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prune-trace: incremental mode for SamplingPruner

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The --incremental switch allows to add more samples if the resulting
confidence intervals are not satisfactory yet.

Change-Id: I65dc99522f45f8a4eaf4ce68e832f7636585381d
This commit is contained in:
Horst Schirmeier
2015-01-15 19:11:33 +01:00
parent 79211fd31d
commit 4cbcf30b7c
5 changed files with 110 additions and 32 deletions
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18
tools/prune-trace/main.cc
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@ -65,12 +65,20 @@ int main(int argc, char *argv[]) {
CommandLine::option_handle OVERWRITE =
cmd.addOption("", "overwrite", Arg::None,
"--overwrite \tOverwrite already existing pruning data (the default is to skip variants with existing entries)");
CommandLine::option_handle INCREMENTAL =
cmd.addOption("", "incremental", Arg::None,
"--incremental \tTell the pruner to work incrementally (if supported)");
if (!cmd.parse()) {
std::cerr << "Error parsing arguments." << std::endl;
exit(-1);
}
if (cmd[OVERWRITE] && cmd[INCREMENTAL]) {
std::cerr << "--overwrite and --incremental cannot be used together." << std::endl;
exit(-1);
}
Pruner *pruner;
std::string pruner_name = "BasicPruner";
if (cmd[PRUNER]) {
@ -110,6 +118,11 @@ int main(int argc, char *argv[]) {
Database *db = Database::cmdline_connect();
pruner->set_db(db);
if (cmd[INCREMENTAL] && !pruner->set_incremental(true)) {
std::cerr << "Pruner is incapable of running incrementally" << std::endl;
exit(-1);
}
std::vector<std::string> variants, benchmarks, variants_exclude, benchmarks_exclude;
if (cmd[VARIANT]) {
for (option::Option *o = cmd[VARIANT]; o; o = o->next()) {
@ -150,7 +163,8 @@ int main(int argc, char *argv[]) {
exit(-1);
}
if (!pruner->init(variants, variants_exclude, benchmarks, benchmarks_exclude, cmd[OVERWRITE])) {
if (!pruner->init(variants, variants_exclude, benchmarks, benchmarks_exclude,
cmd[OVERWRITE], cmd[INCREMENTAL])) {
LOG << "pruner->init() failed" << endl;
exit(-1);
}
@ -158,7 +172,7 @@ int main(int argc, char *argv[]) {
////////////////////////////////////////////////////////////////
// Do the actual pruning
////////////////////////////////////////////////////////////////
if (!cmd[NO_DELETE] && cmd[OVERWRITE] && !pruner->clear_database()) {
if (!cmd[NO_DELETE] && cmd[OVERWRITE] && !cmd[INCREMENTAL] && !pruner->clear_database()) {
LOG << "clear_database() failed" << endl;
exit(-1);
}