1 #ifdef JEMALLOC_INTERNAL_TSD_GENERIC_H 2 #error This file should be included only once, by tsd.h. 3 #endif 4 #define JEMALLOC_INTERNAL_TSD_GENERIC_H 5 6 typedef struct tsd_init_block_s tsd_init_block_t; 7 struct tsd_init_block_s { 8 ql_elm(tsd_init_block_t) link; 9 pthread_t thread; 10 void *data; 11 }; 12 13 /* Defined in tsd.c, to allow the mutex headers to have tsd dependencies. */ 14 typedef struct tsd_init_head_s tsd_init_head_t; 15 16 typedef struct { 17 bool initialized; 18 tsd_t val; 19 } tsd_wrapper_t; 20 21 void *tsd_init_check_recursion(tsd_init_head_t *head, 22 tsd_init_block_t *block); 23 void tsd_init_finish(tsd_init_head_t *head, tsd_init_block_t *block); 24 25 extern pthread_key_t tsd_tsd; 26 extern tsd_init_head_t tsd_init_head; 27 extern tsd_wrapper_t tsd_boot_wrapper; 28 extern bool tsd_booted; 29 30 /* Initialization/cleanup. */ 31 JEMALLOC_ALWAYS_INLINE void 32 tsd_cleanup_wrapper(void *arg) { 33 tsd_wrapper_t *wrapper = (tsd_wrapper_t *)arg; 34 35 if (wrapper->initialized) { 36 wrapper->initialized = false; 37 tsd_cleanup(&wrapper->val); 38 if (wrapper->initialized) { 39 /* Trigger another cleanup round. */ 40 if (pthread_setspecific(tsd_tsd, (void *)wrapper) != 0) 41 { 42 malloc_write("<jemalloc>: Error setting TSD\n"); 43 if (opt_abort) { 44 abort(); 45 } 46 } 47 return; 48 } 49 } 50 malloc_tsd_dalloc(wrapper); 51 } 52 53 JEMALLOC_ALWAYS_INLINE void 54 tsd_wrapper_set(tsd_wrapper_t *wrapper) { 55 if (pthread_setspecific(tsd_tsd, (void *)wrapper) != 0) { 56 malloc_write("<jemalloc>: Error setting TSD\n"); 57 abort(); 58 } 59 } 60 61 JEMALLOC_ALWAYS_INLINE tsd_wrapper_t * 62 tsd_wrapper_get(bool init) { 63 tsd_wrapper_t *wrapper = (tsd_wrapper_t *)pthread_getspecific(tsd_tsd); 64 65 if (init && unlikely(wrapper == NULL)) { 66 tsd_init_block_t block; 67 wrapper = (tsd_wrapper_t *) 68 tsd_init_check_recursion(&tsd_init_head, &block); 69 if (wrapper) { 70 return wrapper; 71 } 72 wrapper = (tsd_wrapper_t *) 73 malloc_tsd_malloc(sizeof(tsd_wrapper_t)); 74 block.data = (void *)wrapper; 75 if (wrapper == NULL) { 76 malloc_write("<jemalloc>: Error allocating TSD\n"); 77 abort(); 78 } else { 79 wrapper->initialized = false; 80 JEMALLOC_DIAGNOSTIC_PUSH 81 JEMALLOC_DIAGNOSTIC_IGNORE_MISSING_STRUCT_FIELD_INITIALIZERS 82 tsd_t initializer = TSD_INITIALIZER; 83 JEMALLOC_DIAGNOSTIC_POP 84 wrapper->val = initializer; 85 } 86 tsd_wrapper_set(wrapper); 87 tsd_init_finish(&tsd_init_head, &block); 88 } 89 return wrapper; 90 } 91 92 JEMALLOC_ALWAYS_INLINE bool 93 tsd_boot0(void) { 94 if (pthread_key_create(&tsd_tsd, tsd_cleanup_wrapper) != 0) { 95 return true; 96 } 97 tsd_wrapper_set(&tsd_boot_wrapper); 98 tsd_booted = true; 99 return false; 100 } 101 102 JEMALLOC_ALWAYS_INLINE void 103 tsd_boot1(void) { 104 tsd_wrapper_t *wrapper; 105 wrapper = (tsd_wrapper_t *)malloc_tsd_malloc(sizeof(tsd_wrapper_t)); 106 if (wrapper == NULL) { 107 malloc_write("<jemalloc>: Error allocating TSD\n"); 108 abort(); 109 } 110 tsd_boot_wrapper.initialized = false; 111 tsd_cleanup(&tsd_boot_wrapper.val); 112 wrapper->initialized = false; 113 JEMALLOC_DIAGNOSTIC_PUSH 114 JEMALLOC_DIAGNOSTIC_IGNORE_MISSING_STRUCT_FIELD_INITIALIZERS 115 tsd_t initializer = TSD_INITIALIZER; 116 JEMALLOC_DIAGNOSTIC_POP 117 wrapper->val = initializer; 118 tsd_wrapper_set(wrapper); 119 } 120 121 JEMALLOC_ALWAYS_INLINE bool 122 tsd_boot(void) { 123 if (tsd_boot0()) { 124 return true; 125 } 126 tsd_boot1(); 127 return false; 128 } 129 130 JEMALLOC_ALWAYS_INLINE bool 131 tsd_booted_get(void) { 132 return tsd_booted; 133 } 134 135 JEMALLOC_ALWAYS_INLINE bool 136 tsd_get_allocates(void) { 137 return true; 138 } 139 140 /* Get/set. */ 141 JEMALLOC_ALWAYS_INLINE tsd_t * 142 tsd_get(bool init) { 143 tsd_wrapper_t *wrapper; 144 145 assert(tsd_booted); 146 wrapper = tsd_wrapper_get(init); 147 if (tsd_get_allocates() && !init && wrapper == NULL) { 148 return NULL; 149 } 150 return &wrapper->val; 151 } 152 153 JEMALLOC_ALWAYS_INLINE void 154 tsd_set(tsd_t *val) { 155 tsd_wrapper_t *wrapper; 156 157 assert(tsd_booted); 158 wrapper = tsd_wrapper_get(true); 159 if (likely(&wrapper->val != val)) { 160 wrapper->val = *(val); 161 } 162 wrapper->initialized = true; 163 } 164