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5d620373 | 1 | /* |
262a0e14 | 2 | * $Id$ |
5d620373 | 3 | * |
4 | * DEBUG: section 45 Callback Data Registry | |
5 | * AUTHOR: Duane Wessels | |
6 | * | |
2b6662ba | 7 | * SQUID Web Proxy Cache http://www.squid-cache.org/ |
5d620373 | 8 | * ---------------------------------------------------------- |
9 | * | |
2b6662ba | 10 | * Squid is the result of efforts by numerous individuals from |
11 | * the Internet community; see the CONTRIBUTORS file for full | |
12 | * details. Many organizations have provided support for Squid's | |
13 | * development; see the SPONSORS file for full details. Squid is | |
14 | * Copyrighted (C) 2001 by the Regents of the University of | |
15 | * California; see the COPYRIGHT file for full details. Squid | |
16 | * incorporates software developed and/or copyrighted by other | |
17 | * sources; see the CREDITS file for full details. | |
5d620373 | 18 | * |
19 | * This program is free software; you can redistribute it and/or modify | |
20 | * it under the terms of the GNU General Public License as published by | |
21 | * the Free Software Foundation; either version 2 of the License, or | |
22 | * (at your option) any later version. | |
26ac0430 | 23 | * |
5d620373 | 24 | * This program is distributed in the hope that it will be useful, |
25 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
26 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
27 | * GNU General Public License for more details. | |
26ac0430 | 28 | * |
5d620373 | 29 | * You should have received a copy of the GNU General Public License |
30 | * along with this program; if not, write to the Free Software | |
31 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA. | |
32 | * | |
33 | */ | |
34 | ||
35 | /* | |
36 | * Use these to find memory leaks | |
37 | */ | |
38 | ||
582c2af2 | 39 | #include "squid.h" |
3d41e53a FC |
40 | |
41 | #if USE_LEAKFINDER | |
42 | ||
ba126bee | 43 | #include "LeakFinder.h" |
e6ccf245 | 44 | #include "Store.h" |
a4452e04 | 45 | #include "SquidTime.h" |
5d620373 | 46 | |
ba126bee | 47 | /* ========================================================================= */ |
5d620373 | 48 | |
ba126bee | 49 | LeakFinderPtr::LeakFinderPtr(void *p , const char *f, const int l) : |
50 | file(f), line(l), when(squid_curtime) | |
62e76326 | 51 | { |
ba126bee | 52 | key = p; |
53 | next = NULL; | |
62e76326 | 54 | } |
55 | ||
5d620373 | 56 | /* ========================================================================= */ |
57 | ||
ba126bee | 58 | LeakFinder::LeakFinder() |
5d620373 | 59 | { |
bf8fe701 | 60 | debugs(45, 3, "LeakFinder constructed"); |
ba126bee | 61 | table = hash_create(cmp, 1 << 8, hash); |
62 | #if 0 | |
62ee09ca | 63 | /* if this is desired to reinstate, add a |
64 | * RegisterWithCacheManager method | |
65 | */ | |
5d620373 | 66 | cachemgrRegister("leaks", |
62e76326 | 67 | "Memory Leak Tracking", |
ba126bee | 68 | cachemgr_dump, 0, 1); |
69 | #endif | |
5d620373 | 70 | } |
71 | ||
72 | void * | |
c38a2377 | 73 | LeakFinder::addSome(void *p, const char *file, int line) |
5d620373 | 74 | { |
ba126bee | 75 | assert(hash_lookup(table, p) == NULL); |
76 | LeakFinderPtr *c = new LeakFinderPtr(p, file, line); | |
77 | hash_join(table, c); | |
95dc7ff4 | 78 | ++count; |
5d620373 | 79 | return p; |
80 | } | |
81 | ||
82 | void * | |
ba126bee | 83 | LeakFinder::touch(void *p, const char *file, int line) |
5d620373 | 84 | { |
5d620373 | 85 | assert(p); |
ba126bee | 86 | LeakFinderPtr *c = (LeakFinderPtr *) hash_lookup(table, p); |
5d620373 | 87 | assert(c); |
88 | c->file = file; | |
89 | c->line = line; | |
90 | c->when = squid_curtime; | |
91 | return p; | |
92 | } | |
93 | ||
94 | void * | |
c38a2377 | 95 | LeakFinder::freeSome(void *p, const char *file, int line) |
5d620373 | 96 | { |
5d620373 | 97 | assert(p); |
ba126bee | 98 | LeakFinderPtr *c = (LeakFinderPtr *) hash_lookup(table, p); |
99 | assert(c); | |
100 | hash_remove_link(table, c); | |
5e263176 | 101 | --count; |
ba126bee | 102 | delete c; |
103 | dump(); | |
5d620373 | 104 | return p; |
105 | } | |
106 | ||
107 | /* ========================================================================= */ | |
108 | ||
ba126bee | 109 | int |
110 | LeakFinder::cmp(const void *p1, const void *p2) | |
5d620373 | 111 | { |
112 | return (char *) p1 - (char *) p2; | |
113 | } | |
114 | ||
ba126bee | 115 | unsigned int |
116 | LeakFinder::hash(const void *p, unsigned int mod) | |
5d620373 | 117 | { |
118 | return ((unsigned long) p >> 8) % mod; | |
119 | } | |
120 | ||
ba126bee | 121 | void |
122 | LeakFinder::dump() | |
5d620373 | 123 | { |
ba126bee | 124 | if (0 == count) |
125 | return; | |
126 | ||
127 | if (squid_curtime == last_dump) | |
128 | return; | |
129 | ||
130 | last_dump = squid_curtime; | |
131 | ||
e0236918 | 132 | debugs(45, DBG_IMPORTANT, "Tracking " << count << " pointers"); |
ba126bee | 133 | |
134 | hash_first(table); | |
135 | ||
136 | LeakFinderPtr *c; | |
137 | ||
138 | while ((c = (LeakFinderPtr *)hash_next(table))) { | |
e0236918 | 139 | debugs(45, DBG_IMPORTANT, std::setw(20) << c->key << " last used " << std::setw(9) << (squid_curtime - c->when) << |
26ac0430 | 140 | " seconds ago by " << c->file << ":" << c->line); |
5d620373 | 141 | } |
142 | } | |
68488b4a | 143 | |
144 | #endif /* USE_LEAKFINDER */ |