How
【Edit Scheme】 - 【Run】 - 【Environment Variables】 增加 DYLD_PRINT_STATISTICS 环境变量
运行后Console输出如下Log
Total pre-main time: 1.2 seconds (100.0%)
dylib loading time: 513.98 milliseconds (40.8%)
rebase/binding time: 130.35 milliseconds (10.3%)
ObjC setup time: 31.21 milliseconds (2.4%)
initializer time: 583.33 milliseconds (46.3%)
slowest intializers :
libSystem.B.dylib : 2.95 milliseconds (0.2%)
libglInterpose.dylib : 337.52 milliseconds (26.8%)
AFNetworking : 28.08 milliseconds (2.2%)
XXX : 234.54 milliseconds (18.6%)
- dylib loading time:动态加载程序查找并读取应用程序使用的依赖动态库
- rebase/binding time:修正调整镜像内的指针(rebase)和设置指向图像外符号的指针(binding)
- ObjC setup time: Objective-C运行时需要进行设置类、类别和选择器注册
- initializer time: 运行初始化程序
To Improve
static_library_target = ['AFNetworking', 'AliyunOSSiOS'];
post_install do |installer|
pods_frameworks_path = "Pods/Target Support Files/Pods-XXX/Pods-XXX-frameworks.sh"
if(File.exist?(pods_frameworks_path))
pods_frameworks_content = File.read(pods_frameworks_path)
end
if static_library_target.include?(target.name)
config.build_settings['MACH_O_TYPE'] = "staticlib"
lib_path = "\"${BUILT_PRODUCTS_DIR}/#{target.name}/"
lib_path = "install_framework #{lib_path}#{target.name}.framework\""
pods_frameworks_content = pods_frameworks_content.gsub("#{lib_path}", "")
end
File.write(pods_frameworks_path, pods_frameworks_content)
end
Why
- 为什么Podfile中指定的三方库为 dynamic library
use_frameworks! tells CocoaPods that you want to use Frameworks instead of Static Libraries. Since Swift does not support Static Libraries you have to use frameworks.
