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93 lines
3.0 KiB
C++
93 lines
3.0 KiB
C++
// Copyright 2014 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef BASE_TRACE_EVENT_TRACE_EVENT_ARGUMENT_H_
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#define BASE_TRACE_EVENT_TRACE_EVENT_ARGUMENT_H_
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#include <stddef.h>
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#include <memory>
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#include <string>
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#include <vector>
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#include "base/macros.h"
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#include "base/pickle.h"
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#include "base/strings/string_piece.h"
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#include "base/trace_event/trace_event_impl.h"
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namespace base {
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class Value;
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namespace trace_event {
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class BASE_EXPORT TracedValue : public ConvertableToTraceFormat {
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public:
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TracedValue();
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explicit TracedValue(size_t capacity);
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~TracedValue() override;
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void EndDictionary();
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void EndArray();
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// These methods assume that |name| is a long lived "quoted" string.
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void SetInteger(const char* name, int value);
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void SetDouble(const char* name, double value);
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void SetBoolean(const char* name, bool value);
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void SetString(const char* name, base::StringPiece value);
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void SetValue(const char* name, const TracedValue& value);
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void BeginDictionary(const char* name);
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void BeginArray(const char* name);
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// These, instead, can be safely passed a temporary string.
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void SetIntegerWithCopiedName(base::StringPiece name, int value);
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void SetDoubleWithCopiedName(base::StringPiece name, double value);
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void SetBooleanWithCopiedName(base::StringPiece name, bool value);
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void SetStringWithCopiedName(base::StringPiece name,
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base::StringPiece value);
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void SetValueWithCopiedName(base::StringPiece name,
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const TracedValue& value);
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void BeginDictionaryWithCopiedName(base::StringPiece name);
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void BeginArrayWithCopiedName(base::StringPiece name);
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void AppendInteger(int);
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void AppendDouble(double);
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void AppendBoolean(bool);
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void AppendString(base::StringPiece);
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void BeginArray();
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void BeginDictionary();
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// ConvertableToTraceFormat implementation.
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void AppendAsTraceFormat(std::string* out) const override;
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void EstimateTraceMemoryOverhead(TraceEventMemoryOverhead* overhead) override;
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// DEPRECATED: do not use, here only for legacy reasons. These methods causes
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// a copy-and-translation of the base::Value into the equivalent TracedValue.
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// TODO(primiano): migrate the (three) existing clients to the cheaper
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// SetValue(TracedValue) API. crbug.com/495628.
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void SetValue(const char* name, std::unique_ptr<base::Value> value);
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void SetBaseValueWithCopiedName(base::StringPiece name,
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const base::Value& value);
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void AppendBaseValue(const base::Value& value);
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// Public for tests only.
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std::unique_ptr<base::Value> ToBaseValue() const;
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private:
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Pickle pickle_;
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#ifndef NDEBUG
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// In debug builds checks the pairings of {Start,End}{Dictionary,Array}
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std::vector<bool> nesting_stack_;
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#endif
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DISALLOW_COPY_AND_ASSIGN(TracedValue);
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};
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} // namespace trace_event
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} // namespace base
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#endif // BASE_TRACE_EVENT_TRACE_EVENT_ARGUMENT_H_
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