PointCloudLibrary/pcl

Poisson reconstruction in parallel threads segfaults

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#1,845 opened on Mar 16, 2017

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help wantedkind: bugkind: todomodule: surface

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Description

Your Environment

  • Operating System and version: Ubuntu 16.10
  • Compiler: gcc 6.2
  • PCL Version: 1.8 as packaged for Ubuntu

Expected Behavior

Two threads should be able to create two different instances of pcl::Poisson and run them on two different input clouds at the same time.

Current Behavior

Segfault

Code to Reproduce

http://pastebin.com/yJrpcpTL

Contributor guide

Research direction
Inspect the Poisson reconstruction source code for global or static variables that may cause race conditions. Look for thread unsafe patterns like mutable static data or lack of synchronization. Consider using thread local storage or mutexes to ensure thread safety.
Tech stack
cpp
Domain
computer graphics
Issue type
Bug
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
Half day
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Stale
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
C++multithreading
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
35