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refactor: Remove ::Params() global from CChainState #21789

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merged 2 commits into from
Jun 29, 2021

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maflcko
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@maflcko maflcko commented Apr 27, 2021

The ::Params() global is verbose and confusing. Also it makes tests a bit harder to write because they'd have to mock a global.

Fix all issues by simply using a member variable that points to the right params.

(Can be reviewed with --word-diff-regex=.)

@maflcko maflcko force-pushed the 2104-ChainstateParamsRefactor branch from fa5915e to fad0c2a Compare April 27, 2021 18:51
@jamesob
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jamesob commented Apr 27, 2021

Concept ACK, will review soon

@practicalswift
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Concept ACK

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@fanquake
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Concept ACK

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DrahtBot commented Apr 28, 2021

The following sections might be updated with supplementary metadata relevant to reviewers and maintainers.

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Reviewers, this pull request conflicts with the following ones:

If you consider this pull request important, please also help to review the conflicting pull requests. Ideally, start with the one that should be merged first.

@kiminuo
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kiminuo commented Apr 28, 2021

Concept ACK.

It looks like a very nice simplification which makes it harder to make a mistake.

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DrahtBot commented May 3, 2021

🕵️ @sipa has been requested to review this pull request as specified in the REVIEWERS file.

src/chain.h Outdated Show resolved Hide resolved
@kiminuo
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kiminuo commented Jun 3, 2021

The main change in the first commit (fa216cc) seems to be: "refactor: Add CChainState member to CChainState class" rather than "refactor: Remove ::Params() global from CChainState".

Also, the changes like this fa216cc#diff-97c3a52bc5fad452d82670a7fd291800bae20c7bc35bb82686c2c0a4ea7b5b98R2284 in the first commit (fa216cc) can probably be moved to the second commit (fa06aaa) so that the first commit would only introduce m_params.

Changes in fa216cc & fa06aaa LGTM.

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jnewbery commented Jun 9, 2021

Concept ACK

@maflcko
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maflcko commented Jun 10, 2021

I think the two commits are nicely split up. The first one removes it from inside the functions, the second removes the arg of the functions.

@maflcko maflcko force-pushed the 2104-ChainstateParamsRefactor branch from faa72ee to 2222da8 Compare June 10, 2021 09:49
@jnewbery
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ACK 2222da8

MarcoFalke added 2 commits June 13, 2021 09:39
…ctions

It is confusing and verbose to repeatedly access the global when a
member variable can simply refer to it.
Passing this is confusing and redundant with the m_params member.
@maflcko
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maflcko commented Jun 14, 2021

Rebased

@jnewbery
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ACK fa0d921

@kiminuo
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kiminuo commented Jun 14, 2021

utACK fa0d921

@@ -98,7 +98,7 @@ BOOST_AUTO_TEST_CASE(findCommonAncestor)
auto* orig_tip = active.Tip();
for (int i = 0; i < 10; ++i) {
BlockValidationState state;
m_node.chainman->ActiveChainstate().InvalidateBlock(state, Params(), active.Tip());
m_node.chainman->ActiveChainstate().InvalidateBlock(state, active.Tip());
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@kiminuo kiminuo Jun 14, 2021

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Is #include <chainparams.h> still needed?

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Thanks, will try to remove if I have to force push

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ACK fa0d921 🍉
Nice refactoring idea, glad to see this simplification of the CChainState interface.

@fanquake fanquake merged commit 8071ec1 into bitcoin:master Jun 29, 2021
@maflcko maflcko deleted the 2104-ChainstateParamsRefactor branch June 29, 2021 06:39
sidhujag pushed a commit to syscoin/syscoin that referenced this pull request Jun 29, 2021
gwillen pushed a commit to ElementsProject/elements that referenced this pull request Jun 1, 2022
@bitcoin bitcoin locked as resolved and limited conversation to collaborators Aug 18, 2022
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8 participants