/* Simulate the delivery and send process for BBR in STARTUP. */
void steady_state(void)
{
while (bucket < num_buckets - 1) {
double next_bucket_sec = 0.0, next_release_sec = 0.0;
/* Advance to the sooner of:
* (a) the next packet send time
* (b) the next time bucket (when ACKs might arrive)
*/
next_bucket_sec = (bucket + 1) * bucket_sec;
next_release_sec = max(time_sec,
next_pacing_release_time_secs());
if (packets_in_flight < cwnd &&
next_release_sec < next_bucket_sec) {
/* Next event is pacing engine releasing a packet. */
time_sec = next_release_sec;
send_packet();
} else {
/* Next event is moving to next bucket. */
time_sec = next_bucket_sec;
bucket++;
process_acks();
}
debug_print();
}
}
static struct ref *do_fetch_pack_v2(struct fetch_pack_args *args,
int fd[2],
const struct ref *orig_ref,
struct ref **sought, int nr_sought,
char **pack_lockfile)
{
struct ref *ref = copy_ref_list(orig_ref);
enum fetch_state state = FETCH_CHECK_LOCAL;
struct oidset common = OIDSET_INIT;
struct packet_reader reader;
int in_vain = 0;
int haves_to_send = INITIAL_FLUSH;
struct fetch_negotiator negotiator;
fetch_negotiator_init(&negotiator, negotiation_algorithm);
packet_reader_init(&reader, fd[0], NULL, 0,
PACKET_READ_CHOMP_NEWLINE);
while (state != FETCH_DONE) {
switch (state) {
case FETCH_CHECK_LOCAL:
sort_ref_list(&ref, ref_compare_name);
QSORT(sought, nr_sought, cmp_ref_by_name);
/* v2 supports these by default */
allow_unadvertised_object_request |= ALLOW_REACHABLE_SHA1;
use_sideband = 2;
if (args->depth > 0 || args->deepen_since || args->deepen_not)
args->deepen = 1;
/* Filter 'ref' by 'sought' and those that aren't local */
if (!args->no_dependents) {
mark_complete_and_common_ref(&negotiator, args, &ref);
filter_refs(args, &ref, sought, nr_sought);
if (everything_local(args, &ref))
state = FETCH_DONE;
else
state = FETCH_SEND_REQUEST;
mark_tips(&negotiator, args->negotiation_tips);
for_each_cached_alternate(&negotiator,
insert_one_alternate_object);
} else {
filter_refs(args, &ref, sought, nr_sought);
state = FETCH_SEND_REQUEST;
}
break;
case FETCH_SEND_REQUEST:
if (send_fetch_request(&negotiator, fd[1], args, ref,
&common,
&haves_to_send, &in_vain))
state = FETCH_GET_PACK;
else
state = FETCH_PROCESS_ACKS;
break;
case FETCH_PROCESS_ACKS:
/* Process ACKs/NAKs */
switch (process_acks(&negotiator, &reader, &common)) {
case 2:
state = FETCH_GET_PACK;
break;
case 1:
in_vain = 0;
/* fallthrough */
default:
state = FETCH_SEND_REQUEST;
break;
}
break;
case FETCH_GET_PACK:
/* Check for shallow-info section */
if (process_section_header(&reader, "shallow-info", 1))
receive_shallow_info(args, &reader);
if (process_section_header(&reader, "wanted-refs", 1))
receive_wanted_refs(&reader, sought, nr_sought);
/* get the pack */
process_section_header(&reader, "packfile", 0);
if (get_pack(args, fd, pack_lockfile))
die(_("git fetch-pack: fetch failed."));
state = FETCH_DONE;
break;
case FETCH_DONE:
continue;
}
}
negotiator.release(&negotiator);
oidset_clear(&common);
return ref;
}
