vlib: add virtual time support

Type: feature

Change-Id: Iabd76558e9c72ed8286cfeeb1fbaa4fde4832a90
Signed-off-by: Benoît Ganne <bganne@cisco.com>

src/vlib/time.h

@@ -0,0 +1,26 @@
+/*
+ * SPDX-License-Identifier: Apache-2.0
+ * Copyright(c) 2021 Cisco Systems, Inc.
+ */
+
+#ifndef included_vlib_time_h
+#define included_vlib_time_h
+
+#include <vlib/vlib.h>
+#include <vppinfra/tw_timer_1t_3w_1024sl_ov.h>
+
+static inline f64
+vlib_time_get_next_timer (vlib_main_t *vm)
+{
+  vlib_node_main_t *nm = &vm->node_main;
+  TWT (tw_timer_wheel) *wheel = nm->timing_wheel;
+  return TW (tw_timer_first_expires_in_ticks) (wheel) * wheel->timer_interval;
+}
+
+static inline void
+vlib_time_adjust (vlib_main_t *vm, f64 offset)
+{
+  vm->time_offset += offset;
+}
+
+#endif /* included_vlib_time_h */