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fsmonitor--daemon: prepare for adding health thread

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Refactor daemon thread startup to make it easier to start
a third thread class to monitor the health of the daemon.

Signed-off-by: Jeff Hostetler <jeffhost@microsoft.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Jeff Hostetler 2022-05-26 21:47:08 +00:00 committed by Junio C Hamano
parent 39664e9309
commit 802aa31840
1 changed files with 20 additions and 7 deletions
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27
builtin/fsmonitor--daemon.c
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@ -1174,6 +1174,8 @@ static int fsmonitor_run_daemon_1(struct fsmonitor_daemon_state *state)
*/
.uds_disallow_chdir = 0
};
int listener_started = 0;
int err = 0;
/*
* Start the IPC thread pool before the we've started the file
@ -1194,15 +1196,20 @@ static int fsmonitor_run_daemon_1(struct fsmonitor_daemon_state *state)
if (pthread_create(&state->listener_thread, NULL,
fsm_listen__thread_proc, state) < 0) {
ipc_server_stop_async(state->ipc_server_data);
ipc_server_await(state->ipc_server_data);
return error(_("could not start fsmonitor listener thread"));
err = error(_("could not start fsmonitor listener thread"));
goto cleanup;
}
listener_started = 1;
/*
* The daemon is now fully functional in background threads.
* Our primary thread should now just wait while the threads
* do all the work.
*/
cleanup:
/*
* Wait for the IPC thread pool to shutdown (whether by client
* request or from filesystem activity).
* request, from filesystem activity, or an error).
*/
ipc_server_await(state->ipc_server_data);
@ -1211,10 +1218,16 @@ static int fsmonitor_run_daemon_1(struct fsmonitor_daemon_state *state)
* event from the IPC thread pool, but it doesn't hurt to tell
* it again. And wait for it to shutdown.
*/
fsm_listen__stop_async(state);
pthread_join(state->listener_thread, NULL);
if (listener_started) {
fsm_listen__stop_async(state);
pthread_join(state->listener_thread, NULL);
}
return state->error_code;
if (err)
return err;
if (state->error_code)
return state->error_code;
return 0;
}
static int fsmonitor_run_daemon(void)