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Allows EIGEN_STACK_ALLOCATION_LIMIT to be 0 for no limit

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(transplanted from d9381598bc
)
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 {};
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
* 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.
@ -38,12 +46,12 @@ struct 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)
{
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()
{
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)
{
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.
- \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
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