X-Git-Url: https://git.m6w6.name/?a=blobdiff_plain;f=libmemcached%2Fio.c;h=2515dc1ea7c72b5f5e2a42404d3aa11f23233c4f;hb=d9752c25d2f723d27e355d0c7090b65b0445c4a4;hp=6513492d5007734ec46599bfa287f5193263cd29;hpb=c63b3f26c9e8d0214d3e1c70fb761f7700d61d2d;p=m6w6%2Flibmemcached

diff --git a/libmemcached/io.c b/libmemcached/io.c
index 6513492d..2515dc1e 100644
--- a/libmemcached/io.c
+++ b/libmemcached/io.c
@@ -55,14 +55,10 @@ static memcached_return_t io_wait(memcached_server_write_instance_st ptr,
       return MEMCACHED_FAILURE;
   }
 
-  int timeout= ptr->root->poll_timeout;
-  if (ptr->root->flags.no_block == false)
-    timeout= -1;
-
   size_t loop_max= 5;
   while (--loop_max) // While loop is for ERESTART or EINTR
   {
-    error= poll(&fds, 1, timeout);
+    error= poll(&fds, 1, ptr->root->poll_timeout);
 
     switch (error)
     {
@@ -109,6 +105,11 @@ static memcached_return_t io_wait(memcached_server_write_instance_st ptr,
   return MEMCACHED_FAILURE;
 }
 
+memcached_return_t memcached_io_wait_for_write(memcached_server_write_instance_st ptr)
+{
+  return io_wait(ptr, MEM_WRITE);
+}
+
 /**
  * Try to fill the input buffer for a server with as much
  * data as possible.
@@ -313,7 +314,7 @@ memcached_return_t memcached_io_read(memcached_server_write_instance_st ptr,
             and protocol enforcement happens at memcached_response()
             looking for '\n'. We do not care for UDB which requests 8 bytes
             at once. Generally, this means that connection went away. Since
-            for blocking I/O we do not return 0 and for non-blocking case
+            for blocking I/O we do not return EXIT_SUCCESS and for non-blocking case
             it will return EGAIN if data is not immediatly available.
           */
           WATCHPOINT_STRING("We had a zero length recv()");
@@ -385,7 +386,9 @@ static ssize_t _io_write(memcached_server_write_instance_st ptr,
       buffer_end= MAX_UDP_DATAGRAM_LENGTH;
       should_write= length;
       if (ptr->write_buffer_offset + should_write > buffer_end)
+      {
         return -1;
+      }
     }
     else
     {
@@ -408,7 +411,9 @@ static ssize_t _io_write(memcached_server_write_instance_st ptr,
       WATCHPOINT_ASSERT(ptr->fd != INVALID_SOCKET);
       sent_length= io_flush(ptr, &rc);
       if (sent_length == -1)
+      {
         return -1;
+      }
 
       /* If io_flush calls memcached_purge, sent_length may be 0 */
       unlikely (sent_length != 0)
@@ -574,7 +579,9 @@ static ssize_t io_flush(memcached_server_write_instance_st ptr,
     rc= memcached_purge(ptr);
 
     if (rc != MEMCACHED_SUCCESS && rc != MEMCACHED_STORED)
+    {
       return -1;
+    }
   }
   ssize_t sent_length;
   size_t return_length;
@@ -587,11 +594,13 @@ static ssize_t io_flush(memcached_server_write_instance_st ptr,
 
   // UDP Sanity check, make sure that we are not sending somthing too big
   if (ptr->type == MEMCACHED_CONNECTION_UDP && write_length > MAX_UDP_DATAGRAM_LENGTH)
+  {
     return -1;
+  }
 
   if (ptr->write_buffer_offset == 0 || (ptr->type == MEMCACHED_CONNECTION_UDP
                                         && ptr->write_buffer_offset == UDP_DATAGRAM_HEADER_LENGTH))
-    return 0;
+    return EXIT_SUCCESS;
 
   /* Looking for memory overflows */
 #if defined(DEBUG)
@@ -609,12 +618,15 @@ static ssize_t io_flush(memcached_server_write_instance_st ptr,
     if (ptr->type == MEMCACHED_CONNECTION_UDP)
       increment_udp_message_id(ptr);
 
-    sent_length= send(ptr->fd, local_write_ptr, write_length, 0);
+    WATCHPOINT_ASSERT(ptr->fd != -1);
+    sent_length= send(ptr->fd, local_write_ptr, write_length, MSG_NOSIGNAL|MSG_DONTWAIT);
     if (sent_length == SOCKET_ERROR)
     {
       ptr->cached_errno= get_socket_errno();
+#if 0 // @todo I should look at why we hit this bit of code hard frequently
       WATCHPOINT_ERRNO(get_socket_errno());
       WATCHPOINT_NUMBER(get_socket_errno());
+#endif
       switch (get_socket_errno())
       {
       case ENOBUFS:
@@ -643,9 +655,12 @@ static ssize_t io_flush(memcached_server_write_instance_st ptr,
           memcached_quit_server(ptr, true);
           return -1;
         }
+      case ENOTCONN:
+      case EPIPE:
       default:
         memcached_quit_server(ptr, true);
         *error= MEMCACHED_ERRNO;
+        WATCHPOINT_ASSERT(ptr->fd == -1);
         return -1;
       }
     }