tools/lldbmacros/plugins/iosspeedtracer.py

   1 # Feed user stacks to ios/speedtracer
   2
   3 def plugin_init(kernel_target, config, lldb_obj, isConnected):
   4     """ initialize the common data as required by plugin """
   5     return None
   6
   7 def plugin_execute(command_name, result_output):
   8     """ The xnu framework will call this function with output of a command.
   9         The options for returning are as follows
  10         returns:  (status, outstr, further_cmds)
  11            status: Boolean - specifying whether plugin execution succeeded(True) or failed. If failed then xnu will stop doing any further work with this command.
  12            outstr: str - string output for user to be printed at the prompt
  13            further_cmds: [] of str - this holds set of commands to execute at the lldb prompt. Empty array if nothing is required.
  14     """
  15     import subprocess,os
  16     status = True
  17     outstr = ''
  18     further_cmds = []
  19
  20     if command_name != 'showtaskuserstacks' :
  21         status = False
  22     else:
  23         ios_process = subprocess.Popen([os.path.join(os.path.dirname(os.path.abspath(__file__)), "iosspeedtracer.sh")], stdin=subprocess.PIPE, stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
  24
  25         outstr += ios_process.communicate(input=result_output)[0]
  26
  27     return (status, outstr, further_cmds)
  28
  29 def plugin_cleanup():
  30     """ A cleanup call from xnu which is a signal to wrap up any open file descriptors etc. """
  31     return None
  32
  33