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Merged in dr15jones/eigen (pull request PR-146)

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Use a class constructor to initialize CPU cache sizes
This commit is contained in:
Gael Guennebaud 2015-11-22 22:50:31 +01:00
commit 82bd4e546a
1 changed files with 22 additions and 19 deletions
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41
Eigen/src/Core/products/GeneralBlockPanelKernel.h
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@ -36,37 +36,40 @@ const std::ptrdiff_t defaultL3CacheSize = 512*1024;
#endif #endif
/** \internal */ /** \internal */
inline void manage_caching_sizes(Action action, std::ptrdiff_t* l1, std::ptrdiff_t* l2, std::ptrdiff_t* l3) struct CacheSizes {
{ CacheSizes(): m_l1(-1),m_l2(-1),m_l3(-1) {
static bool m_cache_sizes_initialized = false;
static std::ptrdiff_t m_l1CacheSize = 0;
static std::ptrdiff_t m_l2CacheSize = 0;
static std::ptrdiff_t m_l3CacheSize = 0;
if(!m_cache_sizes_initialized)
{
int l1CacheSize, l2CacheSize, l3CacheSize; int l1CacheSize, l2CacheSize, l3CacheSize;
queryCacheSizes(l1CacheSize, l2CacheSize, l3CacheSize); queryCacheSizes(l1CacheSize, l2CacheSize, l3CacheSize);
m_l1CacheSize = manage_caching_sizes_helper(l1CacheSize, defaultL1CacheSize); m_l1 = manage_caching_sizes_helper(l1CacheSize, defaultL1CacheSize);
m_l2CacheSize = manage_caching_sizes_helper(l2CacheSize, defaultL2CacheSize); m_l2 = manage_caching_sizes_helper(l2CacheSize, defaultL2CacheSize);
m_l3CacheSize = manage_caching_sizes_helper(l3CacheSize, defaultL3CacheSize); m_l3 = manage_caching_sizes_helper(l3CacheSize, defaultL3CacheSize);
m_cache_sizes_initialized = true;
} }
std::ptrdiff_t m_l1;
std::ptrdiff_t m_l2;
std::ptrdiff_t m_l3;
};
/** \internal */
inline void manage_caching_sizes(Action action, std::ptrdiff_t* l1, std::ptrdiff_t* l2, std::ptrdiff_t* l3)
{
static CacheSizes m_cacheSizes;
if(action==SetAction) if(action==SetAction)
{ {
// set the cpu cache size and cache all block sizes from a global cache size in byte // set the cpu cache size and cache all block sizes from a global cache size in byte
eigen_internal_assert(l1!=0 && l2!=0); eigen_internal_assert(l1!=0 && l2!=0);
m_l1CacheSize = *l1; m_cacheSizes.m_l1 = *l1;
m_l2CacheSize = *l2; m_cacheSizes.m_l2 = *l2;
m_l3CacheSize = *l3; m_cacheSizes.m_l3 = *l3;
} }
else if(action==GetAction) else if(action==GetAction)
{ {
eigen_internal_assert(l1!=0 && l2!=0); eigen_internal_assert(l1!=0 && l2!=0);
*l1 = m_l1CacheSize; *l1 = m_cacheSizes.m_l1;
*l2 = m_l2CacheSize; *l2 = m_cacheSizes.m_l2;
*l3 = m_l3CacheSize; *l3 = m_cacheSizes.m_l3;
} }
else else
{ {