diff options
Diffstat (limited to 'Debug/poor-mans-profiler.sh')
-rwxr-xr-x | Debug/poor-mans-profiler.sh | 137 |
1 files changed, 113 insertions, 24 deletions
diff --git a/Debug/poor-mans-profiler.sh b/Debug/poor-mans-profiler.sh index 460b28d0a..7657e4dc7 100755 --- a/Debug/poor-mans-profiler.sh +++ b/Debug/poor-mans-profiler.sh @@ -84,7 +84,7 @@ gdberrfile=/tmp/pmpn-gdberr.log # cd $root -if [[ $nsamples > 0 && "$taskname" != "" ]] +if [[ $nsamples > 0 ]] then [[ $append = 0 ]] && (rm -f $stacksfile; echo "Old stacks removed") @@ -92,12 +92,20 @@ then for x in $(seq 1 $nsamples) do - arm-none-eabi-gdb $elf --batch -ex "set print asm-demangle on" \ - -ex "source $root/Debug/Nuttx.py" \ - -ex "show mybt $taskname" \ - 2> $gdberrfile \ - | sed -n 's/0\.0:\(#.*\)/\1/p' \ - >> $stacksfile + if [[ "$taskname" = "" ]] + then + arm-none-eabi-gdb $elf --batch -ex "set print asm-demangle on" -ex bt \ + 2> $gdberrfile \ + | sed -n 's/\(#.*\)/\1/p' \ + >> $stacksfile + else + arm-none-eabi-gdb $elf --batch -ex "set print asm-demangle on" \ + -ex "source $root/Debug/Nuttx.py" \ + -ex "show mybt $taskname" \ + 2> $gdberrfile \ + | sed -n 's/0\.0:\(#.*\)/\1/p' \ + >> $stacksfile + fi echo -e '\n\n' >> $stacksfile echo -ne "\r$x/$nsamples" sleep $sleeptime @@ -106,7 +114,7 @@ then echo echo "Stacks saved to $stacksfile" else - echo "Sampling skipped - set 'nsamples' and 'taskname' to re-sample." + echo "Sampling skipped - set 'nsamples' to re-sample." fi # @@ -114,22 +122,103 @@ fi # [ -f $stacksfile ] || die "Where are the stack samples?" -cat $stacksfile | perl -e 'use File::Basename; -my $current = ""; -my %stacks; -while(<>) { - if(m/^#[0-9]*\s*0x[a-zA-Z0-9]*\s*in (.*) at (.*)/) { - my $x = $1 eq "None" ? basename($2) : ("$1 at " . basename($2)); - if ($current eq "") { $current = $x; } - else { $current = $x . ";" . $current; } - } elsif(!($current eq "")) { - $stacks{$current} += 1; - $current = ""; - } -} -foreach my $k (sort { $a cmp $b } keys %stacks) { - print "$k $stacks{$k}\n"; -}' > $foldfile +cat $stacksfile | python -c " +# +# This stack folder correctly handles C++ types. +# + +from __future__ import print_function, division +import fileinput, collections, os + +def enforce(x, msg='Invalid input'): + if not x: + raise Exception(msg) + +def split_first_part_with_parens(line): + LBRACES = {'(':'()', '<':'<>', '[':'[]', '{':'{}'} + RBRACES = {')':'()', '>':'<>', ']':'[]', '}':'{}'} + braces = collections.defaultdict(int) + out = '' + for ch in line: + out += ch + # special cases + if out.endswith('operator>') or out.endswith('operator->'): # gotta love c++ + braces['<>'] += 1 + if out.endswith('operator<'): + braces['<>'] -= 1 + # counting parens + if ch in LBRACES.keys(): + braces[LBRACES[ch]] += 1 + if ch in RBRACES.keys(): + braces[RBRACES[ch]] -= 1 + # sanity check + for v in braces.values(): + enforce(v >= 0, 'Unaligned braces: ' + str(dict(braces))) + # termination condition + if ch == ' ' and sum(braces.values()) == 0: + break + out = out.strip() + return out, line[len(out):] + +def parse(line): + def take_path(line, output): + line = line.strip() + if line.startswith('at '): + line = line[3:].strip() + if line: + output['file_full_path'] = line.rsplit(':', 1)[0].strip() + output['file_base_name'] = os.path.basename(output['file_full_path']) + output['line'] = int(line.rsplit(':', 1)[1]) + return output + + def take_args(line, output): + line = line.lstrip() + if line[0] == '(': + output['args'], line = split_first_part_with_parens(line) + return take_path(line.lstrip(), output) + + def take_function(line, output): + output['function'], line = split_first_part_with_parens(line.lstrip()) + return take_args(line.lstrip(), output) + + def take_mem_loc(line, output): + line = line.lstrip() + if line.startswith('0x'): + end = line.find(' ') + num = line[:end] + output['memloc'] = int(num, 16) + line = line[end:].lstrip() + end = line.find(' ') + enforce(line[:end] == 'in') + line = line[end:].lstrip() + return take_function(line, output) + + def take_frame_num(line, output): + line = line.lstrip() + enforce(line[0] == '#') + end = line.find(' ') + num = line[1:end] + output['frame_num'] = int(num) + return take_mem_loc(line[end:], output) + + return take_frame_num(line, {}) + +stacks = collections.defaultdict(int) +current = '' + +for line in fileinput.input(): + line = line.strip() + if line: + inf = parse(line) + fun = inf['function'] + current = (fun + ';' + current) if current else fun + elif current: + stacks[current] += 1 + current = '' + +for s, f in sorted(stacks.items(), key=lambda (s, f): s): + print(s, f) +" > $foldfile echo "Folded stacks saved to $foldfile" |