Commit graph

726 commits

Author SHA1 Message Date
Roman Khimov
19ad31dc52 vm: optimize IsSignatureContract
We use it a lot in (*Blockchain).IsTxStillRelevant().

name                   old time/op    new time/op    delta
IsSignatureContract-8    19.1ns ± 5%     1.2ns ± 4%  -93.81%  (p=0.000 n=10+10)

name                   old alloc/op   new alloc/op   delta
IsSignatureContract-8     0.00B          0.00B          ~     (all equal)

name                   old allocs/op  new allocs/op  delta
IsSignatureContract-8      0.00           0.00          ~     (all equal)
2022-06-07 10:29:13 +03:00
Roman Khimov
92c94f265c interop/vm: make VM reusable and use on VM for all in-block execs
Avoid allocating again and again. Increases TPS by about 3%.
2022-06-07 10:05:47 +03:00
Roman Khimov
edb6ca8926
Merge pull request #2531 from nspcc-dev/perf
Minor performance improvements
2022-06-03 10:40:56 +03:00
Roman Khimov
c3d989ebda stackitem: reusable serialization context
We serialize items a lot and this allows to avoid a number of allocations.
2022-06-02 15:38:39 +03:00
Roman Khimov
3d4076ca36 vm: microoptimize new estack creation
Subslice won't reach element -1, but it can reuse the same buffer space more
effectively.
2022-05-31 18:53:05 +03:00
Roman Khimov
e1607e23c2
Merge pull request #2525 from nspcc-dev/immutable-items
vm: implement immutable stackitems
2022-05-31 10:36:56 +03:00
Anna Shaleva
42a051e55a core: DeepCopy notifiction event args inside System.Runtime.Notify 2022-05-31 08:07:53 +03:00
Anna Shaleva
7296f0c913 vm: support immutable compound types 2022-05-31 08:07:50 +03:00
Anna Shaleva
107f5e0793 vm: adjust refcount operations order
Perform add/set/remove operations with VM type firstly, and with
refcounter after that. It is needed to be able to extend add/set/remove
operations with extra checks.
2022-05-31 08:02:13 +03:00
Roman Khimov
502cdd68ab
Merge pull request #2508 from nspcc-dev/snapshot-isolation
core, vm: implement snapshot isolation
2022-05-27 12:44:06 +03:00
Anna Shaleva
a79c80cb8d vm: wrap cross-contract exceptions 2022-05-26 11:44:26 +03:00
Anna Shaleva
a39b7cc3fd core, vm: move all isolation-related logic out of VM
Keep it inside the interop context.
2022-05-26 09:26:31 +03:00
Anna Shaleva
f79f62dab4 vm: use single function instead of committer/discarder 2022-05-26 09:26:31 +03:00
Anna Shaleva
08b68e9b82 vm, core: push Null return value only if no exception occurs
Close https://github.com/nspcc-dev/neo-go/issues/2509.
2022-05-26 09:26:31 +03:00
Anna Shaleva
ce226f6b76 vm: optimize context wrapping code
We can omit DAO wrapping for safe methods and for those methods that are not
wrapped into try-catch block. However, we still need to persist
notificationsCount changes for these methods to the parent context.
2022-05-26 09:26:31 +03:00
Anna Shaleva
0cd19f550e core, vm: implement snapshot isolation
Initial implementation without optimisations, but it should work.
2022-05-26 09:26:25 +03:00
Anna Shaleva
a3285eae04 vm: stringify InteropInterface stackitem type as InteropInterface 2022-05-25 13:20:21 +03:00
Roman Khimov
ae2395f55f vm: simplify (slot).Set code
Refcounter handles nil items just fine.
2022-05-17 16:26:22 +03:00
Roman Khimov
f2f66ad36e vm: clear static slot refs on exit, fix #2501 2022-05-17 16:26:22 +03:00
Roman Khimov
0d93b353e6 vm: count initial Null slot variables as well
Match C# behavior. Thanks to @ixje for finding this.
2022-05-16 17:42:57 +03:00
Roman Khimov
18d627e7f7 vm: count map key in the refcounter as well
Thanks @ixje for spotting this.
2022-05-16 16:07:25 +03:00
Anna Shaleva
e66e82278c vm: upgrade submodule 2022-05-12 14:25:14 +03:00
Anna Shaleva
a94ccf9236 vm: add MODMUL and MODPOW opcodes
Close #2470.
2022-05-12 14:25:14 +03:00
Roman Khimov
c6f8c33e66
Merge pull request #2478 from nspcc-dev/mainnet-fixes
Mainnet fixes
2022-05-12 10:04:53 +03:00
Roman Khimov
621db8c832 stackitem: allow to unJSONize big numbers (>int64), fix #2477
100000000000000000000 overflows int64 and NeoGo returns some garbage to
contracts instead of a proper number.
2022-05-11 21:03:10 +03:00
Anna Shaleva
3be37e8c5b vm: check instruction offset is valid before subsequent IP move
Reference implementation:
e167f03e25/src/neo-vm/ExecutionContext.cs (L77).

Turns out that exception-related code (try\finally handling) is the only
place where next instruction pointer bounds are not pre-checked before
assignment. This statement is true for both go and C# implementations.
However, C# code has duplicate check located inside the
InstructionPointer setter for all instructions except the
exception-related ones. Neo-go code doesn't perform this duplicate check.
Thus, C# VM FAULTs execution in case of invalid TRY/FINALLY offsets, and
neo-go VM does not.

This commit reverts a part of
https://github.com/nspcc-dev/neo-go/pull/2396. This bug is discovered
thanks to test added in https://github.com/neo-project/neo-vm/pull/453.
2022-05-11 14:04:02 +03:00
Anna Shaleva
8af043520d vm: adjust MaxByteArrayComparableSize value
https://github.com/neo-project/neo-vm/pull/454#discussion_r857533800.
2022-05-07 12:56:09 +03:00
Anna Shaleva
23b78b0be2 vm: limit ByteArray comparable length
Close #2460.
2022-05-07 12:56:04 +03:00
Elizaveta Chichindaeva
28908aa3cf [#2442] English Check
Signed-off-by: Elizaveta Chichindaeva <elizaveta@nspcc.ru>
2022-05-04 19:48:27 +03:00
Roman Khimov
bf3415e2bc emit: introduce CheckSig function
Which allows to create verification scripts without keys.PublicKey which is
convenient in some cases where we already have serialized key and don't want
to waste time decompressing it.
2022-04-27 22:57:10 +03:00
Anna Shaleva
2972569a0a vm: make byte representation of VMState compatible with C# 2022-04-04 13:52:29 +03:00
Roman Khimov
ad1dd3ebb7
Merge pull request #2399 from nspcc-dev/fuzz-tests
vm: add some Fuzz tests
2022-03-21 12:00:55 +03:00
Evgeniy Stratonikov
3f65473f64 vm: add some Fuzz tests
Both `IsScriptCorrect` and `VM.Run` should never panic.

Signed-off-by: Evgeniy Stratonikov <evgeniy@nspcc.ru>
2022-03-18 16:13:39 +03:00
Roman Khimov
906d99571b
Merge pull request #2369 from nspcc-dev/goshechka
*: go 1.18 support 🎉😍🎊🍰🥂
2022-03-18 15:07:20 +03:00
Roman Khimov
c2845852ae
Merge pull request #2397 from nspcc-dev/is-script-correct-panic
vm: avoid panic in `IsScriptCorrect`
2022-03-18 10:08:39 +03:00
Evgeniy Stratonikov
ef28308dbf vm: avoid panic in IsScriptCorrect
Signed-off-by: Evgeniy Stratonikov <evgeniy@nspcc.ru>
2022-03-17 20:12:50 +03:00
Anna Shaleva
2096ad6e81 *: remove io/ioutil uses
Close #1764.
2022-03-17 19:39:18 +03:00
Evgeniy Stratonikov
492c91b4c5 vm: disallow negative offset in (*Context).Next()
Currently the only known reason this can happen is processing
ENDFINALLY opcode before the corresponding ENDTRY.

Signed-off-by: Evgeniy Stratonikov <evgeniy@nspcc.ru>
2022-03-17 18:52:48 +03:00
Roman Khimov
5379ef75bb
Merge pull request #2391 from nspcc-dev/fix-reverse
vm: fix integer conversions
2022-03-10 12:27:10 +03:00
Evgeniy Stratonikov
32f4404954 vm: allow HASKEY on byte-arrays
Current neo-vm master has them https://github.com/neo-project/neo-vm/blob/master/src/neo-vm/ExecutionEngine.cs#L1157
Were silently added in
029466fa9d .

Signed-off-by: Evgeniy Stratonikov <evgeniy@nspcc.ru>
2022-03-10 10:34:13 +03:00
Evgeniy Stratonikov
39866b8512 vm: fix integer conversions
As can be seen in https://dotnetfiddle.net/s7eg21 (int) conversions
result in an exception in C# code.

Signed-off-by: Evgeniy Stratonikov <evgeniy@nspcc.ru>
2022-03-10 10:21:34 +03:00
Evgeniy Stratonikov
a8d2df874f stackitem: limit JSON size in ToJSONWithTypes
Also do not limit depth. It was introduced in e34fa2e915 as a simple
solution to OOM problem. In this commit we do exactly the refactoring
described there. Maximum size is the same as stack item size and
can be changed if needed withouth significat refactoring.
`1 MiB` seems sufficient, though.

Signed-off-by: Evgeniy Stratonikov <evgeniy@nspcc.ru>
2022-03-09 10:29:23 +03:00
AnnaShaleva
c35950206a vm: add test to check CLI UTF-8 compatibility 2022-02-18 19:20:50 +03:00
Anna Shaleva
c182141624 vm: fix linter issue
printf: `fmt.Fprintln` arg list ends with redundant newline (govet)
2022-02-18 19:20:43 +03:00
Anna Shaleva
2501ce3cb1 vm: adjust run description for VM CLI
With urfave/cli method name can be `help`.
2022-02-18 16:34:58 +03:00
Anna Shaleva
d04d55708c vm: setup autocompleter 2022-02-18 16:34:58 +03:00
Anna Shaleva
e8ec820d2e vm: add unload command
When execution fails it's the only way to change the prompt showing the
last executed instruction. Example:

```
NEO-GO-VM > loadgo examples/engine/engine.go
READY: loaded 117 instructions
NEO-GO-VM 0 > run
Error: at instruction 3 (SYSCALL): failed to invoke syscall 805851437: syscall not found
NEO-GO-VM 8 > parse
Error: missing argument
NEO-GO-VM 8 > parse 123
Integer to Hex			7b
Integer to Base64		ew==
String to Hex			313233
String to Base64		MTIz

NEO-GO-VM 8 > unload
NEO-GO-VM > exit

```
2022-02-18 16:34:58 +03:00
Anna Shaleva
563c3a4baa vm: replace ishell with urfave/cli
Use github.com/chzyer/readline for readline capabilities (including
history and ANSI escape sequences handling).
2022-02-18 16:34:50 +03:00
Roman Khimov
075fd05bfc
Merge pull request #2356 from nspcc-dev/rpc-big-numbers
Allow to use big integers in RPC
2022-02-11 13:24:35 +03:00
Evgeniy Stratonikov
c72b3f2176 vm/emit: check big integer size
Fix a bug where big integer could be emitted as 0 without reporting an
error. Also, add tests.

Signed-off-by: Evgeniy Stratonikov <evgeniy@nspcc.ru>
2022-02-11 12:48:55 +03:00