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>Thread-Specific Data [POSIX Section 17]</TITLE
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NAME="POSIX-THREAD-SPECIFIC-DATA">Thread-Specific Data [POSIX Section 17]</H1
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NAME="POSIX-THREAD-SPECIFIC-DATA">Thread-Specific Data [POSIX Section 17]</H1
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><H2
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NAME="AEN13287">Functions Implemented</H2
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NAME="AEN13287">Functions Implemented</H2
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>int pthread_key_create(pthread_key_t *key,
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>int pthread_key_create(pthread_key_t *key,
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void (*destructor)(void *));
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void (*destructor)(void *));
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int pthread_setspecific(pthread_key_t key, const void *pointer);
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int pthread_setspecific(pthread_key_t key, const void *pointer);
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void *pthread_getspecific(pthread_key_t key);
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void *pthread_getspecific(pthread_key_t key);
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int pthread_key_delete(pthread_key_t key);</PRE
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int pthread_key_delete(pthread_key_t key);</PRE
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NAME="AEN13290">Functions Omitted</H2
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NAME="AEN13290">Functions Omitted</H2
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><P
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><P
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><none></P
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NAME="AEN13293">Notes</H2
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NAME="AEN13293">Notes</H2
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><LI
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><LI
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><P
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><P
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> The value of PTHREAD_DESTRUCTOR_ITERATIONS is
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> The value of PTHREAD_DESTRUCTOR_ITERATIONS is
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provided by the
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provided by the
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CYGNUM_POSIX_PTHREAD_DESTRUCTOR_ITERATIONS
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CYGNUM_POSIX_PTHREAD_DESTRUCTOR_ITERATIONS
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option. This controls the number of times that a key destructor
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option. This controls the number of times that a key destructor
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will be called while the data item remains non-NULL.
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will be called while the data item remains non-NULL.
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</P
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</P
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></LI
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></LI
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><LI
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><LI
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><P
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><P
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> The value of PTHREAD_KEYS_MAX is provided
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> The value of PTHREAD_KEYS_MAX is provided
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by the CYGNUM_POSIX_PTHREAD_KEYS_MAX
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by the CYGNUM_POSIX_PTHREAD_KEYS_MAX
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option. This defines the maximum number of per-thread data items
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option. This defines the maximum number of per-thread data items
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supported. The POSIX standard calls for this to be a minimum of
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supported. The POSIX standard calls for this to be a minimum of
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128, which is rather large for an embedded system. The default
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128, which is rather large for an embedded system. The default
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value for this option is set to 128 for compatibility but it
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value for this option is set to 128 for compatibility but it
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should be reduced to a more usable value.
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should be reduced to a more usable value.
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