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Load the serialized representation from file once

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The previous implementation had each sampling run reading from the
serialized file. This introduced a large I/O overhead and the
performance was much slower than the equivalent run with the
unserialized source.
This commit is contained in:
Dan Short 2020-07-31 13:25:46 +01:00
parent d4e7fa5d87
commit 175d57c126
2 changed files with 10 additions and 2 deletions
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4
examples/serialized_custom_source/serialized_source_ring.cpp
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@ -23,9 +23,11 @@ class SerialisedSource {
// The deserialisation routine populates the constructor from well defined elements
// in the input XML document.
// Note that the source will have already been read from file, so what will be passed
// in here is a string-like serialized value (not the path to the serialized value).
static SerialisedSource from_xml(char* serialised_source) {
pugi::xml_document doc;
doc.load_file(serialised_source);
doc.load_string(serialised_source);
pugi::xml_node root_node = doc.root().child("Source");
double radius = root_node.child("Radius").text().as_double();
double energy = root_node.child("Energy").text().as_double();

8
src/source.cpp
View file

@ -99,7 +99,13 @@ SourceDistribution::SourceDistribution(pugi::xml_node node)
}
if (check_for_node(node, "serialization")) {
serialization = get_node_value(node, "serialization", false, true);
// If the source is serialized then make sure we only load it from file once, otherwise there will
// be a significant I/O overhead.
pugi::xml_document doc;
doc.load_file(get_node_value(node, "serialization", false, true).c_str());
std::stringstream ss;
doc.print(ss);
serialization = ss.str();
}
} else {