ogb912/opensim
1
0
Fork 0
mirror of https://github.com/opensim/opensim.git synced 2026-08-11 03:45:35 +08:00
Code Issues Packages Projects Releases Wiki Activity

Eliminate pinned Mesh data on managed heap by using IntPtrs to memory allocated on the unmanaged heap. This prevents fragmentation of the managed heap and the resulting stress on GC. A region with ~150,000 prims using ODE and Meshmerizer saw memory remain flat around 1.2GB as opposed to 1.5GB and continually growing due to pinned memory. This patch complements the unique mesh dictionary patch applied to Meshmerizer but is independent. The net effect is a 60-75% reduction in memory for our largest regions.

Browse Source
This commit is contained in:
Dan Lake
2009-10-05 05:35:56 -07:00
committed by Melanie
parent 5c593f3892
commit 6d52974c5f
3 changed files with 120 additions and 61 deletions
Download Patch File Download Diff File Expand all files Collapse all files

13
OpenSim/Region/Physics/OdePlugin/ODEPrim.cs
View File

@@ -813,18 +813,17 @@ namespace OpenSim.Region.Physics.OdePlugin
}
}
float[] vertexList = mesh.getVertexListAsFloatLocked(); // Note, that vertextList is pinned in memory
int[] indexList = mesh.getIndexListAsIntLocked(); // Also pinned, needs release after usage
IntPtr vertices, indices;
int vertexCount, indexCount;
int vertexStride, triStride;
mesh.getVertexListAsPtrToFloatArray( out vertices, out vertexStride, out vertexCount ); // Note, that vertices are fixed in unmanaged heap
mesh.getIndexListAsPtrToIntArray( out indices, out triStride, out indexCount ); // Also fixed, needs release after usage
mesh.releaseSourceMeshData(); // free up the original mesh data to save memory
int VertexCount = vertexList.GetLength(0)/3;
int IndexCount = indexList.GetLength(0);
_triMeshData = d.GeomTriMeshDataCreate();
d.GeomTriMeshDataBuildSimple(_triMeshData, vertexList, 3*sizeof (float), VertexCount, indexList, IndexCount,
3*sizeof (int));
d.GeomTriMeshDataBuildSimple(_triMeshData, vertices, vertexStride, vertexCount, indices, indexCount, triStride);
d.GeomTriMeshDataPreprocess(_triMeshData);
_parent_scene.waitForSpaceUnlock(m_targetSpace);