Remove the 'http_lock' and 'file_lock' code from webkitpy.

Tools/Scripts/webkitpy/layout_tests/port/http_lock.py

Index: Tools/Scripts/webkitpy/layout_tests/port/http_lock.py
diff --git a/Tools/Scripts/webkitpy/layout_tests/port/http_lock.py b/Tools/Scripts/webkitpy/layout_tests/port/http_lock.py
deleted file mode 100644
index bdde37e32b38ae9ef1ca3f132837072830475954..0000000000000000000000000000000000000000
--- a/Tools/Scripts/webkitpy/layout_tests/port/http_lock.py
+++ /dev/null
@@ -1,137 +0,0 @@
-# Copyright (C) 2010 Gabor Rapcsanyi (rgabor@inf.u-szeged.hu), University of Szeged
-# Copyright (C) 2010 Andras Becsi (abecsi@inf.u-szeged.hu), University of Szeged
-#
-# All rights reserved.
-#
-# Redistribution and use in source and binary forms, with or without
-# modification, are permitted provided that the following conditions
-# are met:
-# 1. Redistributions of source code must retain the above copyright
-#    notice, this list of conditions and the following disclaimer.
-# 2. Redistributions in binary form must reproduce the above copyright
-#    notice, this list of conditions and the following disclaimer in the
-#    documentation and/or other materials provided with the distribution.
-#
-# THIS SOFTWARE IS PROVIDED BY UNIVERSITY OF SZEGED ``AS IS'' AND ANY
-# EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
-# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
-# PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL UNIVERSITY OF SZEGED OR
-# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
-# EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
-# PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
-# PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
-# OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-# FIXME: rename this file, and add more text about how this is
-# different from the base file_lock class.
-
-"""This class helps to block NRWT threads when more NRWTs run
-perf, http and websocket tests in a same time."""
-
-import logging
-import os
-import sys
-import tempfile
-import time
-
-from webkitpy.common.system.executive import Executive
-from webkitpy.common.system.file_lock import FileLock
-from webkitpy.common.system.filesystem import FileSystem
-
-
-_log = logging.getLogger(__name__)
-
-
-class HttpLock(object):
-    def __init__(self, lock_path, lock_file_prefix="WebKitHttpd.lock.", guard_lock="WebKit.lock", filesystem=None, executive=None, name='HTTP'):
-        self._executive = executive or Executive()
-        self._filesystem = filesystem or FileSystem()
-        self._lock_path = lock_path
-        if not self._lock_path:
-            # FIXME: FileSystem should have an accessor for tempdir()
-            self._lock_path = tempfile.gettempdir()
-        self._lock_file_prefix = lock_file_prefix
-        self._lock_file_path_prefix = self._filesystem.join(self._lock_path, self._lock_file_prefix)
-        self._guard_lock_file = self._filesystem.join(self._lock_path, guard_lock)
-        self._guard_lock = FileLock(self._guard_lock_file)
-        self._process_lock_file_name = ""
-        self._name = name
-
-    def cleanup_http_lock(self):
-        """Delete the lock file if exists."""
-        if self._filesystem.exists(self._process_lock_file_name):
-            _log.debug("Removing lock file: %s" % self._process_lock_file_name)
-            self._filesystem.remove(self._process_lock_file_name)
-
-    def _extract_lock_number(self, lock_file_name):
-        """Return the lock number from lock file."""
-        prefix_length = len(self._lock_file_path_prefix)
-        return int(lock_file_name[prefix_length:])
-
-    def _lock_file_list(self):
-        """Return the list of lock files sequentially."""
-        lock_list = self._filesystem.glob(self._lock_file_path_prefix + '*')
-        lock_list.sort(key=self._extract_lock_number)
-        return lock_list
-
-    def _next_lock_number(self):
-        """Return the next available lock number."""
-        lock_list = self._lock_file_list()
-        if not lock_list:
-            return 0
-        return self._extract_lock_number(lock_list[-1]) + 1
-
-    def _current_lock_pid(self):
-        """Return with the current lock pid. If the lock is not valid
-        it deletes the lock file."""
-        lock_list = self._lock_file_list()
-        if not lock_list:
-            _log.debug("No lock file list")
-            return
-        try:
-            current_pid = self._filesystem.read_text_file(lock_list[0])
-            if not (current_pid and self._executive.check_running_pid(int(current_pid))):
-                _log.debug("Removing stuck lock file: %s" % lock_list[0])
-                self._filesystem.remove(lock_list[0])
-                return
-        except IOError, e:
-            _log.debug("IOError: %s" % e)
-            return
-        except OSError, e:
-            _log.debug("OSError: %s" % e)
-            return
-        return int(current_pid)
-
-    def _create_lock_file(self):
-        """The lock files are used to schedule the running test sessions in first
-        come first served order. The guard lock ensures that the lock numbers are
-        sequential."""
-        if not self._filesystem.exists(self._lock_path):
-            _log.debug("Lock directory does not exist: %s" % self._lock_path)
-            return False
-
-        if not self._guard_lock.acquire_lock():
-            _log.debug("Guard lock timed out!")
-            return False
-
-        self._process_lock_file_name = (self._lock_file_path_prefix + str(self._next_lock_number()))
-        _log.debug("Creating lock file: %s" % self._process_lock_file_name)
-        # FIXME: Executive.py should have an accessor for getpid()
-        self._filesystem.write_text_file(self._process_lock_file_name, str(os.getpid()))
-        self._guard_lock.release_lock()
-        return True
-
-    def wait_for_httpd_lock(self):
-        """Create a lock file and wait until it's turn comes. If something goes wrong
-        it wont do any locking."""
-        if not self._create_lock_file():
-            _log.debug("Warning, %s locking failed!" % self._name)
-            return
-
-        # FIXME: This can hang forever!
-        while self._current_lock_pid() != os.getpid():
-            time.sleep(1)
-
-        _log.debug("%s lock acquired" % self._name)