Free memory allocated by gvRenderData.

mdaines · Sep 13, 2015 · 425313e · 425313e
1 parent b65e9af
commit 425313e
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Showing 2 changed files with 6 additions and 2 deletions.
diff --git a/Makefile b/Makefile
@@ -16,7 +16,7 @@ viz.js: src/pre.js module.js src/post.js
 	cat $^ > $@
 
 module.js: src/viz.c
-	emcc -v -Oz --memory-init-file 0  -s USE_ZLIB=1 -s MODULARIZE=1 -s ASSERTIONS=2 -s EXPORTED_FUNCTIONS="['_vizRenderFromString', '_dtextract', '_Dtqueue']" -o $@ $< -I$(PREFIX)/include -I$(PREFIX)/include/graphviz -L$(PREFIX)/lib -L$(PREFIX)/lib/graphviz -lgvplugin_core -lgvplugin_dot_layout -lgvplugin_neato_layout -lcdt -lcgraph -lgvc -lgvpr -lpathplan -lexpat -lxdot -lz
+	emcc -v -Oz --memory-init-file 0 -s USE_ZLIB=1 -s MODULARIZE=1 -s ASSERTIONS=2 -s EXPORTED_FUNCTIONS="['_vizRenderFromString', '_dtextract', '_Dtqueue']" -o $@ $< -I$(PREFIX)/include -I$(PREFIX)/include/graphviz -L$(PREFIX)/lib -L$(PREFIX)/lib/graphviz -lgvplugin_core -lgvplugin_dot_layout -lgvplugin_neato_layout -lcdt -lcgraph -lgvc -lgvpr -lpathplan -lexpat -lxdot -lz
 
 
 $(PREFIX):

diff --git a/src/post.js b/src/post.js
@@ -9,7 +9,11 @@
       graphviz = Module();
     }
 
-    return graphviz["ccall"]("vizRenderFromString", "string", ["string", "string", "string"], [src, format, engine]);
+    var resultPointer = graphviz["ccall"]("vizRenderFromString", "number", ["string", "string", "string"], [src, format, engine]);
+    var resultString = graphviz["Pointer_stringify"](resultPointer);
+    graphviz["_free"](resultPointer);
+
+    return resultString;
   }
 })();