Commit Graph

17 Commits

Author SHA1 Message Date
Gael Guennebaud
8e875d3c38 Memory allocated on the stack is freed at the function exit, so reduce iteration count to avoid stack overflow
(grafted from e51da9c3a8
)
2014-08-04 12:46:00 +02:00
Gael Guennebaud
b74c0a4413 Check that NeedsToAlign is properly sets before checking alignment 2013-01-24 11:42:04 +01:00
Benoit Jacob
69124cfca2 Automatic relicensing to MPL2 using Keirs script. Manual fixup follows. 2012-07-13 14:42:47 -04:00
Gael Guennebaud
bbb4b35dfc test the new stack allocation mechanism 2011-03-19 08:51:38 +01:00
Gael Guennebaud
2359486129 disable testing of aligned members when aligned static allocation is not enabled (e.g., for gcc 3.4) 2011-03-15 09:53:23 +01:00
Benoit Jacob
4716040703 bug #86 : use internal:: namespace instead of ei_ prefix 2010-10-25 10:15:22 -04:00
Gael Guennebaud
28e64b0da3 email change 2010-06-24 23:21:58 +02:00
Benoit Jacob
2840ac7e94 big huge changes, so i dont remember everything.
* renaming, e.g. LU ---> FullPivLU
* split tests framework: more robust, e.g. dont generate empty tests if a number is skipped
* make all remaining tests use that splitting, as needed.
* Fix 4x4 inversion (see stable branch)
* Transform::inverse() and geo_transform test : adapt to new inverse() API, it was also trying to instantiate inverse() for 3x4 matrices.
* CMakeLists: more robust regexp to parse the version number
* misc fixes in unit tests
2009-10-28 18:19:29 -04:00
Benoit Jacob
6347b1db5b remove sentence "Eigen itself is part of the KDE project."
it never made very precise sense. but now does it still make any?
2009-05-22 20:25:33 +02:00
Benoit Jacob
95bda5e6ab let the user disable alignment altogether by #defining EIGEN_DONT_ALIGN.
Until now, the user had to edit the source code to do that.
Internally, add EIGEN_ALIGN that takes into account both EIGEN_DONT_ALIGN.and
EIGEN_ARCH_WANTS_ALIGNMENT. From now on, only EIGEN_ALIGN should be used to
test whether we want to align.
2009-05-03 13:50:56 +00:00
Benoit Jacob
93a089adc8 disable alignment altogether outside of the platforms which potentially have SSE or AltiVec
This should remove most portability issues to other platforms where data alignment issues (including
overloading operator new and new[]) can be tricky, and where data alignment is not needed in the first place.
2009-02-04 16:53:03 +00:00
Benoit Jacob
3efe6e4176 remove ei_new_allocator
remove corresponding part of test_dynalloc
2009-01-10 02:50:09 +00:00
Benoit Jacob
fd831d5a12 * implement handmade aligned malloc, fast but always wastes 16 bytes of memory.
only used as fallback for now, needs benchmarking.
  also notice that some malloc() impls do waste memory to keep track of alignment
  and other stuff (check msdn's page on malloc).
* expand test_dynalloc to cover low level aligned alloc funcs. Remove the old
  #ifdef EIGEN_VECTORIZE...
* rewrite the logic choosing an aligned alloc, some new stuff:
  * malloc() already aligned on freebsd and windows x64 (plus apple already)
  * _mm_malloc() used only if EIGEN_VECTORIZE
  * posix_memalign: correct detection according to man page (not necessarily
    linux specific), don't attempt to declare it if the platform didn't declare it
    (there had to be a reason why it didn't declare it, right?)
2009-01-09 14:56:44 +00:00
Benoit Jacob
eb7dcbbfce EIGEN_MAKE_ALIGNED_OPERATOR_NEW didn't actually need to get the class
name as parameter
2009-01-08 15:37:13 +00:00
Benoit Jacob
1d52bd4cad the big memory changes. the most important changes are:
ei_aligned_malloc now really behaves like a malloc
 (untyped, doesn't call ctor)
ei_aligned_new is the typed variant calling ctor
EIGEN_MAKE_ALIGNED_OPERATOR_NEW now takes the class name as parameter
2009-01-08 15:20:21 +00:00
Gael Guennebaud
75649551c2 compilation fixes with MSVC 2008-09-03 11:26:19 +00:00
Gael Guennebaud
f52d119b9c Solve a big issue with data alignment and dynamic allocation:
* add a WithAlignedOperatorNew class with overloaded operator new
* make Matrix (and Quaternion, Transform, Hyperplane, etc.) use it
  if needed such that "*(new Vector4) = xpr" does not failed anymore.
* Please: make sure your classes having fixed size Eigen's vector
  or matrice attributes inherit WithAlignedOperatorNew
* add a ei_new_allocator STL memory allocator to use with STL containers.
  This allocator really calls operator new on your types (unlike GCC's
  new_allocator). Example:
  std::vector<Vector4f> data(10);
  will segfault if the vectorization is enabled, instead use:
  std::vector<Vector4f,ei_new_allocator<Vector4f> > data(10);
NOTE: you only have to worry if you deal with fixed-size matrix types
with "sizeof(matrix_type)%16==0"...
2008-09-03 00:32:56 +00:00