posix/pthread/pthread_key.cpp

17 /*!	Retrieves the destructor of a key locklessly.
21 get_key_destructor(uint32 key, int32& sequence)
26 		sequence = sKeyTable[key].sequence;
30 		destructor = sKeyTable[key].destructor;
31 	} while (sKeyTable[key].sequence != sequence);
37 /*!	Function to get the thread specific value of a key in a lockless
39 	\a sequence must be the sequence of the key table that this value
43 get_key_value(pthread_thread* thread, uint32 key, int32 sequence)
45 	pthread_key_data& keyData = thread->specific[key];
66 	for (uint32 key = 0; key < PTHREAD_KEYS_MAX; key++) {
68 		pthread_key_destructor destructor = get_key_destructor(key, sequence);
69 		void* value = get_key_value(thread, key, sequence);
85 	for (uint32 key = 0; key < PTHREAD_KEYS_MAX; key++) {
86 		int32 sequence = sKeyTable[key].sequence;
92 		if (atomic_test_and_set(&sKeyTable[key].sequence, nextSequence,
96 		sKeyTable[key].destructor = destructor;
97 		*_key = key;
106 pthread_key_delete(pthread_key_t key)
108 	if (key < 0 || key >= PTHREAD_KEYS_MAX)
111 	int32 sequence = atomic_get_and_set(&sKeyTable[key].sequence,
121 pthread_getspecific(pthread_key_t key)
125 	if (key < 0 || key >= PTHREAD_KEYS_MAX)
128 	// check if this key is used, and our value belongs to its current meaning
129 	int32 sequence = atomic_get(&sKeyTable[key].sequence);
131 		|| thread->specific[key].sequence != sequence)
134 	return thread->specific[key].value;
139 pthread_setspecific(pthread_key_t key, const void* value)
141 	if (key < 0 || key >= PTHREAD_KEYS_MAX)
144 	int32 sequence = atomic_get(&sKeyTable[key].sequence);
148 	pthread_key_data& keyData = pthread_self()->specific[key];