1 // Copyright 2020 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4 
5 #include "services/tracing/public/cpp/perfetto/trace_time.h"
6 
7 #include "base/logging.h"
8 #include "base/trace_event/trace_event.h"
9 #include "build/build_config.h"
10 #include "third_party/perfetto/include/perfetto/base/time.h"
11 
12 namespace tracing {
13 
TraceBootTicksNow()14 int64_t TraceBootTicksNow() {
15   // On Windows and Mac, TRACE_TIME_TICKS_NOW() behaves like boottime already.
16 #if defined(OS_LINUX) || defined(OS_ANDROID) || defined(OS_FUCHSIA)
17   struct timespec ts;
18   int res = clock_gettime(CLOCK_BOOTTIME, &ts);
19   if (res != -1)
20     return static_cast<int64_t>(perfetto::base::FromPosixTimespec(ts).count());
21 #endif
22   return TRACE_TIME_TICKS_NOW().since_origin().InNanoseconds();
23 }
24 
25 }  // namespace tracing