yotamr/traces

API tracing framework for Linux C/C++ applications

traces's Issues

objdump - no such file

Trying to apply traces on my code, I get failures during linkage.
I get few errors of "no such file" (32 to be exact) of the following:
objdump: '/tmp/ccLK5eao.ltrans0.ltrans.o': No such file

and that is followed by long list of the following messages:

.o (symbol from plugin):(.text+0x0): first defined here
*.o (symbol from plugin): In function find_name': (.text+0x0): multiple definition ofnull_type

I've installed clang and llvm and they seem to be in place, can you recommend a way to see if it is really installed correctly?
Thanks in advance!

[SOLVED] Undefined reference when compiling demo app

I get this error when trying to compile demo app:

/mnt/space/dev/traces-dev/traces/ccwrap.py g++ -L/mnt/space/dev/traces-dev/traces demo.o ../libtraceuser.a -lrt -L. -o demo
demo.o:demo.cpp:function calculate(calculation_type, int): error: undefined reference to '__static_log_information_start'
demo.o:demo.cpp:function calculate(calculation_type, int): error: undefined reference to '__static_log_information_start'
demo.o:demo.cpp:function calculate(calculation_type, int): error: undefined reference to '__static_log_information_start'
demo.o:demo.cpp:function calculate(calculation_type, int): error: undefined reference to '__static_log_information_start'
libtrace/trace_user.c:70: error: undefined reference to '__type_information_start'
libtrace/trace_user.c:116: error: undefined reference to '__type_information_start'
libtrace/trace_user.c:255: error: undefined reference to '__type_information_start'
libtrace/trace_user.c:261: error: undefined reference to '__static_log_information_end'
collect2: error: ld returned 1 exit status
make: *** [demo] Error 1

Any ideas what's wrong? Traces libraries were compiled fine...

interactive_reader: how to scroll to left and right?

Here's a screenshot of console window with interactive_reader ui, 1920 pixels wide:

I can't read lines entirely, left / right arrow keys doesn't work, am I missing some hotkeys? Thanks!

Clang version requirements

It seems that it really has to be exactly 3.0 -

It won't compile with clang 2.7
It won't compile with clang 3.2

I think it's a little restrictive. Either way I'd add a note about it.

demo.o.pp.i doesn't seem to be generated

/home/christer/Source/traces/ccwrap.py g++ -I.. -c -o demo.o demo.cpp
demo.o.pp.i crap
g++ -I.. -E -o demo.o.pp demo.cpp -D __TRACE_INSTRUMENTATION -include /home/chri
ster/Source/traces/trace_lib.h -include /home/christer/Source/traces/trace_user.
h
/usr/local/bin/clang -cc1 -Wno-attributes -fcolor-diagnostics -fgnu-keywords -st
d=gnu++11 -x c++ -fcxx-exceptions demo.o.pp -o demo.o.pp.i -I.. -load /home/chri
ster/Source/traces/trace_instrumentor/trace_instrumentor.so -plugin trace-instru
ment
Traceback (most recent call last):
File "/home/christer/Source/traces/ccwrap.py", line 146, in
sys.exit(main())
File "/home/christer/Source/traces/ccwrap.py", line 143, in main
os.unlink(out_pp_file)
OSError: [Errno 2] No such file or directory: 'demo.o.pp.i'
make: *** [demo.o] Error 1

Search raises an exception

I tried searching for FATAL (S keyboard shortcut) and got it:

root@guyr-ubuntu:~/traces# python interactive_reader/ui.py /mnt/box-ci13/1/mnt/logs/trace.134083499142.dump 

Traceback (most recent call last):
  File "interactive_reader/ui.py", line 518, in <module>
    main()
  File "interactive_reader/ui.py", line 515, in main
    reader_ui.run(sys.argv[1])
  File "interactive_reader/ui.py", line 510, in run
    self.loop.run()
  File "/usr/lib/pymodules/python2.7/urwid/main_loop.py", line 170, in run
    self.screen.run_wrapper(self._run)
  File "/usr/lib/pymodules/python2.7/urwid/raw_display.py", line 234, in run_wrapper
    return fn()
  File "/usr/lib/pymodules/python2.7/urwid/main_loop.py", line 188, in _run
    self.event_loop.run()
  File "/usr/lib/pymodules/python2.7/urwid/main_loop.py", line 498, in run
    self._loop()
  File "/usr/lib/pymodules/python2.7/urwid/main_loop.py", line 523, in _loop
    self._watch_files[fd]()
  File "/usr/lib/pymodules/python2.7/urwid/main_loop.py", line 234, in _update
    self.process_input(keys)
  File "/usr/lib/pymodules/python2.7/urwid/main_loop.py", line 323, in process_input
    self.unhandled_input(k)
  File "/usr/lib/pymodules/python2.7/urwid/main_loop.py", line 350, in unhandled_input
    return self._unhandled_input(input)
  File "interactive_reader/ui.py", line 484, in _handle_input
    if input == 'enter' and self._main_frame.get_focus() == 'footer':
AttributeError: 'Frame' object has no attribute 'get_focus'

"script_file" not in local scope, ldwrap.py

I get an error on this line: https://github.com/yotamr/traces/blob/master/ldwrap.py#L146 complaining that script_file is no global. I added global statements to main() and the linked function and it seems to work, but it doesn't seem like the right solution.

trace_dumper: Write records to network

Type-aware tracing of structures

I have updated demo.cpp to pass an entire structure to a trace (code attached in the snapshot). However, the output of trace_dumper -o (and of trace_reader) contains an empty string for the 'test' variable. I was expecting to see the struct's fields traced.

Is this a bug in traces? Or am I doing anything wrong?
traces_demo_cpp

Update (2014.05.25)
It seems that the function format_typed_params (trace_parser.c) does not handle TRACE_PARAM_FLAG_RECORD. So, struct-like params are not being formatted in the output.

What is the correct way to trace and inspect structures?

Can I use traces for profiling?

Is there a way to perform an user defined action at function entry/exit and to exclude some functions from being traced?

Requirement is actually python 2.7, not as stated

Fix the wiki or fix ccwrap.py

How to enable func enter/leave printing?

The README file says "to produce verbose output showing function entry/leave, use the '-f' parameter".
But what filter should be passed to -f in this case? Or did you mean to write "-d" instead of "-f" because if I pass "-d" to trace_dumper I do get func enter/leave reported.

Building demo fails with undefined symbol

Output: error: unable to load plugin '/home/christer/Source/traces/trace_instrum
entor/trace_instrumentor.so': '/home/christer/Source/traces/trace_instrumentor/t
race_instrumentor.so: undefined symbol: _ZTIN5clang11ASTConsumerE'