Add a function queryValidPaths()

queryValidPaths() combines multiple calls to isValidPath() in one.
This matters when using the Nix daemon because it reduces latency.
For instance, on "nix-env -qas \*" it reduces execution time from 5.7s
to 4.7s (which is indistinguishable from the non-daemon case).
This commit is contained in:
Eelco Dolstra 2012-07-11 11:08:47 -04:00
parent 667d5f1936
commit 58ef4d9a95
8 changed files with 49 additions and 3 deletions

View file

@ -744,6 +744,15 @@ bool LocalStore::isValidPath(const Path & path)
}
PathSet LocalStore::queryValidPaths(const PathSet & paths)
{
PathSet res;
foreach (PathSet::const_iterator, i, paths)
if (isValidPath(*i)) res.insert(*i);
return res;
}
PathSet LocalStore::queryAllValidPaths()
{
SQLiteStmt stmt;

View file

@ -99,6 +99,8 @@ public:
bool isValidPath(const Path & path);
PathSet queryValidPaths(const PathSet & paths);
PathSet queryAllValidPaths();
ValidPathInfo queryPathInfo(const Path & path);

View file

@ -217,6 +217,23 @@ bool RemoteStore::isValidPath(const Path & path)
}
PathSet RemoteStore::queryValidPaths(const PathSet & paths)
{
if (GET_PROTOCOL_MINOR(daemonVersion) < 12) {
PathSet res;
foreach (PathSet::const_iterator, i, paths)
if (isValidPath(*i)) res.insert(*i);
return res;
} else {
openConnection();
writeInt(wopQueryValidPaths, to);
writeStrings(paths, to);
processStderr();
return readStorePaths<PathSet>(from);
}
}
PathSet RemoteStore::queryAllValidPaths()
{
openConnection();

View file

@ -27,6 +27,8 @@ public:
bool isValidPath(const Path & path);
PathSet queryValidPaths(const PathSet & paths);
PathSet queryAllValidPaths();
ValidPathInfo queryPathInfo(const Path & path);

View file

@ -113,6 +113,9 @@ public:
/* Check whether a path is valid. */
virtual bool isValidPath(const Path & path) = 0;
/* Query which of the given paths is valid. */
virtual PathSet queryValidPaths(const PathSet & paths) = 0;
/* Query the set of all valid paths. */
virtual PathSet queryAllValidPaths() = 0;

View file

@ -41,6 +41,7 @@ typedef enum {
wopImportPaths = 27,
wopQueryDerivationOutputNames = 28,
wopQuerySubstitutablePathInfos = 29,
wopQueryValidPaths = 30,
} WorkerOp;

View file

@ -932,6 +932,7 @@ static void opQuery(Globals & globals,
/* Query which paths have substitutes. */
SubstitutablePathInfos subs;
PathSet validPaths;
if (printStatus) {
PathSet paths;
foreach (vector<DrvInfo>::iterator, i, elems2)
@ -941,6 +942,7 @@ static void opQuery(Globals & globals,
printMsg(lvlTalkative, format("skipping derivation named `%1%' which gives an assertion failure") % i->name);
i->setFailed();
}
validPaths = store->queryValidPaths(paths);
store->querySubstitutablePathInfos(paths, subs);
}
@ -966,9 +968,10 @@ static void opQuery(Globals & globals,
XMLAttrs attrs;
if (printStatus) {
bool hasSubs = subs.find(i->queryOutPath(globals.state)) != subs.end();
bool isInstalled = installed.find(i->queryOutPath(globals.state)) != installed.end();
bool isValid = store->isValidPath(i->queryOutPath(globals.state));
Path outPath = i->queryOutPath(globals.state);
bool hasSubs = subs.find(outPath) != subs.end();
bool isInstalled = installed.find(outPath) != installed.end();
bool isValid = validPaths.find(outPath) != validPaths.end();
if (xmlOutput) {
attrs["installed"] = isInstalled ? "1" : "0";
attrs["valid"] = isValid ? "1" : "0";

View file

@ -297,6 +297,15 @@ static void performOp(unsigned int clientVersion,
break;
}
case wopQueryValidPaths: {
PathSet paths = readStorePaths<PathSet>(from);
startWork();
PathSet res = store->queryValidPaths(paths);
stopWork();
writeStrings(res, to);
break;
}
case wopHasSubstitutes: {
Path path = readStorePath(from);
startWork();