From 3fcd20fb5aaa920afd8ab8fccaccb5ea7371b02b Mon Sep 17 00:00:00 2001 From: Jon Skeet Date: Fri, 8 Jul 2016 14:38:39 +0100 Subject: Overhaul how the native extension is found, loaded and used The goal of this is to fix #7230. The changes here are: - The layout in the nuget package; the files are now in `/runtimes/{os}/native/{library}` - The filename of each library, which now includes the architecture, e.g `grpc_csharp_ext.x64.dll` - The targets file used to copy those files in msbuild-based projects; note that we now don't build up a folder structure. - The way the functions are found Before this change, on Linux and OSX we used to find library symbols manually, and use DllImport on Windows. With this change, the name of the library file changes based on architecture, so `DllImport` doesn't work. Instead, we have to use `GetProcAddress` to fetch the function. This is further convoluted by the convention on Windows-x86 to prefix the function name with `_` and suffix it based on the stack size of the arguments. We can't easily tell the argument size here, so we just try 0, 4, 8...128. (128 bytes should be enough for anyone.) This is inefficient, but it's a one-time hit with a known number of functions, and doesn't seem to have any significant impact. The benefit of this in code is we don't need the DllImports any more, and we don't need to conditionally use `FindSymbol` - we just use it for everything, so things are rather more uniform and tidy. The further benefit of this is that the library name is no longer tied to a particular filename format - so if someone wanted to have a directory with the libraries for every version in, with the version in the filename, we'd handle that just fine. (At least once Testing: - Windows: - Console app under msbuild, dotnet cli and DNX - ASP.NET Classic under msbuild - ASP.NET Core (still running under net451) - Ubuntu 16.04 - Console app under dotnet cli, run with dotnet run and mono - OSX: - Console app under dotnet cli, run with dotnet run and mono Under dotnet cli, a dependency on `Microsoft.NETCore.Platforms` is required in order to force the libraries to be copied. This change does *not* further enable .NET Core. It attempts to keep the existing experimental .NET Core project files in line with the msbuild files, but I expect further work to be required for .NET Core, which has a different build/publication model. --- templates/src/csharp/build_options.include | 16 ++++++++-------- 1 file changed, 8 insertions(+), 8 deletions(-) (limited to 'templates/src/csharp/build_options.include') diff --git a/templates/src/csharp/build_options.include b/templates/src/csharp/build_options.include index ae96b94f72..169a45a808 100644 --- a/templates/src/csharp/build_options.include +++ b/templates/src/csharp/build_options.include @@ -20,10 +20,10 @@ "include": "data/*", % endif "mappings": { - "nativelibs/windows_x64/grpc_csharp_ext.dll": "../../../vsprojects/x64/Debug/grpc_csharp_ext.dll", - "nativelibs/windows_x86/grpc_csharp_ext.dll": "../../../vsprojects/Debug/grpc_csharp_ext.dll", - "nativelibs/linux_x64/libgrpc_csharp_ext.so": "../../../libs/dbg/libgrpc_csharp_ext.so", - "nativelibs/macosx_x64/libgrpc_csharp_ext.dylib": "../../../libs/dbg/libgrpc_csharp_ext.dylib" + "grpc_csharp_ext.x64.dll": "../../../vsprojects/x64/Debug/grpc_csharp_ext.dll", + "grpc_csharp_ext.x86.dll": "../../../vsprojects/Debug/grpc_csharp_ext.dll", + "libgrpc_csharp_ext.x64.so": "../../../libs/dbg/libgrpc_csharp_ext.so", + "libgrpc_csharp_ext.x64.dylib": "../../../libs/dbg/libgrpc_csharp_ext.dylib" } } } @@ -42,10 +42,10 @@ "include": "data/*", % endif "mappings": { - "nativelibs/windows_x64/grpc_csharp_ext.dll": "../../../vsprojects/x64/Release/grpc_csharp_ext.dll", - "nativelibs/windows_x86/grpc_csharp_ext.dll": "../../../vsprojects/Release/grpc_csharp_ext.dll", - "nativelibs/linux_x64/libgrpc_csharp_ext.so": "../../../libs/opt/libgrpc_csharp_ext.so", - "nativelibs/macosx_x64/libgrpc_csharp_ext.dylib": "../../../libs/opt/libgrpc_csharp_ext.dylib" + "grpc_csharp_ext.x64.dll": "../../../vsprojects/x64/Release/grpc_csharp_ext.dll", + "grpc_csharp_ext.x86.dll": "../../../vsprojects/Release/grpc_csharp_ext.dll", + "libgrpc_csharp_ext.x64.so": "../../../libs/opt/libgrpc_csharp_ext.so", + "libgrpc_csharp_ext.x64.dylib": "../../../libs/opt/libgrpc_csharp_ext.dylib" } } } -- cgit v1.2.3