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https://github.com/c64scene-ar/llvm-6502.git
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128ce319ec
- With compatibility hack in lit.__init__, so this hopefully shouldn't break anything. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@188040 91177308-0d34-0410-b5e6-96231b3b80d8
141 lines
4.1 KiB
Python
141 lines
4.1 KiB
Python
import errno
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import itertools
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import math
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import os
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import subprocess
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import sys
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def detectCPUs():
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"""
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Detects the number of CPUs on a system. Cribbed from pp.
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"""
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# Linux, Unix and MacOS:
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if hasattr(os, "sysconf"):
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if "SC_NPROCESSORS_ONLN" in os.sysconf_names:
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# Linux & Unix:
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ncpus = os.sysconf("SC_NPROCESSORS_ONLN")
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if isinstance(ncpus, int) and ncpus > 0:
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return ncpus
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else: # OSX:
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return int(capture(['sysctl', '-n', 'hw.ncpu']))
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# Windows:
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if "NUMBER_OF_PROCESSORS" in os.environ:
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ncpus = int(os.environ["NUMBER_OF_PROCESSORS"])
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if ncpus > 0:
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return ncpus
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return 1 # Default
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def mkdir_p(path):
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"""mkdir_p(path) - Make the "path" directory, if it does not exist; this
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will also make directories for any missing parent directories."""
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if not path or os.path.exists(path):
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return
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parent = os.path.dirname(path)
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if parent != path:
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mkdir_p(parent)
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try:
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os.mkdir(path)
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except OSError:
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e = sys.exc_info()[1]
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# Ignore EEXIST, which may occur during a race condition.
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if e.errno != errno.EEXIST:
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raise
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def capture(args, env=None):
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"""capture(command) - Run the given command (or argv list) in a shell and
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return the standard output."""
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p = subprocess.Popen(args, stdout=subprocess.PIPE, stderr=subprocess.PIPE,
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env=env)
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out,_ = p.communicate()
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return out
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def which(command, paths = None):
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"""which(command, [paths]) - Look up the given command in the paths string
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(or the PATH environment variable, if unspecified)."""
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if paths is None:
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paths = os.environ.get('PATH','')
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# Check for absolute match first.
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if os.path.isfile(command):
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return command
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# Would be nice if Python had a lib function for this.
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if not paths:
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paths = os.defpath
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# Get suffixes to search.
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# On Cygwin, 'PATHEXT' may exist but it should not be used.
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if os.pathsep == ';':
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pathext = os.environ.get('PATHEXT', '').split(';')
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else:
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pathext = ['']
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# Search the paths...
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for path in paths.split(os.pathsep):
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for ext in pathext:
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p = os.path.join(path, command + ext)
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if os.path.exists(p):
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return p
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return None
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def checkToolsPath(dir, tools):
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for tool in tools:
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if not os.path.exists(os.path.join(dir, tool)):
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return False;
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return True;
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def whichTools(tools, paths):
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for path in paths.split(os.pathsep):
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if checkToolsPath(path, tools):
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return path
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return None
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def printHistogram(items, title = 'Items'):
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items.sort(key = lambda item: item[1])
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maxValue = max([v for _,v in items])
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# Select first "nice" bar height that produces more than 10 bars.
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power = int(math.ceil(math.log(maxValue, 10)))
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for inc in itertools.cycle((5, 2, 2.5, 1)):
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barH = inc * 10**power
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N = int(math.ceil(maxValue / barH))
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if N > 10:
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break
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elif inc == 1:
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power -= 1
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histo = [set() for i in range(N)]
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for name,v in items:
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bin = min(int(N * v/maxValue), N-1)
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histo[bin].add(name)
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barW = 40
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hr = '-' * (barW + 34)
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print('\nSlowest %s:' % title)
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print(hr)
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for name,value in items[-20:]:
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print('%.2fs: %s' % (value, name))
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print('\n%s Times:' % title)
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print(hr)
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pDigits = int(math.ceil(math.log(maxValue, 10)))
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pfDigits = max(0, 3-pDigits)
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if pfDigits:
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pDigits += pfDigits + 1
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cDigits = int(math.ceil(math.log(len(items), 10)))
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print("[%s] :: [%s] :: [%s]" % ('Range'.center((pDigits+1)*2 + 3),
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'Percentage'.center(barW),
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'Count'.center(cDigits*2 + 1)))
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print(hr)
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for i,row in enumerate(histo):
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pct = float(len(row)) / len(items)
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w = int(barW * pct)
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print("[%*.*fs,%*.*fs) :: [%s%s] :: [%*d/%*d]" % (
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pDigits, pfDigits, i*barH, pDigits, pfDigits, (i+1)*barH,
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'*'*w, ' '*(barW-w), cDigits, len(row), cDigits, len(items)))
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