From 8490ee37a6dbfb66e1b3dbaf88918bea044b143a Mon Sep 17 00:00:00 2001
From: Eelco Dolstra <edolstra@gmail.com>
Date: Fri, 3 Mar 2017 19:28:27 +0100
Subject: SSHMaster: Make thread-safe

---
 src/libstore/ssh.hh | 24 +++++++++++++++---------
 1 file changed, 15 insertions(+), 9 deletions(-)

(limited to 'src/libstore/ssh.hh')

diff --git a/src/libstore/ssh.hh b/src/libstore/ssh.hh
index 2d2b98370396..72238dad79ab 100644
--- a/src/libstore/ssh.hh
+++ b/src/libstore/ssh.hh
@@ -1,6 +1,7 @@
 #pragma once
 
 #include "util.hh"
+#include "sync.hh"
 
 namespace nix {
 
@@ -8,13 +9,19 @@ class SSHMaster
 {
 private:
 
-    std::string host;
-    std::string keyFile;
-    bool useMaster;
-    bool compress;
-    Pid sshMaster;
-    std::unique_ptr<AutoDelete> tmpDir;
-    Path socketPath;
+    const std::string host;
+    const std::string keyFile;
+    const bool useMaster;
+    const bool compress;
+
+    struct State
+    {
+        Pid sshMaster;
+        std::unique_ptr<AutoDelete> tmpDir;
+        Path socketPath;
+    };
+
+    Sync<State> state_;
 
 public:
 
@@ -34,8 +41,7 @@ public:
 
     std::unique_ptr<Connection> startCommand(const std::string & command);
 
-    void startMaster();
-
+    Path startMaster();
 };
 
 }
-- 
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