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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_MEMORY_ALLOCATOR_DUMP_GUID_H_
#define BASE_TRACE_EVENT_MEMORY_ALLOCATOR_DUMP_GUID_H_
#include <stdint.h>
#include <string>
#include "base/base_export.h"
namespace base::trace_event {
class BASE_EXPORT MemoryAllocatorDumpGuid {
public:
MemoryAllocatorDumpGuid();
explicit MemoryAllocatorDumpGuid(uint64_t guid);
// Utility ctor to hash a GUID if the caller prefers a string. The caller
// still has to ensure that |guid_str| is unique, per snapshot, within the
// global scope of all the traced processes.
explicit MemoryAllocatorDumpGuid(const std::string& guid_str);
uint64_t ToUint64() const { return guid_; }
// Returns a (hex-encoded) string representation of the guid.
std::string ToString() const;
bool empty() const { return guid_ == 0u; }
friend bool operator==(const MemoryAllocatorDumpGuid&,
const MemoryAllocatorDumpGuid&) = default;
friend auto operator<=>(const MemoryAllocatorDumpGuid&,
const MemoryAllocatorDumpGuid&) = default;
private:
uint64_t guid_;
// Deliberately copy-able.
};
} // namespace base::trace_event
#endif // BASE_TRACE_EVENT_MEMORY_ALLOCATOR_DUMP_GUID_H_
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