1 files changed, 76 insertions, 0 deletions
diff --git a/VNFs/DPPD-PROX/clock.h b/VNFs/DPPD-PROX/clock.h
new file mode 100644
index 00000000..719968ab
--- /dev/null
+++ b/VNFs/DPPD-PROX/clock.h
@@ -0,0 +1,76 @@
+/*
+// Copyright (c) 2010-2017 Intel Corporation
+//
+// 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 _CLOCK_H_
+#define _CLOCK_H_
+
+#include <inttypes.h>
+
+extern uint32_t rdtsc_overhead;
+extern uint32_t rdtsc_overhead_stats;
+
+void clock_init(void);
+
+struct time_unit {
+	uint64_t sec;
+	uint64_t nsec;
+};
+
+struct time_unit_err {
+	struct time_unit time;
+	struct time_unit error;
+};
+
+extern uint64_t thresh;
+extern uint64_t tsc_hz;
+
+static uint64_t val_to_rate(uint64_t val, uint64_t delta_t)
+{
+	if (val < thresh) {
+		return val * tsc_hz / delta_t;
+	} else if (val >> 2 < thresh) {
+		/* bytes per sec malls into this category ... */
+		return ((val >> 2) * tsc_hz) / (delta_t >> 2);
+	} else {
+		if (delta_t < tsc_hz)
+			return UINT64_MAX;
+		else
+			return val / (delta_t/tsc_hz);
+	}
+}
+
+/* The precision of the conversion is nano-second. */
+uint64_t str_to_tsc(const char *from);
+uint64_t sec_to_tsc(uint64_t sec);
+uint64_t msec_to_tsc(uint64_t msec);
+uint64_t usec_to_tsc(uint64_t usec);
+uint64_t nsec_to_tsc(uint64_t nsec);
+uint64_t freq_to_tsc(uint64_t times_per_sec);
+uint64_t tsc_to_msec(uint64_t tsc);
+uint64_t tsc_to_usec(uint64_t tsc);
+uint64_t tsc_to_nsec(uint64_t tsc);
+uint64_t tsc_to_sec(uint64_t tsc);
+struct time_unit tsc_to_time_unit(uint64_t tsc);
+uint64_t time_unit_to_usec(struct time_unit *time_unit);
+uint64_t time_unit_to_nsec(struct time_unit *time_unit);
+int time_unit_cmp(struct time_unit *left, struct time_unit *right);
+
+struct timeval;
+void tsc_to_tv(struct timeval *tv, const uint64_t tsc);
+void tv_to_tsc(const struct timeval *tv, uint64_t *tsc);
+struct timeval tv_diff(const struct timeval *tv1, const struct timeval * tv2);
+
+#endif /* _CLOCK_H_ */