enhance: when setting the log output file, stellar still outputs necessary log information to stderr

src/log/log.cpp

@@ -321,5 +321,11 @@ void log_print(enum log_level level, const char *module, const char *fmt, ...)
         {
             nwrite = write(g_log_ctx->log_fd, buf, p - buf);
         } while (nwrite == -1 && errno == EINTR);
+
+        // log level is LOG_STATE, also print to stderr
+        if (level == LOG_STATE)
+        {
+            fprintf(stderr, "%s", buf);
+        }
     }
 }

src/packet_io/dumpfile_io.cpp

@@ -205,7 +205,7 @@ static void *dumpfile_thread(void *arg)
             ATOMIC_SET(&handle->io_thread_wait_exit, 1);
         }
 
-        PACKET_IO_LOG_STATE("dumpfile io thread waiting exit");
+        PACKET_IO_LOG_STATE("dumpfile io thread has processed all pcap files, wait for exit");
         sleep(1);
     }
 

src/stellar/stellar_core.cpp

@@ -403,7 +403,7 @@ static void stellar_thread_clean(struct stellar_runtime *runtime, struct stellar
         struct stellar_thread *thread = &runtime->threads[i];
         if (ATOMIC_READ(&thread->is_runing) == 0)
         {
-            STELLAR_LOG_STATE("wait worker thread %d free context", i);
+            STELLAR_LOG_STATE("clean worker thread %d context", i);
             session_manager_free(thread->sess_mgr);
             ip_reassembly_free(thread->ip_mgr);
         }