diff options
Diffstat (limited to 'external_libs/python/lockfile-0.10.2/lockfile/mkdirlockfile.py')
-rw-r--r-- | external_libs/python/lockfile-0.10.2/lockfile/mkdirlockfile.py | 83 |
1 files changed, 0 insertions, 83 deletions
diff --git a/external_libs/python/lockfile-0.10.2/lockfile/mkdirlockfile.py b/external_libs/python/lockfile-0.10.2/lockfile/mkdirlockfile.py deleted file mode 100644 index 8d2c801f..00000000 --- a/external_libs/python/lockfile-0.10.2/lockfile/mkdirlockfile.py +++ /dev/null @@ -1,83 +0,0 @@ -from __future__ import absolute_import, division - -import time -import os -import sys -import errno - -from . import (LockBase, LockFailed, NotLocked, NotMyLock, LockTimeout, - AlreadyLocked) - -class MkdirLockFile(LockBase): - """Lock file by creating a directory.""" - def __init__(self, path, threaded=True, timeout=None): - """ - >>> lock = MkdirLockFile('somefile') - >>> lock = MkdirLockFile('somefile', threaded=False) - """ - LockBase.__init__(self, path, threaded, timeout) - # Lock file itself is a directory. Place the unique file name into - # it. - self.unique_name = os.path.join(self.lock_file, - "%s.%s%s" % (self.hostname, - self.tname, - self.pid)) - - def acquire(self, timeout=None): - timeout = timeout is not None and timeout or self.timeout - end_time = time.time() - if timeout is not None and timeout > 0: - end_time += timeout - - if timeout is None: - wait = 0.1 - else: - wait = max(0, timeout / 10) - - while True: - try: - os.mkdir(self.lock_file) - except OSError: - err = sys.exc_info()[1] - if err.errno == errno.EEXIST: - # Already locked. - if os.path.exists(self.unique_name): - # Already locked by me. - return - if timeout is not None and time.time() > end_time: - if timeout > 0: - raise LockTimeout("Timeout waiting to acquire" - " lock for %s" % - self.path) - else: - # Someone else has the lock. - raise AlreadyLocked("%s is already locked" % - self.path) - time.sleep(wait) - else: - # Couldn't create the lock for some other reason - raise LockFailed("failed to create %s" % self.lock_file) - else: - open(self.unique_name, "wb").close() - return - - def release(self): - if not self.is_locked(): - raise NotLocked("%s is not locked" % self.path) - elif not os.path.exists(self.unique_name): - raise NotMyLock("%s is locked, but not by me" % self.path) - os.unlink(self.unique_name) - os.rmdir(self.lock_file) - - def is_locked(self): - return os.path.exists(self.lock_file) - - def i_am_locking(self): - return (self.is_locked() and - os.path.exists(self.unique_name)) - - def break_lock(self): - if os.path.exists(self.lock_file): - for name in os.listdir(self.lock_file): - os.unlink(os.path.join(self.lock_file, name)) - os.rmdir(self.lock_file) |