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runtime: constrain ticks_per_slot in block harness #7374

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runtime: constrain ticks_per_slot in block harness #7374

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26 changes: 22 additions & 4 deletions src/flamenco/rewards/fd_rewards.c
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Original file line number Diff line number Diff line change
Expand Up @@ -17,9 +17,7 @@
/* https://github.com/anza-xyz/agave/blob/7117ed9653ce19e8b2dea108eff1f3eb6a3378a7/sdk/src/inflation.rs#L85 */
static double
total( fd_inflation_t const * inflation, double year ) {
if ( FD_UNLIKELY( year == 0.0 ) ) {
FD_LOG_ERR(( "inflation year 0" ));
}
if( FD_UNLIKELY( year < DBL_EPSILON ) ) FD_LOG_ERR(( "invalid inflation year parameter (corrupt genesis config?)" ));
double tapered = inflation->initial * pow( (1.0 - inflation->taper), year );
return (tapered > inflation->terminal) ? tapered : inflation->terminal;
}
Expand Down Expand Up @@ -88,6 +86,11 @@ static double
slot_in_year_for_inflation( fd_bank_t const * bank ) {
fd_epoch_schedule_t const * epoch_schedule = fd_bank_epoch_schedule_query( bank );
ulong num_slots = get_inflation_num_slots( bank, epoch_schedule, fd_bank_slot_get( bank ) );
FD_LOG_DEBUG(( "slot_in_year_for_inflation:"
" num_slots=%lu"
" slots_per_year=%g",
num_slots,
fd_bank_slots_per_year_get( bank ) ));
return (double)num_slots / (double)fd_bank_slots_per_year_get( bank );
}

Expand Down Expand Up @@ -441,7 +444,17 @@ calculate_previous_epoch_inflation_rewards( fd_bank_t const *
rewards->foundation_rate = foundation( fd_bank_inflation_query( bank ), slot_in_year );
rewards->prev_epoch_duration_in_years = epoch_duration_in_years( bank, prev_epoch );
rewards->validator_rewards = (ulong)(rewards->validator_rate * (double)prev_epoch_capitalization * rewards->prev_epoch_duration_in_years);
FD_LOG_DEBUG(( "Rewards %lu, Rate %.16f, Duration %.18f Capitalization %lu Slot in year %.16f", rewards->validator_rewards, rewards->validator_rate, rewards->prev_epoch_duration_in_years, prev_epoch_capitalization, slot_in_year ));
FD_LOG_DEBUG(( "calculate_previous_epoch_inflation_rewards:"
" slot_in_year=%g"
" valdiator_rewards=%lu"
" validator_rate=%g"
" prev_epoch_duration_in_years=%g"
" prev_epoch_capitalization=%lu",
slot_in_year,
rewards->validator_rewards,
rewards->validator_rate,
rewards->prev_epoch_duration_in_years,
prev_epoch_capitalization ));
}

/* https://github.com/anza-xyz/agave/blob/cbc8320d35358da14d79ebcada4dfb6756ffac79/programs/stake/src/lib.rs#L29 */
Expand Down Expand Up @@ -998,6 +1011,11 @@ fd_distribute_partitioned_epoch_rewards( fd_bank_t * bank,
ulong distribution_starting_block_height = epoch_rewards->starting_block_height;
ulong distribution_end_exclusive = fd_epoch_rewards_get_exclusive_ending_block_height( epoch_rewards );

if( block_height < distribution_starting_block_height ) {
fd_bank_epoch_rewards_end_locking_query( bank );
return;
}

fd_epoch_schedule_t const * epoch_schedule = fd_bank_epoch_schedule_query( bank );
ulong epoch = fd_bank_epoch_get( bank );

Expand Down
17 changes: 16 additions & 1 deletion src/flamenco/runtime/tests/fd_block_harness.c
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Original file line number Diff line number Diff line change
Expand Up @@ -238,6 +238,13 @@ fd_solfuzz_pb_block_ctx_destroy( fd_solfuzz_runner_t * runner ) {
fd_progcache_clear( runner->progcache_admin );
}

static double
years_as_slots( double years,
ulong tick_duration_ns,
ulong ticks_per_slot ) {
return years * SECONDS_PER_YEAR * (1e9 / (double)tick_duration_ns) / (double)ticks_per_slot;
}

/* Sets up block execution context from an input test case to execute
against the runtime. Returns block_info on success and NULL on
failure. */
Expand Down Expand Up @@ -296,7 +303,15 @@ fd_solfuzz_pb_block_ctx_create( fd_solfuzz_runner_t * runner,

fd_bank_genesis_creation_time_set( bank, test_ctx->epoch_ctx.genesis_creation_time );

fd_bank_slots_per_year_set( bank, test_ctx->epoch_ctx.slots_per_year );
double slots_per_year = years_as_slots( 1.0, 6250000, test_ctx->epoch_ctx.ticks_per_slot );
if( FD_UNLIKELY( test_ctx->epoch_ctx.ticks_per_slot < 1 ||
test_ctx->epoch_ctx.ticks_per_slot > 1000 ||
slots_per_year<1000. ||
slots_per_year>10e9 ) ) {
FD_LOG_ERR(( "invalid ticks_per_slot value: %lu", test_ctx->epoch_ctx.ticks_per_slot ));
}

fd_bank_slots_per_year_set( bank, slots_per_year );

fd_bank_parent_signature_cnt_set( bank, test_ctx->slot_ctx.parent_signature_count );

Expand Down
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