forked from KolibriOS/kolibrios
49 lines
1.2 KiB
C
49 lines
1.2 KiB
C
#ifndef __LINUX_RWLOCK_TYPES_H
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#define __LINUX_RWLOCK_TYPES_H
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/*
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* include/linux/rwlock_types.h - generic rwlock type definitions
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* and initializers
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*
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* portions Copyright 2005, Red Hat, Inc., Ingo Molnar
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* Released under the General Public License (GPL).
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*/
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typedef struct {
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arch_rwlock_t raw_lock;
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#ifdef CONFIG_GENERIC_LOCKBREAK
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unsigned int break_lock;
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#endif
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#ifdef CONFIG_DEBUG_SPINLOCK
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unsigned int magic, owner_cpu;
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void *owner;
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#endif
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#ifdef CONFIG_DEBUG_LOCK_ALLOC
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struct lockdep_map dep_map;
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#endif
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} rwlock_t;
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#define RWLOCK_MAGIC 0xdeaf1eed
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#ifdef CONFIG_DEBUG_LOCK_ALLOC
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# define RW_DEP_MAP_INIT(lockname) .dep_map = { .name = #lockname }
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#else
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# define RW_DEP_MAP_INIT(lockname)
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#endif
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#ifdef CONFIG_DEBUG_SPINLOCK
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#define __RW_LOCK_UNLOCKED(lockname) \
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(rwlock_t) { .raw_lock = __ARCH_RW_LOCK_UNLOCKED, \
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.magic = RWLOCK_MAGIC, \
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.owner = SPINLOCK_OWNER_INIT, \
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.owner_cpu = -1, \
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RW_DEP_MAP_INIT(lockname) }
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#else
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#define __RW_LOCK_UNLOCKED(lockname) \
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(rwlock_t) { .raw_lock = __ARCH_RW_LOCK_UNLOCKED, \
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RW_DEP_MAP_INIT(lockname) }
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#endif
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#define DEFINE_RWLOCK(x) rwlock_t x = __RW_LOCK_UNLOCKED(x)
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#endif /* __LINUX_RWLOCK_TYPES_H */
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