std::size_t
Contractor::WriteContractedGraph(unsigned max_node_id,
const util::DeallocatingVector<QueryEdge> &contracted_edge_list)
{
// Sorting contracted edges in a way that the static query graph can read some in in-place.
tbb::parallel_sort(contracted_edge_list.begin(), contracted_edge_list.end());
const unsigned contracted_edge_count = contracted_edge_list.size();
util::SimpleLogger().Write() << "Serializing compacted graph of " << contracted_edge_count
<< " edges";
const util::FingerPrint fingerprint = util::FingerPrint::GetValid();
boost::filesystem::ofstream hsgr_output_stream(config.graph_output_path, std::ios::binary);
hsgr_output_stream.write((char *)&fingerprint, sizeof(util::FingerPrint));
const NodeID max_used_node_id = [&contracted_edge_list] {
NodeID tmp_max = 0;
for (const QueryEdge &edge : contracted_edge_list)
{
BOOST_ASSERT(SPECIAL_NODEID != edge.source);
BOOST_ASSERT(SPECIAL_NODEID != edge.target);
tmp_max = std::max(tmp_max, edge.source);
tmp_max = std::max(tmp_max, edge.target);
}
return tmp_max;
}();
util::SimpleLogger().Write(logDEBUG) << "input graph has " << (max_node_id + 1) << " nodes";
util::SimpleLogger().Write(logDEBUG) << "contracted graph has " << (max_used_node_id + 1)
<< " nodes";
std::vector<util::StaticGraph<EdgeData>::NodeArrayEntry> node_array;
// make sure we have at least one sentinel
node_array.resize(max_node_id + 2);
util::SimpleLogger().Write() << "Building node array";
util::StaticGraph<EdgeData>::EdgeIterator edge = 0;
util::StaticGraph<EdgeData>::EdgeIterator position = 0;
util::StaticGraph<EdgeData>::EdgeIterator last_edge;
// initializing 'first_edge'-field of nodes:
for (const auto node : util::irange(0u, max_used_node_id + 1))
{
last_edge = edge;
while ((edge < contracted_edge_count) && (contracted_edge_list[edge].source == node))
{
++edge;
}
node_array[node].first_edge = position; //=edge
position += edge - last_edge; // remove
}
for (const auto sentinel_counter :
util::irange<unsigned>(max_used_node_id + 1, node_array.size()))
{
// sentinel element, guarded against underflow
node_array[sentinel_counter].first_edge = contracted_edge_count;
}
util::SimpleLogger().Write() << "Serializing node array";
RangebasedCRC32 crc32_calculator;
const unsigned edges_crc32 = crc32_calculator(contracted_edge_list);
util::SimpleLogger().Write() << "Writing CRC32: " << edges_crc32;
const unsigned node_array_size = node_array.size();
// serialize crc32, aka checksum
hsgr_output_stream.write((char *)&edges_crc32, sizeof(unsigned));
// serialize number of nodes
hsgr_output_stream.write((char *)&node_array_size, sizeof(unsigned));
// serialize number of edges
hsgr_output_stream.write((char *)&contracted_edge_count, sizeof(unsigned));
// serialize all nodes
if (node_array_size > 0)
{
hsgr_output_stream.write((char *)&node_array[0],
sizeof(util::StaticGraph<EdgeData>::NodeArrayEntry) *
node_array_size);
}
// serialize all edges
util::SimpleLogger().Write() << "Building edge array";
std::size_t number_of_used_edges = 0;
util::StaticGraph<EdgeData>::EdgeArrayEntry current_edge;
for (const auto edge : util::irange<std::size_t>(0UL, contracted_edge_list.size()))
{
// some self-loops are required for oneway handling. Need to assertthat we only keep these
// (TODO)
// no eigen loops
// BOOST_ASSERT(contracted_edge_list[edge].source != contracted_edge_list[edge].target ||
// node_represents_oneway[contracted_edge_list[edge].source]);
current_edge.target = contracted_edge_list[edge].target;
current_edge.data = contracted_edge_list[edge].data;
// every target needs to be valid
BOOST_ASSERT(current_edge.target <= max_used_node_id);
#ifndef NDEBUG
if (current_edge.data.distance <= 0)
{
util::SimpleLogger().Write(logWARNING)
<< "Edge: " << edge << ",source: " << contracted_edge_list[edge].source
<< ", target: " << contracted_edge_list[edge].target
<< ", dist: " << current_edge.data.distance;
util::SimpleLogger().Write(logWARNING) << "Failed at adjacency list of node "
<< contracted_edge_list[edge].source << "/"
<< node_array.size() - 1;
return 1;
}
#endif
hsgr_output_stream.write((char *)¤t_edge,
sizeof(util::StaticGraph<EdgeData>::EdgeArrayEntry));
++number_of_used_edges;
}
return number_of_used_edges;
}
int main(int argc, char *argv[])
{
try
{
LogPolicy::GetInstance().Unmute();
TIMER_START(preparing);
TIMER_START(expansion);
boost::filesystem::path config_file_path, input_path, restrictions_path, profile_path;
unsigned int requested_num_threads;
bool use_elevation;
// declare a group of options that will be allowed only on command line
boost::program_options::options_description generic_options("Options");
generic_options.add_options()("version,v", "Show version")("help,h",
"Show this help message")(
"config,c",
boost::program_options::value<boost::filesystem::path>(&config_file_path)
->default_value("contractor.ini"),
"Path to a configuration file.");
// declare a group of options that will be allowed both on command line and in config file
boost::program_options::options_description config_options("Configuration");
config_options.add_options()(
"restrictions,r",
boost::program_options::value<boost::filesystem::path>(&restrictions_path),
"Restrictions file in .osrm.restrictions format")(
"profile,p",
boost::program_options::value<boost::filesystem::path>(&profile_path)
->default_value("profile.lua"),"Path to LUA routing profile")(
"elevation,e", boost::program_options::value<bool>(&use_elevation)->default_value(true),
"Process node elevations")(
"threads,t",
boost::program_options::value<unsigned int>(&requested_num_threads)->default_value(tbb::task_scheduler_init::default_num_threads()),
"Number of threads to use");
// hidden options, will be allowed both on command line and in config file, but will not be
// shown to the user
boost::program_options::options_description hidden_options("Hidden options");
hidden_options.add_options()(
"input,i",
boost::program_options::value<boost::filesystem::path>(&input_path),
"Input file in .osm, .osm.bz2 or .osm.pbf format");
// positional option
boost::program_options::positional_options_description positional_options;
positional_options.add("input", 1);
// combine above options for parsing
boost::program_options::options_description cmdline_options;
cmdline_options.add(generic_options).add(config_options).add(hidden_options);
boost::program_options::options_description config_file_options;
config_file_options.add(config_options).add(hidden_options);
boost::program_options::options_description visible_options(
"Usage: " + boost::filesystem::basename(argv[0]) + " <input.osrm> [options]");
visible_options.add(generic_options).add(config_options);
// parse command line options
boost::program_options::variables_map option_variables;
boost::program_options::store(boost::program_options::command_line_parser(argc, argv)
.options(cmdline_options)
.positional(positional_options)
.run(),
option_variables);
if (option_variables.count("version"))
{
SimpleLogger().Write() << g_GIT_DESCRIPTION;
return 0;
}
if (option_variables.count("help"))
{
SimpleLogger().Write() << "\n" << visible_options;
return 0;
}
boost::program_options::notify(option_variables);
if (!option_variables.count("restrictions"))
{
restrictions_path = std::string(input_path.string() + ".restrictions");
}
if (!option_variables.count("input"))
{
SimpleLogger().Write() << "\n" << visible_options;
return 0;
}
if (!boost::filesystem::is_regular_file(input_path))
{
SimpleLogger().Write(logWARNING) << "Input file " << input_path.string()
<< " not found!";
return 1;
}
if (!boost::filesystem::is_regular_file(profile_path))
{
SimpleLogger().Write(logWARNING) << "Profile " << profile_path.string()
<< " not found!";
return 1;
}
if (1 > requested_num_threads)
{
SimpleLogger().Write(logWARNING) << "Number of threads must be 1 or larger";
return 1;
}
const unsigned recommended_num_threads = tbb::task_scheduler_init::default_num_threads();
SimpleLogger().Write() << "Input file: " << input_path.filename().string();
SimpleLogger().Write() << "Restrictions file: " << restrictions_path.filename().string();
SimpleLogger().Write() << "Profile: " << profile_path.filename().string();
SimpleLogger().Write() << "Using elevation: " << use_elevation;
SimpleLogger().Write() << "Threads: " << requested_num_threads;
if (recommended_num_threads != requested_num_threads)
{
SimpleLogger().Write(logWARNING) << "The recommended number of threads is "
<< recommended_num_threads
<< "! This setting may have performance side-effects.";
}
tbb::task_scheduler_init init(requested_num_threads);
LogPolicy::GetInstance().Unmute();
boost::filesystem::ifstream restriction_stream(restrictions_path, std::ios::binary);
TurnRestriction restriction;
FingerPrint fingerprint_loaded, fingerprint_orig;
unsigned number_of_usable_restrictions = 0;
restriction_stream.read((char *)&fingerprint_loaded, sizeof(FingerPrint));
if (!fingerprint_loaded.TestPrepare(fingerprint_orig))
{
SimpleLogger().Write(logWARNING) << ".restrictions was prepared with different build.\n"
"Reprocess to get rid of this warning.";
}
restriction_stream.read((char *)&number_of_usable_restrictions, sizeof(unsigned));
restriction_list.resize(number_of_usable_restrictions);
if (number_of_usable_restrictions > 0)
{
restriction_stream.read((char *)&(restriction_list[0]),
number_of_usable_restrictions * sizeof(TurnRestriction));
}
restriction_stream.close();
boost::filesystem::ifstream in;
in.open(input_path, std::ios::in | std::ios::binary);
const std::string node_filename = input_path.string() + ".nodes";
const std::string edge_out = input_path.string() + ".edges";
const std::string geometry_filename = input_path.string() + ".geometry";
const std::string graphOut = input_path.string() + ".hsgr";
const std::string rtree_nodes_path = input_path.string() + ".ramIndex";
const std::string rtree_leafs_path = input_path.string() + ".fileIndex";
/*** Setup Scripting Environment ***/
// Create a new lua state
lua_State *lua_state = luaL_newstate();
// Connect LuaBind to this lua state
luabind::open(lua_state);
// open utility libraries string library;
luaL_openlibs(lua_state);
// adjust lua load path
luaAddScriptFolderToLoadPath(lua_state, profile_path.string().c_str());
// Now call our function in a lua script
if (0 != luaL_dofile(lua_state, profile_path.string().c_str()))
{
std::cerr << lua_tostring(lua_state, -1) << " occured in scripting block" << std::endl;
return 1;
}
EdgeBasedGraphFactory::SpeedProfileProperties speed_profile;
if (0 != luaL_dostring(lua_state, "return traffic_signal_penalty\n"))
{
std::cerr << lua_tostring(lua_state, -1) << " occured in scripting block" << std::endl;
return 1;
}
speed_profile.trafficSignalPenalty = 10 * lua_tointeger(lua_state, -1);
SimpleLogger().Write(logDEBUG)
<< "traffic_signal_penalty: " << speed_profile.trafficSignalPenalty;
if (0 != luaL_dostring(lua_state, "return u_turn_penalty\n"))
{
std::cerr << lua_tostring(lua_state, -1) << " occured in scripting block" << std::endl;
return 1;
}
speed_profile.uTurnPenalty = 10 * lua_tointeger(lua_state, -1);
speed_profile.has_turn_penalty_function = lua_function_exists(lua_state, "turn_function");
#ifdef WIN32
#pragma message ("Memory consumption on Windows can be higher due to memory alignment")
#else
static_assert(sizeof(ImportEdge) == 20,
"changing ImportEdge type has influence on memory consumption!");
#endif
std::vector<ImportEdge> edge_list;
NodeID number_of_node_based_nodes =
readBinaryOSRMGraphFromStream(in,
edge_list,
barrier_node_list,
traffic_light_list,
&internal_to_external_node_map,
restriction_list,
use_elevation);
in.close();
if (edge_list.empty())
{
SimpleLogger().Write(logWARNING) << "The input data is empty, exiting.";
return 1;
}
SimpleLogger().Write() << restriction_list.size() << " restrictions, "
<< barrier_node_list.size() << " bollard nodes, "
<< traffic_light_list.size() << " traffic lights";
/***
* Building an edge-expanded graph from node-based input and turn restrictions
*/
SimpleLogger().Write() << "Generating edge-expanded graph representation";
std::shared_ptr<NodeBasedDynamicGraph> node_based_graph =
NodeBasedDynamicGraphFromImportEdges(number_of_node_based_nodes, edge_list);
std::unique_ptr<RestrictionMap> restriction_map =
std::unique_ptr<RestrictionMap>(new RestrictionMap(node_based_graph, restriction_list));
EdgeBasedGraphFactory *edge_based_graph_factor =
new EdgeBasedGraphFactory(node_based_graph,
std::move(restriction_map),
barrier_node_list,
traffic_light_list,
internal_to_external_node_map,
speed_profile);
edge_list.clear();
edge_list.shrink_to_fit();
edge_based_graph_factor->Run(edge_out, geometry_filename, lua_state);
restriction_list.clear();
restriction_list.shrink_to_fit();
barrier_node_list.clear();
barrier_node_list.shrink_to_fit();
traffic_light_list.clear();
traffic_light_list.shrink_to_fit();
unsigned number_of_edge_based_nodes = edge_based_graph_factor->GetNumberOfEdgeBasedNodes();
BOOST_ASSERT(number_of_edge_based_nodes != std::numeric_limits<unsigned>::max());
DeallocatingVector<EdgeBasedEdge> edgeBasedEdgeList;
#ifndef WIN32
static_assert(sizeof(EdgeBasedEdge) == 16,
"changing ImportEdge type has influence on memory consumption!");
#endif
edge_based_graph_factor->GetEdgeBasedEdges(edgeBasedEdgeList);
std::vector<EdgeBasedNode> node_based_edge_list;
edge_based_graph_factor->GetEdgeBasedNodes(node_based_edge_list);
delete edge_based_graph_factor;
// TODO actually use scoping: Split this up in subfunctions
node_based_graph.reset();
TIMER_STOP(expansion);
// Building grid-like nearest-neighbor data structure
SimpleLogger().Write() << "building r-tree ...";
StaticRTree<EdgeBasedNode> *rtree =
new StaticRTree<EdgeBasedNode>(node_based_edge_list,
rtree_nodes_path.c_str(),
rtree_leafs_path.c_str(),
internal_to_external_node_map);
delete rtree;
IteratorbasedCRC32<std::vector<EdgeBasedNode>> crc32;
unsigned node_based_edge_list_CRC32 =
crc32(node_based_edge_list.begin(), node_based_edge_list.end());
node_based_edge_list.clear();
node_based_edge_list.shrink_to_fit();
SimpleLogger().Write() << "CRC32: " << node_based_edge_list_CRC32;
/***
* Writing info on original (node-based) nodes
*/
SimpleLogger().Write() << "writing node map ...";
boost::filesystem::ofstream node_stream(node_filename, std::ios::binary);
const unsigned size_of_mapping = internal_to_external_node_map.size();
node_stream.write((char *)&size_of_mapping, sizeof(unsigned));
if (size_of_mapping > 0)
{
node_stream.write((char *)&(internal_to_external_node_map[0]),
size_of_mapping * sizeof(NodeInfo));
}
node_stream.close();
internal_to_external_node_map.clear();
internal_to_external_node_map.shrink_to_fit();
/***
* Contracting the edge-expanded graph
*/
SimpleLogger().Write() << "initializing contractor";
Contractor *contractor = new Contractor(number_of_edge_based_nodes, edgeBasedEdgeList);
TIMER_START(contraction);
contractor->Run();
TIMER_STOP(contraction);
SimpleLogger().Write() << "Contraction took " << TIMER_SEC(contraction) << " sec";
DeallocatingVector<QueryEdge> contracted_edge_list;
contractor->GetEdges(contracted_edge_list);
delete contractor;
/***
* Sorting contracted edges in a way that the static query graph can read some in in-place.
*/
std::sort(contracted_edge_list.begin(), contracted_edge_list.end());
unsigned max_used_node_id = 0;
unsigned contracted_edge_count = contracted_edge_list.size();
SimpleLogger().Write() << "Serializing compacted graph of " << contracted_edge_count
<< " edges";
boost::filesystem::ofstream hsgr_output_stream(graphOut, std::ios::binary);
hsgr_output_stream.write((char *)&fingerprint_orig, sizeof(FingerPrint));
for (const QueryEdge &edge : contracted_edge_list)
{
BOOST_ASSERT(UINT_MAX != edge.source);
BOOST_ASSERT(UINT_MAX != edge.target);
max_used_node_id = std::max(max_used_node_id, edge.source);
max_used_node_id = std::max(max_used_node_id, edge.target);
}
SimpleLogger().Write(logDEBUG) << "input graph has " << number_of_edge_based_nodes
<< " nodes";
SimpleLogger().Write(logDEBUG) << "contracted graph has " << max_used_node_id << " nodes";
max_used_node_id += 1;
std::vector<StaticGraph<EdgeData>::NodeArrayEntry> node_array;
node_array.resize(number_of_edge_based_nodes + 1);
SimpleLogger().Write() << "Building node array";
StaticGraph<EdgeData>::EdgeIterator edge = 0;
StaticGraph<EdgeData>::EdgeIterator position = 0;
StaticGraph<EdgeData>::EdgeIterator last_edge = edge;
for (StaticGraph<EdgeData>::NodeIterator node = 0; node < max_used_node_id; ++node)
{
last_edge = edge;
while ((edge < contracted_edge_count) && (contracted_edge_list[edge].source == node))
{
++edge;
}
node_array[node].first_edge = position; //=edge
position += edge - last_edge; // remove
}
for (unsigned sentinel_counter = max_used_node_id; sentinel_counter != node_array.size();
++sentinel_counter)
{
// sentinel element, guarded against underflow
node_array[sentinel_counter].first_edge = contracted_edge_count;
}
unsigned node_array_size = node_array.size();
// serialize crc32, aka checksum
hsgr_output_stream.write((char *)&node_based_edge_list_CRC32, sizeof(unsigned));
// serialize number of nodes
hsgr_output_stream.write((char *)&node_array_size, sizeof(unsigned));
// serialize number of edges
hsgr_output_stream.write((char *)&contracted_edge_count, sizeof(unsigned));
// serialize all nodes
if (node_array_size > 0)
{
hsgr_output_stream.write((char *)&node_array[0],
sizeof(StaticGraph<EdgeData>::NodeArrayEntry) * node_array_size);
}
// serialize all edges
SimpleLogger().Write() << "Building edge array";
edge = 0;
int number_of_used_edges = 0;
StaticGraph<EdgeData>::EdgeArrayEntry current_edge;
for (unsigned edge = 0; edge < contracted_edge_list.size(); ++edge)
{
// no eigen loops
BOOST_ASSERT(contracted_edge_list[edge].source != contracted_edge_list[edge].target);
current_edge.target = contracted_edge_list[edge].target;
current_edge.data = contracted_edge_list[edge].data;
// every target needs to be valid
BOOST_ASSERT(current_edge.target < max_used_node_id);
#ifndef NDEBUG
if (current_edge.data.distance <= 0)
{
SimpleLogger().Write(logWARNING)
<< "Edge: " << edge << ",source: " << contracted_edge_list[edge].source
<< ", target: " << contracted_edge_list[edge].target
<< ", dist: " << current_edge.data.distance;
SimpleLogger().Write(logWARNING) << "Failed at adjacency list of node "
<< contracted_edge_list[edge].source << "/"
<< node_array.size() - 1;
return 1;
}
#endif
hsgr_output_stream.write((char *)¤t_edge,
sizeof(StaticGraph<EdgeData>::EdgeArrayEntry));
++number_of_used_edges;
}
hsgr_output_stream.close();
TIMER_STOP(preparing);
SimpleLogger().Write() << "Preprocessing : " << TIMER_SEC(preparing) << " seconds";
SimpleLogger().Write() << "Expansion : "
<< (number_of_node_based_nodes / TIMER_SEC(expansion))
<< " nodes/sec and "
<< (number_of_edge_based_nodes / TIMER_SEC(expansion))
<< " edges/sec";
SimpleLogger().Write() << "Contraction: "
<< (number_of_edge_based_nodes / TIMER_SEC(contraction))
<< " nodes/sec and "
<< number_of_used_edges / TIMER_SEC(contraction)
<< " edges/sec";
node_array.clear();
SimpleLogger().Write() << "finished preprocessing";
}
catch (boost::program_options::too_many_positional_options_error &)
{
SimpleLogger().Write(logWARNING) << "Only one file can be specified";
return 1;
}
catch (boost::program_options::error &e)
{
SimpleLogger().Write(logWARNING) << e.what();
return 1;
}
catch (const std::exception &e)
{
SimpleLogger().Write(logWARNING) << "Exception occured: " << e.what() << std::endl;
return 1;
}
return 0;
}
int Prepare::Process(int argc, char *argv[])
{
LogPolicy::GetInstance().Unmute();
TIMER_START(preparing);
TIMER_START(expansion);
if (!ParseArguments(argc, argv))
{
return 0;
}
if (!boost::filesystem::is_regular_file(input_path))
{
SimpleLogger().Write(logWARNING) << "Input file " << input_path.string() << " not found!";
return 1;
}
if (!boost::filesystem::is_regular_file(profile_path))
{
SimpleLogger().Write(logWARNING) << "Profile " << profile_path.string() << " not found!";
return 1;
}
if (1 > requested_num_threads)
{
SimpleLogger().Write(logWARNING) << "Number of threads must be 1 or larger";
return 1;
}
const unsigned recommended_num_threads = tbb::task_scheduler_init::default_num_threads();
SimpleLogger().Write() << "Input file: " << input_path.filename().string();
SimpleLogger().Write() << "Restrictions file: " << restrictions_path.filename().string();
SimpleLogger().Write() << "Profile: " << profile_path.filename().string();
SimpleLogger().Write() << "Threads: " << requested_num_threads;
if (recommended_num_threads != requested_num_threads)
{
SimpleLogger().Write(logWARNING) << "The recommended number of threads is "
<< recommended_num_threads
<< "! This setting may have performance side-effects.";
}
tbb::task_scheduler_init init(requested_num_threads);
LogPolicy::GetInstance().Unmute();
FingerPrint fingerprint_orig;
CheckRestrictionsFile(fingerprint_orig);
boost::filesystem::ifstream input_stream(input_path, std::ios::in | std::ios::binary);
node_filename = input_path.string() + ".nodes";
edge_out = input_path.string() + ".edges";
geometry_filename = input_path.string() + ".geometry";
graph_out = input_path.string() + ".hsgr";
rtree_nodes_path = input_path.string() + ".ramIndex";
rtree_leafs_path = input_path.string() + ".fileIndex";
/*** Setup Scripting Environment ***/
// Create a new lua state
lua_State *lua_state = luaL_newstate();
// Connect LuaBind to this lua state
luabind::open(lua_state);
EdgeBasedGraphFactory::SpeedProfileProperties speed_profile;
if (!SetupScriptingEnvironment(lua_state, speed_profile))
{
return 1;
}
#ifdef WIN32
#pragma message("Memory consumption on Windows can be higher due to different bit packing")
#else
static_assert(sizeof(ImportEdge) == 20,
"changing ImportEdge type has influence on memory consumption!");
#endif
NodeID number_of_node_based_nodes =
readBinaryOSRMGraphFromStream(input_stream,
edge_list,
barrier_node_list,
traffic_light_list,
&internal_to_external_node_map,
restriction_list);
input_stream.close();
if (edge_list.empty())
{
SimpleLogger().Write(logWARNING) << "The input data is empty, exiting.";
return 1;
}
SimpleLogger().Write() << restriction_list.size() << " restrictions, "
<< barrier_node_list.size() << " bollard nodes, "
<< traffic_light_list.size() << " traffic lights";
std::vector<EdgeBasedNode> node_based_edge_list;
unsigned number_of_edge_based_nodes = 0;
DeallocatingVector<EdgeBasedEdge> edge_based_edge_list;
// init node_based_edge_list, edge_based_edge_list by edgeList
number_of_edge_based_nodes = BuildEdgeExpandedGraph(lua_state,
number_of_node_based_nodes,
node_based_edge_list,
edge_based_edge_list,
speed_profile);
lua_close(lua_state);
TIMER_STOP(expansion);
BuildRTree(node_based_edge_list);
IteratorbasedCRC32<std::vector<EdgeBasedNode>> crc32;
const unsigned node_based_edge_list_CRC32 =
crc32(node_based_edge_list.begin(), node_based_edge_list.end());
node_based_edge_list.clear();
node_based_edge_list.shrink_to_fit();
SimpleLogger().Write() << "CRC32: " << node_based_edge_list_CRC32;
WriteNodeMapping();
/***
* Contracting the edge-expanded graph
*/
SimpleLogger().Write() << "initializing contractor";
Contractor *contractor = new Contractor(number_of_edge_based_nodes, edge_based_edge_list);
TIMER_START(contraction);
contractor->Run();
TIMER_STOP(contraction);
SimpleLogger().Write() << "Contraction took " << TIMER_SEC(contraction) << " sec";
DeallocatingVector<QueryEdge> contracted_edge_list;
contractor->GetEdges(contracted_edge_list);
delete contractor;
/***
* Sorting contracted edges in a way that the static query graph can read some in in-place.
*/
tbb::parallel_sort(contracted_edge_list.begin(), contracted_edge_list.end());
const unsigned contracted_edge_count = contracted_edge_list.size();
SimpleLogger().Write() << "Serializing compacted graph of " << contracted_edge_count
<< " edges";
boost::filesystem::ofstream hsgr_output_stream(graph_out, std::ios::binary);
hsgr_output_stream.write((char *)&fingerprint_orig, sizeof(FingerPrint));
const unsigned max_used_node_id = 1 + [&contracted_edge_list]
{
unsigned tmp_max = 0;
for (const QueryEdge &edge : contracted_edge_list)
{
BOOST_ASSERT(SPECIAL_NODEID != edge.source);
BOOST_ASSERT(SPECIAL_NODEID != edge.target);
tmp_max = std::max(tmp_max, edge.source);
tmp_max = std::max(tmp_max, edge.target);
}
return tmp_max;
}();
SimpleLogger().Write(logDEBUG) << "input graph has " << number_of_edge_based_nodes << " nodes";
SimpleLogger().Write(logDEBUG) << "contracted graph has " << max_used_node_id << " nodes";
std::vector<StaticGraph<EdgeData>::NodeArrayEntry> node_array;
node_array.resize(number_of_edge_based_nodes + 1);
SimpleLogger().Write() << "Building node array";
StaticGraph<EdgeData>::EdgeIterator edge = 0;
StaticGraph<EdgeData>::EdgeIterator position = 0;
StaticGraph<EdgeData>::EdgeIterator last_edge = edge;
// initializing 'first_edge'-field of nodes:
for (const auto node : osrm::irange(0u, max_used_node_id))
{
last_edge = edge;
while ((edge < contracted_edge_count) && (contracted_edge_list[edge].source == node))
{
++edge;
}
node_array[node].first_edge = position; //=edge
position += edge - last_edge; // remove
}
for (const auto sentinel_counter : osrm::irange<unsigned>(max_used_node_id, node_array.size()))
{
// sentinel element, guarded against underflow
node_array[sentinel_counter].first_edge = contracted_edge_count;
}
SimpleLogger().Write() << "Serializing node array";
const unsigned node_array_size = node_array.size();
// serialize crc32, aka checksum
hsgr_output_stream.write((char *)&node_based_edge_list_CRC32, sizeof(unsigned));
// serialize number of nodes
hsgr_output_stream.write((char *)&node_array_size, sizeof(unsigned));
// serialize number of edges
hsgr_output_stream.write((char *)&contracted_edge_count, sizeof(unsigned));
// serialize all nodes
if (node_array_size > 0)
{
hsgr_output_stream.write((char *)&node_array[0],
sizeof(StaticGraph<EdgeData>::NodeArrayEntry) * node_array_size);
}
// serialize all edges
SimpleLogger().Write() << "Building edge array";
edge = 0;
int number_of_used_edges = 0;
StaticGraph<EdgeData>::EdgeArrayEntry current_edge;
for (const auto edge : osrm::irange<std::size_t>(0, contracted_edge_list.size()))
{
// no eigen loops
BOOST_ASSERT(contracted_edge_list[edge].source != contracted_edge_list[edge].target);
current_edge.target = contracted_edge_list[edge].target;
current_edge.data = contracted_edge_list[edge].data;
// every target needs to be valid
BOOST_ASSERT(current_edge.target < max_used_node_id);
#ifndef NDEBUG
if (current_edge.data.distance <= 0)
{
SimpleLogger().Write(logWARNING) << "Edge: " << edge
<< ",source: " << contracted_edge_list[edge].source
<< ", target: " << contracted_edge_list[edge].target
<< ", dist: " << current_edge.data.distance;
SimpleLogger().Write(logWARNING) << "Failed at adjacency list of node "
<< contracted_edge_list[edge].source << "/"
<< node_array.size() - 1;
return 1;
}
#endif
hsgr_output_stream.write((char *)¤t_edge,
sizeof(StaticGraph<EdgeData>::EdgeArrayEntry));
++number_of_used_edges;
}
hsgr_output_stream.close();
TIMER_STOP(preparing);
SimpleLogger().Write() << "Preprocessing : " << TIMER_SEC(preparing) << " seconds";
SimpleLogger().Write() << "Expansion : " << (number_of_node_based_nodes / TIMER_SEC(expansion))
<< " nodes/sec and "
<< (number_of_edge_based_nodes / TIMER_SEC(expansion)) << " edges/sec";
SimpleLogger().Write() << "Contraction: "
<< (number_of_edge_based_nodes / TIMER_SEC(contraction))
<< " nodes/sec and " << number_of_used_edges / TIMER_SEC(contraction)
<< " edges/sec";
node_array.clear();
SimpleLogger().Write() << "finished preprocessing";
return 0;
}
