Add event notification support and rdci timestamps

Also:
* print header line every 50 line on output
* print events that are being listened for with header
* cpplint clean-up

Change-Id: Ic049eb79156a9528b556e56f0fa43e1344f898cc

include/rdc_lib/impl/RdcNotificationImpl.h

@@ -0,0 +1,61 @@
+/*
+Copyright (c) 2020 - present Advanced Micro Devices, Inc. All rights reserved.
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+*/
+#ifndef INCLUDE_RDC_LIB_IMPL_RDCNOTIFICATIONIMPL_H_
+#define INCLUDE_RDC_LIB_IMPL_RDCNOTIFICATIONIMPL_H_
+
+#include <memory>
+#include <vector>
+#include <map>
+#include <mutex>
+
+#include "rdc_lib/rdc_common.h"
+#include "rdc_lib/RdcNotification.h"
+#include "rdc/rdc.h"
+
+
+namespace amd {
+namespace rdc {
+
+class RdcNotificationImpl : public RdcNotification {
+ public:
+    RdcNotificationImpl();
+    ~RdcNotificationImpl();
+
+    bool is_notification_event(rdc_field_t field) const override;
+    rdc_status_t set_listen_events(
+                              const std::vector<RdcFieldKey> fk_arr) override;
+    // Blocking
+    rdc_status_t listen(rdc_evnt_notification_t *events,
+                          uint32_t *num_events, uint32_t timeout_ms) override;
+    rdc_status_t stop_listening(uint32_t gpu_id) override;
+
+ private:
+    std::map<uint32_t, uint64_t> gpu_evnt_notif_masks_;
+    std::mutex notif_mutex_;
+};
+
+
+}  // namespace rdc
+}  // namespace amd
+
+#endif  // INCLUDE_RDC_LIB_IMPL_RDCNOTIFICATIONIMPL_H_
+