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monitor: Introduce monitor_fdset_*free 

Introduce new functions to remove and free no longer used fds and
fdsets.

We need those to decouple the remove/free routines from
monitor_fdset_cleanup() which will go away in the next patches.

The new functions:

- monitor_fdset_free/_if_empty() will be used when a monitor
  connection closes and when an fd is removed to cleanup any fdset
  that is now empty.

- monitor_fdset_fd_free() will be used to remove one or more fds that
  have been explicitly targeted by qmp_remove_fd().

Reviewed-by: Peter Xu <peterx@redhat.com>
Signed-off-by: Fabiano Rosas <farosas@suse.de>
This commit is contained in:
Fabiano Rosas 2024-06-17 15:57:21 -03:00
parent 1cd93fb0bf
commit a93ad56053
1 changed files with 23 additions and 8 deletions
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31
monitor/fds.c
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@ -167,6 +167,27 @@ int monitor_get_fd(Monitor *mon, const char *fdname, Error **errp)
return -1;
}
static void monitor_fdset_free(MonFdset *mon_fdset)
{
QLIST_REMOVE(mon_fdset, next);
g_free(mon_fdset);
}
static void monitor_fdset_free_if_empty(MonFdset *mon_fdset)
{
if (QLIST_EMPTY(&mon_fdset->fds) && QLIST_EMPTY(&mon_fdset->dup_fds)) {
monitor_fdset_free(mon_fdset);
}
}
static void monitor_fdset_fd_free(MonFdsetFd *mon_fdset_fd)
{
close(mon_fdset_fd->fd);
g_free(mon_fdset_fd->opaque);
QLIST_REMOVE(mon_fdset_fd, next);
g_free(mon_fdset_fd);
}
static void monitor_fdset_cleanup(MonFdset *mon_fdset)
{
MonFdsetFd *mon_fdset_fd;
@ -176,17 +197,11 @@ static void monitor_fdset_cleanup(MonFdset *mon_fdset)
if ((mon_fdset_fd->removed ||
(QLIST_EMPTY(&mon_fdset->dup_fds) && mon_refcount == 0)) &&
runstate_is_running()) {
close(mon_fdset_fd->fd);
g_free(mon_fdset_fd->opaque);
QLIST_REMOVE(mon_fdset_fd, next);
g_free(mon_fdset_fd);
monitor_fdset_fd_free(mon_fdset_fd);
}
}
if (QLIST_EMPTY(&mon_fdset->fds) && QLIST_EMPTY(&mon_fdset->dup_fds)) {
QLIST_REMOVE(mon_fdset, next);
g_free(mon_fdset);
}
monitor_fdset_free_if_empty(mon_fdset);
}
void monitor_fdsets_cleanup(void)