remove syscall tick height (#4891)

programs/bpf/tests/programs.rs

@@ -82,7 +82,6 @@ mod bpf {
         use solana_sdk::hash;
         use solana_sdk::instruction::{AccountMeta, Instruction};
         use solana_sdk::signature::{Keypair, KeypairUtil};
-        use solana_sdk::syscall::tick_height;
         use std::io::Read;
 
         #[test]
@@ -97,7 +96,6 @@ mod bpf {
                 // ("solana_bpf_rust_many_args", true),  // Issue #3099
                 ("solana_bpf_rust_noop", true),
                 ("solana_bpf_rust_panic", false),
-                ("solana_bpf_rust_tick_height", true),
             ];
             for program in programs.iter() {
                 let filename = create_bpf_path(program.0);
@@ -123,7 +121,6 @@ mod bpf {
                 let account_metas = vec![
                     AccountMeta::new(mint_keypair.pubkey(), true),
                     AccountMeta::new(Keypair::new().pubkey(), false),
-                    AccountMeta::new(tick_height::id(), false),
                 ];
                 let instruction = Instruction::new(program_id, &1u8, account_metas);
                 let result = bank_client.send_instruction(&mint_keypair, instruction);

runtime/src/bank.rs

@@ -36,7 +36,6 @@ use solana_sdk::signature::{Keypair, Signature};
 use solana_sdk::syscall::{
     current, fees, rewards,
     slot_hashes::{self, SlotHashes},
-    tick_height,
 };
 use solana_sdk::system_transaction;
 use solana_sdk::timing::{duration_as_ns, MAX_RECENT_BLOCKHASHES};
@@ -434,13 +433,6 @@ impl Bank {
         self.store_account(&fees::id(), &fees::create_account(1, &self.fee_calculator));
     }
 
-    fn update_tick_height(&self) {
-        self.store_account(
-            &tick_height::id(),
-            &tick_height::create_account(1, self.tick_height()),
-        );
-    }
-
     // update reward for previous epoch
     fn update_rewards(&mut self, epoch: u64) {
         if epoch == self.epoch() {
@@ -732,8 +724,6 @@ impl Bank {
         };
         inc_new_counter_debug!("bank-register_tick-registered", 1);
 
-        self.update_tick_height();
-
         // Register a new block hash if at the last tick in the slot
         if current_tick_height % self.ticks_per_slot == self.ticks_per_slot - 1 {
             self.blockhash_queue
@@ -1444,7 +1434,7 @@ mod tests {
     use solana_sdk::instruction::InstructionError;
     use solana_sdk::poh_config::PohConfig;
     use solana_sdk::signature::{Keypair, KeypairUtil};
-    use solana_sdk::syscall::{fees::Fees, rewards::Rewards, tick_height::TickHeight};
+    use solana_sdk::syscall::{fees::Fees, rewards::Rewards};
     use solana_sdk::system_instruction;
     use solana_sdk::system_transaction;
     use solana_sdk::timing::DEFAULT_TICKS_PER_SLOT;
@@ -2640,21 +2630,6 @@ mod tests {
         assert_eq!(fees.fee_calculator.lamports_per_signature, 12345);
     }
 
-    #[test]
-    fn test_bank_tick_height_account() {
-        let (genesis_block, _) = create_genesis_block(1);
-        let bank = Bank::new(&genesis_block);
-
-        for i in 0..10 {
-            bank.register_tick(&hash::hash(format!("hashing {}", i).as_bytes()));
-        }
-
-        let tick_account = bank.get_account(&tick_height::id()).unwrap();
-        let tick_height = TickHeight::from(&tick_account).unwrap().0;
-        assert_eq!(bank.tick_height(), tick_height);
-        assert_eq!(tick_height, 10);
-    }
-
     #[test]
     fn test_is_delta_with_no_committables() {
         let (genesis_block, mint_keypair) = create_genesis_block(8000);

sdk/src/syscall/mod.rs

@@ -6,13 +6,9 @@ pub mod current;
 pub mod fees;
 pub mod rewards;
 pub mod slot_hashes;
-pub mod tick_height;
 
 pub fn is_syscall_id(id: &Pubkey) -> bool {
-    current::check_id(id)
-        || fees::check_id(id)
-        || slot_hashes::check_id(id)
-        || tick_height::check_id(id)
+    current::check_id(id) || fees::check_id(id) || slot_hashes::check_id(id)
 }
 
 /// "Sysca11111111111111111111111111111111111111"

sdk/src/syscall/tick_height.rs

@@ -1,47 +0,0 @@
-//! This account contains the current cluster tick height
-//!
-use crate::account::Account;
-use crate::syscall;
-use bincode::serialized_size;
-
-/// "Sysca11TickHeight11111111111111111111111111"
-///  tick_height account pubkey
-const ID: [u8; 32] = [
-    6, 167, 211, 138, 69, 219, 242, 63, 162, 206, 168, 232, 212, 90, 152, 107, 220, 251, 113, 215,
-    208, 229, 34, 163, 11, 168, 45, 109, 60, 0, 0, 0,
-];
-
-crate::solana_name_id!(ID, "Sysca11TickHeight11111111111111111111111111");
-
-#[repr(C)]
-#[derive(Serialize, Deserialize, Debug, Default)]
-pub struct TickHeight(pub u64);
-
-impl TickHeight {
-    pub fn from(account: &Account) -> Option<Self> {
-        account.deserialize_data().ok()
-    }
-    pub fn to(&self, account: &mut Account) -> Option<()> {
-        account.serialize_data(self).ok()
-    }
-
-    pub fn size_of() -> usize {
-        serialized_size(&TickHeight::default()).unwrap() as usize
-    }
-}
-
-pub fn create_account(lamports: u64, tick_height: u64) -> Account {
-    Account::new_data(lamports, &TickHeight(tick_height), &syscall::id()).unwrap()
-}
-
-#[cfg(test)]
-mod tests {
-    use super::*;
-
-    #[test]
-    fn test_tick_height_create_account() {
-        let account = create_account(1, 1);
-        let tick_height = TickHeight::from(&account).unwrap();
-        assert_eq!(tick_height.0, 1);
-    }
-}