b8f5f135fe
The ocf_async_lock may be used in atomic context, thus we need to replace synchronization primitives to non-sleeping variants. Signed-off-by: Robert Baldyga <robert.baldyga@intel.com>
51 lines
1.3 KiB
C
51 lines
1.3 KiB
C
/*
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* Copyright(c) 2019 Intel Corporation
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* SPDX-License-Identifier: BSD-3-Clause-Clear
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*/
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#ifndef __UTILS_ASYNC_LOCK_H__
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#define __UTILS_ASYNC_LOCK_H__
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#include "ocf_env.h"
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struct ocf_async_lock {
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struct list_head waiters;
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env_spinlock waiters_lock;
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uint32_t rd;
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uint32_t wr;
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uint32_t waiter_priv_size;
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};
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typedef struct ocf_async_lock *ocf_async_lock_t;
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typedef struct ocf_async_lock_waiter *ocf_async_lock_waiter_t;
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typedef void (*ocf_async_lock_end_t)(ocf_async_lock_waiter_t waiter, int error);
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int ocf_async_lock_init(ocf_async_lock_t lock, uint32_t waiter_priv_size);
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void ocf_async_lock_deinit(ocf_async_lock_t lock);
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ocf_async_lock_waiter_t ocf_async_lock_new_waiter(ocf_async_lock_t lock,
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ocf_async_lock_end_t cmpl);
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ocf_async_lock_t ocf_async_lock_waiter_get_lock(ocf_async_lock_waiter_t waiter);
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void *ocf_async_lock_waiter_get_priv(ocf_async_lock_waiter_t waiter);
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void ocf_async_lock(ocf_async_lock_waiter_t waiter);
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int ocf_async_trylock(struct ocf_async_lock *lock);
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void ocf_async_unlock(struct ocf_async_lock *lock);
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void ocf_async_read_lock(ocf_async_lock_waiter_t waiter);
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int ocf_async_read_trylock(struct ocf_async_lock *lock);
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void ocf_async_read_unlock(struct ocf_async_lock *lock);
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bool ocf_async_is_locked(struct ocf_async_lock *lock);
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#endif /* __UTILS_ASYNC_LOCK_H__ */
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