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[stux/ultron.git] / venv / Lib / site-packages / pip / _vendor / lockfile / mkdirlockfile.py
diff --git a/venv/Lib/site-packages/pip/_vendor/lockfile/mkdirlockfile.py b/venv/Lib/site-packages/pip/_vendor/lockfile/mkdirlockfile.py
deleted file mode 100644 (file)
index 05a8c96..0000000
+++ /dev/null
@@ -1,84 +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 if timeout is not None else 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)