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 "../sysvar/fd_sysvar.h"
6 : #include "../program/vote/fd_vote_state_versioned.h"
7 :
8 : /* Syvar Clock Possible Values:
9 : slot:
10 : [0, ULONG_MAX]
11 :
12 : epoch:
13 : [0, slot/432000UL]
14 :
15 : epoch_start_timestamp:
16 : [0, ULONG_MAX]
17 :
18 : unix_timestamp:
19 : This value is bounded by the slot distance from the
20 : epoch_start_timestamp.
21 : The protocol allows for a maximum drift (either fast or slow) from the
22 : start of the epoch's timestamp. The expected time is called the PoH
23 : offset. This offset is calculated by (epoch_start_timestamp + slots
24 : since epoch * slot_duration). The drift is then bounded by the
25 : max_allowable_drift_{slow,fast}. The stake weighted offset can be
26 : 150% more than the PoH offset and 25% less than the PoH offset.
27 : So, the bounds for the unix_timestamp can be calculated by:
28 : upper bound = epoch_start_timestamp + (slots since epoch * slot_duration) * 2.5
29 : lower bound = epoch_start_timestamp + (slots since epoch * slot_duration) * 0.75
30 :
31 : leader_schedule_epoch:
32 : This is the value of the epoch used for the leader schedule. It is
33 : computed based on the values of the epoch schedule (first_normal_slot,
34 : leader_schedule_slot_offset, slots_per_epoch). It is always equal to
35 : ((slot - first_normal_slot) + leader_schedule_slot_offset) / schedule->slots_per_epoch
36 : */
37 :
38 : /* https://github.com/anza-xyz/agave/blob/v2.3.7/runtime/src/stake_weighted_timestamp.rs#L14 */
39 3597 : #define MAX_ALLOWABLE_DRIFT_FAST_PERCENT ( 25U )
40 :
41 : /* https://github.com/anza-xyz/agave/blob/v2.3.7/runtime/src/stake_weighted_timestamp.rs#L15 */
42 3597 : #define MAX_ALLOWABLE_DRIFT_SLOW_PERCENT ( 150U )
43 :
44 : /* Do all intermediate calculations at nanosecond precision, to mirror
45 : Solana's behavior. */
46 7488 : #define NS_IN_S ((long)1e9)
47 :
48 : /* FD_SYSVAR_CLOCK_STAKE_WEIGHTS_MAX specifies the max number of stake
49 : weights processed in a clock update. */
50 :
51 : #define FD_SYSVAR_CLOCK_STAKE_WEIGHTS_MAX (10240UL)
52 :
53 : /* https://github.com/anza-xyz/agave/blob/v2.3.7/runtime/src/bank.rs#L2110-L2117 */
54 : static inline long
55 9 : unix_timestamp_from_genesis( fd_bank_t * bank ) {
56 : /* TODO: genesis_creation_time needs to be a long in the bank. */
57 9 : return fd_long_sat_add(
58 9 : (long)bank->f.genesis_creation_time,
59 9 : (long)( fd_uint128_sat_mul( bank->f.slot, bank->f.ns_per_slot.ud ) / NS_IN_S ) );
60 9 : }
61 :
62 : static void
63 : fd_sysvar_clock_write( fd_bank_t * bank,
64 : fd_accdb_t * accdb,
65 : fd_capture_ctx_t * capture_ctx,
66 3801 : fd_sol_sysvar_clock_t const * clock ) {
67 3801 : fd_sysvar_account_update( bank, accdb, capture_ctx, &fd_sysvar_clock_id, clock, sizeof(fd_sol_sysvar_clock_t) );
68 3801 : }
69 :
70 : fd_sol_sysvar_clock_t *
71 : fd_sysvar_clock_read( fd_accdb_t * accdb,
72 : fd_accdb_fork_id_t fork_id,
73 3828 : fd_sol_sysvar_clock_t * clock ) {
74 3828 : fd_acc_t acc = fd_accdb_read_one( accdb, fork_id, fd_sysvar_clock_id.uc );
75 3828 : if( FD_UNLIKELY( !acc.lamports || acc.data_len<sizeof(fd_sol_sysvar_clock_t) ) ) {
76 : /* This check is needed as a quirk of the fuzzer. If a sysvar
77 : account exists in the accounts database, but doesn't have any
78 : lamports, this means that the account does not exist. This
79 : wouldn't happen in a real execution environment. */
80 0 : fd_accdb_unread_one( accdb, &acc );
81 0 : return NULL;
82 0 : }
83 :
84 3828 : fd_memcpy( clock, acc.data, sizeof(fd_sol_sysvar_clock_t) );
85 3828 : fd_accdb_unread_one( accdb, &acc );
86 3828 : return clock;
87 3828 : }
88 :
89 : void
90 : fd_sysvar_clock_init( fd_bank_t * bank,
91 : fd_accdb_t * accdb,
92 9 : fd_capture_ctx_t * capture_ctx ) {
93 9 : long timestamp = unix_timestamp_from_genesis( bank );
94 :
95 9 : fd_sol_sysvar_clock_t clock = {
96 9 : .slot = bank->f.slot,
97 9 : .epoch = 0,
98 9 : .epoch_start_timestamp = timestamp,
99 9 : .leader_schedule_epoch = 1,
100 9 : .unix_timestamp = timestamp,
101 9 : };
102 9 : fd_sysvar_clock_write( bank, accdb, capture_ctx, &clock );
103 9 : }
104 :
105 : #define SORT_NAME sort_stake_ts
106 303 : #define SORT_KEY_T ts_est_ele_t
107 174 : #define SORT_BEFORE(a,b) ( (a).timestamp < (b).timestamp )
108 : #include "../../../util/tmpl/fd_sort.c"
109 :
110 : static void
111 : accum_vote_stakes_no_vat( fd_bank_t * bank,
112 : fd_accdb_t * accdb,
113 : fd_runtime_stack_t * runtime_stack,
114 : uint128 * total_stake_out,
115 3744 : ulong * ts_ele_cnt_out ) {
116 :
117 3744 : ts_est_ele_t * ts_eles = runtime_stack->clock_ts.staked_ts;
118 3744 : ulong ts_ele_cnt = 0UL;
119 :
120 3744 : uint128 total_stake = 0UL;
121 :
122 3744 : fd_epoch_schedule_t const * epoch_schedule = &bank->f.epoch_schedule;
123 3744 : ulong slot_duration = bank->f.ns_per_slot.ul[0];
124 3744 : ulong current_slot = bank->f.slot;
125 :
126 3744 : fd_vote_stakes_t * vote_stakes = fd_bank_vote_stakes( bank );
127 3744 : ushort fork_idx = bank->vote_stakes_fork_id;
128 :
129 3744 : fd_top_votes_t const * top_votes = fd_bank_top_votes_t_2_query( bank );
130 :
131 3744 : uchar __attribute__((aligned(FD_VOTE_STAKES_ITER_ALIGN))) iter_mem[ FD_VOTE_STAKES_ITER_FOOTPRINT ];
132 3744 : for( fd_vote_stakes_iter_t * iter = fd_vote_stakes_fork_iter_init( vote_stakes, fork_idx, iter_mem );
133 7611 : !fd_vote_stakes_fork_iter_done( vote_stakes, fork_idx, iter );
134 3867 : fd_vote_stakes_fork_iter_next( vote_stakes, fork_idx, iter ) ) {
135 3867 : fd_pubkey_t pubkey;
136 3867 : ulong stake_t_2;
137 3867 : fd_vote_stakes_fork_iter_ele( vote_stakes, fork_idx, iter, &pubkey, NULL, &stake_t_2, NULL, NULL, NULL, NULL );
138 3867 : if( FD_UNLIKELY( !stake_t_2 ) ) continue;
139 :
140 3867 : ulong last_vote_slot;
141 3867 : long last_vote_timestamp;
142 3867 : uchar is_valid = 1;
143 3867 : int found = fd_top_votes_query( top_votes, &pubkey, NULL, NULL, &last_vote_slot, &last_vote_timestamp, NULL, &is_valid );
144 3867 : if( FD_UNLIKELY( !found ) ) {
145 84 : fd_acc_t acc = fd_accdb_read_one( accdb, bank->accdb_fork_id, pubkey.uc );
146 84 : if( FD_UNLIKELY( !acc.lamports || !fd_vsv_is_correct_size_owner_and_init( acc.owner, acc.data, acc.data_len ) ) ) {
147 0 : fd_accdb_unread_one( accdb, &acc );
148 0 : continue;
149 0 : }
150 :
151 84 : fd_vote_block_timestamp_t last_vote;
152 84 : FD_TEST( !fd_vote_account_last_timestamp( acc.data, acc.data_len, &last_vote ) );
153 84 : fd_accdb_unread_one( accdb, &acc );
154 84 : last_vote_slot = last_vote.slot;
155 84 : last_vote_timestamp = last_vote.timestamp;
156 84 : }
157 3867 : if( FD_UNLIKELY( !is_valid ) ) continue;
158 :
159 : /* https://github.com/anza-xyz/agave/blob/v3.0.0/runtime/src/bank.rs#L2445 */
160 3867 : ulong slot_delta;
161 3867 : int err = fd_ulong_checked_sub( current_slot, last_vote_slot, &slot_delta );
162 3867 : if( FD_UNLIKELY( err ) ) {
163 : /* Don't count vote accounts with a last vote slot that is greater
164 : than the current slot. */
165 0 : continue;
166 0 : }
167 :
168 : /* Don't count vote accounts that haven't voted in the past 432k
169 : slots (length of an epoch).
170 : https://github.com/anza-xyz/agave/blob/v3.0.0/runtime/src/bank.rs#L2446-L2447 */
171 3867 : if( FD_UNLIKELY( slot_delta>epoch_schedule->slots_per_epoch ) ) {
172 252 : continue;
173 252 : }
174 :
175 : /* Calculate the timestamp estimate by taking the last vote
176 : timestamp and adding the estimated time since the last vote
177 : (delta from last vote slot to current slot * slot duration).
178 : https://github.com/anza-xyz/agave/blob/v2.3.7/runtime/src/stake_weighted_timestamp.rs#L44-L45 */
179 3615 : ulong offset = fd_ulong_sat_mul( slot_duration, slot_delta );
180 3615 : long estimate = fd_long_sat_add( last_vote_timestamp, (long)(offset / NS_IN_S) );
181 :
182 : /* For each timestamp, accumulate the stake from E-2. If the acc
183 : for the timestamp doesn't exist yet, insert it. Otherwise,
184 : update the existing acc.
185 : https://github.com/anza-xyz/agave/blob/v2.3.7/runtime/src/stake_weighted_timestamp.rs#L46-L53 */
186 3615 : ts_eles[ ts_ele_cnt ] = (ts_est_ele_t){
187 3615 : .timestamp = estimate,
188 3615 : .stake = { .ud=stake_t_2 },
189 3615 : };
190 3615 : ts_ele_cnt++;
191 :
192 : /* https://github.com/anza-xyz/agave/blob/v2.3.7/runtime/src/stake_weighted_timestamp.rs#L54 */
193 3615 : total_stake += stake_t_2;
194 3615 : }
195 3744 : fd_vote_stakes_fork_iter_fini( vote_stakes );
196 :
197 3744 : *total_stake_out = total_stake;
198 3744 : *ts_ele_cnt_out = ts_ele_cnt;
199 3744 : }
200 :
201 : static void
202 : accum_vote_stakes_vat( fd_bank_t * bank,
203 : fd_runtime_stack_t * runtime_stack,
204 : uint128 * total_stake_out,
205 48 : ulong * ts_ele_cnt_out ) {
206 :
207 48 : ts_est_ele_t * ts_eles = runtime_stack->clock_ts.staked_ts;
208 48 : ulong ts_ele_cnt = 0UL;
209 :
210 48 : uint128 total_stake = 0UL;
211 :
212 48 : fd_epoch_schedule_t const * epoch_schedule = &bank->f.epoch_schedule;
213 48 : ulong slot_duration = bank->f.ns_per_slot.ul[0];
214 48 : ulong current_slot = bank->f.slot;
215 :
216 48 : fd_top_votes_t const * top_votes = fd_bank_top_votes_t_2_query( bank );
217 :
218 48 : uchar __attribute__((aligned(FD_TOP_VOTES_ITER_ALIGN))) iter_mem[ FD_TOP_VOTES_ITER_FOOTPRINT ];
219 48 : for( fd_top_votes_iter_t * iter = fd_top_votes_iter_init( top_votes, iter_mem );
220 168 : !fd_top_votes_iter_done( top_votes, iter );
221 120 : fd_top_votes_iter_next( top_votes, iter ) ) {
222 120 : fd_pubkey_t pubkey;
223 120 : ulong stake_t_2;
224 120 : ulong last_vote_slot;
225 120 : long last_vote_timestamp;
226 120 : uchar is_valid;
227 120 : fd_top_votes_iter_ele( top_votes, iter, &pubkey, NULL, &stake_t_2, NULL, &last_vote_slot, &last_vote_timestamp, &is_valid );
228 120 : if( FD_UNLIKELY( !is_valid ) ) continue;
229 :
230 : /* https://github.com/anza-xyz/agave/blob/v3.0.0/runtime/src/bank.rs#L2445 */
231 111 : ulong slot_delta;
232 111 : int err = fd_ulong_checked_sub( current_slot, last_vote_slot, &slot_delta );
233 111 : if( FD_UNLIKELY( err ) ) {
234 : /* Don't count vote accounts with a last vote slot that is greater
235 : than the current slot. */
236 0 : continue;
237 0 : }
238 :
239 : /* Don't count vote accounts that haven't voted in the past 432k
240 : slots (length of an epoch).
241 : https://github.com/anza-xyz/agave/blob/v3.0.0/runtime/src/bank.rs#L2446-L2447 */
242 111 : if( FD_UNLIKELY( slot_delta>epoch_schedule->slots_per_epoch ) ) {
243 0 : continue;
244 0 : }
245 :
246 : /* Calculate the timestamp estimate by taking the last vote
247 : timestamp and adding the estimated time since the last vote
248 : (delta from last vote slot to current slot * slot duration).
249 : https://github.com/anza-xyz/agave/blob/v2.3.7/runtime/src/stake_weighted_timestamp.rs#L44-L45 */
250 111 : ulong offset = fd_ulong_sat_mul( slot_duration, slot_delta );
251 111 : long estimate = fd_long_sat_add( last_vote_timestamp, (long)(offset / NS_IN_S) );
252 :
253 : /* For each timestamp, accumulate the stake from E-2. If the entry
254 : for the timestamp doesn't exist yet, insert it. Otherwise,
255 : update the existing entry.
256 : https://github.com/anza-xyz/agave/blob/v2.3.7/runtime/src/stake_weighted_timestamp.rs#L46-L53 */
257 111 : ts_eles[ ts_ele_cnt ] = (ts_est_ele_t){
258 111 : .timestamp = estimate,
259 111 : .stake = { .ud=stake_t_2 },
260 111 : };
261 111 : ts_ele_cnt++;
262 :
263 : /* https://github.com/anza-xyz/agave/blob/v2.3.7/runtime/src/stake_weighted_timestamp.rs#L54 */
264 111 : total_stake += stake_t_2;
265 111 : }
266 :
267 48 : *total_stake_out = total_stake;
268 48 : *ts_ele_cnt_out = ts_ele_cnt;
269 48 : }
270 :
271 : /* get_timestamp_estimate calculates a timestamp estimate. Does not
272 : modify the slot context. Walks all cached vote accounts (from the
273 : "bank") and calculates a unix timestamp estimate. Returns the
274 : timestamp estimate. spad is used for scratch allocations (allocates
275 : a treap of size FD_SYSVAR_CLOCK_STAKE_WEIGHTS_MAX). Crashes the
276 : process with FD_LOG_ERR on failure (e.g. too many vote accounts).
277 :
278 : https://github.com/anza-xyz/agave/blob/v2.3.7/runtime/src/bank.rs#L2563-L2601 */
279 : static long
280 : get_timestamp_estimate( fd_bank_t * bank,
281 : fd_accdb_t * accdb,
282 : fd_sol_sysvar_clock_t * clock,
283 : fd_runtime_stack_t * runtime_stack,
284 : ulong const * parent_epoch,
285 3792 : int * out_estimate_present ) {
286 3792 : fd_epoch_schedule_t const * epoch_schedule = &bank->f.epoch_schedule;
287 3792 : ulong slot_duration = bank->f.ns_per_slot.ul[0];
288 3792 : ulong current_slot = bank->f.slot;
289 :
290 3792 : ts_est_ele_t * ts_eles = runtime_stack->clock_ts.staked_ts;
291 :
292 : /* https://github.com/anza-xyz/agave/blob/v2.3.7/runtime/src/stake_weighted_timestamp.rs#L41 */
293 3792 : ulong ts_ele_cnt = 0UL;
294 3792 : uint128 total_stake = 0UL;
295 :
296 : /* A timestamp estimate is calculated at every slot using the most
297 : recent vote states of voting validators. This estimated is based on
298 : a stake weighted median using the stake as of the end of epoch E-2
299 : if we are currently in epoch E. We do not count vote accounts that
300 : have not voted in an epoch's worth of slots (432k). */
301 :
302 3792 : ulong curr_epoch = fd_slot_to_epoch( epoch_schedule, bank->f.slot, NULL );
303 3792 : ulong vat_epoch = fd_slot_to_epoch( epoch_schedule, bank->f.features.validator_admission_ticket, NULL );
304 :
305 3792 : if( curr_epoch>=vat_epoch+1UL ) {
306 48 : accum_vote_stakes_vat( bank, runtime_stack, &total_stake, &ts_ele_cnt );
307 3744 : } else {
308 3744 : accum_vote_stakes_no_vat( bank, accdb, runtime_stack, &total_stake, &ts_ele_cnt );
309 3744 : }
310 :
311 : /* https://github.com/anza-xyz/agave/blob/v2.3.7/runtime/src/stake_weighted_timestamp.rs#L56-L58 */
312 3792 : if( FD_UNLIKELY( total_stake==0UL ) ) {
313 195 : *out_estimate_present = 0;
314 195 : return 0L;
315 195 : }
316 :
317 3597 : sort_stake_ts_inplace( ts_eles, ts_ele_cnt );
318 :
319 : /* Populate estimate with the stake-weighted median timestamp.
320 : https://github.com/anza-xyz/agave/blob/v2.3.7/runtime/src/stake_weighted_timestamp.rs#L59-L68 */
321 3597 : uint128 stake_accumulator = 0;
322 3597 : long estimate = 0L;
323 3726 : for( ulong i=0UL; i<ts_ele_cnt; i++ ) {
324 3726 : stake_accumulator = fd_uint128_sat_add( stake_accumulator, ts_eles[i].stake.ud );
325 3726 : if( stake_accumulator>(total_stake/2UL) ) {
326 3597 : estimate = ts_eles[ i ].timestamp;
327 3597 : break;
328 3597 : }
329 3726 : }
330 :
331 : /* Bound estimate by `max_allowable_drift` since the start of the
332 : epoch.
333 : https://github.com/anza-xyz/agave/blob/v2.3.7/runtime/src/stake_weighted_timestamp.rs#L69-L99 */
334 3597 : ulong epoch_for_start_slot = parent_epoch ? *parent_epoch : curr_epoch;
335 3597 : ulong epoch_start_slot = fd_epoch_slot0( epoch_schedule, epoch_for_start_slot );
336 3597 : long epoch_start_timestamp = clock->epoch_start_timestamp;
337 :
338 : /* https://github.com/anza-xyz/agave/blob/v2.3.7/runtime/src/stake_weighted_timestamp.rs#L71-L72 */
339 3597 : ulong poh_estimate_offset = fd_ulong_sat_mul( slot_duration, fd_ulong_sat_sub( current_slot, epoch_start_slot ) );
340 :
341 : /* https://github.com/anza-xyz/agave/blob/v2.3.7/runtime/src/stake_weighted_timestamp.rs#L73-L77 */
342 3597 : ulong estimate_offset = fd_ulong_sat_mul( NS_IN_S, fd_ulong_sat_sub( (ulong)estimate, (ulong)epoch_start_timestamp ) );
343 :
344 : /* https://github.com/anza-xyz/agave/blob/v2.3.7/runtime/src/stake_weighted_timestamp.rs#L78-L81 */
345 3597 : ulong max_allowable_drift_fast = fd_ulong_sat_mul( poh_estimate_offset, MAX_ALLOWABLE_DRIFT_FAST_PERCENT ) / 100UL;
346 3597 : ulong max_allowable_drift_slow = fd_ulong_sat_mul( poh_estimate_offset, MAX_ALLOWABLE_DRIFT_SLOW_PERCENT ) / 100UL;
347 :
348 : /* https://github.com/anza-xyz/agave/blob/v2.3.7/runtime/src/stake_weighted_timestamp.rs#L82-L98 */
349 3597 : if( estimate_offset>poh_estimate_offset && fd_ulong_sat_sub( estimate_offset, poh_estimate_offset )>max_allowable_drift_slow ) {
350 45 : estimate = fd_long_sat_add(
351 45 : epoch_start_timestamp,
352 45 : fd_long_sat_add( (long)poh_estimate_offset / NS_IN_S, (long)max_allowable_drift_slow / NS_IN_S ) );
353 3552 : } else if( estimate_offset<poh_estimate_offset && fd_ulong_sat_sub( poh_estimate_offset, estimate_offset )>max_allowable_drift_fast ) {
354 33 : estimate = fd_long_sat_sub(
355 33 : fd_long_sat_add( epoch_start_timestamp, (long)poh_estimate_offset / NS_IN_S ),
356 33 : (long)max_allowable_drift_fast / NS_IN_S );
357 33 : }
358 :
359 3597 : *out_estimate_present = 1;
360 3597 : return estimate;
361 3792 : }
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_t * accdb,
369 : fd_capture_ctx_t * capture_ctx,
370 : fd_runtime_stack_t * runtime_stack,
371 3792 : ulong const * parent_epoch ) {
372 3792 : fd_sol_sysvar_clock_t clock_[1];
373 3792 : fd_sol_sysvar_clock_t * clock = fd_sysvar_clock_read( accdb, bank->accdb_fork_id, clock_ );
374 3792 : if( FD_UNLIKELY( !clock ) ) FD_LOG_ERR(( "fd_sysvar_clock_read failed" ));
375 :
376 3792 : fd_epoch_schedule_t const * epoch_schedule = &bank->f.epoch_schedule;
377 3792 : ulong current_slot = bank->f.slot;
378 3792 : ulong current_epoch = fd_slot_to_epoch( epoch_schedule, current_slot, NULL );
379 :
380 : /* https://github.com/anza-xyz/agave/blob/v2.3.7/runtime/src/bank.rs#L2159 */
381 3792 : long unix_timestamp = clock->unix_timestamp;
382 :
383 : /* https://github.com/anza-xyz/agave/blob/v2.3.7/runtime/src/bank.rs#L2175 */
384 3792 : long ancestor_timestamp = clock->unix_timestamp;
385 :
386 : /* TODO: Are we handling slot 0 correctly?
387 : https://github.com/anza-xyz/agave/blob/v2.3.7/runtime/src/bank.rs#L2176-L2183 */
388 3792 : int estimate_present = 0;
389 3792 : long timestamp_estimate = get_timestamp_estimate( bank, accdb, clock, runtime_stack, parent_epoch, &estimate_present );
390 :
391 : /* If the timestamp was successfully calculated, use it. Otherwise,
392 : keep the old one. */
393 3792 : if( FD_LIKELY( estimate_present ) ) {
394 3597 : unix_timestamp = timestamp_estimate;
395 :
396 : /* https://github.com/anza-xyz/agave/blob/v2.3.7/runtime/src/bank.rs#L2180-L2182 */
397 3597 : if( timestamp_estimate<ancestor_timestamp ) {
398 6 : unix_timestamp = ancestor_timestamp;
399 6 : }
400 3597 : }
401 :
402 : /* https://github.com/anza-xyz/agave/blob/v2.3.7/runtime/src/bank.rs#L2191-L2197 */
403 3792 : long epoch_start_timestamp = (parent_epoch!=NULL && *parent_epoch!=current_epoch) ?
404 195 : unix_timestamp :
405 3792 : clock->epoch_start_timestamp;
406 :
407 : /* https://github.com/anza-xyz/agave/blob/v2.3.7/runtime/src/bank.rs#L2198-L2201 */
408 3792 : if( FD_UNLIKELY( current_slot==0UL ) ) {
409 0 : long timestamp_from_genesis = unix_timestamp_from_genesis( bank );
410 0 : unix_timestamp = timestamp_from_genesis;
411 0 : epoch_start_timestamp = timestamp_from_genesis;
412 0 : }
413 :
414 : /* https://github.com/anza-xyz/agave/blob/v2.3.7/runtime/src/bank.rs#L2202-L2208 */
415 3792 : *clock = (fd_sol_sysvar_clock_t){
416 3792 : .slot = current_slot,
417 3792 : .epoch_start_timestamp = epoch_start_timestamp,
418 3792 : .epoch = current_epoch,
419 3792 : .leader_schedule_epoch = fd_slot_to_leader_schedule_epoch( epoch_schedule, current_slot ),
420 3792 : .unix_timestamp = unix_timestamp,
421 3792 : };
422 :
423 : /* https://github.com/anza-xyz/agave/blob/v2.3.7/runtime/src/bank.rs#L2209-L2214 */
424 3792 : fd_sysvar_clock_write( bank, accdb, capture_ctx, clock );
425 3792 : }
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