gstreamer/debug-viewer/GstDebugViewer/GUI/models.py

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2009-08-06 23:54:10 +00:00
# -*- coding: utf-8; mode: python; -*-
#
# GStreamer Debug Viewer - View and analyze GStreamer debug log files
#
# Copyright (C) 2007 René Stadler <mail@renestadler.de>
#
# This program is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by the Free
# Software Foundation; either version 3 of the License, or (at your option)
# any later version.
#
# This program is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
# FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
# more details.
#
# You should have received a copy of the GNU General Public License along with
# this program. If not, see <http://www.gnu.org/licenses/>.
"""GStreamer Debug Viewer GUI module."""
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from array import array
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from bisect import bisect_left
import logging
import gobject
import gtk
from GstDebugViewer import Common, Data
class LogModelBase (gtk.GenericTreeModel):
__metaclass__ = Common.GUI.MetaModel
columns = ("COL_TIME", gobject.TYPE_UINT64,
"COL_PID", int,
"COL_THREAD", gobject.TYPE_UINT64,
"COL_LEVEL", object,
"COL_CATEGORY", str,
"COL_FILENAME", str,
"COL_LINE_NUMBER", int,
"COL_FUNCTION", str,
"COL_OBJECT", str,
"COL_MESSAGE", str,)
def __init__ (self):
gtk.GenericTreeModel.__init__ (self)
##self.props.leak_references = False
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self.line_offsets = array ("I")
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self.line_levels = [] # FIXME: Not so nice!
self.line_cache = {}
def ensure_cached (self, line_offset):
raise NotImplementedError ("derived classes must override this method")
def access_offset (self, offset):
raise NotImplementedError ("derived classes must override this method")
def iter_rows_offset (self):
ensure_cached = self.ensure_cached
line_cache = self.line_cache
line_levels = self.line_levels
COL_LEVEL = self.COL_LEVEL
for i, offset in enumerate (self.line_offsets):
ensure_cached (offset)
row = line_cache[offset]
row[COL_LEVEL] = line_levels[i] # FIXME
yield (row, offset,)
def on_get_flags (self):
flags = gtk.TREE_MODEL_LIST_ONLY | gtk.TREE_MODEL_ITERS_PERSIST
return flags
def on_get_n_columns (self):
return len (self.column_types)
def on_get_column_type (self, col_id):
return self.column_types[col_id]
def on_get_iter (self, path):
if not path:
return
if len (path) > 1:
# Flat model.
return None
line_index = path[0]
if line_index > len (self.line_offsets) - 1:
return None
return line_index
def on_get_path (self, rowref):
line_index = rowref
return (line_index,)
def on_get_value (self, line_index, col_id):
last_index = len (self.line_offsets) - 1
if line_index > last_index:
return None
if col_id == self.COL_LEVEL:
return self.line_levels[line_index]
line_offset = self.line_offsets[line_index]
self.ensure_cached (line_offset)
value = self.line_cache[line_offset][col_id]
if col_id == self.COL_MESSAGE:
message_offset = value
value = self.access_offset (line_offset + message_offset).strip ()
return value
def get_value_range (self, col_id, start, stop):
if col_id != self.COL_LEVEL:
raise NotImplementedError ("XXX FIXME")
return self.line_levels[start:stop]
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def on_iter_next (self, line_index):
last_index = len (self.line_offsets) - 1
if line_index >= last_index:
return None
else:
return line_index + 1
def on_iter_children (self, parent):
return self.on_iter_nth_child (parent, 0)
def on_iter_has_child (self, rowref):
return False
def on_iter_n_children (self, rowref):
if rowref is not None:
return 0
return len (self.line_offsets)
def on_iter_nth_child (self, parent, n):
last_index = len (self.line_offsets) - 1
if parent or n > last_index:
return None
return n
def on_iter_parent (self, child):
return None
## def on_ref_node (self, rowref):
## pass
## def on_unref_node (self, rowref):
## pass
class LazyLogModel (LogModelBase):
def __init__ (self, log_obj = None):
LogModelBase.__init__ (self)
self.__log_obj = log_obj
if log_obj:
self.set_log (log_obj)
def set_log (self, log_obj):
self.__fileobj = log_obj.fileobj
self.line_cache.clear ()
self.line_offsets = log_obj.line_cache.offsets
self.line_levels = log_obj.line_cache.levels
def access_offset (self, offset):
# TODO: Implement using one slice access instead of seek+readline.
self.__fileobj.seek (offset)
return self.__fileobj.readline ()
def ensure_cached (self, line_offset):
if line_offset in self.line_cache:
return
if len (self.line_cache) > 10000:
self.line_cache.clear ()
self.__fileobj.seek (line_offset)
line = self.__fileobj.readline ()
self.line_cache[line_offset] = Data.LogLine.parse_full (line)
class FilteredLogModelBase (LogModelBase):
def __init__ (self, super_model):
LogModelBase.__init__ (self)
self.logger = logging.getLogger ("filter-model-base")
self.super_model = super_model
self.access_offset = super_model.access_offset
self.ensure_cached = super_model.ensure_cached
self.line_cache = super_model.line_cache
def line_index_to_super (self, line_index):
raise NotImplementedError ("index conversion not supported")
def line_index_from_super (self, super_line_index):
raise NotImplementedError ("index conversion not supported")
class FilteredLogModel (FilteredLogModelBase):
def __init__ (self, super_model):
FilteredLogModelBase.__init__ (self, super_model)
self.logger = logging.getLogger ("filtered-log-model")
self.filters = []
self.reset ()
self.__active_process = None
self.__filter_progress = 0.
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def reset (self):
self.line_offsets = self.super_model.line_offsets
self.line_levels = self.super_model.line_levels
self.super_index = xrange (len (self.line_offsets))
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del self.filters[:]
def __filter_process (self, filter):
YIELD_LIMIT = 10000
self.logger.debug ("preparing new filter")
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new_line_offsets = array ("I")
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new_line_levels = []
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new_super_index = array ("I")
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level_id = self.COL_LEVEL
func = filter.filter_func
def enum ():
i = 0
for row, offset in self.iter_rows_offset ():
line_index = self.super_index[i]
yield (line_index, row, offset,)
i += 1
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self.logger.debug ("running filter")
progress = 0.
progress_full = float (len (self))
y = YIELD_LIMIT
for i, row, offset in enum ():
if func (row):
new_line_offsets.append (offset)
new_line_levels.append (row[level_id])
new_super_index.append (i)
y -= 1
if y == 0:
progress += float (YIELD_LIMIT)
self.__filter_progress = progress / progress_full
y = YIELD_LIMIT
yield True
self.line_offsets = new_line_offsets
self.line_levels = new_line_levels
self.super_index = new_super_index
self.logger.debug ("filtering finished")
self.__filter_progress = 1.
self.__handle_filter_process_finished ()
yield False
def add_filter (self, filter, dispatcher):
if self.__active_process is not None:
raise ValueError ("dispatched a filter process already")
self.filters.append (filter)
self.__dispatcher = dispatcher
self.__active_process = self.__filter_process (filter)
dispatcher (self.__active_process)
def abort_process (self):
if self.__active_process is None:
raise ValueError ("no filter process running")
self.__dispatcher.cancel ()
self.__active_process = None
self.__dispatcher = None
del self.filters[-1]
def get_filter_progress (self):
if self.__active_process is None:
raise ValueError ("no filter process running")
return self.__filter_progress
def __handle_filter_process_finished (self):
self.__active_process = None
self.handle_process_finished ()
def handle_process_finished (self):
pass
def line_index_from_super (self, super_line_index):
return bisect_left (self.super_index, super_line_index)
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def line_index_to_super (self, line_index):
return self.super_index[line_index]
def set_range (self, super_start, super_stop):
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old_super_start = self.line_index_to_super (0)
old_super_stop = self.line_index_to_super (len (self.super_index) - 1) + 1
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self.logger.debug ("set range (%i, %i), current (%i, %i)",
super_start, super_stop, old_super_start, old_super_stop)
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if len (self.filters) == 0:
# Identity.
self.super_index = xrange (super_start, super_stop)
self.line_offsets = SubRange (self.super_model.line_offsets,
super_start, super_stop)
self.line_levels = SubRange (self.super_model.line_levels,
super_start, super_stop)
return
if super_start < old_super_start:
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# TODO:
raise NotImplementedError ("Only handling further restriction of the range"
" (start offset = %i)" % (start_offset,))
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if super_stop > old_super_stop:
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# TODO:
raise NotImplementedError ("Only handling further restriction of the range"
" (end offset = %i)" % (stop_offset,))
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start = self.line_index_from_super (super_start)
stop = self.line_index_from_super (super_stop)
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self.super_index = SubRange (self.super_index, start, stop)
self.line_offsets = SubRange (self.line_offsets, start, stop)
self.line_levels = SubRange (self.line_levels, start, stop)
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class SubRange (object):
__slots__ = ("l", "start", "stop",)
def __init__ (self, l, start, stop):
if start > stop:
raise ValueError ("need start <= stop (got %r, %r)" % (start, stop,))
if type (l) == type (self):
# Another SubRange, don't stack:
start += l.start
stop += l.start
l = l.l
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self.l = l
self.start = start
self.stop = stop
def __getitem__ (self, i):
if isinstance (i, slice):
stop = i.stop
if stop >= 0:
stop += self.start
else:
stop += self.stop
return self.l[i.start + self.start:stop]
else:
return self.l[i + self.start]
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def __len__ (self):
return self.stop - self.start
def __iter__ (self):
l = self.l
for i in xrange (self.start, self.stop):
yield l[i]
class LineViewLogModel (FilteredLogModelBase):
def __init__ (self, super_model):
FilteredLogModelBase.__init__ (self, super_model)
self.line_offsets = []
self.line_levels = []
self.parent_indices = []
def reset (self):
del self.line_offsets[:]
del self.line_levels[:]
def line_index_to_super (self, line_index):
return self.parent_indices[line_index]
def insert_line (self, position, super_line_index):
if position == -1:
position = len (self.line_offsets)
li = super_line_index
self.line_offsets.insert (position, self.super_model.line_offsets[li])
self.line_levels.insert (position, self.super_model.line_levels[li])
self.parent_indices.insert (position, super_line_index)
path = (position,)
tree_iter = self.get_iter (path)
self.row_inserted (path, tree_iter)
def replace_line (self, line_index, super_line_index):
li = line_index
self.line_offsets[li] = self.super_model.line_offsets[super_line_index]
self.line_levels[li] = self.super_model.line_levels[super_line_index]
self.parent_indices[li] = super_line_index
path = (line_index,)
tree_iter = self.get_iter (path)
self.row_changed (path, tree_iter)
def remove_line (self, line_index):
for l in (self.line_offsets,
self.line_levels,
self.parent_indices,):
del l[line_index]
path = (line_index,)
self.row_deleted (path)