[0.21] Speedy trial activation for Taproot

achow101 commented at 4:07 pm on April 15, 2021: member

Backport of #21377 and #21686

tests: pull ComputeBlockVersion test into its own function

The intent here is to allow checking ComputeBlockVersion behaviour with
each deployment, rather than only testdummy on mainnet. This commit does
the trivial refactoring component of that change.

Github-Pull: #21377
Rebased-From: 63879f0a4760c0c0f784029849cb5d21ee088abb

2e9e7f4329

tests: test ComputeBlockVersion for all deployments

This generalises the ComputeBlockVersion test so that it can apply to
any activation parameters we might set, and checks all the parameters
set for each deployment on each chain, to simultaneously ensure that the
deployments we have configured work sensibly, and that the test code
does not suffer bitrot in the event that all interesting deployments
are buried.

Github-Pull: #21377
Rebased-From: 593274445004506c921d5d851361aefb3434d744

1c0164544c

tests: clean up versionbits test

Simplify the versionbits unit test slightly to make the next set of
changes a little easier to follow.

Github-Pull: #21377
Rebased-From: 9e6b65f6fa205eee5c3b99343988adcb8d320460

f9517e6014

versionbits: Add support for delayed activation

Github-Pull: #21377
Rebased-From: 73d4a706393e6dbd6b6d6b6428f8d3233ac0a2d8

4cab84cfdf

achow101 renamed this:
~~[0.2] Speedy trial activation for Taproot~~
[0.21] Speedy trial activation for Taproot
on Apr 15, 2021

DrahtBot added the label Backport on Apr 15, 2021

in src/test/versionbits_tests.cpp:274 in 37c255cdeb outdated

266@@ -226,6 +267,13 @@ BOOST_AUTO_TEST_CASE(versionbits_test)
267         // Make sure that no deployment tries to set an invalid bit.
268         BOOST_CHECK_EQUAL(bitmask & ~(uint32_t)VERSIONBITS_TOP_MASK, bitmask);
269 
270+        // Check min_activation_height is on a retarget boundary
271+        BOOST_CHECK_EQUAL(mainnetParams.vDeployments[i].min_activation_height % mainnetParams.nMinerConfirmationWindow, 0);
272+        // Check min_activation_height is 0 for ALWAYS_ACTIVE and never active deployments
273+        if (mainnetParams.vDeployments[i].nStartTime == Consensus::BIP9Deployment::ALWAYS_ACTIVE || mainnetParams.vDeployments[i].nStartTime == Consensus::BIP9Deployment::NEVER_ACTIVE) {
274+            BOOST_CHECK_EQUAL(mainnetParams.vDeployments[i].min_activation_height, 0);

MarcoFalke commented at 5:28 pm on April 15, 2021:

0            BOOST_CHECK_EQUAL(mainnetParams.vDeployments[i].min_activation_height, 0U);

Looks like you are hitting some stupid compiler error

achow101 commented at 5:56 pm on April 15, 2021:

Fixed.

achow101 force-pushed on Apr 15, 2021

Sjors commented at 6:14 pm on April 15, 2021: member

~tACK 724e4948004c8127f093db90f9d78e6ed9e46541~ on Ubuntu

I verified as follows:

0git checkout origin/0.21
1git checkout -b speedy-trial-backport
2git cherry-pick 63879f0a4760c0c0f784029849cb5d21ee088abb^..ffe33dfbd4c3b11e3475b022b6c1dd077613de79
3git cherry-pick f979b3237f1cfc28f9c4ccb07beab558d5357a55
4git diff 724e4948004c8127f093db90f9d78e6ed9e46541
5src/test/test_bitcoin --run_test=versionbits_tests

Git diff only shows a difference in the trailing U for this test (presumably related to #21701 (review)): BOOST_CHECK_EQUAL(mainnetParams.vDeployments[i].min_activation_height, 0U);

I had manually resolve a conflict for dd07e6da48040dc7eae46bc7941db48d98a669fd.

I also managed to spin up the node and see the softfork as “defined” in getblockchaininfo.

I’m unable to reproduce the CI failure on macOS 11.2.3 with homebrew Boost 1.75.0. It doesn’t happen for me with depends either.

achow101 commented at 10:45 pm on April 15, 2021: member

I don’t know why CI is having a hard time building this. I am able to do a gitian build of this branch, so it should be working.

fanquake added this to the milestone 0.21.1 on Apr 16, 2021

in src/test/versionbits_tests.cpp:271 in 724e494800 outdated

266@@ -226,6 +267,13 @@ BOOST_AUTO_TEST_CASE(versionbits_test)
267         // Make sure that no deployment tries to set an invalid bit.
268         BOOST_CHECK_EQUAL(bitmask & ~(uint32_t)VERSIONBITS_TOP_MASK, bitmask);
269 
270+        // Check min_activation_height is on a retarget boundary
271+        BOOST_CHECK_EQUAL(mainnetParams.vDeployments[i].min_activation_height % mainnetParams.nMinerConfirmationWindow, 0);

fanquake commented at 0:53 am on April 16, 2021:

0        BOOST_CHECK_EQUAL(mainnetParams.vDeployments[i].min_activation_height % mainnetParams.nMinerConfirmationWindow, 0U);

achow101 commented at 0:59 am on April 16, 2021:

Done

in src/test/versionbits_tests.cpp:274 in 724e494800 outdated

266@@ -226,6 +267,13 @@ BOOST_AUTO_TEST_CASE(versionbits_test)
267         // Make sure that no deployment tries to set an invalid bit.
268         BOOST_CHECK_EQUAL(bitmask & ~(uint32_t)VERSIONBITS_TOP_MASK, bitmask);
269 
270+        // Check min_activation_height is on a retarget boundary
271+        BOOST_CHECK_EQUAL(mainnetParams.vDeployments[i].min_activation_height % mainnetParams.nMinerConfirmationWindow, 0);
272+        // Check min_activation_height is 0 for ALWAYS_ACTIVE and never active deployments
273+        if (mainnetParams.vDeployments[i].nStartTime == Consensus::BIP9Deployment::ALWAYS_ACTIVE || mainnetParams.vDeployments[i].nStartTime == Consensus::BIP9Deployment::NEVER_ACTIVE) {
274+            BOOST_CHECK_EQUAL(mainnetParams.vDeployments[i].min_activation_height, 0U);

fanquake commented at 0:54 am on April 16, 2021:

0            BOOST_CHECK_EQUAL(mainnetParams.vDeployments[i].min_activation_height, 0);

achow101 commented at 0:59 am on April 16, 2021:

Done

in src/test/versionbits_tests.cpp:317 in 724e494800 outdated

322+    BOOST_REQUIRE(nStartTime >= 0);
323+    BOOST_REQUIRE(nTimeout <= std::numeric_limits<uint32_t>::max() || nTimeout == Consensus::BIP9Deployment::NO_TIMEOUT);
324+    BOOST_REQUIRE(0 <= bit && bit < 32);
325+    BOOST_REQUIRE(((1 << bit) & VERSIONBITS_TOP_MASK) == 0);
326+    BOOST_REQUIRE(min_activation_height >= 0);
327+    BOOST_REQUIRE_EQUAL(min_activation_height % params.nMinerConfirmationWindow, 0);

fanquake commented at 0:54 am on April 16, 2021:

0    BOOST_REQUIRE_EQUAL(min_activation_height % params.nMinerConfirmationWindow, 0U);

achow101 commented at 0:59 am on April 16, 2021:

Done

fanquake commented at 0:55 am on April 16, 2021: member

These 3 changes will fix the failing CIs.

tests: test versionbits delayed activation

Github-Pull: #21377
Rebased-From: dd85d5411c1702c8ae259610fe55050ba212e21e

71917e01eb

fuzz: test versionbits delayed activation

Github-Pull: #21377
Rebased-From: dd07e6da48040dc7eae46bc7941db48d98a669fd

b529222ad1

versionbits: Add explicit NEVER_ACTIVE deployments

Previously we used deployments that would timeout prior to Bitcoin's
invention, which allowed the deployment to still be activated in unit
tests. This switches those deployments to be truly never active.

Github-Pull: #21377
Rebased-From: 55ac5f568a3b73d6f1ef4654617fb76e8bcbccdf

3acf0379e0

versionbits: simplify state transitions

This removes the DEFINED->FAILED transition and changes the
STARTED->FAILED transition to only occur if signalling didn't pass the
threshold. This ensures that it is always possible for activation to
occur, no matter what settings are chosen, or the speed at which blocks
are found.

Github-Pull: #21377
Rebased-From: f054f6bcd2c2ce5fea84cf8681013f85a444e7ea

600357306e

chainparams: drop versionbits threshold to 90% for mainnnet and signet

Github-Pull: #21377
Rebased-From: ffe33dfbd4c3b11e3475b022b6c1dd077613de79

ec7824396b

Add mainnet and testnet taproot activation params

Github-Pull: #21686
Rebased-From: f979b3237f1cfc28f9c4ccb07beab558d5357a55

cbd64c3a28

achow101 force-pushed on Apr 16, 2021

instagibbs commented at 2:30 am on April 16, 2021: member

cherry-pick ACK https://github.com/bitcoin/bitcoin/pull/21701/commits/cbd64c3a28a7466f421477daadc6e6e6b69b898a

jnewbery commented at 8:18 am on April 16, 2021: member

ACK cbd64c3a28a7466f421477daadc6e6e6b69b898a

Repeated the rebase/cherry-pick myself and the only differences were the unsigned/signed fixups here: #21701#pullrequestreview-637244766.

Sjors commented at 8:39 am on April 16, 2021: member

tACK cbd64c3

MarcoFalke commented at 9:12 am on April 16, 2021: member

cherry-pick-only ACK cbd64c3a28a7466f421477daadc6e6e6b69b898a 🌾

Signature:

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Timestamp of file with hash 1d1c8419f375b140d9bb77c1f31aa2bb76a54e095fe73d7ba926604fb50abc88 -

MarcoFalke merged this on Apr 16, 2021

MarcoFalke closed this on Apr 16, 2021

ajtowns commented at 10:06 am on April 16, 2021: member

Post-merge ACK cbd64c3a28a7466f421477daadc6e6e6b69b898a – checked fuzzer compiles at each step, visually compared new patches with originals, checked original patches are in master

DrahtBot locked this on Aug 16, 2022

[0.21] Speedy trial activation for Taproot #21701