Commit graph

153 commits

Author SHA1 Message Date
Carl Dong
7b8e976cd5 miner: Add chainstate member to BlockAssembler 2021-03-24 15:40:56 -04:00
Carl Dong
eede0647b0 Revert "scripted-diff: Invoke CreateNewBlock with chainstate"
This reverts commit 46b7f29340.
2021-03-24 15:40:56 -04:00
Carl Dong
46b7f29340 scripted-diff: Invoke CreateNewBlock with chainstate
-BEGIN VERIFY SCRIPT-
find_regex='(\.|->)CreateNewBlock\(' \
    && git grep -l -E "$find_regex" -- src \
        | grep -v '^src/miner\.\(cpp\|h\)$' \
        | xargs sed -i -E 's@'"$find_regex"'@\0::ChainstateActive(), @g'
-END VERIFY SCRIPT-
2021-03-08 15:54:31 -05:00
MarcoFalke
828bb776d2
Merge #20750: [Bundle 2/n] Prune g_chainman usage in mempool-related validation functions
e8ae1db864 style-only: Make AcceptToMemoryPool signature readable (Carl Dong)
8f5c100064 style-only: Make CheckSequenceLock signature readable (Carl Dong)
8c824819c8 validation: Use *this in CChainState::LoadMempool (Carl Dong)
0a9a24d8c7 validation: Pass in chainstate to UpdateMempoolForReorg (Carl Dong)
7142018812 validation: Pass in chainstate to CTxMemPool::removeForReorg (Carl Dong)
71734c65dc validation: Pass in chain to ::TestLockPointValidity (Carl Dong)
120aaba9ac tree-wide: Fix erroneous AcceptToMemoryPool replacements (Carl Dong)
417dafc1ee validation: Remove old AcceptToMemoryPool w/o chainstate param (Carl Dong)
3704433c4f scripted-diff: Invoke ::AcceptToMemoryPool with chainstate (Carl Dong)
229bc37b5f validation: Pass in chainstate to ::AcceptToMemoryPool (Carl Dong)
d0da7ea57a validation: Pass in chainstate to ::LoadMempool (Carl Dong)
3a205c43dc validation: Pass in chainstate to AcceptToMemoryPoolWithTime (Carl Dong)
d8a816329c validation: Add chainstate member to MemPoolAccept (Carl Dong)
4c15942b79 validation: Pass in chainstate to ::CheckSequenceLocks (Carl Dong)
577b774d0c validation: Remove old CheckFinalTx w/o chain tip param (Carl Dong)
7031cf89db scripted-diff: Invoke ::CheckFinalTx with chain tip (Carl Dong)
d015eaa550 validation: Pass in chain tip to ::CheckFinalTx (Carl Dong)
252b489c9f validation: Pass in coins tip to CheckInputsFromMempoolAndCache (Carl Dong)
73a6d2b7be validation: Pass in chainstate to IsCurrentForFeeEstimation (Carl Dong)
d1f932b0b0 validation: Pass in coins cache to ::LimitMempoolSize (Carl Dong)

Pull request description:

  Overall PR: #20158 (tree-wide: De-globalize ChainstateManager)

  Note to reviewers:
  1. This bundle may _apparently_ introduce usage of `g_chainman` or `::Chain(state|)Active()` globals, but these are resolved later on in the overall PR. [Commits of overall PR](https://github.com/bitcoin/bitcoin/pull/20158/commits)
  2. There may be seemingly obvious local references to `ChainstateManager` or other validation objects which are not being used in callers of the current function in question, this is done intentionally to **_keep each commit centered around one function/method_** to ease review and to make the overall change systematic. We don't assume anything about our callers. Rest assured that once we are considering that particular caller in later commits, we will use the obvious local references. [Commits of overall PR](https://github.com/bitcoin/bitcoin/pull/20158/commits)
  3. When changing a function/method that has many callers (e.g. `LookupBlockIndex` with 55 callers), it is sometimes easier (and less error-prone) to use a scripted-diff. When doing so, there will be 3 commits in sequence so that every commit compiles like so:
  	1. Add `new_function`, make `old_function` a wrapper of `new_function`, divert all calls to `old_function` to `new_function` **in the local module only**
  	2. Scripted-diff to divert all calls to `old_function` to `new_function` **in the rest of the codebase**
  	3. Remove `old_function`

ACKs for top commit:
  glozow:
    reACK e8ae1db864 via `git range-diff 15f0042...e8ae1db`, only change is fixing ATMP call from conflict
  MarcoFalke:
    ACK e8ae1db864 📣

Tree-SHA512: 6af50f04940a69c5c3d3796a24f32f963fa02503cdc1155cc11fff832a99172b407cd163a19793080a5af98580f051b48195b62ec4a797ba2763b4883174153d
2021-02-20 09:21:45 +01:00
Carl Dong
4c15942b79 validation: Pass in chainstate to ::CheckSequenceLocks 2021-02-18 14:43:28 -05:00
Carl Dong
7031cf89db scripted-diff: Invoke ::CheckFinalTx with chain tip
-BEGIN VERIFY SCRIPT-
find_regex='\bCheckFinalTx\(' \
    && git grep -l -E "$find_regex" -- src \
        | grep -v '^src/validation\.\(cpp\|h\)$' \
        | xargs sed -i -E 's@'"$find_regex"'@\0::ChainActive().Tip(), @g'
-END VERIFY SCRIPT-
2021-02-18 14:43:28 -05:00
Jonas Schnelli
bedb8d88bc Avoid comparision of integers with different signs 2021-02-18 20:34:10 +01:00
MarcoFalke
cd66d8b1d8
Merge #20429: refactor: replace (sizeof(a)/sizeof(a[0])) with C++17 std::size
e829c9afbf refactor: replace sizeof(a)/sizeof(a[0]) by std::size (C++17) (Sebastian Falbesoner)
365539c846 refactor: init vectors via std::{begin,end} to avoid pointer arithmetic (Sebastian Falbesoner)
63d4ee1968 refactor: iterate arrays via C++11 range-based for loops if idx is not needed (Sebastian Falbesoner)

Pull request description:

  This refactoring PR picks up the idea of #19626 and replaces all occurences of `sizeof(x)/sizeof(x[0])` (or `sizeof(x)/sizeof(*x)`, respectively) with the now-available C++17 [`std::size`](https://en.cppreference.com/w/cpp/iterator/size)  (as [suggested by sipa](https://github.com/bitcoin/bitcoin/pull/19626#issuecomment-666487228)), making the macro `ARRAYLEN` obsolete.

  As preparation for this, two other changes are done to eliminate `sizeof(x)/sizeof(x[0])` usage:
  * all places where arrays are iterated via an index are changed to use C++11 range-based for loops If the index' only purpose is to access the array element (as [suggested by MarcoFalke](https://github.com/bitcoin/bitcoin/pull/19626#discussion_r463404541)).
  * `std::vector` initializations are done via `std::begin` and `std::end` rather than using pointer arithmetic to calculate the end (also [suggested by MarcoFalke](https://github.com/bitcoin/bitcoin/pull/20429#discussion_r567418821)).

ACKs for top commit:
  practicalswift:
    cr ACK e829c9afbf: patch looks correct
  fanquake:
    ACK e829c9afbf
  MarcoFalke:
    review ACK e829c9afbf 🌩

Tree-SHA512: b01d32c04b9e04d562b7717cae00a651ec9a718645047a90761be6959e0cc2adbd67494e058fe894641076711bb09c3b47a047d0275c736f0b2218e1ce0d193d
2021-02-18 07:53:37 +01:00
Amiti Uttarwar
a2d908e1da [test] Throw error instead of segfaulting in failure scenario
If the miner code is faulty and does not include any transactions in a block,
the code segfaults when it tries to access block transactions. Instead, add a
check that safely aborts the process.
2021-02-16 12:23:00 -08:00
Sebastian Falbesoner
e829c9afbf refactor: replace sizeof(a)/sizeof(a[0]) by std::size (C++17)
Removes the macro ARRAYLEN and also substitutes all other uses of the same
"sizeof(a)/sizeof(a[0])" pattern by std::size, available since C++17.
2021-01-31 17:35:16 +01:00
Sebastian Falbesoner
63d4ee1968 refactor: iterate arrays via C++11 range-based for loops if idx is not needed 2021-01-31 17:07:46 +01:00
MarcoFalke
fa0074e2d8
scripted-diff: Bump copyright headers
-BEGIN VERIFY SCRIPT-
./contrib/devtools/copyright_header.py update ./
-END VERIFY SCRIPT-
2020-12-31 09:45:41 +01:00
MarcoFalke
fa23308e9a
Remove gArgs global from CreateChainParams to aid testing 2020-09-29 10:20:05 +02:00
Vasil Dimov
fe42411b4b
test: move HasReason so it can be reused
Move the class `HasReason` from `miner_tests.cpp` to
`setup_common.h` so that it can be reused by other tests.
2020-09-17 14:45:17 +02:00
MarcoFalke
fa34587f1c
scripted-diff: Replace EnsureChainman with Assert in unit tests
-BEGIN VERIFY SCRIPT-
sed --regexp-extended -i -e 's/EnsureChainman\((m?_?node)\)\./Assert(\1.chainman)->/g' $(git grep -l EnsureChainman)
-END VERIFY SCRIPT-
2020-06-15 07:39:26 -04:00
Sebastian Falbesoner
b00266fe0c refactor: replace pointers by references within tx_verify.{h,cpp}
affects "prevHeights" parameter of the functions
- CalculateSequenceLocks()
- SequenceLocks()
2020-05-26 16:05:51 +02:00
MarcoFalke
fa1d97b256
validation: Make ProcessNewBlock*() members of ChainstateManager 2020-05-21 09:56:16 -04:00
MarcoFalke
faa92a2297
rpc: Remove mempool global from miner 2019-12-23 06:12:10 +07:00
MarcoFalke
6666ef13f1
test: Properly document blockinfo size in miner_tests
This fixes a typo in the test documentation
2019-12-20 22:24:17 +07:00
MarcoFalke
fa538813b1
scripted-diff: Replace ::mempool with m_node.mempool in tests
-BEGIN VERIFY SCRIPT-
 # tx pool member access (mempool followed by dot)
 sed --regexp-extended -i -e 's/(::)?\<mempool\>\.([a-zA-Z])/m_node.mempool->\2/g' $(git grep -l mempool ./src/test)
 # plain global (mempool not preceeded by dot, but followed by comma)
 sed --regexp-extended -i -e 's/([^\.])(::)?\<mempool\>,/\1*m_node.mempool,/g'     $(git grep -l mempool ./src/test)
-END VERIFY SCRIPT-
2019-11-15 13:40:14 -05:00
MarcoFalke
8888ad02e2
test: Replace recursive lock with locking annotations
Also, use m_node.mempool instead of the global
2019-11-15 13:40:08 -05:00
MarcoFalke
faec28252c
scripted-diff: test: Move setup_common to test library
-BEGIN VERIFY SCRIPT-
 # Move files
 for f in $(git ls-files src/test/lib/); do git mv $f src/test/util/; done
 git mv src/test/setup_common.cpp                     src/test/util/
 git mv src/test/setup_common.h                       src/test/util/
 # Replace Windows paths
 sed -i -e 's|\\setup_common|\\util\\setup_common|g' $(git grep -l '\\setup_common')
 sed -i -e 's|src\\test\\lib\\|src\\test\\util\\|g'  build_msvc/test_bitcoin/test_bitcoin.vcxproj
 # Everything else
 sed -i -e 's|/setup_common|/util/setup_common|g'    $(git grep -l 'setup_common')
 sed -i -e 's|test/lib/|test/util/|g'                $(git grep -l 'test/lib/')
 # Fix include guard
 sed -i -e 's|BITCOIN_TEST_SETUP_COMMON_H|BITCOIN_TEST_UTIL_SETUP_COMMON_H|g' ./src/test/util/setup_common.h
 sed -i -e 's|BITCOIN_TEST_LIB_|BITCOIN_TEST_UTIL_|g'                     $(git grep -l 'BITCOIN_TEST_LIB_')
-END VERIFY SCRIPT-
2019-11-06 11:56:41 -05:00
James O'Beirne
fae6ab6aed refactor: pcoinsTip -> CChainState::CoinsTip()
This aliasing makes subsequent commits easier to review; eventually CoinsTip()
will return the CCoinsViewCache managed by CChainState.
2019-08-06 13:13:06 -04:00
MarcoFalke
0000ff0aa7
txmempool: Remove unused default value MemPoolRemovalReason::UNKNOWN 2019-07-22 07:40:24 -04:00
practicalswift
9a841696c1 tests: Reduce compilation time and unneccessary recompiles by removing unused includes in tests 2019-06-26 20:37:48 +02:00
practicalswift
eca9767673 Make reasoning about dependencies easier by not including unused dependencies 2019-06-02 17:15:23 +02:00
MarcoFalke
fa3c651143
[refactor] interfaces: Add missing LockAnnotation for cs_main 2019-05-13 14:46:01 -04:00
Wladimir J. van der Laan
de5af41e35
Merge #15452: Replace CScriptID and CKeyID in CTxDestination with dedicated types
78e407ad0c GetKeyBirthTimes should return key ids, not destinations (Gregory Sanders)
70946e7fee Replace CScriptID and CKeyID in CTxDestination with dedicated types (Gregory Sanders)

Pull request description:

  The current usage seems to be an overloading of meanings. `CScriptID` is used in the wallet as a lookup key, as well as a destination, and `CKeyID` likewise. Instead, have all destinations be dedicated types.

  New types:
  `CScriptID`->`ScriptHash`
  `CKeyID`->`PKHash`

ACKs for commit 78e407:
  ryanofsky:
    utACK 78e407ad0c. Only changes are removing extra CScriptID()s and fixing the test case.
  Sjors:
    utACK 78e407a
  meshcollider:
    utACK 78e407ad0c

Tree-SHA512: 437f59fc3afb83a40540da3351507aef5aed44e3a7f15b01ddad6226854edeee762ff0b0ef336fe3654c4cd99a205cef175211de8b639abe1130c8a6313337b9
2019-05-09 18:54:43 +02:00
James O'Beirne
631940aab2 scripted-diff: replace chainActive -> ::ChainActive()
Though at the moment ChainActive() simply references `g_chainstate.m_chain`,
doing this change now clears the way for multiple chainstate usage and allows
us to script the diff.

-BEGIN VERIFY SCRIPT-
git grep -l "chainActive" | grep -E '(h|cpp)$' | xargs sed -i '/chainActive =/b; /extern CChain& chainActive/b; s/\(::\)\{0,1\}chainActive/::ChainActive()/g'
-END VERIFY SCRIPT-
2019-05-03 15:02:54 -04:00
Gregory Sanders
70946e7fee Replace CScriptID and CKeyID in CTxDestination with dedicated types 2019-04-29 10:15:23 -04:00
MarcoFalke
faf400077d
scripted-diff: Bump copyright headers in test, bench
-BEGIN VERIFY SCRIPT-
./contrib/devtools/copyright_header.py update ./src/bench/
./contrib/devtools/copyright_header.py update ./src/test/
-END VERIFY SCRIPT-
2019-04-11 13:34:43 -04:00
MarcoFalke
fa821904bf
scripted-diff: Rename test_bitcoin to test/setup_common
-BEGIN VERIFY SCRIPT-
sed -i --regexp-extended -e 's/test_bitcoin\.(h|cpp)/setup_common.\1/g' $(git grep -l test_bitcoin)
git mv ./src/test/test_bitcoin.h   ./src/test/setup_common.h
git mv ./src/test/test_bitcoin.cpp ./src/test/setup_common.cpp
sed -i -e 's/BITCOIN_TEST_TEST_BITCOIN_H/BITCOIN_TEST_SETUP_COMMON_H/g' ./src/test/setup_common.h
-END VERIFY SCRIPT-
2019-04-11 10:12:36 -04:00
MarcoFalke
fafe941bdd
test: Add missing validation locks 2018-12-17 14:27:29 -05:00
lucash-dev
ed61abedb2 Removed implicit CTransaction constructor from tests 2018-12-11 19:43:35 -08:00
Jim Posen
2068f089c8 scripted-diff: Move util files to separate directory.
-BEGIN VERIFY SCRIPT-
mkdir -p src/util
git mv src/util.h src/util/system.h
git mv src/util.cpp src/util/system.cpp
git mv src/utilmemory.h src/util/memory.h
git mv src/utilmoneystr.h src/util/moneystr.h
git mv src/utilmoneystr.cpp src/util/moneystr.cpp
git mv src/utilstrencodings.h src/util/strencodings.h
git mv src/utilstrencodings.cpp src/util/strencodings.cpp
git mv src/utiltime.h src/util/time.h
git mv src/utiltime.cpp src/util/time.cpp

sed -i 's/<util\.h>/<util\/system\.h>/g' $(git ls-files 'src/*.h' 'src/*.cpp')
sed -i 's/<utilmemory\.h>/<util\/memory\.h>/g' $(git ls-files 'src/*.h' 'src/*.cpp')
sed -i 's/<utilmoneystr\.h>/<util\/moneystr\.h>/g' $(git ls-files 'src/*.h' 'src/*.cpp')
sed -i 's/<utilstrencodings\.h>/<util\/strencodings\.h>/g' $(git ls-files 'src/*.h' 'src/*.cpp')
sed -i 's/<utiltime\.h>/<util\/time\.h>/g' $(git ls-files 'src/*.h' 'src/*.cpp')

sed -i 's/BITCOIN_UTIL_H/BITCOIN_UTIL_SYSTEM_H/g' src/util/system.h
sed -i 's/BITCOIN_UTILMEMORY_H/BITCOIN_UTIL_MEMORY_H/g' src/util/memory.h
sed -i 's/BITCOIN_UTILMONEYSTR_H/BITCOIN_UTIL_MONEYSTR_H/g' src/util/moneystr.h
sed -i 's/BITCOIN_UTILSTRENCODINGS_H/BITCOIN_UTIL_STRENCODINGS_H/g' src/util/strencodings.h
sed -i 's/BITCOIN_UTILTIME_H/BITCOIN_UTIL_TIME_H/g' src/util/time.h

sed -i 's/ util\.\(h\|cpp\)/ util\/system\.\1/g' src/Makefile.am
sed -i 's/utilmemory\.\(h\|cpp\)/util\/memory\.\1/g' src/Makefile.am
sed -i 's/utilmoneystr\.\(h\|cpp\)/util\/moneystr\.\1/g' src/Makefile.am
sed -i 's/utilstrencodings\.\(h\|cpp\)/util\/strencodings\.\1/g' src/Makefile.am
sed -i 's/utiltime\.\(h\|cpp\)/util\/time\.\1/g' src/Makefile.am

sed -i 's/-> util ->/-> util\/system ->/' test/lint/lint-circular-dependencies.sh
sed -i 's/src\/util\.cpp/src\/util\/system\.cpp/g' test/lint/lint-format-strings.py test/lint/lint-locale-dependence.sh
sed -i 's/src\/utilmoneystr\.cpp/src\/util\/moneystr\.cpp/g' test/lint/lint-locale-dependence.sh
sed -i 's/src\/utilstrencodings\.\(h\|cpp\)/src\/util\/strencodings\.\1/g' test/lint/lint-locale-dependence.sh
sed -i 's/src\\utilstrencodings\.cpp/src\\util\\strencodings\.cpp/' build_msvc/libbitcoinconsensus/libbitcoinconsensus.vcxproj
-END VERIFY SCRIPT-
2018-11-04 22:46:07 -08:00
MarcoFalke
fa511e8dad
Pass tx pool reference into CheckSequenceLocks 2018-09-11 12:08:17 -04:00
Ben Woosley
da74db0940
Drop unused GetType() from CSizeComputer 2018-09-11 00:58:05 -04:00
Wladimir J. van der Laan
888acefa5e
Merge #13792: tx pool: Avoid passing redundant hash into addUnchecked (scripted-diff)
fa587773e5 scripted-diff: Remove unused first argument to addUnchecked (MarcoFalke)
fe5c49766c tx pool: Use the entry's hash instead of the one passed to addUnchecked (MarcoFalke)
ddd395f968 Mark CTxMemPoolEntry members that should not be modified const (MarcoFalke)

Pull request description:

  Several years ago the transaction hash was not cached. For optimization the hash was instead passed into `addUnchecked` to avoid re-calculating it. See f77654a0e9

  Passing in the hash is now redundant and the argument can safely be removed.

Tree-SHA512: 0206b65c7a014295f67574120e8c5397bf1b1bd70c918ae1360ab093676f7f89a6f084fd2c7000a141baebfe63fe6f515559e38c4ac71810ba64f949f9c0467f
2018-08-29 16:30:58 +02:00
MarcoFalke
dd34204611
Merge #13769: Mark single-argument constructors "explicit"
1ac3c983bf Mark single-argument constructors "explicit" (practicalswift)

Pull request description:

  Mark single-argument constructors `explicit`.

  Rationale:
  * Avoid unexpected implicit promotions.

  From the developer notes:

  > **By default, declare single-argument constructors explicit.**
  > Rationale: This is a precaution to avoid unintended conversions that might arise when single-argument constructors are used as implicit conversion functions.

Tree-SHA512: 7901ed5be808c9d0ecb5ca501e1bc0395987fe1b7941b8548cebac2ff08a14f7dab61fab374a69b9ba29a9295a04245c814325c7f95b97ae558af0780f111dfa
2018-08-27 13:33:04 -04:00
practicalswift
9e0a514112 Add compile time checking for all cs_main runtime locking assertions 2018-08-26 00:25:28 +02:00
Wladimir J. van der Laan
78dae8cacc
Merge #13780: 0.17: Pre-branch maintenance
3fc20632a3 qt: Set BLOCK_CHAIN_SIZE = 220 (DrahtBot)
2b6a2f4a28 Regenerate manpages (DrahtBot)
eb7daf4d60 Update copyright headers to 2018 (DrahtBot)

Pull request description:

  Some trivial maintenance to avoid having to do it again after the 0.17 branch off.

  (The scripts to do this are in `./contrib/`)

Tree-SHA512: 16b2af45e0351b1c691c5311d48025dc6828079e98c2aa2e600dc5910ee8aa01858ca6c356538150dc46fe14c8819ed8ec8e4ec9a0f682b9950dd41bc50518fa
2018-08-08 13:55:27 +02:00
MarcoFalke
fa587773e5
scripted-diff: Remove unused first argument to addUnchecked
-BEGIN VERIFY SCRIPT-
git grep -l addUnchecked | xargs sed --regexp-extended -i -e 's/addUnchecked\([^)][^,]+,\s*/addUnchecked(/g'
-END VERIFY SCRIPT-
2018-07-30 09:09:32 -04:00
MarcoFalke
fa5ed4f8d2
refactor: Avoid locking tx pool cs thrice 2018-07-29 08:04:06 -04:00
DrahtBot
eb7daf4d60 Update copyright headers to 2018 2018-07-27 07:15:02 -04:00
practicalswift
1ac3c983bf Mark single-argument constructors "explicit" 2018-07-26 17:15:32 +02:00
practicalswift
99be644966 Remove redundant unused variables 2018-07-18 09:39:31 +02:00
practicalswift
c3f34d06be Make it clear which functions that are intended to be translation unit local
Do not share functions that are meant to be translation unit local with
other translation units. Use internal linkage for those consistently.
2018-05-03 21:47:40 +02:00
Karl-Johan Alm
c55aa4f27d
test: Fix sign for expected values
A number of BOOST_CHECK_EQUAL calls would result in warnings about signs.
2018-04-11 13:39:41 +09:00
Akira Takizawa
595a7bab23 Increment MIT Licence copyright header year on files modified in 2017 2018-01-03 02:26:56 +09:00
Pieter Wuille
d9fdac130a
Merge #11824: Block ActivateBestChain to empty validationinterface queue
97d2b09c12 Add helper to wait for validation interface queue to catch up (Matt Corallo)
36137497f1 Block ActivateBestChain to empty validationinterface queue (Matt Corallo)
5a933cefcc Add an interface to get the queue depth out of CValidationInterface (Matt Corallo)
a99b76f269 Require no cs_main lock for ProcessNewBlock/ActivateBestChain (Matt Corallo)
a734896038 Avoid cs_main in net_processing ActivateBestChain calls (Matt Corallo)
66aa1d58a1 Refactor ProcessGetData in anticipation of avoiding cs_main for ABC (Matt Corallo)
818075adac Create new mutex for orphans, no cs_main in PLV::BlockConnected (Matt Corallo)

Pull request description:

  This should fix #11822.

  It ended up bigger than I hoped for, but its not too gnarly. Note that "
  Require no cs_main lock for ProcessNewBlock/ActivateBestChain" is mostly pure code-movement.

Tree-SHA512: 1127688545926f6099449dca6a4e6609eefc3abbd72f1c66e03d32bd8c7b31e82097d8307822cfd1dec0321703579cfdd82069cab6e17b1024e75eac694122cb
2017-12-29 01:51:23 -08:00