勬簮錛夌殑榪涚▼琚О涓哄兊姝昏繘紼嬶紙z o m b i e錛夈俻 s ( 1 )鍛戒護灝嗗兊姝昏繘紼嬬殑鐘舵佹墦鍗頒負 Z銆?br /><br /></span><div><span style="font-size: 10pt;">涓涓敱i n i t榪涚▼棰嗗吇鐨勮繘紼嬬粓姝㈡椂浼氬彂鐢熶粈涔?瀹冧細涓嶄細鍙樻垚涓</span><span style="font-size: 10pt;">涓兊姝昏繘紼嬶紵瀵規闂鐨勫洖絳旀槸“鍚?#8221;錛屽洜涓篿 n i t琚紪鍐欐垚鍙鏈変竴涓瓙榪涚▼緇堟錛?i n i t灝變細璋?/span><span style="font-size: 10pt;">鐢ㄤ竴涓獁 a i t鍑芥暟鍙栧緱鍏剁粓姝㈢姸鎬併傝繖鏍蜂篃灝遍槻姝簡鍦ㄧ郴緇熶腑鏈夊緢澶氬兊姝昏繘紼嬨傚綋鎻愬強“涓涓猧 n i t</span><span style="font-size: 10pt;">鐨勫瓙榪涚▼”鏃訛紝榪欐寚鐨勬槸i n i t鐩存帴浜х敓鐨勮繘紼嬶紝鎴栬呮槸鍏剁埗</span><span style="font-size: 10pt;">榪涚▼宸茬粓姝紝鐢眎nit 棰嗗吇鐨勮繘紼嬨?/span></div></div></div><img src ="http://www.shnenglu.com/zhenglinbo/aggbug/200258.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://www.shnenglu.com/zhenglinbo/" target="_blank">hoshelly</a> 2013-05-14 17:32 <a href="http://www.shnenglu.com/zhenglinbo/archive/2013/05/14/200258.html#Feedback" target="_blank" style="text-decoration:none;">鍙戣〃璇勮</a></div>]]></description></item><item><title>fork 鍜?vfork 鐨勫尯鍒?& exit 鍜宊exit鐨勫尯鍒?/title><link>http://www.shnenglu.com/zhenglinbo/archive/2013/05/14/200257.html</link><dc:creator>hoshelly</dc:creator><author>hoshelly</author><pubDate>Tue, 14 May 2013 09:26:00 GMT</pubDate><guid>http://www.shnenglu.com/zhenglinbo/archive/2013/05/14/200257.html</guid><wfw:comment>http://www.shnenglu.com/zhenglinbo/comments/200257.html</wfw:comment><comments>http://www.shnenglu.com/zhenglinbo/archive/2013/05/14/200257.html#Feedback</comments><slash:comments>0</slash:comments><wfw:commentRss>http://www.shnenglu.com/zhenglinbo/comments/commentRss/200257.html</wfw:commentRss><trackback:ping>http://www.shnenglu.com/zhenglinbo/services/trackbacks/200257.html</trackback:ping><description><![CDATA[<span style="font-size: 10pt;">1.1<br />fork鍙互鍒涘緩涓涓柊鐨勫瓙榪涚▼錛岃皟鐢ㄤ竴嬈★紝榪斿洖涓ゆ錛屼竴嬈¤繑鍥?鍊肩粰瀛愯繘紼嬶紝鍙︿竴嬈¤繑鍥炴柊鐨勫瓙榪涚▼鐨処D緇欑埗榪涚▼ 銆傚瓙榪涚▼鏄埗榪涚▼鐨勫鍒跺搧錛屾嫢鏈夌埗榪涚▼鐨勬暟鎹┖闂淬佸爢鍜屾爤錛岀埗瀛愯繘紼嬪茍涓嶅叡浜瓨鍌ㄧ┖闂達紝濡傛灉姝f枃孌墊槸鍙鐨勶紝閭d箞鐖跺瓙榪涚▼鍏變韓姝f枃孌點?/span><br /><span style="font-size: 10pt;">涓鑸岃█錛宖ork涔嬪悗鏄埗榪涚▼鍏堟墽琛岃繕鏄瓙榪涚▼鍏堟墽琛屾槸涓嶇‘瀹氱殑錛岃繖鍙栧喅浜庡唴鏍哥殑璋冨害綆楁硶銆?/span><br /><span style="font-size: 10pt;">fork鏈変袱縐嶇敤娉曪細</span><br /><span style="font-size: 10pt;">錛?錛変竴涓埗榪涚▼甯屾湜澶嶅埗鑷繁錛屼嬌鐖躲佸瓙榪涚▼鍚屾椂鎵ц涓嶅悓鐨勪唬鐮佹銆?/span><span style="font-size: 10pt;">榪欏湪緗戠粶鏈嶅姟榪涚▼</span><span style="font-size: 10pt;">涓槸甯歌鐨?#8212;—鐖惰繘紼嬬瓑寰呭鎵樿呯殑鏈嶅姟璇鋒眰銆傚綋榪欑璇鋒眰鍒拌揪鏃訛紝鐖惰繘紼嬭皟鐢?f o r k錛屼嬌瀛愯繘</span><span style="font-size: 10pt;">紼嬪鐞嗘璇鋒眰銆傜埗榪涚▼鍒欑戶緇瓑寰呬笅涓涓湇鍔¤姹傘?/span><div><span style="font-size: 10pt;">錛?錛?涓涓繘紼嬭鎵ц涓涓笉鍚岀殑紼嬪簭銆傝繖瀵箂 h e l l鏄父瑙佺殑鎯呭喌銆傚湪榪欑鎯呭喌涓嬶紝瀛愯繘紼嬪湪</span><span style="font-size: 10pt;">浠巉 o r k榪斿洖鍚庣珛鍗寵皟鐢╡ x e c銆?/span></div><br /><span style="font-size: 10pt;">1.2<br />vfork鐢ㄤ簬鍒涘緩涓涓柊鐨勮繘紼嬶紝鑰屾柊鐨勮繘紼嬬殑鐩殑灝辨槸exec涓涓柊紼嬪簭錛寁fork騫朵笉灝嗙埗榪涚▼鐨勫湴鍧絀洪棿澶嶅埗緇欏瓙榪涚▼錛屽洜涓哄瓙榪涚▼浼氱珛鍗寵皟鐢╡xec錛坃exit錛夛紝浜庢槸涔熷氨涓嶄細璁塊棶鍦板潃絀洪棿銆備笉榪囧畠鍦ㄨ皟鐢╡xec鎴朹exit涔嬪墠錛屽畠鍦ㄧ埗榪涚▼鐨勭┖闂翠腑榪愯銆?br /><br />fork鍒涘緩鐨勫瓙榪涚▼鍏變韓鐖惰繘紼嬬殑鏁版嵁孌點佸爢鏍堟錛泇fork鍒涘緩鐨勫瓙榪涚▼鍏變韓鐖惰繘紼嬬殑鏁版嵁孌點?br /><br />vfork涓巉ork鐨勫彟涓涓尯鍒槸錛歷fork淇濊瘉瀛愯繘紼嬪厛榪愯錛屽湪瀹冭皟鐢╡xec鎴杄xit涔嬪悗鐖惰繘紼嬫墠鍙兘琚皟搴﹁繍琛岋紝錛堝鏋滃湪璋冪敤榪欎袱涓嚱鏁頒箣鍓嶅瓙榪涚▼渚濊禆浜庣埗榪涚▼鐨勮繘涓姝ュ姩浣滐紝鍒欎細瀵艱嚧姝婚攣錛夈?br /><br />2.1<br />exit鍜宊exit閮芥槸姝e父緇堟榪涚▼錛宊exit鐢ㄤ簬vfork鏃剁埗榪涚▼鏈夊彲鑳戒細琚皟搴︼紝瀹冧滑閮戒笉鍚屼簬寮傚父緇堟abort錛屽湪寮傚父緇堟鎯呭喌涓嬶紝鍐呮牳錛堜笉鏄繘紼嬶級浜х敓涓涓寚紺哄叾緇堟寮傚父緇堟鍘熷洜鐨勭粓姝㈢姸鎬併?/span><img src ="http://www.shnenglu.com/zhenglinbo/aggbug/200257.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://www.shnenglu.com/zhenglinbo/" target="_blank">hoshelly</a> 2013-05-14 17:26 <a href="http://www.shnenglu.com/zhenglinbo/archive/2013/05/14/200257.html#Feedback" target="_blank" style="text-decoration:none;">鍙戣〃璇勮</a></div>]]></description></item><item><title>ourhdr.h緙栬瘧閿欒鏃惰В鍐沖姙娉?/title><link>http://www.shnenglu.com/zhenglinbo/archive/2013/05/14/200253.html</link><dc:creator>hoshelly</dc:creator><author>hoshelly</author><pubDate>Tue, 14 May 2013 08:03:00 GMT</pubDate><guid>http://www.shnenglu.com/zhenglinbo/archive/2013/05/14/200253.html</guid><wfw:comment>http://www.shnenglu.com/zhenglinbo/comments/200253.html</wfw:comment><comments>http://www.shnenglu.com/zhenglinbo/archive/2013/05/14/200253.html#Feedback</comments><slash:comments>0</slash:comments><wfw:commentRss>http://www.shnenglu.com/zhenglinbo/comments/commentRss/200253.html</wfw:commentRss><trackback:ping>http://www.shnenglu.com/zhenglinbo/services/trackbacks/200253.html</trackback:ping><description><![CDATA[緗戜笂鎵劇殑錛屾憳鎶勫涓嬶細<br /><br /><div><span style="font-size: 12px;">錛僫nclude "apue.h"</span></div><div><span style="font-size: 12px;">    榪欎釜澶存枃浠舵槸浣滆呮妸姣忎釜渚嬬▼涓父鐢ㄧ殑鏍囧噯澶存枃浠訛紝涓浜涘父鐢ㄧ殑鍑洪敊澶勭悊鍑芥暟錛坋rr_**錛堬級涔嬬被鐨勫嚱</span></div><div><span style="font-size: 12px;">鏁幫級鍜屼竴浜涘父鐢ㄧ殑瀹忓畾涔夌粰鏁寸悊鍦ㄤ竴涓ご鏂囦歡涓傝繖涓彲浠ョ渷鍘誨湪姣忎釜渚嬬▼涓綍鍏ヨ緝澶氱殑閲嶅浠g爜錛岃繖鏍峰彲</span></div><div><span style="font-size: 12px;">浠ュ噺灝戞瘡涓緥紼嬬殑闀垮害銆備絾緇欒鑰呭甫鏉ヤ簡涓嶅皯楹葷儲銆備笅闈㈢粰鍑烘簮浠g爜鐨勭紪璇戞柟娉曘?/span></div><div><span style="font-size: 12px;"><br /></span></div><div> </div><div><span style="font-size: 12px;"><br /></span></div><div><span style="font-size: 12px;">涓錛氭暣浣撶紪璇戯細</span></div><div><span style="font-size: 12px;"><br /></span></div><div><span style="font-size: 12px;">1.APUE2婧愪唬鐮佷笅杞斤細http://www.apuebook.com/src.tar.gz</span></div><div><span style="font-size: 12px;">2.鎴戜繚瀛樺埌浜?home/wx涓?瑙e帇緙?tar zxvf src.tar.gz</span></div><div><span style="font-size: 12px;">3.cd apue.2e鍒癮pue.2e鐩綍錛堟煡鐪婻EADME,鍛婅瘔鎴戜滑linux緋葷粺鍙淇敼Make.defines.linux鍐峬ake錛?/span></div><div><span style="font-size: 12px;">4.vi Make.defines.linux 淇敼WKDIR=/home/wx/apue.2e 灝辨槸璇村伐浣滅洰褰曚負WKDIR=/home/wx/apue.2e</span></div><div><span style="font-size: 12px;">5.淇敼/home/wx/apue.2e/std/linux.mk鎶婂叏閮ㄧ殑nawk鏀逛負awk.鍥犱簺linux榛樿娌℃湁nawk</span></div><div><span style="font-size: 12px;">6.cd /home/wx/apue.2e</span></div><div><span style="font-size: 12px;"><br /></span></div><div><span style="font-size: 12px;">   make</span></div><div><span style="font-size: 12px;">7.鎶婄敓鎴愮殑apue.2e/lib/libapue.a涓巃pue.2e/include/apue.h鎷瘋礉鍒頒綘緙栧啓鐨勬簮浠g爜鐩綍涓嬨?/span></div><div><span style="font-size: 12px;"><br /></span></div><div><span style="font-size: 12px;">   錛堟敞錛氫綘鍙互鎶妉ibapue.a鍜宎pue.h淇濆瓨鍦ㄥ鏄撴壘鍒扮殑鏂囦歡澶逛腑錛屼互渚夸嬌鐢級</span></div><div><span style="font-size: 12px;"><br /></span></div><div><span style="font-size: 12px;">8.浣跨敤gcc -o ls1 ls1.c  libapue.a鏉ョ紪璇戜綘鐨勬簮浠g爜</span></div><div><span style="font-size: 12px;">9.鎴愬姛<br /><br /><br /></span></div><div style="font-family: Tahoma; font-size: 11px;"></div><img src ="http://www.shnenglu.com/zhenglinbo/aggbug/200253.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://www.shnenglu.com/zhenglinbo/" target="_blank">hoshelly</a> 2013-05-14 16:03 <a href="http://www.shnenglu.com/zhenglinbo/archive/2013/05/14/200253.html#Feedback" target="_blank" style="text-decoration:none;">鍙戣〃璇勮</a></div>]]></description></item><item><title>Vim鏂囨湰鐨勯夋嫨http://www.shnenglu.com/zhenglinbo/archive/2013/04/13/199417.htmlhoshellyhoshellySat, 13 Apr 2013 14:57:00 GMThttp://www.shnenglu.com/zhenglinbo/archive/2013/04/13/199417.htmlhttp://www.shnenglu.com/zhenglinbo/comments/199417.htmlhttp://www.shnenglu.com/zhenglinbo/archive/2013/04/13/199417.html#Feedback0http://www.shnenglu.com/zhenglinbo/comments/commentRss/199417.htmlhttp://www.shnenglu.com/zhenglinbo/services/trackbacks/199417.html
鍦ㄦ甯告ā寮忎笅錛堟寜ESC榪涘叆錛夋寜閿畍榪涘叆鍙鍖栨ā寮忥紝鐒跺悗鎸夐敭鐩樺乏鍙抽敭鎴杊,l閿嵆鍙疄鐜版枃鏈殑閫夋嫨銆?/span>
鍏跺畠鐩稿叧鍛戒護錛?/span>
v錛氭寜瀛楃閫夋嫨銆傜粡甯鎬嬌鐢ㄧ殑妯″紡錛屾墍浠ヤ翰鑷皾璇曚竴涓嬪畠銆?/span>
V錛氭寜琛岄夋嫨銆傝繖鍦ㄤ綘鎯蟲嫹璐濇垨鑰呯Щ鍔ㄥ緢澶氳鐨勬枃鏈殑鏃跺欑壒鍒湁鐢ㄣ?/span>

CTRL錛媣錛氭寜鍧楅夋嫨銆傞潪甯稿己澶э紝鍙湪寰堝皯鐨勭紪杈戝櫒涓墠鏈夎繖鏍風殑鍔熻兘銆備綘鍙互閫夋嫨涓涓煩褰㈠潡錛屽茍涓斿湪榪欎釜鐭╁艦閲岄潰鐨勬枃鏈細琚珮浜?/span>

鍊煎緱娉ㄦ剰鐨勬槸濡傛灉VIM涓嬌鐢ㄨ嚜鍔ㄦ崲琛岋紝閭d箞鐩村埌浣犳寜ENTER鎹㈣鍓嶏紝VIM閮戒細灝嗕綘涔嬪墠杈撳叆鐨勫唴瀹硅涓轟竴琛岃屼笉鏄綘鐪嬪埌鐨勫ソ鍑犺錛屾寜鍧楅夋嫨鏃跺氨浼氭寜VIM涓殑琛屾潵閫夋嫨鍧椼?/span>

鍦ㄩ夋嫨妯″紡鐨勬椂鍊欎嬌鐢ㄤ笂闈㈡墍榪扮殑鏂瑰悜閿拰鍛戒護錛坢otion錛夈傛瘮濡傦紝vwww錛屼細楂樹寒鍏夋爣鍓嶉潰鐨勪笁涓瘝銆俈jj 灝嗕細楂樹寒褰撳墠琛屼互鍙婁笅闈袱琛屻?/span>


hoshelly 2013-04-13 22:57 鍙戣〃璇勮
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wait 鍜寃aitpid璇﹁Вhttp://www.shnenglu.com/zhenglinbo/archive/2013/04/13/199412.htmlhoshellyhoshellySat, 13 Apr 2013 14:05:00 GMThttp://www.shnenglu.com/zhenglinbo/archive/2013/04/13/199412.htmlhttp://www.shnenglu.com/zhenglinbo/comments/199412.htmlhttp://www.shnenglu.com/zhenglinbo/archive/2013/04/13/199412.html#Feedback0http://www.shnenglu.com/zhenglinbo/comments/commentRss/199412.htmlhttp://www.shnenglu.com/zhenglinbo/services/trackbacks/199412.htmlwait鐨勫嚱鏁板師鍨嬫槸錛?銆
#include<sys/types.h>
#include <sys/wait.h>

pid_t wait(int *status) 銆銆銆銆
      榪涚▼涓鏃﹁皟鐢ㄤ簡wait錛屽氨绔嬪嵆闃誨鑷繁錛岀敱wait鑷姩鍒嗘瀽鏄?/span>
鍚﹀綋鍓嶈繘紼嬬殑鏌愪釜瀛愯繘紼嬪凡緇忛鍑猴紝濡傛灉璁╁畠鎵懼埌浜嗚繖鏍蜂竴涓?/span>
宸茬粡鍙樻垚鍍靛案鐨勫瓙榪涚▼錛?wait灝變細鏀墮泦榪欎釜瀛愯繘紼嬬殑淇℃伅錛屽茍
鎶婂畠褰誨簳閿姣佸悗榪斿洖錛涘鏋滄病鏈夋壘鍒拌繖鏍蜂竴涓瓙榪涚▼錛寃ait灝?/span>
浼氫竴鐩撮樆濉炲湪榪欓噷錛岀洿鍒版湁涓涓嚭鐜頒負姝€傘銆銆銆
      鍙傛暟status鐢ㄦ潵淇濆瓨琚敹闆嗚繘紼嬮鍑烘椂鐨勪竴浜涚姸鎬侊紝瀹冩槸
涓涓寚鍚慽nt綾誨瀷鐨勬寚閽堛備絾濡傛灉鎴戜滑瀵硅繖涓瓙榪涚▼鏄浣曟鎺?/span>
鐨勬涓嶅湪鎰忥紝鍙兂鎶婅繖涓兊灝歌繘紼嬫秷鐏帀錛岋紙浜嬪疄涓婄粷澶у鏁?/span>
鎯呭喌涓嬶紝鎴戜滑閮戒細榪欐牱鎯籌級錛屾垜浠氨鍙互璁懼畾榪欎釜鍙傛暟涓?/span>
NULL錛屽氨璞′笅闈㈣繖鏍鳳細銆銆 銆銆pid = wait(NULL);
濡傛灉鎴愬姛錛寃ait浼氳繑鍥炶鏀墮泦鐨勫瓙榪涚▼鐨勮繘紼婭D錛屽鏋滆皟鐢ㄨ繘
紼嬫病鏈夊瓙榪涚▼錛岃皟鐢ㄥ氨浼氬け璐ワ紝姝ゆ椂wait榪斿洖-1錛屽悓鏃秂rrno琚?/span>
緗負ECHILD銆傘
      waitpid鐨勫嚱鏁板師鍨嬫槸錛?銆銆
waitpid緋葷粺璋冪敤鍦↙inux鍑芥暟搴撲腑鐨勫師鍨嬫槸錛?銆銆
#include <sys/types.h>#include <sys/wait.h>

pid_t waitpid(pid_t pid,int *status,int options)
      浠庢湰璐ㄤ笂璁詫紝緋葷粺璋冪敤waitpid鍜寃ait鐨勪綔鐢ㄦ槸瀹屽叏鐩稿悓
鐨勶紝浣唚aitpid澶氬嚭浜嗕袱涓彲鐢辯敤鎴鋒帶鍒剁殑鍙傛暟pid鍜宱ptions錛?/span>
浠庤屼負鎴戜滑緙栫▼鎻愪緵浜嗗彟涓縐嶆洿鐏墊椿鐨勬柟寮忋?/span>
涓嬮潰鎴戜滑灝辨潵璇︾粏浠嬬粛涓涓嬭繖涓や釜鍙傛暟錛氥銆 銆銆
● pid 銆銆銆銆浠庡弬鏁扮殑鍚嶅瓧pid鍜岀被鍨媝id_t涓氨鍙互鐪嬪嚭錛?/span>
榪欓噷闇瑕佺殑鏄竴涓繘紼婭D銆備絾褰損id鍙栦笉鍚岀殑鍊兼椂錛屽湪榪欓噷鏈変笉
鍚岀殑鎰忎箟銆?銆銆銆銆pid>0鏃訛紝鍙瓑寰呰繘紼婭D絳変簬pid鐨勫瓙榪?/span>
紼嬶紝涓嶇鍏跺畠宸茬粡鏈夊灝戝瓙榪涚▼榪愯緇撴潫閫鍑轟簡錛屽彧瑕佹寚瀹氱殑
瀛愯繘紼嬭繕娌℃湁緇撴潫錛寃aitpid灝變細涓鐩寸瓑涓嬪幓銆傘銆 銆銆pid=-
1鏃訛紝絳夊緟浠諱綍涓涓瓙榪涚▼閫鍑猴紝娌℃湁浠諱綍闄愬埗錛屾鏃秝aitpid
鍜寃ait鐨勪綔鐢ㄤ竴妯′竴鏍楓?銆銆銆銆pid=0鏃訛紝絳夊緟鍚屼竴涓繘紼?/span>
緇勪腑鐨勪換浣曞瓙榪涚▼錛屽鏋滃瓙榪涚▼宸茬粡鍔犲叆浜嗗埆鐨勮繘紼嬬粍錛?/span>
waitpid涓嶄細瀵瑰畠鍋氫換浣曠悊鐫?銆銆銆銆pid<-1鏃訛紝絳夊緟涓涓?/span>
鎸囧畾榪涚▼緇勪腑鐨勪換浣曞瓙榪涚▼錛岃繖涓繘紼嬬粍鐨処D絳変簬pid鐨勭粷瀵?/span>
鍊箋?銆銆
● options 銆銆options鎻愪緵浜嗕竴浜涢澶栫殑閫夐」鏉ユ帶鍒秝aitpid錛?/span>
鐩墠鍦↙inux涓彧鏀寔WNOHANG鍜學UNTRACED涓や釜閫夐」錛?/span>
榪欐槸涓や釜甯告暟錛屽彲浠ョ敤"|"榪愮畻絎︽妸瀹冧滑榪炴帴璧鋒潵浣跨敤錛屾瘮濡傦細
銆銆ret=waitpid(-1,NULL,WNOHANG | WUNTRACED); 銆銆
濡傛灉鎴戜滑涓嶆兂浣跨敤瀹冧滑錛屼篃鍙互鎶妎ptions璁句負0錛屽錛?銆銆
ret=waitpid(-1,NULL,0); 銆銆銆銆濡傛灉浣跨敤浜哤NOHANG鍙傛暟
璋冪敤waitpid錛屽嵆浣挎病鏈夊瓙榪涚▼閫鍑猴紝瀹冧篃浼氱珛鍗寵繑鍥烇紝涓嶄細鍍?/span>
wait閭f牱姘歌繙絳変笅鍘匯?銆銆銆銆鑰學UNTRACED鍙傛暟錛岀敱浜?/span>
娑夊強鍒頒竴浜涜窡韙皟璇曟柟闈㈢殑鐭ヨ瘑錛屽姞涔嬫瀬灝戠敤鍒幫紝榪欓噷灝變笉澶?/span>
璐圭瑪澧ㄤ簡錛屾湁鍏磋叮鐨勮鑰呭彲浠ヨ嚜琛屾煡闃呯浉鍏蟲潗鏂欍傘銆銆銆鐪?/span>
鍒拌繖閲岋紝鑱槑鐨勮鑰呭彲鑳藉凡緇忕湅鍑虹鍊簡--wait涓嶅氨鏄粡榪囧寘瑁?/span>
鐨剋aitpid鍚楋紵娌¢敊錛屽療鐪?lt;鍐呮牳婧愮爜鐩綍>/include/unistd.h鏂?/span>
浠?49-352琛屽氨浼氬彂鐜頒互涓嬬▼搴忔錛氥銆 銆銆static inline
pid_t wait(int * wait_stat) 銆銆{ 銆銆 return waitpid(-
1,wait_stat,0); 銆銆} 銆銆 銆銆榪斿洖鍊煎拰閿欒 銆銆銆銆
waitpid鐨勮繑鍥炲兼瘮wait紼嶅井澶嶆潅涓浜涳紝涓鍏辨湁3縐嶆儏鍐碉細 銆
● 褰撴甯歌繑鍥炵殑鏃跺欙紝waitpid榪斿洖鏀墮泦鍒扮殑瀛愯繘紼嬬殑榪涚▼ID錛?/span>
● 濡傛灉璁劇疆浜嗛夐」WNOHANG錛岃岃皟鐢ㄤ腑waitpid鍙戠幇娌℃湁宸?/span>
閫鍑虹殑瀛愯繘紼嬪彲鏀墮泦錛屽垯榪斿洖0錛?銆銆 銆銆
● 濡傛灉璋冪敤涓嚭閿欙紝鍒欒繑鍥?1錛岃繖鏃秂rrno浼氳璁劇疆鎴愮浉搴旂殑
鍊間互鎸囩ず閿欒鎵鍦紱褰損id鎵鎸囩ず鐨勫瓙榪涚▼涓嶅瓨鍦紝鎴栨榪涚▼瀛?/span>
鍦紝浣嗕笉鏄皟鐢ㄨ繘紼嬬殑瀛愯繘紼嬶紝waitpid灝變細鍑洪敊榪斿洖錛岃繖鏃?/span>
errno琚緗負ECHILD 鍏跺畠錛?璋冪敤 wait錛唚aitpid 鏉ュ鐞嗙粓姝?/span>
鐨勫瓙榪涚▼錛?pid_t wait(int * statloc); pid_t waitpid(pid_t pid,
int *statloc, int options); 涓や釜鍑芥暟閮借繑鍥炰袱涓鹼細鍑芥暟鐨勮繑鍥?/span>
鍊煎拰緇堟鐨勫瓙榪涚▼ID錛岃屽瓙榪涚▼緇堟鐨勭姸鎬佸垯鏄氳繃statloc鎸?/span>
閽堣繑鍥炵殑銆?wait錛唚aitpid 鐨勫尯鍒槸鏄捐屾槗瑙佺殑錛寃ait絳夊緟絎竴
涓粓姝㈢殑瀛愯繘紼嬶紝鑰寃aitpid鍒欏彲浠ユ寚瀹氱瓑寰呯壒瀹氱殑瀛愯繘紼嬨傝繖
鏍風殑鍖哄埆鍙兘浼氬湪涓嬮潰榪欑鎯呭喌鏃惰〃鐜板緱鏇村姞鏄庢樉錛氬綋鍚屾椂鏈?/span>
5涓鎴瘋繛涓婃湇鍔″櫒錛屼篃灝辨槸璇存湁浜斾釜瀛愯繘紼嬪垎鍒搴斾簡5涓
鎴鳳紝姝ゆ椂錛屼簲涓鎴峰嚑涔庡湪鍚屾椂璇鋒眰緇堟錛岃繖鏍蜂竴鏉ワ紝鍑犱箮鍚?/span>
鏃訛紝浜斾釜FIN鍙戝悜鏈嶅姟鍣紝鍚屾牱鐨勶紝浜斾釜SIGCHLD淇″彿鍒拌揪鏈?/span>
鍔″櫒錛岀劧鑰岋紝UNIX鐨勪俊鍙峰線寰鏄笉浼氭帓闃熺殑錛屾樉鐒惰繖鏍蜂竴鏉ワ紝
淇″彿澶勭悊鍑芥暟灝嗗彧浼氭墽琛屼竴嬈★紝孌嬬暀鍓╀綑鍥涗釜瀛愯繘紼嬩綔涓哄兊灝?/span>
榪涚▼椹葷暀鍦ㄥ唴鏍哥┖闂淬傛鏃訛紝姝g‘鐨勮В鍐沖姙娉曟槸鍒╃敤waitpid(-
1, &stat, WNOHANG)闃叉鐣欎笅鍍靛案榪涚▼銆傚叾涓殑pid涓猴紞1琛?/span>
鏄庣瓑寰呯涓涓粓姝㈢殑瀛愯繘紼嬶紝鑰學NOHANG閫夋嫨欏歸氱煡鍐呮牳鍦?/span>
娌℃湁宸茬粓姝㈣繘紼嬮」鏃朵笉瑕侀樆濉炪?/span>
wait錛唚aitpid 鍖哄埆 :
waitpid鎻愪緵浜唚ait鍑芥暟涓嶈兘瀹炵幇鐨?涓姛鑳? waitpid絳夊緟鐗瑰畾鐨?/span>
瀛愯繘紼? 鑰寃ait鍒欒繑鍥炰換涓緇堟鐘舵佺殑瀛愯繘紼? waitpid鎻愪緵浜嗕竴
涓獁ait鐨勯潪闃誨鐗堟湰; waitpid鏀寔浣滀笟鎺у埗(浠UNTRACED閫?/span>
欏?. 鐢ㄤ簬媯鏌ait鍜寃aitpid涓や釜鍑芥暟榪斿洖緇堟鐘舵佺殑瀹? 榪欎袱涓?/span>
鍑芥暟榪斿洖鐨勫瓙榪涚▼鐘舵侀兘淇濆瓨鍦╯tatloc鎸囬拡涓? 鐢ㄤ互涓?涓畯鍙?/span>
浠ユ鏌ヨ鐘舵? WIFEXITED(status): 鑻ヤ負姝e父緇堟, 鍒欎負鐪? 姝?/span>
鏃跺彲鎵ц WEXITSTATUS(status): 鍙栧瓙榪涚▼浼犻佺粰exit鎴朹exit
鍙傛暟鐨勪綆8浣? WIFSIGNALED(status): 鑻ヤ負寮傚父緇堟, 鍒欎負鐪?
姝ゆ椂鍙墽琛?WTERMSIG(status): 鍙栦嬌瀛愯繘紼嬬粓姝㈢殑淇″彿緙栧彿.
WIFSTOPPED(status): 鑻ヤ負褰撳墠鏆傚仠瀛愯繘紼? 鍒欎負鐪? 姝ゆ椂鍙?/span>
鎵ц WSTOPSIG(status): 鍙栦嬌瀛愯繘紼嬫殏鍋滅殑淇″彿緙栧彿


hoshelly 2013-04-13 22:05 鍙戣〃璇勮
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