* Use object type rather than var
* Remove double newlines
* Use pattern matching
#rnx
#preflight 647780095d23eca37d28a387
[CL 25706751 by joe kirchoff in ue5-main branch]
[FYI] Joe.Kirchoff
Original CL Desc
-----------------------------------------------------------------
UnrealBuildTool: More automated code cleanup
#rnx
[CL 25695155 by joe kirchoff in ue5-main branch]
Fixed an issue where it was possible to do more parallel actions than cores available.
#rb joe.kirchoff
#preflight 640bc8aa363e9b40abeac263
[CL 24600925 by bryan sefcik in ue5-main branch]
Why do this:
Currently when compiling a cpp file with MSVC, it compiles across multiple cores while clang does not. This means that while we support limiting the number of cores(using ProcessorCountMultiplier), MSVC will use more cores than we specify. It also means that MSVC will always be faster when compiling because clang does not support compiling a cpp over multiple cores. To get similiar results when compiling with clang, we set the weight of MSVC to 1.5 and the weight of clang to 1.0. We then set the ProcessorCountMultiplier to 1.5. This results in MSVC and clang taking roughly the same amount of CPU utilization and clang compiles to be much faster.
Old Timing(secs) Old CPU Utilization New Timing New CPU Utilization(secs)
PlatformA AncientGame 590.94 51 431.47 73
MSVC AncientGameEditor 1016.96 94 1026.08 95
Clang AncientGameEditor 1543.72 63 1270.4 84
PlatformB AncientGame 494 52 396.95 74
Old = without weight path
New = with weight path
#jira
#rb christopher.waters, joe.kirchoff
#preflight 6409026c8832f48a4dc72025
[CL 24567859 by bryan sefcik in ue5-main branch]
* Optimization - WriteFileIfChanged taking enumerable of strings now join them all up to one string and use the WriteFileIfChanged path for one string. This saves some time seen when profiling
* Optimization - ExpandVariables use OrdinalCompare to find "$("
#preflight 63d838fcf626715201917046
#rb joe.kirchoff
[CL 23923964 by henrik karlsson in ue5-main branch]
This represents UE4/Main @17911760, Release-5.0 @17915875 and Dev-PerfTest @17914035
[CL 17918595 by aurel cordonnier in ue5-release-engine-test branch]
Evidence suggests that throughput is not significantly reduced by using the number of physical cores, and that doing so reduces frequency of "C1060: compiler is out of heap space" errors.
#jira none
#ROBOMERGE-AUTHOR: jonathan.adamczewski
#ROBOMERGE-SOURCE: CL 17539899 in //UE5/Main/...
#ROBOMERGE-BOT: STARSHIP (Main -> Release-Engine-Test) (v870-17433530)
#ROBOMERGE[bot1]: EMT
[CL 17539920 by jonathan adamczewski in ue5-release-engine-test branch]
Support for writing files directly as lines, without converting to a single string first.
#jira none
#rb joe.kirchoff
#ROBOMERGE-SOURCE: CL 17162046 in //UE5/Main/...
#ROBOMERGE-BOT: STARSHIP (Main -> Release-Engine-Test) (v855-17104924)
[CL 17162059 by jonathan adamczewski in ue5-release-engine-test branch]
RootDirectory, EngineDirectory, UnrealBuildToolPath are now found in BuildUtilities' UnrealBuild namesapce.
The way these are computed has changed. Previously, it was assumed that the application is UnrealBuildTool, and paths were constructed relative to that assembly.
Now, the assumption is that the process is located under a "Engine/Build/DotNET" sub-path and paths are constructed relative to that.
#jira none
#ROBOMERGE-SOURCE: CL 16607440 in //UE5/Main/...
#ROBOMERGE-BOT: STARSHIP (Main -> Release-Engine-Test) (v828-16531559)
[CL 16607455 by jonathan adamczewski in ue5-release-engine-test branch]
