52 lines
1.5 KiB
C
52 lines
1.5 KiB
C
/* $OpenBSD: thread_private.h,v 1.18 2006/02/22 07:16:31 otto Exp $ */
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/* PUBLIC DOMAIN: No Rights Reserved. Marco S Hyman <marc@snafu.org> */
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#ifndef _THREAD_PRIVATE_H_
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#define _THREAD_PRIVATE_H_
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#include <pthread.h>
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/*
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* This file defines the thread library interface to libc. Thread
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* libraries must implement the functions described here for proper
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* inter-operation with libc. libc contains weak versions of the
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* described functions for operation in a non-threaded environment.
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*/
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/*
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* This variable is 0 until a second thread is created.
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*/
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extern int __isthreaded;
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/*
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* helper macro to make unique names in the thread namespace
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*/
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#define __THREAD_NAME(name) __CONCAT(_thread_tagname_,name)
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struct __thread_private_tag_t {
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pthread_mutex_t _private_lock;
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pthread_key_t _private_key;
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};
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#define _THREAD_PRIVATE_MUTEX(name) \
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static struct __thread_private_tag_t __THREAD_NAME(name) = { PTHREAD_MUTEX_INITIALIZER, -1 }
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#define _THREAD_PRIVATE_MUTEX_LOCK(name) \
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pthread_mutex_lock( &__THREAD_NAME(name)._private_lock )
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#define _THREAD_PRIVATE_MUTEX_UNLOCK(name) \
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pthread_mutex_unlock( &__THREAD_NAME(name)._private_lock )
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void _thread_atexit_lock(void);
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void _thread_atexit_unlock(void);
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#define _ATEXIT_LOCK() do { \
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if (__isthreaded) \
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_thread_atexit_lock(); \
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} while (0)
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#define _ATEXIT_UNLOCK() do { \
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if (__isthreaded) \
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_thread_atexit_unlock();\
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} while (0)
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#endif /* _THREAD_PRIVATE_H_ */
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