fix restarting stockfish

lib/stockfish.dart

@@ -27,14 +27,6 @@ final DynamicLibrary _dylib = () {
   if (Platform.isWindows) {
     return DynamicLibrary.open('$_libName.dll');
   }
-  /*if (Platform.isLinux) {
-    return DynamicLibrary.open(
-        '${File(Platform.resolvedExecutable).parent.parent.path}/plugins/flutter_stockfish_plugin/shared/lib$_libName.so');
-  }
-  if (Platform.isWindows) {
-    return DynamicLibrary.open(
-        '${File(Platform.resolvedExecutable).parent.parent.parent.path}/plugins/flutter_stockfish_plugin/shared/$_releaseType/$_libName.dll');
-  }*/
   throw UnsupportedError('Unknown platform: ${Platform.operatingSystem}');
 }();
 

src/stockfish.cpp

@@ -23,7 +23,8 @@ const char *QUITOK = "quitok\n";
 int main(int, char **);
 
 int stockfish_init() {
-    //std::cout << "Init Stockfish: Nothing todo!";
+    fakein.open();
+    fakeout.open();
     return 0;
 }
 

src/stream_fix.cpp

@@ -8,9 +8,18 @@ bool FakeStream::try_get_line(std::string& val) {
     return true;
 }
 
+void FakeStream::open() {
+    std::lock_guard<std::mutex> lock(mutex_guard);
+    closed = false;
+    mutex_signal.notify_one();
+}
+
 void FakeStream::close() {
     std::lock_guard<std::mutex> lock(mutex_guard);
     closed = true;
+    while (!string_queue.empty()) {
+        string_queue.pop();
+    }
     mutex_signal.notify_one();
 }
 bool FakeStream::is_closed() { return closed; }

src/stream_fix.h

@@ -37,6 +37,7 @@ class FakeStream {
 
     bool try_get_line(std::string& val);
 
+    void open();
     void close();
     bool is_closed();