1# A basic Plugin that creates performance reports from zprint output 2kern_version = None 3 4def plugin_init(kernel_target, config, lldb_obj, isConnected): 5 """ initialize the common data as required by plugin """ 6 global kern_version 7 kern_version = str(kernel_target.version) 8 9def plugin_execute(command_name, result_output): 10 """ The xnu framework will call this function with output of a command. 11 The options for returning are as follows 12 returns: (status, outstr, further_cmds) 13 status: Boolean - specifying whether plugin execution succeeded(True) or failed. If failed then xnu will stop doing any further work with this command. 14 outstr: str - string output for user to be printed at the prompt 15 further_cmds: [] of str - this holds set of commands to execute at the lldb prompt. Empty array if nothing is required. 16 """ 17 status = True 18 outstr = 'Nothing to be done here' 19 further_cmds = [] 20 further_cmds.append("memstats -- --plugin zprint_perf_log ") 21 22 if command_name != 'zprint' : 23 status = False 24 else: 25 num_zones = len(result_output.split("\n")) -1 26 outstr += "Num of zones analyzed =" + str(num_zones) + "\n" 27 return (status, outstr, further_cmds) 28 29def plugin_cleanup(): 30 """ A cleanup call from xnu which is a signal to wrap up any open file descriptors etc. """ 31 return None 32