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epee: resize vectors where possible in serialization

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to avoid unnecessary repeated reallocation
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moneromooo-monero 2018-08-16 18:15:07 +00:00
parent b780cf4db1
commit 29dea03091
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1 changed files with 6 additions and 0 deletions
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6
contrib/epee/include/serialization/keyvalue_serialization_overloads.h
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@ -35,6 +35,11 @@
namespace epee
{
namespace
{
template<class C> void hint_resize(C &container, size_t size) {}
template<class C> void hint_resize(std::vector<C> &container, size_t size) { container.reserve(size); }
}
namespace serialization
{
@ -158,6 +163,7 @@ namespace epee
false,
"size in blob " << loaded_size << " not have not zero modulo for sizeof(value_type) = " << sizeof(typename stl_container::value_type) << ", type " << typeid(typename stl_container::value_type).name());
size_t count = (loaded_size/sizeof(typename stl_container::value_type));
hint_resize(container, count);
for(size_t i = 0; i < count; i++)
container.insert(container.end(), *(pelem++));
}