環境情報を削除

[stux/ultron.git] / venv / Lib / site-packages / pip / _vendor / lockfile / linklockfile.py

diff --git a/venv/Lib/site-packages/pip/_vendor/lockfile/linklockfile.py b/venv/Lib/site-packages/pip/_vendor/lockfile/linklockfile.py
deleted file mode 100644 (file)
index 2ca9be0..0000000
--- a/venv/Lib/site-packages/pip/_vendor/lockfile/linklockfile.py
+++ /dev/null
@@ -1,73 +0,0 @@
-from __future__ import absolute_import
-
-import time
-import os
-
-from . import (LockBase, LockFailed, NotLocked, NotMyLock, LockTimeout,
-               AlreadyLocked)
-
-
-class LinkLockFile(LockBase):
-    """Lock access to a file using atomic property of link(2).
-
-    >>> lock = LinkLockFile('somefile')
-    >>> lock = LinkLockFile('somefile', threaded=False)
-    """
-
-    def acquire(self, timeout=None):
-        try:
-            open(self.unique_name, "wb").close()
-        except IOError:
-            raise LockFailed("failed to create %s" % self.unique_name)
-
-        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
-
-        while True:
-            # Try and create a hard link to it.
-            try:
-                os.link(self.unique_name, self.lock_file)
-            except OSError:
-                # Link creation failed.  Maybe we've double-locked?
-                nlinks = os.stat(self.unique_name).st_nlink
-                if nlinks == 2:
-                    # The original link plus the one I created == 2.  We're
-                    # good to go.
-                    return
-                else:
-                    # Otherwise the lock creation failed.
-                    if timeout is not None and time.time() > end_time:
-                        os.unlink(self.unique_name)
-                        if timeout > 0:
-                            raise LockTimeout("Timeout waiting to acquire"
-                                              " lock for %s" %
-                                              self.path)
-                        else:
-                            raise AlreadyLocked("%s is already locked" %
-                                                self.path)
-                    time.sleep(timeout is not None and timeout / 10 or 0.1)
-            else:
-                # Link creation succeeded.  We're good to go.
-                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.unlink(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) and
-                os.stat(self.unique_name).st_nlink == 2)
-
-    def break_lock(self):
-        if os.path.exists(self.lock_file):
-            os.unlink(self.lock_file)