1 #define JEMALLOC_TSD_C_
2 #include "jemalloc/internal/jemalloc_internal.h"
3
4 /******************************************************************************/
5 /* Data. */
6
7 static unsigned ncleanups;
8 static malloc_tsd_cleanup_t cleanups[MALLOC_TSD_CLEANUPS_MAX];
9
10 malloc_tsd_data(, , tsd_t, TSD_INITIALIZER)
11
12 /******************************************************************************/
13
14 void *
malloc_tsd_malloc(size_t size)15 malloc_tsd_malloc(size_t size)
16 {
17
18 return (a0malloc(CACHELINE_CEILING(size)));
19 }
20
21 void
malloc_tsd_dalloc(void * wrapper)22 malloc_tsd_dalloc(void *wrapper)
23 {
24
25 a0dalloc(wrapper);
26 }
27
28 void
malloc_tsd_no_cleanup(void * arg)29 malloc_tsd_no_cleanup(void *arg)
30 {
31
32 not_reached();
33 }
34
35 #if defined(JEMALLOC_MALLOC_THREAD_CLEANUP) || defined(_WIN32)
36 #ifndef _WIN32
37 JEMALLOC_EXPORT
38 #endif
39 void
_malloc_thread_cleanup(void)40 _malloc_thread_cleanup(void)
41 {
42 bool pending[MALLOC_TSD_CLEANUPS_MAX], again;
43 unsigned i;
44
45 for (i = 0; i < ncleanups; i++)
46 pending[i] = true;
47
48 do {
49 again = false;
50 for (i = 0; i < ncleanups; i++) {
51 if (pending[i]) {
52 pending[i] = cleanups[i]();
53 if (pending[i])
54 again = true;
55 }
56 }
57 } while (again);
58 }
59 #endif
60
61 void
malloc_tsd_cleanup_register(bool (* f)(void))62 malloc_tsd_cleanup_register(bool (*f)(void))
63 {
64
65 assert(ncleanups < MALLOC_TSD_CLEANUPS_MAX);
66 cleanups[ncleanups] = f;
67 ncleanups++;
68 }
69
70 void
tsd_cleanup(void * arg)71 tsd_cleanup(void *arg)
72 {
73 tsd_t *tsd = (tsd_t *)arg;
74
75 switch (tsd->state) {
76 case tsd_state_uninitialized:
77 /* Do nothing. */
78 break;
79 case tsd_state_nominal:
80 #define O(n, t) \
81 n##_cleanup(tsd);
82 MALLOC_TSD
83 #undef O
84 tsd->state = tsd_state_purgatory;
85 tsd_set(tsd);
86 break;
87 case tsd_state_purgatory:
88 /*
89 * The previous time this destructor was called, we set the
90 * state to tsd_state_purgatory so that other destructors
91 * wouldn't cause re-creation of the tsd. This time, do
92 * nothing, and do not request another callback.
93 */
94 break;
95 case tsd_state_reincarnated:
96 /*
97 * Another destructor deallocated memory after this destructor
98 * was called. Reset state to tsd_state_purgatory and request
99 * another callback.
100 */
101 tsd->state = tsd_state_purgatory;
102 tsd_set(tsd);
103 break;
104 default:
105 not_reached();
106 }
107 }
108
109 tsd_t *
malloc_tsd_boot0(void)110 malloc_tsd_boot0(void)
111 {
112 tsd_t *tsd;
113
114 ncleanups = 0;
115 if (tsd_boot0())
116 return (NULL);
117 tsd = tsd_fetch();
118 *tsd_arenas_tdata_bypassp_get(tsd) = true;
119 return (tsd);
120 }
121
122 void
malloc_tsd_boot1(void)123 malloc_tsd_boot1(void)
124 {
125
126 tsd_boot1();
127 *tsd_arenas_tdata_bypassp_get(tsd_fetch()) = false;
128 }
129
130 #ifdef _WIN32
131 static BOOL WINAPI
_tls_callback(HINSTANCE hinstDLL,DWORD fdwReason,LPVOID lpvReserved)132 _tls_callback(HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpvReserved)
133 {
134
135 switch (fdwReason) {
136 #ifdef JEMALLOC_LAZY_LOCK
137 case DLL_THREAD_ATTACH:
138 isthreaded = true;
139 break;
140 #endif
141 case DLL_THREAD_DETACH:
142 _malloc_thread_cleanup();
143 break;
144 default:
145 break;
146 }
147 return (true);
148 }
149
150 #ifdef _MSC_VER
151 # ifdef _M_IX86
152 # pragma comment(linker, "/INCLUDE:__tls_used")
153 # pragma comment(linker, "/INCLUDE:_tls_callback")
154 # else
155 # pragma comment(linker, "/INCLUDE:_tls_used")
156 # pragma comment(linker, "/INCLUDE:tls_callback")
157 # endif
158 # pragma section(".CRT$XLY",long,read)
159 #endif
160 JEMALLOC_SECTION(".CRT$XLY") JEMALLOC_ATTR(used)
161 BOOL (WINAPI *const tls_callback)(HINSTANCE hinstDLL,
162 DWORD fdwReason, LPVOID lpvReserved) = _tls_callback;
163 #endif
164
165 #if (!defined(JEMALLOC_MALLOC_THREAD_CLEANUP) && !defined(JEMALLOC_TLS) && \
166 !defined(_WIN32))
167 void *
tsd_init_check_recursion(tsd_init_head_t * head,tsd_init_block_t * block)168 tsd_init_check_recursion(tsd_init_head_t *head, tsd_init_block_t *block)
169 {
170 pthread_t self = pthread_self();
171 tsd_init_block_t *iter;
172
173 /* Check whether this thread has already inserted into the list. */
174 malloc_mutex_lock(TSDN_NULL, &head->lock);
175 ql_foreach(iter, &head->blocks, link) {
176 if (iter->thread == self) {
177 malloc_mutex_unlock(TSDN_NULL, &head->lock);
178 return (iter->data);
179 }
180 }
181 /* Insert block into list. */
182 ql_elm_new(block, link);
183 block->thread = self;
184 ql_tail_insert(&head->blocks, block, link);
185 malloc_mutex_unlock(TSDN_NULL, &head->lock);
186 return (NULL);
187 }
188
189 void
tsd_init_finish(tsd_init_head_t * head,tsd_init_block_t * block)190 tsd_init_finish(tsd_init_head_t *head, tsd_init_block_t *block)
191 {
192
193 malloc_mutex_lock(TSDN_NULL, &head->lock);
194 ql_remove(&head->blocks, block, link);
195 malloc_mutex_unlock(TSDN_NULL, &head->lock);
196 }
197 #endif
198