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* Store Value nodes outside of attribute sets. I.e., Attr now stores

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a pointer to a Value, rather than the Value directly.  This improves
  the effectiveness of garbage collection a lot: if the Value is
  stored inside the set directly, then any live pointer to the Value
  causes all other attributes in the set to be live as well.
This commit is contained in:
Eelco Dolstra 2010-10-22 14:47:42 +00:00
parent 64c3325b0b
commit 41c45a9b31
15 changed files with 150 additions and 130 deletions
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40
src/libexpr/get-drvs.cc
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@ -10,7 +10,7 @@ string DrvInfo::queryDrvPath(EvalState & state) const
if (drvPath == "" && attrs) {
Bindings::iterator i = attrs->find(state.sDrvPath);
PathSet context;
(string &) drvPath = i != attrs->end() ? state.coerceToPath(i->second.value, context) : "";
(string &) drvPath = i != attrs->end() ? state.coerceToPath(*i->second.value, context) : "";
}
return drvPath;
}
@ -21,7 +21,7 @@ string DrvInfo::queryOutPath(EvalState & state) const
if (outPath == "" && attrs) {
Bindings::iterator i = attrs->find(state.sOutPath);
PathSet context;
(string &) outPath = i != attrs->end() ? state.coerceToPath(i->second.value, context) : "";
(string &) outPath = i != attrs->end() ? state.coerceToPath(*i->second.value, context) : "";
}
return outPath;
}
@ -36,21 +36,21 @@ MetaInfo DrvInfo::queryMetaInfo(EvalState & state) const
Bindings::iterator a = attrs->find(state.sMeta);
if (a == attrs->end()) return meta; /* fine, empty meta information */
state.forceAttrs(a->second.value);
state.forceAttrs(*a->second.value);
foreach (Bindings::iterator, i, *a->second.value.attrs) {
foreach (Bindings::iterator, i, *a->second.value->attrs) {
MetaValue value;
state.forceValue(i->second.value);
if (i->second.value.type == tString) {
state.forceValue(*i->second.value);
if (i->second.value->type == tString) {
value.type = MetaValue::tpString;
value.stringValue = i->second.value.string.s;
} else if (i->second.value.type == tInt) {
value.stringValue = i->second.value->string.s;
} else if (i->second.value->type == tInt) {
value.type = MetaValue::tpInt;
value.intValue = i->second.value.integer;
} else if (i->second.value.type == tList) {
value.intValue = i->second.value->integer;
} else if (i->second.value->type == tList) {
value.type = MetaValue::tpStrings;
for (unsigned int j = 0; j < i->second.value.list.length; ++j)
value.stringValues.push_back(state.forceStringNoCtx(*i->second.value.list.elems[j]));
for (unsigned int j = 0; j < i->second.value->list.length; ++j)
value.stringValues.push_back(state.forceStringNoCtx(*i->second.value->list.elems[j]));
} else continue;
((MetaInfo &) meta)[i->first] = value;
}
@ -99,13 +99,13 @@ static bool getDerivation(EvalState & state, Value & v,
Bindings::iterator i = v.attrs->find(state.sName);
/* !!! We really would like to have a decent back trace here. */
if (i == v.attrs->end()) throw TypeError("derivation name missing");
drv.name = state.forceStringNoCtx(i->second.value);
drv.name = state.forceStringNoCtx(*i->second.value);
i = v.attrs->find(state.sSystem);
if (i == v.attrs->end())
Bindings::iterator i2 = v.attrs->find(state.sSystem);
if (i2 == v.attrs->end())
drv.system = "unknown";
else
drv.system = state.forceStringNoCtx(i->second.value);
drv.system = state.forceStringNoCtx(*i2->second.value);
drv.attrs = v.attrs;
@ -138,7 +138,7 @@ static string addToPath(const string & s1, const string & s2)
static void getDerivations(EvalState & state, Value & vIn,
const string & pathPrefix, const Bindings & autoArgs,
const string & pathPrefix, Bindings & autoArgs,
DrvInfos & drvs, Done & done)
{
Value v;
@ -168,7 +168,7 @@ static void getDerivations(EvalState & state, Value & vIn,
foreach (SortedSymbols::iterator, i, attrs) {
startNest(nest, lvlDebug, format("evaluating attribute `%1%'") % i->first);
string pathPrefix2 = addToPath(pathPrefix, i->first);
Value & v2((*v.attrs)[i->second].value);
Value & v2(*(*v.attrs)[i->second].value);
if (combineChannels)
getDerivations(state, v2, pathPrefix2, autoArgs, drvs, done);
else if (getDerivation(state, v2, pathPrefix2, drvs, done)) {
@ -178,7 +178,7 @@ static void getDerivations(EvalState & state, Value & vIn,
attribute. */
if (v2.type == tAttrs) {
Bindings::iterator j = v2.attrs->find(state.symbols.create("recurseForDerivations"));
if (j != v2.attrs->end() && state.forceBool(j->second.value))
if (j != v2.attrs->end() && state.forceBool(*j->second.value))
getDerivations(state, v2, pathPrefix2, autoArgs, drvs, done);
}
}
@ -200,7 +200,7 @@ static void getDerivations(EvalState & state, Value & vIn,
void getDerivations(EvalState & state, Value & v, const string & pathPrefix,
const Bindings & autoArgs, DrvInfos & drvs)
Bindings & autoArgs, DrvInfos & drvs)
{
Done done;
getDerivations(state, v, pathPrefix, autoArgs, drvs, done);