This library (in the version we inherited from Bitcoin Core 0.11.2) is
entirely focused on transparent script verification; a full Equihash
solver is out of scope. Now that Heartwood has activated, the canonical
Equihash validator is the Rust implementation in the equihash crate.
Based on bitcoin/bitcoin#13021 but implemented from scratch.
This introduces a cyclic dependency between `logging` and `util` that
should be cleaned up in a future PR.
The bug this was working around was fixed in Rust 1.44.0. We now pin
Rust 1.44.1, so we no longer need the workaround (and in fact, it is
necessary to make this change, as rustc no longer generates the old
filename).
leveldb's buildsystem causes us a few problems:
- breaks out-of-tree builds
- forces flags used for some tools
- limits cross builds
Rather than continuing to add wrappers around it, simply integrate it into our
build.
Refactor ProofVerifier
`ProofVerifier` was previously used to conditionally verify pre-Sapling Sprout
proofs (based on `ProofVerifier::Strict` or `ProofVerifier::Disabled` being
used), but hybrid Sprout proofs bypassed it (so were being verified multiple
times during block verification), and once `libsnark` was removed in
zcash/zcash#4060 `ProofVerifier::check` was doing nothing.
This PR refactors `ProofVerifier`, moving it out of the `libzcash` compilation
unit (so that it can depend on `primitives/transaction.h`), and moving Sprout
verification from `JSDescription::Verify` to `ProofVerifier::VerifySprout`.
Verification-skipping for Sprout proofs is re-introduced.
Additionally, the `ZCJoinSplit` global is removed from the codebase, and
`ZCJoinSplit::prove` is converted into a static function. We load the hybrid
Sprout parameters dynamically at proving time within the Rust code, and no
longer require a C++ global for any proving parameters.
As a side-effect, `libzcashconsensus.la` building with `--with-libs` is fixed,
as `primitives/transaction.cpp` no longer depends on `librustzcash.h`.
Add a pool for locked memory chunks, replacing LockedPageManager.
This is something I've been wanting to do for a long time. The current
approach of locking objects where they happen to be on the stack or heap
in-place causes a lot of mlock/munlock system call overhead, slowing
down any handling of keys.
Also locked memory is a limited resource on many operating systems (and
using a lot of it bogs down the system), so the previous approach of
locking every page that may contain any key information (but also other
information) is wasteful.
It needs to be closer to the root of our dependency tree, so that it can
depend on the transaction format. The libzcash compilation unit is
further from the dependency tree root than the transaction format.
Add funding streams to consensus parameters.
Add funding stream payments to coinbase txns generated by the miner.
* Reduce valueBalance for shielded outputs to funding streams.
* Ensure we produce binding signatures in any case where shielded
outputs go to either a funding stream or the miner.
The previous version of full_test_suite.py directly called the test
binary, which was being compiled at the same time as the static library.
However, by passing the --tests argument to cargo, rustc was ignoring
several important release-profile configurations, and was also
attempting to link the test binary, which was breaking cross-compilation
builds.
This commit alters src/Makefile.am to only build the static library, and
leaves test compilation to the test runner itself. This ensures that the
tests are only compiled for native builds, when the tests will be run on
the same platform.
Refactor experimental feature handling
Adds new rpc call `getexperimentalfeatures` and also adds experimental features to `getblockchaininfo` output.
Closes#2671.
This enables IDE integration to work (which requires the Cargo.toml to
be in the repo root).
"make clean" no longer runs "cargo clean", because IDE integrations hold
locks on files within the Rust build directory, and an error inside
"cargo clean" error would prevent "make clean" from completing (and
removing other files).
The --enable-online-rust configure flag replicates the behaviour of the
LIBRUSTZCASH_OVERRIDE environment variable (enabling the build system to
use crates.io instead of vendored dependencies).
Upstream PRs relating to strMiscWarning
This pulls in upstream PRs bitcoin/bitcoin#7114 and bitcoin/bitcoin#9236 (non-QT parts).
* Fixesbitcoin/bitcoin#6809 - run-of-the-mill exceptions should not get into `strMiscWarning` (which is reported by `getinfo`).
* Eliminate data races for `strMiscWarning` and `fLargeWork*Found`. This moves all access to these data structures through accessor functions and protects them with a lock.
Benchmarking framework, loosely based on google's micro-benchmarking
library (https://github.com/google/benchmark)
Wny not use the Google Benchmark framework? Because adding Even More Dependencies
isn't worth it. If we get a dozen or three benchmarks and need nanosecond-accurate
timings of threaded code then switching to the full-blown Google Benchmark library
should be considered.
The benchmark framework is hard-coded to run each benchmark for one wall-clock second,
and then spits out .csv-format timing information to stdout. It is left as an
exercise for later (or maybe never) to add command-line arguments to specify which
benchmark(s) to run, how long to run them for, how to format results, etc etc etc.
Again, see the Google Benchmark framework for where that might end up.
See src/bench/MilliSleep.cpp for a sanity-test benchmark that just benchmarks
'sleep 100 milliseconds.'
To compile and run benchmarks:
cd src; make bench
Sample output:
Benchmark,count,min,max,average
Sleep100ms,10,0.101854,0.105059,0.103881
Jack Grigg
Jorge Timón
Daira Hopwood
Wladimir J. van der Laan
fanquake
Homu
Cory Fields
Kris Nuttycombe
Pieter Wuille
Sean Bowe
NikVolf
Alfredo Garcia
Taylor Hornby
Gregory Maxwell
Dimitris Apostolou
Gavin Andresen