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4710c53d | 1 | import _hotshot\r |
2 | import os.path\r | |
3 | import parser\r | |
4 | import symbol\r | |
5 | \r | |
6 | from _hotshot import \\r | |
7 | WHAT_ENTER, \\r | |
8 | WHAT_EXIT, \\r | |
9 | WHAT_LINENO, \\r | |
10 | WHAT_DEFINE_FILE, \\r | |
11 | WHAT_DEFINE_FUNC, \\r | |
12 | WHAT_ADD_INFO\r | |
13 | \r | |
14 | \r | |
15 | __all__ = ["LogReader", "ENTER", "EXIT", "LINE"]\r | |
16 | \r | |
17 | \r | |
18 | ENTER = WHAT_ENTER\r | |
19 | EXIT = WHAT_EXIT\r | |
20 | LINE = WHAT_LINENO\r | |
21 | \r | |
22 | \r | |
23 | class LogReader:\r | |
24 | def __init__(self, logfn):\r | |
25 | # fileno -> filename\r | |
26 | self._filemap = {}\r | |
27 | # (fileno, lineno) -> filename, funcname\r | |
28 | self._funcmap = {}\r | |
29 | \r | |
30 | self._reader = _hotshot.logreader(logfn)\r | |
31 | self._nextitem = self._reader.next\r | |
32 | self._info = self._reader.info\r | |
33 | if 'current-directory' in self._info:\r | |
34 | self.cwd = self._info['current-directory']\r | |
35 | else:\r | |
36 | self.cwd = None\r | |
37 | \r | |
38 | # This mirrors the call stack of the profiled code as the log\r | |
39 | # is read back in. It contains tuples of the form:\r | |
40 | #\r | |
41 | # (file name, line number of function def, function name)\r | |
42 | #\r | |
43 | self._stack = []\r | |
44 | self._append = self._stack.append\r | |
45 | self._pop = self._stack.pop\r | |
46 | \r | |
47 | def close(self):\r | |
48 | self._reader.close()\r | |
49 | \r | |
50 | def fileno(self):\r | |
51 | """Return the file descriptor of the log reader's log file."""\r | |
52 | return self._reader.fileno()\r | |
53 | \r | |
54 | def addinfo(self, key, value):\r | |
55 | """This method is called for each additional ADD_INFO record.\r | |
56 | \r | |
57 | This can be overridden by applications that want to receive\r | |
58 | these events. The default implementation does not need to be\r | |
59 | called by alternate implementations.\r | |
60 | \r | |
61 | The initial set of ADD_INFO records do not pass through this\r | |
62 | mechanism; this is only needed to receive notification when\r | |
63 | new values are added. Subclasses can inspect self._info after\r | |
64 | calling LogReader.__init__().\r | |
65 | """\r | |
66 | pass\r | |
67 | \r | |
68 | def get_filename(self, fileno):\r | |
69 | try:\r | |
70 | return self._filemap[fileno]\r | |
71 | except KeyError:\r | |
72 | raise ValueError, "unknown fileno"\r | |
73 | \r | |
74 | def get_filenames(self):\r | |
75 | return self._filemap.values()\r | |
76 | \r | |
77 | def get_fileno(self, filename):\r | |
78 | filename = os.path.normcase(os.path.normpath(filename))\r | |
79 | for fileno, name in self._filemap.items():\r | |
80 | if name == filename:\r | |
81 | return fileno\r | |
82 | raise ValueError, "unknown filename"\r | |
83 | \r | |
84 | def get_funcname(self, fileno, lineno):\r | |
85 | try:\r | |
86 | return self._funcmap[(fileno, lineno)]\r | |
87 | except KeyError:\r | |
88 | raise ValueError, "unknown function location"\r | |
89 | \r | |
90 | # Iteration support:\r | |
91 | # This adds an optional (& ignored) parameter to next() so that the\r | |
92 | # same bound method can be used as the __getitem__() method -- this\r | |
93 | # avoids using an additional method call which kills the performance.\r | |
94 | \r | |
95 | def next(self, index=0):\r | |
96 | while 1:\r | |
97 | # This call may raise StopIteration:\r | |
98 | what, tdelta, fileno, lineno = self._nextitem()\r | |
99 | \r | |
100 | # handle the most common cases first\r | |
101 | \r | |
102 | if what == WHAT_ENTER:\r | |
103 | filename, funcname = self._decode_location(fileno, lineno)\r | |
104 | t = (filename, lineno, funcname)\r | |
105 | self._append(t)\r | |
106 | return what, t, tdelta\r | |
107 | \r | |
108 | if what == WHAT_EXIT:\r | |
109 | try:\r | |
110 | return what, self._pop(), tdelta\r | |
111 | except IndexError:\r | |
112 | raise StopIteration\r | |
113 | \r | |
114 | if what == WHAT_LINENO:\r | |
115 | filename, firstlineno, funcname = self._stack[-1]\r | |
116 | return what, (filename, lineno, funcname), tdelta\r | |
117 | \r | |
118 | if what == WHAT_DEFINE_FILE:\r | |
119 | filename = os.path.normcase(os.path.normpath(tdelta))\r | |
120 | self._filemap[fileno] = filename\r | |
121 | elif what == WHAT_DEFINE_FUNC:\r | |
122 | filename = self._filemap[fileno]\r | |
123 | self._funcmap[(fileno, lineno)] = (filename, tdelta)\r | |
124 | elif what == WHAT_ADD_INFO:\r | |
125 | # value already loaded into self.info; call the\r | |
126 | # overridable addinfo() handler so higher-level code\r | |
127 | # can pick up the new value\r | |
128 | if tdelta == 'current-directory':\r | |
129 | self.cwd = lineno\r | |
130 | self.addinfo(tdelta, lineno)\r | |
131 | else:\r | |
132 | raise ValueError, "unknown event type"\r | |
133 | \r | |
134 | def __iter__(self):\r | |
135 | return self\r | |
136 | \r | |
137 | #\r | |
138 | # helpers\r | |
139 | #\r | |
140 | \r | |
141 | def _decode_location(self, fileno, lineno):\r | |
142 | try:\r | |
143 | return self._funcmap[(fileno, lineno)]\r | |
144 | except KeyError:\r | |
145 | #\r | |
146 | # This should only be needed when the log file does not\r | |
147 | # contain all the DEFINE_FUNC records needed to allow the\r | |
148 | # function name to be retrieved from the log file.\r | |
149 | #\r | |
150 | if self._loadfile(fileno):\r | |
151 | filename = funcname = None\r | |
152 | try:\r | |
153 | filename, funcname = self._funcmap[(fileno, lineno)]\r | |
154 | except KeyError:\r | |
155 | filename = self._filemap.get(fileno)\r | |
156 | funcname = None\r | |
157 | self._funcmap[(fileno, lineno)] = (filename, funcname)\r | |
158 | return filename, funcname\r | |
159 | \r | |
160 | def _loadfile(self, fileno):\r | |
161 | try:\r | |
162 | filename = self._filemap[fileno]\r | |
163 | except KeyError:\r | |
164 | print "Could not identify fileId", fileno\r | |
165 | return 1\r | |
166 | if filename is None:\r | |
167 | return 1\r | |
168 | absname = os.path.normcase(os.path.join(self.cwd, filename))\r | |
169 | \r | |
170 | try:\r | |
171 | fp = open(absname)\r | |
172 | except IOError:\r | |
173 | return\r | |
174 | st = parser.suite(fp.read())\r | |
175 | fp.close()\r | |
176 | \r | |
177 | # Scan the tree looking for def and lambda nodes, filling in\r | |
178 | # self._funcmap with all the available information.\r | |
179 | funcdef = symbol.funcdef\r | |
180 | lambdef = symbol.lambdef\r | |
181 | \r | |
182 | stack = [st.totuple(1)]\r | |
183 | \r | |
184 | while stack:\r | |
185 | tree = stack.pop()\r | |
186 | try:\r | |
187 | sym = tree[0]\r | |
188 | except (IndexError, TypeError):\r | |
189 | continue\r | |
190 | if sym == funcdef:\r | |
191 | self._funcmap[(fileno, tree[2][2])] = filename, tree[2][1]\r | |
192 | elif sym == lambdef:\r | |
193 | self._funcmap[(fileno, tree[1][2])] = filename, "<lambda>"\r | |
194 | stack.extend(list(tree[1:]))\r |