From 58ef4d9a95584fb89ebcf6222fbac6e698aa6b0b Mon Sep 17 00:00:00 2001
From: Eelco Dolstra <eelco.dolstra@logicblox.com>
Date: Wed, 11 Jul 2012 11:08:47 -0400
Subject: 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).
---
 src/nix-worker/nix-worker.cc | 9 +++++++++
 1 file changed, 9 insertions(+)

(limited to 'src/nix-worker/nix-worker.cc')

diff --git a/src/nix-worker/nix-worker.cc b/src/nix-worker/nix-worker.cc
index e786318ad45f..4d22f788595c 100644
--- a/src/nix-worker/nix-worker.cc
+++ b/src/nix-worker/nix-worker.cc
@@ -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();
-- 
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