File: entry_metadata.h

package info (click to toggle)
chromium 138.0.7204.183-1~deb12u1
  • links: PTS, VCS
  • area: main
  • in suites: bookworm-proposed-updates
  • size: 6,080,960 kB
  • sloc: cpp: 34,937,079; ansic: 7,176,967; javascript: 4,110,704; python: 1,419,954; asm: 946,768; xml: 739,971; pascal: 187,324; sh: 89,623; perl: 88,663; objc: 79,944; sql: 50,304; cs: 41,786; fortran: 24,137; makefile: 21,811; php: 13,980; tcl: 13,166; yacc: 8,925; ruby: 7,485; awk: 3,720; lisp: 3,096; lex: 1,327; ada: 727; jsp: 228; sed: 36
file content (31 lines) | stat: -rw-r--r-- 1,272 bytes parent folder | download | duplicates (4) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
 
// Copyright 2025 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef COMPONENTS_PERSISTENT_CACHE_ENTRY_METADATA_H_
#define COMPONENTS_PERSISTENT_CACHE_ENTRY_METADATA_H_

#include "base/component_export.h"
#include "base/time/time.h"

namespace persistent_cache {

// Metadata that can be optionally attached to an `Entry`. Leaving
// some or all members to their default value is always valid. EntryMetadata is
// not a replacement or an enhancement to either keys or values. It represents
// information that aids the internal operations of the cache such as
// eviction. In some cases the data might be of some use to code outside of
// persistent_cache. As such it is externally accessible through `Entry`.
// Attempts to use metadata as additional storage for arbitrary values may
// result in performance degradation or unexpected behavior.
struct COMPONENT_EXPORT(PERSISTENT_CACHE) EntryMetadata {
  // Opaque token indicating whether the cached entry is still valid
  int64_t input_signature = 0;

  // Time at which the entry was inserted into the cache.
  int64_t write_timestamp = 0;
};

}  // namespace persistent_cache

#endif  // COMPONENTS_PERSISTENT_CACHE_ENTRY_METADATA_H_