Merge pull request #27 from juanjux/fix/sync_dynload

Synchronize the uncompression/loading of the native lib

Author: juanjux

build.sbt

@@ -1,6 +1,6 @@
 name := "bblfsh-client"
 organization := "org.bblfsh"
-version := "1.2.1"
+version := "1.2.2"
 
 scalaVersion := "2.11.11"
 val libuastVersion = "v1.2.0"

src/main/scala/org/bblfsh/client/libuast/Libuast.scala

@@ -10,7 +10,7 @@ object Libuast {
   var loaded = false
 
   // Extract the native module from the jar
-  private def loadBinaryLib(name: String) = {
+  private def loadBinaryLib(name: String) = synchronized {
     val tempDir = System.getProperty("java.io.tmpdir")
     val ext = if (System.getProperty("os.name").toLowerCase == "mac os x") ".dylib" else ".so"
     val fullLibName = name + ext