system: use signalfd for dlt-system

1: Move the call of pthread_sigmask in dlt-qnx-systems main before DLT_REGISTER_APP, because this already spawns a thread, what was done without applying pthread_sigmask before.
2: Replaced all threads in dlt-system, that are spawned for each feature, through one poll. This poll waits for a file descriptor event, that triggers the feature routine, that was executed before in the thread. Done this for following processes:

* reading syslog and journal
* frequently reading logfile and logprocess
* triggering filetransfer, if a file was added/changed in watched directory
* checking watchdog timer of systemd service file with defined intervall

Signed-off-by: dbiastoch <dbiastoch@de.adit-jv.com>

1 files changed, 2 insertions, 3 deletions

diff --git a/src/system/dlt-system.c b/src/system/dlt-system.c
index 0b3cd0d..92ea466 100644
--- a/src/system/dlt-system.c
+++ b/src/system/dlt-system.c
@@ -112,11 +112,10 @@ int main(int argc, char *argv[])
     signal(SIGQUIT, dlt_system_signal_handler);
     signal(SIGINT, dlt_system_signal_handler);
 
-    DLT_LOG(dltsystem, DLT_LOG_DEBUG, DLT_STRING("Launching threads."));
+    DLT_LOG(dltsystem, DLT_LOG_DEBUG, DLT_STRING("Initializing all processes and starting poll for events."));
 
 
-    start_threads(&config);
-    join_threads();
+    start_dlt_system_processes(&config);
     return 0;
 }