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add memory trace parser to mbed client #789
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,132 @@ | ||
| # mbed debug trace transformer, handling memory trace information | ||
| # Author: Matthias L. Jugel (@thinkberg) | ||
| # | ||
| # Copyright (c) 2018 ubirch GmbH, All Rights Reserved | ||
| # SPDX-License-Identifier: Apache-2.0 | ||
| # | ||
| # Licensed under the Apache License, Version 2.0 (the "License"); | ||
| # you may not use this file except in compliance with the License. | ||
| # | ||
| # You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 | ||
| # | ||
| # Unless required by applicable law or agreed to in writing, software | ||
| # distributed under the License is distributed on an | ||
| # "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, | ||
| # either express or implied. | ||
|
|
||
| import re | ||
| import sys | ||
|
|
||
| from serial.tools.miniterm import Transform | ||
|
|
||
| def debug(s): | ||
| sys.stderr.write("D "+repr(s)+"\n") | ||
|
|
||
| class MbedTransform(Transform): | ||
| mem = {} | ||
| allocated = 0 | ||
| reset = None | ||
| buffer = "" | ||
|
|
||
| def __init__(self, reset_str=None): | ||
| self.reset = reset_str | ||
| if self.reset is not None: | ||
| sys.stderr.write("memory tracing enabled: resetting on '{}'\n".format(self.reset)) | ||
|
|
||
| self.r_malloc = re.compile("([^#]*)#m:0x([0-9a-f]+);0x([0-9a-f]+)-(\\d+)") | ||
| self.r_calloc = re.compile("([^#]*)#c:0x([0-9a-f]+);0x([0-9a-f]+)-(\\d+);(\\d+)") | ||
| self.r_realloc = re.compile("([^#]*)#r:0x([0-9a-f]+);0x([0-9a-f]+)-0x([0-9a-f]+);(\\d+)") | ||
| self.r_free = re.compile("([^#]*)#f:0x([0-9a-f]+);0x([0-9a-f]+)-0x([0-9a-f]+)") | ||
|
|
||
| def rx(self, rx_input): | ||
| # collect lines | ||
| out = "" | ||
| for c in rx_input: | ||
| if c == '\r' or c == '\n': | ||
| if len(self.buffer): | ||
| out += self.trace_line(self.buffer) | ||
| else: | ||
| out += "\n" | ||
| self.buffer = "" | ||
| continue | ||
| else: | ||
| self.buffer += c | ||
| continue | ||
| return out | ||
|
|
||
| def trace_line(self, line): | ||
| # strip newline and carriage return | ||
| line = line.rstrip('\n').rstrip('\r') | ||
|
|
||
| # if we detect the reset keyword, rest the map and memory counter | ||
| if self.reset is not None and self.reset in line: | ||
| self.mem = {} | ||
| self.allocated = 0 | ||
| line += "\n\n\033[91m>> RESET HEAP COUNTERS >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>\033[0m\n" | ||
| line += "\033[4m (NUM) TOTAL [ ADDRESS] CHANGE (COMMENT)\033[0m" | ||
| return line | ||
|
|
||
| # match malloc, realloc and free | ||
| m = self.r_malloc.search(line) | ||
| if m: | ||
| out = "" | ||
| if len(m.group(1)): | ||
| out += m.group(1) | ||
| if m.group(2) == "0x0": | ||
| out += "\033[1m!! (%03d) \033[31mmalloc failed\033[0m (%s)\n" % (len(self.mem), line) | ||
| else: | ||
| self.mem[m.group(2)] = int(m.group(4)) | ||
| self.allocated += int(m.group(4)) | ||
| out += "\033[1m== (%03d) \033[34m%8d\033[0m [%8x] \033[31m+%-6d\033[0m (%s)" % \ | ||
| (len(self.mem), self.allocated, int(m.group(2), 16), int(m.group(4)), line.replace(m.group(1), "")) | ||
| return out | ||
|
|
||
| m = self.r_calloc.search(line) | ||
| if m: | ||
| out = "" | ||
| if len(m.group(1)): | ||
| out += m.group(1) | ||
| if m.group(2) == "0x0": | ||
| out += "\033[1m!! (%03d) \033[31mcalloc failed\033[0m (%s)\n" % (len(self.mem), line) | ||
| else: | ||
| total = int(m.group(4)) * int(m.group(5)) | ||
| self.mem[m.group(2)] = total | ||
| self.allocated += total | ||
| out += "\033[1m== (%03d) \033[34m%8d\033[0m [%8x] \033[31m+%-6d\033[0m (%s)" % \ | ||
| (len(self.mem), self.allocated, int(m.group(2), 16), total, line.replace(m.group(1), "")) | ||
| return out | ||
|
|
||
| m = self.r_realloc.search(line) | ||
| if m: | ||
| out = "" | ||
| if len(m.group(1)): | ||
| out += m.group(1) | ||
| diff = 0 | ||
| if self.mem.has_key(m.group(2)): | ||
| diff = int(m.group(5)) - self.mem[m.group(2)] | ||
| self.mem[m.group(2)] = int(m.group(5)) | ||
| else: | ||
| out += "\033[33m!! (%03d) WARN: realloc() without previous allocation\033[0m (%s)\n" % (len(self.mem), line) | ||
| self.allocated += diff | ||
| out += "\033[1m== (%03d) \033[34m%8d\033[0m [%8x] \033[35m+%-6d\033[0m (%s)" % \ | ||
| (len(self.mem), self.allocated, int(m.group(2), 16), diff, line.replace(m.group(1), "")) | ||
| return out | ||
|
|
||
| m = self.r_free.search(line) | ||
| if m: | ||
| out = "" | ||
| if len(m.group(1)): | ||
| out += m.group(1) | ||
| freed = 0 | ||
| if self.mem.has_key(m.group(4)): | ||
| freed = self.mem[m.group(4)] | ||
| self.allocated -= freed | ||
| del self.mem[m.group(4)] | ||
| else: | ||
| out += "\033[33m!! (%03d) WARN: free(0x%s)\033[0m\n" % (len(self.mem), m.group(4)) | ||
| out += "\033[1m== (%03d) \033[34m%8d\033[0m [%8x] \033[92m-%-6d\033[0m (%s)" % \ | ||
| (len(self.mem), self.allocated, int(m.group(4), 16), freed, line.replace(m.group(1), "")) | ||
| return out | ||
|
|
||
| # print all other lines as is, so we can still use the log functionality | ||
| return line | ||
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This is the place where it runs the data through the trace matcher. The transformer class collects data until it sees either
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Thanks for the reference