1.\u4f7f\u7528NSThread
\nNSThread\u63d0\u4f9b\u4e86\u521b\u5efa\u7ebf\u7a0b\u7684\u9014\u5f84\uff0c\u8fd8\u53ef\u4ee5\u63d0\u4f9b\u4e86\u68c0\u6d4b\u5f53\u524d\u7ebf\u7a0b\u662f\u5426\u662f\u4e3b\u7ebf\u7a0b\u7684\u65b9\u6cd5\u3002 \u4f7f\u7528NSThread\u521b\u5efa\u4e00\u4e2a\u65b0\u7684\u7ebf\u7a0b\u6709\u4e24\u79cd\u65b9\u5f0f\uff1a
\n1.\u521b\u5efa\u4e00\u4e2aNSThread\u7684\u5bf9\u8c61\uff0c\u8c03\u7528\u5176start\u65b9\u6cd5\u3002\u5bf9\u4e8e\u8fd9\u79cd\u65b9\u5f0f\u7684NSThread\u5bf9\u8c61\u7684\u521b\u5efa\uff0c\u53ef\u4ee5\u4f7f\u7528\u4e00\u4e2a\u76ee\u6807\u5bf9\u8c61\u7684\u65b9\u6cd5\u521d\u59cb\u5316\u4e00\u4e2aNSThread\u5bf9\u8c61\uff0c\u6216\u8005\u521b\u5efa\u4e00\u4e2a\u7ee7\u627fNSThread\u7c7b\u7684\u5b50\u7c7b\uff0c\u5b9e\u73b0\u5176main\u65b9\u6cd5\uff0c\u7136\u540e\u5728\u76f4\u63a5\u521b\u5efa\u8fd9\u4e2a\u5b50\u7c7b\u7684\u5bf9\u8c61\u3002
\n2.\u4f7f\u7528 detachNewThreadSelector:toTarget:withObject:\u8fd9\u4e2a\u7c7b\u65b9\u6cd5\u521b\u5efa\u4e00\u4e2a\u7ebf\u7a0b\uff0c\u8fd9\u4e2a\u6bd4\u8f83\u76f4\u63a5\u4e86\uff0c\u76f4\u63a5\u4f7f\u7528\u76ee\u6807\u5bf9\u8c61\u7684\u65b9\u6cd5\u4f5c\u4e3a\u7ebf\u7a0b\u542f\u52a8\u5165\u53e3\u3002
\n2.\u4f7f\u7528NSObject
\n\u5176\u5b9eNSObject\u76f4\u63a5\u5c31\u52a0\u5165\u4e86\u591a\u7ebf\u7a0b\u7684\u652f\u6301\uff0c\u5141\u8bb8\u5bf9\u8c61\u7684\u67d0\u4e2a\u65b9\u6cd5\u5728\u540e\u53f0\u8fd0\u884c\u3002\u5982:
\n[myObj performSelectorInBackground:@selector(doSomething) withObject:nil];
\n3.POSIX Thread
\n\u7531\u4e8eMac\u548ciOS\u90fd\u662f\u57fa\u4e8eDarwin\u7cfb\u7edf\uff0cDarwin\u7cfb\u7edf\u7684XUN\u5185\u6838\uff0c\u662f\u57fa\u4e8eMach\u548cBSD\u7684\uff0c\u7ee7\u627f\u4e86BSD\u7684POSIX\u63a5\u53e3\uff0c\u6240\u4ee5\u53ef\u4ee5\u76f4\u63a5\u4f7f\u7528POSIX\u7ebf\u7a0b\u7684\u76f8\u5173\u63a5\u53e3\u6765\u4f7f\u7528\u7ebf\u7a0b\u3002
\n\u521b\u5efa\u7ebf\u7a0b\u7684\u63a5\u53e3\u4e3a pthread_create\uff0c\u5f53\u7136\u5728\u521b\u5efa\u4e4b\u524d\u53ef\u4ee5\u901a\u8fc7\u76f8\u5173\u51fd\u6570\u8bbe\u7f6e\u597d\u7ebf\u7a0b\u7684\u5c5e\u6027\u3002\u4ee5\u4e0b\u4e3aPOSIX\u7ebf\u7a0b\u4f7f\u7528\u7b80\u5355\u7684\u4f8b\u5b50\u3002<\/p>\n
\r\n#include <stdio.h>\r\n#include <pthread.h>\r\n#include <unistd.h>\r\n\r\nvoid *pthreadRoutine(void *);\r\n\r\nint main (int argc, const char * argv[])\r\n{\r\n pthread_attr_t attr;\r\n pthread_t pthreadID;\r\n int returnVal;\r\n \r\n returnVal = pthread_attr_init(&attr);\r\n returnVal = pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);\r\n int threadError = pthread_create(&pthreadID, &attr, &pthreadRoutine, NULL);\r\n returnVal = pthread_attr_destroy(&attr);\r\n \r\n if (threadError != 0)\r\n {\r\n \/\/ Report an error.\r\n }\r\n \r\n sleep(10);\r\n \r\n return 0;\r\n}\r\n\r\nvoid *pthreadRoutine(void *data){\r\n int count = 0;\r\n while (1) {\r\n printf(\"count = %d\\n\",count++);\r\n sleep(1);\r\n }\r\n return NULL;\r\n}\r\n<\/pre>\n\u591a\u7ebf\u7a0b\u8fdb\u9636
\nNSOperation&NSOperationQueue
\n\u5f88\u591a\u65f6\u5019\u6211\u4eec\u4f7f\u7528\u591a\u7ebf\u7a0b\uff0c\u9700\u8981\u63a7\u5236\u7ebf\u7a0b\u7684\u5e76\u53d1\u6570\uff0c\u6bd5\u7adf\u7ebf\u7a0b\u4e5f\u662f\u6d88\u8017\u7cfb\u7edf\u8d44\u6e90\u7684\uff0c\u5f53\u7a0b\u5e8f\u4e2d\u540c\u65f6\u8fd0\u884c\u7684\u7ebf\u7a0b\u8fc7\u591a\u65f6\uff0c\u7cfb\u7edf\u5fc5\u7136\u53d8\u6162\u3002 \u6240\u4ee5\u5f88\u591a\u65f6\u5019\u6211\u4eec\u4f1a\u63a7\u5236\u540c\u65f6\u8fd0\u884c\u7ebf\u7a0b\u7684\u6570\u76ee\u3002
\nNSOperation\u53ef\u4ee5\u5c01\u88c5\u6211\u4eec\u7684\u64cd\u4f5c\uff0c\u7136\u540e\u5c06\u521b\u5efa\u597d\u7684NSOperation\u5bf9\u8c61\u653e\u5230NSOperationQueue\u4e2d\uff0cOperationQueue\u4fbf\u5f00\u59cb\u542f\u52a8\u65b0\u7684\u7ebf\u7a0b\u53bb\u6267\u884c\u961f\u5217\u4e2d\u7684\u64cd\u4f5c\uff0cOperationQueue\u7684\u5e76\u53d1\u5ea6\u662f\u53ef\u4ee5\u901a\u8fc7\u5982\u4e0b\u65b9\u5f0f\u8fdb\u884c\u8bbe\u7f6e:
\n– (void)setMaxConcurrentOperationCount:(NSInteger)count
\nGCD
\nGCD\u662fGrand Central Dispatch\u7684\u7f29\u5199\uff0c\u662f\u4e00\u7cfb\u5217\u7684BSD\u5c42\u9762\u7684\u63a5\u53e3\uff0c\u5728Mac 10.6 \u548ciOS4.0\u4ee5\u540e\u624d\u5f15\u5165\u7684\uff0c\u4e14\u73b0\u5728NSOperation\u548cNSOperationQueue\u7684\u591a\u7ebf\u7a0b\u7684\u5b9e\u73b0\u5c31\u662f\u57fa\u4e8eGCD\u7684\u3002\u76ee\u524d\u8fd9\u4e2a\u7279\u6027\u4e5f\u88ab\u79fb\u690d\u5230FreeBSD\u4e0a\u4e86\uff0c\u53ef\u4ee5\u67e5\u770blibdispatch\u8fd9\u4e2a\u5f00\u6e90\u9879\u76ee\u3002
\n\u6bd4\u5982\u4e00\u4e2a\u5728UIImageView\u4e2d\u663e\u793a\u4e00\u4e2a\u6bd4\u8f83\u5927\u7684\u56fe\u7247<\/p>\n
\r\ndispatch_queue_t imageDownloadQueue = dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0); \r\ndispatch_async(imageDownloadQueue, ^{\r\n NSURL *imageURL = [NSURL URLWithString:@\"http:\/\/test.com\/test.png\"];\r\n NSData *imageData = [NSData dataWithContentsOfURL:imageURL];\r\n UIImage *image = [UIImage imageWithData:imageData];\r\n dispatch_async(dispatch_get_main_queue(), ^{\r\n [imageView setImage:image];\/\/UIKit\u5fc5\u987b\u5728\u4e3b\u7ebf\u7a0b\u6267\u884c\r\n });\r\n });\r\n<\/pre>\n\u5f53\u7136\uff0cGCD\u9664\u4e86\u5904\u7406\u591a\u7ebf\u7a0b\u5916\u8fd8\u6709\u5f88\u591a\u975e\u5e38\u597d\u7684\u529f\u80fd\uff0c\u5176\u5efa\u7acb\u5728\u5f3a\u5927\u7684kqueue\u4e4b\u4e0a\uff0c\u6548\u7387\u4e5f\u80fd\u591f\u5f97\u5230\u4fdd\u969c\u3002
\n\u56db.\u7ebf\u7a0b\u95f4\u901a\u4fe1
\n\u7ebf\u7a0b\u95f4\u901a\u4fe1\u548c\u8fdb\u7a0b\u95f4\u901a\u4fe1\u4ece\u672c\u8d28\u4e0a\u8bb2\u662f\u76f8\u4f3c\u7684\u3002\u7ebf\u7a0b\u95f4\u901a\u4fe1\u5c31\u662f\u5728\u8fdb\u7a0b\u5185\u7684\u4e24\u4e2a\u6267\u884c\u6d41\u4e4b\u95f4\u8fdb\u884c\u6570\u636e\u7684\u4f20\u9012\uff0c\u5c31\u50cf\u4e24\u6761\u5e76\u884c\u7684\u6cb3\u6d41\u4e4b\u95f4\u6316\u51fa\u4e86\u4e00\u9053\u5355\u5411\u6d41\u52a8\u957f\u6c9f\uff0c\u4f7f\u5f97\u4e00\u6761\u6cb3\u6d41\u4e2d\u7684\u6c34\u53ef\u4ee5\u6d41\u5165\u53e6\u4e00\u6761\u6cb3\u6d41\uff0c\u7269\u8d28\u5f97\u5230\u4e86\u4f20\u9012\u3002
\n1.performSelect On The Thread
\n\u6846\u67b6\u4e3a\u6211\u4eec\u63d0\u4f9b\u4e86\u5f3a\u5236\u5728\u67d0\u4e2a\u7ebf\u7a0b\u4e2d\u6267\u884c\u65b9\u6cd5\u7684\u9014\u5f84,\u5982\u679c\u4e24\u4e2a\u975e\u4e3b\u7ebf\u7a0b\u7684\u7ebf\u7a0b\u9700\u8981\u76f8\u4e92\u95f4\u901a\u4fe1\uff0c\u53ef\u4ee5\u5148\u5c06\u81ea\u5df1\u7684\u5f53\u524d\u7ebf\u7a0b\u5bf9\u8c61\u6ce8\u518c\u5230\u67d0\u4e2a\u5168\u5c40\u7684\u5bf9\u8c61\u4e2d\u53bb\uff0c\u8fd9\u6837\u76f8\u4e92\u4e4b\u95f4\u5c31\u53ef\u4ee5\u83b7\u53d6\u5bf9\u65b9\u7684\u7ebf\u7a0b\u5bf9\u8c61\uff0c\u7136\u540e\u5c31\u53ef\u4ee5\u4f7f\u7528\u4e0b\u9762\u7684\u65b9\u6cd5\u8fdb\u884c\u7ebf\u7a0b\u95f4\u7684\u901a\u4fe1\u4e86\uff0c\u7531\u4e8e\u4e3b\u7ebf\u7a0b\u6bd4\u8f83\u7279\u6b8a\uff0c\u6240\u4ee5\u6846\u67b6\u76f4\u63a5\u63d0\u4f9b\u4e86\u5728\u51fa\u7ebf\u7a0b\u6267\u884c\u7684\u65b9\u6cd5\u3002<\/p>\n
\r\n@interface NSObject (NSThreadPerformAdditions)\r\n\r\n- (void)performSelectorOnMainThread:(SEL)aSelector withObject:(id)arg waitUntilDone:(BOOL)wait modes:(NSArray *)array;\r\n- (void)performSelectorOnMainThread:(SEL)aSelector withObject:(id)arg waitUntilDone:(BOOL)wait;\r\n\/\/ equivalent to the first method with kCFRunLoopCommonModes\r\n\r\n- (void)performSelector:(SEL)aSelector onThread:(NSThread *)thr withObject:(id)arg waitUntilDone:(BOOL)wait modes:(NSArray *)array NS_AVAILABLE(10_5, 2_0);\r\n- (void)performSelector:(SEL)aSelector onThread:(NSThread *)thr withObject:(id)arg waitUntilDone:(BOOL)wait NS_AVAILABLE(10_5, 2_0);\r\n\/\/ equivalent to the first method with kCFRunLoopCommonModes\r\n ...\r\n@end\r\n<\/pre>\n2.Mach Port
\n\u5728\u82f9\u679c\u7684Thread Programming Guide\u7684Run Pool\u4e00\u8282\u7684Configuring a Port-Based Input Source \u8fd9\u4e00\u6bb5\u4e2d\u5c31\u6709\u4f7f\u7528Mach Port\u8fdb\u884c\u7ebf\u7a0b\u95f4\u901a\u4fe1\u7684\u4f8b\u5b50\u3002 \u5176\u5b9e\u8d28\u5c31\u662f\u7236\u7ebf\u7a0b\u521b\u5efa\u4e00\u4e2aNSMachPort\u5bf9\u8c61\uff0c\u5728\u521b\u5efa\u5b50\u7ebf\u7a0b\u7684\u65f6\u5019\u4ee5\u53c2\u6570\u7684\u65b9\u5f0f\u5c06\u5176\u4f20\u9012\u7ed9\u5b50\u7ebf\u7a0b\uff0c\u8fd9\u6837\u5b50\u7ebf\u7a0b\u4e2d\u5c31\u53ef\u4ee5\u5411\u8fd9\u4e2a\u4f20\u8fc7\u6765\u7684NSMachPort\u5bf9\u8c61\u53d1\u9001\u6d88\u606f\uff0c\u5982\u679c\u60f3\u8ba9\u7236\u7ebf\u7a0b\u4e5f\u53ef\u4ee5\u5411\u5b50\u7ebf\u7a0b\u53d1\u6d88\u606f\u7684\u8bdd\uff0c\u90a3\u4e48\u5b50\u7ebf\u7a0b\u53ef\u4ee5\u5148\u5411\u7236\u7ebf\u7a0b\u53d1\u4e2a\u7279\u6b8a\u7684\u6d88\u606f\uff0c\u4f20\u8fc7\u6765\u7684\u662f\u81ea\u5df1\u521b\u5efa\u7684\u53e6\u4e00\u4e2aNSMachPort\u5bf9\u8c61\uff0c\u8fd9\u6837\u7236\u7ebf\u7a0b\u4fbf\u6301\u6709\u4e86\u5b50\u7ebf\u7a0b\u521b\u5efa\u7684port\u5bf9\u8c61\u4e86\uff0c\u53ef\u4ee5\u5411\u8fd9\u4e2a\u5b50\u7ebf\u7a0b\u7684port\u5bf9\u8c61\u53d1\u9001\u6d88\u606f\u4e86\u3002
\n\u5f53\u7136\u5404\u81ea\u7684port\u5bf9\u8c61\u9700\u8981\u8bbe\u7f6edelegate\u4ee5\u53caschdule\u5230\u81ea\u5df1\u6240\u5728\u7ebf\u7a0b\u7684RunLoop\u4e2d\uff0c\u8fd9\u6837\u6765\u4e86\u6d88\u606f\u4e4b\u540e\uff0c\u5904\u7406port\u6d88\u606f\u7684delegate\u65b9\u6cd5\u4f1a\u88ab\u8c03\u7528\uff0c\u4f60\u5c31\u53ef\u4ee5\u81ea\u5df1\u5904\u7406\u6d88\u606f\u4e86\u3002
\n\u4e94.RunLoop
\nRunLoop\u4ece\u5b57\u9762\u4e0a\u770b\u662f\u8fd0\u884c\u5faa\u73af\u7684\u610f\u601d\uff0c\u8fd9\u4e00\u70b9\u4e5f\u4e0d\u9519\uff0c\u5b83\u786e\u5b9e\u5c31\u662f\u4e00\u4e2a\u5faa\u73af\u7684\u6982\u5ff5\uff0c\u6216\u8005\u51c6\u786e\u7684\u8bf4\u662f\u7ebf\u7a0b\u4e2d\u7684\u5faa\u73af\u3002 \u672c\u6587\u4e00\u5f00\u59cb\u5c31\u63d0\u5230\u6709\u4e9b\u7a0b\u5e8f\u662f\u4e00\u4e2a\u5708\uff0c\u8fd9\u4e2a\u5708\u672c\u8d28\u4e0a\u5c31\u662f\u8fd9\u91cc\u7684\u6240\u8c13\u7684RunLoop\uff0c\u5c31\u662f\u4e00\u4e2a\u5faa\u73af\uff0c\u53ea\u662f\u8fd9\u4e2a\u5faa\u73af\u91cc\u52a0\u5165\u5f88\u591a\u7279\u6027\u3002
\n\u9996\u5148\u5faa\u73af\u4f53\u7684\u5f00\u59cb\u9700\u8981\u68c0\u6d4b\u662f\u5426\u6709\u9700\u8981\u5904\u7406\u7684\u4e8b\u4ef6\uff0c\u5982\u679c\u6709\u5219\u53bb\u5904\u7406\uff0c\u5982\u679c\u6ca1\u6709\u5219\u8fdb\u5165\u7761\u7720\u4ee5\u8282\u7701CPU\u65f6\u95f4\u3002 \u6240\u4ee5\u91cd\u70b9\u4fbf\u662f\u8fd9\u4e2a\u9700\u8981\u5904\u7406\u7684\u4e8b\u4ef6\uff0c\u5728RunLoop\u4e2d\uff0c\u9700\u8981\u5904\u7406\u7684\u4e8b\u4ef6\u5206\u4e24\u7c7b\uff0c\u4e00\u79cd\u662f\u8f93\u5165\u6e90\uff0c\u4e00\u79cd\u662f\u5b9a\u65f6\u5668\uff0c\u5b9a\u65f6\u5668\u597d\u7406\u89e3\u5c31\u662f\u90a3\u4e9b\u9700\u8981\u5b9a\u65f6\u6267\u884c\u7684\u64cd\u4f5c\uff0c\u8f93\u5165\u6e90\u5206\u4e09\u7c7b\uff1aperformSelector\u6e90\uff0c\u57fa\u4e8e\u7aef\u53e3\uff08Mach port\uff09\u7684\u6e90\uff0c\u4ee5\u53ca\u81ea\u5b9a\u4e49\u7684\u6e90\u3002\u7f16\u7a0b\u7684\u65f6\u5019\u53ef\u4ee5\u6dfb\u52a0\u81ea\u5df1\u7684\u6e90\u3002RunLoop\u8fd8\u6709\u4e00\u4e2a\u89c2\u5bdf\u8005Observer\u7684\u6982\u5ff5\uff0c\u53ef\u4ee5\u5f80RunLoop\u4e2d\u52a0\u5165\u81ea\u5df1\u7684\u89c2\u5bdf\u8005\u4ee5\u4fbf\u76d1\u63a7\u7740RunLoop\u7684\u8fd0\u884c\u8fc7\u7a0b\uff0cCFRunLoop.h\u4e2d\u5b9a\u4e49\u4e86\u6240\u6709\u89c2\u5bdf\u8005\u7684\u7c7b\u578b:<\/p>\n
\r\nenum CFRunLoopActivity {\r\n kCFRunLoopEntry = (1 << 0),\r\n kCFRunLoopBeforeTimers = (1 << 1),\r\n kCFRunLoopBeforeSources = (1 << 2),\r\n kCFRunLoopBeforeWaiting = (1 << 5),\r\n kCFRunLoopAfterWaiting = (1 << 6),\r\n kCFRunLoopExit = (1 << 7),\r\n kCFRunLoopAllActivities = 0x0FFFFFFFU\r\n};\r\ntypedef enum CFRunLoopActivity CFRunLoopActivity;\r\n<\/pre>\n\u5982\u679c\u4f60\u4f7f\u7528\u8fc7select\u7cfb\u7edf\u8c03\u7528\u5199\u8fc7\u7a0b\u5e8f\u4f60\u4fbf\u53ef\u4ee5\u5feb\u901f\u7684\u7406\u89e3runloop\u4e8b\u4ef6\u6e90\u7684\u6982\u5ff5\uff0c\u672c\u8d28\u4e0a\u8bb2\u4e8b\u4ef6\u6e90\u7684\u673a\u5236\u548cselect\u4e00\u6837\u662f\u4e00\u79cd\u591a\u8def\u590d\u7528IO\u7684\u5b9e\u73b0\uff0c\u5728\u4e00\u4e2a\u7ebf\u7a0b\u4e2d\u6211\u4eec\u9700\u8981\u505a\u7684\u4e8b\u60c5\u5e76\u4e0d\u5355\u4e00\uff0c\u5982\u9700\u8981\u5904\u7406\u5b9a\u65f6\u949f\u4e8b\u4ef6\uff0c\u9700\u8981\u5904\u7406\u7528\u6237\u7684\u89e6\u63a7\u4e8b\u4ef6\uff0c\u9700\u8981\u63a5\u53d7\u7f51\u7edc\u8fdc\u7aef\u53d1\u8fc7\u6765\u7684\u6570\u636e\uff0c\u5c06\u8fd9\u4e9b\u9700\u8981\u505a\u7684\u4e8b\u60c5\u7edf\u7edf\u6ce8\u518c\u5230\u4e8b\u4ef6\u6e90\u4e2d\uff0c\u6bcf\u4e00\u6b21\u5faa\u73af\u7684\u5f00\u59cb\u4fbf\u53bb\u68c0\u67e5\u8fd9\u4e9b\u4e8b\u4ef6\u6e90\u662f\u5426\u6709\u9700\u8981\u5904\u7406\u7684\u6570\u636e\uff0c\u6709\u7684\u8bdd\u5219\u53bb\u5904\u7406\u3002 \u62ff\u5177\u4f53\u7684\u5e94\u7528\u4e3e\u4e2a\u4f8b\u5b50\uff0cNSURLConnection\u7f51\u7edc\u6570\u636e\u8bf7\u6c42\uff0c\u9ed8\u8ba4\u662f\u5f02\u6b65\u7684\u65b9\u5f0f\uff0c\u5176\u5b9e\u73b0\u539f\u7406\u5c31\u662f\u521b\u5efa\u4e4b\u540e\u5c06\u5176\u4f5c\u4e3a\u4e8b\u4ef6\u6e90\u52a0\u5165\u5230\u5f53\u524d\u7684RunLoop\uff0c\u800c\u7b49\u5f85\u7f51\u7edc\u54cd\u5e94\u4ee5\u53ca\u7f51\u7edc\u6570\u636e\u63a5\u53d7\u7684\u8fc7\u7a0b\u5219\u5728\u4e00\u4e2a\u65b0\u521b\u5efa\u7684\u72ec\u7acb\u7684\u7ebf\u7a0b\u4e2d\u5b8c\u6210\uff0c\u5f53\u8fd9\u4e2a\u7ebf\u7a0b\u5904\u7406\u5230\u67d0\u4e2a\u9636\u6bb5\u7684\u65f6\u5019\u6bd4\u5982\u5f97\u5230\u5bf9\u65b9\u7684\u54cd\u5e94\u6216\u8005\u63a5\u53d7\u5b8c\u4e86\u7f51\u7edc\u6570\u636e\u4e4b\u540e\u4fbf\u901a\u77e5\u4e4b\u524d\u7684\u7ebf\u7a0b\u53bb\u6267\u884c\u5176\u76f8\u5173\u7684delegate\u65b9\u6cd5\u3002\u6240\u4ee5\u5728Cocoa\u4e2d\u7ecf\u5e38\u770b\u5230scheduleInRunLoop:forMode:\u8fd9\u6837\u7684\u65b9\u6cd5\uff0c\u8fd9\u4e2a\u4fbf\u662f\u5c06\u5176\u52a0\u5165\u5230\u4e8b\u4ef6\u6e90\u4e2d\uff0c\u5f53\u68c0\u6d4b\u5230\u67d0\u4e2a\u4e8b\u4ef6\u53d1\u751f\u7684\u65f6\u5019\uff0c\u76f8\u5173\u7684delegate\u65b9\u6cd5\u4fbf\u88ab\u8c03\u7528\u3002\u5bf9\u4e8eCoreFoundation\u8fd9\u4e00\u5c42\u800c\u8a00\uff0c\u901a\u5e38\u7684\u6a21\u5f0f\u662f\u521b\u5efa\u8f93\u5165\u6e90\uff0c\u7136\u540e\u5c06\u8f93\u5165\u6e90\u901a\u8fc7CFRunLoopAddSource\u51fd\u6570\u52a0\u5165\u5230RunLoop\u4e2d\uff0c\u76f8\u5173\u4e8b\u4ef6\u53d1\u751f\u540e\uff0c\u76f8\u5173\u7684\u56de\u8c03\u51fd\u6570\u4f1a\u88ab\u8c03\u7528\u3002\u5982CFSocket\u7684\u4f7f\u7528\u3002 \u53e6\u5916RunLoop\u4e2d\u8fd8\u6709\u4e00\u4e2a\u8fd0\u884c\u6a21\u5f0f\u7684\u6982\u5ff5\uff0c\u6bcf\u4e00\u4e2a\u8fd0\u884c\u5faa\u73af\u5fc5\u7136\u8fd0\u884c\u5728\u67d0\u4e2a\u6a21\u5f0f\u4e0b\uff0c\u800c\u6a21\u5f0f\u7684\u5b58\u5728\u662f\u4e3a\u4e86\u8fc7\u6ee4\u4e8b\u4ef6\u6e90\u548c\u89c2\u5bdf\u8005\u7684\uff0c\u53ea\u6709\u90a3\u4e9b\u548c\u5f53\u524dRunLoop\u8fd0\u884c\u6a21\u5f0f\u4e00\u81f4\u7684\u4e8b\u4ef6\u6e90\u548c\u89c2\u5bdf\u8005\u624d\u4f1a\u88ab\u6fc0\u6d3b\u3002
\n\u6bcf\u4e00\u4e2a\u7ebf\u7a0b\u90fd\u6709\u5176\u5bf9\u5e94\u7684RunLoop\uff0c\u4f46\u662f\u9ed8\u8ba4\u975e\u4e3b\u7ebf\u7a0b\u7684RunLoop\u662f\u6ca1\u6709\u8fd0\u884c\u7684\uff0c\u9700\u8981\u4e3aRunLoop\u6dfb\u52a0\u81f3\u5c11\u4e00\u4e2a\u4e8b\u4ef6\u6e90\uff0c\u7136\u540e\u53bbrun\u5b83\u3002\u4e00\u822c\u60c5\u51b5\u4e0b\u6211\u4eec\u662f\u6ca1\u6709\u5fc5\u8981\u53bb\u542f\u7528\u7ebf\u7a0b\u7684RunLoop\u7684\uff0c\u9664\u975e\u4f60\u5728\u4e00\u4e2a\u5355\u72ec\u7684\u7ebf\u7a0b\u4e2d\u9700\u8981\u957f\u4e45\u7684\u68c0\u6d4b\u67d0\u4e2a\u4e8b\u4ef6\u3002<\/p>\n
\u8f6c\u81ea http:\/\/geeklu.com\/2012\/02\/thread\/<\/p>\n","protected":false},"excerpt":{"rendered":"
1.\u4f7f\u7528NSThread NSThread\u63d0\u4f9b\u4e86\u521b\u5efa\u7ebf\u7a0b\u7684\u9014\u5f84\uff0c\u8fd8\u53ef\u4ee5\u63d0\u4f9b\u4e86\u68c0\u6d4b …<\/p>\n