Line data Source code
1 : #include "fd_sysvar_clock.h"
2 : #include "fd_sysvar_epoch_schedule.h"
3 : #include "../fd_runtime_stack.h"
4 : #include "../fd_system_ids.h"
5 : #include "../program/fd_program_util.h"
6 : #include "../program/vote/fd_vote_state_versioned.h"
7 : #include "../program/vote/fd_vote_codec.h"
8 : #include "../../accdb/fd_accdb_sync.h"
9 :
10 : /* Syvar Clock Possible Values:
11 : slot:
12 : [0, ULONG_MAX]
13 :
14 : epoch:
15 : [0, slot/432000UL]
16 :
17 : epoch_start_timestamp:
18 : [0, ULONG_MAX]
19 :
20 : unix_timestamp:
21 : This value is bounded by the slot distance from the
22 : epoch_start_timestamp.
23 : The protocol allows for a maximum drift (either fast or slow) from the
24 : start of the epoch's timestamp. The expected time is called the PoH
25 : offset. This offset is calculated by (epoch_start_timestamp + slots
26 : since epoch * slot_duration). The drift is then bounded by the
27 : max_allowable_drift_{slow,fast}. The stake weighted offset can be
28 : 150% more than the PoH offset and 25% less than the PoH offset.
29 : So, the bounds for the unix_timestamp can be calculated by:
30 : upper bound = epoch_start_timestamp + (slots since epoch * slot_duration) * 2.5
31 : lower bound = epoch_start_timestamp + (slots since epoch * slot_duration) * 0.75
32 :
33 : leader_schedule_epoch:
34 : This is the value of the epoch used for the leader schedule. It is
35 : computed based on the values of the epoch schedule (first_normal_slot,
36 : leader_schedule_slot_offset, slots_per_epoch). It is always equal to
37 : ((slot - first_normal_slot) + leader_schedule_slot_offset) / schedule->slots_per_epoch
38 : */
39 :
40 : /* https://github.com/anza-xyz/agave/blob/v2.3.7/runtime/src/stake_weighted_timestamp.rs#L14 */
41 3378 : #define MAX_ALLOWABLE_DRIFT_FAST_PERCENT ( 25U )
42 :
43 : /* https://github.com/anza-xyz/agave/blob/v2.3.7/runtime/src/stake_weighted_timestamp.rs#L15 */
44 3378 : #define MAX_ALLOWABLE_DRIFT_SLOW_PERCENT ( 150U )
45 :
46 : /* Do all intermediate calculations at nanosecond precision, to mirror
47 : Solana's behavior. */
48 6780 : #define NS_IN_S ((long)1e9)
49 :
50 : /* https://github.com/anza-xyz/agave/blob/v2.3.7/runtime/src/bank.rs#L2110-L2117 */
51 : static inline long
52 18 : unix_timestamp_from_genesis( fd_bank_t * bank ) {
53 : /* TODO: genesis_creation_time needs to be a long in the bank. */
54 18 : return fd_long_sat_add(
55 18 : (long)bank->f.genesis_creation_time,
56 18 : (long)( fd_uint128_sat_mul( bank->f.slot, bank->f.ns_per_slot.ud ) / NS_IN_S ) );
57 18 : }
58 :
59 : fd_sol_sysvar_clock_t *
60 : fd_sysvar_clock_read( fd_accdb_user_t * accdb,
61 : fd_funk_txn_xid_t const * xid,
62 3528 : fd_sol_sysvar_clock_t * clock ) {
63 3528 : fd_accdb_ro_t ro[1];
64 3528 : if( FD_UNLIKELY( !fd_accdb_open_ro( accdb, ro, xid, &fd_sysvar_clock_id ) ) ) {
65 0 : return NULL;
66 0 : }
67 :
68 : /* This check is needed as a quirk of the fuzzer. If a sysvar account
69 : exists in the accounts database, but doesn't have any lamports,
70 : this means that the account does not exist. This wouldn't happen
71 : in a real execution environment. */
72 3528 : if( FD_UNLIKELY( fd_accdb_ref_lamports( ro ) == 0UL ||
73 3528 : fd_accdb_ref_data_sz ( ro ) < sizeof(fd_sol_sysvar_clock_t) ) ) {
74 0 : fd_accdb_close_ro( accdb, ro );
75 0 : return NULL;
76 0 : }
77 :
78 3528 : fd_memcpy( clock, fd_accdb_ref_data_const( ro ), sizeof(fd_sol_sysvar_clock_t) );
79 3528 : fd_accdb_close_ro( accdb, ro );
80 3528 : return clock;
81 3528 : }
82 :
83 : void
84 : fd_sysvar_clock_init( fd_bank_t * bank,
85 : fd_accdb_user_t * accdb,
86 : fd_funk_txn_xid_t const * xid,
87 18 : fd_capture_ctx_t * capture_ctx ) {
88 18 : long timestamp = unix_timestamp_from_genesis( bank );
89 :
90 18 : fd_sol_sysvar_clock_t clock = {
91 18 : .slot = bank->f.slot,
92 18 : .epoch = 0,
93 18 : .epoch_start_timestamp = timestamp,
94 18 : .leader_schedule_epoch = 1,
95 18 : .unix_timestamp = timestamp,
96 18 : };
97 18 : fd_sysvar_clock_write( bank, accdb, xid, capture_ctx, &clock );
98 18 : }
99 :
100 : #define SORT_NAME sort_stake_ts
101 12 : #define SORT_KEY_T ts_est_ele_t
102 6 : #define SORT_BEFORE(a,b) ( (a).timestamp < (b).timestamp )
103 : #include "../../../util/tmpl/fd_sort.c"
104 :
105 : static void
106 : accum_vote_stakes_no_vat( fd_accdb_user_t * accdb,
107 : fd_funk_txn_xid_t const * xid,
108 : fd_bank_t * bank,
109 : fd_runtime_stack_t * runtime_stack,
110 : uint128 * total_stake_out,
111 3516 : ulong * ts_ele_cnt_out ) {
112 :
113 3516 : ts_est_ele_t * ts_eles = runtime_stack->clock_ts.staked_ts;
114 3516 : ulong ts_ele_cnt = 0UL;
115 :
116 3516 : uint128 total_stake = 0UL;
117 :
118 3516 : fd_epoch_schedule_t const * epoch_schedule = &bank->f.epoch_schedule;
119 3516 : ulong slot_duration = bank->f.ns_per_slot.ul[0];
120 3516 : ulong current_slot = bank->f.slot;
121 :
122 3516 : fd_vote_stakes_t * vote_stakes = fd_bank_vote_stakes( bank );
123 3516 : ushort fork_idx = bank->vote_stakes_fork_id;
124 :
125 3516 : fd_top_votes_t const * top_votes = fd_bank_top_votes_t_2_query( bank );
126 :
127 3516 : uchar __attribute__((aligned(FD_VOTE_STAKES_ITER_ALIGN))) iter_mem[ FD_VOTE_STAKES_ITER_FOOTPRINT ];
128 3516 : for( fd_vote_stakes_iter_t * iter = fd_vote_stakes_fork_iter_init( vote_stakes, fork_idx, iter_mem );
129 7032 : !fd_vote_stakes_fork_iter_done( vote_stakes, fork_idx, iter );
130 3516 : fd_vote_stakes_fork_iter_next( vote_stakes, fork_idx, iter ) ) {
131 3516 : fd_pubkey_t pubkey;
132 3516 : ulong stake_t_2;
133 3516 : fd_vote_stakes_fork_iter_ele( vote_stakes, fork_idx, iter, &pubkey, NULL, &stake_t_2, NULL, NULL, NULL, NULL );
134 3516 : if( FD_UNLIKELY( !stake_t_2 ) ) continue;
135 :
136 3516 : ulong last_vote_slot;
137 3516 : long last_vote_timestamp;
138 3516 : int found = fd_top_votes_query( top_votes, &pubkey, NULL, NULL, &last_vote_slot, &last_vote_timestamp, NULL );
139 3516 : if( FD_UNLIKELY( !found ) ) {
140 12 : fd_accdb_ro_t ro[1];
141 12 : if( FD_UNLIKELY( !fd_accdb_open_ro( accdb, ro, xid, &pubkey ) ) ) {
142 0 : continue;
143 0 : }
144 12 : if( FD_UNLIKELY( !fd_vsv_is_correct_size_owner_and_init( ro->meta ) ) ) {
145 0 : fd_accdb_close_ro( accdb, ro );
146 0 : continue;
147 0 : }
148 12 : fd_vote_block_timestamp_t last_vote;
149 12 : FD_TEST( !fd_vote_account_last_timestamp( fd_account_data( ro->meta ), ro->meta->dlen, &last_vote ) );
150 12 : fd_accdb_close_ro( accdb, ro );
151 12 : last_vote_slot = last_vote.slot;
152 12 : last_vote_timestamp = last_vote.timestamp;
153 12 : }
154 :
155 : /* https://github.com/anza-xyz/agave/blob/v3.0.0/runtime/src/bank.rs#L2445 */
156 3516 : ulong slot_delta;
157 3516 : int err = fd_ulong_checked_sub( current_slot, last_vote_slot, &slot_delta );
158 3516 : if( FD_UNLIKELY( err ) ) {
159 : /* Don't count vote accounts with a last vote slot that is greater
160 : than the current slot. */
161 0 : continue;
162 0 : }
163 :
164 : /* Don't count vote accounts that haven't voted in the past 432k
165 : slots (length of an epoch).
166 : https://github.com/anza-xyz/agave/blob/v3.0.0/runtime/src/bank.rs#L2446-L2447 */
167 3516 : if( FD_UNLIKELY( slot_delta>epoch_schedule->slots_per_epoch ) ) {
168 132 : continue;
169 132 : }
170 :
171 : /* Calculate the timestamp estimate by taking the last vote
172 : timestamp and adding the estimated time since the last vote
173 : (delta from last vote slot to current slot * slot duration).
174 : https://github.com/anza-xyz/agave/blob/v2.3.7/runtime/src/stake_weighted_timestamp.rs#L44-L45 */
175 3384 : ulong offset = fd_ulong_sat_mul( slot_duration, slot_delta );
176 3384 : long estimate = fd_long_sat_add( last_vote_timestamp, (long)(offset / NS_IN_S) );
177 :
178 : /* For each timestamp, accumulate the stake from E-2. If the entry
179 : for the timestamp doesn't exist yet, insert it. Otherwise,
180 : update the existing entry.
181 : https://github.com/anza-xyz/agave/blob/v2.3.7/runtime/src/stake_weighted_timestamp.rs#L46-L53 */
182 3384 : ts_eles[ ts_ele_cnt ] = (ts_est_ele_t){
183 3384 : .timestamp = estimate,
184 3384 : .stake = { .ud=stake_t_2 },
185 3384 : };
186 3384 : ts_ele_cnt++;
187 :
188 : /* https://github.com/anza-xyz/agave/blob/v2.3.7/runtime/src/stake_weighted_timestamp.rs#L54 */
189 3384 : total_stake += stake_t_2;
190 3384 : }
191 3516 : fd_vote_stakes_fork_iter_fini( vote_stakes );
192 :
193 3516 : *total_stake_out = total_stake;
194 3516 : *ts_ele_cnt_out = ts_ele_cnt;
195 3516 : }
196 :
197 : static void
198 : accum_vote_stakes_vat( fd_bank_t * bank,
199 : fd_runtime_stack_t * runtime_stack,
200 : uint128 * total_stake_out,
201 12 : ulong * ts_ele_cnt_out ) {
202 :
203 12 : ts_est_ele_t * ts_eles = runtime_stack->clock_ts.staked_ts;
204 12 : ulong ts_ele_cnt = 0UL;
205 :
206 12 : uint128 total_stake = 0UL;
207 :
208 12 : fd_epoch_schedule_t const * epoch_schedule = &bank->f.epoch_schedule;
209 12 : ulong slot_duration = bank->f.ns_per_slot.ul[0];
210 12 : ulong current_slot = bank->f.slot;
211 :
212 12 : fd_top_votes_t const * top_votes = fd_bank_top_votes_t_2_query( bank );
213 :
214 12 : uchar __attribute__((aligned(FD_TOP_VOTES_ITER_ALIGN))) iter_mem[ FD_TOP_VOTES_ITER_FOOTPRINT ];
215 12 : for( fd_top_votes_iter_t * iter = fd_top_votes_iter_init( top_votes, iter_mem );
216 12 : !fd_top_votes_iter_done( top_votes, iter );
217 12 : fd_top_votes_iter_next( top_votes, iter ) ) {
218 0 : fd_pubkey_t pubkey;
219 0 : ulong stake_t_2;
220 0 : ulong last_vote_slot;
221 0 : long last_vote_timestamp;
222 0 : int is_valid = fd_top_votes_iter_ele( top_votes, iter, &pubkey, NULL, &stake_t_2, NULL, &last_vote_slot, &last_vote_timestamp );
223 0 : if( FD_UNLIKELY( !is_valid ) ) continue;
224 :
225 : /* https://github.com/anza-xyz/agave/blob/v3.0.0/runtime/src/bank.rs#L2445 */
226 0 : ulong slot_delta;
227 0 : int err = fd_ulong_checked_sub( current_slot, last_vote_slot, &slot_delta );
228 0 : if( FD_UNLIKELY( err ) ) {
229 : /* Don't count vote accounts with a last vote slot that is greater
230 : than the current slot. */
231 0 : continue;
232 0 : }
233 :
234 : /* Don't count vote accounts that haven't voted in the past 432k
235 : slots (length of an epoch).
236 : https://github.com/anza-xyz/agave/blob/v3.0.0/runtime/src/bank.rs#L2446-L2447 */
237 0 : if( FD_UNLIKELY( slot_delta>epoch_schedule->slots_per_epoch ) ) {
238 0 : continue;
239 0 : }
240 :
241 : /* Calculate the timestamp estimate by taking the last vote
242 : timestamp and adding the estimated time since the last vote
243 : (delta from last vote slot to current slot * slot duration).
244 : https://github.com/anza-xyz/agave/blob/v2.3.7/runtime/src/stake_weighted_timestamp.rs#L44-L45 */
245 0 : ulong offset = fd_ulong_sat_mul( slot_duration, slot_delta );
246 0 : long estimate = fd_long_sat_add( last_vote_timestamp, (long)(offset / NS_IN_S) );
247 :
248 : /* For each timestamp, accumulate the stake from E-2. If the entry
249 : for the timestamp doesn't exist yet, insert it. Otherwise,
250 : update the existing entry.
251 : https://github.com/anza-xyz/agave/blob/v2.3.7/runtime/src/stake_weighted_timestamp.rs#L46-L53 */
252 0 : ts_eles[ ts_ele_cnt ] = (ts_est_ele_t){
253 0 : .timestamp = estimate,
254 0 : .stake = { .ud=stake_t_2 },
255 0 : };
256 0 : ts_ele_cnt++;
257 :
258 : /* https://github.com/anza-xyz/agave/blob/v2.3.7/runtime/src/stake_weighted_timestamp.rs#L54 */
259 0 : total_stake += stake_t_2;
260 0 : }
261 :
262 12 : *total_stake_out = total_stake;
263 12 : *ts_ele_cnt_out = ts_ele_cnt;
264 12 : }
265 :
266 : /* get_timestamp_estimate calculates a timestamp estimate. Does not
267 : modify the slot context. Walks all cached vote accounts (from the
268 : "bank") and calculates a unix timestamp estimate. Returns the
269 : timestamp estimate. spad is used for scratch allocations (allocates
270 : a treap of size FD_SYSVAR_CLOCK_STAKE_WEIGHTS_MAX). Crashes the
271 : process with FD_LOG_ERR on failure (e.g. too many vote accounts).
272 :
273 : https://github.com/anza-xyz/agave/blob/v2.3.7/runtime/src/bank.rs#L2563-L2601 */
274 : static long
275 : get_timestamp_estimate( fd_accdb_user_t * accdb,
276 : fd_funk_txn_xid_t const * xid,
277 : fd_bank_t * bank,
278 : fd_sol_sysvar_clock_t * clock,
279 : fd_runtime_stack_t * runtime_stack,
280 3528 : ulong const * parent_epoch ) {
281 3528 : fd_epoch_schedule_t const * epoch_schedule = &bank->f.epoch_schedule;
282 3528 : ulong slot_duration = bank->f.ns_per_slot.ul[0];
283 3528 : ulong current_slot = bank->f.slot;
284 :
285 3528 : ts_est_ele_t * ts_eles = runtime_stack->clock_ts.staked_ts;
286 :
287 : /* https://github.com/anza-xyz/agave/blob/v2.3.7/runtime/src/stake_weighted_timestamp.rs#L41 */
288 3528 : ulong ts_ele_cnt = 0UL;
289 3528 : uint128 total_stake = 0UL;
290 :
291 : /* A timestamp estimate is calculated at every slot using the most
292 : recent vote states of voting validators. This estimated is based on
293 : a stake weighted median using the stake as of the end of epoch E-2
294 : if we are currently in epoch E. We do not count vote accounts that
295 : have not voted in an epoch's worth of slots (432k). */
296 :
297 3528 : ulong curr_epoch = fd_slot_to_epoch( epoch_schedule, bank->f.slot, NULL );
298 3528 : ulong vat_epoch = fd_slot_to_epoch( epoch_schedule, bank->f.features.validator_admission_ticket, NULL );
299 :
300 3528 : if( curr_epoch>=vat_epoch+1UL ) {
301 12 : accum_vote_stakes_vat( bank, runtime_stack, &total_stake, &ts_ele_cnt );
302 3516 : } else {
303 3516 : accum_vote_stakes_no_vat( accdb, xid, bank, runtime_stack, &total_stake, &ts_ele_cnt );
304 3516 : }
305 :
306 : /* https://github.com/anza-xyz/agave/blob/v2.3.7/runtime/src/stake_weighted_timestamp.rs#L56-L58 */
307 3528 : if( FD_UNLIKELY( total_stake==0UL ) ) {
308 150 : return 0L;
309 150 : }
310 :
311 3378 : sort_stake_ts_inplace( ts_eles, ts_ele_cnt );
312 :
313 : /* Populate estimate with the stake-weighted median timestamp.
314 : https://github.com/anza-xyz/agave/blob/v2.3.7/runtime/src/stake_weighted_timestamp.rs#L59-L68 */
315 3378 : uint128 stake_accumulator = 0;
316 3378 : long estimate = 0L;
317 3384 : for( ulong i=0UL; i<ts_ele_cnt; i++ ) {
318 3384 : stake_accumulator = fd_uint128_sat_add( stake_accumulator, ts_eles[i].stake.ud );
319 3384 : if( stake_accumulator>(total_stake/2UL) ) {
320 3378 : estimate = ts_eles[ i ].timestamp;
321 3378 : break;
322 3378 : }
323 3384 : }
324 :
325 3378 : int const fix_estimate_into_u64 = FD_FEATURE_ACTIVE_BANK( bank, warp_timestamp_again );
326 :
327 : /* Bound estimate by `max_allowable_drift` since the start of the
328 : epoch.
329 : https://github.com/anza-xyz/agave/blob/v2.3.7/runtime/src/stake_weighted_timestamp.rs#L69-L99 */
330 3378 : ulong epoch_for_start_slot = parent_epoch ? *parent_epoch : curr_epoch;
331 3378 : ulong epoch_start_slot = fd_epoch_slot0( epoch_schedule, epoch_for_start_slot );
332 3378 : long epoch_start_timestamp = clock->epoch_start_timestamp;
333 :
334 : /* https://github.com/anza-xyz/agave/blob/v2.3.7/runtime/src/stake_weighted_timestamp.rs#L71-L72 */
335 3378 : ulong poh_estimate_offset = fd_ulong_sat_mul( slot_duration, fd_ulong_sat_sub( current_slot, epoch_start_slot ) );
336 :
337 : /* https://github.com/anza-xyz/agave/blob/v2.3.7/runtime/src/stake_weighted_timestamp.rs#L73-L77 */
338 3378 : ulong estimate_offset;
339 3378 : if( fix_estimate_into_u64 ) {
340 0 : estimate_offset = fd_ulong_sat_mul( NS_IN_S, fd_ulong_sat_sub( (ulong)estimate, (ulong)epoch_start_timestamp ) );
341 3378 : } else {
342 3378 : estimate_offset = fd_ulong_sat_mul( NS_IN_S, (ulong)fd_long_sat_sub( estimate, epoch_start_timestamp ) );
343 3378 : }
344 :
345 : /* https://github.com/anza-xyz/agave/blob/v2.3.7/runtime/src/stake_weighted_timestamp.rs#L78-L81 */
346 3378 : ulong max_allowable_drift_fast = fd_ulong_sat_mul( poh_estimate_offset, MAX_ALLOWABLE_DRIFT_FAST_PERCENT ) / 100UL;
347 3378 : ulong max_allowable_drift_slow = fd_ulong_sat_mul( poh_estimate_offset, MAX_ALLOWABLE_DRIFT_SLOW_PERCENT ) / 100UL;
348 :
349 : /* https://github.com/anza-xyz/agave/blob/v2.3.7/runtime/src/stake_weighted_timestamp.rs#L82-L98 */
350 3378 : if( estimate_offset>poh_estimate_offset && fd_ulong_sat_sub( estimate_offset, poh_estimate_offset )>max_allowable_drift_slow ) {
351 0 : estimate = fd_long_sat_add(
352 0 : epoch_start_timestamp,
353 0 : fd_long_sat_add( (long)poh_estimate_offset / NS_IN_S, (long)max_allowable_drift_slow / NS_IN_S ) );
354 3378 : } else if( estimate_offset<poh_estimate_offset && fd_ulong_sat_sub( poh_estimate_offset, estimate_offset )>max_allowable_drift_fast ) {
355 0 : estimate = fd_long_sat_sub(
356 0 : fd_long_sat_add( epoch_start_timestamp, (long)poh_estimate_offset / NS_IN_S ),
357 0 : (long)max_allowable_drift_fast / NS_IN_S );
358 0 : }
359 :
360 3378 : return estimate;
361 3528 : }
362 :
363 : /* TODO: This function should be called from genesis bootup as well with
364 : parent_epoch = NULL
365 : https://github.com/anza-xyz/agave/blob/v2.3.7/runtime/src/bank.rs#L2158-L2215 */
366 : void
367 : fd_sysvar_clock_update( fd_bank_t * bank,
368 : fd_accdb_user_t * accdb,
369 : fd_funk_txn_xid_t const * xid,
370 : fd_capture_ctx_t * capture_ctx,
371 : fd_runtime_stack_t * runtime_stack,
372 3528 : ulong const * parent_epoch ) {
373 3528 : fd_sol_sysvar_clock_t clock_[1];
374 3528 : fd_sol_sysvar_clock_t * clock = fd_sysvar_clock_read( accdb, xid, clock_ );
375 3528 : if( FD_UNLIKELY( !clock ) ) FD_LOG_ERR(( "fd_sysvar_clock_read failed" ));
376 :
377 3528 : fd_epoch_schedule_t const * epoch_schedule = &bank->f.epoch_schedule;
378 3528 : ulong current_slot = bank->f.slot;
379 3528 : ulong current_epoch = fd_slot_to_epoch( epoch_schedule, current_slot, NULL );
380 :
381 : /* https://github.com/anza-xyz/agave/blob/v2.3.7/runtime/src/bank.rs#L2159 */
382 3528 : long unix_timestamp = clock->unix_timestamp;
383 :
384 : /* https://github.com/anza-xyz/agave/blob/v2.3.7/runtime/src/bank.rs#L2175 */
385 3528 : long ancestor_timestamp = clock->unix_timestamp;
386 :
387 : /* TODO: Are we handling slot 0 correctly?
388 : https://github.com/anza-xyz/agave/blob/v2.3.7/runtime/src/bank.rs#L2176-L2183 */
389 3528 : long timestamp_estimate = get_timestamp_estimate( accdb, xid, bank, clock, runtime_stack, parent_epoch );
390 :
391 : /* If the timestamp was successfully calculated, use it. It not keep the old one. */
392 3528 : if( FD_LIKELY( timestamp_estimate!=0L ) ) {
393 0 : unix_timestamp = timestamp_estimate;
394 :
395 : /* https://github.com/anza-xyz/agave/blob/v2.3.7/runtime/src/bank.rs#L2180-L2182 */
396 0 : if( timestamp_estimate<ancestor_timestamp ) {
397 0 : unix_timestamp = ancestor_timestamp;
398 0 : }
399 0 : }
400 :
401 : /* https://github.com/anza-xyz/agave/blob/v2.3.7/runtime/src/bank.rs#L2191-L2197 */
402 3528 : long epoch_start_timestamp = (parent_epoch!=NULL && *parent_epoch!=current_epoch) ?
403 129 : unix_timestamp :
404 3528 : clock->epoch_start_timestamp;
405 :
406 : /* https://github.com/anza-xyz/agave/blob/v2.3.7/runtime/src/bank.rs#L2198-L2201 */
407 3528 : if( FD_UNLIKELY( current_slot==0UL ) ) {
408 0 : long timestamp_from_genesis = unix_timestamp_from_genesis( bank );
409 0 : unix_timestamp = timestamp_from_genesis;
410 0 : epoch_start_timestamp = timestamp_from_genesis;
411 0 : }
412 :
413 : /* https://github.com/anza-xyz/agave/blob/v2.3.7/runtime/src/bank.rs#L2202-L2208 */
414 3528 : *clock = (fd_sol_sysvar_clock_t){
415 3528 : .slot = current_slot,
416 3528 : .epoch_start_timestamp = epoch_start_timestamp,
417 3528 : .epoch = current_epoch,
418 3528 : .leader_schedule_epoch = fd_slot_to_leader_schedule_epoch( epoch_schedule, current_slot ),
419 3528 : .unix_timestamp = unix_timestamp,
420 3528 : };
421 :
422 : /* https://github.com/anza-xyz/agave/blob/v2.3.7/runtime/src/bank.rs#L2209-L2214 */
423 3528 : fd_sysvar_clock_write( bank, accdb, xid, capture_ctx, clock );
424 3528 : }
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