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Allowed to use SIGPROF to print stack traces for debugging purposes

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This commit is contained in:
Alexey Milovidov 2019-08-18 00:13:38 +03:00
parent 2cd669fa1d
commit 081f1bedc2
2 changed files with 15 additions and 5 deletions
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6
dbms/src/Common/StackTrace.cpp
View File

@ -151,6 +151,12 @@ std::string signalToErrorMessage(int sig, const siginfo_t & info, const ucontext
}
break;
}
case SIGPROF:
{
error << "This is a signal used for debugging purposes by the user.";
break;
}
}
return error.str();

14
libs/libdaemon/src/BaseDaemon.cpp
View File

@ -110,10 +110,12 @@ static void faultSignalHandler(int sig, siginfo_t * info, void * context)
out.next();
/// The time that is usually enough for separate thread to print info into log.
::sleep(10);
call_default_signal_handler(sig);
if (sig != SIGPROF) /// This signal is used for debugging.
{
/// The time that is usually enough for separate thread to print info into log.
::sleep(10);
call_default_signal_handler(sig);
}
}
@ -697,7 +699,9 @@ void BaseDaemon::initializeTerminationAndSignalProcessing()
}
};
add_signal_handler({SIGABRT, SIGSEGV, SIGILL, SIGBUS, SIGSYS, SIGFPE, SIGPIPE}, faultSignalHandler);
/// SIGPROF is added for debugging purposes. To output a stack trace of any running thread at anytime.
add_signal_handler({SIGABRT, SIGSEGV, SIGILL, SIGBUS, SIGSYS, SIGFPE, SIGPIPE, SIGPROF}, faultSignalHandler);
add_signal_handler({SIGHUP, SIGUSR1}, closeLogsSignalHandler);
add_signal_handler({SIGINT, SIGQUIT, SIGTERM}, terminateRequestedSignalHandler);