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* mutex.c (pthread_mutexattr_setprotocol): Remove; not supported.
(pthread_mutexattr_getprotocol): Likewise.
(pthread_mutexattr_setprioceiling): Likewise.
(pthread_mutexattr_getprioceiling): Likewise.
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* attr.c (pthread_setstacksize): Update test of attr argument.
(pthread_getstacksize): Likewise.
(pthread_setstackaddr): Likewise.
(pthread_getstackaddr): Likewise.
(pthread_attr_init): No need to allocate any storage.
(pthread_attr_destroy): No need to free any storage.
* mutex.c (is_attr): Not likely to be needed; remove.
(remove_attr): Likewise.
(insert_attr): Likewise.
* pthread.h (pthread_attr_t): Moved here from implement.h.
* implement.h (_pthread_mutexattr_t): Moved to a public definition
in pthread.h. There was little gain in hiding these details.
(_pthread_condattr_t): Likewise.
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* mutex.c (pthread_mutex_trylock): Return ENOSYS if this function
is called on a Win32 platform which is not Windows NT.
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* mutex.c (pthread_mutex_init): Use InitializeCritcalSection().
(pthread_mutex_destroy): Use DeleteCriticalSection().
(pthread_mutex_lock): Use EnterCriticalSection().
(pthread_mutex_trylock): Use TryEnterCriticalSection(). This is
not supported by Windows 9x, but trylock is a hack anyway, IMHO.
(pthread_mutex_unlock): Use LeaveCriticalSection().
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* mutex.c (pthread_mutexattr_init): No need to malloc any storage;
the attributes structure is now empty.
(pthread_mutexattr_destroy): This is now a nop.
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* mutex.c (pthread_mutexattr_setpshared): This optional function
is no longer supported, since we want to implement POSIX mutex
variables using the much more efficient Win32 critical section
primitives. Critical section objects in Win32 cannot be shared
between processes.
(pthread_mutexattr_getpshared): Likewise.
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* mutex.c (pthread_mutex_lock): Add `_mutex' to function name.
(pthread_mutex_trylock): Likewise.
(pthread_mutex_unlock): Likewise.
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* mutex.c (pthread_mutex_init): Implement.
(pthread_mutex_destroy): Likewise.
(pthread_lock): Likewise.
(pthread_trylock): Likewise.
(pthread_unlock): Likewise.
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(pthread_mutexattr_destroy): Implement.
(pthread_mutexattr_setpshared): Likewise.
(pthread_mutexattr_getpshared): Likewise.
(insert_attr): New function; very preliminary implementation!
(is_attr): Likewise.
(remove_attr): Likewise.
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* mutex.c (pthread_mutexattr_setprotocol): Implement.
(pthread_mutexattr_getprotocol): Likewise.
(pthread_mutexattr_setprioceiling): Likewise.
(pthread_mutexattr_getprioceiling): Likewise.
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