[linker] Ensure we can remove NSUrlSessionHandler if unused #7151
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Moving `NSUrlSessionHandler` into the platform assemblies (e.g.
Xamarin.iOS.dll) instead of System.Net.Http.dll was not optimal as it
prevented the linker to remove it when the application did not use it.
This shows a lot in an "helloworld" type of application (see below)
but in real life most of the removed code gets used by something else
(and is included.
```
Directories / Files helloworld-d16-4.app helloworld-fixed.app diff %
./
AppIcon60x60@2x.png 2,632 2,632 0 0.00 %
AppIcon76x76@2x~ipad.png 3,125 3,125 0 0.00 %
archived-expanded-entitlements.xcent 181 181 0 0.00 %
Assets.car 75,688 75,688 0 0.00 %
embedded.mobileprovision 8,456 8,456 0 0.00 %
helloworld 4,700,256 3,915,936 -784,320 -16.69 %
helloworld.aotdata.arm64 1,448 1,432 -16 -1.10 %
helloworld.exe 6,144 6,144 0 0.00 %
Info.plist 1,712 1,712 0 0.00 %
mscorlib.aotdata.arm64 406,080 364,104 -41,976 -10.34 %
mscorlib.dll 561,664 501,760 -59,904 -10.67 %
NOTICE 159 159 0 0.00 %
PkgInfo 8 8 0 0.00 %
System.aotdata.arm64 17,008 936 -16,072 -94.50 %
System.Core.aotdata.arm64 2,432 0 -2,432 -100.00 %
System.Core.dll 4,608 0 -4,608 -100.00 %
System.dll 32,768 5,120 -27,648 -84.38 %
System.Net.Http.aotdata.arm64 31,648 0 -31,648 -100.00 %
System.Net.Http.dll 29,184 0 -29,184 -100.00 %
Xamarin.iOS.aotdata.arm64 62,544 33,464 -29,080 -46.50 %
Xamarin.iOS.dll 92,672 53,248 -39,424 -42.54 %
./_CodeSignature
CodeResources 7,575 6,655 -920 -12.15 %
./LaunchScreen.storyboardc
01J-lp-oVM-view-Ze5-6b-2t3.nib 1,831 1,835 4 0.22 %
Info.plist 258 258 0 0.00 %
UIViewController-01J-lp-oVM.nib 896 896 0 0.00 %
./Main.storyboardc
BYZ-38-t0r-view-8bC-Xf-vdC.nib 1,836 1,832 -4 -0.22 %
Info.plist 258 258 0 0.00 %
UIViewController-BYZ-38-t0r.nib 916 916 0 0.00 %
Statistics
Native subtotal 4,700,256 3,915,936 -784,320 -16.69 %
Executable 4,700,256 3,915,936 -784,320 -16.69 %
AOT data *.aotdata 0 0 0 -
Managed *.dll/exe 727,040 566,272 -160,768 -22.11 %
TOTAL 6,053,987 4,986,755 -1,067,232 -17.63 %
```
dalexsoto
approved these changes
Oct 1, 2019
|
Build failure Test results12 tests failed, 78 tests passed.Failed tests
|
|
👍 but we need to make sure that UrlProtocolTest.RegistrarTest : DidReceiveData is not failing due to the change. First time I see this test fail. |
mandel-macaque
approved these changes
Oct 2, 2019
rolfbjarne
approved these changes
Oct 2, 2019
|
Failures are fixed by #7154 and unrelated to the PR |
|
@monojenkins backport to d16-4 |
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Moving
NSUrlSessionHandlerinto the platform assemblies (e.g.Xamarin.iOS.dll) instead of System.Net.Http.dll was not optimal as it
prevented the linker to remove it when the application did not use it.
This shows a lot in an "helloworld" type of application (see below)
but in real life most of the removed code gets used by something else
(and is included.