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core: set some event source priorities to enforce dispatching order

This commit is contained in:
Lennart Poettering 2013-11-25 15:35:10 +01:00
parent 5bcb0f2ba0
commit 290837072b
3 changed files with 19 additions and 0 deletions
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5
src/core/manager.c
View File

@ -368,6 +368,11 @@ static int manager_setup_signals(Manager *m) {
if (r < 0)
return r;
/* Process signals a bit earlier than the rest of things */
r = sd_event_source_set_priority(m->signal_event_source, -5);
if (r < 0)
return r;
if (m->running_as == SYSTEMD_SYSTEM)
return enable_special_signals(m);

7
src/core/mount.c
View File

@ -1611,6 +1611,13 @@ static int mount_enumerate(Manager *m) {
r = sd_event_add_io(m->event, fileno(m->proc_self_mountinfo), EPOLLPRI, mount_dispatch_io, m, &m->mount_event_source);
if (r < 0)
goto fail;
/* Dispatch this before we dispatch SIGCHLD, so that
* we always get the events from /proc/self/mountinfo
* before the SIGCHLD of /bin/mount. */
r = sd_event_source_set_priority(m->mount_event_source, -10);
if (r < 0)
goto fail;
}
r = mount_load_proc_self_mountinfo(m, false);

7
src/core/swap.c
View File

@ -1238,6 +1238,13 @@ static int swap_enumerate(Manager *m) {
r = sd_event_add_io(m->event, fileno(m->proc_swaps), EPOLLPRI, swap_dispatch_io, m, &m->swap_event_source);
if (r < 0)
goto fail;
/* Dispatch this before we dispatch SIGCHLD, so that
* we always get the events from /proc/swaps before
* the SIGCHLD of /sbin/swapon. */
r = sd_event_source_set_priority(m->swap_event_source, -10);
if (r < 0)
goto fail;
}
r = swap_load_proc_swaps(m, false);