/src/libgit2/src/util/thread.c
Line | Count | Source (jump to first uncovered line) |
1 | | /* |
2 | | * Copyright (C) the libgit2 contributors. All rights reserved. |
3 | | * |
4 | | * This file is part of libgit2, distributed under the GNU GPL v2 with |
5 | | * a Linking Exception. For full terms see the included COPYING file. |
6 | | */ |
7 | | |
8 | | #include "git2_util.h" |
9 | | |
10 | | #if !defined(GIT_THREADS) |
11 | | |
12 | | #define TLSDATA_MAX 16 |
13 | | |
14 | | typedef struct { |
15 | | void *value; |
16 | | void (GIT_SYSTEM_CALL *destroy_fn)(void *); |
17 | | } tlsdata_value; |
18 | | |
19 | | static tlsdata_value tlsdata_values[TLSDATA_MAX]; |
20 | | static int tlsdata_cnt = 0; |
21 | | |
22 | | int git_tlsdata_init(git_tlsdata_key *key, void (GIT_SYSTEM_CALL *destroy_fn)(void *)) |
23 | | { |
24 | | if (tlsdata_cnt >= TLSDATA_MAX) |
25 | | return -1; |
26 | | |
27 | | tlsdata_values[tlsdata_cnt].value = NULL; |
28 | | tlsdata_values[tlsdata_cnt].destroy_fn = destroy_fn; |
29 | | |
30 | | *key = tlsdata_cnt; |
31 | | tlsdata_cnt++; |
32 | | |
33 | | return 0; |
34 | | } |
35 | | |
36 | | int git_tlsdata_set(git_tlsdata_key key, void *value) |
37 | | { |
38 | | if (key < 0 || key > tlsdata_cnt) |
39 | | return -1; |
40 | | |
41 | | tlsdata_values[key].value = value; |
42 | | return 0; |
43 | | } |
44 | | |
45 | | void *git_tlsdata_get(git_tlsdata_key key) |
46 | | { |
47 | | if (key < 0 || key > tlsdata_cnt) |
48 | | return NULL; |
49 | | |
50 | | return tlsdata_values[key].value; |
51 | | } |
52 | | |
53 | | int git_tlsdata_dispose(git_tlsdata_key key) |
54 | | { |
55 | | void *value; |
56 | | void (*destroy_fn)(void *) = NULL; |
57 | | |
58 | | if (key < 0 || key > tlsdata_cnt) |
59 | | return -1; |
60 | | |
61 | | value = tlsdata_values[key].value; |
62 | | destroy_fn = tlsdata_values[key].destroy_fn; |
63 | | |
64 | | tlsdata_values[key].value = NULL; |
65 | | tlsdata_values[key].destroy_fn = NULL; |
66 | | |
67 | | if (value && destroy_fn) |
68 | | destroy_fn(value); |
69 | | |
70 | | return 0; |
71 | | } |
72 | | |
73 | | #elif defined(GIT_WIN32) |
74 | | |
75 | | int git_tlsdata_init(git_tlsdata_key *key, void (GIT_SYSTEM_CALL *destroy_fn)(void *)) |
76 | | { |
77 | | DWORD fls_index = FlsAlloc(destroy_fn); |
78 | | |
79 | | if (fls_index == FLS_OUT_OF_INDEXES) |
80 | | return -1; |
81 | | |
82 | | *key = fls_index; |
83 | | return 0; |
84 | | } |
85 | | |
86 | | int git_tlsdata_set(git_tlsdata_key key, void *value) |
87 | | { |
88 | | if (!FlsSetValue(key, value)) |
89 | | return -1; |
90 | | |
91 | | return 0; |
92 | | } |
93 | | |
94 | | void *git_tlsdata_get(git_tlsdata_key key) |
95 | | { |
96 | | return FlsGetValue(key); |
97 | | } |
98 | | |
99 | | int git_tlsdata_dispose(git_tlsdata_key key) |
100 | | { |
101 | | if (!FlsFree(key)) |
102 | | return -1; |
103 | | |
104 | | return 0; |
105 | | } |
106 | | |
107 | | #elif defined(_POSIX_THREADS) |
108 | | |
109 | | int git_tlsdata_init(git_tlsdata_key *key, void (GIT_SYSTEM_CALL *destroy_fn)(void *)) |
110 | 4 | { |
111 | 4 | if (pthread_key_create(key, destroy_fn) != 0) |
112 | 0 | return -1; |
113 | | |
114 | 4 | return 0; |
115 | 4 | } |
116 | | |
117 | | int git_tlsdata_set(git_tlsdata_key key, void *value) |
118 | 2 | { |
119 | 2 | if (pthread_setspecific(key, value) != 0) |
120 | 0 | return -1; |
121 | | |
122 | 2 | return 0; |
123 | 2 | } |
124 | | |
125 | | void *git_tlsdata_get(git_tlsdata_key key) |
126 | 127k | { |
127 | 127k | return pthread_getspecific(key); |
128 | 127k | } |
129 | | |
130 | | int git_tlsdata_dispose(git_tlsdata_key key) |
131 | 0 | { |
132 | 0 | if (pthread_key_delete(key) != 0) |
133 | 0 | return -1; |
134 | | |
135 | 0 | return 0; |
136 | 0 | } |
137 | | |
138 | | #else |
139 | | # error unknown threading model |
140 | | #endif |