MantisBT - VTK

View Issue Details

Project

Category

View Status

Date Submitted

Last Update

0015365

VTK

(No Category)

public

2015-03-09 13:49

2016-01-14 13:10

Reporter

David Gobbi

Assigned To

Cory Quammen

Priority

high

Severity

crash

Reproducibility

have not tried

Status

closed

Resolution

fixed

Platform

OS Version

Product Version

6.2.0

Target Version

Fixed in Version

6.2.1

Project

TBD

Type

crash

Summary

0015365: Crash in vtkLookupTableMapData if called from multiple threads

Description

This morning I saw a crash in the following recently-added vtkLookupTable code, when using the lookup table via vtkImageMapToColors on a multi-CPU workstation. By adding print statements, I saw that vtkLookupTableMapData() was being called from multiple threads, which were simultaneously calling the Resize() function. It looks like a mutex will be needed in order to make the code thread-safe.

  // Resize the internal table to hold the special colors at the
  // end. When this function is called repeatedly with the same size
  // lookup table, memory reallocation will be done only one the first
  // call if at all.
  vtkUnsignedCharArray* lookupTable = self->GetTable();
  vtkIdType numberOfColors = lookupTable->GetNumberOfTuples();
  vtkIdType neededSize = (numberOfColors + vtkLookupTable::NUMBER_OF_SPECIAL_COLORS) *
    lookupTable->GetNumberOfComponents();
  if (lookupTable->GetSize() < neededSize)
    {
    lookupTable->Resize(numberOfColors + vtkLookupTable::NUMBER_OF_SPECIAL_COLORS);
    }

Steps To Reproduce

Additional Information