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diff --git a/src/sys-stats.h b/src/sys-stats.h
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+/*
+ * Copyright (c) 2018 Samsung Electronics Co., Ltd.
+ *
+ * Licensed under the Flora License, Version 1.1 (the License);
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://floralicense.org/license/
+ *
+ * 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 _SYS_STATS_H_
+#define _SYS_STATS_H_
+
+/**
+ * @brief System's statistics snapshot
+ */
+struct sys_stats
+{
+	unsigned long long busy_ticks;
+	unsigned long long busy_ticks_delta;
+	unsigned long long total_ticks;
+	unsigned long long total_ticks_delta;
+	unsigned long long memory_used;
+	unsigned long long total_memory;
+};
+
+/**
+ * @brief Calculates average cpu usage between two stats snapshots.
+ *
+ * @param[in] stats the stats snapshots
+ * @param[out] usage the cpu usage as percent.
+ *
+ * @return: 0 on success, other value on error
+ */
+int sys_stats_get_cpu_usage_percentage(struct sys_stats *stats, float *usage);
+
+/**
+ * @brief Takes system statistics snapshot.
+ *
+ * @param[out] stats System's statistics snapshot.
+ *
+ * @return: 0 on success, other value on error
+ */
+int sys_stats_update(struct sys_stats *stats);
+
+/**
+ * @brief Calculates system memory usage.
+ *
+ * @param[out] usage the memory usage as percent.
+ *
+ * @return: 0 on success, other value on error
+ */
+int sys_stats_get_memory_usage_percentage(struct sys_stats *stats, float *usage);
+
+/**
+ * @brief Gets system load averages stats.
+ *
+ * @param[out] a1 one minute average.
+ * @param[out] a5 five minute average.
+ * @param[out] a15 fifteen minute average.
+ *
+ * @return: 0 on success, other value on error
+ */
+int sys_stats_get_load_averages(float *a1, float *a5, float *a15);
+
+#endif