Set num_threads_ to 1 if OMP is not available. Some classes use the num_threads_ as indices into arrays, which would fail with value of 0.

larshg · larshg · commit eee3fe842799 · 2025-09-18T12:40:20.000+02:00
diff --git a/common/include/pcl/impl/pcl_base.hpp b/common/include/pcl/impl/pcl_base.hpp
@@ -167,14 +167,12 @@ pcl::PCLBase<PointT>::initCompute ()
     for (auto i = indices_size; i < indices_->size (); ++i) { (*indices_)[i] = i; }
   }
 
-   // Set the number of threads
-#ifdef _OPENMP
-  num_threads_ = num_threads_ != 0 ? num_threads_ : omp_get_num_procs();
-#else
-  if (num_threads_ != 1) {
-    PCL_WARN("OpenMP is not available. Keeping number of threads unchanged at 1\n");
-  }
-#endif
+  // Set the number of threads
+  #ifdef _OPENMP
+    num_threads_ = num_threads_ != 0 ? num_threads_ : omp_get_num_procs();
+  #else
+    num_threads_ = 1;
+  #endif
 
   return (true);
 }
diff --git a/common/src/pcl_base.cpp b/common/src/pcl_base.cpp
@@ -130,14 +130,12 @@ pcl::PCLBase<pcl::PCLPointCloud2>::initCompute ()
       std::iota(indices_->begin () + indices_size, indices_->end (), indices_size);
   }
 
-   // Set the number of threads
-#ifdef _OPENMP
-  num_threads_ = num_threads_ != 0 ? num_threads_ : omp_get_num_procs();
-#else
-  if (num_threads_ != 1) {
-    PCL_WARN("OpenMP is not available. Keeping number of threads unchanged at 1\n");
-  }
-#endif
+  // Set the number of threads
+  #ifdef _OPENMP
+    num_threads_ = num_threads_ != 0 ? num_threads_ : omp_get_num_procs();
+  #else
+    num_threads_ = 1;
+  #endif
 
   return (true);
 }
diff --git a/features/include/pcl/features/impl/fpfh_omp.hpp b/features/include/pcl/features/impl/fpfh_omp.hpp
@@ -55,7 +55,8 @@ pcl::FPFHEstimationOMP<PointInT, PointNT, PointOutT>::setNumberOfThreads (unsign
   num_threads_ = num_threads != 0 ? num_threads : omp_get_num_procs();
 #else
   if (num_threads_ != 1) {
-    PCL_WARN("OpenMP is not available. Keeping number of threads unchanged at 1\n");
+    PCL_WARN("OpenMP is not available. Setting number of threads to 1\n");
+    num_threads_ = 1;
   }
 #endif
 }
diff --git a/features/include/pcl/features/impl/normal_3d_omp.hpp b/features/include/pcl/features/impl/normal_3d_omp.hpp
@@ -51,7 +51,8 @@ pcl::NormalEstimationOMP<PointInT, PointOutT>::setNumberOfThreads (unsigned int
   num_threads_ = num_threads != 0 ? num_threads : omp_get_num_procs();
 #else
   if (num_threads_ != 1) {
-    PCL_WARN("OpenMP is not available. Keeping number of threads unchanged at 1\n");
+    PCL_WARN("OpenMP is not available. Setting number of threads to 1\n");
+    num_threads_ = 1;
   }
 #endif
 }
diff --git a/features/include/pcl/features/impl/principal_curvatures.hpp b/features/include/pcl/features/impl/principal_curvatures.hpp
@@ -53,7 +53,8 @@ pcl::PrincipalCurvaturesEstimation<PointInT, PointNT, PointOutT>::setNumberOfThr
   num_threads_ = num_threads != 0 ? num_threads : omp_get_num_procs();
 #else
   if (num_threads_ != 1) {
-    PCL_WARN("OpenMP is not available. Keeping number of threads unchanged at 1\n");
+    PCL_WARN("OpenMP is not available. Setting number of threads to 1\n");
+    num_threads_ = 1;
   }
 #endif
 }
diff --git a/features/include/pcl/features/impl/shot_lrf_omp.hpp b/features/include/pcl/features/impl/shot_lrf_omp.hpp
@@ -51,7 +51,8 @@ pcl::SHOTLocalReferenceFrameEstimationOMP<PointInT, PointOutT>::setNumberOfThrea
   num_threads_ = num_threads != 0 ? num_threads : omp_get_num_procs();
 #else
   if (num_threads_ != 1) {
-    PCL_WARN("OpenMP is not available. Keeping number of threads unchanged at 1\n");
+    PCL_WARN("OpenMP is not available. Setting number of threads to 1\n");
+    num_threads_ = 1;
   }
 #endif
 }
diff --git a/features/include/pcl/features/impl/shot_omp.hpp b/features/include/pcl/features/impl/shot_omp.hpp
@@ -129,7 +129,8 @@ pcl::SHOTEstimationOMP<PointInT, PointNT, PointOutT, PointRFT>::setNumberOfThrea
   num_threads_ = num_threads != 0 ? num_threads : omp_get_num_procs();
 #else
   if (num_threads_ != 1) {
-    PCL_WARN("OpenMP is not available. Keeping number of threads unchanged at 1\n");
+    PCL_WARN("OpenMP is not available. Setting number of threads to 1\n");
+    num_threads_ = 1;
   }
 #endif
 }
@@ -211,7 +212,8 @@ pcl::SHOTColorEstimationOMP<PointInT, PointNT, PointOutT, PointRFT>::setNumberOf
   num_threads_ = num_threads != 0 ? num_threads : omp_get_num_procs();
 #else
   if (num_threads_ != 1) {
-    PCL_WARN("OpenMP is not available. Keeping number of threads unchanged at 1\n");
+    PCL_WARN("OpenMP is not available. Setting number of threads to 1\n");
+    num_threads_ = 1;
   }
 #endif
 }
diff --git a/features/include/pcl/features/intensity_gradient.h b/features/include/pcl/features/intensity_gradient.h
@@ -84,8 +84,8 @@ namespace pcl
         num_threads_ = num_threads != 0 ? num_threads : omp_get_num_procs();
 #else
         if (num_threads_ != 1) {
-          PCL_WARN(
-              "OpenMP is not available. Keeping number of threads unchanged at 1\n");
+          PCL_WARN("OpenMP is not available. Setting number of threads to 1\n");
+          num_threads_ = 1;
         }
 #endif
       }
diff --git a/filters/include/pcl/filters/convolution.h b/filters/include/pcl/filters/convolution.h
@@ -130,8 +130,8 @@ namespace pcl
           num_threads_ = num_threads != 0 ? num_threads : omp_get_num_procs();
 #else
           if (num_threads_ != 1) {
-            PCL_WARN(
-                "OpenMP is not available. Keeping number of threads unchanged at 1\n");
+            PCL_WARN("OpenMP is not available. Setting number of threads to 1\n");
+            num_threads_ = 1;
           }
 #endif
         }
diff --git a/filters/include/pcl/filters/convolution_3d.h b/filters/include/pcl/filters/convolution_3d.h
@@ -220,8 +220,8 @@ namespace pcl
           num_threads_ = num_threads != 0 ? num_threads : omp_get_num_procs();
 #else
           if (num_threads_ != 1) {
-            PCL_WARN(
-                "OpenMP is not available. Keeping number of threads unchanged at 1\n");
+            PCL_WARN("OpenMP is not available. Setting number of threads to 1\n");
+            num_threads_ = 1;
           }
 #endif
         }
diff --git a/filters/include/pcl/filters/farthest_point_sampling.h b/filters/include/pcl/filters/farthest_point_sampling.h
@@ -83,13 +83,16 @@ namespace pcl
           * \param num_threads the number of threads to use
           */
         inline void
-        setNumberOfThreads (unsigned int num_threads)
+        setNumberOfThreads(unsigned int num_threads)
         {
           #ifdef _OPENMP
-          num_threads_ = num_threads != 0 ? num_threads : omp_get_num_procs();
+            num_threads_ = num_threads != 0 ? num_threads : omp_get_num_procs();
           #else
-          if (num_threads_ != 1) 
-            PCL_WARN("OpenMP is not available. Keeping number of threads unchanged at 1\n");
+            if (num_threads_ != 1) {
+            }
+              PCL_WARN("OpenMP is not available. Setting number of threads to 1\n");
+              num_threads_ = 1;
+            }
           #endif
         }
 
diff --git a/filters/include/pcl/filters/impl/fast_bilateral_omp.hpp b/filters/include/pcl/filters/impl/fast_bilateral_omp.hpp
@@ -51,7 +51,8 @@ pcl::FastBilateralFilterOMP<PointT>::setNumberOfThreads (unsigned int num_thread
   num_threads_ = num_threads != 0 ? num_threads : omp_get_num_procs();
 #else
   if (num_threads_ != 1) {
-    PCL_WARN("OpenMP is not available. Keeping number of threads unchanged at 1\n");
+    PCL_WARN("OpenMP is not available. Setting number of threads to 1\n");
+    num_threads_ = 1;
   }
 #endif
 }
diff --git a/filters/include/pcl/filters/pyramid.h b/filters/include/pcl/filters/pyramid.h
@@ -103,8 +103,8 @@ namespace pcl
           num_threads_ = num_threads != 0 ? num_threads : omp_get_num_procs();
 #else
           if (num_threads_ != 1) {
-            PCL_WARN(
-                "OpenMP is not available. Keeping number of threads unchanged at 1\n");
+            PCL_WARN("OpenMP is not available. Setting number of threads to 1\n");
+            num_threads_ = 1;
           }
 #endif
         }
diff --git a/filters/include/pcl/filters/radius_outlier_removal.h b/filters/include/pcl/filters/radius_outlier_removal.h
@@ -156,7 +156,8 @@ namespace pcl
         num_threads_ = num_threads != 0 ? num_threads : omp_get_num_procs();
 #else
         if (num_threads_ != 1) {
-          PCL_WARN("OpenMP is not available. Keeping number of threads unchanged at 1\n");
+          PCL_WARN("OpenMP is not available. Setting number of threads to 1\n");
+          num_threads_ = 1;
         }
 #endif
       }
diff --git a/io/src/image_grabber.cpp b/io/src/image_grabber.cpp
@@ -1021,7 +1021,8 @@ pcl::ImageGrabberBase::setNumberOfThreads (unsigned int num_threads)
   impl_->num_threads_ = num_threads != 0 ? num_threads : omp_get_num_procs();
 #else
   if (num_threads_ != 1) {
-    PCL_WARN("OpenMP is not available. Keeping number of threads unchanged at 1\n");
+    PCL_WARN("OpenMP is not available. Setting number of threads to 1\n");
+    num_threads_ = 1;
   }
 #endif
 }
diff --git a/keypoints/include/pcl/keypoints/harris_2d.h b/keypoints/include/pcl/keypoints/harris_2d.h
@@ -135,8 +135,8 @@ namespace pcl
         num_threads_ = num_threads != 0 ? num_threads : omp_get_num_procs();
 #else
         if (num_threads_ != 1) {
-          PCL_WARN(
-              "OpenMP is not available. Keeping number of threads unchanged at 1\n");
+          PCL_WARN("OpenMP is not available. Setting number of threads to 1\n");
+          num_threads_ = 1;
         }
 #endif
       }
diff --git a/keypoints/include/pcl/keypoints/harris_3d.h b/keypoints/include/pcl/keypoints/harris_3d.h
@@ -158,8 +158,8 @@ namespace pcl
         num_threads_ = num_threads != 0 ? num_threads : omp_get_num_procs();
 #else
         if (num_threads_ != 1) {
-          PCL_WARN(
-              "OpenMP is not available. Keeping number of threads unchanged at 1\n");
+          PCL_WARN("OpenMP is not available. Setting number of threads to 1\n");
+          num_threads_ = 1;
         }
 #endif
       }
diff --git a/keypoints/include/pcl/keypoints/harris_6d.h b/keypoints/include/pcl/keypoints/harris_6d.h
@@ -125,8 +125,8 @@ namespace pcl
         num_threads_ = num_threads != 0 ? num_threads : omp_get_num_procs();
 #else
         if (num_threads_ != 1) {
-          PCL_WARN(
-              "OpenMP is not available. Keeping number of threads unchanged at 1\n");
+          PCL_WARN("OpenMP is not available. Setting number of threads to 1\n");
+          num_threads_ = 1;
         }
 #endif
       }
diff --git a/keypoints/include/pcl/keypoints/impl/iss_3d.hpp b/keypoints/include/pcl/keypoints/impl/iss_3d.hpp
@@ -109,7 +109,8 @@ pcl::ISSKeypoint3D<PointInT, PointOutT, NormalT>::setNumberOfThreads (unsigned i
   num_threads_ = num_threads != 0 ? num_threads : omp_get_num_procs();
 #else
   if (num_threads_ != 1) {
-    PCL_WARN("OpenMP is not available. Keeping number of threads unchanged at 1\n");
+    PCL_WARN("OpenMP is not available. Setting number of threads to 1\n");
+    num_threads_ = 1;
   }
 #endif
 }
diff --git a/keypoints/include/pcl/keypoints/impl/susan.hpp b/keypoints/include/pcl/keypoints/impl/susan.hpp
@@ -108,7 +108,8 @@ pcl::SUSANKeypoint<PointInT, PointOutT, NormalT, IntensityT>::setNumberOfThreads
   num_threads_ = num_threads != 0 ? num_threads : omp_get_num_procs();
 #else
   if (num_threads_ != 1) {
-    PCL_WARN("OpenMP is not available. Keeping number of threads unchanged at 1\n");
+    PCL_WARN("OpenMP is not available. Setting number of threads to 1\n");
+    num_threads_ = 1;
   }
 #endif
 }
diff --git a/keypoints/include/pcl/keypoints/trajkovic_2d.h b/keypoints/include/pcl/keypoints/trajkovic_2d.h
@@ -135,8 +135,8 @@ namespace pcl
         num_threads_ = num_threads != 0 ? num_threads : omp_get_num_procs();
 #else
         if (num_threads_ != 1) {
-          PCL_WARN(
-              "OpenMP is not available. Keeping number of threads unchanged at 1\n");
+          PCL_WARN("OpenMP is not available. Setting number of threads to 1\n");
+          num_threads_ = 1;
         }
 #endif
       }
diff --git a/keypoints/include/pcl/keypoints/trajkovic_3d.h b/keypoints/include/pcl/keypoints/trajkovic_3d.h
@@ -148,8 +148,8 @@ namespace pcl
         num_threads_ = num_threads != 0 ? num_threads : omp_get_num_procs();
 #else
         if (num_threads_ != 1) {
-          PCL_WARN(
-              "OpenMP is not available. Keeping number of threads unchanged at 1\n");
+          PCL_WARN("OpenMP is not available. Setting number of threads to 1\n");
+          num_threads_ = 1;
         }
 #endif
       }
diff --git a/registration/include/pcl/registration/correspondence_estimation.h b/registration/include/pcl/registration/correspondence_estimation.h
@@ -148,9 +148,9 @@ class CorrespondenceEstimationBase : public PCLBase<PointSource> {
     num_threads_ = num_threads != 0 ? num_threads : omp_get_num_procs();
 #else
     if (num_threads != 1) {
-      PCL_WARN("OpenMP is not available. Keeping number of threads unchanged at 1\n");
+      PCL_WARN("OpenMP is not available. Setting number of threads to 1\n");
+      num_threads_ = 1;
     }
-    num_threads_ = 1;
 #endif
   }
 
diff --git a/registration/include/pcl/registration/ia_fpcs.h b/registration/include/pcl/registration/ia_fpcs.h
@@ -169,7 +169,8 @@ class FPCSInitialAlignment : public Registration<PointSource, PointTarget, Scala
     num_threads_ = num_threads != 0 ? num_threads : omp_get_num_procs();
 #else
     if (num_threads_ != 1) {
-      PCL_WARN("OpenMP is not available. Keeping number of threads unchanged at 1\n");
+      PCL_WARN("OpenMP is not available. Setting number of threads to 1\n");
+      num_threads_ = 1;
     }
 #endif
   };
diff --git a/registration/include/pcl/registration/impl/gicp.hpp b/registration/include/pcl/registration/impl/gicp.hpp
@@ -54,7 +54,8 @@ GeneralizedIterativeClosestPoint<PointSource, PointTarget, Scalar>::setNumberOfT
   num_threads_ = num_threads != 0 ? num_threads : omp_get_num_procs();
 #else
   if (num_threads_ != 1) {
-    PCL_WARN("OpenMP is not available. Keeping number of threads unchanged at 1\n");
+    PCL_WARN("OpenMP is not available. Setting number of threads to 1\n");
+    num_threads_ = 1;
   }
 #endif
 }
diff --git a/sample_consensus/include/pcl/sample_consensus/sac.h b/sample_consensus/include/pcl/sample_consensus/sac.h
@@ -172,8 +172,8 @@ namespace pcl
         num_threads_ = num_threads != 0 ? num_threads : omp_get_num_procs();
 #else
         if (num_threads_ != 1) {
-          PCL_WARN(
-              "OpenMP is not available. Keeping number of threads unchanged at 1\n");
+          PCL_WARN("OpenMP is not available. Setting number of threads to 1\n");
+          num_threads_ = 1;
         }
 #endif
       }
diff --git a/segmentation/include/pcl/segmentation/approximate_progressive_morphological_filter.h b/segmentation/include/pcl/segmentation/approximate_progressive_morphological_filter.h
@@ -138,8 +138,8 @@ namespace pcl
         num_threads_ = num_threads != 0 ? num_threads : omp_get_num_procs();
 #else
         if (num_threads_ != 1) {
-          PCL_WARN(
-              "OpenMP is not available. Keeping number of threads unchanged at 1\n");
+          PCL_WARN("OpenMP is not available. Setting number of threads to 1\n");
+          num_threads_ = 1;
         }
 #endif
       }
diff --git a/segmentation/include/pcl/segmentation/sac_segmentation.h b/segmentation/include/pcl/segmentation/sac_segmentation.h
@@ -157,8 +157,8 @@ namespace pcl
         num_threads_ = num_threads != 0 ? num_threads : omp_get_num_procs();
 #else
         if (num_threads_ != 1) {
-          PCL_WARN(
-              "OpenMP is not available. Keeping number of threads unchanged at 1\n");
+          PCL_WARN("OpenMP is not available. Setting number of threads to 1\n");
+          num_threads_ = 1;
         }
 #endif
       }
diff --git a/surface/include/pcl/surface/mls.h b/surface/include/pcl/surface/mls.h
@@ -489,8 +489,8 @@ namespace pcl
         num_threads_ = num_threads != 0 ? num_threads : omp_get_num_procs();
 #else
         if (num_threads_ != 1) {
-          PCL_WARN(
-              "OpenMP is not available. Keeping number of threads unchanged at 1\n");
+          PCL_WARN("OpenMP is not available. Setting number of threads to 1\n");
+          num_threads_ = 1;
         }
 #endif
       }
diff --git a/surface/include/pcl/surface/poisson.h b/surface/include/pcl/surface/poisson.h
@@ -234,8 +234,8 @@ namespace pcl
         num_threads_ = num_threads != 0 ? num_threads : omp_get_num_procs();
 #else
         if (num_threads_ != 1) {
-          PCL_WARN(
-              "OpenMP is not available. Keeping number of threads unchanged at 1\n");
+          PCL_WARN("OpenMP is not available. Setting number of threads to 1\n");
+          num_threads_ = 1;
         }
 #endif
       }
diff --git a/tracking/include/pcl/tracking/impl/kld_adaptive_particle_filter_omp.hpp b/tracking/include/pcl/tracking/impl/kld_adaptive_particle_filter_omp.hpp
@@ -15,7 +15,8 @@ KLDAdaptiveParticleFilterOMPTracker<PointInT, StateT>::setNumberOfThreads(
   num_threads_ = num_threads != 0 ? num_threads : omp_get_num_procs();
 #else
   if (num_threads_ != 1) {
-    PCL_WARN("OpenMP is not available. Keeping number of threads unchanged at 1\n");
+    PCL_WARN("OpenMP is not available. Setting number of threads to 1\n");
+    num_threads_ = 1;
   }
 #endif
 }
diff --git a/tracking/include/pcl/tracking/impl/particle_filter_omp.hpp b/tracking/include/pcl/tracking/impl/particle_filter_omp.hpp
@@ -14,7 +14,8 @@ ParticleFilterOMPTracker<PointInT, StateT>::setNumberOfThreads(unsigned int num_
   num_threads_ = num_threads != 0 ? num_threads : omp_get_num_procs();
 #else
   if (num_threads_ != 1) {
-    PCL_WARN("OpenMP is not available. Keeping number of threads unchanged at 1\n");
+    PCL_WARN("OpenMP is not available. Setting number of threads to 1\n");
+    num_threads_ = 1;
   }
 #endif
 }
diff --git a/tracking/include/pcl/tracking/pyramidal_klt.h b/tracking/include/pcl/tracking/pyramidal_klt.h
@@ -212,7 +212,8 @@ class PyramidalKLTTracker : public Tracker<PointInT, Eigen::Affine3f> {
     num_threads_ = num_threads != 0 ? num_threads : omp_get_num_procs();
 #else
     if (num_threads_ != 1) {
-      PCL_WARN("OpenMP is not available. Keeping number of threads unchanged at 1\n");
+      PCL_WARN("OpenMP is not available. Setting number of threads to 1\n");
+      num_threads_ = 1;
     }
 #endif
   }

Original file line number	Diff line number	Diff line change
`@@ -55,7 +55,8 @@ pcl::FPFHEstimationOMP<PointInT, PointNT, PointOutT>::setNumberOfThreads (unsign`
`55`	`55`	`num_threads_ = num_threads != 0 ? num_threads : omp_get_num_procs();`
`56`	`56`	`#else`
`57`	`57`	`if (num_threads_ != 1) {`
`58`		`- PCL_WARN("OpenMP is not available. Keeping number of threads unchanged at 1\n");`
	`58`	`+ PCL_WARN("OpenMP is not available. Setting number of threads to 1\n");`
	`59`	`+ num_threads_ = 1;`
`59`	`60`	`}`
`60`	`61`	`#endif`
`61`	`62`	`}`
Original file line number	Diff line number	Diff line change
`@@ -51,7 +51,8 @@ pcl::NormalEstimationOMP<PointInT, PointOutT>::setNumberOfThreads (unsigned int`
`51`	`51`	`num_threads_ = num_threads != 0 ? num_threads : omp_get_num_procs();`
`52`	`52`	`#else`
`53`	`53`	`if (num_threads_ != 1) {`
`54`		`- PCL_WARN("OpenMP is not available. Keeping number of threads unchanged at 1\n");`
	`54`	`+ PCL_WARN("OpenMP is not available. Setting number of threads to 1\n");`
	`55`	`+ num_threads_ = 1;`
`55`	`56`	`}`
`56`	`57`	`#endif`
`57`	`58`	`}`
Original file line number	Diff line number	Diff line change
`@@ -53,7 +53,8 @@ pcl::PrincipalCurvaturesEstimation<PointInT, PointNT, PointOutT>::setNumberOfThr`
`53`	`53`	`num_threads_ = num_threads != 0 ? num_threads : omp_get_num_procs();`
`54`	`54`	`#else`
`55`	`55`	`if (num_threads_ != 1) {`
`56`		`- PCL_WARN("OpenMP is not available. Keeping number of threads unchanged at 1\n");`
	`56`	`+ PCL_WARN("OpenMP is not available. Setting number of threads to 1\n");`
	`57`	`+ num_threads_ = 1;`
`57`	`58`	`}`
`58`	`59`	`#endif`
`59`	`60`	`}`
Original file line number	Diff line number	Diff line change
`@@ -51,7 +51,8 @@ pcl::SHOTLocalReferenceFrameEstimationOMP<PointInT, PointOutT>::setNumberOfThrea`
`51`	`51`	`num_threads_ = num_threads != 0 ? num_threads : omp_get_num_procs();`
`52`	`52`	`#else`
`53`	`53`	`if (num_threads_ != 1) {`
`54`		`- PCL_WARN("OpenMP is not available. Keeping number of threads unchanged at 1\n");`
	`54`	`+ PCL_WARN("OpenMP is not available. Setting number of threads to 1\n");`
	`55`	`+ num_threads_ = 1;`
`55`	`56`	`}`
`56`	`57`	`#endif`
`57`	`58`	`}`
Original file line number	Diff line number	Diff line change
`@@ -129,7 +129,8 @@ pcl::SHOTEstimationOMP<PointInT, PointNT, PointOutT, PointRFT>::setNumberOfThrea`
`129`	`129`	`num_threads_ = num_threads != 0 ? num_threads : omp_get_num_procs();`
`130`	`130`	`#else`
`131`	`131`	`if (num_threads_ != 1) {`
`132`		`- PCL_WARN("OpenMP is not available. Keeping number of threads unchanged at 1\n");`
	`132`	`+ PCL_WARN("OpenMP is not available. Setting number of threads to 1\n");`
	`133`	`+ num_threads_ = 1;`
`133`	`134`	`}`
`134`	`135`	`#endif`
`135`	`136`	`}`
`@@ -211,7 +212,8 @@ pcl::SHOTColorEstimationOMP<PointInT, PointNT, PointOutT, PointRFT>::setNumberOf`
`211`	`212`	`num_threads_ = num_threads != 0 ? num_threads : omp_get_num_procs();`
`212`	`213`	`#else`
`213`	`214`	`if (num_threads_ != 1) {`
`214`		`- PCL_WARN("OpenMP is not available. Keeping number of threads unchanged at 1\n");`
	`215`	`+ PCL_WARN("OpenMP is not available. Setting number of threads to 1\n");`
	`216`	`+ num_threads_ = 1;`
`215`	`217`	`}`
`216`	`218`	`#endif`
`217`	`219`	`}`
Original file line number	Diff line number	Diff line change
`@@ -84,8 +84,8 @@ namespace pcl`
`84`	`84`	`num_threads_ = num_threads != 0 ? num_threads : omp_get_num_procs();`
`85`	`85`	`#else`
`86`	`86`	`if (num_threads_ != 1) {`
`87`		`- PCL_WARN(`
`88`		`- "OpenMP is not available. Keeping number of threads unchanged at 1\n");`
	`87`	`+ PCL_WARN("OpenMP is not available. Setting number of threads to 1\n");`
	`88`	`+ num_threads_ = 1;`
`89`	`89`	`}`
`90`	`90`	`#endif`
`91`	`91`	`}`
Original file line number	Diff line number	Diff line change
`@@ -130,8 +130,8 @@ namespace pcl`
`130`	`130`	`num_threads_ = num_threads != 0 ? num_threads : omp_get_num_procs();`
`131`	`131`	`#else`
`132`	`132`	`if (num_threads_ != 1) {`
`133`		`- PCL_WARN(`
`134`		`- "OpenMP is not available. Keeping number of threads unchanged at 1\n");`
	`133`	`+ PCL_WARN("OpenMP is not available. Setting number of threads to 1\n");`
	`134`	`+ num_threads_ = 1;`
`135`	`135`	`}`
`136`	`136`	`#endif`
`137`	`137`	`}`
Original file line number	Diff line number	Diff line change
`@@ -220,8 +220,8 @@ namespace pcl`
`220`	`220`	`num_threads_ = num_threads != 0 ? num_threads : omp_get_num_procs();`
`221`	`221`	`#else`
`222`	`222`	`if (num_threads_ != 1) {`
`223`		`- PCL_WARN(`
`224`		`- "OpenMP is not available. Keeping number of threads unchanged at 1\n");`
	`223`	`+ PCL_WARN("OpenMP is not available. Setting number of threads to 1\n");`
	`224`	`+ num_threads_ = 1;`
`225`	`225`	`}`
`226`	`226`	`#endif`
`227`	`227`	`}`