GCC Code Coverage Report

Directory: cvmfs/
File: cvmfs/fd_refcount_mgr.cc
Date: 2025-07-21 10:50:29
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 3454 int FdRefcountMgr::Open(const shash::Any id, const std::string &path) {
18 3454 int result = -1;
19 3454 const MutexLockGuard lock_guard(lock_cache_refcount_);
20
3/4
✓ Branch 1 taken 3454 times.
✗ Branch 2 not taken.
✓ Branch 3 taken 3309 times.
✓ Branch 4 taken 145 times.
 3454 if (!map_fd_.Lookup(id, &result)) {
21
1/2
✓ Branch 2 taken 3309 times.
✗ Branch 3 not taken.
 3309 result = open(path.c_str(), O_RDONLY);
22
2/2
✓ Branch 0 taken 1359 times.
✓ Branch 1 taken 1950 times.
 3309 if (result >= 0) {
23
1/2
✓ Branch 1 taken 1359 times.
✗ Branch 2 not taken.
 1359 map_fd_.Insert(id, result);
24 }
25 }
26
2/2
✓ Branch 0 taken 1504 times.
✓ Branch 1 taken 1950 times.
 3454 if (result >= 0) {
27
1/2
✓ Branch 1 taken 1504 times.
✗ Branch 2 not taken.
 1504 FdRefcountInfo refc_info;
28
3/4
✓ Branch 1 taken 1504 times.
✗ Branch 2 not taken.
✓ Branch 3 taken 145 times.
✓ Branch 4 taken 1359 times.
 1504 if (map_refcount_.Lookup(result, &refc_info)) {
29 145 refc_info.refcount++;
30 } else {
31 1359 refc_info.refcount = 1;
32 1359 refc_info.id = id;
33 }
34
1/2
✓ Branch 1 taken 1504 times.
✗ Branch 2 not taken.
 1504 map_refcount_.Insert(result, refc_info);
35 }
36 3454 return result;
37 3454 }
38
39 1398 int FdRefcountMgr::Close(int fd) {
40 1398 int retval = -1;
41 1398 const MutexLockGuard lock_guard(lock_cache_refcount_);
42
1/2
✓ Branch 1 taken 1398 times.
✗ Branch 2 not taken.
 1398 FdRefcountInfo refc_info;
43
3/4
✓ Branch 1 taken 1398 times.
✗ Branch 2 not taken.
✓ Branch 3 taken 1375 times.
✓ Branch 4 taken 23 times.
 1398 if (map_refcount_.Lookup(fd, &refc_info)) {
44
2/2
✓ Branch 0 taken 120 times.
✓ Branch 1 taken 1255 times.
 1375 if (refc_info.refcount > 1) {
45 120 refc_info.refcount -= 1;
46
1/2
✓ Branch 1 taken 120 times.
✗ Branch 2 not taken.
 120 map_refcount_.Insert(fd, refc_info);
47 120 retval = 0;
48 } else {
49
1/2
✓ Branch 1 taken 1255 times.
✗ Branch 2 not taken.
 1255 retval = close(fd);
50
1/2
✓ Branch 1 taken 1255 times.
✗ Branch 2 not taken.
 1255 map_fd_.Erase(refc_info.id);
51
1/2
✓ Branch 1 taken 1255 times.
✗ Branch 2 not taken.
 1255 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
1/2
✓ Branch 1 taken 23 times.
✗ Branch 2 not taken.
 23 LogCvmfs(kLogCache, kLogDebug,
57 "WARNING: trying to close fd that "
58 " is not in refcount tables");
59
1/2
✓ Branch 1 taken 23 times.
✗ Branch 2 not taken.
 23 retval = close(fd);
60 }
61 1398 return retval;
62 1398 }
63
64 106 int FdRefcountMgr::Dup(int fd) {
65 106 int retval = -1;
66 106 const MutexLockGuard lock_guard(lock_cache_refcount_);
67
1/2
✓ Branch 1 taken 106 times.
✗ Branch 2 not taken.
 106 FdRefcountInfo refc_info;
68
3/4
✓ Branch 1 taken 106 times.
✗ Branch 2 not taken.
✓ Branch 3 taken 53 times.
✓ Branch 4 taken 53 times.
 106 if (map_refcount_.Lookup(fd, &refc_info)) {
69 53 refc_info.refcount += 1;
70
1/2
✓ Branch 1 taken 53 times.
✗ Branch 2 not taken.
 53 map_refcount_.Insert(fd, refc_info);
71 53 retval = fd;
72 } else {
73 // fd not present in our table - this should
74 // not happen in the current usage of Dup
75
1/2
✓ Branch 1 taken 53 times.
✗ Branch 2 not taken.
 53 LogCvmfs(kLogCache, kLogDebug,
76 "WARNING: trying to dup fd that "
77 " is not in refcount tables");
78 53 retval = dup(fd);
79 }
80 106 return retval;
81 106 }
82
83 20 FdRefcountMgr *FdRefcountMgr::Clone() {
84
1/2
✓ Branch 2 taken 20 times.
✗ Branch 3 not taken.
 20 FdRefcountMgr *clone = new FdRefcountMgr(map_refcount_, map_fd_);
85 20 return clone;
86 }
87
88 20 SmallHashDynamic<shash::Any, int> *FdRefcountMgr::GetFdMapPtr() {
89 20 return &map_fd_;
90 }
91
92 SmallHashDynamic<int, FdRefcountMgr::FdRefcountInfo> *
93 20 FdRefcountMgr::GetRefcountMapPtr() {
94 20 return &map_refcount_;
95 }
96
97 20 void FdRefcountMgr::AssignFrom(FdRefcountMgr *other) {
98 20 map_fd_ = *other->GetFdMapPtr();
99 20 map_refcount_ = *other->GetRefcountMapPtr();
100 20 }
101
102 4414 FdRefcountMgr::~FdRefcountMgr() {
103 4414 pthread_mutex_destroy(lock_cache_refcount_);
104 4414 free(lock_cache_refcount_);
105 4414 }
106
107
1/2
✓ Branch 2 taken 4403 times.
✗ Branch 3 not taken.
 4403 FdRefcountMgr::FdRefcountMgr() {
108
1/2
✓ Branch 1 taken 4403 times.
✗ Branch 2 not taken.
 4403 const shash::Any hash_null;
109
1/2
✓ Branch 1 taken 4403 times.
✗ Branch 2 not taken.
 4403 map_fd_.Init(16, hash_null, hasher_any);
110
1/2
✓ Branch 1 taken 4403 times.
✗ Branch 2 not taken.
 4403 map_refcount_.Init(16, -1, hasher_int);
111 4403 lock_cache_refcount_ = reinterpret_cast<pthread_mutex_t *>(
112 4403 smalloc(sizeof(pthread_mutex_t)));
113 4403 const int retval = pthread_mutex_init(lock_cache_refcount_, NULL);
114
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 4403 times.
 4403 assert(retval == 0);
115 4403 }
116
117 20 FdRefcountMgr::FdRefcountMgr(
118 const SmallHashDynamic<int, FdRefcountMgr::FdRefcountInfo> &map_refcount,
119
1/2
✓ Branch 2 taken 20 times.
✗ Branch 3 not taken.
 20 const SmallHashDynamic<shash::Any, int> &map_fd) {
120
1/2
✓ Branch 1 taken 20 times.
✗ Branch 2 not taken.
 20 const shash::Any hash_null;
121
1/2
✓ Branch 1 taken 20 times.
✗ Branch 2 not taken.
 20 map_fd_.Init(16, hash_null, hasher_any);
122
1/2
✓ Branch 1 taken 20 times.
✗ Branch 2 not taken.
 20 map_refcount_.Init(16, -1, hasher_int);
123
1/2
✓ Branch 1 taken 20 times.
✗ Branch 2 not taken.
 20 map_refcount_ = map_refcount;
124
1/2
✓ Branch 1 taken 20 times.
✗ Branch 2 not taken.
 20 map_fd_ = map_fd;
125 20 lock_cache_refcount_ = reinterpret_cast<pthread_mutex_t *>(
126 20 smalloc(sizeof(pthread_mutex_t)));
127 20 const int retval = pthread_mutex_init(lock_cache_refcount_, NULL);
128
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 20 times.
 20 assert(retval == 0);
129 20 }
130