1 files changed, 89 insertions, 0 deletions
diff --git a/src/srvpp/src/srvpp_logger.h b/src/srvpp/src/srvpp_logger.h
new file mode 100644
index 0000000..3a1c947
--- /dev/null
+++ b/src/srvpp/src/srvpp_logger.h
@@ -0,0 +1,89 @@
+/*
+ * Copyright (c) 2016 Cisco and/or its affiliates.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef SRC_SRVPP_LOGGER_H_
+#define SRC_SRVPP_LOGGER_H_
+
+#include "srvpp.h"
+
+/**
+ * @brief Pointer to logging callback, if set.
+ */
+extern volatile srvpp_log_cb srvpp_log_callback;
+
+/**
+ * @brief Returns the string representing the specified log level.
+ */
+#define _SRVPP_LL_STR(LL) \
+    ((SRVPP_ERR == LL) ? "ERR" : \
+     (SRVPP_WRN == LL) ? "WRN" : \
+     (SRVPP_INF == LL) ? "INF" : \
+     (SRVPP_DBG == LL) ? "DBG" : \
+      "")
+
+/**
+ * @brief Internal logging macro for formatted messages.
+ */
+#ifdef NDEBUG
+#define _SRVPP_LOG_FMT(LL, MSG, ...) \
+    do { \
+        if (NULL != srvpp_log_callback) { \
+            srvpp_log_to_cb(LL, MSG, __VA_ARGS__); \
+        } else { \
+            fprintf(stderr, "[%s] " MSG "\n", _SRVPP_LL_STR(LL), __VA_ARGS__); \
+        } \
+} while(0)
+#else
+#define _SRVPP_LOG_FMT(LL, MSG, ...) \
+    do { \
+        if (NULL != srvpp_log_callback) { \
+            srvpp_log_to_cb(LL, "(%s:%d) " MSG, __func__, __LINE__, __VA_ARGS__); \
+        } else { \
+            fprintf(stderr, "[%s] (%s:%d) " MSG "\n", _SRVPP_LL_STR(LL), __func__, __LINE__, __VA_ARGS__); \
+        } \
+} while(0)
+#endif
+
+/* Logging macros for formatted messages. */
+#define SRVPP_LOG_ERR(MSG, ...) _SRVPP_LOG_FMT(SRVPP_ERR, MSG, __VA_ARGS__);
+#define SRVPP_LOG_WRN(MSG, ...) _SRVPP_LOG_FMT(SRVPP_WRN, MSG, __VA_ARGS__);
+#define SRVPP_LOG_INF(MSG, ...) _SRVPP_LOG_FMT(SRVPP_INF, MSG, __VA_ARGS__);
+#define SRVPP_LOG_DBG(MSG, ...) _SRVPP_LOG_FMT(SRVPP_DBG, MSG, __VA_ARGS__);
+
+/* Logging macros for unformatted messages. */
+#define SRVPP_LOG_ERR_MSG(MSG) _SRVPP_LOG_FMT(SRVPP_ERR, MSG "%s", "");
+#define SRVPP_LOG_WRN_MSG(MSG) _SRVPP_LOG_FMT(SRVPP_WRN, MSG "%s", "");
+#define SRVPP_LOG_INF_MSG(MSG) _SRVPP_LOG_FMT(SRVPP_INF, MSG "%s", "");
+#define SRVPP_LOG_DBG_MSG(MSG) _SRVPP_LOG_FMT(SRVPP_DBG, MSG "%s", "");
+
+/**
+ * @brief Initializes logger.
+ */
+void srvpp_logger_init();
+
+/**
+ * @brief Cleans up resources used by he logger.
+ */
+void srvpp_logger_cleanup();
+
+/**
+ * @brief Logs into the callback pre-specified by ::srvpp_set_log_cb.
+ *
+ * @param[in] level Log level.
+ * @param[in] format Format message.
+ */
+void srvpp_log_to_cb(srvpp_log_level_t level, const char *format, ...);
+
+#endif /* SRC_SRVPP_LOGGER_H_ */