- Tweak linker script
Ensure that all read only sections end up in one segment, and
everything else in other segments. Discard .eh_frame, .hash and
.gnu.hash since they are unused.
- Don't create invalid string slices in stdout/stderr on Solana
- Report exceeded stack size as a warning if dynamic frames are off
- Native support for signed division in SBF
Adds BPF_SDIV, which is enabled only for the SBF subtarget.
- Introduce dynamic stack frames and the SBFv2 flag
Dynamic stack frames are currently opt-in and enabled setting
cpu=sbfv2. When sbfv2 is used, ELF files are flagged with
e_flags=EF_SBF_V2 so the runtime can detect it and react
accordingly.
* Add fallible send methods, and rpc_client helper
* Add helper to return RpcClient url
* Implement BenchTpsClient for TpuClient
* Add cli rpc and identity handling
* Handle different kinds of clients in main, use TpuClient
* Add tpu_client integration test
#### Problem
Currently, even if SOLANA_METRICS_ROCKSDB_PERF_SAMPLES_IN_1K == 0, we are still doing
the sampling check for every RocksDB read.
```
thread_rng().gen_range(0, METRIC_SAMPLES_1K) > *ROCKSDB_PERF_CONTEXT_SAMPLES_IN_1K
```
#### Summary of Changes
This PR skips the sampling check when SOLANA_METRICS_ROCKSDB_PERF_SAMPLES_IN_1K
is set to 0.
* Add BenchTpsClient
* Impl BenchTpsClient for used clients
* Use BenchTpsClient in do_bench
* Update integration test to use faucet via rpc
* Support keypairs from file that are not prefunded
* Remove old perf-utils
* Inline keyed_account_at_index() in all instructions of stake
which have more than one KeyedAccount parameter,
because these could cause a borrow collision.
* Uses transaction_context.get_key_of_account_at_index() in stake.
* Refactors stake::config::from to use BorrowedAccount instead of ReadableAccount.
* Replaces KeyedAccount by BorrowedAccount in stake.
