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Diffstat (limited to 'src/guestfs.pod')
| -rw-r--r-- | src/guestfs.pod | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/src/guestfs.pod b/src/guestfs.pod index 43b74603..97b92824 100644 --- a/src/guestfs.pod +++ b/src/guestfs.pod @@ -1526,6 +1526,20 @@ When the daemon launches it sends an initial word (C<GUESTFS_LAUNCH_FLAG>) which indicates that the guest and daemon is alive. This is what L</guestfs_launch> waits for. +=head3 PROGRESS NOTIFICATION MESSAGES + +The daemon may send progress notification messages at any time. These +are distinguished by the normal length word being replaced by +C<GUESTFS_PROGRESS_FLAG>, followed by a fixed size progress message. + +The library turns them into progress callbacks (see +C<guestfs_set_progress_callback>) if there is a callback registered, +or discards them if not. + +The daemon self-limits the frequency of progress messages it sends +(see C<daemon/proto.c:notify_progress>). Not all calls generate +progress messages. + =head1 MULTIPLE HANDLES AND MULTIPLE THREADS All high-level libguestfs actions are synchronous. If you want |