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7b92bdae2f
#rb none #jira none #rnx #preflight 64258067b72410fc17a11f03 - The main goal was to prevent the GConfig from flushing to disk on shutdown as we do not want the tool to do that. - We can do this by disabling the disk operations for GConfig or forcing the process to terminate, the latter of which we support in commandlets via the cmdline option '-fastexit' [CL 24852905 by paul chipchase in ue5-main branch]
108 lines
3.2 KiB
C++
108 lines
3.2 KiB
C++
// Copyright Epic Games, Inc. All Rights Reserved.
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#include "UnrealVirtualizationTool.h"
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#include "Modules/ModuleManager.h"
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#include "RequiredProgramMainCPPInclude.h"
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#include "UnrealVirtualizationToolApp.h"
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IMPLEMENT_APPLICATION(UnrealVirtualizationTool, "UnrealVirtualizationTool");
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DEFINE_LOG_CATEGORY(LogVirtualizationTool);
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int32 UnrealVirtualizationToolMain(int32 ArgC, TCHAR* ArgV[])
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{
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TRACE_CPUPROFILER_EVENT_SCOPE(UnrealVirtualizationToolMain);
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using namespace UE::Virtualization;
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// Although standalone tools can set the project path via the cmdline this will not change the ProjectDir being
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// used as standalone tools have a beespoke path in FGenericPlatformMisc::ProjectDir. We can work around this
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// for now by doing our own parsing then using the project dir override feature.
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// This is a band aid while we consider adding better support for project files/directories with stand alone tools.
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if(ArgC >= 2)
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{
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FString Cmd(ArgV[1]);
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if (!Cmd.IsEmpty() && !Cmd.StartsWith(TEXT("-")) && Cmd.EndsWith(FProjectDescriptor::GetExtension()))
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{
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FString ProjectDir = FPaths::GetPath(Cmd);
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ProjectDir = FFileManagerGeneric::DefaultConvertToRelativePath(*ProjectDir);
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// The path should end with a trailing slash (see FGenericPlatformMisc::ProjectDir) so we use
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// NormalizeFilename not NormalizeDirectoryName as the latter will remove trailing slashes. We
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// also need to add one if it is missing.
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// We probably should move this path fixup code to 'FPlatformMisc::SetOverrideProjectDir'
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FPaths::NormalizeFilename(ProjectDir);
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if (!ProjectDir.EndsWith(TEXT("/")))
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{
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ProjectDir += TEXT("/");
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}
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FPlatformMisc::SetOverrideProjectDir(ProjectDir);
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}
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}
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GEngineLoop.PreInit(ArgC, ArgV);
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check(GConfig && GConfig->IsReadyForUse());
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#if 0
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while (!FPlatformMisc::IsDebuggerPresent())
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{
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FPlatformProcess::SleepNoStats(0.0f);
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}
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PLATFORM_BREAK();
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#endif
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FModuleManager::Get().StartProcessingNewlyLoadedObjects();
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bool bRanSuccessfully = true;
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FUnrealVirtualizationToolApp App;
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EInitResult Result = App.Initialize();
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if (Result == EInitResult::Success)
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{
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if (!App.Run())
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{
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UE_LOG(LogVirtualizationTool, Error, TEXT("UnrealVirtualizationTool ran with errors"));
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bRanSuccessfully = false;
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}
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}
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else if(Result == EInitResult::Error)
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{
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UE_LOG(LogVirtualizationTool, Error, TEXT("UnrealVirtualizationTool failed to initialize"));
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bRanSuccessfully = false;
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}
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UE_CLOG(bRanSuccessfully, LogVirtualizationTool, Display, TEXT("UnrealVirtualizationTool ran successfully"));
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const uint8 ReturnCode = bRanSuccessfully ? 0 : 1;
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if (FParse::Param(FCommandLine::Get(), TEXT("fastexit")))
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{
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FPlatformMisc::RequestExitWithStatus(true, ReturnCode);
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}
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else
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{
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TRACE_CPUPROFILER_EVENT_SCOPE(Shutdown);
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GConfig->DisableFileOperations(); // We don't want to write out any config file changes!
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// Even though we are exiting anyway we need to request an engine exit in order to get a clean shutdown
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RequestEngineExit(TEXT("The process has finished"));
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FEngineLoop::AppPreExit();
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FModuleManager::Get().UnloadModulesAtShutdown();
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FEngineLoop::AppExit();
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}
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return ReturnCode;
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}
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INT32_MAIN_INT32_ARGC_TCHAR_ARGV()
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{
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FTaskTagScope Scope(ETaskTag::EGameThread);
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return UnrealVirtualizationToolMain(ArgC, ArgV);
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} |