1# Feed user stacks to ios/speedtracer
2
3def plugin_init(kernel_target, config, lldb_obj, isConnected):
4    """ initialize the common data as required by plugin """
5    return None
6
7def 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
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
33
34