most important features working

linux/devices/RwPollingTask.cpp

@@ -163,10 +163,11 @@ ReturnValue_t RwPollingTask::requestReceiveMessage(CookieIF* cookie, size_t requ
 ReturnValue_t RwPollingTask::readReceivedMessage(CookieIF* cookie, uint8_t** buffer, size_t* size) {
   RwCookie* rwCookie = dynamic_cast<RwCookie*>(cookie);
   {
-    MutexGuard mg(ipcLock);
-    *buffer = rwCookie->replyBuf.data();
-    *size = rwCookie->replyBuf.size();
+    MutexGuard mg(rwCookie->bufLock);
+    memcpy(rwCookie->exchangeBuf.data(), rwCookie->replyBuf.data(), rwCookie->replyBuf.size());
   }
+  *buffer = rwCookie->exchangeBuf.data();
+  *size = rwCookie->exchangeBuf.size();
   return returnvalue::OK;
 }
 
@@ -248,6 +249,7 @@ ReturnValue_t RwPollingTask::readNextReply(RwCookie& rwCookie, uint8_t* replyBuf
 #endif
 
   size_t decodedFrameLen = 0;
+  MutexGuard mg(rwCookie.bufLock);
 
   while (decodedFrameLen < maxReplyLen) {
     // First byte already read in
@@ -428,7 +430,12 @@ void RwPollingTask::handleSpecialRequests() {
     }
     uint8_t* replyBuf;
     size_t maxReadLen = idAndIdxToReadBuffer(specialRequestIds[idx], idx, &replyBuf);
-    readNextReply(*rwCookies[idx], replyBuf, maxReadLen);
+    result = readNextReply(*rwCookies[idx], replyBuf, maxReadLen);
+    if (result == returnvalue::OK) {
+      // The first byte is always a flag which shows whether the value was read
+      // properly at least once.
+      replyBuf[0] = true;
+    }
   }
 }