__init__.py revision 13712
1# Copyright (c) 2017 ARM Limited 2# All rights reserved. 3# 4# The license below extends only to copyright in the software and shall 5# not be construed as granting a license to any other intellectual 6# property including but not limited to intellectual property relating 7# to a hardware implementation of the functionality of the software 8# licensed hereunder. You may use the software subject to the license 9# terms below provided that you ensure that this notice is replicated 10# unmodified and in its entirety in all distributions of the software, 11# modified or unmodified, in source code or in binary form. 12# 13# Copyright (c) 2007 The Regents of The University of Michigan 14# Copyright (c) 2010 The Hewlett-Packard Development Company 15# All rights reserved. 16# 17# Redistribution and use in source and binary forms, with or without 18# modification, are permitted provided that the following conditions are 19# met: redistributions of source code must retain the above copyright 20# notice, this list of conditions and the following disclaimer; 21# redistributions in binary form must reproduce the above copyright 22# notice, this list of conditions and the following disclaimer in the 23# documentation and/or other materials provided with the distribution; 24# neither the name of the copyright holders nor the names of its 25# contributors may be used to endorse or promote products derived from 26# this software without specific prior written permission. 27# 28# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 29# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 30# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 31# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 32# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 33# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 34# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 35# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 36# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 37# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 38# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 39# 40# Authors: Nathan Binkert 41# Andreas Sandberg 42 43import m5 44 45import _m5.stats 46from m5.objects import Root 47from m5.util import attrdict, fatal 48 49# Stat exports 50from _m5.stats import schedStatEvent as schedEvent 51from _m5.stats import periodicStatDump 52 53outputList = [] 54 55def _url_factory(func): 56 """Wrap a plain Python function with URL parsing helpers 57 58 Wrap a plain Python function f(fn, **kwargs) to expect a URL that 59 has been split using urlparse.urlsplit. First positional argument 60 is assumed to be a filename, this is created as the concatenation 61 of the netloc (~hostname) and path in the parsed URL. Keyword 62 arguments are derived from the query values in the URL. 63 64 For example: 65 wrapped_f(urlparse.urlsplit("text://stats.txt?desc=False")) -> 66 f("stats.txt", desc=False) 67 68 """ 69 70 from functools import wraps 71 72 @wraps(func) 73 def wrapper(url): 74 try: 75 from urllib.parse import parse_qs 76 except ImportError: 77 # Python 2 fallback 78 from urlparse import parse_qs 79 from ast import literal_eval 80 81 qs = parse_qs(url.query, keep_blank_values=True) 82 83 # parse_qs returns a list of values for each parameter. Only 84 # use the last value since kwargs don't allow multiple values 85 # per parameter. Use literal_eval to transform string param 86 # values into proper Python types. 87 def parse_value(key, values): 88 if len(values) == 0 or (len(values) == 1 and not values[0]): 89 fatal("%s: '%s' doesn't have a value." % (url.geturl(), key)) 90 elif len(values) > 1: 91 fatal("%s: '%s' has multiple values." % (url.geturl(), key)) 92 else: 93 try: 94 return key, literal_eval(values[0]) 95 except ValueError: 96 fatal("%s: %s isn't a valid Python literal" \ 97 % (url.geturl(), values[0])) 98 99 kwargs = dict([ parse_value(k, v) for k, v in qs.items() ]) 100 101 try: 102 return func("%s%s" % (url.netloc, url.path), **kwargs) 103 except TypeError: 104 fatal("Illegal stat visitor parameter specified") 105 106 return wrapper 107 108@_url_factory 109def _textFactory(fn, desc=True): 110 """Output stats in text format. 111 112 Text stat files contain one stat per line with an optional 113 description. The description is enabled by default, but can be 114 disabled by setting the desc parameter to False. 115 116 Example: text://stats.txt?desc=False 117 118 """ 119 120 return _m5.stats.initText(fn, desc) 121 122factories = { 123 # Default to the text factory if we're given a naked path 124 "" : _textFactory, 125 "file" : _textFactory, 126 "text" : _textFactory, 127} 128 129def addStatVisitor(url): 130 """Add a stat visitor specified using a URL string 131 132 Stat visitors are specified using URLs on the following format: 133 format://path[?param=value[;param=value]] 134 135 The available formats are listed in the factories list. Factories 136 are called with the path as the first positional parameter and the 137 parameters are keyword arguments. Parameter values must be valid 138 Python literals. 139 140 """ 141 142 try: 143 from urllib.parse import urlsplit 144 except ImportError: 145 # Python 2 fallback 146 from urlparse import urlsplit 147 148 parsed = urlsplit(url) 149 150 try: 151 factory = factories[parsed.scheme] 152 except KeyError: 153 fatal("Illegal stat file type specified.") 154 155 outputList.append(factory(parsed)) 156 157def initSimStats(): 158 _m5.stats.initSimStats() 159 _m5.stats.registerPythonStatsHandlers() 160 161names = [] 162stats_dict = {} 163stats_list = [] 164def enable(): 165 '''Enable the statistics package. Before the statistics package is 166 enabled, all statistics must be created and initialized and once 167 the package is enabled, no more statistics can be created.''' 168 169 global stats_list 170 stats_list = list(_m5.stats.statsList()) 171 172 for stat in stats_list: 173 if not stat.check() or not stat.baseCheck(): 174 fatal("statistic '%s' (%d) was not properly initialized " \ 175 "by a regStats() function\n", stat.name, stat.id) 176 177 if not (stat.flags & flags.display): 178 stat.name = "__Stat%06d" % stat.id 179 180 stats_list.sort(key=lambda s: s.name.split('.')) 181 for stat in stats_list: 182 stats_dict[stat.name] = stat 183 stat.enable() 184 185 _m5.stats.enable(); 186 187def prepare(): 188 '''Prepare all stats for data access. This must be done before 189 dumping and serialization.''' 190 191 for stat in stats_list: 192 stat.prepare() 193 194lastDump = 0 195def dump(): 196 '''Dump all statistics data to the registered outputs''' 197 198 curTick = m5.curTick() 199 200 global lastDump 201 assert lastDump <= curTick 202 if lastDump == curTick: 203 return 204 lastDump = curTick 205 206 _m5.stats.processDumpQueue() 207 208 prepare() 209 210 for output in outputList: 211 if output.valid(): 212 output.begin() 213 for stat in stats_list: 214 stat.visit(output) 215 output.end() 216 217def reset(): 218 '''Reset all statistics to the base state''' 219 220 # call reset stats on all SimObjects 221 root = Root.getInstance() 222 if root: 223 for obj in root.descendants(): obj.resetStats() 224 225 # call any other registered stats reset callbacks 226 for stat in stats_list: 227 stat.reset() 228 229 _m5.stats.processResetQueue() 230 231flags = attrdict({ 232 'none' : 0x0000, 233 'init' : 0x0001, 234 'display' : 0x0002, 235 'total' : 0x0010, 236 'pdf' : 0x0020, 237 'cdf' : 0x0040, 238 'dist' : 0x0080, 239 'nozero' : 0x0100, 240 'nonan' : 0x0200, 241}) 242