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#rb trivial #rnx #ROBOMERGE-SOURCE: CL 17079642 in //UE5/Main/... #ROBOMERGE-BOT: STARSHIP (Main -> Release-Engine-Test) (v853-17066230) [CL 17079646 by devin doucette in ue5-release-engine-test branch]
116 lines
2.9 KiB
C++
116 lines
2.9 KiB
C++
// Copyright Epic Games, Inc. All Rights Reserved.
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#include "DerivedDataCacheKey.h"
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#include "Algo/AllOf.h"
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#include "Containers/Set.h"
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#include "Containers/StringConv.h"
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#include "DerivedDataCachePrivate.h"
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#include "Math/UnrealMathUtility.h"
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#include "Misc/ScopeRWLock.h"
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namespace UE::DerivedData::Private
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{
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class FCacheBucketOwner : public FCacheBucket
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{
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public:
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static const TCHAR* AllocName(FStringView Bucket);
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inline explicit FCacheBucketOwner(FStringView Bucket);
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inline FCacheBucketOwner(FCacheBucketOwner&& Bucket);
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inline ~FCacheBucketOwner();
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FCacheBucketOwner(const FCacheBucketOwner&) = delete;
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FCacheBucketOwner& operator=(const FCacheBucketOwner&) = delete;
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using FCacheBucket::operator==;
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inline bool operator==(FStringView Bucket) const { return ToString<TCHAR>().Equals(Bucket, ESearchCase::IgnoreCase); }
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friend inline uint32 GetTypeHash(const FCacheBucketOwner& Bucket)
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{
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return ::GetTypeHash(Bucket.ToString<TCHAR>());
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}
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};
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inline const TCHAR* FCacheBucketOwner::AllocName(FStringView Bucket)
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{
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FTCHARToUTF8 Bucket8Conversion(Bucket);
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FAnsiStringView Bucket8 = Bucket8Conversion;
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const int32 BucketLen = Bucket.Len();
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const int32 Bucket8Len = Bucket8.Len();
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const int32 PrefixSize = FMath::DivideAndRoundUp<int32>(2, sizeof(TCHAR));
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TCHAR* Buffer = new TCHAR[PrefixSize + BucketLen + 1 + FMath::DivideAndRoundUp<int32>(Bucket8Len + 1, sizeof(TCHAR))];
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Buffer += PrefixSize;
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const TCHAR* const Name = Buffer;
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reinterpret_cast<uint8*>(Buffer)[LengthOffset] = static_cast<uint8>(BucketLen);
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reinterpret_cast<uint8*>(Buffer)[LengthOffset8] = static_cast<uint8>(Bucket8Len);
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Bucket.CopyString(Buffer, BucketLen);
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Buffer += BucketLen;
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*Buffer++ = TEXT('\0');
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ANSICHAR* Buffer8 = reinterpret_cast<ANSICHAR*>(Buffer);
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Bucket8.CopyString(Buffer8, Bucket8Len);
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Buffer8 += Bucket8Len;
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*Buffer8++ = '\0';
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return Name;
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}
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inline FCacheBucketOwner::FCacheBucketOwner(FStringView Bucket)
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: FCacheBucket(AllocName(Bucket))
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{
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}
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inline FCacheBucketOwner::FCacheBucketOwner(FCacheBucketOwner&& Bucket)
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: FCacheBucket(Bucket)
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{
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Bucket.Reset();
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}
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inline FCacheBucketOwner::~FCacheBucketOwner()
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{
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if (IsValid())
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{
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const int32 PrefixSize = FMath::DivideAndRoundUp<int32>(2, sizeof(TCHAR));
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delete[] (ToString<TCHAR>().GetData() - PrefixSize);
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}
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}
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class FCacheBuckets
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{
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public:
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inline FCacheBucket FindOrAdd(FStringView Name);
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private:
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FRWLock Lock;
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TSet<FCacheBucketOwner> Buckets;
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};
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inline FCacheBucket FCacheBuckets::FindOrAdd(FStringView Name)
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{
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const uint32 Hash = GetTypeHash(Name);
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if (FReadScopeLock ReadLock(Lock); const FCacheBucketOwner* Bucket = Buckets.FindByHash(Hash, Name))
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{
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return *Bucket;
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}
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AssertValidCacheBucketName(Name);
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FCacheBucketOwner LocalBucket(Name);
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FWriteScopeLock WriteLock(Lock);
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return Buckets.FindOrAddByHash(Hash, MoveTemp(LocalBucket));
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}
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FCacheBucket CreateCacheBucket(FStringView Name)
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{
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static FCacheBuckets Buckets;
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return Buckets.FindOrAdd(Name);
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}
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} // UE::DerivedData::Private
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