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1 | 1 | # encoding: utf-8 |
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2 | 2 | """ |
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3 | 3 | Utilities for getting information about IPython and the system it's running in. |
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4 | 4 | """ |
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5 | 5 | |
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6 | 6 | #----------------------------------------------------------------------------- |
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7 | 7 | # Copyright (C) 2008-2011 The IPython Development Team |
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8 | 8 | # |
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9 | 9 | # Distributed under the terms of the BSD License. The full license is in |
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10 | 10 | # the file COPYING, distributed as part of this software. |
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11 | 11 | #----------------------------------------------------------------------------- |
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12 | 12 | |
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13 | 13 | #----------------------------------------------------------------------------- |
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14 | 14 | # Imports |
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15 | 15 | #----------------------------------------------------------------------------- |
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16 | 16 | |
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17 | 17 | import os |
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18 | 18 | import platform |
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19 | 19 | import pprint |
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20 | 20 | import sys |
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21 | 21 | import subprocess |
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22 | 22 | |
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23 | 23 | from IPython.core import release |
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24 | 24 | from IPython.utils import _sysinfo, encoding |
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25 | 25 | |
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26 | 26 | #----------------------------------------------------------------------------- |
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27 | 27 | # Code |
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28 | 28 | #----------------------------------------------------------------------------- |
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29 | 29 | |
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30 | 30 | def pkg_commit_hash(pkg_path): |
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31 | 31 | """Get short form of commit hash given directory `pkg_path` |
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32 | 32 | |
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33 | 33 | We get the commit hash from (in order of preference): |
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34 | 34 | |
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35 | 35 | * IPython.utils._sysinfo.commit |
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36 | 36 | * git output, if we are in a git repository |
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37 | 37 | |
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38 | 38 | If these fail, we return a not-found placeholder tuple |
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39 | 39 | |
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40 | 40 | Parameters |
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41 | 41 | ---------- |
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42 | 42 | pkg_path : str |
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43 | 43 | directory containing package |
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44 | 44 | only used for getting commit from active repo |
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45 | 45 | |
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46 | 46 | Returns |
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47 | 47 | ------- |
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48 | 48 | hash_from : str |
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49 | 49 | Where we got the hash from - description |
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50 | 50 | hash_str : str |
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51 | 51 | short form of hash |
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52 | 52 | """ |
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53 | 53 | # Try and get commit from written commit text file |
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54 | 54 | if _sysinfo.commit: |
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55 | 55 | return "installation", _sysinfo.commit |
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56 | 56 | |
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57 | 57 | # maybe we are in a repository |
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58 | proc = subprocess.Popen('git rev-parse --short HEAD', | |
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58 | proc = subprocess.Popen('git rev-parse --short HEAD'.split(' '), | |
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59 | 59 | stdout=subprocess.PIPE, |
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60 | 60 | stderr=subprocess.PIPE, |
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61 |
cwd=pkg_path |
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61 | cwd=pkg_path) | |
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62 | 62 | repo_commit, _ = proc.communicate() |
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63 | 63 | if repo_commit: |
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64 | 64 | return 'repository', repo_commit.strip().decode('ascii') |
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65 | 65 | return '(none found)', '<not found>' |
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66 | 66 | |
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67 | 67 | |
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68 | 68 | def pkg_info(pkg_path): |
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69 | 69 | """Return dict describing the context of this package |
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70 | 70 | |
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71 | 71 | Parameters |
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72 | 72 | ---------- |
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73 | 73 | pkg_path : str |
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74 | 74 | path containing __init__.py for package |
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75 | 75 | |
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76 | 76 | Returns |
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77 | 77 | ------- |
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78 | 78 | context : dict |
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79 | 79 | with named parameters of interest |
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80 | 80 | """ |
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81 | 81 | src, hsh = pkg_commit_hash(pkg_path) |
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82 | 82 | return dict( |
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83 | 83 | ipython_version=release.version, |
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84 | 84 | ipython_path=pkg_path, |
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85 | 85 | commit_source=src, |
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86 | 86 | commit_hash=hsh, |
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87 | 87 | sys_version=sys.version, |
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88 | 88 | sys_executable=sys.executable, |
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89 | 89 | sys_platform=sys.platform, |
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90 | 90 | platform=platform.platform(), |
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91 | 91 | os_name=os.name, |
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92 | 92 | default_encoding=encoding.DEFAULT_ENCODING, |
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93 | 93 | ) |
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94 | 94 | |
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95 | 95 | def get_sys_info(): |
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96 | 96 | """Return useful information about IPython and the system, as a dict.""" |
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97 | 97 | p = os.path |
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98 | 98 | path = p.realpath(p.dirname(p.abspath(p.join(__file__, '..')))) |
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99 | 99 | return pkg_info(path) |
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100 | 100 | |
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101 | 101 | def sys_info(): |
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102 | 102 | """Return useful information about IPython and the system, as a string. |
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103 | 103 | |
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104 | 104 | Examples |
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105 | 105 | -------- |
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106 | 106 | :: |
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107 | 107 | |
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108 | 108 | In [2]: print(sys_info()) |
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109 | 109 | {'commit_hash': '144fdae', # random |
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110 | 110 | 'commit_source': 'repository', |
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111 | 111 | 'ipython_path': '/home/fperez/usr/lib/python2.6/site-packages/IPython', |
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112 | 112 | 'ipython_version': '0.11.dev', |
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113 | 113 | 'os_name': 'posix', |
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114 | 114 | 'platform': 'Linux-2.6.35-22-generic-i686-with-Ubuntu-10.10-maverick', |
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115 | 115 | 'sys_executable': '/usr/bin/python', |
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116 | 116 | 'sys_platform': 'linux2', |
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117 | 117 | 'sys_version': '2.6.6 (r266:84292, Sep 15 2010, 15:52:39) \\n[GCC 4.4.5]'} |
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118 | 118 | """ |
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119 | 119 | return pprint.pformat(get_sys_info()) |
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120 | 120 | |
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121 | 121 | def _num_cpus_unix(): |
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122 | 122 | """Return the number of active CPUs on a Unix system.""" |
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123 | 123 | return os.sysconf("SC_NPROCESSORS_ONLN") |
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124 | 124 | |
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125 | 125 | |
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126 | 126 | def _num_cpus_darwin(): |
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127 | 127 | """Return the number of active CPUs on a Darwin system.""" |
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128 | 128 | p = subprocess.Popen(['sysctl','-n','hw.ncpu'],stdout=subprocess.PIPE) |
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129 | 129 | return p.stdout.read() |
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130 | 130 | |
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131 | 131 | |
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132 | 132 | def _num_cpus_windows(): |
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133 | 133 | """Return the number of active CPUs on a Windows system.""" |
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134 | 134 | return os.environ.get("NUMBER_OF_PROCESSORS") |
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135 | 135 | |
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136 | 136 | |
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137 | 137 | def num_cpus(): |
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138 | 138 | """Return the effective number of CPUs in the system as an integer. |
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139 | 139 | |
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140 | 140 | This cross-platform function makes an attempt at finding the total number of |
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141 | 141 | available CPUs in the system, as returned by various underlying system and |
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142 | 142 | python calls. |
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143 | 143 | |
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144 | 144 | If it can't find a sensible answer, it returns 1 (though an error *may* make |
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145 | 145 | it return a large positive number that's actually incorrect). |
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146 | 146 | """ |
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147 | 147 | |
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148 | 148 | # Many thanks to the Parallel Python project (http://www.parallelpython.com) |
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149 | 149 | # for the names of the keys we needed to look up for this function. This |
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150 | 150 | # code was inspired by their equivalent function. |
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151 | 151 | |
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152 | 152 | ncpufuncs = {'Linux':_num_cpus_unix, |
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153 | 153 | 'Darwin':_num_cpus_darwin, |
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154 | 154 | 'Windows':_num_cpus_windows |
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155 | 155 | } |
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156 | 156 | |
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157 | 157 | ncpufunc = ncpufuncs.get(platform.system(), |
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158 | 158 | # default to unix version (Solaris, AIX, etc) |
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159 | 159 | _num_cpus_unix) |
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160 | 160 | |
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161 | 161 | try: |
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162 | 162 | ncpus = max(1,int(ncpufunc())) |
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163 | 163 | except: |
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164 | 164 | ncpus = 1 |
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165 | 165 | return ncpus |
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166 | 166 |
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