2f5262eb67
Continue along the same line as the recent patch that made the Ruby-related config scripts Python packages and make also the configs/common directory a package. All affected config scripts are updated (hopefully). Note that this change makes it apparent that the current organisation and naming of the config directory and its subdirectories is rather chaotic. We mix scripts that are directly invoked with scripts that merely contain convenience functions. While it is not addressed in this patch we should follow up with a re-organisation of the config structure, and renaming of some of the packages.
133 lines
4.7 KiB
Python
133 lines
4.7 KiB
Python
# Copyright (c) 2015 ARM Limited
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# All rights reserved.
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#
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# The license below extends only to copyright in the software and shall
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# not be construed as granting a license to any other intellectual
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# property including but not limited to intellectual property relating
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# to a hardware implementation of the functionality of the software
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# licensed hereunder. You may use the software subject to the license
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# terms below provided that you ensure that this notice is replicated
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# unmodified and in its entirety in all distributions of the software,
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# modified or unmodified, in source code or in binary form.
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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: Andreas Sandberg
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from multiprocessing import Process
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import sys
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import os
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import m5
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_exit_normal = (
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"target called exit()",
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"m5_exit instruction encountered",
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)
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_exit_limit = (
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"simulate() limit reached",
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)
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_exitcode_done = 0
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_exitcode_fail = 1
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_exitcode_checkpoint = 42
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def _run_step(name, restore=None, interval=0.5):
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"""
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Instantiate (optionally from a checkpoint if restore is set to the
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checkpoitn name) the system and run for interval seconds of
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simulated time. At the end of the simulation interval, create a
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checkpoint and exit.
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As this function is intended to run in its own process using the
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multiprocessing framework, the exit is a true call to exit which
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terminates the process. Exit codes are used to pass information to
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the parent.
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"""
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if restore is not None:
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m5.instantiate(restore)
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else:
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m5.instantiate()
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e = m5.simulate(m5.ticks.fromSeconds(interval))
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cause = e.getCause()
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if cause in _exit_limit:
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m5.checkpoint(name)
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sys.exit(_exitcode_checkpoint)
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elif cause in _exit_normal:
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sys.exit(_exitcode_done)
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else:
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print "Test failed: Unknown exit cause: %s" % cause
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sys.exit(_exitcode_fail)
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def run_test(root, interval=0.5, max_checkpoints=5):
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"""
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Run the simulated system for a fixed amount of time and take a
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checkpoint, then restore from the same checkpoint and run until
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the system calls m5 exit.
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"""
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cpt_name = os.path.join(m5.options.outdir, "test.cpt")
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restore = None
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for cpt_no in range(max_checkpoints):
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# Create a checkpoint from a separate child process. This enables
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# us to get back to a (mostly) pristine state and restart
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# simulation from the checkpoint.
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p = Process(target=_run_step,
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args=(cpt_name, ),
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kwargs={
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"restore" : restore,
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"interval" : interval,
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})
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p.start()
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# Wait for the child to return
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p.join()
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# Restore from the checkpoint next iteration
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restore = cpt_name
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if p.exitcode == _exitcode_done:
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print >> sys.stderr, "Test done."
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sys.exit(0)
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elif p.exitcode == _exitcode_checkpoint:
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pass
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else:
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print >> sys.stderr, "Test failed."
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sys.exit(1)
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# Maximum number of checkpoints reached. Just run full-speed from
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# now on.
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m5.instantiate()
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e = m5.simulate()
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cause = e.getCause()
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if cause in _exit_normal:
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sys.exit(0)
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else:
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print "Test failed: Unknown exit cause: %s" % cause
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sys.exit(1)
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