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* Handle the case where all the direct references of a path are in the

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selection but some indirect reference isn't (in which case the path
  should still be rewritten).
This commit is contained in:
Eelco Dolstra 2005-05-30 12:16:22 +00:00
parent b90606f4e4
commit 48190ccfca
2 changed files with 33 additions and 26 deletions
Download patch file Download diff file Expand all files Collapse all files

2
src/libstore/build.cc
View file

@ -995,8 +995,6 @@ bool DerivationGoal::prepareBuild()
for (Replacements::iterator i = replacements.begin();
i != replacements.end(); ++i)
{
printMsg(lvlError, format("FOO %1% %2%")
% i->first % i->second);
printMsg(lvlError, format("HASH REWRITE %1% %2%")
% hashPartOf(i->first).toString() % hashPartOf(i->second).toString());
rewrites2[hashPartOf(i->first)] = hashPartOf(i->second);

57
src/libstore/misc.cc
View file

@ -105,8 +105,11 @@ static void findBestRewrite(const ClassMap::const_iterator & pos,
static Path maybeRewrite(const Path & path, const PathSet & selection,
const FinalClassMap & finalClassMap,
Replacements & replacements)
Replacements & replacements,
unsigned int & nrRewrites)
{
startNest(nest, lvlError, format("considering rewriting `%1%'") % path);
assert(selection.find(path) != selection.end());
if (replacements.find(path) != replacements.end()) return replacements[path];
@ -115,34 +118,35 @@ static Path maybeRewrite(const Path & path, const PathSet & selection,
queryReferences(noTxn, path, references);
HashRewrites rewrites;
PathSet newReferences;
bool okay = true;
for (PathSet::iterator i = references.begin(); i != references.end(); ++i) {
if (*i == path) continue; /* ignore self-references */
if (selection.find(*i) == selection.end()) {
OutputEqClasses classes;
queryOutputEqClasses(noTxn, *i, classes);
if (classes.size() > 0) /* !!! hacky; ignore sources; they
are not in any eq class */
{
printMsg(lvlError, format("in `%1%': missing `%2%'") % path % *i);
okay = false;
FinalClassMap::const_iterator j = finalClassMap.find(*(classes.begin()));
assert(j != finalClassMap.end());
OutputEqClasses classes;
queryOutputEqClasses(noTxn, *i, classes);
printMsg(lvlError, format("replacing with `%1%'") % j->second);
Path newPath = maybeRewrite(j->second, selection,
finalClassMap, replacements);
if (*i != newPath)
rewrites[hashPartOf(*i)] = hashPartOf(newPath);
}
/* !!! hacky; ignore sources; they are not in any eq class */
if (*i == path || classes.size() == 0) {
newReferences.insert(*i);
continue; /* ignore self-references */
}
FinalClassMap::const_iterator j = finalClassMap.find(*(classes.begin()));
assert(j != finalClassMap.end());
Path newPath = maybeRewrite(j->second, selection,
finalClassMap, replacements, nrRewrites);
if (*i != newPath)
rewrites[hashPartOf(*i)] = hashPartOf(newPath);
references.insert(newPath);
}
if (rewrites.size() == 0) return path;
if (rewrites.size() == 0) {
replacements[path] = path;
return path;
}
printMsg(lvlError, format("rewriting `%1%'") % path);
@ -150,6 +154,8 @@ static Path maybeRewrite(const Path & path, const PathSet & selection,
hashPartOf(path), namePartOf(path),
references, rewrites);
nrRewrites++;
printMsg(lvlError, format("rewrote `%1%' to `%2%'") % path % newPath);
replacements[path] = newPath;
@ -206,10 +212,13 @@ PathSet consolidatePaths(const PathSet & paths, bool checkOnly,
finalClassMap[i->first] = *j;
PathSet newPaths;
unsigned int nrRewrites = 0;
replacements.clear();
for (PathSet::iterator i = bestSelection.begin();
i != bestSelection.end(); ++i)
newPaths.insert(maybeRewrite(*i, bestSelection, finalClassMap, replacements));
newPaths.insert(maybeRewrite(*i, bestSelection, finalClassMap, replacements, nrRewrites));
assert(nrRewrites == bestCost);
return newPaths;
}