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* Introduce the concept of heaps to memory tracing. A heap is defined a block of memory which can be used to host allocations. Heaps can be given descriptive names and belong to logical hierarchy. At the top of the hierarchy is one of 16 possible "root heaps". Currently the only two root heaps are system memory (virtual memory) and video memory (VRAM). If no root heap is specified for an allocation, system memory is assumed. * Remove the CoreAdd/CoreRemove events and replace them with Alloc + MarkAllocAsHeap events. * Introduce a public interface for tracing memory allocations. * Reduce the memory footprint of allocation events by changing the "Owner" field (hash or return address) into a "CallstackId" (running unique callstack counter). Additonally introduced a AllocSystem/AllocVideo specialized event which encodes the root heap in the message type. Total size of the event went from 21 bytes to 17 bytes/18 bytes. * Remove realloc scopes. These scopes comprised 50% of events during memory tracing, but the information can be reconstructed during analysis in the case of reallocations. The only other use case (in Level.cpp) was using the scope to maintain tag while copying from one array to another. For this use case we add a specific scope for pushing the tag of a specific pointer. #rb ionut.matasaru #preflight 614b0058a3310f000101cc42 #ROBOMERGE-AUTHOR: johan.berg #ROBOMERGE-SOURCE: CL 17594699 in //UE5/Main/... #ROBOMERGE-BOT: STARSHIP (Main -> Release-Engine-Test) (v871-17566257) [CL 17594714 by johan berg in ue5-release-engine-test branch]