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: 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: 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>
The prestate tracer did not report accounts that existed at a given address prior to a contract being created at that address.
Signed-off-by: Delweng <delweng@gmail.com>
Co-authored-by: Sina Mahmoodi <itz.s1na@gmail.com>
In some cases, inner contract creation may not be successful, and an inner contract was not created. This PR fixes a crash that could occur when doing tracing in such situations.
Backwards compatibility warning: The result will from now on omit empty fields instead
of including a zero value (e.g. no more `balance: '0x'`).
The prestateTracer will now take an option `diffMode: bool`. In this mode
the tracer will output the pre state and post data for the modified parts of state.
Read-only accesses will be completely omitted. Creations (be it account or slot)
will be signified by omission in the `pre` list and inclusion in `post`. Whereas
deletion (be it account or slot) will be signified by inclusion in `pre` and omission
in `post` list.
Signed-off-by: Delweng <delweng@gmail.com>
The call tracer and prestate tracer store data JSON-encoded in memory. In order to support alternative encodings (specifically RLP), it's better to keep data a native format during tracing. This PR does marshalling at the end, using gencodec.
OBS!
This PR changes the call tracer result slightly:
- Order of type and value fields are changed (should not matter).
- Output fields are completely omitted when they're empty (no more output: "0x"). Previously, this was only _sometimes_ omitted (e.g. when call ended in a non-revert error) and otherwise 0x when the output was actually empty.
This PR allows users to pass in a config object directly to the tracers. Previously only the struct logger was configurable.
It also adds an option to the call tracer which if enabled makes it ignore any subcall and collect only information about the top-level call. See #25419 for discussion.
The tracers will silently ignore if they are passed a config they don't care about.
* 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
* eth/tracers: add initial native prestate tracer
* fix balance hex
* handle prestate for tx from and to
* drop created contract from prestate
* fix sender balance
* use switch instead
Co-authored-by: Martin Holst Swende <martin@swende.se>
* minor fix
* lookup create2 account
* mv code around a bit
* check stackLen for create2
* fix transfer tx for js prestate tracer
* fix create2 addr
* track extcodehash in js prestate tracer
Co-authored-by: Martin Holst Swende <martin@swende.se>
jwasinger
Martin Holst Swende
Sina Mahmoodi
Delweng