Automatic use of MSG_NOSIGNAL or SO_NOSIGPIPE (checked at compile time); moved enabli...

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@32697 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

diff --git a/src/unix/gsocket.cpp b/src/unix/gsocket.cpp
index 227bff176460c530c68825c159eff7516839d7de..fbd772f927d919d979b66ad5e8feba75d7d8cc2b 100644 (file)
--- a/src/unix/gsocket.cpp
+++ b/src/unix/gsocket.cpp
@@ -168,6 +168,11 @@ int _System soclose(int);
   signal(SIGPIPE, old_handler);             \
 }
 
   signal(SIGPIPE, old_handler);             \
 }
 

+#ifdef MSG_NOSIGNAL
+#  define GSOCKET_MSG_NOSIGNAL MSG_NOSIGNAL
+#else /* MSG_NOSIGNAL not available (FreeBSD including OS X) */
+#  define GSOCKET_MSG_NOSIGNAL 0
+#endif /* MSG_NOSIGNAL */

 
 #ifndef __GSOCKET_STANDALONE__
 #  include "wx/unix/gsockunx.h"
 
 #ifndef __GSOCKET_STANDALONE__
 #  include "wx/unix/gsockunx.h"


@@ -491,6 +496,12 @@ GSocketError GSocket::SetServer()
     m_error = GSOCK_IOERR;
     return GSOCK_IOERR;
   }
     m_error = GSOCK_IOERR;
     return GSOCK_IOERR;
   }

+
+  /* FreeBSD variants can't use MSG_NOSIGNAL, and instead use a socket option */
+#ifdef SO_NOSIGPIPE
+  setsockopt(m_fd, SOL_SOCKET, SO_NOSIGPIPE, (const char*)&arg, sizeof(u_long));
+#endif
+

   ioctl(m_fd, FIONBIO, &arg);
   gs_gui_functions->Enable_Events(this);
 
   ioctl(m_fd, FIONBIO, &arg);
   gs_gui_functions->Enable_Events(this);
 


@@ -540,8 +551,10 @@ GSocket *GSocket::WaitConnection()
 
   assert(this);
 
 
   assert(this);
 

+#ifndef __DARWIN__

   /* Reenable CONNECTION events */
   Enable(GSOCK_CONNECTION);
   /* Reenable CONNECTION events */
   Enable(GSOCK_CONNECTION);

+#endif

 
   /* If the socket has already been created, we exit immediately */
   if (m_fd == INVALID_SOCKET || !m_server)
 
   /* If the socket has already been created, we exit immediately */
   if (m_fd == INVALID_SOCKET || !m_server)


@@ -569,6 +582,11 @@ GSocket *GSocket::WaitConnection()
 
   connection->m_fd = accept(m_fd, &from, (SOCKLEN_T *) &fromlen);
 
 
   connection->m_fd = accept(m_fd, &from, (SOCKLEN_T *) &fromlen);
 

+#ifdef __DARWIN__
+  /* Reenable CONNECTION events */
+  Enable(GSOCK_CONNECTION);
+#endif
+

   if (connection->m_fd == INVALID_SOCKET)
   {
     if (errno == EWOULDBLOCK)
   if (connection->m_fd == INVALID_SOCKET)
   {
     if (errno == EWOULDBLOCK)


@@ -680,16 +698,26 @@ GSocketError GSocket::Connect(GSocketStream stream)
     m_error = GSOCK_IOERR;
     return GSOCK_IOERR;
   }
     m_error = GSOCK_IOERR;
     return GSOCK_IOERR;
   }

+
+  /* FreeBSD variants can't use MSG_NOSIGNAL, and instead use a socket option */
+#ifdef SO_NOSIGPIPE
+  setsockopt(m_fd, SOL_SOCKET, SO_NOSIGPIPE, (const char*)&arg, sizeof(u_long));
+#endif
+

 #if defined(__EMX__) || defined(__VISAGECPP__)
   ioctl(m_fd, FIONBIO, (char*)&arg, sizeof(arg));
 #else
   ioctl(m_fd, FIONBIO, &arg);
 #endif
 #if defined(__EMX__) || defined(__VISAGECPP__)
   ioctl(m_fd, FIONBIO, (char*)&arg, sizeof(arg));
 #else
   ioctl(m_fd, FIONBIO, &arg);
 #endif

-  gs_gui_functions->Enable_Events(this);

 
   /* Connect it to the peer address, with a timeout (see below) */
   ret = connect(m_fd, m_peer->m_addr, m_peer->m_len);
 
 
   /* Connect it to the peer address, with a timeout (see below) */
   ret = connect(m_fd, m_peer->m_addr, m_peer->m_len);
 

+  if (m_non_blocking)
+  {
+    gs_gui_functions->Enable_Events(this);
+  }
+

   if (ret == -1)
   {
     err = errno;
   if (ret == -1)
   {
     err = errno;


@@ -714,6 +742,8 @@ GSocketError GSocket::Connect(GSocketStream stream)
 
         getsockopt(m_fd, SOL_SOCKET, SO_ERROR, (char*) &error, &len);
 
 
         getsockopt(m_fd, SOL_SOCKET, SO_ERROR, (char*) &error, &len);
 

+        gs_gui_functions->Enable_Events(this);
+

         if (!error)
           return GSOCK_NOERROR;
       }
         if (!error)
           return GSOCK_NOERROR;
       }


@@ -841,7 +871,7 @@ int GSocket::Read(char *buffer, int size)
 
   if (ret == -1)
   {
 
   if (ret == -1)
   {

-    if (errno == EWOULDBLOCK)
+    if ((errno == EWOULDBLOCK) || (errno == EAGAIN))

       m_error = GSOCK_WOULDBLOCK;
     else
       m_error = GSOCK_IOERR;
       m_error = GSOCK_WOULDBLOCK;
     else
       m_error = GSOCK_IOERR;


@@ -885,7 +915,7 @@ int GSocket::Write(const char *buffer, int size)
 
   if (ret == -1)
   {
 
   if (ret == -1)
   {

-    if (errno == EWOULDBLOCK)
+    if ((errno == EWOULDBLOCK) || (errno == EAGAIN))     

     {
       m_error = GSOCK_WOULDBLOCK;
       GSocket_Debug(( "GSocket_Write error WOULDBLOCK\n" ));
     {
       m_error = GSOCK_WOULDBLOCK;
       GSocket_Debug(( "GSocket_Write error WOULDBLOCK\n" ));


@@ -967,7 +997,9 @@ GSocketEventFlags GSocket::Select(GSocketEventFlags flags)
     {
       char c;
 
     {
       char c;
 

-      if (recv(m_fd, &c, 1, MSG_PEEK) > 0)
+      int num = recv(m_fd, &c, 1, MSG_PEEK | GSOCKET_MSG_NOSIGNAL);
+
+      if (num > 0)

       {
         result |= GSOCK_INPUT_FLAG;
       }
       {
         result |= GSOCK_INPUT_FLAG;
       }


@@ -978,7 +1010,7 @@ GSocketEventFlags GSocket::Select(GSocketEventFlags flags)
           result |= GSOCK_CONNECTION_FLAG;
           m_detected |= GSOCK_CONNECTION_FLAG;
         }
           result |= GSOCK_CONNECTION_FLAG;
           m_detected |= GSOCK_CONNECTION_FLAG;
         }

-        else
+        else if ((errno != EWOULDBLOCK) && (errno != EAGAIN) && (errno != EINTR))

         {
           m_detected = GSOCK_LOST_FLAG;
           m_establishing = false;
         {
           m_detected = GSOCK_LOST_FLAG;
           m_establishing = false;


@@ -1279,7 +1311,12 @@ GSocketError GSocket::Output_Timeout()
 
 int GSocket::Recv_Stream(char *buffer, int size)
 {
 
 int GSocket::Recv_Stream(char *buffer, int size)
 {

-  return recv(m_fd, buffer, size, 0);
+  int ret;
+  do 
+  {
+    ret = recv(m_fd, buffer, size, GSOCKET_MSG_NOSIGNAL);
+  } while (ret == -1 && errno == EINTR);
+  return ret;

 }
 
 int GSocket::Recv_Dgram(char *buffer, int size)
 }
 
 int GSocket::Recv_Dgram(char *buffer, int size)


@@ -1291,7 +1328,10 @@ int GSocket::Recv_Dgram(char *buffer, int size)
 
   fromlen = sizeof(from);
 
 
   fromlen = sizeof(from);
 

-  ret = recvfrom(m_fd, buffer, size, 0, &from, (SOCKLEN_T *) &fromlen);
+  do 
+  {
+    ret = recvfrom(m_fd, buffer, size, 0, &from, (SOCKLEN_T *) &fromlen);
+  } while (ret == -1 && errno == EINTR);

 
   if (ret == -1)
     return -1;
 
   if (ret == -1)
     return -1;


@@ -1323,11 +1363,14 @@ int GSocket::Send_Stream(const char *buffer, int size)
   int ret;
 
 #ifndef __VISAGECPP__
   int ret;
 
 #ifndef __VISAGECPP__

-  MASK_SIGNAL();
-  ret = send(m_fd, buffer, size, 0);
+   MASK_SIGNAL();
+#endif 
+  do 
+  {
+    ret = send(m_fd, (char *)buffer, size, GSOCKET_MSG_NOSIGNAL);
+  } while (ret == -1 && errno == EINTR);
+#ifndef __VISAGECPP__

   UNMASK_SIGNAL();
   UNMASK_SIGNAL();

-#else
-  ret = send(m_fd, (char *)buffer, size, 0);

 #endif
 
   return ret;
 #endif
 
   return ret;


@@ -1354,10 +1397,13 @@ int GSocket::Send_Dgram(const char *buffer, int size)
 
 #ifndef __VISAGECPP__
   MASK_SIGNAL();
 
 #ifndef __VISAGECPP__
   MASK_SIGNAL();

-  ret = sendto(m_fd, buffer, size, 0, addr, len);
+#endif
+  do 
+  {
+    ret = sendto(m_fd, (char *)buffer, size, 0, addr, len);
+  } while (ret == -1 && errno == EINTR);
+#ifndef __VISAGECPP__

   UNMASK_SIGNAL();
   UNMASK_SIGNAL();

-#else
-  ret = sendto(m_fd, (char *)buffer, size, 0, addr, len);

 #endif
 
   /* Frees memory allocated from _GAddress_translate_to */
 #endif
 
   /* Frees memory allocated from _GAddress_translate_to */


@@ -1370,6 +1416,12 @@ void GSocket::Detected_Read()
 {
   char c;
 
 {
   char c;
 

+  /* Safeguard against straggling call to Detected_Read */
+  if (m_fd == INVALID_SOCKET)
+  {
+    return;
+  }
+

   /* If we have already detected a LOST event, then don't try
    * to do any further processing.
    */
   /* If we have already detected a LOST event, then don't try
    * to do any further processing.
    */


@@ -1382,7 +1434,9 @@ void GSocket::Detected_Read()
     return;
   }
 
     return;
   }
 

-  if (recv(m_fd, &c, 1, MSG_PEEK) > 0)
+  int num =  recv(m_fd, &c, 1, MSG_PEEK | GSOCKET_MSG_NOSIGNAL);
+
+  if (num > 0)

   {
     CALL_CALLBACK(this, GSOCK_INPUT);
   }
   {
     CALL_CALLBACK(this, GSOCK_INPUT);
   }


@@ -1394,8 +1448,15 @@ void GSocket::Detected_Read()
     }
     else
     {
     }
     else
     {

-      CALL_CALLBACK(this, GSOCK_LOST);
-      Shutdown();
+      if ((errno == EWOULDBLOCK) || (errno == EAGAIN) || (errno == EINTR)) 
+      {
+        CALL_CALLBACK(this, GSOCK_INPUT);
+      }
+      else 
+      {
+        CALL_CALLBACK(this, GSOCK_LOST);
+        Shutdown();
+      } 

     }
   }
 }
     }
   }
 }