From 4bc00760f9bc36d5b4e8bba7de9bd71a30d7f31a Mon Sep 17 00:00:00 2001
From: Shea Levy <shea@shealevy.com>
Date: Wed, 26 Apr 2017 12:38:16 -0400
Subject: Add Store nesting to fix import-from-derivation within filterSource

---
 src/libutil/pool.hh | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

(limited to 'src/libutil')

diff --git a/src/libutil/pool.hh b/src/libutil/pool.hh
index 20df21948..703309002 100644
--- a/src/libutil/pool.hh
+++ b/src/libutil/pool.hh
@@ -68,6 +68,22 @@ public:
         state_->max = max;
     }
 
+    void incCapacity()
+    {
+        auto state_(state.lock());
+        state_->max++;
+        /* we could wakeup here, but this is only used when we're
+         * about to nest Pool usages, and we want to save the slot for
+         * the nested use if we can
+         */
+    }
+
+    void decCapacity()
+    {
+        auto state_(state.lock());
+        state_->max--;
+    }
+
     ~Pool()
     {
         auto state_(state.lock());
-- 
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