DltLogstorage: Logstorage Cache

When using DltLogstorage on internal storage device, it is needed to
reduce writing to internal storage device as much as possible.

This patch introduces sync strategies to Logstorage to provide that
functionality.
The ON_MSG strategy is the default sync strategy that flushes every
written log message to the storage device (fflush).
The ON_DAEMON_EXIT strategy only flushes data to disk when the daemon
exits.

The strategy can be defined per filter in the dlt_logstorage.conf
configuration file by adding
SyncBehavior=<Strategy> to a configuration.

Signed-off-by: Christoph Lipka <clipka@jp.adit-jv.com>

1 files changed, 91 insertions, 0 deletions

diff --git a/src/offlinelogstorage/dlt_offline_logstorage_behavior.h b/src/offlinelogstorage/dlt_offline_logstorage_behavior.h
new file mode 100644
index 0000000..16394be
--- /dev/null
+++ b/src/offlinelogstorage/dlt_offline_logstorage_behavior.h
@@ -0,0 +1,91 @@
+/**
+ * @licence app begin@
+ * Copyright (C) 2015  Advanced Driver Information Technology.
+ * This code is developed by Advanced Driver Information Technology.
+ * Copyright of Advanced Driver Information Technology, Bosch and DENSO.
+ *
+ * DLT offline log storage functionality header file.
+ *
+ * \copyright
+ * This Source Code Form is subject to the terms of the
+ * Mozilla Public License, v. 2.0. If a copy of the MPL was not distributed with
+ * this file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ *
+ * \author Christoph Lipka <clipka@jp.adit-jv.com> ADIT 2015
+ *
+ * \file: dlt_offline_logstorage_behavior.h
+ * For further information see http://www.genivi.org/.
+ * @licence end@
+ */
+
+/*******************************************************************************
+**                                                                            **
+**  SRC-MODULE: dlt_offline_logstorage_behavior.h                             **
+**                                                                            **
+**  TARGET    : linux                                                         **
+**                                                                            **
+**  PROJECT   : DLT                                                           **
+**                                                                            **
+**  AUTHOR    : Christoph Lipka clipka@jp.adit-jv.com                         **
+**                                                                            **
+**  PURPOSE   :                                                               **
+**                                                                            **
+**  REMARKS   :                                                               **
+**                                                                            **
+**  PLATFORM DEPENDANT [yes/no]: yes                                          **
+**                                                                            **
+**  TO BE CHANGED BY USER [yes/no]: no                                        **
+**                                                                            **
+*******************************************************************************/
+
+/*******************************************************************************
+**                      Author Identity                                       **
+********************************************************************************
+**                                                                            **
+** Initials     Name                       Company                            **
+** --------     -------------------------  ---------------------------------- **
+**  cl          Christoph Lipka            ADIT                               **
+*******************************************************************************/
+
+
+#ifndef DLT_OFFLINELOGSTORAGE_DLT_OFFLINE_LOGSTORAGE_BEHAVIOR_H_
+#define DLT_OFFLINELOGSTORAGE_DLT_OFFLINE_LOGSTORAGE_BEHAVIOR_H_
+
+/* ON_MSG behavior */
+int dlt_logstorage_prepare_on_msg(DltLogStorageConfigData *config,
+                                  DltLogStorageUserConfig *file_config,
+                                  char *dev_path,
+                                  int log_msg_size);
+int dlt_logstorage_write_on_msg(DltLogStorageConfigData *config,
+                         unsigned char *data1,
+                         int size1,
+                         unsigned char *data2,
+                         int size2,
+                         unsigned char *data3,
+                         int size3);
+
+/* status is strategy, e.g. DLT_LOGSTORAGE_SYNC_ON_MSG is used when callback
+ * is called on message received */
+int dlt_logstorage_sync_on_msg(DltLogStorageConfigData *config, int status);
+
+/* ON_DAEMON_EXIT behavior */
+int dlt_logstorage_prepare_on_daemon_exit(DltLogStorageConfigData *config,
+                                          DltLogStorageUserConfig *file_config,
+                                          char *dev_path,
+                                          int log_msg_size);
+
+int dlt_logstorage_write_on_daemon_exit(DltLogStorageConfigData *config,
+                                        unsigned char *data1,
+                                        int size1,
+                                        unsigned char *data2,
+                                        int size2,
+                                        unsigned char *data3,
+                                        int size3);
+
+/* status is strategy, e.g. DLT_LOGSTORAGE_SYNC_ON_MSG is used when callback
+ * is called on message received */
+int dlt_logstorage_sync_on_daemon_exit(DltLogStorageConfigData *config,
+                                       int status);
+
+#endif /* DLT_OFFLINELOGSTORAGE_DLT_OFFLINE_LOGSTORAGE_BEHAVIOR_H_ */