Commit graph

11 commits

Author SHA1 Message Date
Roman Khimov
9a06995460 bigint: don't allocate in ToPreallocatedBytes
Turns out, it's almost always allocating because we're mostly dealing with
small integers while the buffer size is calculated in 8-byte chunks here, so
preallocated buffer is always insufficient.

name                   old time/op    new time/op    delta
ToPreallocatedBytes-8    28.5ns ± 7%    19.7ns ± 5%   -30.72%  (p=0.000 n=10+10)

name                   old alloc/op   new alloc/op   delta
ToPreallocatedBytes-8     16.0B ± 0%      0.0B       -100.00%  (p=0.000 n=10+10)

name                   old allocs/op  new allocs/op  delta
ToPreallocatedBytes-8      1.00 ± 0%      0.00       -100.00%  (p=0.000 n=10+10)

Fix StorageItem reuse at the same time. We don't copy when getting values from
the storage, but we don when we're putting them, so buffer reuse could corrupt
old values.
2022-06-02 15:38:39 +03:00
Roman Khimov
10110d4e70 bigint: correct MaxBytesLen
It can't be 33, positive signed int256 all fit into 32 bytes (no need for
leading zero), negative ones fit into 32 bytes as well.
2022-05-31 16:51:19 +03:00
Roman Khimov
3945e81857 bigint: don't allocate in ToPreallocatedBytes() for negative numbers
In-place modifications are somewhat dangerous, but yet another allocation is
quite costly.
2022-05-31 12:45:34 +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
418ba1dbc3 *: use internal variables for simple big.NewInt() values
Avoid additional allocations.
2021-12-01 21:36:25 +03:00
Roman Khimov
100e97d772 util: move ArrayReverse into package of its own
Leave just uint160 and uint256 types in util.
2021-07-19 22:57:55 +03:00
Evgeniy Stratonikov
9c5b4e5916 encoding/bigint: allow to convert unsigned integers
Signed-off-by: Evgeniy Stratonikov <evgeniy@nspcc.ru>
2021-07-15 15:58:49 +03:00
Roman Khimov
9d2712573f *: enable godot linter and fix all its warnings
It's important for NeoGo to have clean documentation. No functional changes.
2021-05-12 23:17:03 +03:00
Evgeniy Stratonikov
5a3fa47b95 encoding: panic on nil slice
After `state.StorageItem` became a slice of bytes
we no longer panic on accessing `si.Value`. This helps
to ensure that nothing was broken. Providing `nil` to `FromBytes`
is probably an error anyway.
2021-03-09 12:11:26 +03:00
Roman Khimov
ff11a5f990 state: use more efficient encoding for amount
It's variable-length anyway, so wasting 8 bytes for what typically is 1 byte
makes no sense.
2020-09-21 21:51:33 +03:00
Anna Shaleva
7ca2807875 vm/encoding: move bigint from vm to encoding package 2020-06-08 13:27:13 +03:00
Renamed from pkg/vm/emit/bigint.go (Browse further)