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627 commits

Author SHA1 Message Date
Roman Khimov
e09a0f3969 vm: don't allocate for break points in NewContext 
They're rarely used and when they're used they're appended to.
 2021-08-29 13:15:12 +03:00
Roman Khimov
734eef3290
Merge pull request #2147 from nspcc-dev/drop-go-1.14 
Drop Go 1.14, use 1.17
 2021-08-26 17:59:21 +03:00
Roman Khimov
6d074a96e9 *: make tests use TempDir(), fix #1319 
Simplify things, drop TempFile at the same time (refs. #1764)
 2021-08-26 17:29:40 +03:00
Roman Khimov
fd87cd4c54 vm: fix (*Stack).Clear to clean up references 2021-08-25 11:20:43 +03:00
Roman Khimov
930653418d vm: rework stack as a simple slice 
Double-linked list is quite expensive to manage especially given that it
requires microallocations for each Element. It can be replaced by simple slice
which is much more effective for simple push/pop operations that are very
typical in a VM. I've worried a little about more complex operations like
XDROP/1024 or REVERSEN/1024 because these require copying quite substantial
number of elements, but turns out these work fine too.

At the moment Element is kept as a convenient wrapper for Bytes/BigInt/Bool/etc
methods, but it can be changed in future. Many other potential optimizations
are also possible now.

Complex scripts:
name                    old time/op    new time/op    delta
ScriptFibonacci-8         1.11ms ± 2%    0.85ms ± 2%  -23.40%  (p=0.000 n=10+10)
ScriptNestedRefCount-8    1.46ms ± 2%    1.16ms ± 1%  -20.65%  (p=0.000 n=10+10)
ScriptPushPop/4-8         1.81µs ± 1%    1.54µs ± 4%  -14.96%  (p=0.000 n=8+10)
ScriptPushPop/16-8        4.88µs ± 2%    3.91µs ± 2%  -19.87%  (p=0.000 n=9+9)
ScriptPushPop/128-8       31.9µs ± 9%    26.7µs ± 3%  -16.28%  (p=0.000 n=9+8)
ScriptPushPop/1024-8       235µs ± 1%     192µs ± 3%  -18.31%  (p=0.000 n=9+10)

name                    old alloc/op   new alloc/op   delta
ScriptFibonacci-8          392kB ± 0%     123kB ± 0%  -68.68%  (p=0.000 n=8+8)
ScriptNestedRefCount-8     535kB ± 0%     266kB ± 0%  -50.38%  (p=0.000 n=6+10)
ScriptPushPop/4-8           352B ± 0%      160B ± 0%  -54.55%  (p=0.000 n=10+10)
ScriptPushPop/16-8        1.41kB ± 0%    0.64kB ± 0%  -54.55%  (p=0.000 n=10+10)
ScriptPushPop/128-8       11.3kB ± 0%     8.7kB ± 0%  -22.73%  (p=0.000 n=10+10)
ScriptPushPop/1024-8      90.1kB ± 0%    73.2kB ± 0%  -18.75%  (p=0.000 n=10+10)

name                    old allocs/op  new allocs/op  delta
ScriptFibonacci-8          9.14k ± 0%     3.53k ± 0%  -61.41%  (p=0.000 n=10+10)
ScriptNestedRefCount-8     17.4k ± 0%     11.8k ± 0%  -32.35%  (p=0.000 n=10+10)
ScriptPushPop/4-8           12.0 ± 0%       8.0 ± 0%  -33.33%  (p=0.000 n=10+10)
ScriptPushPop/16-8          48.0 ± 0%      32.0 ± 0%  -33.33%  (p=0.000 n=10+10)
ScriptPushPop/128-8          384 ± 0%       259 ± 0%  -32.55%  (p=0.000 n=10+10)
ScriptPushPop/1024-8       3.07k ± 0%     2.05k ± 0%  -33.14%  (p=0.000 n=10+10)

Some stack-management opcodes:

name                                 old time/op    new time/op    delta
Opcodes/XDROP/0/1-8                     255ns ± 9%     273ns ±11%    +6.92%  (p=0.016 n=11+10)
Opcodes/XDROP/0/1024-8                  362ns ± 2%     365ns ± 8%      ~     (p=0.849 n=10+11)
Opcodes/XDROP/1024/1024-8              3.20µs ± 2%    1.99µs ±12%   -37.69%  (p=0.000 n=11+11)
Opcodes/XDROP/2047/2048-8              6.55µs ± 3%    1.75µs ± 5%   -73.26%  (p=0.000 n=10+11)
Opcodes/DUP/null-8                      414ns ± 6%     245ns ±12%   -40.88%  (p=0.000 n=11+11)
Opcodes/DUP/boolean-8                   411ns ± 8%     245ns ± 6%   -40.31%  (p=0.000 n=11+11)
Opcodes/DUP/integer/small-8             684ns ± 8%     574ns ± 3%   -16.02%  (p=0.000 n=11+10)
Opcodes/DUP/integer/big-8               675ns ± 6%     601ns ±10%   -10.98%  (p=0.000 n=11+11)
Opcodes/DUP/bytearray/small-8           675ns ±10%     566ns ±10%   -16.22%  (p=0.000 n=11+11)
Opcodes/DUP/bytearray/big-8            6.39µs ±11%    6.13µs ± 3%      ~     (p=0.148 n=10+10)
Opcodes/DUP/buffer/small-8              412ns ± 5%     261ns ± 8%   -36.55%  (p=0.000 n=9+11)
Opcodes/DUP/buffer/big-8                586ns ±10%     337ns ± 7%   -42.53%  (p=0.000 n=11+11)
Opcodes/DUP/struct/small-8              458ns ±12%     256ns ±12%   -44.09%  (p=0.000 n=11+11)
Opcodes/DUP/struct/big-8                489ns ± 7%     274ns ± 5%   -44.06%  (p=0.000 n=10+10)
Opcodes/DUP/pointer-8                   586ns ± 7%     494ns ± 7%   -15.67%  (p=0.000 n=11+11)
Opcodes/OVER/null-8                     450ns ±14%     264ns ±10%   -41.30%  (p=0.000 n=11+11)
Opcodes/OVER/boolean-8                  450ns ±14%     264ns ±10%   -41.31%  (p=0.000 n=11+11)
Opcodes/OVER/integer/small-8            716ns ± 9%     604ns ± 6%   -15.65%  (p=0.000 n=11+11)
Opcodes/OVER/integer/big-8              696ns ± 5%     634ns ± 6%    -8.89%  (p=0.000 n=10+11)
Opcodes/OVER/bytearray/small-8          693ns ± 1%     539ns ± 9%   -22.18%  (p=0.000 n=9+10)
Opcodes/OVER/bytearray/big-8           6.33µs ± 2%    6.16µs ± 4%    -2.79%  (p=0.004 n=8+10)
Opcodes/OVER/buffer/small-8             415ns ± 4%     263ns ± 8%   -36.76%  (p=0.000 n=9+11)
Opcodes/OVER/buffer/big-8               587ns ± 5%     342ns ± 7%   -41.70%  (p=0.000 n=11+11)
Opcodes/OVER/struct/small-8             446ns ±14%     257ns ± 8%   -42.42%  (p=0.000 n=11+11)
Opcodes/OVER/struct/big-8               607ns ±26%     278ns ± 7%   -54.25%  (p=0.000 n=11+11)
Opcodes/OVER/pointer-8                  645ns ±12%     476ns ±10%   -26.21%  (p=0.000 n=11+11)
Opcodes/PICK/2/null-8                   460ns ±11%     264ns ± 9%   -42.68%  (p=0.000 n=11+11)
Opcodes/PICK/2/boolean-8                460ns ± 4%     260ns ± 4%   -43.37%  (p=0.000 n=8+11)
Opcodes/PICK/2/integer/small-8          725ns ± 7%     557ns ± 4%   -23.19%  (p=0.000 n=11+10)
Opcodes/PICK/2/integer/big-8            722ns ±12%     582ns ± 6%   -19.51%  (p=0.000 n=11+11)
Opcodes/PICK/2/bytearray/small-8        705ns ± 6%     545ns ± 4%   -22.69%  (p=0.000 n=11+11)
Opcodes/PICK/2/bytearray/big-8         7.17µs ±36%    6.37µs ± 8%      ~     (p=0.065 n=11+11)
Opcodes/PICK/2/buffer/small-8           427ns ± 8%     253ns ± 8%   -40.82%  (p=0.000 n=11+11)
Opcodes/PICK/2/buffer/big-8             590ns ± 3%     331ns ± 6%   -43.83%  (p=0.000 n=11+11)
Opcodes/PICK/2/struct/small-8           428ns ± 8%     254ns ± 7%   -40.64%  (p=0.000 n=11+11)
Opcodes/PICK/2/struct/big-8             489ns ±15%     283ns ± 7%   -42.11%  (p=0.000 n=11+11)
Opcodes/PICK/2/pointer-8                553ns ± 7%     414ns ± 8%   -25.18%  (p=0.000 n=11+11)
Opcodes/PICK/1024/null-8                531ns ± 4%     327ns ± 6%   -38.49%  (p=0.000 n=10+10)
Opcodes/PICK/1024/boolean-8             527ns ± 5%     318ns ± 5%   -39.78%  (p=0.000 n=11+9)
Opcodes/PICK/1024/integer/small-8       861ns ± 4%     683ns ± 4%   -20.66%  (p=0.000 n=11+11)
Opcodes/PICK/1024/integer/big-8         882ns ± 4%    1060ns ±47%      ~     (p=0.748 n=11+11)
Opcodes/PICK/1024/bytearray/small-8     850ns ± 4%     671ns ± 5%   -21.12%  (p=0.000 n=10+11)
Opcodes/PICK/1024/bytearray/big-8      6.32µs ±26%    6.75µs ± 4%    +6.86%  (p=0.019 n=10+11)
Opcodes/PICK/1024/buffer/small-8        530ns ± 6%     324ns ± 5%   -38.86%  (p=0.000 n=10+11)
Opcodes/PICK/1024/buffer/big-8          570ns ± 4%     417ns ±45%   -26.82%  (p=0.001 n=11+10)
Opcodes/PICK/1024/struct/small-8      1.11µs ±122%    0.34µs ±11%   -69.38%  (p=0.000 n=11+10)
Opcodes/PICK/1024/pointer-8             693ns ± 5%     568ns ±31%   -18.10%  (p=0.002 n=10+10)
Opcodes/TUCK/null-8                     450ns ±10%     275ns ± 8%   -38.93%  (p=0.000 n=11+11)
Opcodes/TUCK/boolean-8                  449ns ±13%     268ns ± 9%   -40.16%  (p=0.000 n=11+10)
Opcodes/TUCK/integer/small-8            716ns ± 7%     599ns ± 7%   -16.30%  (p=0.000 n=11+11)
Opcodes/TUCK/integer/big-8              718ns ± 8%     613ns ±11%   -14.55%  (p=0.000 n=11+11)
Opcodes/TUCK/bytearray/small-8          700ns ±12%     558ns ± 7%   -20.39%  (p=0.000 n=11+11)
Opcodes/TUCK/bytearray/big-8           5.88µs ± 7%    6.37µs ± 3%    +8.31%  (p=0.000 n=10+11)
Opcodes/TUCK/buffer/small-8             425ns ± 6%     258ns ±12%   -39.28%  (p=0.000 n=11+11)
Opcodes/TUCK/buffer/big-8               553ns ±19%     334ns ± 6%   -39.57%  (p=0.000 n=11+11)
Opcodes/TUCK/struct/small-8             474ns ± 3%     263ns ±12%   -44.51%  (p=0.000 n=10+11)
Opcodes/TUCK/struct/big-8               641ns ±24%     284ns ± 8%   -55.63%  (p=0.000 n=11+11)
Opcodes/TUCK/pointer-8                  635ns ±13%     468ns ±16%   -26.31%  (p=0.000 n=11+11)
Opcodes/SWAP/null-8                     227ns ±31%     212ns ±11%      ~     (p=0.847 n=11+11)
Opcodes/SWAP/integer-8                  233ns ±32%     210ns ±14%      ~     (p=0.072 n=10+11)
Opcodes/SWAP/big_bytes-8                263ns ±39%     211ns ±11%      ~     (p=0.056 n=11+11)
Opcodes/ROT/null-8                      308ns ±68%     223ns ±12%      ~     (p=0.519 n=11+11)
Opcodes/ROT/integer-8                   226ns ±25%     228ns ± 9%      ~     (p=0.705 n=10+11)
Opcodes/ROT/big_bytes-8                 215ns ±18%     218ns ± 7%      ~     (p=0.756 n=10+11)
Opcodes/ROLL/4/null-8                   269ns ±10%     295ns ± 9%    +9.42%  (p=0.002 n=10+11)
Opcodes/ROLL/4/integer-8                344ns ±48%     280ns ± 2%      ~     (p=0.882 n=11+9)
Opcodes/ROLL/4/big_bytes-8              276ns ±13%     288ns ± 4%    +4.38%  (p=0.046 n=9+11)
Opcodes/ROLL/1024/null-8               4.21µs ±70%    1.01µs ± 9%   -76.15%  (p=0.000 n=11+11)
Opcodes/ROLL/1024/integer-8            4.78µs ±82%    0.71µs ± 3%   -85.06%  (p=0.000 n=11+11)
Opcodes/ROLL/1024/big_bytes-8          3.28µs ± 5%    1.35µs ±36%   -58.91%  (p=0.000 n=9+11)
Opcodes/REVERSE3/null-8                 219ns ± 9%     224ns ± 9%      ~     (p=0.401 n=11+11)
Opcodes/REVERSE3/integer-8              261ns ±28%     220ns ± 6%   -15.67%  (p=0.015 n=11+11)
Opcodes/REVERSE3/big_bytes-8            245ns ±31%     218ns ± 7%      ~     (p=0.051 n=10+11)
Opcodes/REVERSE4/null-8                 223ns ±10%     218ns ± 6%      ~     (p=0.300 n=11+11)
Opcodes/REVERSE4/integer-8              233ns ±10%     220ns ± 7%    -5.74%  (p=0.016 n=11+11)
Opcodes/REVERSE4/big_bytes-8            225ns ±10%     220ns ± 7%      ~     (p=0.157 n=10+11)
Opcodes/REVERSEN/5/null-8               281ns ±12%     277ns ± 4%      ~     (p=0.847 n=11+11)
Opcodes/REVERSEN/5/integer-8            280ns ±11%     275ns ± 5%      ~     (p=0.243 n=11+11)
Opcodes/REVERSEN/5/big_bytes-8          283ns ± 9%     276ns ± 7%      ~     (p=0.133 n=11+11)
Opcodes/REVERSEN/1024/null-8           4.85µs ± 6%    1.94µs ± 6%   -60.07%  (p=0.000 n=10+11)
Opcodes/REVERSEN/1024/integer-8        4.97µs ± 7%    1.99µs ±22%   -59.88%  (p=0.000 n=11+11)
Opcodes/REVERSEN/1024/big_bytes-8      5.11µs ±10%    2.00µs ± 4%   -60.87%  (p=0.000 n=10+9)
Opcodes/PACK/1-8                       1.22µs ± 7%    0.95µs ± 6%   -22.17%  (p=0.000 n=10+11)
Opcodes/PACK/255-8                     11.1µs ± 4%    10.2µs ± 6%    -7.96%  (p=0.000 n=11+11)
Opcodes/PACK/1024-8                    38.9µs ± 4%    37.4µs ± 9%      ~     (p=0.173 n=10+11)
Opcodes/UNPACK/1-8                     1.32µs ±34%    0.96µs ± 6%   -27.57%  (p=0.000 n=10+11)
Opcodes/UNPACK/255-8                   27.2µs ±14%    16.0µs ±13%   -41.04%  (p=0.000 n=11+11)
Opcodes/UNPACK/1024-8                   102µs ±10%      64µs ±16%   -37.33%  (p=0.000 n=10+11)

name                                 old alloc/op   new alloc/op   delta
Opcodes/XDROP/0/1-8                     0.00B          0.00B           ~     (all equal)
Opcodes/XDROP/0/1024-8                  0.00B          0.00B           ~     (all equal)
Opcodes/XDROP/1024/1024-8               0.00B          0.00B           ~     (all equal)
Opcodes/XDROP/2047/2048-8               0.00B          0.00B           ~     (all equal)
Opcodes/DUP/null-8                      48.0B ± 0%      0.0B       -100.00%  (p=0.000 n=11+11)
Opcodes/DUP/boolean-8                   48.0B ± 0%      0.0B       -100.00%  (p=0.000 n=11+11)
Opcodes/DUP/integer/small-8             96.0B ± 0%     48.0B ± 0%   -50.00%  (p=0.000 n=11+11)
Opcodes/DUP/integer/big-8                104B ± 0%       56B ± 0%   -46.15%  (p=0.000 n=11+11)
Opcodes/DUP/bytearray/small-8           88.0B ± 0%     40.0B ± 0%   -54.55%  (p=0.000 n=11+11)
Opcodes/DUP/bytearray/big-8            65.6kB ± 0%    65.6kB ± 0%    -0.07%  (p=0.000 n=10+9)
Opcodes/DUP/buffer/small-8              48.0B ± 0%      0.0B       -100.00%  (p=0.000 n=11+11)
Opcodes/DUP/buffer/big-8                48.0B ± 0%      0.0B       -100.00%  (p=0.000 n=11+11)
Opcodes/DUP/struct/small-8              48.0B ± 0%      0.0B       -100.00%  (p=0.000 n=11+11)
Opcodes/DUP/struct/big-8                48.0B ± 0%      0.0B       -100.00%  (p=0.000 n=11+11)
Opcodes/DUP/pointer-8                    112B ± 0%       64B ± 0%   -42.86%  (p=0.000 n=11+11)
Opcodes/OVER/null-8                     48.0B ± 0%      0.0B       -100.00%  (p=0.000 n=11+11)
Opcodes/OVER/boolean-8                  48.0B ± 0%      0.0B       -100.00%  (p=0.000 n=11+11)
Opcodes/OVER/integer/small-8            96.0B ± 0%     48.0B ± 0%   -50.00%  (p=0.000 n=11+11)
Opcodes/OVER/integer/big-8               104B ± 0%       56B ± 0%   -46.15%  (p=0.000 n=11+11)
Opcodes/OVER/bytearray/small-8          88.0B ± 0%     40.0B ± 0%   -54.55%  (p=0.000 n=11+11)
Opcodes/OVER/bytearray/big-8           65.6kB ± 0%    65.6kB ± 0%    -0.07%  (p=0.000 n=9+11)
Opcodes/OVER/buffer/small-8             48.0B ± 0%      0.0B       -100.00%  (p=0.000 n=11+11)
Opcodes/OVER/buffer/big-8               48.0B ± 0%      0.0B       -100.00%  (p=0.000 n=11+11)
Opcodes/OVER/struct/small-8             48.0B ± 0%      0.0B       -100.00%  (p=0.000 n=11+11)
Opcodes/OVER/struct/big-8               48.0B ± 0%      0.0B       -100.00%  (p=0.000 n=11+11)
Opcodes/OVER/pointer-8                   112B ± 0%       64B ± 0%   -42.86%  (p=0.000 n=11+11)
Opcodes/PICK/2/null-8                   48.0B ± 0%      0.0B       -100.00%  (p=0.000 n=11+11)
Opcodes/PICK/2/boolean-8                48.0B ± 0%      0.0B       -100.00%  (p=0.000 n=11+11)
Opcodes/PICK/2/integer/small-8          96.0B ± 0%     48.0B ± 0%   -50.00%  (p=0.000 n=11+11)
Opcodes/PICK/2/integer/big-8             104B ± 0%       56B ± 0%   -46.15%  (p=0.000 n=11+11)
Opcodes/PICK/2/bytearray/small-8        88.0B ± 0%     40.0B ± 0%   -54.55%  (p=0.000 n=11+11)
Opcodes/PICK/2/bytearray/big-8         65.6kB ± 0%    65.6kB ± 0%    -0.07%  (p=0.001 n=9+11)
Opcodes/PICK/2/buffer/small-8           48.0B ± 0%      0.0B       -100.00%  (p=0.000 n=11+11)
Opcodes/PICK/2/buffer/big-8             48.0B ± 0%      0.0B       -100.00%  (p=0.000 n=11+11)
Opcodes/PICK/2/struct/small-8           48.0B ± 0%      0.0B       -100.00%  (p=0.000 n=11+11)
Opcodes/PICK/2/struct/big-8             48.0B ± 0%      0.0B       -100.00%  (p=0.000 n=11+11)
Opcodes/PICK/2/pointer-8                 112B ± 0%       64B ± 0%   -42.86%  (p=0.000 n=11+11)
Opcodes/PICK/1024/null-8                48.0B ± 0%      0.0B       -100.00%  (p=0.000 n=11+11)
Opcodes/PICK/1024/boolean-8             48.0B ± 0%      0.0B       -100.00%  (p=0.000 n=11+11)
Opcodes/PICK/1024/integer/small-8       96.0B ± 0%     48.0B ± 0%   -50.00%  (p=0.000 n=11+11)
Opcodes/PICK/1024/integer/big-8          104B ± 0%       56B ± 0%   -46.15%  (p=0.000 n=11+11)
Opcodes/PICK/1024/bytearray/small-8     88.0B ± 0%     40.0B ± 0%   -54.55%  (p=0.000 n=11+11)
Opcodes/PICK/1024/bytearray/big-8      65.6kB ± 0%    65.6kB ± 0%    -0.07%  (p=0.000 n=11+11)
Opcodes/PICK/1024/buffer/small-8        48.0B ± 0%      0.0B       -100.00%  (p=0.000 n=11+11)
Opcodes/PICK/1024/buffer/big-8          48.0B ± 0%      0.0B       -100.00%  (p=0.000 n=11+11)
Opcodes/PICK/1024/struct/small-8        48.0B ± 0%      0.0B       -100.00%  (p=0.000 n=11+11)
Opcodes/PICK/1024/pointer-8              112B ± 0%       64B ± 0%   -42.86%  (p=0.000 n=11+11)
Opcodes/TUCK/null-8                     48.0B ± 0%      0.0B       -100.00%  (p=0.000 n=11+11)
Opcodes/TUCK/boolean-8                  48.0B ± 0%      0.0B       -100.00%  (p=0.000 n=11+11)
Opcodes/TUCK/integer/small-8            96.0B ± 0%     48.0B ± 0%   -50.00%  (p=0.000 n=11+11)
Opcodes/TUCK/integer/big-8               104B ± 0%       56B ± 0%   -46.15%  (p=0.000 n=11+11)
Opcodes/TUCK/bytearray/small-8          88.0B ± 0%     40.0B ± 0%   -54.55%  (p=0.000 n=11+11)
Opcodes/TUCK/bytearray/big-8           65.6kB ± 0%    65.6kB ± 0%    -0.07%  (p=0.000 n=10+11)
Opcodes/TUCK/buffer/small-8             48.0B ± 0%      0.0B       -100.00%  (p=0.000 n=11+11)
Opcodes/TUCK/buffer/big-8               48.0B ± 0%      0.0B       -100.00%  (p=0.000 n=11+11)
Opcodes/TUCK/struct/small-8             48.0B ± 0%      0.0B       -100.00%  (p=0.000 n=11+11)
Opcodes/TUCK/struct/big-8               48.0B ± 0%      0.0B       -100.00%  (p=0.000 n=11+11)
Opcodes/TUCK/pointer-8                   112B ± 0%       64B ± 0%   -42.86%  (p=0.000 n=11+11)
Opcodes/SWAP/null-8                     0.00B          0.00B           ~     (all equal)
Opcodes/SWAP/integer-8                  0.00B          0.00B           ~     (all equal)
Opcodes/SWAP/big_bytes-8                0.00B          0.00B           ~     (all equal)
Opcodes/ROT/null-8                      0.00B          0.00B           ~     (all equal)
Opcodes/ROT/integer-8                   0.00B          0.00B           ~     (all equal)
Opcodes/ROT/big_bytes-8                 0.00B          0.00B           ~     (all equal)
Opcodes/ROLL/4/null-8                   0.00B          0.00B           ~     (all equal)
Opcodes/ROLL/4/integer-8                0.00B          0.00B           ~     (all equal)
Opcodes/ROLL/4/big_bytes-8              0.00B          0.00B           ~     (all equal)
Opcodes/ROLL/1024/null-8                0.00B          0.00B           ~     (all equal)
Opcodes/ROLL/1024/integer-8             0.00B          0.00B           ~     (all equal)
Opcodes/ROLL/1024/big_bytes-8           0.00B          0.00B           ~     (all equal)
Opcodes/REVERSE3/null-8                 0.00B          0.00B           ~     (all equal)
Opcodes/REVERSE3/integer-8              0.00B          0.00B           ~     (all equal)
Opcodes/REVERSE3/big_bytes-8            0.00B          0.00B           ~     (all equal)
Opcodes/REVERSE4/null-8                 0.00B          0.00B           ~     (all equal)
Opcodes/REVERSE4/integer-8              0.00B          0.00B           ~     (all equal)
Opcodes/REVERSE4/big_bytes-8            0.00B          0.00B           ~     (all equal)
Opcodes/REVERSEN/5/null-8               0.00B          0.00B           ~     (all equal)
Opcodes/REVERSEN/5/integer-8            0.00B          0.00B           ~     (all equal)
Opcodes/REVERSEN/5/big_bytes-8          0.00B          0.00B           ~     (all equal)
Opcodes/REVERSEN/1024/null-8            0.00B          0.00B           ~     (all equal)
Opcodes/REVERSEN/1024/integer-8         0.00B          0.00B           ~     (all equal)
Opcodes/REVERSEN/1024/big_bytes-8       0.00B          0.00B           ~     (all equal)
Opcodes/PACK/1-8                         144B ± 0%       96B ± 0%   -33.33%  (p=0.000 n=11+11)
Opcodes/PACK/255-8                     4.22kB ± 0%    4.18kB ± 0%    -1.14%  (p=0.000 n=11+11)
Opcodes/PACK/1024-8                    16.5kB ± 0%    16.5kB ± 0%    -0.29%  (p=0.000 n=11+11)
Opcodes/UNPACK/1-8                       168B ± 0%       72B ± 0%   -57.14%  (p=0.000 n=11+11)
Opcodes/UNPACK/255-8                   12.4kB ± 0%     7.8kB ± 0%   -37.28%  (p=0.000 n=11+11)
Opcodes/UNPACK/1024-8                  49.3kB ± 0%    52.8kB ± 0%    +7.18%  (p=0.000 n=11+11)

name                                 old allocs/op  new allocs/op  delta
Opcodes/XDROP/0/1-8                      0.00           0.00           ~     (all equal)
Opcodes/XDROP/0/1024-8                   0.00           0.00           ~     (all equal)
Opcodes/XDROP/1024/1024-8                0.00           0.00           ~     (all equal)
Opcodes/XDROP/2047/2048-8                0.00           0.00           ~     (all equal)
Opcodes/DUP/null-8                       1.00 ± 0%      0.00       -100.00%  (p=0.000 n=11+11)
Opcodes/DUP/boolean-8                    1.00 ± 0%      0.00       -100.00%  (p=0.000 n=11+11)
Opcodes/DUP/integer/small-8              3.00 ± 0%      2.00 ± 0%   -33.33%  (p=0.000 n=11+11)
Opcodes/DUP/integer/big-8                3.00 ± 0%      2.00 ± 0%   -33.33%  (p=0.000 n=11+11)
Opcodes/DUP/bytearray/small-8            3.00 ± 0%      2.00 ± 0%   -33.33%  (p=0.000 n=11+11)
Opcodes/DUP/bytearray/big-8              3.00 ± 0%      2.00 ± 0%   -33.33%  (p=0.000 n=11+11)
Opcodes/DUP/buffer/small-8               1.00 ± 0%      0.00       -100.00%  (p=0.000 n=11+11)
Opcodes/DUP/buffer/big-8                 1.00 ± 0%      0.00       -100.00%  (p=0.000 n=11+11)
Opcodes/DUP/struct/small-8               1.00 ± 0%      0.00       -100.00%  (p=0.000 n=11+11)
Opcodes/DUP/struct/big-8                 1.00 ± 0%      0.00       -100.00%  (p=0.000 n=11+11)
Opcodes/DUP/pointer-8                    2.00 ± 0%      1.00 ± 0%   -50.00%  (p=0.000 n=11+11)
Opcodes/OVER/null-8                      1.00 ± 0%      0.00       -100.00%  (p=0.000 n=11+11)
Opcodes/OVER/boolean-8                   1.00 ± 0%      0.00       -100.00%  (p=0.000 n=11+11)
Opcodes/OVER/integer/small-8             3.00 ± 0%      2.00 ± 0%   -33.33%  (p=0.000 n=11+11)
Opcodes/OVER/integer/big-8               3.00 ± 0%      2.00 ± 0%   -33.33%  (p=0.000 n=11+11)
Opcodes/OVER/bytearray/small-8           3.00 ± 0%      2.00 ± 0%   -33.33%  (p=0.000 n=11+11)
Opcodes/OVER/bytearray/big-8             3.00 ± 0%      2.00 ± 0%   -33.33%  (p=0.000 n=11+11)
Opcodes/OVER/buffer/small-8              1.00 ± 0%      0.00       -100.00%  (p=0.000 n=11+11)
Opcodes/OVER/buffer/big-8                1.00 ± 0%      0.00       -100.00%  (p=0.000 n=11+11)
Opcodes/OVER/struct/small-8              1.00 ± 0%      0.00       -100.00%  (p=0.000 n=11+11)
Opcodes/OVER/struct/big-8                1.00 ± 0%      0.00       -100.00%  (p=0.000 n=11+11)
Opcodes/OVER/pointer-8                   2.00 ± 0%      1.00 ± 0%   -50.00%  (p=0.000 n=11+11)
Opcodes/PICK/2/null-8                    1.00 ± 0%      0.00       -100.00%  (p=0.000 n=11+11)
Opcodes/PICK/2/boolean-8                 1.00 ± 0%      0.00       -100.00%  (p=0.000 n=11+11)
Opcodes/PICK/2/integer/small-8           3.00 ± 0%      2.00 ± 0%   -33.33%  (p=0.000 n=11+11)
Opcodes/PICK/2/integer/big-8             3.00 ± 0%      2.00 ± 0%   -33.33%  (p=0.000 n=11+11)
Opcodes/PICK/2/bytearray/small-8         3.00 ± 0%      2.00 ± 0%   -33.33%  (p=0.000 n=11+11)
Opcodes/PICK/2/bytearray/big-8           3.00 ± 0%      2.00 ± 0%   -33.33%  (p=0.000 n=11+11)
Opcodes/PICK/2/buffer/small-8            1.00 ± 0%      0.00       -100.00%  (p=0.000 n=11+11)
Opcodes/PICK/2/buffer/big-8              1.00 ± 0%      0.00       -100.00%  (p=0.000 n=11+11)
Opcodes/PICK/2/struct/small-8            1.00 ± 0%      0.00       -100.00%  (p=0.000 n=11+11)
Opcodes/PICK/2/struct/big-8              1.00 ± 0%      0.00       -100.00%  (p=0.000 n=11+11)
Opcodes/PICK/2/pointer-8                 2.00 ± 0%      1.00 ± 0%   -50.00%  (p=0.000 n=11+11)
Opcodes/PICK/1024/null-8                 1.00 ± 0%      0.00       -100.00%  (p=0.000 n=11+11)
Opcodes/PICK/1024/boolean-8              1.00 ± 0%      0.00       -100.00%  (p=0.000 n=11+11)
Opcodes/PICK/1024/integer/small-8        3.00 ± 0%      2.00 ± 0%   -33.33%  (p=0.000 n=11+11)
Opcodes/PICK/1024/integer/big-8          3.00 ± 0%      2.00 ± 0%   -33.33%  (p=0.000 n=11+11)
Opcodes/PICK/1024/bytearray/small-8      3.00 ± 0%      2.00 ± 0%   -33.33%  (p=0.000 n=11+11)
Opcodes/PICK/1024/bytearray/big-8        3.00 ± 0%      2.00 ± 0%   -33.33%  (p=0.000 n=11+11)
Opcodes/PICK/1024/buffer/small-8         1.00 ± 0%      0.00       -100.00%  (p=0.000 n=11+11)
Opcodes/PICK/1024/buffer/big-8           1.00 ± 0%      0.00       -100.00%  (p=0.000 n=11+11)
Opcodes/PICK/1024/struct/small-8         1.00 ± 0%      0.00       -100.00%  (p=0.000 n=11+11)
Opcodes/PICK/1024/pointer-8              2.00 ± 0%      1.00 ± 0%   -50.00%  (p=0.000 n=11+11)
Opcodes/TUCK/null-8                      1.00 ± 0%      0.00       -100.00%  (p=0.000 n=11+11)
Opcodes/TUCK/boolean-8                   1.00 ± 0%      0.00       -100.00%  (p=0.000 n=11+11)
Opcodes/TUCK/integer/small-8             3.00 ± 0%      2.00 ± 0%   -33.33%  (p=0.000 n=11+11)
Opcodes/TUCK/integer/big-8               3.00 ± 0%      2.00 ± 0%   -33.33%  (p=0.000 n=11+11)
Opcodes/TUCK/bytearray/small-8           3.00 ± 0%      2.00 ± 0%   -33.33%  (p=0.000 n=11+11)
Opcodes/TUCK/bytearray/big-8             3.00 ± 0%      2.00 ± 0%   -33.33%  (p=0.000 n=11+11)
Opcodes/TUCK/buffer/small-8              1.00 ± 0%      0.00       -100.00%  (p=0.000 n=11+11)
Opcodes/TUCK/buffer/big-8                1.00 ± 0%      0.00       -100.00%  (p=0.000 n=11+11)
Opcodes/TUCK/struct/small-8              1.00 ± 0%      0.00       -100.00%  (p=0.000 n=11+11)
Opcodes/TUCK/struct/big-8                1.00 ± 0%      0.00       -100.00%  (p=0.000 n=11+11)
Opcodes/TUCK/pointer-8                   2.00 ± 0%      1.00 ± 0%   -50.00%  (p=0.000 n=11+11)
Opcodes/SWAP/null-8                      0.00           0.00           ~     (all equal)
Opcodes/SWAP/integer-8                   0.00           0.00           ~     (all equal)
Opcodes/SWAP/big_bytes-8                 0.00           0.00           ~     (all equal)
Opcodes/ROT/null-8                       0.00           0.00           ~     (all equal)
Opcodes/ROT/integer-8                    0.00           0.00           ~     (all equal)
Opcodes/ROT/big_bytes-8                  0.00           0.00           ~     (all equal)
Opcodes/ROLL/4/null-8                    0.00           0.00           ~     (all equal)
Opcodes/ROLL/4/integer-8                 0.00           0.00           ~     (all equal)
Opcodes/ROLL/4/big_bytes-8               0.00           0.00           ~     (all equal)
Opcodes/ROLL/1024/null-8                 0.00           0.00           ~     (all equal)
Opcodes/ROLL/1024/integer-8              0.00           0.00           ~     (all equal)
Opcodes/ROLL/1024/big_bytes-8            0.00           0.00           ~     (all equal)
Opcodes/REVERSE3/null-8                  0.00           0.00           ~     (all equal)
Opcodes/REVERSE3/integer-8               0.00           0.00           ~     (all equal)
Opcodes/REVERSE3/big_bytes-8             0.00           0.00           ~     (all equal)
Opcodes/REVERSE4/null-8                  0.00           0.00           ~     (all equal)
Opcodes/REVERSE4/integer-8               0.00           0.00           ~     (all equal)
Opcodes/REVERSE4/big_bytes-8             0.00           0.00           ~     (all equal)
Opcodes/REVERSEN/5/null-8                0.00           0.00           ~     (all equal)
Opcodes/REVERSEN/5/integer-8             0.00           0.00           ~     (all equal)
Opcodes/REVERSEN/5/big_bytes-8           0.00           0.00           ~     (all equal)
Opcodes/REVERSEN/1024/null-8             0.00           0.00           ~     (all equal)
Opcodes/REVERSEN/1024/integer-8          0.00           0.00           ~     (all equal)
Opcodes/REVERSEN/1024/big_bytes-8        0.00           0.00           ~     (all equal)
Opcodes/PACK/1-8                         5.00 ± 0%      4.00 ± 0%   -20.00%  (p=0.000 n=11+11)
Opcodes/PACK/255-8                       5.00 ± 0%      4.00 ± 0%   -20.00%  (p=0.000 n=11+11)
Opcodes/PACK/1024-8                      5.00 ± 0%      4.00 ± 0%   -20.00%  (p=0.000 n=11+11)
Opcodes/UNPACK/1-8                       5.00 ± 0%      3.00 ± 0%   -40.00%  (p=0.000 n=11+11)
Opcodes/UNPACK/255-8                      259 ± 0%         7 ± 0%   -97.30%  (p=0.000 n=11+11)
Opcodes/UNPACK/1024-8                   1.03k ± 0%     0.01k ± 0%   -98.93%  (p=0.000 n=11+11)
 2021-08-24 15:28:14 +03:00
Roman Khimov
ed35cf8f12 vm: store exception stack in the context 
Avoid allocating it.
 2021-08-23 18:29:27 +03:00
Roman Khimov
d3198c3082 stackitem: avoid going through Value() in serialization 
Doesn't change much, but still simpler.

name               old time/op    new time/op    delta
SerializeSimple-8     452ns ±10%     435ns ± 4%   ~     (p=0.356 n=10+9)

name               old alloc/op   new alloc/op   delta
SerializeSimple-8      432B ± 0%      432B ± 0%   ~     (all equal)

name               old allocs/op  new allocs/op  delta
SerializeSimple-8      7.00 ± 0%      7.00 ± 0%   ~     (all equal)
 2021-08-23 18:29:07 +03:00
Roman Khimov
5b12dd2025
Merge pull request #2128 from nspcc-dev/vm-update-int 
Some VM optimizations
 2021-08-13 16:16:01 +03:00
Evgeniy Stratonikov
6879f76a13 stackitem: make Buffer an alias to []byte 
Signed-off-by: Evgeniy Stratonikov <evgeniy@nspcc.ru>
 2021-08-13 14:41:26 +03:00
Evgeniy Stratonikov
1dfef4ba26 stackitem: make ByteArray an alias to []byte 
Signed-off-by: Evgeniy Stratonikov <evgeniy@nspcc.ru>
 2021-08-13 14:41:26 +03:00
Evgeniy Stratonikov
4f98ec2f53 vm: embed reference counter in compound items 
```
name              old time/op  new time/op  delta
RefCounter_Add-8  44.8ns ± 4%  11.7ns ± 3%  -73.94%  (p=0.000 n=10+10)
```

Signed-off-by: Evgeniy Stratonikov <evgeniy@nspcc.ru>
 2021-08-13 14:41:26 +03:00
Evgeniy Stratonikov
f5d1277bfd vm: do not copy parameter 
Signed-off-by: Evgeniy Stratonikov <evgeniy@nspcc.ru>
 2021-08-13 11:52:38 +03:00
Evgeniy Stratonikov
e2910a7cb4 vm/cli: add public key -> address conversion, fix #2121 
Signed-off-by: Evgeniy Stratonikov <evgeniy@nspcc.ru>
 2021-08-13 10:43:49 +03:00
Evgeniy Stratonikov
a5516e8c96 stackitem: make BigInteger alias to big.Int 
Remove one indirection step.
``
name       old time/op    new time/op    delta
MakeInt-8    79.7ns ± 8%    56.2ns ± 8%  -29.44%  (p=0.000 n=10+10)

name       old alloc/op   new alloc/op   delta
MakeInt-8     48.0B ± 0%     40.0B ± 0%  -16.67%  (p=0.000 n=10+10)

name       old allocs/op  new allocs/op  delta
MakeInt-8      3.00 ± 0%      2.00 ± 0%  -33.33%  (p=0.000 n=10+10)
```

Signed-off-by: Evgeniy Stratonikov <evgeniy@nspcc.ru>
 2021-08-12 17:53:36 +03:00
Evgeniy Stratonikov
cff8b1c24e stackitem: use Bool item directly 
It is always copied.

Signed-off-by: Evgeniy Stratonikov <evgeniy@nspcc.ru>
 2021-08-12 17:53:36 +03:00
Roman Khimov
bdb2d24a5a vm: remove istack redirection in VM 
VM always has istack and it doesn't even change, so doing this microallocation
makes no sense. Notice that estack is a bit harder to change we do replace it
in some cases and we compare pointers to it as well.
 2021-08-11 14:42:01 +03:00
Roman Khimov
ff7d594bef vm: store refcounter directly in VM 
VM always has it, so allocating yet another object makes no sense.
 2021-08-11 13:25:58 +03:00
Evgeniy Stratonikov
f02d8b4ec4 stackitem: serialize integers to the pre-allocated slice 
Signed-off-by: Evgeniy Stratonikov <evgeniy@nspcc.ru>
 2021-08-06 11:59:24 +03:00
Roman Khimov
85936de254 vm: don't create reference counter when it's not needed 
* invocation stack doesn't need refcounting
 * exception stack doesn't need refcounting
 * evaluation stack always has VM-level refcounter
 2021-08-02 22:38:41 +03:00
Roman Khimov
2c2ccdca74 opcode: optimize IsValid 
Map access costs much more than array access.

name       old time/op  new time/op  delta
IsValid-8  17.6ns ± 2%   1.1ns ± 2%  -93.68%  (p=0.008 n=5+5)
 2021-08-02 21:46:19 +03:00
Evgeniy Stratonikov
bdb9748c1b native/std: restrict amount of items in JSON deserialization 
Signed-off-by: Evgeniy Stratonikov <evgeniy@nspcc.ru>
 2021-08-02 18:57:47 +03:00
Roman Khimov
ad35db66b5
Merge pull request #2091 from nspcc-dev/tune-error-messages 
*: simplify some error messages
 2021-07-23 10:40:26 +03:00
Roman Khimov
1d8ad5b84a *: simplify some error messages 
Log:
2021-07-23T09:59:18.948+0300    WARN    contract invocation failed      {"tx": "de3e3c1f1d37e4528990f894dea5583fd320485ad3862a95eb0e8823eecf4a5f", "block": 9643, "error": "error encountered at instruction 1 (SYSCALL): error during call from native: error encountered at instruction 745 (CAT): invalid conversion: Map/ByteString"}

The word "error" appears 4 times here.
 2021-07-23 10:08:09 +03:00
Roman Khimov
6b852fc7b6
Merge pull request #2089 from nspcc-dev/fix-emit 
vm/emit: improve error message
 2021-07-22 15:17:59 +03:00
Evgeniy Stratonikov
808c30e7d7 vm/emit: improve error message 
Show unsupported type instead of value.

Signed-off-by: Evgeniy Stratonikov <evgeniy@nspcc.ru>
 2021-07-22 14:23:32 +03:00
Roman Khimov
ede410a4a7 go.mod: update ishell package 
It only adds go.mod and changes import path, that's it.
 2021-07-21 23:28:26 +03:00
Roman Khimov
0583f252ab *: create real temporary dirs and files in tests 
Improve reliability.
 2021-07-20 12:51:11 +03:00
Roman Khimov
19717dd9a8 slice: introduce common Copy helper 
It's a bit more convenient to use.
 2021-07-19 22:57:55 +03:00
Roman Khimov
a54e3516d1 slice: add Reverse function, deduplicate code a bit 2021-07-19 22:57:55 +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
Roman Khimov
1568ebc513 stackitem: rework struct cloning protection 
Count everything, fail early, make it more compatible with
neo-project/neo-vm#423.
 2021-07-19 15:42:42 +03:00
Roman Khimov
5f13de3a76 *: simplify some integer checks with IsUint64() 
If we need a positive number we can do `IsUint64()` instead of checking that
`Int64()` is `> 0`.
 2021-07-19 15:42:42 +03:00
Roman Khimov
233307aca5 stackitem: completely drop MaxArraySize 
Turns out C# VM doesn't have it since preview2, so our limiting of
MaxArraySize in incompatible with it. Removing this limit shouldn't be a
problem with the reference counter we have, both APPEND and SETITEM add things
to reference counter and we can't exceed MaxStackSize. PACK on the other hand
can't get more than MaxStackSize-1 of input elements.

Unify NEWSTRUCT with NEWARRAY* and use better integer checks at the same time.

Multisig limit is still 1024.
 2021-07-19 15:42:42 +03:00
Roman Khimov
ee4a647934 stackitem: limit EQUAL for deeply nested structs 
See neo-project/neo-vm#428.
 2021-07-19 15:42:42 +03:00
Roman Khimov
f89f0300f6 stackitem: improve test coverage a bit 2021-07-19 15:42:42 +03:00
Roman Khimov
df2430d5e4 stackitem: limit deserialization to MaxDeserialized items 
Follow neo-project/neo#2531. Even though it's not strictly required (our node
handles problematic script just fine) we better be compliant wrt
deserialization behavior. MaxDeserialized is introduced to avoid moving
MaxStackSize which is a VM parameter.
 2021-07-19 15:42:42 +03:00
Roman Khimov
aab18c3083 stackitem: introduce Convertible interface 
We have a lot of native contract types that are converted to stack items
before serialization, then deserialized as stack items and converted back to
regular structures. stackitem.Convertible allows to remove a lot of repetitive
io.Serializable code.

This also introduces to/from converter in testserdes which unfortunately
required to change util tests to avoid circular references.
 2021-07-19 15:42:42 +03:00
Roman Khimov
fbe8bd2d9c stackitem: limit deserialized arrays/maps 
See neo-project/neo#2531, even though they use MaxStackSize there resulting
element is not valid unless it has <=MaxArraySize elements.
 2021-07-19 15:42:42 +03:00
Roman Khimov
654c4a6589 stackitem: properly pass allowInvalid on binary deserialization 
Otherwise DecodeBinaryProtected() is broken for arrays/maps.
 2021-07-19 15:42:41 +03:00
Roman Khimov
15be763bb3 vm: limit POW, fix #2060 
Calculating pow(pow(2, 255), 0xffffffff) takes unknown amount of time. See
also neo-project/neo-vm#422.
 2021-07-19 15:42:41 +03:00
Roman Khimov
d638aee7a1
Merge pull request #2053 from nspcc-dev/stackitem-json 
Speedup stackitem json serialization
 2021-07-13 11:27:33 +03:00
Evgeniy Stratonikov
0611031fd4 stackitem/test: improve coverage for serialization 
Signed-off-by: Evgeniy Stratonikov <evgeniy@nspcc.ru>
 2021-07-13 11:06:19 +03:00
Evgeniy Stratonikov
8fdc7e32f5 stackitem: cache serialized results in EncodeBinary 
```
name            old time/op    new time/op    delta
EncodeBinary-8    8.39ms ± 1%    0.05ms ±21%  -99.44%  (p=0.000 n=10+9)

name            old alloc/op   new alloc/op   delta
EncodeBinary-8    2.24MB ± 0%    0.33MB ± 0%  -85.29%  (p=0.000 n=9+10)

name            old allocs/op  new allocs/op  delta
EncodeBinary-8     65.6k ± 0%      0.0k ± 0%  -99.95%  (p=0.000 n=10+10)
```

Signed-off-by: Evgeniy Stratonikov <evgeniy@nspcc.ru>
 2021-07-13 11:06:19 +03:00
Evgeniy Stratonikov
17a3f17c74 stackitem: use byte-slice directly during encoding 
```
name            old time/op    new time/op    delta
EncodeBinary-8    10.6ms ± 1%     8.4ms ± 1%  -20.94%  (p=0.000 n=9+10)

name            old alloc/op   new alloc/op   delta
EncodeBinary-8    1.64MB ± 0%    2.24MB ± 0%  +36.18%  (p=0.000 n=8+9)

name            old allocs/op  new allocs/op  delta
EncodeBinary-8      131k ± 0%       66k ± 0%  -49.98%  (p=0.000 n=10+10)
```

Signed-off-by: Evgeniy Stratonikov <evgeniy@nspcc.ru>
 2021-07-13 11:06:18 +03:00
Evgeniy Stratonikov
c4eb7db8a5 stackitem: access value of Array/Struct directly 
```
name      old time/op    new time/op    delta
ToJSON-8    50.3µs ±34%    47.8µs ± 9%     ~     (p=0.971 n=10+10)

name      old alloc/op   new alloc/op   delta
ToJSON-8     396kB ± 0%     396kB ± 0%   -0.10%  (p=0.000 n=6+10)

name      old allocs/op  new allocs/op  delta
ToJSON-8      34.0 ± 0%      18.0 ± 0%  -47.06%  (p=0.000 n=10+10)
```

Signed-off-by: Evgeniy Stratonikov <evgeniy@nspcc.ru>
 2021-07-12 14:40:21 +03:00
Evgeniy Stratonikov
dc0a17dd0e stackitem: cache visited items while marshaling json 
```
name      old time/op    new time/op    delta
ToJSON-8    4.52ms ± 4%    0.05ms ±34%  -98.89%  (p=0.000 n=8+10)

name      old alloc/op   new alloc/op   delta
ToJSON-8    2.13MB ± 0%    0.40MB ± 0%  -81.44%  (p=0.000 n=9+6)

name      old allocs/op  new allocs/op  delta
ToJSON-8     65.6k ± 0%      0.0k ± 0%  -99.95%  (p=0.000 n=10+10)
```

Signed-off-by: Evgeniy Stratonikov <evgeniy@nspcc.ru>
 2021-07-12 14:40:21 +03:00
Evgeniy Stratonikov
69cdd5252a stackitem: add benchmark for serialization routines 
Signed-off-by: Evgeniy Stratonikov <evgeniy@nspcc.ru>
 2021-07-12 14:40:17 +03:00
Roman Khimov
fe3c68b92d vm: panic in cloneIfStruct 
It's internal, so we can deduplicate code a bit.
 2021-07-12 11:52:24 +03:00
Roman Khimov
4000dd692c vm: make cloning limits a bit more effective 
Take actual reference counter value into account.
 2021-07-11 19:37:06 +03:00
Roman Khimov
cfe41abd35 vm: fix OOM during nested structure cloning 
Resulting item can't have more than MaxStackSize elements. Technically this
limits to MaxStackSize cloned elements but it's considered to be enough to
mitigate the issue (the next size check is going to happen during push to the
stack). See neo-project/neo#2534, thanks @vang1ong7ang.
 2021-07-11 18:47:50 +03:00