鏆ㄥ崡澶у鏈瀹為獙鎶ュ憡涓撶敤绾?/p>
涓�銆佸疄楠岀洰鐨?/p>
閫氳繃杩涚▼鐨勫垱寤恒�?/p>
鎾ら攢鍜岃繍琛屽姞娣卞杩涚▼姒傚康鍜岃繘绋嬪苟鍙戞墽琛岀殑鐞嗚В锛?/p>
鏄庣‘杩涚▼
涓庣▼搴忎箣闂寸殑鍖哄埆銆?/p>
浜屻�佸疄楠岀幆澧冨強璁惧
锛堜竴锛夊疄楠屽鍚嶇О锛氳绠楁満瀹為獙瀹?/p>
锛堜簩锛変富瑕佷华鍣ㄨ澶囷細
PC
鏈恒�?/p>
Linux
鎿嶄綔绯荤粺鐜
涓夈�佸疄楠屽唴瀹?/p>
锛?/p>
1
锛夌紪鍐欎竴娈电▼搴忥紝浣跨敤绯荤粺璋冪敤
fork()
鏉ュ垱寤轰袱涓瓙杩涚▼锛屽苟鐢辩埗杩涚▼閲嶅
鏄剧ず瀛楃鏌愬瓧绗︿覆鍜岃嚜宸辩殑鏍囪瘑鏁帮紝
鑰屽瓙杩涚▼鍒欓噸澶嶆樉绀烘煇瀛楃涓插拰鑷繁鐨勬爣璇?/p>
鏁般�?/p>
锛?/p>
2
锛夌紪鍐欎竴娈电▼搴忥紝浣跨敤绯荤粺璋冪敤
fork()
鏉ュ垱寤轰竴涓瓙杩涚▼銆傚瓙杩涚▼閫氳繃绯荤粺璋冪敤
exec()
鏇存崲鑷繁鐨勬墽琛屼唬鐮侊紝鏄剧ず鏂扮殑浠ｇ爜鍚庯紝璋冪敤
exit()
缁撴潫銆傝�岀埗杩涚▼鍒欒皟鐢?/p>
waitpid()
绛夊緟瀛愯繘绋嬬粨鏉燂紝
骞跺湪瀛愯繘绋嬬粨鏉熷悗鏄剧ず瀛愯繘绋嬬殑鏍囪瘑绗︼紝鐒跺悗姝ｅ父缁撴潫銆?/p>
鍥涖�佸疄楠岃皟璇曞垎鏋?/p>
1
銆佸疄楠屽嚱鏁拌鏄?/p>
锛?/p>
1
锛?/p>
fork
锛堬級鍒涘缓鏂拌繘绋?/p>
瑕佸垱寤轰竴涓繘绋嬶紝
鏈�鍩烘湰鐨勭郴缁熻皟鐢ㄦ槸
fork
銆?/p>
绯荤粺璋冪敤
fork
鐢ㄤ簬娲剧敓涓�涓繘绋嬶紝
澶存枃浠讹細
#include <unistd.h>
鍑芥暟瀹氫箟
锛?/p>
int fork( void );
杩斿洖鍊硷細
瀛愯繘绋嬩腑杩斿洖
0
锛岀埗杩涚▼涓繑鍥炲瓙杩涚▼
ID
锛屽嚭閿欒繑鍥?/p>
-1
鍑芥暟璇存槑锛?/p>
涓�涓幇鏈夎繘绋嬪彲浠ヨ皟鐢?/p>
fork
鍑芥暟鍒涘缓涓�涓柊杩涚▼銆傜敱
fork
鍒涘缓鐨勬柊
杩涚▼琚О涓哄瓙杩涚▼锛?/p>
child process
锛?/p>
銆?/p>
fork
鍑芥暟琚皟鐢ㄤ竴娆′絾杩斿洖涓ゆ銆備袱娆¤繑鍥?/p>
鐨勫敮涓�鍖哄埆鏄瓙杩涚▼涓繑鍥?/p>
0
鍊艰�岀埗杩涚▼涓繑鍥炲瓙杩涚▼
ID
銆傚瓙杩涚▼鏄埗杩涚▼鐨?/p>
鍓湰锛屽畠灏嗚幏寰楃埗杩涚▼鏁版嵁绌洪棿銆佸爢銆佹爤绛夎祫婧愮殑鍓湰銆傛敞鎰忥紝瀛愯繘绋嬫寔鏈夌殑鏄?/p>
涓婅堪瀛樺偍绌洪棿鐨?/p>
鈥?/p>
鍓湰
鈥?/p>
锛?/p>
杩欐剰鍛崇潃鐖跺瓙杩涚▼闂翠笉鍏变韩杩欎簺瀛樺偍绌洪棿锛?/p>
瀹冧滑涔嬮棿鍏?/p>
浜殑瀛樺偍绌洪棿鍙湁浠ｇ爜娈点�?/p>
锛?/p>
2
锛?/p>
exec
鍑芥暟鏃?/p>
澶存枃浠讹細
#include <unistd.h>
鍑芥暟鏃忥細
int execl(const char *path, const char *arg, ...);
int execlp(const char *file, const char *arg, ...);