Patch from evn

[m6w6/libmemcached] / libmemcached / memcached_io.c

diff --git a/libmemcached/memcached_io.c b/libmemcached/memcached_io.c
index ddca197260f818de70c5e04e6e60a553479f1b8e..42d9f6f98f8ca504f1ed35a30b60f50d936b0b7c 100644 (file)
--- a/libmemcached/memcached_io.c
+++ b/libmemcached/memcached_io.c
@@ -30,6 +30,7 @@ static memcached_return io_wait(memcached_server_st *ptr,
   fds[0].fd= ptr->fd;
   fds[0].events= flags;
 
+#ifdef NOT_DONE
   /*
   ** We are going to block on write, but at least on Solaris we might block
   ** on write if we haven't read anything from our input buffer..
@@ -39,7 +40,11 @@ static memcached_return io_wait(memcached_server_st *ptr,
   ** the test.
   */
   if (read_or_write == MEM_WRITE)
-    memcached_purge(ptr);
+  {
+    if (memcached_purge(ptr) != MEMCACHED_SUCCESS || memcached_purge(ptr) != MEMCACHED_STORED)
+      return MEMCACHED_FAILURE;
+  }
+#endif
 
   error= poll(fds, 1, ptr->root->poll_timeout);
 
@@ -112,6 +117,7 @@ ssize_t memcached_io_read(memcached_server_st *ptr,
           switch (errno)
           {
           case EAGAIN:
+          case EINTR: 
             {
               memcached_return rc;
 
@@ -175,6 +181,8 @@ ssize_t memcached_io_write(memcached_server_st *ptr,
   size_t original_length;
   const char* buffer_ptr;
 
+  WATCHPOINT_ASSERT(ptr->fd != -1);
+
   original_length= length;
   buffer_ptr= buffer;
 
@@ -198,6 +206,7 @@ ssize_t memcached_io_write(memcached_server_st *ptr,
       memcached_return rc;
       ssize_t sent_length;
 
+      WATCHPOINT_ASSERT(ptr->fd != -1);
       sent_length= io_flush(ptr, &rc);
       if (sent_length == -1)
         return -1;
@@ -209,6 +218,7 @@ ssize_t memcached_io_write(memcached_server_st *ptr,
   if (with_flush)
   {
     memcached_return rc;
+    WATCHPOINT_ASSERT(ptr->fd != -1);
     if (io_flush(ptr, &rc) == -1)
       return -1;
   }
@@ -219,20 +229,30 @@ ssize_t memcached_io_write(memcached_server_st *ptr,
 memcached_return memcached_io_close(memcached_server_st *ptr)
 {
   int r;
-  /* in case of death shutdown to avoid blocking at close() */
 
-  r= shutdown(ptr->fd, SHUT_RDWR);
+  if (ptr->fd == -1)
+    return MEMCACHED_SUCCESS;
+
+  /* in case of death shutdown to avoid blocking at close() */
+  if (1)
+  {
+    r= shutdown(ptr->fd, SHUT_RDWR);
 
 #ifdef HAVE_DEBUG
-  if (r && errno != ENOTCONN)
-  {
-    WATCHPOINT_ERRNO(errno);
-    WATCHPOINT_ASSERT(errno);
-  }
+    if (r && errno != ENOTCONN)
+    {
+      WATCHPOINT_NUMBER(ptr->fd);
+      WATCHPOINT_ERRNO(errno);
+      WATCHPOINT_ASSERT(errno);
+    }
 #endif
+  }
 
   r= close(ptr->fd);
-  WATCHPOINT_ASSERT(r == 0);
+#ifdef HAVE_DEBUG
+  if (r != 0)
+    WATCHPOINT_ERRNO(errno);
+#endif
 
   return MEMCACHED_SUCCESS;
 }
@@ -247,6 +267,8 @@ static ssize_t io_flush(memcached_server_st *ptr,
 
   *error= MEMCACHED_SUCCESS;
 
+  WATCHPOINT_ASSERT(ptr->fd != -1);
+
   if (ptr->write_buffer_offset == 0)
     return 0;
 
@@ -260,6 +282,7 @@ static ssize_t io_flush(memcached_server_st *ptr,
   return_length= 0;
   while (write_length)
   {
+    WATCHPOINT_ASSERT(ptr->fd != -1);
     WATCHPOINT_ASSERT(write_length > 0);
     sent_length= 0;
     if (ptr->type == MEMCACHED_CONNECTION_UDP)
@@ -292,15 +315,25 @@ static ssize_t io_flush(memcached_server_st *ptr,
     }
     else
     {
+#ifdef NOT_DONE
       /*
       ** We might want to purge the input buffer if we haven't consumed
       ** any output yet... The test for the limits is the purge is inline
       ** in the purge function to avoid duplicating the logic..
       */
-      memcached_purge(ptr);
+      {
+        memcached_return rc;
+        WATCHPOINT_ASSERT(ptr->fd != -1);
+        rc= memcached_purge(ptr);
+
+        if (rc != MEMCACHED_SUCCESS || rc != MEMCACHED_STORED)
+          return -1;
+      }
+#endif
 
+      WATCHPOINT_ASSERT(ptr->fd != -1);
       if ((sent_length= write(ptr->fd, local_write_ptr, 
-                                       write_length)) == -1)
+                              write_length)) == -1)
       {
         switch (errno)
         {
@@ -334,7 +367,8 @@ static ssize_t io_flush(memcached_server_st *ptr,
   }
 
   WATCHPOINT_ASSERT(write_length == 0);
-  WATCHPOINT_ASSERT(return_length == ptr->write_buffer_offset);
+  // Need to study this assert() WATCHPOINT_ASSERT(return_length ==
+  // ptr->write_buffer_offset);
   ptr->write_buffer_offset= 0;
 
   return return_length;