Lock Assertion in Capture Engine

[Joel Sherrill]

Hi

I thought it would be quicker to simply ask and get insight than bang
heads on a Friday. Building RTEMS with debug enabled, running the
sample/capture, you get an assertion on a lock inconsistency.

Since Sebastian did the lock checking and Chris wrote this code, I was
hoping one of you would have a quick answer.

(gdb) r
Starting program:
/home/joel/rtems-4.11-work/b-sis/./sparc-rtems4.11/c/sis/testsuites/samples/capture/capture.exe



*** BEGIN OF TEST CAPTURE ENGINE ***
Press any key to start capture engine (20s remaining)
Press any key to start capture engine (19s remaining)
Press any key to start capture engine (18s remaining)
Press any key to start capture engine (17s remaining)
Press any key to start capture engine (16s remaining)
Press any key to start capture engine (15s remaining)

Monitor ready, press enter to login.

1-rtems $ cwceil 100
watch ceiling is 100.
1-rtems $ cwfloor 102
watch floor is 102.
1-rtems $ cwglob on
assertion "_Debug_Is_owner_of_giant()" failed: file
"../../../../../../rtems/c/src/../../cpukit/libmisc/capture/capture.c",
line 1372, function: rtems_capture_watch_global

Breakpoint 1, _Terminate
(the_source=the_source at entry=RTEMS_FATAL_SOURCE_ASSERT,
    is_internal=is_internal at entry=false, the_error=the_error at entry=33825456)
    at ../../../../../../rtems/c/src/../../cpukit/score/src/interr.c:36
36    {
(gdb) bt
#0  _Terminate (the_source=the_source at entry=RTEMS_FATAL_SOURCE_ASSERT,
    is_internal=is_internal at entry=false, the_error=the_error at entry=33825456)
    at ../../../../../../rtems/c/src/../../cpukit/score/src/interr.c:36
#1  0x02010aa0 in rtems_fatal
(source=source at entry=RTEMS_FATAL_SOURCE_ASSERT,
    error=error at entry=33825456) at
../../../../../../rtems/c/src/../../cpukit/sapi/src/fatal2.c:34
#2  0x0200a66c in __assert_func (
    file=0x20331e0
"../../../../../../rtems/c/src/../../cpukit/libmisc/capture/capture.c",
line=1372,
    func=func at entry=0x2033330 <__FUNCTION__.6346>
"rtems_capture_watch_global",
    failedexpr=failedexpr at entry=0x2032188 "_Debug_Is_owner_of_giant()")
    at
../../../../../../rtems/c/src/../../cpukit/libcsupport/src/__assert.c:52
#3  0x02007e28 in rtems_capture_watch_global (enable=enable at entry=true)
    at
../../../../../../rtems/c/src/../../cpukit/libmisc/capture/capture.c:1383
#4  0x02003d70 in rtems_capture_cli_watch_global (argc=2,
argv=<optimized out>,
    command_arg=<optimized out>, verbose=<optimized out>)
    at
../../../../../../rtems/c/src/../../cpukit/libmisc/capture/capture-cli.c:939
#5  0x02018574 in rtems_monitor_task (monitor_flags=0)
    at
../../../../../../rtems/c/src/../../cpukit/libmisc/monitor/mon-editor.c:590
#6  0x02020d48 in _Thread_Handler ()
    at
../../../../../../rtems/c/src/../../cpukit/score/src/threadhandler.c:192
#7  0x02020bdc in _Thread_Handler ()
    at
../../../../../../rtems/c/src/../../cpukit/score/src/threadhandler.c:96
(gdb) q
A debugging session is active.

    Inferior 1 [process 42000] will be killed.

Quit anyway? (y or n) y

-- 
Joel Sherrill, Ph.D.             Director of Research & Development
joel.sherrill at OARcorp.com        On-Line Applications Research
Ask me about RTEMS: a free RTOS  Huntsville AL 35805
Support Available                (256) 722-9985