- Added IRequestOwner::LaunchTask to launch a task as a request in the request owner.
- Renamed ExecuteInCacheThreadPool to LaunchTaskInCacheThreadPool.
- Made GCacheThreadPool private to one source file.
- Changed task scheduling throughout DDC to use these functions where appropriate.
#preflight 623b846d8900c14eecd4daa4
#rb Zousar.Shaker
[CL 19485686 by Devin Doucette in ue5-main branch]
The cache stores can individually control their "legacy mode" now, which offers a choice of ValueOnly, ValueWithLegacyFallback, LegacyOnly.
- Using ValueOnly will forward every legacy request through the Value API, which compresses values by default and supports values larger than 2 GiB.
- Using ValueWithLegacyFallback behaves like ValueOnly, but misses from GetValue are forwarded to GetCachedData, and stored with PutValue if found.
- Using LegacyOnly will forward every legacy request through the Legacy API.
FLegacyCacheValue uses shared state to ensure that each value is compressed or decompressed at most once.
#jira UE-134381
#preflight 62054b430c64e1822f41231b
#lockdown Mark.Lintott
#rb Zousar.Shaker
#rnx
#ROBOMERGE-AUTHOR: devin.doucette
#ROBOMERGE-SOURCE: CL 18940270 in //UE5/Release-5.0/... via CL 18941016 via CL 18941392
#ROBOMERGE-BOT: UE5 (Release-Engine-Test -> Main) (v917-18934589)
[CL 18941401 by devin doucette in ue5-main branch]
The DDC thread pool is a temporary workaround for issues with high-latency cache accesses happening on regular worker thread, which are reduced in number in 5.0 compared to 4.27. Moving it to be private within DDC will keep it easy to remove once the high-latency caches are accessed through an async API.
#rb Zousar.Shaker
#rnx
#preflight 61e5b194873f2ea48f3e0b02
#ROBOMERGE-AUTHOR: devin.doucette
#ROBOMERGE-SOURCE: CL 18634975 in //UE5/Release-5.0/... via CL 18634980 via CL 18634997
#ROBOMERGE-BOT: UE5 (Release-Engine-Test -> Main) (v899-18417669)
[CL 18637555 by devin doucette in ue5-main branch]
FCacheBucket is now always exposed as FAnsiStringView.
#rb Zousar.Shaker
#rnx
#ROBOMERGE-SOURCE: CL 17084521 in //UE5/Main/...
#ROBOMERGE-BOT: STARSHIP (Main -> Release-Engine-Test) (v853-17066230)
[CL 17084549 by devin doucette in ue5-release-engine-test branch]
The new API uses exported functions and cannot be included with the old API without compile errors in existing code that has an include-only dependency on DDC.
#rb Zousar.Shaker
#rnx
#preflight 610c01e3aeb05700011dc5ab
#ROBOMERGE-SOURCE: CL 17071263 in //UE5/Main/...
#ROBOMERGE-BOT: STARSHIP (Main -> Release-Engine-Test) (v853-17066230)
[CL 17071271 by devin doucette in ue5-release-engine-test branch]
