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0024050: Voxel_FastConverter::Convert / ConvertUsingSAT - problems in multithreaded scenario

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Computing triangle spans using integer numbers.
This commit is contained in:
Pawel 2013-07-04 13:12:27 +04:00
parent 404d419daa
commit 03679c4858
1 changed files with 30 additions and 4 deletions

34
src/Voxel/Voxel_FastConverter.cxx

@ -189,8 +189,21 @@ Standard_Boolean Voxel_FastConverter::Convert(Standard_Integer& progress,
// Compute the scope of triangles for current thread
Standard_Integer start_thread_triangle = 1, end_thread_triangle = myNbTriangles, ithread_triangle = 0;
start_thread_triangle = (ithread - 1) * (myNbTriangles / myNbThreads) + 1;
end_thread_triangle = (ithread - 0) * (myNbTriangles / myNbThreads);
if(myNbTriangles < myNbThreads)
{
if(ithread != 1)
return Standard_False;
//in case we're in thread one process all triangles
}
else
{
div_t division = div(myNbTriangles, myNbThreads);
start_thread_triangle = (ithread - 1) * division.quot + 1;
end_thread_triangle = (ithread - 0) * division.quot;
if(ithread == myNbThreads)
end_thread_triangle += division.rem;
}
// Convert
TopLoc_Location L;
@ -314,8 +327,21 @@ Standard_Boolean Voxel_FastConverter::ConvertUsingSAT(Standard_Integer& pro
// Compute the scope of triangles for current thread
Standard_Integer start_thread_triangle = 1, end_thread_triangle = myNbTriangles, ithread_triangle = 0;
start_thread_triangle = (ithread - 1) * (myNbTriangles / myNbThreads) + 1;
end_thread_triangle = (ithread - 0) * (myNbTriangles / myNbThreads);
if(myNbTriangles < myNbThreads)
{
if(ithread != 1)
return Standard_False;
//in case we're in thread one process all triangles
}
else
{
div_t division = div(myNbTriangles, myNbThreads);
start_thread_triangle = (ithread - 1) * division.quot + 1;
end_thread_triangle = (ithread - 0) * division.quot;
if(ithread == myNbThreads)
end_thread_triangle += division.rem;
}
// Convert
TopLoc_Location L;