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ParallelForWithPreWork

General purpose parallel for that uses the taskgraph

Choose your operating system:

Windows

macOS

Linux

References

Module	Core
Header	/Engine/Source/Runtime/Core/Public/Async/ParallelFor.h
Include	#include "Async/ParallelFor.h"

Syntax

void ParallelForWithPreWork
(
    int32 Num,
    TFunctionRef< void)> Body,
    TFunctionRef< void()> CurrentThreadWorkToDoBeforeHelping,
    EParallelForFlags Flags
)

Remarks

General purpose parallel for that uses the taskgraph

Parameters

Parameter	Description
Num;	number of calls of Body; Body(0), Body(1)....Body(Num - 1)
Body;	Function to call from multiple threads
CurrentThreadWorkToDoBeforeHelping;	The work is performed on the main thread before it starts helping with the ParallelFor proper
Flags;	Used to customize the behavior of the ParallelFor if needed. Notes: Please add stats around to calls to parallel for and within your lambda as appropriate. Do not clog the task graph with long running tasks or tasks that block.