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753 commits

Author SHA1 Message Date
Anna Shaleva
0ceae612c6 vm: improve failed SYSCALL logging 
For better user experience.
 2022-11-28 17:16:27 +03:00
Roman Khimov
0039615ae3
Merge pull request #2816 from nspcc-dev/fix-pointer-serialization 
Fix pointer serialization
 2022-11-20 22:59:52 +07:00
Roman Khimov
9ba18b5dfa stackitem: serialize/deserialize pointers, fix #2815 
They of course can't be serialized, but in protected mode we still need to
handle them somehow.
 2022-11-20 16:02:50 +03:00
Roman Khimov
8e7f65be17 vm: use proper estack for exception handler 
v.estack might be some inner invoked contract and its stack must not be used
for exception handler set up by higher-order contract.
 2022-11-18 11:36:38 +03:00
Roman Khimov
cb64957af5 vm: don't use Stack for istack 
We don't use all of the Stack functionality for it, so drop useless methods
and avoid some interface conversions. It increases single-node TPS by about
0.9%, so nothing really important there, but not a bad change either. Maybe it
can be reworked again with generics though.
 2022-11-18 11:35:29 +03:00
Roman Khimov
aef01bf663 vm: fix istack marshaling, fix #2799 2022-11-16 00:40:12 +03:00
Roman Khimov
90582faacd vm: save current stack slice when loading new context 
v.estack is used throughout the code to work with estack, while ctx.sc.estack
is (theoretically) just a reference to it that is saved on script load and
restored to v.estack on context unload. The problem is that v.estack can grow
as we use it and can be reallocated away from its original slice (saved in the
ctx.sc.estack), so either ctx.sc.estack should be a pointer or we need to
ensure that it's correct when loading a new script. The second approach is a
bit safer for now and it fixes #2798.
 2022-11-15 23:48:02 +03:00
Roman Khimov
5d43367082 emit: optimize Bool GAS cost 
NOT is 1 byte shorter and 2048 times cheaper than CONVERT. Inspired by
neo-project/neo-vm#493.
 2022-10-25 13:08:33 +03:00
Anna Shaleva
7db9258104 vm: make LoadFileWithFlags actually load with flags provided 2022-10-13 16:07:34 +03:00
Anna Shaleva
7eb87afab8 cli: unify parameters parsing 
Share parameters parsing code between 'contract invokefunction' and
'vm run' commands. It allows VM CLI to parse more complicated parameter
types including arrays and file-backed bytestrings.
 2022-10-13 08:20:27 +03:00
Anna Shaleva
f45d8fc08d vm: remove default syscall handler 
It's not needed anymore. Close #1075.
 2022-10-07 15:56:34 +03:00
Anna Shaleva
0b717b0c22 vm: move vm CLI to cli/vm package 2022-10-07 15:56:34 +03:00
Anna Shaleva
df802b6fc6 vm: adjust emit.AppCall comment 
There's no APPCALL anymore.
 2022-09-21 17:25:45 +03:00
Roman Khimov
f78a065230 vm/cli: generate Go 1.17 go.mods 2022-09-08 21:18:51 +03:00
Roman Khimov
1e54b422cd emit: make *util.Uint160 and *util.Uint256 emittable 
They can be nil or can be regular uint types we're used to.
 2022-09-08 14:33:04 +03:00
Roman Khimov
4f3ffe7290 golangci: enable errorlint and fix everything it found 2022-09-02 18:36:23 +03:00
Evgeniy Stratonikov
9712be78fd vm: optimize refcounter 
```
name                    old time/op    new time/op    delta
RefCounter_Add-8          9.47ns ± 4%    2.75ns ± 1%   -70.92%  (p=0.000 n=10+9)
RefCounter_AddRemove-8    88.9ns ±20%     5.5ns ± 4%   -93.78%  (p=0.000 n=10+10)

name                    old alloc/op   new alloc/op   delta
RefCounter_Add-8           0.00B          0.00B           ~     (all equal)
RefCounter_AddRemove-8     48.0B ± 0%      0.0B       -100.00%  (p=0.000 n=10+10)

name                    old allocs/op  new allocs/op  delta
RefCounter_Add-8            0.00           0.00           ~     (all equal)
RefCounter_AddRemove-8      2.00 ± 0%      0.00       -100.00%  (p=0.000 n=10+10)
```

Signed-off-by: Evgeniy Stratonikov <evgeniy@nspcc.ru>
 2022-08-23 13:18:06 +03:00
Evgeniy Stratonikov
59fbc689e4 vm/bench: extend refcounter benchmarks 
Adding an array multiple times leads to the fast update via `IncRC`.
This hides the allocation that is there on the first addition. In this
commit add another benchmark which measures Add/Remove together, to
ensure that `switch` in `refCounter.Add` is entered. Benchmark results
are meaningful, because `Add`/`Remove` have almost identical implementation.

Signed-off-by: Evgeniy Stratonikov <evgeniy@nspcc.ru>
 2022-08-23 13:08:42 +03:00
Anna Shaleva
916f2293b8 *: apply go 1.19 formatter heuristics 
And make manual corrections where needed. See the "Common mistakes
and pitfalls" section of https://tip.golang.org/doc/comment.
 2022-08-09 15:37:52 +03:00
Anna Shaleva
bb751535d3 *: bump minimum supported go version 
Close #2497.
 2022-08-08 13:59:32 +03:00
Roman Khimov
e8d2277fe5 contract/vm: only push NULL after call in dynamic contexts 
And determine the need for Null dynamically. For some reason the only dynamic
context is Contract.Call. CALLT is not dynamic and neither is a call from
native contract, go figure...
 2022-08-05 14:35:00 +03:00
Roman Khimov
99e2681d3a interop/vm: use more robust CalledByEntry check 
Directly check contexts.
 2022-08-05 14:35:00 +03:00
Roman Khimov
13f5fdbe8a vm: extract shared parts of the Context 
Local calls reuse them, cross-contract calls create new ones. This allows to
avoid some allocations and use a little less memory.
 2022-08-05 14:26:25 +03:00
Roman Khimov
1e62474514 vm: move InvocationTree into a package of its own 
result.Invoke shouldn't depend on vm.
 2022-07-08 23:30:30 +03:00
Roman Khimov
fab8dfb9f8 vm: move State type into a package of its own 
It's used a lot in other places that need it, but don't need whole VM at the
same time.
 2022-07-08 18:34:52 +03:00
Roman Khimov
926b082d39
Merge pull request #2538 from nspcc-dev/restrict-out-of-bounds 
core: check methods offsets while contract deploying
 2022-07-04 12:54:32 +03:00
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
Anna Shaleva
1005c1f7db vm: forbid jumping out of the script bounds 2022-06-06 12:18:19 +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