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Diffstat (limited to 'Tools/Scripts/webkitpy/port/http_lock.py')
| -rw-r--r-- | Tools/Scripts/webkitpy/port/http_lock.py | 137 |
1 files changed, 0 insertions, 137 deletions
diff --git a/Tools/Scripts/webkitpy/port/http_lock.py b/Tools/Scripts/webkitpy/port/http_lock.py deleted file mode 100644 index bdde37e32..000000000 --- a/Tools/Scripts/webkitpy/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) |