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[opt-viewer] For single-process, fall back on map instead of Pool.map 

This allows for nicer backtrace and debugging when -j1 is passed:

  $ opt-viewer.py CMakeFiles/LLVMScalarOpts.dir/LoopVersioningLICM.cpp.opt.yaml html
  Traceback (most recent call last):
    File "/org/llvm/utils/opt-viewer/opt-viewer.py", line 405, in <module>
      generate_report(pmap, all_remarks, file_remarks, args.source_dir, args.output_dir)
    File "/org/llvm/utils/opt-viewer/opt-viewer.py", line 362, in generate_report
      pmap(_render_file_bound, file_remarks.items())
    File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/multiprocessing/pool.py", line 251, in map
      return self.map_async(func, iterable, chunksize).get()
    File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/multiprocessing/pool.py", line 567, in get
      raise self._value
  Exception: blah

  $ opt-viewer.py -j 1 CMakeFiles/LLVMScalarOpts.dir/LoopVersioningLICM.cpp.opt.yaml html
  Traceback (most recent call last):
    File "/org/llvm/utils/opt-viewer/opt-viewer.py", line 405, in <module>
      generate_report(pmap, all_remarks, file_remarks, args.source_dir, args.output_dir)
    File "/org/llvm/utils/opt-viewer/opt-viewer.py", line 362, in generate_report
      pmap(_render_file_bound, file_remarks.items())
    File "/org/llvm/utils/opt-viewer/opt-viewer.py", line 317, in _render_file
      SourceFileRenderer(source_dir, output_dir, filename).render(remarks)
    File "/org/llvm/utils/opt-viewer/opt-viewer.py", line 168, in __init__
      raise Exception("blah")
  Exception: blah

llvm-svn: 295080
This commit is contained in:
Adam Nemet 2017-02-14 18:18:58 +00:00
parent d3b5641586
commit 4f6decadc5
1 changed files with 12 additions and 7 deletions
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17
llvm/utils/opt-viewer/opt-viewer.py
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@ -316,8 +316,8 @@ def _render_file(source_dir, output_dir, ctx, entry):
SourceFileRenderer(source_dir, output_dir, filename).render(remarks)
def gather_results(pool, filenames):
remarks = pool.map(get_remarks, filenames)
def gather_results(pmap, filenames):
remarks = pmap(get_remarks, filenames)
def merge_file_remarks(file_remarks_job, all_remarks, merged):
for filename, d in file_remarks_job.iteritems():
@ -348,7 +348,7 @@ def map_remarks(all_remarks):
context.caller_loc[caller] = arg['DebugLoc']
def generate_report(pool, all_remarks, file_remarks, source_dir, output_dir):
def generate_report(pmap, all_remarks, file_remarks, source_dir, output_dir):
try:
os.makedirs(output_dir)
except OSError as e:
@ -358,7 +358,7 @@ def generate_report(pool, all_remarks, file_remarks, source_dir, output_dir):
raise
_render_file_bound = functools.partial(_render_file, source_dir, output_dir, context)
pool.map(_render_file_bound, file_remarks.items())
pmap(_render_file_bound, file_remarks.items())
if context.should_display_hotness():
sorted_remarks = sorted(all_remarks.itervalues(), key=lambda r: (r.Hotness, r.__dict__), reverse=True)
@ -391,9 +391,14 @@ if __name__ == '__main__':
parser.print_help()
sys.exit(1)
if args.jobs == 1:
pmap = map
else:
pool = Pool(processes=args.jobs)
all_remarks, file_remarks = gather_results(pool, args.yaml_files)
pmap = pool.map
all_remarks, file_remarks = gather_results(pmap, args.yaml_files)
map_remarks(all_remarks)
generate_report(pool, all_remarks, file_remarks, args.source_dir, args.output_dir)
generate_report(pmap, all_remarks, file_remarks, args.source_dir, args.output_dir)