* Start of concurrent garbage collection. Processes write temporary

  roots to a per-process temporary file in /nix/var/nix/temproots
  while holding a write lock on that file.  The garbage collector
  acquires read locks on all those files, thus blocking further
  progress in other Nix processes, and reads the sets of temporary
  roots.

1 files changed, 5 insertions, 0 deletions

diff --git a/src/libstore/store.cc b/src/libstore/store.cc
index e676216c9fb4..7c0faaf6c4d9 100644
--- a/src/libstore/store.cc
+++ b/src/libstore/store.cc
@@ -12,6 +12,7 @@
 #include "db.hh"
 #include "archive.hh"
 #include "pathlocks.hh"
+#include "gc.hh"
 
 
 /* Nix database. */
@@ -468,6 +469,8 @@ Path addToStore(const Path & _srcPath)
     string baseName = baseNameOf(srcPath);
     Path dstPath = makeStorePath("source", h, baseName);
 
+    addTempRoot(dstPath);
+
     if (!readOnlyMode && !isValidPath(dstPath)) { 
 
         /* The first check above is an optimisation to prevent
@@ -512,6 +515,8 @@ Path addTextToStore(const string & suffix, const string & s,
 
     Path dstPath = makeStorePath("text", hash, suffix);
     
+    addTempRoot(dstPath);
+
     if (!readOnlyMode && !isValidPath(dstPath)) {
 
         PathSet lockPaths;