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fsmonitor: use IPC to query the builtin FSMonitor daemon

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Use simple IPC to directly communicate with the new builtin file
system monitor daemon when `core.fsmonitor` is set to true.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Jeff Hostetler <jeffhost@microsoft.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Jeff Hostetler 2022-03-25 18:02:47 +00:00 committed by Junio C Hamano
parent 1e0ea5c431
commit 9c307e8afd
1 changed files with 36 additions and 2 deletions
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38
fsmonitor.c
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@ -241,8 +241,41 @@ void refresh_fsmonitor(struct index_state *istate)
trace_printf_key(&trace_fsmonitor, "refresh fsmonitor");
if (fsm_mode == FSMONITOR_MODE_IPC) {
/* TODO */
return;
query_success = !fsmonitor_ipc__send_query(
istate->fsmonitor_last_update ?
istate->fsmonitor_last_update : "builtin:fake",
&query_result);
if (query_success) {
/*
* The response contains a series of nul terminated
* strings. The first is the new token.
*
* Use `char *buf` as an interlude to trick the CI
* static analysis to let us use `strbuf_addstr()`
* here (and only copy the token) rather than
* `strbuf_addbuf()`.
*/
buf = query_result.buf;
strbuf_addstr(&last_update_token, buf);
bol = last_update_token.len + 1;
is_trivial = query_result.buf[bol] == '/';
if (is_trivial)
trace2_data_intmax("fsm_client", NULL,
"query/trivial-response", 1);
} else {
/*
* The builtin daemon is not available on this
* platform -OR- we failed to get a response.
*
* Generate a fake token (rather than a V1
* timestamp) for the index extension. (If
* they switch back to the hook API, we don't
* want ambiguous state.)
*/
strbuf_addstr(&last_update_token, "builtin:fake");
}
goto apply_results;
}
assert(fsm_mode == FSMONITOR_MODE_HOOK);
@ -315,6 +348,7 @@ void refresh_fsmonitor(struct index_state *istate)
query_success ? "success" : "failure");
}
apply_results:
/*
* The response from FSMonitor (excluding the header token) is
* either: