solenv/gdb/libreoffice/vcl.py

   1 # -*- tab-width: 4; indent-tabs-mode: nil; py-indent-offset: 4 -*-
   2 #
   3 # This file is part of the LibreOffice project.
   4 #
   5 # This Source Code Form is subject to the terms of the Mozilla Public
   6 # License, v. 2.0. If a copy of the MPL was not distributed with this
   7 # file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8 #
   9
  10 import six
  11 import gdb
  12 from libreoffice.util import printing
  13
  14 class ImplSchedulerDataPrinter(object):
  15     '''Prints the ImplSchedulerData linked list.
  16
  17        This can be used to dump the current state of the scheduler via:
  18           p *ImplGetSVData()->maSchedCtx.mpFirstSchedulerData
  19
  20        This doesn't include currently invoked tasks AKA the stack.
  21
  22        To dump the scheduler stack of invoked tasks use:
  23           p *ImplGetSVData()->maSchedCtx.mpSchedulerStack
  24     '''
  25
  26     def __init__(self, typename, value):
  27         self.typename = typename
  28         self.value = value
  29         self.timer_type_ptr = gdb.lookup_type("Timer").pointer()
  30         self.idle_type_ptr = gdb.lookup_type("Idle").pointer()
  31
  32     def as_string(self, gdbobj):
  33         if gdbobj['mpTask']:
  34             task  = gdbobj['mpTask'].dereference()
  35             timer = gdbobj['mpTask'].dynamic_cast( self.timer_type_ptr )
  36             idle  = gdbobj['mpTask'].dynamic_cast( self.idle_type_ptr )
  37             if idle:
  38                 task_type = "Idle"
  39             elif timer:
  40                 task_type = "Timer"
  41             else:
  42                 task_type = "Task"
  43             res = "{:7s}{:10s} active: {:6s}".format( task_type, str(task['mePriority']), str(task['mbActive']) )
  44             name = task['mpDebugName']
  45             if not name:
  46                 res = res + "   (task debug name not set)"
  47             else:
  48                 res = "{} '{}' ({})".format(res, str(name.string()), str(task.dynamic_type))
  49             val_type = gdb.lookup_type(str( task.dynamic_type )).pointer()
  50             timer = gdbobj['mpTask'].cast( val_type )
  51             if (task_type == "Timer"):
  52                 res = "{}: {}ms".format(res, timer['mnTimeout'])
  53             else:
  54                 assert 0 == timer['mnTimeout'], "Idle with timeout == {}".format( timer['mnTimeout'] )
  55             return res
  56         else:
  57             return "(no task)"
  58
  59     def to_string(self):
  60         return self.typename
  61
  62     def children(self):
  63         return self._iterator(self)
  64
  65     def display_hint(self):
  66         return 'array'
  67
  68     class _iterator(six.Iterator):
  69
  70         def __init__(self, printer):
  71             self.pos = 0
  72             self.printer = printer
  73             self.value = printer.value
  74
  75         def __iter__(self):
  76             return self
  77
  78         def __next__(self):
  79             if not self.value['mpNext']:
  80                 raise StopIteration()
  81
  82             pos = str(self.pos)
  83             name = "\n  " + self.printer.as_string(self.value)
  84             self.value = self.value['mpNext']
  85             self.pos += 1
  86
  87             return (pos, name)
  88
  89 printer = None
  90
  91 def build_pretty_printers():
  92     global printer
  93
  94     printer = printing.Printer("libreoffice/vcl")
  95     printer.add('ImplSchedulerData', ImplSchedulerDataPrinter)
  96
  97 def register_pretty_printers(obj):
  98     printing.register_pretty_printer(printer, obj)
  99
 100 build_pretty_printers()
 101
 102 # vim:set shiftwidth=4 softtabstop=4 expandtab: