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Speedup arc branch

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Summary:
This reduces time of `arc branch` from 13s to 7s in my repo which is faster than `git branch --verbose` (10s).

The price for this speedup is that we loose the information [ahead 1, behind 21242] but we showed it only in branches with no revision so it's not a big deal.

Test Plan:
  $ arc branch

Reviewers: epriestley

Reviewed By: epriestley

CC: ahupp, aran, Korvin

Differential Revision: https://secure.phabricator.com/D3005
This commit is contained in:
vrana 2012-07-18 16:50:49 -07:00
parent 9997dd7830
commit cd2f8edb83
2 changed files with 27 additions and 21 deletions
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6
src/repository/api/ArcanistGitAPI.php
View file

@ -641,7 +641,7 @@ final class ArcanistGitAPI extends ArcanistRepositoryAPI {
*/ */
public function getAllBranches() { public function getAllBranches() {
list($branch_info) = $this->execxLocal( list($branch_info) = $this->execxLocal(
'branch --verbose --abbrev=40 --no-color'); 'branch --no-color');
$lines = explode("\n", rtrim($branch_info)); $lines = explode("\n", rtrim($branch_info));
$result = array(); $result = array();
@ -653,12 +653,10 @@ final class ArcanistGitAPI extends ArcanistRepositoryAPI {
continue; continue;
} }
list($current, $name, $hash, $desc) = preg_split('/\s+/', $line, 4); list($current, $name) = preg_split('/\s+/', $line, 2);
$result[] = array( $result[] = array(
'current' => !empty($current), 'current' => !empty($current),
'name' => $name, 'name' => $name,
'hash' => $hash,
'desc' => $desc,
); );
} }

42
src/workflow/ArcanistBranchWorkflow.php
View file

@ -83,10 +83,7 @@ EOTEXT
throw new ArcanistUsageException('No branches in this working copy.'); throw new ArcanistUsageException('No branches in this working copy.');
} }
$commit_map = $this->loadCommitInfo($branches, $repository_api); $branches = $this->loadCommitInfo($branches, $repository_api);
foreach ($branches as $key => $branch) {
$branches[$key] += $commit_map[$branch['hash']];
}
$revisions = $this->loadRevisions($branches); $revisions = $this->loadRevisions($branches);
@ -99,33 +96,44 @@ EOTEXT
array $branches, array $branches,
ArcanistRepositoryAPI $repository_api) { ArcanistRepositoryAPI $repository_api) {
// NOTE: "-s" is an option deep in git's diff argument parser that doesn't $futures = array();
// seem to have much documentation and has no long form. It suppresses any foreach ($branches as $branch) {
// diff output. // NOTE: "-s" is an option deep in git's diff argument parser that doesn't
// seem to have much documentation and has no long form. It suppresses any
// diff output.
$futures[$branch['name']] = $repository_api->execFutureLocal(
'show -s --format=%C %s',
'%H%x01%ct%x01%T%x01%s%x01%b',
$branch['name']);
}
$commits = ipull($branches, 'hash'); $branches = ipull($branches, null, 'name');
list($info) = $repository_api->execxLocal(
'show -s --format=%C %Ls',
'%H%x01%ct%x01%T%x01%s%n%b%x02',
$commits);
$commit_map = array(); $commit_map = array();
foreach (Futures($futures) as $name => $future) {
list($info) = $future->resolvex();
list($hash, $epoch, $tree, $desc, $text) = explode("\1", trim($info), 5);
$branch = $branches[$name];
$branch['hash'] = $hash;
$branch['desc'] = $desc;
$info = array_filter(explode("\2", trim($info)));
foreach ($info as $line) {
list($hash, $epoch, $tree, $text) = explode("\1", trim($line), 4);
try { try {
$text = $desc."\n".$text;
$message = ArcanistDifferentialCommitMessage::newFromRawCorpus($text); $message = ArcanistDifferentialCommitMessage::newFromRawCorpus($text);
$id = $message->getRevisionID(); $id = $message->getRevisionID();
$commit_map[$hash] = array( $branch += array(
'epoch' => (int)$epoch, 'epoch' => (int)$epoch,
'tree' => $tree, 'tree' => $tree,
'revisionID' => $id, 'revisionID' => $id,
); );
} catch (ArcanistUsageException $ex) { } catch (ArcanistUsageException $ex) {
// In case of invalid commit message which fails the parsing, do noting. // In case of invalid commit message which fails the parsing,
// do nothing.
} }
$commit_map[$hash] = $branch;
} }
return $commit_map; return $commit_map;