GCC Code Coverage Report

Directory: cvmfs/
File: cvmfs/fd_refcount_mgr.cc
Date: 2025-11-09 02:35:23
Exec Total Coverage
Lines: 80 80 100.0%
Branches: 45 76 59.2%
Line Branch Exec Source
1 /**
2 * This file is part of the CernVM File System.
3 */
4
5 #include "fd_refcount_mgr.h"
6
7 #include <fcntl.h>
8 #include <unistd.h>
9
10 #include <cassert>
11 #include <string>
12
13 #include "util/mutex.h"
14 #include "util/smalloc.h"
15
16
17 4314 int FdRefcountMgr::Open(const shash::Any id, const std::string &path) {
18 4314 int result = -1;
19 4314 const MutexLockGuard lock_guard(lock_cache_refcount_);
20
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 4314 if (!map_fd_.Lookup(id, &result)) {
21
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 4151 result = open(path.c_str(), O_RDONLY);
22
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 4151 if (result >= 0) {
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 1559 map_fd_.Insert(id, result);
24 }
25 }
26
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 4314 if (result >= 0) {
27
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 1722 FdRefcountInfo refc_info;
28
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 1722 if (map_refcount_.Lookup(result, &refc_info)) {
29 163 refc_info.refcount++;
30 } else {
31 1559 refc_info.refcount = 1;
32 1559 refc_info.id = id;
33 }
34
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 1722 map_refcount_.Insert(result, refc_info);
35 }
36 4314 return result;
37 4314 }
38
39 1585 int FdRefcountMgr::Close(int fd) {
40 1585 int retval = -1;
41 1585 const MutexLockGuard lock_guard(lock_cache_refcount_);
42
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 1585 FdRefcountInfo refc_info;
43
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 1585 if (map_refcount_.Lookup(fd, &refc_info)) {
44
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 1575 if (refc_info.refcount > 1) {
45 132 refc_info.refcount -= 1;
46
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 132 map_refcount_.Insert(fd, refc_info);
47 132 retval = 0;
48 } else {
49
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 1443 retval = close(fd);
50
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 1443 map_fd_.Erase(refc_info.id);
51
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 1443 map_refcount_.Erase(fd);
52 }
53 } else {
54 // fd not present in our table - this should only happen
55 // when reloading from the normal posix cache manager!
56
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 10 LogCvmfs(kLogCache, kLogDebug,
57 "WARNING: trying to close fd that "
58 " is not in refcount tables");
59
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 10 retval = close(fd);
60 }
61 1585 return retval;
62 1585 }
63
64 112 int FdRefcountMgr::Dup(int fd) {
65 112 int retval = -1;
66 112 const MutexLockGuard lock_guard(lock_cache_refcount_);
67
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 112 FdRefcountInfo refc_info;
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 112 if (map_refcount_.Lookup(fd, &refc_info)) {
69 56 refc_info.refcount += 1;
70
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 56 map_refcount_.Insert(fd, refc_info);
71 56 retval = fd;
72 } else {
73 // fd not present in our table - this should
74 // not happen in the current usage of Dup
75
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 56 LogCvmfs(kLogCache, kLogDebug,
76 "WARNING: trying to dup fd that "
77 " is not in refcount tables");
78 56 retval = dup(fd);
79 }
80 112 return retval;
81 112 }
82
83 10 FdRefcountMgr *FdRefcountMgr::Clone() {
84
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 10 FdRefcountMgr *clone = new FdRefcountMgr(map_refcount_, map_fd_);
85 10 return clone;
86 }
87
88 10 SmallHashDynamic<shash::Any, int> *FdRefcountMgr::GetFdMapPtr() {
89 10 return &map_fd_;
90 }
91
92 SmallHashDynamic<int, FdRefcountMgr::FdRefcountInfo> *
93 10 FdRefcountMgr::GetRefcountMapPtr() {
94 10 return &map_refcount_;
95 }
96
97 10 void FdRefcountMgr::AssignFrom(FdRefcountMgr *other) {
98 10 map_fd_ = *other->GetFdMapPtr();
99 10 map_refcount_ = *other->GetRefcountMapPtr();
100 10 }
101
102 2509 FdRefcountMgr::~FdRefcountMgr() {
103 2509 pthread_mutex_destroy(lock_cache_refcount_);
104 2509 free(lock_cache_refcount_);
105 2509 }
106
107
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 2508 FdRefcountMgr::FdRefcountMgr() {
108
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 2508 const shash::Any hash_null;
109
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 2508 map_fd_.Init(16, hash_null, hasher_any);
110
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 2508 map_refcount_.Init(16, -1, hasher_int);
111 2508 lock_cache_refcount_ = reinterpret_cast<pthread_mutex_t *>(
112 2508 smalloc(sizeof(pthread_mutex_t)));
113 2508 const int retval = pthread_mutex_init(lock_cache_refcount_, NULL);
114
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 2508 assert(retval == 0);
115 2508 }
116
117 10 FdRefcountMgr::FdRefcountMgr(
118 const SmallHashDynamic<int, FdRefcountMgr::FdRefcountInfo> &map_refcount,
119
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 10 const SmallHashDynamic<shash::Any, int> &map_fd) {
120
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 10 const shash::Any hash_null;
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 10 map_fd_.Init(16, hash_null, hasher_any);
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 10 map_refcount_.Init(16, -1, hasher_int);
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 10 map_refcount_ = map_refcount;
124
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 10 map_fd_ = map_fd;
125 10 lock_cache_refcount_ = reinterpret_cast<pthread_mutex_t *>(
126 10 smalloc(sizeof(pthread_mutex_t)));
127 10 const int retval = pthread_mutex_init(lock_cache_refcount_, NULL);
128
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 10 assert(retval == 0);
129 10 }
130