forked from OSchip/llvm-project
56 lines
2.4 KiB
Python
56 lines
2.4 KiB
Python
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#!/usr/bin/python
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import lldb
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import commands
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import optparse
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import shlex
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def stack_frames(debugger, command, result, dict):
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command_args = shlex.split(command)
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usage = "usage: %prog [options] <PATH> [PATH ...]"
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description='''This command will enumerate all stack frames, print the stack size for each, and print an aggregation of which functions have the largest stack frame sizes at the end.'''
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parser = optparse.OptionParser(description=description, prog='ls',usage=usage)
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parser.add_option('-v', '--verbose', action='store_true', dest='verbose', help='display verbose debug info', default=False)
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try:
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(options, args) = parser.parse_args(command_args)
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except:
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return
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frame_info = {}
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for thread in lldb.process:
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last_frame = None
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print "thread %u" % (thread.id)
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for frame in thread.frames:
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if last_frame:
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frame_size = 0
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if frame.idx == 1:
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if frame.fp == last_frame.fp:
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# No frame one the first frame (might be right at the entry point)
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first_frame_size = 0
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frame_size = frame.fp - frame.sp
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else:
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# First frame that has a valid size
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first_frame_size = last_frame.fp - last_frame.sp
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print "frame[%u] size 0x%x" % (last_frame.idx, first_frame_size)
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if first_frame_size:
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name = last_frame.name
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if name not in frame_info:
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frame_info[name] = first_frame_size
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else:
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frame_info[name] += first_frame_size
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else:
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# Second or higher frame
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frame_size = frame.fp - last_frame.fp
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print "frame[%u] size 0x%x" % (frame.idx, frame_size)
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if frame_size > 0:
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name = frame.name
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if name not in frame_info:
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frame_info[name] = frame_size
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else:
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frame_info[name] += frame_size
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last_frame = frame
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print frame_info
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lldb.debugger.HandleCommand("command script add -f stacks.stack_frames stack_frames")
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print "A new command called 'stack_frames' was added, type 'stack_frames --help' for more information."
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