Use EnterSleep in ChannelClient synchronous communication instead of …

…Schedule.

This avoid unneeded spinning especially when doing local inter process communication.

lib/libfs/FileSystem.cpp

@@ -175,6 +175,8 @@ Error FileSystem::processRequest(FileSystemRequest *req)
         DEBUG(m_self << ": not found");
         msg->result = ENOENT;
         m_registry->getProducer(msg->from)->write(msg);
+#warning put this in ChannelClient somehow
+        ProcessCtl(msg->from, Resume, 0);
         return msg->result;
     }
 
@@ -249,6 +251,7 @@ Error FileSystem::processRequest(FileSystemRequest *req)
     if (msg->result != EAGAIN)
     {
         m_registry->getProducer(msg->from)->write(msg);
+        ProcessCtl(msg->from, Resume, 0);
     }
     return msg->result;
 }

lib/libipc/ChannelClient.cpp

@@ -184,7 +184,7 @@ ChannelClient::Result ChannelClient::syncReceiveFrom(void *buffer, ProcessID pid
 #warning use Sleep instead to avoid unneeded spinning
 
     while (ch->read(buffer) != Channel::Success)
-        ProcessCtl(SELF, Schedule, 0);
+        ProcessCtl(SELF, EnterSleep, 0);
 
     return Success;
 }

lib/libipc/ChannelServer.h

@@ -293,6 +293,8 @@ template <class Base, class MsgType> class ChannelServer
                         {
                             ERROR(m_self << ": failed to send reply message to PID: " << i.key());
                         }
+                        else
+                            ProcessCtl(i.key(), Resume, 0);
                     }
                 }
             }