Repo created

TMessagesProj/jni/voip/webrtc/base/time/time_fuchsia.cc

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+// Copyright 2017 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "base/time/time.h"
+
+#include <zircon/syscalls.h>
+
+#include "base/fuchsia/fuchsia_logging.h"
+#include "base/time/time_override.h"
+
+namespace base {
+
+// Time -----------------------------------------------------------------------
+
+namespace subtle {
+Time TimeNowIgnoringOverride() {
+  zx_time_t nanos_since_unix_epoch;
+  zx_status_t status = zx_clock_get(ZX_CLOCK_UTC, &nanos_since_unix_epoch);
+  ZX_CHECK(status == ZX_OK, status);
+  // The following expression will overflow in the year 289938 A.D.:
+  return Time::FromZxTime(nanos_since_unix_epoch);
+}
+
+Time TimeNowFromSystemTimeIgnoringOverride() {
+  // Just use TimeNowIgnoringOverride() because it returns the system time.
+  return TimeNowIgnoringOverride();
+}
+}  // namespace subtle
+
+// TimeTicks ------------------------------------------------------------------
+
+namespace subtle {
+TimeTicks TimeTicksNowIgnoringOverride() {
+  const zx_time_t nanos_since_boot = zx_clock_get_monotonic();
+  CHECK(nanos_since_boot != 0);
+  return TimeTicks::FromZxTime(nanos_since_boot);
+}
+}  // namespace subtle
+
+// static
+TimeDelta TimeDelta::FromZxDuration(zx_duration_t nanos) {
+  return TimeDelta::FromNanoseconds(nanos);
+}
+
+zx_duration_t TimeDelta::ToZxDuration() const {
+  return InNanoseconds();
+}
+
+// static
+Time Time::FromZxTime(zx_time_t nanos_since_unix_epoch) {
+  return Time::UnixEpoch() + TimeDelta::FromNanoseconds(nanos_since_unix_epoch);
+}
+
+zx_time_t Time::ToZxTime() const {
+  return (*this - Time::UnixEpoch()).InNanoseconds();
+}
+
+// static
+TimeTicks::Clock TimeTicks::GetClock() {
+  return Clock::FUCHSIA_ZX_CLOCK_MONOTONIC;
+}
+
+// static
+bool TimeTicks::IsHighResolution() {
+  return true;
+}
+
+// static
+bool TimeTicks::IsConsistentAcrossProcesses() {
+  return true;
+}
+
+// static
+TimeTicks TimeTicks::FromZxTime(zx_time_t nanos_since_boot) {
+  return TimeTicks() + TimeDelta::FromNanoseconds(nanos_since_boot);
+}
+
+zx_time_t TimeTicks::ToZxTime() const {
+  return (*this - TimeTicks()).InNanoseconds();
+}
+
+// ThreadTicks ----------------------------------------------------------------
+
+namespace subtle {
+ThreadTicks ThreadTicksNowIgnoringOverride() {
+  zx_time_t nanos_since_thread_started;
+  zx_status_t status =
+      zx_clock_get(ZX_CLOCK_THREAD, &nanos_since_thread_started);
+  ZX_CHECK(status == ZX_OK, status);
+  DCHECK(nanos_since_thread_started != 0);
+  return ThreadTicks() + TimeDelta::FromNanoseconds(nanos_since_thread_started);
+}
+}  // namespace subtle
+
+}  // namespace base