61baf725ec
This applies the second part of GDB's End of Year Procedure, which
updates the copyright year range in all of GDB's files.
gdb/ChangeLog:
Update copyright year range in all GDB files.
146 lines
4.4 KiB
Python
146 lines
4.4 KiB
Python
# Copyright (C) 2013-2017 Free Software Foundation, Inc.
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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import time
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import os
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import gc
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class Measure(object):
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"""A class that measure and collect the interesting data for a given testcase.
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An instance of Measure has a collection of measurements, and each
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of them is to measure a given aspect, such as time and memory.
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"""
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def __init__(self, measurements):
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"""Constructor of measure.
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measurements is a collection of Measurement objects.
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"""
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self.measurements = measurements
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def measure(self, func, id):
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"""Measure the operations done by func with a collection of measurements."""
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# Enable GC, force GC and disable GC before running test in order to reduce
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# the interference from GC.
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gc.enable()
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gc.collect()
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gc.disable()
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for m in self.measurements:
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m.start(id)
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func()
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for m in self.measurements:
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m.stop(id)
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gc.enable()
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def report(self, reporter, name):
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"""Report the measured results."""
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for m in self.measurements:
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m.report(reporter, name)
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class Measurement(object):
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"""A measurement for a certain aspect."""
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def __init__(self, name, result):
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"""Constructor of Measurement.
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Attribute result is the TestResult associated with measurement.
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"""
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self.name = name;
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self.result = result
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def start(self, id):
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"""Abstract method to start the measurement."""
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raise NotImplementedError("Abstract Method:start")
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def stop(self, id):
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"""Abstract method to stop the measurement.
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When the measurement is stopped, we've got something, and
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record them in result.
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"""
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raise NotImplementedError("Abstract Method:stop.")
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def report(self, reporter, name):
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"""Report the measured data by argument reporter."""
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self.result.report(reporter, name + " " + self.name)
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class MeasurementCpuTime(Measurement):
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"""Measurement on CPU time."""
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# On UNIX, time.clock() measures the amount of CPU time that has
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# been used by the current process. On Windows it will measure
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# wall-clock seconds elapsed since the first call to the function.
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# Something other than time.clock() should be used to measure CPU
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# time on Windows.
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def __init__(self, result):
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super(MeasurementCpuTime, self).__init__("cpu_time", result)
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self.start_time = 0
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def start(self, id):
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self.start_time = time.clock()
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def stop(self, id):
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if os.name == 'nt':
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cpu_time = 0
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else:
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cpu_time = time.clock() - self.start_time
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self.result.record (id, cpu_time)
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class MeasurementWallTime(Measurement):
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"""Measurement on Wall time."""
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def __init__(self, result):
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super(MeasurementWallTime, self).__init__("wall_time", result)
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self.start_time = 0
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def start(self, id):
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self.start_time = time.time()
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def stop(self, id):
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wall_time = time.time() - self.start_time
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self.result.record (id, wall_time)
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class MeasurementVmSize(Measurement):
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"""Measurement on memory usage represented by VmSize."""
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def __init__(self, result):
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super(MeasurementVmSize, self).__init__("vmsize", result)
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def _compute_process_memory_usage(self, key):
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file_path = "/proc/%d/status" % os.getpid()
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try:
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t = open(file_path)
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v = t.read()
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t.close()
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except:
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return 0
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i = v.index(key)
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v = v[i:].split(None, 3)
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if len(v) < 3:
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return 0
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return int(v[1])
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def start(self, id):
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pass
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def stop(self, id):
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memory_used = self._compute_process_memory_usage("VmSize:")
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self.result.record (id, memory_used)
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