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Allows EIGEN_STACK_ALLOCATION_LIMIT to be 0 for no limit

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(transplanted from d9381598bc8f4bb81f90125d347d4329f57e5aff
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This commit is contained in:
Gael Guennebaud 2013-08-21 14:29:00 +02:00
parent 3c5e82ee0b
commit 43c2747e92
2 changed files with 13 additions and 5 deletions
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16
Eigen/src/Core/DenseStorage.h
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@ -24,6 +24,14 @@ namespace internal {
struct constructor_without_unaligned_array_assert {}; struct constructor_without_unaligned_array_assert {};
template<typename T, int Size> void check_static_allocation_size()
{
// if EIGEN_STACK_ALLOCATION_LIMIT is defined to 0, then no limit
#if EIGEN_STACK_ALLOCATION_LIMIT
EIGEN_STATIC_ASSERT(Size * sizeof(T) <= EIGEN_STACK_ALLOCATION_LIMIT, OBJECT_ALLOCATED_ON_STACK_IS_TOO_BIG);
#endif
}
/** \internal /** \internal
* Static array. If the MatrixOrArrayOptions require auto-alignment, the array will be automatically aligned: * Static array. If the MatrixOrArrayOptions require auto-alignment, the array will be automatically aligned:
* to 16 bytes boundary if the total size is a multiple of 16 bytes. * to 16 bytes boundary if the total size is a multiple of 16 bytes.
@ -38,12 +46,12 @@ struct plain_array
plain_array() plain_array()
{ {
EIGEN_STATIC_ASSERT(Size * sizeof(T) <= EIGEN_STACK_ALLOCATION_LIMIT, OBJECT_ALLOCATED_ON_STACK_IS_TOO_BIG); check_static_allocation_size<T,Size>();
} }
plain_array(constructor_without_unaligned_array_assert) plain_array(constructor_without_unaligned_array_assert)
{ {
EIGEN_STATIC_ASSERT(Size * sizeof(T) <= EIGEN_STACK_ALLOCATION_LIMIT, OBJECT_ALLOCATED_ON_STACK_IS_TOO_BIG); check_static_allocation_size<T,Size>();
} }
}; };
@ -76,12 +84,12 @@ struct plain_array<T, Size, MatrixOrArrayOptions, 16>
plain_array() plain_array()
{ {
EIGEN_MAKE_UNALIGNED_ARRAY_ASSERT(0xf); EIGEN_MAKE_UNALIGNED_ARRAY_ASSERT(0xf);
EIGEN_STATIC_ASSERT(Size * sizeof(T) <= EIGEN_STACK_ALLOCATION_LIMIT, OBJECT_ALLOCATED_ON_STACK_IS_TOO_BIG); check_static_allocation_size<T,Size>();
} }
plain_array(constructor_without_unaligned_array_assert) plain_array(constructor_without_unaligned_array_assert)
{ {
EIGEN_STATIC_ASSERT(Size * sizeof(T) <= EIGEN_STACK_ALLOCATION_LIMIT, OBJECT_ALLOCATED_ON_STACK_IS_TOO_BIG); check_static_allocation_size<T,Size>();
} }
}; };

2
doc/PreprocessorDirectives.dox
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@ -72,7 +72,7 @@ run time. However, these assertions do cost time and can thus be turned off.
correspond to the number of iterations or the number of instructions. The default is value 100. correspond to the number of iterations or the number of instructions. The default is value 100.
- \b EIGEN_STACK_ALLOCATION_LIMIT - defines the maximum bytes for a buffer to be allocated on the stack. For internal - \b EIGEN_STACK_ALLOCATION_LIMIT - defines the maximum bytes for a buffer to be allocated on the stack. For internal
temporary buffers, dynamic memory allocation is employed as a fall back. For fixed-size matrices or arrays, exceeding temporary buffers, dynamic memory allocation is employed as a fall back. For fixed-size matrices or arrays, exceeding
this threshold raises a compile time assertion. Default is 128 KB. this threshold raises a compile time assertion. Use 0 to set no limit. Default is 128 KB.
\section TopicPreprocessorDirectivesPlugins Plugins \section TopicPreprocessorDirectivesPlugins Plugins