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Better handling of memory layout and use of detail io functions (thanks to @arvidn comments).

This commit is contained in:
Alden Torres 2015-07-02 21:35:59 -04:00
parent c89f89511b
commit acc130833a
1 changed files with 16 additions and 8 deletions
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24
src/alert.cpp
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@ -1783,14 +1783,18 @@ namespace libtorrent {
: m_alloc(alloc)
, info_hash(ih)
, m_num_peers(peers.size())
, m_peers_idx(alloc.allocate(sizeof(int) * peers.size() * 2))
, m_peers_idx(alloc.allocate(sizeof(boost::int32_t) * peers.size() * 2))
{
for (int i = 0; i < m_num_peers; i++) {
tcp::endpoint endp = peers[i];
int size = endp.size();
int idx = alloc.copy_buffer((char*)endp.data(), size);
memcpy(alloc.ptr(m_peers_idx + sizeof(int) * (2 * i)) , (void*)&idx , sizeof(int));
memcpy(alloc.ptr(m_peers_idx + sizeof(int) * (2 * i + 1)), (void*)&size, sizeof(int));
boost::int32_t size = (boost::int32_t)endp.size();
boost::int32_t idx = (boost::int32_t)alloc.copy_buffer((char*)endp.data(), size);
char* idx_ptr = alloc.ptr(m_peers_idx) + sizeof(boost::int32_t) * (2 * i);
char* size_ptr = idx_ptr + sizeof(boost::int32_t);
detail::write_int32(idx, idx_ptr);
detail::write_int32(size, size_ptr);
}
}
@ -1810,9 +1814,13 @@ namespace libtorrent {
tcp::endpoint dht_get_peers_reply_alert::get_peer(int index) const
{
int idx, size;
memcpy((void*)&idx , m_alloc.ptr(m_peers_idx + sizeof(int) * (2 * index)) , sizeof(int));
memcpy((void*)&size, m_alloc.ptr(m_peers_idx + sizeof(int) * (2 * index + 1)), sizeof(int));
boost::int32_t idx, size;
const char* idx_ptr = m_alloc.ptr(m_peers_idx) + sizeof(boost::int32_t) * (2 * index);
const char* size_ptr = idx_ptr + sizeof(boost::int32_t);
idx = detail::read_int32(idx_ptr);
size = detail::read_int32(size_ptr);
tcp::endpoint endp;