Breaking changes:
- The ChainConfig was exposed to tracers via VMContext passed in
`OnTxStart`. This is unnecessary specially looking through the lens of
live tracers as chain config remains the same throughout the lifetime of
the program. It was there so that native API-invoked tracers could
access it. So instead we moved it to the constructor of API tracers.
Non-breaking:
- Change the default config of the tracers to be `{}` instead of nil.
This way an extra nil check can be avoided.
Refactoring:
- Rename `supply` struct to `supplyTracer`.
- Un-export some hook definitions.
Co-authored-by: Sina M <1591639+s1na@users.noreply.github.com>
While looking at some mem profiles from `evm` runs, I noticed that
`goja` compilation of the bigint library was present. The bigint library
compilation happens in a package `init`, whenever the package
`eth/tracers/js` is loaded. This PR changes it to load lazily when
needed.
It becomes slightly faster with this change, and slightly less alloc:y.
Non-scientific benchmark with 100 executions:
```
time for i in {1..100}; do ./evm --code 6040 run; done;
```
current `master`:
```
real 0m6.634s
user 0m5.213s
sys 0m2.277s
```
Without compiling bigint
```
real 0m5.802s
user 0m4.191s
sys 0m1.965s
```
Co-authored-by: Martin HS <martin@swende.se>
Make tracers more robust by handling `nil` receipt as input.
Also pass in a receipt with gas used in the state test runner.
Closes https://github.com/ethereum/go-ethereum/issues/30117.
---------
Co-authored-by: Martin HS <martin@swende.se>
Co-authored-by: Sina Mahmoodi <itz.s1na@gmail.com>
Add coinbase address to javascript tracer context.
This PR adds the `coinbase` address to `jsTracer.ctx`, allowing access
to the coinbase address (fee receipient) in custom JavaScript tracers.
Example usage:
```javascript
result: function(ctx) {
return toAddress(ctx.coinbase);
}
```
This change enables custom tracers to access coinbase address,
previously unavailable, enhancing their capabilities to match built-in
tracers.
Co-authored-by: Dylan Vassallo <dylan.vassallo@hotmail.com>
Here we add a Go API for running tracing plugins within the main block import process.
As an advanced user of geth, you can now create a Go file in eth/tracers/live/, and within
that file register your custom tracer implementation. Then recompile geth and select your tracer
on the command line. Hooks defined in the tracer will run whenever a block is processed.
The hook system is defined in package core/tracing. It uses a struct with callbacks, instead of
requiring an interface, for several reasons:
- We plan to keep this API stable long-term. The core/tracing hook API does not depend on
on deep geth internals.
- There are a lot of hooks, and tracers will only need some of them. Using a struct allows you
to implement only the hooks you want to actually use.
All existing tracers in eth/tracers/native have been rewritten to use the new hook system.
This change breaks compatibility with the vm.EVMLogger interface that we used to have.
If you are a user of vm.EVMLogger, please migrate to core/tracing, and sorry for breaking
your stuff. But we just couldn't have both the old and new tracing APIs coexist in the EVM.
---------
Co-authored-by: Sina M <1591639+s1na@users.noreply.github.com>
Co-authored-by: Matthieu Vachon <matthieu.o.vachon@gmail.com>
Co-authored-by: Delweng <delweng@gmail.com>
Co-authored-by: Martin HS <martin@swende.se>
This change fixes two type-inconsistencies in the JS tracer:
- In most places we return byte arrays as a `Uint8Array` to the tracer. However it seems we missed doing the conversion for `ctx` fields which are passed to the tracer during `result`. They are passed as simple arrays. I think Uint8Arrays are more suitable and we should change this inconsistency. Note: this will be a breaking-change. But I believe the effect is small. If we look at our tracers we see that these fields (`ctx.from`, `ctx.to`, etc.) are used in 2 ways. Passed to `toHex` which takes both array or buffer. Or the length was measured which is the same for both types.
- The `slice` taking in `int, int` params versus `memory.slice` taking `int64, int64` params. I suggest changing `slice` types to `int64`. This should have no effect almost in any case.
Co-authored-by: Sina Mahmoodi <1591639+s1na@users.noreply.github.com>
This change fixes a bug in js tracer, where `ctx.GasPrice.toString(16)` returns a number string in base `10`.
Co-authored-by: Joe Netti <joe@netti.dev>
This includes a semantic change to the `callTracer` as well as `flatCallTracer`.
The value of field `gas` in the **first** call frame will change as follows:
- It previously contained gas available after initial deductions (i.e. tx costs)
- It will now contain the full tx gasLimit value
Signed-off-by: jsvisa <delweng@gmail.com>
Co-authored-by: Delweng <delweng@gmail.com>
This PR fixes OOM panic in the callTracer as well as panicing on
opcode validation errors (e.g. stack underflow) in callTracer and
prestateTracer.
Co-authored-by: jwasinger <j-wasinger@hotmail.com>
Co-authored-by: Martin Holst Swende <martin@swende.se>
This makes non-JS tracers execute all block txs on a single goroutine.
In the previous implementation, we used to prepare every tx pre-state
on one goroutine, and then run the transactions again with tracing enabled.
Native tracers are usually faster, so it is faster overall to use their output as
the pre-state for tracing the next transaction.
Co-authored-by: Martin Holst Swende <martin@swende.se>
Co-authored-by: Sina Mahmoodi <itz.s1na@gmail.com>
This removes the 'time' field from logs, as well as from the tracer interface. This change makes the trace output deterministic. If a tracer needs the time they can measure it themselves. No need for evm to do this.
Co-authored-by: Sina Mahmoodi <itz.s1na@gmail.com>
* eth/tracers: fix gasUsed in call tracer
* fix js tracers gasUsed
* fix legacy prestate tracer
* fix restGas in test
* drop intrinsicGas field from js tracers
Co-authored-by: Sina Mahmoodi <1591639+s1na@users.noreply.github.com>
* eth/tracers: add revertReason to callTracer
* update callframe gen json
* add revertal to calltrace test
Co-authored-by: Sina Mahmoodi <1591639+s1na@users.noreply.github.com>
* eth/tracers: pad memory slice on oob case
* eth/tracers/js: fix testfailure due to err msg capitalization
Co-authored-by: Sina Mahmoodi <1591639+s1na@users.noreply.github.com>
Co-authored-by: Martin Holst Swende <martin@swende.se>
All fields related to gas must be represented as uint64. Depth is
internally tracked as int, so it makes sense to also store it as int.
Co-authored-by: Felix Lange <fjl@twurst.com>
This changes the []byte <-> Uint8Array conversion to use an
ArrayBuffer, avoiding inefficient copying of the slice data in Goja.
Co-authored-by: Sina Mahmoodi <1591639+s1na@users.noreply.github.com>
Co-authored-by: Felix Lange <fjl@twurst.com>
* core,eth: add empty tx logger hooks
* core,eth: add initial and remaining gas to tx hooks
* store tx gasLimit in js tracer
* use gasLimit to compute intrinsic cost for js tracer
* re-use rules in transitiondb
* rm logs
* rm logs
* Mv some fields from Start to TxStart
* simplify sender lookup in prestate tracer
* mv env to TxStart
* Revert "mv env to TxStart"
This reverts commit 656939634b9aff19f55a1cd167345faf8b1ec310.
* Revert "simplify sender lookup in prestate tracer"
This reverts commit ab65bce48007cab99e68232e7aac2fe008338d50.
* Revert "Mv some fields from Start to TxStart"
This reverts commit aa50d3d9b2559addc80df966111ef5fb5d0c1b6b.
* fix intrinsic gas for prestate tracer
* add comments
* refactor
* fix test case
* simplify consumedGas calc in prestate tracer
Co-authored-by: Sina Mahmoodi <1591639+s1na@users.noreply.github.com>
* eth/tracers: Add support for REVERT in evmdis_tracer
* evm/tracers: Fix evmdis_tracer to use SELFDESTRUCT instead of SUICIDE
* eth/tracers: Regenerate tracer library
Co-authored-by: Alex Beregszaszi <alex@rtfs.hu>
