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1 | /* | |
2 | * Copyright (C) 1996-2021 The Squid Software Foundation and contributors | |
3 | * | |
4 | * Squid software is distributed under GPLv2+ license and includes | |
5 | * contributions from numerous individuals and organizations. | |
6 | * Please see the COPYING and CONTRIBUTORS files for details. | |
7 | */ | |
8 | ||
9 | #ifndef SQUID_REMOVALPOLICY_H | |
10 | #define SQUID_REMOVALPOLICY_H | |
11 | ||
12 | #include "cbdata.h" | |
13 | ||
14 | class RemovalPolicyWalker; | |
15 | class RemovalPurgeWalker; | |
16 | class wordlist; | |
17 | class StoreEntry; | |
18 | ||
19 | class RemovalPolicySettings | |
20 | { | |
21 | ||
22 | public: | |
23 | RemovalPolicySettings() : type(NULL), args(NULL) {}; | |
24 | ||
25 | char *type; | |
26 | wordlist *args; | |
27 | }; | |
28 | ||
29 | class RemovalPolicyNode | |
30 | { | |
31 | ||
32 | public: | |
33 | RemovalPolicyNode() : data(NULL) {} | |
34 | ||
35 | void *data; | |
36 | }; | |
37 | ||
38 | class RemovalPolicy | |
39 | { | |
40 | CBDATA_CLASS(RemovalPolicy); | |
41 | ||
42 | public: | |
43 | const char *_type; | |
44 | void *_data; | |
45 | void (*Free) (RemovalPolicy * policy); | |
46 | void (*Add) (RemovalPolicy * policy, StoreEntry * entry, RemovalPolicyNode * node); | |
47 | void (*Remove) (RemovalPolicy * policy, StoreEntry * entry, RemovalPolicyNode * node); | |
48 | void (*Referenced) (RemovalPolicy * policy, const StoreEntry * entry, RemovalPolicyNode * node); | |
49 | void (*Dereferenced) (RemovalPolicy * policy, const StoreEntry * entry, RemovalPolicyNode * node); | |
50 | RemovalPolicyWalker *(*WalkInit) (RemovalPolicy * policy); | |
51 | RemovalPurgeWalker *(*PurgeInit) (RemovalPolicy * policy, int max_scan); | |
52 | void (*Stats) (RemovalPolicy * policy, StoreEntry * entry); | |
53 | }; | |
54 | ||
55 | class RemovalPolicyWalker | |
56 | { | |
57 | CBDATA_CLASS(RemovalPolicyWalker); | |
58 | ||
59 | public: | |
60 | RemovalPolicy *_policy; | |
61 | void *_data; | |
62 | const StoreEntry *(*Next) (RemovalPolicyWalker * walker); | |
63 | void (*Done) (RemovalPolicyWalker * walker); | |
64 | }; | |
65 | ||
66 | class RemovalPurgeWalker | |
67 | { | |
68 | CBDATA_CLASS(RemovalPurgeWalker); | |
69 | ||
70 | public: | |
71 | RemovalPolicy *_policy; | |
72 | void *_data; | |
73 | int scanned, max_scan, locked; | |
74 | StoreEntry *(*Next) (RemovalPurgeWalker * walker); | |
75 | void (*Done) (RemovalPurgeWalker * walker); | |
76 | }; | |
77 | ||
78 | RemovalPolicy *createRemovalPolicy(RemovalPolicySettings * settings); | |
79 | ||
80 | typedef RemovalPolicy *REMOVALPOLICYCREATE(wordlist * args); | |
81 | ||
82 | #endif /* SQUID_REMOVALPOLICY_H */ | |
83 |