New SetBlocking method for JackSocket.

git-svn-id: http://subversion.jackaudio.org/jack/jack2/trunk/jackmp@2110 0c269be4-1314-0410-8aa9-9f06e86f4224

ChangeLog

@@ -20,6 +20,10 @@ Fernando Lopez-Lezcano
   Jackdmp changes log
 ---------------------------
 
+2008-03-31 Stephane Letz  <letz@grame.fr>
+		
+	* New SetBlocking method for JackSocket.
+
 2008-03-29 Stephane Letz  <letz@grame.fr>
 		
 	* Correct a missing parameter in the usage message of jack_midiseq.

common/JackChannel.h

@@ -201,9 +201,9 @@ class JackServerNotifyChannelInterface
         virtual void Close()
         {}
 
-        virtual void ClientNotify(int refnum, int notify, int value)
+        virtual void Notify(int refnum, int notify, int value)
         {}
-
+        
 };
 
 

common/JackEngine.cpp

@@ -134,7 +134,7 @@ void JackEngine::ProcessNext(jack_time_t callback_usecs)
 {
     fLastSwitchUsecs = callback_usecs;
     if (fGraphManager->RunNextGraph())	// True if the graph actually switched to a new state
-        fChannel->ClientNotify(ALL_CLIENTS, kGraphOrderCallback, 0);
+        fChannel->Notify(ALL_CLIENTS, kGraphOrderCallback, 0);
     fSignal->SignalAll();				// Signal for threads waiting for next cycle
 }
 
@@ -191,12 +191,12 @@ void JackEngine::CheckXRun(jack_time_t callback_usecs)  // REVOIR les conditions
 
             if (status != NotTriggered && status != Finished) {
                 jack_error("JackEngine::XRun: client = %s was not run: state = %ld", client->GetClientControl()->fName, status);
-                fChannel->ClientNotify(ALL_CLIENTS, kXRunCallback, 0);  // Notify all clients
+                fChannel->Notify(ALL_CLIENTS, kXRunCallback, 0);  // Notify all clients
             }
 
             if (status == Finished && (long)(finished_date - callback_usecs) > 0) {
                 jack_error("JackEngine::XRun: client %s finished after current callback", client->GetClientControl()->fName);
-                fChannel->ClientNotify(ALL_CLIENTS, kXRunCallback, 0);  // Notify all clients
+                fChannel->Notify(ALL_CLIENTS, kXRunCallback, 0);  // Notify all clients
             }
         }
     }
@@ -272,7 +272,7 @@ void JackEngine::NotifyXRun(jack_time_t callback_usecs)
 {
     // Use the audio thread => request thread communication channel
     fEngineControl->ResetFrameTime(callback_usecs);
-    fChannel->ClientNotify(ALL_CLIENTS, kXRunCallback, 0);
+    fChannel->Notify(ALL_CLIENTS, kXRunCallback, 0);
 }
 
 void JackEngine::NotifyXRun(int refnum)

common/JackSocket.cpp

@@ -33,7 +33,7 @@ void JackClientSocket::SetReadTimeOut(long sec)
     timout.tv_sec = sec;
     timout.tv_usec = 0;
     if (setsockopt(fSocket, SOL_SOCKET, SO_RCVTIMEO, (const char*)&timout, sizeof(timeval)) < 0) {
-        jack_log("setsockopt SO_RCVTIMEO fd = %ld err = %s", fSocket, strerror(errno));
+        jack_error("SetReadTimeOut fd = %ld err = %s", fSocket, strerror(errno));
     }
 }
 
@@ -43,7 +43,15 @@ void JackClientSocket::SetWriteTimeOut(long sec)
     timout.tv_sec = sec ;
     timout.tv_usec = 0;
     if (setsockopt(fSocket, SOL_SOCKET, SO_SNDTIMEO, (const char*)&timout, sizeof(timeval)) < 0) {
-        jack_log("setsockopt SO_SNDTIMEO fd = %ld err = %s", fSocket, strerror(errno));
+        jack_error("SetWriteTimeOut fd = %ld err = %s", fSocket, strerror(errno));
+    }
+}
+
+void JackClientSocket::SetBlocking(bool onoff)
+{   
+    int flag = (onoff) ? 1 : 0;
+    if (ioctl(fSocket, FIONBIO, &flag) < 0) {
+        jack_error("SetBlocking fd = %ld err = %s", fSocket, strerror(errno));
     }
 }
 
@@ -120,13 +128,11 @@ int JackClientSocket::Close()
 
 int JackClientSocket::Read(void* data, int len)
 {
-    int len1;
-
-    if ((len1 = read(fSocket, data, len)) != len) {
+    if (read(fSocket, data, len) != len) {
         jack_error("Cannot read socket fd = %d err = %s", fSocket, strerror(errno));
         if (errno == EWOULDBLOCK) {
-            jack_log("JackClientSocket::Read time out");
-            return 0;
+            jack_error("JackClientSocket::Read time out");
+            return 0;  // For a non blocking socket, a read failure is not considered as an error
         } else {
             return -1;
         }
@@ -139,7 +145,12 @@ int JackClientSocket::Write(void* data, int len)
 {
     if (write(fSocket, data, len) != len) {
         jack_error("Cannot write socket fd = %ld err = %s", fSocket, strerror(errno));
-        return -1;
+        if (errno == EWOULDBLOCK) {
+            jack_log("JackClientSocket::Write time out");
+            return 0;  // For a non blocking socket, a write failure is not considered as an error
+        } else {
+            return -1;
+        }
     } else {
         return 0;
     }

common/JackSocket.h

@@ -25,6 +25,7 @@ Copyright (C) 2004-2008 Grame
 #include <sys/un.h>
 #include <sys/types.h>
 #include <sys/socket.h>
+#include <sys/ioctl.h> 
 #include <sys/time.h>
 #include <arpa/inet.h>
 #include <errno.h>
@@ -67,6 +68,8 @@ class JackClientSocket : public JackChannelTransaction
         }
         void SetReadTimeOut(long sec);
         void SetWriteTimeOut(long sec);
+        
+        void SetBlocking(bool onoff);
 };
 
 /*!

common/JackSocketNotifyChannel.cpp

@@ -35,6 +35,7 @@ int JackSocketNotifyChannel::Open(const char* name)
         jack_error("Cannot connect client socket");
         return -1;
     }
+    
     // Use a time out for notifications
     fNotifySocket.SetReadTimeOut(SOCKET_TIME_OUT);
     return 0;

common/JackSocketServerNotifyChannel.cpp

@@ -31,6 +31,7 @@ int JackSocketServerNotifyChannel::Open(const char* server_name)
         jack_error("Cannot connect to server socket");
         return -1;
     } else {
+        fRequestSocket.SetBlocking(true);
         return 0;
     }
 }
@@ -46,7 +47,7 @@ Can the write operation block?
 A non blocking write operation shoud be used : check if write can succeed, and ignore the notification otherwise
 (since its mainly used for XRun, ignoring a notification is OK, successive XRun will come...)
 */
-void JackSocketServerNotifyChannel::ClientNotify(int refnum, int notify, int value)
+void JackSocketServerNotifyChannel::Notify(int refnum, int notify, int value)
 {
     JackClientNotificationRequest req(refnum, notify, value);
     if (req.Write(&fRequestSocket) < 0) {

common/JackSocketServerNotifyChannel.h

@@ -46,7 +46,7 @@ class JackSocketServerNotifyChannel : public JackServerNotifyChannelInterface
         int Open(const char* server_name);
         void Close();
 
-        void ClientNotify(int refnum, int notify, int value);
+        void Notify(int refnum, int notify, int value);
 };
 
 } // end of namespace

macosx/JackMachServerNotifyChannel.cpp

@@ -44,7 +44,7 @@ void JackMachServerNotifyChannel::Close()
     //fClientPort.DisconnectPort(); pas nŽcessaire car le JackMachServerChannel a dŽja disparu?
 }
 
-void JackMachServerNotifyChannel::ClientNotify(int refnum, int notify, int value)
+void JackMachServerNotifyChannel::Notify(int refnum, int notify, int value)
 {
     kern_return_t res = rpc_jack_client_rt_notify(fClientPort.GetPort(), refnum, notify, value, 0);
     if (res != KERN_SUCCESS) {

macosx/JackMachServerNotifyChannel.h

@@ -47,7 +47,7 @@ class JackMachServerNotifyChannel : public JackServerNotifyChannelInterface
         int Open(const char* server_name);         // Open the Server/Client connection
         void Close();       // Close the Server/Client connection
 
-        void ClientNotify(int refnum, int notify, int value);
+        void Notify(int refnum, int notify, int value);
 };
 
 } // end of namespace

windows/JackWinNamedPipeServerNotifyChannel.cpp

@@ -46,7 +46,7 @@ Can the write operation block?
 A non blocking write operation shoud be used : check if write can succeed, and ignore the notification otherwise
 (since its mainly used for XRun, ignoring a notification is OK, successive XRun will come...)
 */
-void JackWinNamedPipeServerNotifyChannel::ClientNotify(int refnum, int notify, int value)
+void JackWinNamedPipeServerNotifyChannel::Notify(int refnum, int notify, int value)
 {
     JackClientNotificationRequest req(refnum, notify, value);
     if (req.Write(&fRequestPipe) < 0) {

windows/JackWinNamedPipeServerNotifyChannel.h

@@ -46,7 +46,7 @@ class JackWinNamedPipeServerNotifyChannel : public JackServerNotifyChannelInterf
         int Open(const char* server_name);
         void Close();
 
-        void ClientNotify(int refnum, int notify, int value);
+        void Notify(int refnum, int notify, int value);
 };
 
 } // end of namespace