提升还算明显
Total pre-main time: 2.1 seconds (100.0%)
dylib loading time: 181.83 milliseconds (8.5%)
rebase/binding time: 206.46 milliseconds (9.7%)
ObjC setup time: 774.81 milliseconds (36.5%)
initializer time: 956.20 milliseconds (45.1%)
slowest intializers :
libSystem.B.dylib : 23.68 milliseconds (1.1%)
libMainThreadChecker.dylib : 101.87 milliseconds (4.8%)
libglInterpose.dylib : 333.77 milliseconds (15.7%)
libMTLInterpose.dylib : 93.30 milliseconds (4.4%)
ModelIO : 56.32 milliseconds (2.6%)
ztoExpress : 364.34 milliseconds (17.1%)
采用的思路是， 三方服务， 随用，随注册
这个问题，真恶心，
OC associated objects lazy load
完全就是两份文件，对比着看。
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