Hi Ramesh,
reading the trace files with tid instead of pid will make it much easier
to follow each threads flow of control.
Tools such as trace2dot should also benefit.
Example:
:
Mar 15 10:57:54.837368 osafamfd [475:src/imm/agent/imma_oi_api.cc:2960]
TR attr:safCSIComp
Mar 15 10:57:54.837459 osafamfd [475:src/imm/agent/imma_oi_api.cc:2960]
TR attr:saAmfCSICompHAState
Mar 15 10:57:54.837510 osafamfd [475:src/imm/agent/imma_oi_api.cc:2960]
TR attr:saAmfCSICompHAReadinessState
Mar 15 10:57:54.839783 osafamfd [477:src/amf/amfd/timer.cc:0154] >>
avd_tmr_exp
Mar 15 10:57:54.839909 osafamfd [477:src/amf/amfd/timer.cc:0175] <<
avd_tmr_exp
Mar 15 10:57:54.840535 osafamfd [478:src/mds/mds_dt_trans.c:0608] >>
mdtm_process_poll_recv_data_tcp
and e.g.:
grep 'osafamfd \[475' osafamfd > amfd_475_trace
grep 'osafamfd \[477' osafamfd > amfd_477_trace
etc. we can have one trace file per thread.
/Regards Hans
On 03/15/2017 10:49 AM, ramesh betham wrote:
> Is there any requirement/necessity came across to know the "tid' in
> log info?.
>
> In general 'pid' is something commonly referred specific to process.
> Referring tid in some logs and pid in some other logs may lead to
> confusion while debugging.
>
> How about having both pid:tid values?
>
> Thanks,
> Ramesh.
>
> On 3/14/2017 8:59 PM, Anders Widell wrote:
>> Ack.
>>
>> regards,
>>
>> Anders Widell
>>
>>
>> On 03/13/2017 01:16 PM, Hans Nordeback wrote:
>>> src/base/logtrace.c | 7 ++++++-
>>> 1 files changed, 6 insertions(+), 1 deletions(-)
>>>
>>>
>>> Even though not being LSB it would be good to use thread id instead
>>> of process id in trace.
>>>
>>> diff --git a/src/base/logtrace.c b/src/base/logtrace.c
>>> --- a/src/base/logtrace.c
>>> +++ b/src/base/logtrace.c
>>> @@ -48,6 +48,11 @@ static const char *ident;
>>> static const char *pathname;
>>> static int logmask;
>>> +static pid_t gettid(void)
>>> +{
>>> + return syscall(SYS_gettid);
>>> +}
>>> +
>>> /**
>>> * USR2 signal handler to enable/disable trace (toggle)
>>> * @param sig
>>> @@ -100,7 +105,7 @@ void output_(const char *file, unsigned
>>> i = snprintf(preamble, sizeof(preamble), "%s.%06ld %s ",
>>> log_string, tv.tv_usec, ident);
>>> snprintf(&preamble[i], sizeof(preamble) - i, "[%d:%s:%04u]
>>> %s %s",
>>> - getpid(), file, line, prefix_name[priority + category],
>>> format);
>>> + gettid(), file, line, prefix_name[priority + category],
>>> format);
>>> i = vsnprintf(log_string, sizeof(log_string), preamble, ap);
>>> /* Check if the logtrace user had passed message length >=
>>> logtrace array limit of 1023.
>>
>
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