87b9da2df4
This commit addresses gem5 checkpoints' linear versioning bottleneck. Since development is distributed across many private trees, there exists a sort of 'race' for checkpoint version numbers: internally a checkpoint version may be used but then resynchronizing with the external tree causes a conflict on that version. This change replaces the linear version number with a set of unique strings called tags. Now the only conflicts that can arise are of tag names, where collisions are much easier to avoid. The checkpoint upgrader (util/cpt_upgrader.py) upgrades the version representation, as one would expect. Each tag version implements its upgrader code in a python file in the util/cpt_upgraders directory rather than adding a function to the upgrader script itself. The version tags are stored in the 'Globals' section rather than 'root' (as the version was previously) because 'Globals' gets unserialized first and can provide a warning before any other unserialization errors can occur.
102 lines
3.2 KiB
Python
102 lines
3.2 KiB
Python
# -*- mode:python -*-
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# Copyright (c) 2006 The Regents of The University of Michigan
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions are
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# met: redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer;
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# redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution;
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# neither the name of the copyright holders nor the names of its
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# contributors may be used to endorse or promote products derived from
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# this software without specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#
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# Authors: Nathan Binkert
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Import('*')
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SimObject('ClockedObject.py')
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SimObject('TickedObject.py')
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SimObject('Root.py')
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SimObject('ClockDomain.py')
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SimObject('VoltageDomain.py')
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SimObject('System.py')
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SimObject('DVFSHandler.py')
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SimObject('SubSystem.py')
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Source('arguments.cc')
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Source('async.cc')
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Source('core.cc')
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Source('tags.cc')
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Source('cxx_config.cc')
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Source('cxx_manager.cc')
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Source('cxx_config_ini.cc')
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Source('debug.cc')
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Source('py_interact.cc', skip_no_python=True)
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Source('eventq.cc')
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Source('global_event.cc')
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Source('init.cc', skip_no_python=True)
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Source('init_signals.cc')
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Source('main.cc', main=True, skip_lib=True)
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Source('root.cc')
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Source('serialize.cc')
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Source('drain.cc')
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Source('sim_events.cc')
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Source('sim_object.cc')
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Source('sub_system.cc')
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Source('ticked_object.cc')
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Source('simulate.cc')
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Source('stat_control.cc')
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Source('stat_register.cc', skip_no_python=True)
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Source('clock_domain.cc')
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Source('voltage_domain.cc')
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Source('system.cc')
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Source('dvfs_handler.cc')
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if env['TARGET_ISA'] != 'null':
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SimObject('InstTracer.py')
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SimObject('Process.py')
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Source('faults.cc')
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Source('process.cc')
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Source('fd_entry.cc')
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Source('pseudo_inst.cc')
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Source('syscall_emul.cc')
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DebugFlag('Checkpoint')
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DebugFlag('Config')
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DebugFlag('CxxConfig')
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DebugFlag('Drain')
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DebugFlag('Event')
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DebugFlag('Fault')
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DebugFlag('Flow')
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DebugFlag('IPI')
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DebugFlag('IPR')
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DebugFlag('Interrupt')
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DebugFlag('Loader')
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DebugFlag('PseudoInst')
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DebugFlag('Stack')
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DebugFlag('SyscallVerbose')
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DebugFlag('TimeSync')
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DebugFlag('Thread')
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DebugFlag('Timer')
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DebugFlag('VtoPhys')
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DebugFlag('WorkItems')
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DebugFlag('ClockDomain')
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DebugFlag('VoltageDomain')
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DebugFlag('DVFS')
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