Commit graph

19496 commits

Author SHA1 Message Date
João Barbosa
6440e61375 qa: Drop RPC connection if --usecli 2019-02-06 00:04:28 +00:00
MarcoFalke
5029e94f85
Merge #14519: tests: add utility to easily profile node performance with perf
13782b8ba8 docs: add perf section to developer docs (James O'Beirne)
58180b5fd4 tests: add utility to easily profile node performance with perf (James O'Beirne)

Pull request description:

  Adds a context manager to easily (and selectively) profile node performance during functional test execution using `perf`.

  While writing some tests, I encountered some odd bitcoind slowness. I wrote up a utility (`TestNode.profile_with_perf`) that generates performance diagnostics for a node by running `perf` during the execution of a particular region of test code.

  `perf` usage is detailed in the excellent (and sadly unmerged) https://github.com/bitcoin/bitcoin/pull/12649; all due props to @eklitzke.

  ### Example

  ```python
  with node.profile_with_perf("large-msgs"):
      for i in range(200):
          node.p2p.send_message(some_large_msg)
      node.p2p.sync_with_ping()
  ```

  This generates a perf data file in the test node's datadir (`/tmp/testtxmpod0y/node0/node-0-TestName-large-msgs.perf.data`).

  Running `perf report` generates nice output about where the node spent most of its time while running that part of the test:

  ```bash
  $ perf report -i /tmp/testtxmpod0y/node0/node-0-TestName-large-msgs.perf.data --stdio \
    | c++filt \
    | less

  # To display the perf.data header info, please use --header/--header-only options.
  #
  #
  # Total Lost Samples: 0
  #
  # Samples: 135  of event 'cycles:pp'
  # Event count (approx.): 1458205679493582
  #
  # Children      Self  Command          Shared Object        Symbol
  # ........  ........  ...............  ...................  ........................................................................................................................................................................................................................................................................
  #
      70.14%     0.00%  bitcoin-net      bitcoind             [.] CNode::ReceiveMsgBytes(char const*, unsigned int, bool&)
                  |
                  ---CNode::ReceiveMsgBytes(char const*, unsigned int, bool&)

      70.14%     0.00%  bitcoin-net      bitcoind             [.] CNetMessage::readData(char const*, unsigned int)
                  |
                  ---CNetMessage::readData(char const*, unsigned int)
                     CNode::ReceiveMsgBytes(char const*, unsigned int, bool&)

      35.52%     0.00%  bitcoin-net      bitcoind             [.] std::vector<char, zero_after_free_allocator<char> >::_M_fill_insert(__gnu_cxx::__normal_iterator<char*, std::vector<char, zero_after_free_allocator<char> > >, unsigned long, char const&)
                  |
                  ---std::vector<char, zero_after_free_allocator<char> >::_M_fill_insert(__gnu_cxx::__normal_iterator<char*, std::vector<char, zero_after_free_allocator<char> > >, unsigned long, char const&)
                     CNetMessage::readData(char const*, unsigned int)
                     CNode::ReceiveMsgBytes(char const*, unsigned int, bool&)

  ...
  ```

Tree-SHA512: 9ac4ceaa88818d5eca00994e8e3c8ad42ae019550d6583972a0a4f7b0c4f61032e3d0c476b4ae58756bc5eb8f8015a19a7fc26c095bd588f31d49a37ed0c6b3e
2019-02-05 17:40:16 -05:00
MarcoFalke
baf125b31d
Merge #15332: [Docs] Small updates to getrawtransaction description
47012391ec [Docs] Small updates to getrawtransaction description (Amiti Uttarwar)

Pull request description:

  As per review comments on https://github.com/bitcoin/bitcoin/pull/15159

Tree-SHA512: 0bbbe956b47d177f7e67c5ab2048287783327d9e07a679d64d79aee3ea8633e769f75b59d3dbce517924ba5d64d6c44f26bf49e16d40612463e460ad1a238129
2019-02-05 17:18:40 -05:00
MarcoFalke
9e7f8f6c82
Merge #15327: tests: Make test updatecoins_simulation_test deterministic
ef0b01217a tests: Make updatecoins_simulation_test deterministic (practicalswift)

Pull request description:

  Make test `updatecoins_simulation_test` deterministic.

  Can be verified using `contrib/test_deterministic_coverage.sh` introduced in #15296.

  Related:
  * #15296: "tests: Add script checking for deterministic line coverage in unit tests"
  * #15324: "test: Make bloom tests deterministic"
  * #14343: "coverage reports non-deterministic"

Tree-SHA512: 3466e28a42dd3735effb8542044d88e8350a470729d4a4f02abce9d6367de6568d698131469ba154d3dc76d448bacb360b7aefd066bb5b91408c0be375dd3ecb
2019-02-05 17:14:30 -05:00
MarcoFalke
9b63c436a6
Merge #15203: Fix issue #9683 "gui, wallet: random abort (segmentation fault)
364cff1cab Fix issue #9683 "gui, wallet: random abort (segmentation fault) running master/HEAD". (Chris Moore)

Pull request description:

  Patch taken from @ryanofsky's comment https://github.com/bitcoin/bitcoin/issues/9683#issuecomment-448035913.

  [MarcoFalke wrote](https://github.com/bitcoin/bitcoin/issues/9683#issuecomment-454066004):
  > Mind to submit this patch as a pull request?

  So that's what I'm doing.

  I was regularly seeing crashes on startup before applying this patch and haven't seen a single crash on startup since applying it almost a month ago.

Tree-SHA512: 3bbb2291cdf03ab7e7b5b796df68d76272491e35d473a89f4550065554c092f867659a7b8d7a1a91461ae4dc9a3b13b72541eafdbd732536463e9f3cf82300c8
2019-02-05 16:39:18 -05:00
MeshCollider
30e799a5f7
Merge #15297: wallet: Releases dangling files on BerkeleyEnvironment::Close
d3bf3b930 qa: Test .walletlock file is closed (João Barbosa)
2f8b8f479 wallet: Close wallet env lock file (João Barbosa)
8602a1e6a wallet: Close dbenv error file db.log (João Barbosa)

Pull request description:

  This PR closes `db.log` and removes `.walletlock` files when `BerkeleyEnvironment` is closed.

  Fixes https://github.com/bitcoin/bitcoin/issues/15291#issuecomment-459131886.

Tree-SHA512: 05d8b027feea914e0ba873e75d117857473d1fd7b400e41bd473d638171fa39d5be048990bf685dc0807f7d92418579b763056dc2a6dcf6b96777d5688ddee04
2019-02-06 10:10:51 +13:00
Wladimir J. van der Laan
3a573fd46c
Merge #14922: windows: Set _WIN32_WINNT to 0x0601 (Windows 7)
0164b0f5cf build: Remove WINVER pre define in Makefile.leveldb.inlcude (Chun Kuan Lee)
d0522ec94e Drop defunct Windows compat fixes (Ben Woosley)
d8a2992067 windows: Call SetProcessDEPPolicy directly (Chun Kuan Lee)
1bd9ffdd44 windows: Set _WIN32_WINNT to 0x0601 (Windows 7) (Chun Kuan Lee)

Pull request description:

  The current minimum support Windows version is Vista. So set it to 0x0600
  5a88def8ad/mingw-w64-headers/include/sdkddkver.h (L19)

Tree-SHA512: 38e2afc79426ae547131c8ad3db2e0a7f54a95512f341cfa0c06e4b2fe79521ae67d2795ef96b0192e683e4f1ba6183c010d7b4b8d6b3e68b9bf48c374c59e7d
2019-02-05 18:15:01 +01:00
MarcoFalke
fc21bb4e35
Merge #15245: remove deprecated mentions of signrawtransaction from fundraw help
851380ce17 remove deprecated mentions of signrawtransaction from fundraw help (Gregory Sanders)

Pull request description:

  RPC call has been removed as of 0.17.99.

Tree-SHA512: a6a12a0e4572acd9b532c1719be85ed6f29d1c1a28f9ce691398528b8dde4fb4a3222b8f68632fcb1a8eddfe2d31e96d5efd5bc51c041af8e7cb99b61ca3a167
2019-02-05 10:48:36 -05:00
MarcoFalke
bbdcc0b0ff
Merge #15342: Suggested wallet code cleanups from #14711
aebafd0edf Rename Chain getLocator -> getTipLocator (Russell Yanofsky)
2c1fbaa771 Drop redundant get_value_or (Russell Yanofsky)
84adb206fc Fix ScanForWalletTransactions start_block comment (Russell Yanofsky)
2efa66b464 Document rescanblockchain returned stop_height being null (Russell Yanofsky)
db2d093233 Add suggested rescanblockchain comments (Russell Yanofsky)
a8d645c934 Update ScanForWalletTransactions result comment (Russell Yanofsky)
95a812b599 Rename ScanResult stop_block field (Russell Yanofsky)

Pull request description:

  This implements suggested changes from #14711 review comments that didn't make make it in before merging.

  There are no changes in behavior in this PR, just documentation updates, simplifications, and variable renames.

Tree-SHA512: 39f1a5718195732b70b5e427c3b3e4295ea5af6328a5991763a422051212dfb95383186db0c0504ce2c2782fb61998dfd2fe9851645b7cb4e75d849049483cc8
2019-02-05 10:38:13 -05:00
Wladimir J. van der Laan
e50853501b
Merge #15347: Fix build after pr 15266 merged
e1b6436aad Fix build after pr 15266 merged (Hennadii Stepanov)

Pull request description:

  Ref: #15266

Tree-SHA512: 6647264c3e3d94f0f10dc3bed1b82dfe8ed1192906270b0bb79f4d018807e06cb42286c86ced7fee0e2b38284739657336672c5a30650b6473ffafd65c315349
2019-02-05 03:36:47 +01:00
Chris Moore
364cff1cab Fix issue #9683 "gui, wallet: random abort (segmentation fault) running master/HEAD".
Patch taken from @ryanofsky's comment
  https://github.com/bitcoin/bitcoin/issues/9683#issuecomment-448035913
and refined according to
  https://github.com/bitcoin/bitcoin/pull/15203#discussion_r249168229
2019-02-04 20:14:26 -04:00
Hennadii Stepanov
e1b6436aad
Fix build after pr 15266 merged 2019-02-05 01:27:39 +02:00
MarcoFalke
452acee4da
Merge #15266: memory: Construct globals on first use
77777c5624 log: Construct global logger on first use (MarcoFalke)

Pull request description:

  The (de)initialization order is not well defined in C++, so generally it is not safe to use globals as the (de/con)structor of one global could use the (de/con)structor of another global before/after it has been (con/de)structed.

  Specifically this fixes:
  * `g_logger` might not be initialized on the first use, so do that. (Fixes #15111)

Tree-SHA512: eb9c22f4baf31ebc5b0b9ee6a51d1354bae1f0df186cc0ce818b4483c7b5a7f90268d2b549ee96b4c57f8ef36ab239dc6497f74f3e2ef166038f7437c368297d
2019-02-04 14:26:07 -05:00
Wladimir J. van der Laan
bfbe42585e
Merge #15345: net: Correct comparison of addr count
107623c26c net: Correct comparison of addr count (Carl Dong)

Pull request description:

  `LOCAL_NONE` is supposed to be an enum indicating the `nScore` of a
  `LocalServiceInfo` rather than the count of an addr in `mapLocalHost`.

Tree-SHA512: a47a0859dd11c991d75b54e96b08c502e3d235f7a6522a2355053f377d05e7853483996919292f458d917a561b23951e6945d6bf0ff5a2f29513c477c640bdd2
2019-02-04 20:05:41 +01:00
Wladimir J. van der Laan
76deb30550
Merge #12255: Update bitcoin.service to conform to init.md
bad1716c6d init: Modify docs and add release note for 12255 (Carl Dong)
b0c7b54d0c init: Use systemd automatic directory creation (Carl Dong)

Pull request description:

  - `-datadir` option specified.
  - Ask systemd to create and set the right mode for PID directory, configuration directory, and data directory.
  - Tell systemd our group so it will set the right owner for aforementioned directories.

  More information: https://www.freedesktop.org/software/systemd/man/systemd.exec.html

Tree-SHA512: a6fad1efa2be433c1fdd863df3ff232736ed709a9e281f51a003b40987d8c213dc64a52bc13a19c85bf85680e78f0be112ecaf32ac274b1ff93bac84a1208845
2019-02-04 19:51:28 +01:00
João Barbosa
d3bf3b930d qa: Test .walletlock file is closed 2019-02-04 18:50:21 +00:00
Carl Dong
107623c26c net: Correct comparison of addr count
LOCAL_NONE is supposed to be an enum indicating the score of a
LocalServiceInfo rather than the count of an addr in mapLocalHost.
2019-02-04 13:12:20 -05:00
Amiti Uttarwar
47012391ec [Docs] Small updates to getrawtransaction description 2019-02-04 08:32:08 -08:00
Wladimir J. van der Laan
cf8aa5c76a
Merge #15339: qt: Pre-0.18 split-off translations update
df8a7d3408 qt: Pre-0.18 split-off translations update (Wladimir J. van der Laan)

Pull request description:

  - Update transifex slug
  - Mention update of MSVC build in `doc/translation_process.md`
  - Do a `make translate` to update English translations
  - Pull current translations from transifex

Tree-SHA512: 2f3102ff64167d5feaf484b2c45cd6aa1d06ac4f370107f0db5575fde023b3dfaea07e7178978bfff111fa80dbe4e56bd05b5774fc7c111b5273d33b3dcd44ad
2019-02-04 17:23:20 +01:00
MarcoFalke
70d06eb857
Merge #15328: travis: Revert "Run extended tests once daily"
fa6b7b9cf6 travis: Revert "Run extended tests once daily" (MarcoFalke)

Pull request description:

  Now that the extended tests are only pruning and dbcrash, both which are too long [1] to run on travis, we can revert this commit. All tests other than those two are still run for every travis pull request or cron run.

  [1] https://travis-ci.org/bitcoin/bitcoin/jobs/487615211#L2930

Tree-SHA512: dff293823336677380f6e804379125687869a4b547c968f0b6aae80daee1cbca2cfb845b63de7135f31fbe2383d8d7654694b6dc8a6a6b7d02d57ee8ff107527
2019-02-04 11:14:07 -05:00
MarcoFalke
6a5feb7d82
Merge #15325: msvc: Fix silent merge conflict between #13926 and #14372
bef8fdd6e2 msvc: Fix silent merge conflict between #13926 and #14372 (ken2812221)

Pull request description:

  The bitcoin-wallet.exe would have to link with libsecp256k1 after we build libsecp256k1 in project.

Tree-SHA512: cb3fafa301f39121f5d26ac8ac6009c9665fcad1061dbf14ba013104870abe5413ac57c97c97df12b6ba2ad709b776c51aeec20d41f3ae01d3460a5e18f40eec
2019-02-04 11:05:59 -05:00
Gregory Sanders
851380ce17 remove deprecated mentions of signrawtransaction from fundraw help 2019-02-04 10:26:46 -05:00
Wladimir J. van der Laan
df8a7d3408 qt: Pre-0.18 split-off translations update
- Update transifex slug
- Mention update of MSVC build in `doc/translation_process.md`
- Do a `make translate` to update English translations
- Pull current translations from transifex
2019-02-04 15:24:37 +01:00
Carl Dong
bad1716c6d init: Modify docs and add release note for 12255 2019-02-04 09:18:28 -05:00
João Barbosa
2f8b8f479b wallet: Close wallet env lock file
Close .walletlock file when a BerkeleyEnvironment is deleted.
2019-02-04 12:22:55 +00:00
João Barbosa
8602a1e6ae wallet: Close dbenv error file db.log
The error file db.log is opened by BerkeleyEnvironment instance and
should be closed after dbenv is closed.
2019-02-04 12:22:55 +00:00
Wladimir J. van der Laan
ebc6542d98
Merge #15322: wallet: Add missing cs_db lock
712d35bc56 wallet: Add missing cs_db lock (João Barbosa)

Pull request description:

  Without this lock `BerkeleyEnvironment::~BerkeleyEnvironment` and `GetWalletEnv` would race for `g_dbenvs`. This wasn't detected before because thread safety analysis does not check constructors
  and destructors.

  Reference: http://releases.llvm.org/5.0.2/tools/clang/docs/ThreadSafetyAnalysis.html#no-checking-inside-constructors-and-destructors

Tree-SHA512: 350cb2b991ca699a6bca85f87c82c38f0814484c8ccb0d7d83cb3bff9afcf60dd32b2a9554a9e72eb5803bfad8b6970fe7da618b39be5889178b86faa1b74124
2019-02-04 13:02:43 +01:00
Wladimir J. van der Laan
424327e1a8
Merge #15324: test: Make bloom tests deterministic
fae169c95e test: Make bloom tests deterministic (MarcoFalke)

Pull request description:

  non-deterministic tests are useless, since a failing test could not be reproduced unless the seed is known.

Tree-SHA512: 4f634ff0c6adf663444f1ac504f6dbceaa46b78d697b840531977ba30006453ac559d5c21cc3eaef6d92b87d46008a34b0db6331ea3318001987fcfaec634acf
2019-02-04 12:26:42 +01:00
Wladimir J. van der Laan
64127b3098
Merge #15280: gui: Fix shutdown order
0dd6a8c124 Check m_internals in UnregisterValidationInterface (João Barbosa)
fd6d499bda gui: Fix m_node.startShutdown() order (João Barbosa)
07b9aadcfc gui: Expose BitcoinGUI::unsubscribeFromCoreSignals (João Barbosa)
60e190ceb3 gui: Fix WalletController deletion (João Barbosa)

Pull request description:

  This PR consists in small fixes in order to have a clean shutdown from the GUI.

Tree-SHA512: a9c641f202bc810698c4a39d5c5a1f54e54bdab098c412d65418879e00764a9db9f38383813914d591e24e097e49f177942b2ae6c57bba05dcc095e8a1d0b8f4
2019-02-04 11:09:58 +01:00
João Barbosa
0dd6a8c124 Check m_internals in UnregisterValidationInterface
When a wallet is created it is registered in the validation interface (in
CWallet::CreateWalletFromFile) but it is not immediately added to the
wallets list. If a shutdown is requested before AddWallet (case more
evident when -rescan is set) then m_internals can be released (in
Shutdown -> UnregisterBackgroundSignalScheduler) before the wallet and
then ReleaseWallet would call UnregisterValidationInterface with
m_internals already released.
2019-02-03 22:23:44 +00:00
João Barbosa
fd6d499bda gui: Fix m_node.startShutdown() order
This change forwards the shutdown request on the GUI (close the
application for instace) to the node as soon as possible. This way the
GUI doesn't have to wait for long operations to complete (rescan the
wallet for instance), instead those operations detect the shutdown
request and abort/interrupt.
2019-02-03 22:23:43 +00:00
João Barbosa
07b9aadcfc gui: Expose BitcoinGUI::unsubscribeFromCoreSignals
Move only change that makes unsubscribeFromCoreSignals public. It must be
called if the event loop is not running otherwise core signals handlers
can deadlock.
2019-02-03 22:23:43 +00:00
João Barbosa
60e190ceb3 gui: Fix WalletController deletion
The wallet controller instanced must be deleted after the window instance
since it is used there.
2019-02-03 22:23:43 +00:00
practicalswift
ef0b01217a tests: Make updatecoins_simulation_test deterministic 2019-02-03 10:34:22 +01:00
MarcoFalke
2fbf6a57d2
Merge #15330: test: Fix race in p2p_invalid_messages
fac3a054cb test: Fix race in p2p_invalid_messages (MarcoFalke)

Pull request description:

  After we change our magic bytes, the node may or may not send us messages such as feefilter or sendheaders, which would be rejected by `_on_data`.

  Solve that by replacing `_on_data` with a noop.

Tree-SHA512: bd25a81f0c6e31f09155e00abab8062777d827b9210d6a9b85ef35cfe5069338f100fecf058842f41a1f134fdb3cf7ac1fe80db493e4dab7988acdacb33149df
2019-02-02 20:02:25 -05:00
MarcoFalke
fac3a054cb
test: Fix race in p2p_invalid_messages 2019-02-02 17:45:20 -05:00
MeshCollider
6e6b859f85
Merge #15263: Descriptor expansions only need pubkey entries for PKH/WPKH
11e0fd8d6 Descriptor expansions only need pubkey entries for PKH/WPKH (Pieter Wuille)

Pull request description:

  Currently, calling `Expand` on a `Descriptor` object will populate the output FlatSigningProvider with all public keys involved in the descriptor. This is overkill, as pubkey entries are only needed when the lookup of a public key based on its hash is desired (which is the case for `pkh`, `wpkh`, and `combo` descriptors).

  Fix this by pushing the population of pubkey entries down into the individual descriptor implementation's `MakeScript` function, instead of doing it generically.

  This should make it easier to implement #14491 without importing P2PKH outputs for the individual public keys listed inside a multisig.

Tree-SHA512: 5bc7e9bd29f1b3bc63514803e9489b3bf126bfc177d46313aa9eeb98770ec61a97b55bd8ad4e2384154799f24b1bc4183bfdb4708b2ffa6e37ed2601a451cabc
2019-02-03 10:52:39 +13:00
MarcoFalke
fa6b7b9cf6
travis: Revert "Run extended tests once daily"
This reverts commit 88e3aa0bcb
2019-02-02 14:38:37 -05:00
MarcoFalke
fae169c95e
test: Make bloom tests deterministic 2019-02-02 14:12:01 -05:00
MarcoFalke
b3a715301a
Merge #15303: travis: Remove unused FUNCTIONAL_TESTS_CONFIG
facaae4cc4 travis: Save cache when compilation took very long (MarcoFalke)
faee6c9cac travis: Remove unused FUNCTIONAL_TESTS_CONFIG (MarcoFalke)

Pull request description:

  Closes #14163

Tree-SHA512: fb3dd0b7a0a3ee7ac1c6d4e9314239cd03ab4a11f04b6345ef4a1f50ea2b79ea4248c41e99a6fb923a4b1b477758c4fa665d56a4ab703acf5a58dbc7d852ffc4
2019-02-01 17:18:03 -05:00
ken2812221
bef8fdd6e2
msvc: Fix silent merge conflict between #13926 and #14372 2019-02-02 05:58:56 +08:00
Russell Yanofsky
aebafd0edf Rename Chain getLocator -> getTipLocator
Suggested https://github.com/bitcoin/bitcoin/pull/14711#discussion_r252044389
2019-02-01 16:17:43 -05:00
Russell Yanofsky
2c1fbaa771 Drop redundant get_value_or
Suggested https://github.com/bitcoin/bitcoin/pull/14711#discussion_r252041954
2019-02-01 16:16:16 -05:00
Russell Yanofsky
84adb206fc Fix ScanForWalletTransactions start_block comment
Suggested https://github.com/bitcoin/bitcoin/pull/14711#discussion_r252036436
2019-02-01 16:15:13 -05:00
João Barbosa
712d35bc56 wallet: Add missing cs_db lock
Without this lock BerkeleyEnvironment::~BerkeleyEnvironment and
GetWalletEnv would race for g_dbenvs. This wasn't detected before
because thread safety analysis does not check constructors and
destructors.
2019-02-01 21:13:08 +00:00
Russell Yanofsky
2efa66b464 Document rescanblockchain returned stop_height being null
Suggested https://github.com/bitcoin/bitcoin/pull/14711#discussion_r252031485
2019-02-01 16:11:05 -05:00
MarcoFalke
facaae4cc4
travis: Save cache when compilation took very long 2019-02-01 15:20:00 -05:00
MarcoFalke
2c0867a181
Merge #15308: build: Restore compatibility with older boost
119d360aab travis: Document whether functional tests are run in the job name (Ben Woosley)
64f28545e3 Revert "travis: Compile trusty with depends for now" (Ben Woosley)
267eac00f9 Prefer boost::optional#get_value_or over #value_or (Ben Woosley)
1971f5ba04 Piecewise construct to avoid invalid construction (Ben Woosley)

Pull request description:

  In light of #14979, I realized that only qt 5.5+ was being tested under CI, while compatibility lists 5.2+.

  In #15276, Marco added Trusty to CI, building with depends. This changes that build to system libraries, in order to ensure ongoing compatibility with our claimed minimum required versions.

  Fixes #14983, previously open as #14998

Tree-SHA512: 6cff5e28c756ecb8bf797c8f6eb77c1944ba61a8dd6d7d4984e63eef384f6429dc79c505da3241c05b9c4db31c72b2a9846c7365aba9280f2e0620e5f3998d07
2019-02-01 13:05:30 -05:00
Russell Yanofsky
db2d093233 Add suggested rescanblockchain comments
From https://github.com/bitcoin/bitcoin/pull/14711#discussion_r252043990
2019-02-01 13:05:30 -05:00
Russell Yanofsky
a8d645c934 Update ScanForWalletTransactions result comment
Suggested https://github.com/bitcoin/bitcoin/pull/14711#discussion_r252038666
2019-02-01 13:05:30 -05:00