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1#!/usr/bin/env python
2
3from __future__ import print_function
4
5import io
6import yaml
7# Try to use the C parser.
8try:
9    from yaml import CLoader as Loader
10except ImportError:
11    print("For faster parsing, you may want to install libYAML for PyYAML")
12    from yaml import Loader
13
14import html
15from collections import defaultdict
16import fnmatch
17import functools
18from multiprocessing import Lock
19import os, os.path
20import subprocess
21try:
22    # The previously builtin function `intern()` was moved
23    # to the `sys` module in Python 3.
24    from sys import intern
25except:
26    pass
27
28import re
29
30import optpmap
31
32try:
33    dict.iteritems
34except AttributeError:
35    # Python 3
36    def itervalues(d):
37        return iter(d.values())
38    def iteritems(d):
39        return iter(d.items())
40else:
41    # Python 2
42    def itervalues(d):
43        return d.itervalues()
44    def iteritems(d):
45        return d.iteritems()
46
47
48def html_file_name(filename):
49    return filename.replace('/', '_').replace('#', '_') + ".html"
50
51
52def make_link(File, Line):
53    return "\"{}#L{}\"".format(html_file_name(File), Line)
54
55
56class Remark(yaml.YAMLObject):
57    # Work-around for http://pyyaml.org/ticket/154.
58    yaml_loader = Loader
59
60    default_demangler = 'c++filt -n'
61    demangler_proc = None
62
63    @classmethod
64    def set_demangler(cls, demangler):
65        cls.demangler_proc = subprocess.Popen(demangler.split(), stdin=subprocess.PIPE, stdout=subprocess.PIPE)
66        cls.demangler_lock = Lock()
67
68    @classmethod
69    def demangle(cls, name):
70        with cls.demangler_lock:
71            cls.demangler_proc.stdin.write((name + '\n').encode('utf-8'))
72            cls.demangler_proc.stdin.flush()
73            return cls.demangler_proc.stdout.readline().rstrip().decode('utf-8')
74
75    # Intern all strings since we have lot of duplication across filenames,
76    # remark text.
77    #
78    # Change Args from a list of dicts to a tuple of tuples.  This saves
79    # memory in two ways.  One, a small tuple is significantly smaller than a
80    # small dict.  Two, using tuple instead of list allows Args to be directly
81    # used as part of the key (in Python only immutable types are hashable).
82    def _reduce_memory(self):
83        self.Pass = intern(self.Pass)
84        self.Name = intern(self.Name)
85        try:
86            # Can't intern unicode strings.
87            self.Function = intern(self.Function)
88        except:
89            pass
90
91        def _reduce_memory_dict(old_dict):
92            new_dict = dict()
93            for (k, v) in iteritems(old_dict):
94                if type(k) is str:
95                    k = intern(k)
96
97                if type(v) is str:
98                    v = intern(v)
99                elif type(v) is dict:
100                    # This handles [{'Caller': ..., 'DebugLoc': { 'File': ... }}]
101                    v = _reduce_memory_dict(v)
102                new_dict[k] = v
103            return tuple(new_dict.items())
104
105        self.Args = tuple([_reduce_memory_dict(arg_dict) for arg_dict in self.Args])
106
107    # The inverse operation of the dictonary-related memory optimization in
108    # _reduce_memory_dict.  E.g.
109    #     (('DebugLoc', (('File', ...) ... ))) -> [{'DebugLoc': {'File': ...} ....}]
110    def recover_yaml_structure(self):
111        def tuple_to_dict(t):
112            d = dict()
113            for (k, v) in t:
114                if type(v) is tuple:
115                    v = tuple_to_dict(v)
116                d[k] = v
117            return d
118
119        self.Args = [tuple_to_dict(arg_tuple) for arg_tuple in self.Args]
120
121    def canonicalize(self):
122        if not hasattr(self, 'Hotness'):
123            self.Hotness = 0
124        if not hasattr(self, 'Args'):
125            self.Args = []
126        self._reduce_memory()
127
128    @property
129    def File(self):
130        return self.DebugLoc['File']
131
132    @property
133    def Line(self):
134        return int(self.DebugLoc['Line'])
135
136    @property
137    def Column(self):
138        return self.DebugLoc['Column']
139
140    @property
141    def DebugLocString(self):
142        return "{}:{}:{}".format(self.File, self.Line, self.Column)
143
144    @property
145    def DemangledFunctionName(self):
146        return self.demangle(self.Function)
147
148    @property
149    def Link(self):
150        return make_link(self.File, self.Line)
151
152    def getArgString(self, mapping):
153        mapping = dict(list(mapping))
154        dl = mapping.get('DebugLoc')
155        if dl:
156            del mapping['DebugLoc']
157
158        assert(len(mapping) == 1)
159        (key, value) = list(mapping.items())[0]
160
161        if key == 'Caller' or key == 'Callee' or key == 'DirectCallee':
162            value = html.escape(self.demangle(value))
163
164        if dl and key != 'Caller':
165            dl_dict = dict(list(dl))
166            return u"<a href={}>{}</a>".format(
167                make_link(dl_dict['File'], dl_dict['Line']), value)
168        else:
169            return value
170
171    # Return a cached dictionary for the arguments.  The key for each entry is
172    # the argument key (e.g. 'Callee' for inlining remarks.  The value is a
173    # list containing the value (e.g. for 'Callee' the function) and
174    # optionally a DebugLoc.
175    def getArgDict(self):
176        if hasattr(self, 'ArgDict'):
177            return self.ArgDict
178        self.ArgDict = {}
179        for arg in self.Args:
180            if len(arg) == 2:
181                if arg[0][0] == 'DebugLoc':
182                    dbgidx = 0
183                else:
184                    assert(arg[1][0] == 'DebugLoc')
185                    dbgidx = 1
186
187                key = arg[1 - dbgidx][0]
188                entry = (arg[1 - dbgidx][1], arg[dbgidx][1])
189            else:
190                arg = arg[0]
191                key = arg[0]
192                entry = (arg[1], )
193
194            self.ArgDict[key] = entry
195        return self.ArgDict
196
197    def getDiffPrefix(self):
198        if hasattr(self, 'Added'):
199            if self.Added:
200                return '+'
201            else:
202                return '-'
203        return ''
204
205    @property
206    def PassWithDiffPrefix(self):
207        return self.getDiffPrefix() + self.Pass
208
209    @property
210    def message(self):
211        # Args is a list of mappings (dictionaries)
212        values = [self.getArgString(mapping) for mapping in self.Args]
213        return "".join(values)
214
215    @property
216    def RelativeHotness(self):
217        if self.max_hotness:
218            return "{0:.2f}%".format(self.Hotness * 100. / self.max_hotness)
219        else:
220            return ''
221
222    @property
223    def key(self):
224        return (self.__class__, self.PassWithDiffPrefix, self.Name, self.File,
225                self.Line, self.Column, self.Function, self.Args)
226
227    def __hash__(self):
228        return hash(self.key)
229
230    def __eq__(self, other):
231        return self.key == other.key
232
233    def __repr__(self):
234        return str(self.key)
235
236
237class Analysis(Remark):
238    yaml_tag = '!Analysis'
239
240    @property
241    def color(self):
242        return "white"
243
244
245class AnalysisFPCommute(Analysis):
246    yaml_tag = '!AnalysisFPCommute'
247
248
249class AnalysisAliasing(Analysis):
250    yaml_tag = '!AnalysisAliasing'
251
252
253class Passed(Remark):
254    yaml_tag = '!Passed'
255
256    @property
257    def color(self):
258        return "green"
259
260
261class Missed(Remark):
262    yaml_tag = '!Missed'
263
264    @property
265    def color(self):
266        return "red"
267
268class Failure(Missed):
269    yaml_tag = '!Failure'
270
271def get_remarks(input_file, filter_=None):
272    max_hotness = 0
273    all_remarks = dict()
274    file_remarks = defaultdict(functools.partial(defaultdict, list))
275
276    with io.open(input_file, encoding = 'utf-8') as f:
277        docs = yaml.load_all(f, Loader=Loader)
278
279        filter_e = None
280        if filter_:
281            filter_e = re.compile(filter_)
282        for remark in docs:
283            remark.canonicalize()
284            # Avoid remarks withoug debug location or if they are duplicated
285            if not hasattr(remark, 'DebugLoc') or remark.key in all_remarks:
286                continue
287
288            if filter_e and not filter_e.search(remark.Pass):
289                continue
290
291            all_remarks[remark.key] = remark
292
293            file_remarks[remark.File][remark.Line].append(remark)
294
295            # If we're reading a back a diff yaml file, max_hotness is already
296            # captured which may actually be less than the max hotness found
297            # in the file.
298            if hasattr(remark, 'max_hotness'):
299                max_hotness = remark.max_hotness
300            max_hotness = max(max_hotness, remark.Hotness)
301
302    return max_hotness, all_remarks, file_remarks
303
304
305def gather_results(filenames, num_jobs, should_print_progress, filter_=None):
306    if should_print_progress:
307        print('Reading YAML files...')
308    if not Remark.demangler_proc:
309        Remark.set_demangler(Remark.default_demangler)
310    remarks = optpmap.pmap(
311        get_remarks, filenames, num_jobs, should_print_progress, filter_)
312    max_hotness = max(entry[0] for entry in remarks)
313
314    def merge_file_remarks(file_remarks_job, all_remarks, merged):
315        for filename, d in iteritems(file_remarks_job):
316            for line, remarks in iteritems(d):
317                for remark in remarks:
318                    # Bring max_hotness into the remarks so that
319                    # RelativeHotness does not depend on an external global.
320                    remark.max_hotness = max_hotness
321                    if remark.key not in all_remarks:
322                        merged[filename][line].append(remark)
323
324    all_remarks = dict()
325    file_remarks = defaultdict(functools.partial(defaultdict, list))
326    for _, all_remarks_job, file_remarks_job in remarks:
327        merge_file_remarks(file_remarks_job, all_remarks, file_remarks)
328        all_remarks.update(all_remarks_job)
329
330    return all_remarks, file_remarks, max_hotness != 0
331
332
333def find_opt_files(*dirs_or_files):
334    all = []
335    for dir_or_file in dirs_or_files:
336        if os.path.isfile(dir_or_file):
337            all.append(dir_or_file)
338        else:
339            for dir, subdirs, files in os.walk(dir_or_file):
340                # Exclude mounted directories and symlinks (os.walk default).
341                subdirs[:] = [d for d in subdirs
342                              if not os.path.ismount(os.path.join(dir, d))]
343                for file in files:
344                    if fnmatch.fnmatch(file, "*.opt.yaml*"):
345                        all.append(os.path.join(dir, file))
346    return all
347