add some comments explaining two error cases in the

io test action

1 files changed, 6 insertions, 0 deletions

diff --git a/src/pop-transaction.c b/src/pop-transaction.c
index d45b6e9..f135c9d 100644
--- a/src/pop-transaction.c
+++ b/src/pop-transaction.c
@@ -1429,10 +1429,16 @@ proces_io_action (PopTransaction       *transaction,
 
       if (errno == EINTR)
         {
+          /* EINTR we can handle automatically by just trying again
+           */
           return POP_ACTION_PROCESS_STATUS_NOT_FINISHED;
         }
       else if (errno == EAGAIN)
         {
+          /* EAGAIN means 
+           * "there's no more data to work with right now"
+           * so we pause the transaction until there is data
+           */
           pop_transaction_wait_for_fd (transaction, arguments->fd, condition,
                                        NULL);
           return POP_ACTION_PROCESS_STATUS_NOT_FINISHED;