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OCD performance fix: {find,count}+insert => insert

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This commit is contained in:
Eelco Dolstra 2019-10-09 15:51:52 +02:00
parent e6e61f0a54
commit 99b73fb507
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GPG key ID: 8170B4726D7198DE
16 changed files with 32 additions and 65 deletions
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24
src/libexpr/eval.cc
View file

@ -46,11 +46,10 @@ static void printValue(std::ostream & str, std::set<const Value *> & active, con
{
checkInterrupt();
if (active.find(&v) != active.end()) {
if (!active.insert(&v).second) {
str << "<CYCLE>";
return;
}
active.insert(&v);
switch (v.type) {
case tInt:
@ -1446,8 +1445,7 @@ void EvalState::forceValueDeep(Value & v)
std::function<void(Value & v)> recurse;
recurse = [&](Value & v) {
if (seen.find(&v) != seen.end()) return;
seen.insert(&v);
if (!seen.insert(&v).second) return;
forceValue(v);
@ -1865,8 +1863,7 @@ size_t valueSize(Value & v)
std::set<const void *> seen;
auto doString = [&](const char * s) -> size_t {
if (seen.find(s) != seen.end()) return 0;
seen.insert(s);
if (!seen.insert(s).second) return 0;
return strlen(s) + 1;
};
@ -1874,8 +1871,7 @@ size_t valueSize(Value & v)
std::function<size_t(Env & v)> doEnv;
doValue = [&](Value & v) -> size_t {
if (seen.find(&v) != seen.end()) return 0;
seen.insert(&v);
if (!seen.insert(&v).second) return 0;
size_t sz = sizeof(Value);
@ -1890,8 +1886,7 @@ size_t valueSize(Value & v)
sz += doString(v.path);
break;
case tAttrs:
if (seen.find(v.attrs) == seen.end()) {
seen.insert(v.attrs);
if (seen.insert(v.attrs).second) {
sz += sizeof(Bindings) + sizeof(Attr) * v.attrs->capacity();
for (auto & i : *v.attrs)
sz += doValue(*i.value);
@ -1900,8 +1895,7 @@ size_t valueSize(Value & v)
case tList1:
case tList2:
case tListN:
if (seen.find(v.listElems()) == seen.end()) {
seen.insert(v.listElems());
if (seen.insert(v.listElems()).second) {
sz += v.listSize() * sizeof(Value *);
for (size_t n = 0; n < v.listSize(); ++n)
sz += doValue(*v.listElems()[n]);
@ -1922,8 +1916,7 @@ size_t valueSize(Value & v)
sz += doValue(*v.primOpApp.right);
break;
case tExternal:
if (seen.find(v.external) != seen.end()) break;
seen.insert(v.external);
if (!seen.insert(v.external).second) break;
sz += v.external->valueSize(seen);
break;
default:
@ -1934,8 +1927,7 @@ size_t valueSize(Value & v)
};
doEnv = [&](Env & env) -> size_t {
if (seen.find(&env) != seen.end()) return 0;
seen.insert(&env);
if (!seen.insert(&env).second) return 0;
size_t sz = sizeof(Env) + sizeof(Value *) * env.size;

3
src/libexpr/get-drvs.cc
View file

@ -277,8 +277,7 @@ static bool getDerivation(EvalState & state, Value & v,
/* Remove spurious duplicates (e.g., a set like `rec { x =
derivation {...}; y = x;}'. */
if (done.find(v.attrs) != done.end()) return false;
done.insert(v.attrs);
if (!done.insert(v.attrs).second) return false;
DrvInfo drv(state, attrPath, v.attrs);

3
src/libexpr/parser.y
View file

@ -138,11 +138,10 @@ static void addAttr(ExprAttrs * attrs, AttrPath & attrPath,
static void addFormal(const Pos & pos, Formals * formals, const Formal & formal)
{
if (formals->argNames.find(formal.name) != formals->argNames.end())
if (!formals->argNames.insert(formal.name).second)
throw ParseError(format("duplicate formal function argument '%1%' at %2%")
% formal.name % pos);
formals->formals.push_front(formal);
formals->argNames.insert(formal.name);
}

6
src/libexpr/primops.cc
View file

@ -396,8 +396,7 @@ static void prim_genericClosure(EvalState & state, const Pos & pos, Value * * ar
throw EvalError(format("attribute 'key' required, at %1%") % pos);
state.forceValue(*key->value);
if (doneKeys.find(key->value) != doneKeys.end()) continue;
doneKeys.insert(key->value);
if (!doneKeys.insert(key->value).second) continue;
res.push_back(e);
/* Call the `operator' function with `e' as argument. */
@ -1273,13 +1272,12 @@ static void prim_listToAttrs(EvalState & state, const Pos & pos, Value * * args,
string name = state.forceStringNoCtx(*j->value, pos);
Symbol sym = state.symbols.create(name);
if (seen.find(sym) == seen.end()) {
if (seen.insert(sym).second) {
Bindings::iterator j2 = v2.attrs->find(state.symbols.create(state.sValue));
if (j2 == v2.attrs->end())
throw TypeError(format("'value' attribute missing in a call to 'listToAttrs', at %1%") % pos);
v.attrs->push_back(Attr(sym, j2->value, j2->pos));
seen.insert(sym);
}
}

5
src/libexpr/value-to-xml.cc
View file

@ -105,10 +105,9 @@ static void printValueAsXML(EvalState & state, bool strict, bool location,
XMLOpenElement _(doc, "derivation", xmlAttrs);
if (drvPath != "" && drvsSeen.find(drvPath) == drvsSeen.end()) {
drvsSeen.insert(drvPath);
if (drvPath != "" && drvsSeen.insert(drvPath).second)
showAttrs(state, strict, location, *v.attrs, doc, context, drvsSeen);
} else
else
doc.writeEmptyElement("repeated");
}

11
src/libstore/build.cc
View file

@ -568,10 +568,9 @@ UserLock::UserLock()
{
auto lockedPaths(lockedPaths_.lock());
if (lockedPaths->count(fnUserLock))
if (!lockedPaths->insert(fnUserLock).second)
/* We already have a lock on this one. */
continue;
lockedPaths->insert(fnUserLock);
}
try {
@ -620,8 +619,8 @@ UserLock::UserLock()
UserLock::~UserLock()
{
auto lockedPaths(lockedPaths_.lock());
assert(lockedPaths->count(fnUserLock));
lockedPaths->erase(fnUserLock);
auto erased = lockedPaths->erase(fnUserLock);
assert(erased);
}
@ -1125,11 +1124,9 @@ void DerivationGoal::addWantedOutputs(const StringSet & outputs)
needRestart = true;
} else
for (auto & i : outputs)
if (wantedOutputs.find(i) == wantedOutputs.end()) {
wantedOutputs.insert(i);
if (wantedOutputs.insert(i).second)
needRestart = true;
}
}
void DerivationGoal::getDerivation()

3
src/libstore/builtins/buildenv.cc
View file

@ -123,8 +123,7 @@ static Path out;
static void addPkg(const Path & pkgDir, int priority)
{
if (done.count(pkgDir)) return;
done.insert(pkgDir);
if (!done.insert(pkgDir).second) return;
createLinks(pkgDir, out, priority);
try {

3
src/libstore/local-store.cc
View file

@ -1292,8 +1292,7 @@ void LocalStore::verifyPath(const Path & path, const PathSet & store,
{
checkInterrupt();
if (done.find(path) != done.end()) return;
done.insert(path);
if (!done.insert(path).second) return;
if (!isStorePath(path)) {
printError(format("path '%1%' is not in the Nix store") % path);

9
src/libstore/misc.cc
View file

@ -29,8 +29,7 @@ void Store::computeFSClosure(const PathSet & startPaths,
{
auto state(state_.lock());
if (state->exc) return;
if (state->paths.count(path)) return;
state->paths.insert(path);
if (!state->paths.insert(path).second) return;
state->pending++;
}
@ -175,8 +174,7 @@ void Store::queryMissing(const PathSet & targets,
{
auto state(state_.lock());
if (state->done.count(path)) return;
state->done.insert(path);
if (!state->done.insert(path).second) return;
}
DrvPathWithOutputs i2 = parseDrvPathWithOutputs(path);
@ -252,8 +250,7 @@ Paths Store::topoSortPaths(const PathSet & paths)
if (parents.find(path) != parents.end())
throw BuildError(format("cycle detected in the references of '%1%' from '%2%'") % path % *parent);
if (visited.find(path) != visited.end()) return;
visited.insert(path);
if (!visited.insert(path).second) return;
parents.insert(path);
PathSet references;

3
src/libstore/references.cc
View file

@ -36,11 +36,10 @@ static void search(const unsigned char * s, size_t len,
}
if (!match) continue;
string ref((const char *) s + i, refLength);
if (hashes.find(ref) != hashes.end()) {
if (hashes.erase(ref)) {
debug(format("found reference to '%1%' at offset '%2%'")
% ref % i);
seen.insert(ref);
hashes.erase(ref);
}
++i;
}

3
src/libstore/store-api.cc
View file

@ -954,8 +954,7 @@ std::list<ref<Store>> getDefaultSubstituters()
StringSet done;
auto addStore = [&](const std::string & uri) {
if (done.count(uri)) return;
done.insert(uri);
if (!done.insert(uri).second) return;
try {
stores.push_back(openStore(uri));
} catch (Error & e) {

7
src/nix-env/nix-env.cc
View file

@ -124,11 +124,10 @@ static void getAllExprs(EvalState & state,
string attrName = i;
if (hasSuffix(attrName, ".nix"))
attrName = string(attrName, 0, attrName.size() - 4);
if (attrs.find(attrName) != attrs.end()) {
if (!attrs.insert(attrName).second) {
printError(format("warning: name collision in input Nix expressions, skipping '%1%'") % path2);
continue;
}
attrs.insert(attrName);
/* Load the expression on demand. */
Value & vFun = state.getBuiltin("import");
Value & vArg(*state.allocValue());
@ -307,11 +306,9 @@ static DrvInfos filterBySelector(EvalState & state, const DrvInfos & allElems,
/* Insert only those elements in the final list that we
haven't inserted before. */
for (auto & j : matches)
if (done.find(j.second) == done.end()) {
done.insert(j.second);
if (done.insert(j.second).second)
elems.push_back(j.first);
}
}
checkSelectorUse(selectors);

7
src/nix-store/dotgraph.cc
View file

@ -71,9 +71,7 @@ void printClosure(const Path & nePath, const StoreExpr & fs)
Path path = *(workList.begin());
workList.erase(path);
if (doneSet.find(path) == doneSet.end()) {
doneSet.insert(path);
if (doneSet.insert(path).second) {
ClosureElems::const_iterator elem = fs.closure.elems.find(path);
if (elem == fs.closure.elems.end())
throw Error(format("bad closure, missing path '%1%'") % path);
@ -104,8 +102,7 @@ void printDotGraph(ref<Store> store, const PathSet & roots)
Path path = *(workList.begin());
workList.erase(path);
if (doneSet.find(path) != doneSet.end()) continue;
doneSet.insert(path);
if (!doneSet.insert(path).second) continue;
cout << makeNode(path, symbolicName(path), "#ff0000");

3
src/nix-store/nix-store.cc
View file

@ -242,11 +242,10 @@ const string treeNull = " ";
static void printTree(const Path & path,
const string & firstPad, const string & tailPad, PathSet & done)
{
if (done.find(path) != done.end()) {
if (!done.insert(path).second) {
cout << format("%1%%2% [...]\n") % firstPad % path;
return;
}
done.insert(path);
cout << format("%1%%2%\n") % firstPad % path;

3
src/nix/verify.cc
View file

@ -118,8 +118,7 @@ struct CmdVerify : StorePathsCommand
auto doSigs = [&](StringSet sigs) {
for (auto sig : sigs) {
if (sigsSeen.count(sig)) continue;
sigsSeen.insert(sig);
if (!sigsSeen.insert(sig).second) continue;
if (validSigs < ValidPathInfo::maxSigs && info->checkSignature(publicKeys, sig))
validSigs++;
}

4
src/resolve-system-dependencies/resolve-system-dependencies.cc
View file

@ -117,9 +117,7 @@ Path resolveSymlink(const Path & path)
std::set<string> resolveTree(const Path & path, PathSet & deps)
{
std::set<string> results;
if (deps.count(path))
return {};
deps.insert(path);
if (!deps.insert(path).second) return {};
for (auto & lib : runResolver(path)) {
results.insert(lib);
for (auto & p : resolveTree(lib, deps)) {