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add reallocate() function and use it in bit_vector and vector containers

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give a speedup of 1-4%

Signed-off-by: Nuno Lopes <a-nlopes@microsoft.com>
This commit is contained in:
Nuno Lopes 2015-03-10 16:53:47 +00:00
parent 55ca6ce44b
commit 44e647e72b
5 changed files with 51 additions and 18 deletions
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10
src/util/bit_vector.cpp
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@ -25,13 +25,11 @@ Revision History:
#define MK_MASK(_num_bits_) ((1U << _num_bits_) - 1)
void bit_vector::expand_to(unsigned new_capacity) {
unsigned * new_data = alloc_svect(unsigned, new_capacity);
memset(new_data, 0, new_capacity * sizeof(unsigned));
if (m_capacity > 0) {
memcpy(new_data, m_data, m_capacity * sizeof(unsigned));
dealloc_svect(m_data);
if (m_data) {
m_data = (unsigned*)memory::reallocate(m_data, new_capacity * sizeof(unsigned));
} else {
m_data = alloc_svect(unsigned, new_capacity);
}
m_data = new_data;
m_capacity = new_capacity;
}