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// Copyright 2015 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef BASE_TRACE_EVENT_COMMON_TRACE_EVENT_COMMON_H_
#define BASE_TRACE_EVENT_COMMON_TRACE_EVENT_COMMON_H_
// See third_party/perfetto/include/perfetto/tracing/track_event.h for
// documentation of Trace Event Macros.
////////////////////////////////////////////////////////////////////////////////
// Perfetto trace macros
#include "base/threading/platform_thread.h"
#include "base/time/time.h"
#include "build/build_config.h"
// Enable legacy trace event macros (e.g., TRACE_EVENT{0,1,2}).
#define PERFETTO_ENABLE_LEGACY_TRACE_EVENTS 1
// Macros for reading the current trace time (bypassing any virtual time
// overrides).
#define TRACE_TIME_TICKS_NOW() ::base::subtle::TimeTicksNowIgnoringOverride()
#define TRACE_TIME_NOW() ::base::subtle::TimeNowIgnoringOverride()
// Implementation detail: trace event macros create temporary variables
// to keep instrumentation overhead low. These macros give each temporary
// variable a unique name based on the line number to prevent name collisions.
#define INTERNAL_TRACE_EVENT_UID(name_prefix) PERFETTO_UID(name_prefix)
// Declare debug annotation converters for base time types, so they can be
// passed as trace event arguments.
// TODO(skyostil): Serialize timestamps using perfetto::TracedValue instead.
namespace perfetto {
namespace protos {
namespace pbzero {
class DebugAnnotation;
} // namespace pbzero
} // namespace protos
namespace internal {
void BASE_EXPORT
WriteDebugAnnotation(protos::pbzero::DebugAnnotation* annotation,
::base::TimeTicks);
void BASE_EXPORT
WriteDebugAnnotation(protos::pbzero::DebugAnnotation* annotation, ::base::Time);
} // namespace internal
} // namespace perfetto
// Pull in the tracing macro definitions from Perfetto.
#include "third_party/perfetto/include/perfetto/tracing/track_event.h" // IWYU pragma: export
#include "third_party/perfetto/include/perfetto/tracing/track_event_legacy.h" // IWYU pragma: export
namespace perfetto {
namespace legacy {
template <>
perfetto::ThreadTrack BASE_EXPORT
ConvertThreadId(const ::base::PlatformThreadId& thread);
#if BUILDFLAG(IS_WIN)
template <>
perfetto::ThreadTrack BASE_EXPORT ConvertThreadId(const int& thread);
#endif // BUILDFLAG(IS_WIN)
} // namespace legacy
template <>
struct BASE_EXPORT TraceTimestampTraits<::base::TimeTicks> {
static TraceTimestamp ConvertTimestampToTraceTimeNs(
const ::base::TimeTicks& ticks);
};
} // namespace perfetto
// This macro is still used in some components even when base tracing is
// disabled.
// TODO(crbug/336718643): Make sure no code affected by
// enable_base_tracing=false includes this file directly, then move the define
// to trace_event_stub.h.
#define TRACE_DISABLED_BY_DEFAULT(name) "disabled-by-default-" name
#endif // BASE_TRACE_EVENT_COMMON_TRACE_EVENT_COMMON_H_
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