Merge pull request #4270

29dea03 epee: resize vectors where possible in serialization (moneromooo-monero)
76affd9 epee: some speedup in parsing (moneromooo-monero)
dc6c069 db_lmdb: speedup the get_output_distribution common case (moneromooo-monero)
76ac5a8 wallet2: ask for a binary output distribution, for speed (moneromooo-monero)
This commit is contained in:
luigi1111 2018-09-04 13:19:58 -05:00
commit 77ed11e627
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GPG Key ID: F4ACA0183641E010
4 changed files with 29 additions and 3 deletions

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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++));
}

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@ -28,6 +28,8 @@
#pragma once
#include <algorithm>
namespace epee
{
namespace misc_utils
@ -36,8 +38,12 @@ namespace misc_utils
{
inline std::string transform_to_escape_sequence(const std::string& src)
{
//std::stringstream res;
static const char escaped[] = "\b\f\n\r\t\v\"\\/";
if (std::find_first_of(src.begin(), src.end(), escaped, escaped + sizeof(escaped)) == src.end())
return src;
std::string res;
res.reserve(2 * src.size());
for(std::string::const_iterator it = src.begin(); it!=src.end(); ++it)
{
switch(*it)
@ -84,6 +90,7 @@ namespace misc_utils
inline void match_string2(std::string::const_iterator& star_end_string, std::string::const_iterator buf_end, std::string& val)
{
val.clear();
val.reserve(std::distance(star_end_string, buf_end));
bool escape_mode = false;
std::string::const_iterator it = star_end_string;
++it;

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@ -1971,14 +1971,25 @@ std::vector<uint64_t> BlockchainLMDB::get_block_cumulative_rct_outputs(const std
MDB_val v;
uint64_t prev_height = heights[0];
for (uint64_t height: heights)
{
MDB_val_set(v, height);
result = mdb_cursor_get(m_cur_block_info, (MDB_val *)&zerokval, &v, MDB_GET_BOTH);
if (height == prev_height + 1)
{
MDB_val k2;
result = mdb_cursor_get(m_cur_block_info, &k2, &v, MDB_NEXT);
}
else
{
v.mv_size = sizeof(uint64_t);
v.mv_data = (void*)&height;
result = mdb_cursor_get(m_cur_block_info, (MDB_val *)&zerokval, &v, MDB_GET_BOTH);
}
if (result)
throw0(DB_ERROR(lmdb_error("Error attempting to retrieve rct distribution from the db: ", result).c_str()));
const mdb_block_info *bi = (const mdb_block_info *)v.mv_data;
res.push_back(bi->bi_cum_rct);
prev_height = height;
}
TXN_POSTFIX_RDONLY();

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@ -2656,6 +2656,7 @@ bool wallet2::get_rct_distribution(uint64_t &start_height, std::vector<uint64_t>
req.amounts.push_back(0);
req.from_height = 0;
req.cumulative = true;
req.binary = true;
m_daemon_rpc_mutex.lock();
bool r = net_utils::invoke_http_json_rpc("/json_rpc", "get_output_distribution", req, res, m_http_client, rpc_timeout);
m_daemon_rpc_mutex.unlock();
@ -6478,6 +6479,7 @@ void wallet2::get_outs(std::vector<std::vector<tools::wallet2::get_outs_entry>>
req_t.from_height = std::max<uint64_t>(segregation_fork_height, RECENT_OUTPUT_BLOCKS) - RECENT_OUTPUT_BLOCKS;
req_t.to_height = segregation_fork_height + 1;
req_t.cumulative = true;
req_t.binary = true;
m_daemon_rpc_mutex.lock();
bool r = net_utils::invoke_http_json_rpc("/json_rpc", "get_output_distribution", req_t, resp_t, m_http_client, rpc_timeout * 1000);
m_daemon_rpc_mutex.unlock();