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Pieter Wuille f9cae832e6 Parallelize script verification
* During block verification (when parallelism is requested), script
  check actions are stored instead of being executed immediately.
* After every processed transactions, its signature actions are
  pushed to a CScriptCheckQueue, which maintains a queue and some
  synchronization mechanism.
* Two or more threads (if enabled) start processing elements from
  this queue,
* When the block connection code is finished processing transactions,
  it joins the worker pool until the queue is empty.

As cs_main is held the entire time, and all verification must be
finished before the block continues processing, this does not reach
the best possible performance. It is a less drastic change than
some more advanced mechanisms (like doing verification out-of-band
entirely, and rolling back blocks when a failure is detected).

The -par=N flag controls the number of threads (1-16). 0 means auto,
and is the default.
2013-01-08 02:00:59 +01:00
contrib Merge pull request #1967 from TheBlueMatt/leveldbmakefile 2012-10-29 14:11:55 -07:00
doc Merge pull request #2064 from petertodd/ipv6-doc-polarity 2012-12-12 09:23:55 -08:00
share Update version numbers to 0.7.99 2012-10-21 12:10:08 +02:00
src Parallelize script verification 2013-01-08 02:00:59 +01:00
.gitattributes Build identification strings 2012-04-10 18:16:53 +02:00
.gitignore Import LevelDB 1.5, it will be used for the transaction database. 2012-10-20 23:08:56 +02:00
bitcoin-qt.pro Parallelize script verification 2013-01-08 02:00:59 +01:00
COPYING Update all copyrights to 2012 2012-02-07 11:28:30 -05:00
INSTALL Update master 2012-06-21 09:36:20 +08:00
README directory re-organization (keeps the old build system) 2011-04-23 12:10:25 +02:00
README.md Updated readme file with timers. 2011-09-26 22:22:19 -04:00

Bitcoin integration/staging tree

Development process

Developers work in their own trees, then submit pull requests when they think their feature or bug fix is ready.

If it is a simple/trivial/non-controversial change, then one of the bitcoin development team members simply pulls it.

If it is a more complicated or potentially controversial change, then the patch submitter will be asked to start a discussion (if they haven't already) on the mailing list: http://sourceforge.net/mailarchive/forum.php?forum_name=bitcoin-development

The patch will be accepted if there is broad consensus that it is a good thing. Developers should expect to rework and resubmit patches if they don't match the project's coding conventions (see coding.txt) or are controversial.

The master branch is regularly built and tested, but is not guaranteed to be completely stable. Tags are regularly created to indicate new official, stable release versions of Bitcoin. If you would like to help test the Bitcoin core, please contact QA@BitcoinTesting.org.

Feature branches are created when there are major new features being worked on by several people.

From time to time a pull request will become outdated. If this occurs, and the pull is no longer automatically mergeable; a comment on the pull will be used to issue a warning of closure. The pull will be closed 15 days after the warning if action is not taken by the author. Pull requests closed in this manner will have their corresponding issue labeled 'stagnant'.

Issues with no commits will be given a similar warning, and closed after 15 days from their last activity. Issues closed in this manner will be labeled 'stale'.

Requests to reopen closed pull requests and/or issues can be submitted to QA@BitcoinTesting.org.