GCC Code Coverage Report

Directory: cvmfs/
File: cvmfs/fd_refcount_mgr.cc
Date: 2026-05-10 02:36:07
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 5088 int FdRefcountMgr::Open(const shash::Any id, const std::string &path) {
18 5088 int result = -1;
19 5088 const MutexLockGuard lock_guard(lock_cache_refcount_);
20
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 5088 if (!map_fd_.Lookup(id, &result)) {
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 4838 result = open(path.c_str(), O_RDONLY);
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 4838 if (result >= 0) {
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 2019 map_fd_.Insert(id, result);
24 }
25 }
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 5088 if (result >= 0) {
27
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 2269 FdRefcountInfo refc_info;
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 2269 if (map_refcount_.Lookup(result, &refc_info)) {
29 250 refc_info.refcount++;
30 } else {
31 2019 refc_info.refcount = 1;
32 2019 refc_info.id = id;
33 }
34
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 2269 map_refcount_.Insert(result, refc_info);
35 }
36 5088 return result;
37 5088 }
38
39 2056 int FdRefcountMgr::Close(int fd) {
40 2056 int retval = -1;
41 2056 const MutexLockGuard lock_guard(lock_cache_refcount_);
42
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 2056 FdRefcountInfo refc_info;
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 2056 if (map_refcount_.Lookup(fd, &refc_info)) {
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 2016 if (refc_info.refcount > 1) {
45 193 refc_info.refcount -= 1;
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 193 map_refcount_.Insert(fd, refc_info);
47 193 retval = 0;
48 } else {
49
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 1823 retval = close(fd);
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 1823 map_fd_.Erase(refc_info.id);
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 1823 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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 40 LogCvmfs(kLogCache, kLogDebug,
57 "WARNING: trying to close fd that "
58 " is not in refcount tables");
59
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 40 retval = close(fd);
60 }
61 2056 return retval;
62 2056 }
63
64 180 int FdRefcountMgr::Dup(int fd) {
65 180 int retval = -1;
66 180 const MutexLockGuard lock_guard(lock_cache_refcount_);
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 180 FdRefcountInfo refc_info;
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 180 if (map_refcount_.Lookup(fd, &refc_info)) {
69 90 refc_info.refcount += 1;
70
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 90 map_refcount_.Insert(fd, refc_info);
71 90 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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 90 LogCvmfs(kLogCache, kLogDebug,
76 "WARNING: trying to dup fd that "
77 " is not in refcount tables");
78 90 retval = dup(fd);
79 }
80 180 return retval;
81 180 }
82
83 40 FdRefcountMgr *FdRefcountMgr::Clone() {
84
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 40 FdRefcountMgr *clone = new FdRefcountMgr(map_refcount_, map_fd_);
85 40 return clone;
86 }
87
88 40 SmallHashDynamic<shash::Any, int> *FdRefcountMgr::GetFdMapPtr() {
89 40 return &map_fd_;
90 }
91
92 SmallHashDynamic<int, FdRefcountMgr::FdRefcountInfo> *
93 40 FdRefcountMgr::GetRefcountMapPtr() {
94 40 return &map_refcount_;
95 }
96
97 40 void FdRefcountMgr::AssignFrom(FdRefcountMgr *other) {
98 40 map_fd_ = *other->GetFdMapPtr();
99 40 map_refcount_ = *other->GetRefcountMapPtr();
100 40 }
101
102 5601 FdRefcountMgr::~FdRefcountMgr() {
103 5601 pthread_mutex_destroy(lock_cache_refcount_);
104 5601 free(lock_cache_refcount_);
105 5601 }
106
107
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 5570 FdRefcountMgr::FdRefcountMgr() {
108
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 5570 const shash::Any hash_null;
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 5570 map_fd_.Init(16, hash_null, hasher_any);
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 5570 map_refcount_.Init(16, -1, hasher_int);
111 5570 lock_cache_refcount_ = reinterpret_cast<pthread_mutex_t *>(
112 5570 smalloc(sizeof(pthread_mutex_t)));
113 5570 const int retval = pthread_mutex_init(lock_cache_refcount_, NULL);
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 5570 assert(retval == 0);
115 5570 }
116
117 40 FdRefcountMgr::FdRefcountMgr(
118 const SmallHashDynamic<int, FdRefcountMgr::FdRefcountInfo> &map_refcount,
119
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 40 const SmallHashDynamic<shash::Any, int> &map_fd) {
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 40 const shash::Any hash_null;
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 40 map_fd_.Init(16, hash_null, hasher_any);
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 40 map_refcount_.Init(16, -1, hasher_int);
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 40 map_refcount_ = map_refcount;
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 40 map_fd_ = map_fd;
125 40 lock_cache_refcount_ = reinterpret_cast<pthread_mutex_t *>(
126 40 smalloc(sizeof(pthread_mutex_t)));
127 40 const int retval = pthread_mutex_init(lock_cache_refcount_, NULL);
128
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 40 assert(retval == 0);
129 40 }
130