tree 8e14f47c8332539e13814f81d918b67ff2d50272
parent c6cf24cb1bfe205173fb9f41b7cf929c57745113
author Alex Stewart <alexs.mac@gmail.com> 1525265437 +0100
committer Alex Stewart <alexs.mac@gmail.com> 1525265437 +0100

Add no-threads ParallelFor implementation.

- When Ceres was configured without any multithreading enabled (actually
  the default) it would fail to build due to undefined symbols for
  ParallelFor() as there was no implementation for that case.
- This adds a trivial single-threaded implementation for that case,
  taken from the C++11 threads implementation.

Change-Id: Ib3cfd620842b09f1acafe95b8b0ba3aee4587581