naiveproxy/src/net/base/trace_event_stub.h
2024-10-07 17:43:47 +08:00

45 lines
1.3 KiB
C++

// Copyright 2023 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// This file defines stubs for tracing-related classes which are used by net
// but are not available in Cronet builds (where tracing is disabled to reduce
// binary size).
// Even though these stubs are part of the base::trace_event namespace, they're
// technically not required by base. So, implement them here to make that
// explicit.
#ifndef NET_BASE_TRACE_EVENT_STUB_H_
#define NET_BASE_TRACE_EVENT_STUB_H_
#include "base/base_export.h"
#include "base/memory/weak_ptr.h"
#include "base/trace_event/trace_event_stub.h"
namespace base::trace_event {
class BASE_EXPORT TraceLog {
public:
class BASE_EXPORT AsyncEnabledStateObserver {
public:
virtual ~AsyncEnabledStateObserver() = default;
virtual void OnTraceLogEnabled() = 0;
virtual void OnTraceLogDisabled() = 0;
};
static TraceLog* GetInstance() {
static TraceLog obj;
return &obj;
}
bool IsEnabled() { return false; }
void AddAsyncEnabledStateObserver(WeakPtr<AsyncEnabledStateObserver>) {}
void RemoveAsyncEnabledStateObserver(AsyncEnabledStateObserver*) {}
};
} // namespace base::trace_event
#endif // NET_BASE_TRACE_EVENT_STUB_H_