parameters: (self)
return_statement: return count
docstring: Find the amount of cpu cores to set the default amount of tasks executed in parallel. At
  		runtime the options can be obtained from :py:const:`waflib.Options.options` ::
  
  			from waflib.Options import options
  			njobs = options.jobs
  
  		:return: the amount of cpu cores
  		:rtype: int
docstring_summary: Find the amount of cpu cores to set the default amount of tasks executed in parallel. At
  		runtime the options can be obtained from :py:const:`waflib.Options.options` ::
docstring_tokens: Find the amount of cpu cores to set the default amount of tasks executed in parallel . At runtime the options can be obtained from : py : const : waflib . Options . options ::
function: def jobs(self):
  		"""
  		Find the amount of cpu cores to set the default amount of tasks executed in parallel. At
  		runtime the options can be obtained from :py:const:`waflib.Options.options` ::
  
  			from waflib.Options import options
  			njobs = options.jobs
  
  		:return: the amount of cpu cores
  		:rtype: int
  		"""
  		count = int(os.environ.get('JOBS', 0))
  		if count < 1:
  			if 'NUMBER_OF_PROCESSORS' in os.environ:
  				# on Windows, use the NUMBER_OF_PROCESSORS environment variable
  				count = int(os.environ.get('NUMBER_OF_PROCESSORS', 1))
  			else:
  				# on everything else, first try the POSIX sysconf values
  				if hasattr(os, 'sysconf_names'):
  					if 'SC_NPROCESSORS_ONLN' in os.sysconf_names:
  						count = int(os.sysconf('SC_NPROCESSORS_ONLN'))
  					elif 'SC_NPROCESSORS_CONF' in os.sysconf_names:
  						count = int(os.sysconf('SC_NPROCESSORS_CONF'))
  				if not count and os.name not in ('nt', 'java'):
  					try:
  						tmp = self.cmd_and_log(['sysctl', '-n', 'hw.ncpu'], quiet=0)
  					except Exception:
  						pass
  					else:
  						if re.match('^[0-9]+$', tmp):
  							count = int(tmp)
  		if count < 1:
  			count = 1
  		elif count > 1024:
  			count = 1024
  		return count
function_tokens: def jobs ( self ) : count = int ( os . environ . get ( 'JOBS' , 0 ) ) if count < 1 : if 'NUMBER_OF_PROCESSORS' in os . environ : # on Windows, use the NUMBER_OF_PROCESSORS environment variable count = int ( os . environ . get ( 'NUMBER_OF_PROCESSORS' , 1 ) ) else : # on everything else, first try the POSIX sysconf values if hasattr ( os , 'sysconf_names' ) : if 'SC_NPROCESSORS_ONLN' in os . sysconf_names : count = int ( os . sysconf ( 'SC_NPROCESSORS_ONLN' ) ) elif 'SC_NPROCESSORS_CONF' in os . sysconf_names : count = int ( os . sysconf ( 'SC_NPROCESSORS_CONF' ) ) if not count and os . name not in ( 'nt' , 'java' ) : try : tmp = self . cmd_and_log ( [ 'sysctl' , '-n' , 'hw.ncpu' ] , quiet = 0 ) except Exception : pass else : if re . match ( '^[0-9]+$' , tmp ) : count = int ( tmp ) if count < 1 : count = 1 elif count > 1024 : count = 1024 return count