a534a960db types: use (*math/big.Int).BitLen() == 0 to check if value is 0 (#8580)
Instead of using len((*math/big.Int).Bytes()) == 0, which expensively
creates a byte slice and marshals a value, on the majority hot path,
instead use the cheaper method .BitLen() to check if 0.

Benchmarking results, just from types:

name                                           old time/op    new time/op    delta
CoinsAdditionIntersect/sizes:_A_1,_B_1-8          132ns ± 2%     126ns ±13%   -4.55%  (p=0.050 n=10+10)
CoinsAdditionIntersect/sizes:_A_5,_B_5-8         1.41µs ± 3%    1.41µs ± 2%     ~     (p=1.000 n=10+10)
CoinsAdditionIntersect/sizes:_A_5,_B_20-8        2.30µs ± 1%    2.27µs ± 3%     ~     (p=0.066 n=10+10)
CoinsAdditionIntersect/sizes:_A_1,_B_1000-8      30.9µs ± 3%    30.7µs ± 1%     ~     (p=0.218 n=10+10)
CoinsAdditionIntersect/sizes:_A_2,_B_1000-8      31.4µs ± 3%    30.8µs ± 2%   -1.94%  (p=0.015 n=10+10)
CoinsAdditionNoIntersect/sizes:_A_1,_B_1-8        116ns ± 1%     114ns ± 4%     ~     (p=0.142 n=10+10)
CoinsAdditionNoIntersect/sizes:_A_5,_B_5-8       1.11µs ± 1%    1.08µs ± 3%   -2.36%  (p=0.003 n=8+10)
CoinsAdditionNoIntersect/sizes:_A_5,_B_20-8      1.85µs ± 2%    1.82µs ± 1%   -1.38%  (p=0.001 n=10+9)
CoinsAdditionNoIntersect/sizes:_A_1,_B_1000-8    30.7µs ± 1%    30.6µs ± 3%     ~     (p=0.393 n=10+10)
CoinsAdditionNoIntersect/sizes:_A_2,_B_1000-8    31.1µs ± 1%    30.7µs ± 2%   -1.32%  (p=0.015 n=10+10)
CoinsAdditionNoIntersect/sizes:_A_1000,_B_2-8    31.0µs ± 2%    30.7µs ± 2%     ~     (p=0.190 n=10+10)
Bech32ifyPubKey-8                                28.8µs ± 5%    28.8µs ± 3%     ~     (p=0.965 n=10+8)
GetPubKeyFromBech32-8                            38.8µs ± 3%    39.4µs ± 2%   +1.70%  (p=0.013 n=9+10)
ParseCoin-8                                      16.7µs ± 6%    15.8µs ± 4%   -5.21%  (p=0.001 n=10+10)
MarshalTo-8                                       521ns ± 5%     508ns ± 3%   -2.56%  (p=0.029 n=10+10)
UintMarshal-8                                    3.10µs ±17%    2.56µs ± 3%  -17.45%  (p=0.000 n=10+9)
IntMarshal-8                                     2.52µs ±10%    1.94µs ± 2%  -23.10%  (p=0.000 n=10+10)

name                                           old alloc/op   new alloc/op   delta
Bech32ifyPubKey-8                                4.02kB ± 0%    4.02kB ± 0%     ~     (all equal)
GetPubKeyFromBech32-8                            2.48kB ± 0%    2.48kB ± 0%     ~     (all equal)
ParseCoin-8                                      2.21kB ± 0%    2.21kB ± 0%     ~     (all equal)
MarshalTo-8                                       80.0B ± 0%     80.0B ± 0%     ~     (all equal)
UintMarshal-8                                      440B ± 0%      392B ± 0%  -10.91%  (p=0.000 n=10+10)
IntMarshal-8                                       216B ± 0%      168B ± 0%  -22.22%  (p=0.000 n=10+10)

name                                           old allocs/op  new allocs/op  delta
Bech32ifyPubKey-8                                  25.0 ± 0%      25.0 ± 0%     ~     (all equal)
GetPubKeyFromBech32-8                              85.0 ± 0%      85.0 ± 0%     ~     (all equal)
ParseCoin-8                                        71.0 ± 0%      71.0 ± 0%     ~     (all equal)
MarshalTo-8                                        2.00 ± 0%      2.00 ± 0%     ~     (all equal)
UintMarshal-8                                      31.0 ± 0%      25.0 ± 0%  -19.35%  (p=0.000 n=10+10)
IntMarshal-8                                       24.0 ± 0%      18.0 ± 0%  -25.00%  (p=0.000 n=10+10)

name                                           old speed      new speed      delta
UintMarshal-8                                  2.27MB/s ±15%  2.75MB/s ± 2%  +20.87%  (p=0.000 n=10+8)
IntMarshal-8                                   2.78MB/s ± 9%  3.60MB/s ± 2%  +29.69%  (p=0.000 n=10+10)

Fixes #8575

Co-authored-by: Alessio Treglia <alessio@tendermint.com>
Co-authored-by: mergify[bot] <37929162+mergify[bot]@users.noreply.github.com>
2021-02-15 10:53:10 +00:00
2021-02-15 09:41:26 +00:00
2021-02-10 12:27:06 -05:00
2021-01-18 12:41:34 -03:00
2021-02-12 12:27:07 -05:00
2021-01-12 10:08:42 +00:00
2020-03-01 16:18:22 +00:00
2021-01-18 12:41:34 -03:00
2021-02-12 12:37:56 -05:00
2020-05-21 11:12:51 +02:00

Cosmos SDK

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The Cosmos-SDK is a framework for building blockchain applications in Golang. It is being used to build Gaia, the first implementation of the Cosmos Hub.

WARNING: The SDK has mostly stabilized, but we are still making some breaking changes.

Note: Requires Go 1.15+

Quick Start

To learn how the SDK works from a high-level perspective, go to the SDK Intro.

If you want to get started quickly and learn how to build on top of the SDK, please follow the SDK Application Tutorial. You can also fork the tutorial's repository to get started building your own Cosmos SDK application.

For more, please go to the Cosmos SDK Docs.

Cosmos Hub Mainnet

The Cosmos Hub application, gaia, has moved to its own repository. Go there to join the Cosmos Hub mainnet and more.

Starport

If you are starting a new app or a new module you can use Starport to help you get started and speed up development. If you have any questions or find a bug, feel free to open an issue in the repo.

Disambiguation

This Cosmos-SDK project is not related to the React-Cosmos project (yet). Many thanks to Evan Coury and Ovidiu (@skidding) for this Github organization name. As per our agreement, this disambiguation notice will stay here.

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