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8e0e07664a
Summary: Ref T13098. Historically, Phabricator was split into three parts: - Phabricator, the server. - Arcanist, the client. - libphutil, libraries shared between the client and server. One imagined use case for this was that `libphutil` might become a general-purpose library that other projects would use. However, this didn't really happen, and it seems unlikely to at this point: Phabricator has become a relatively more sophisticated application platform; we didn't end up seeing or encouraging much custom development; what custom development there is basically embraces all of Phabricator since there are huge advantages to doing so; and a general "open source is awful" sort of factor here in the sense that open source users often don't have goals well aligned to our goals. Turning "arc" into a client platform and building package management solidify us in this direction of being a standalone platform, not a standalone utility library. Phabricator also depends on `arcanist/`. If it didn't, there would be a small advantage to saying "shared code + client for client, shared code + server for server", but there's no such distinction and it seems unlikely that one will ever exist. Even if it did, I think this has little value. Nowadays, I think this separation has no advantages for us and one significant cost: it makes installing `arcanist` more difficult for end-users. This will need some more finesssing (Phabricator will need some changes for compatibility, and a lot of stuff that still says "libphutil" or "phutil" may eventually want to say "arcanist"), and some stuff (like xhpast) is probably straight-up broken right now and needs some tweaking, but I don't anticipate any major issues here. There was never anything particularly magical about libphutil as a separate standalone library. Test Plan: Ran `arc`, it gets about as far as it did before. Reviewers: amckinley Reviewed By: amckinley Maniphest Tasks: T13098 Differential Revision: https://secure.phabricator.com/D19688
82 lines
1.7 KiB
PHP
Executable file
82 lines
1.7 KiB
PHP
Executable file
#!/usr/bin/env php
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<?php
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require_once dirname(__FILE__).'/../__init_script__.php';
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$args = new PhutilArgumentParser($argv);
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$args->setTagline(pht('acquire and hold a lockfile'));
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$args->setSynopsis(<<<EOHELP
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**lock.php** __file__ [__options__]
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Acquire a lockfile and hold it until told to unlock it.
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EOHELP
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);
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$args->parseStandardArguments();
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$args->parse(array(
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array(
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'name' => 'test',
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'help' => pht('Instead of holding the lock, release it and exit.'),
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),
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array(
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'name' => 'hold',
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'help' => pht('Hold indefinitely without prompting.'),
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),
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array(
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'name' => 'wait',
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'param' => 'n',
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'help' => pht('Block for up to __n__ seconds waiting for the lock.'),
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'default' => 0,
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),
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array(
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'name' => 'file',
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'wildcard' => true,
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),
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));
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$file = $args->getArg('file');
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if (count($file) !== 1) {
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$args->printHelpAndExit();
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}
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$file = head($file);
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$console = PhutilConsole::getConsole();
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$console->writeOut(
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"%s\n",
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pht('This process has PID %d. Acquiring lock...', getmypid()));
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$lock = PhutilFileLock::newForPath($file);
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try {
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$lock->lock($args->getArg('wait'));
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} catch (PhutilFileLockException $ex) {
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$console->writeOut(
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"**%s** %s\n",
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pht('UNABLE TO ACQUIRE LOCK:'),
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pht('Lock is already held.'));
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exit(1);
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}
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// NOTE: This string is magic, the unit tests look for it.
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$console->writeOut("%s\n", pht('LOCK ACQUIRED'));
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if ($args->getArg('test')) {
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$lock->unlock();
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exit(0);
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}
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if ($args->getArg('hold')) {
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while (true) {
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sleep(1);
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}
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}
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while (!$console->confirm(pht('Release lock?'))) {
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// Keep asking until they say yes.
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}
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$console->writeOut("%s\n", pht('Unlocking...'));
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$lock->unlock();
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$console->writeOut("%s\n", pht('Done.'));
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exit(0);
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