Prepare

Check the head's size, encode the start chunks, write the save into the store (memory when FJoinStreamConfig::MakeSaveStore is empty), read its header and index back through the store's file and plan the frames.

Declaration

EJoinWrite Prepare(FSaveParallelForFn ParallelFor = nullptr, void* ParallelContext = nullptr);

Header: #include "Native/Net/NetJoin.h"
Module: PublicDependencyModuleNames.Add("OrreryTerrainCore"); in your module’s Build.cs.
Stability: Experimental: supported, may change in a minor version, with a changelog line.
Thread: Any thread, once.

Description

Releases the plan.

Parameters

Name	Type	Default	Meaning
`ParallelFor`	`FSaveParallelForFn`	`nullptr`	Handed to WriteSave for the cold pages; null reads them on this thread.
`ParallelContext`	`void*`	`nullptr`	Passed back to ParallelFor unchanged.

Returns

Ok; HeadTooLarge before any save work when the open strokes' tiles need a head over FJoinStreamConfig::MaxHeadBytes; SaveFailed; or the constructor's StrokeMismatch.

Note.

Any thread, once. Memory: the index's page plan and the start chunks, each freed once framed; the save itself only with the in-memory store. Disk: the save, once, with a file store.