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Diffstat (limited to 'lib/libspl/include/atomic.h')
| -rw-r--r-- | lib/libspl/include/atomic.h | 347 |
1 files changed, 0 insertions, 347 deletions
diff --git a/lib/libspl/include/atomic.h b/lib/libspl/include/atomic.h deleted file mode 100644 index cc6f2e2ce988..000000000000 --- a/lib/libspl/include/atomic.h +++ /dev/null @@ -1,347 +0,0 @@ -// SPDX-License-Identifier: CDDL-1.0 -/* - * CDDL HEADER START - * - * The contents of this file are subject to the terms of the - * Common Development and Distribution License (the "License"). - * You may not use this file except in compliance with the License. - * - * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE - * or https://opensource.org/licenses/CDDL-1.0. - * See the License for the specific language governing permissions - * and limitations under the License. - * - * When distributing Covered Code, include this CDDL HEADER in each - * file and include the License file at usr/src/OPENSOLARIS.LICENSE. - * If applicable, add the following below this CDDL HEADER, with the - * fields enclosed by brackets "[]" replaced with your own identifying - * information: Portions Copyright [yyyy] [name of copyright owner] - * - * CDDL HEADER END - */ - -/* - * Copyright 2005 Sun Microsystems, Inc. All rights reserved. - * Use is subject to license terms. - */ - -#ifndef _SYS_ATOMIC_H -#define _SYS_ATOMIC_H - -#include <sys/types.h> -#include <sys/inttypes.h> - -#ifdef __cplusplus -extern "C" { -#endif - -#if defined(__STDC__) -/* - * Increment target. - */ -extern void atomic_inc_8(volatile uint8_t *); -extern void atomic_inc_uchar(volatile uchar_t *); -extern void atomic_inc_16(volatile uint16_t *); -extern void atomic_inc_ushort(volatile ushort_t *); -extern void atomic_inc_32(volatile uint32_t *); -extern void atomic_inc_uint(volatile uint_t *); -extern void atomic_inc_ulong(volatile ulong_t *); -#if defined(_INT64_TYPE) -extern void atomic_inc_64(volatile uint64_t *); -#endif - -/* - * Decrement target - */ -extern void atomic_dec_8(volatile uint8_t *); -extern void atomic_dec_uchar(volatile uchar_t *); -extern void atomic_dec_16(volatile uint16_t *); -extern void atomic_dec_ushort(volatile ushort_t *); -extern void atomic_dec_32(volatile uint32_t *); -extern void atomic_dec_uint(volatile uint_t *); -extern void atomic_dec_ulong(volatile ulong_t *); -#if defined(_INT64_TYPE) -extern void atomic_dec_64(volatile uint64_t *); -#endif - -/* - * Add delta to target - */ -extern void atomic_add_8(volatile uint8_t *, int8_t); -extern void atomic_add_char(volatile uchar_t *, signed char); -extern void atomic_add_16(volatile uint16_t *, int16_t); -extern void atomic_add_short(volatile ushort_t *, short); -extern void atomic_add_32(volatile uint32_t *, int32_t); -extern void atomic_add_int(volatile uint_t *, int); -extern void atomic_add_ptr(volatile void *, ssize_t); -extern void atomic_add_long(volatile ulong_t *, long); -#if defined(_INT64_TYPE) -extern void atomic_add_64(volatile uint64_t *, int64_t); -#endif - -/* - * Subtract delta from target - */ -extern void atomic_sub_8(volatile uint8_t *, int8_t); -extern void atomic_sub_char(volatile uchar_t *, signed char); -extern void atomic_sub_16(volatile uint16_t *, int16_t); -extern void atomic_sub_short(volatile ushort_t *, short); -extern void atomic_sub_32(volatile uint32_t *, int32_t); -extern void atomic_sub_int(volatile uint_t *, int); -extern void atomic_sub_ptr(volatile void *, ssize_t); -extern void atomic_sub_long(volatile ulong_t *, long); -#if defined(_INT64_TYPE) -extern void atomic_sub_64(volatile uint64_t *, int64_t); -#endif - -/* - * logical OR bits with target - */ -extern void atomic_or_8(volatile uint8_t *, uint8_t); -extern void atomic_or_uchar(volatile uchar_t *, uchar_t); -extern void atomic_or_16(volatile uint16_t *, uint16_t); -extern void atomic_or_ushort(volatile ushort_t *, ushort_t); -extern void atomic_or_32(volatile uint32_t *, uint32_t); -extern void atomic_or_uint(volatile uint_t *, uint_t); -extern void atomic_or_ulong(volatile ulong_t *, ulong_t); -#if defined(_INT64_TYPE) -extern void atomic_or_64(volatile uint64_t *, uint64_t); -#endif - -/* - * logical AND bits with target - */ -extern void atomic_and_8(volatile uint8_t *, uint8_t); -extern void atomic_and_uchar(volatile uchar_t *, uchar_t); -extern void atomic_and_16(volatile uint16_t *, uint16_t); -extern void atomic_and_ushort(volatile ushort_t *, ushort_t); -extern void atomic_and_32(volatile uint32_t *, uint32_t); -extern void atomic_and_uint(volatile uint_t *, uint_t); -extern void atomic_and_ulong(volatile ulong_t *, ulong_t); -#if defined(_INT64_TYPE) -extern void atomic_and_64(volatile uint64_t *, uint64_t); -#endif - -/* - * As above, but return the new value. Note that these _nv() variants are - * substantially more expensive on some platforms than the no-return-value - * versions above, so don't use them unless you really need to know the - * new value *atomically* (e.g. when decrementing a reference count and - * checking whether it went to zero). - */ - -/* - * Increment target and return new value. - */ -extern uint8_t atomic_inc_8_nv(volatile uint8_t *); -extern uchar_t atomic_inc_uchar_nv(volatile uchar_t *); -extern uint16_t atomic_inc_16_nv(volatile uint16_t *); -extern ushort_t atomic_inc_ushort_nv(volatile ushort_t *); -extern uint32_t atomic_inc_32_nv(volatile uint32_t *); -extern uint_t atomic_inc_uint_nv(volatile uint_t *); -extern ulong_t atomic_inc_ulong_nv(volatile ulong_t *); -#if defined(_INT64_TYPE) -extern uint64_t atomic_inc_64_nv(volatile uint64_t *); -#endif - -/* - * Decrement target and return new value. - */ -extern uint8_t atomic_dec_8_nv(volatile uint8_t *); -extern uchar_t atomic_dec_uchar_nv(volatile uchar_t *); -extern uint16_t atomic_dec_16_nv(volatile uint16_t *); -extern ushort_t atomic_dec_ushort_nv(volatile ushort_t *); -extern uint32_t atomic_dec_32_nv(volatile uint32_t *); -extern uint_t atomic_dec_uint_nv(volatile uint_t *); -extern ulong_t atomic_dec_ulong_nv(volatile ulong_t *); -#if defined(_INT64_TYPE) -extern uint64_t atomic_dec_64_nv(volatile uint64_t *); -#endif - -/* - * Add delta to target - */ -extern uint8_t atomic_add_8_nv(volatile uint8_t *, int8_t); -extern uchar_t atomic_add_char_nv(volatile uchar_t *, signed char); -extern uint16_t atomic_add_16_nv(volatile uint16_t *, int16_t); -extern ushort_t atomic_add_short_nv(volatile ushort_t *, short); -extern uint32_t atomic_add_32_nv(volatile uint32_t *, int32_t); -extern uint_t atomic_add_int_nv(volatile uint_t *, int); -extern void *atomic_add_ptr_nv(volatile void *, ssize_t); -extern ulong_t atomic_add_long_nv(volatile ulong_t *, long); -#if defined(_INT64_TYPE) -extern uint64_t atomic_add_64_nv(volatile uint64_t *, int64_t); -#endif - -/* - * Subtract delta from target - */ -extern uint8_t atomic_sub_8_nv(volatile uint8_t *, int8_t); -extern uchar_t atomic_sub_char_nv(volatile uchar_t *, signed char); -extern uint16_t atomic_sub_16_nv(volatile uint16_t *, int16_t); -extern ushort_t atomic_sub_short_nv(volatile ushort_t *, short); -extern uint32_t atomic_sub_32_nv(volatile uint32_t *, int32_t); -extern uint_t atomic_sub_int_nv(volatile uint_t *, int); -extern void *atomic_sub_ptr_nv(volatile void *, ssize_t); -extern ulong_t atomic_sub_long_nv(volatile ulong_t *, long); -#if defined(_INT64_TYPE) -extern uint64_t atomic_sub_64_nv(volatile uint64_t *, int64_t); -#endif - -/* - * logical OR bits with target and return new value. - */ -extern uint8_t atomic_or_8_nv(volatile uint8_t *, uint8_t); -extern uchar_t atomic_or_uchar_nv(volatile uchar_t *, uchar_t); -extern uint16_t atomic_or_16_nv(volatile uint16_t *, uint16_t); -extern ushort_t atomic_or_ushort_nv(volatile ushort_t *, ushort_t); -extern uint32_t atomic_or_32_nv(volatile uint32_t *, uint32_t); -extern uint_t atomic_or_uint_nv(volatile uint_t *, uint_t); -extern ulong_t atomic_or_ulong_nv(volatile ulong_t *, ulong_t); -#if defined(_INT64_TYPE) -extern uint64_t atomic_or_64_nv(volatile uint64_t *, uint64_t); -#endif - -/* - * logical AND bits with target and return new value. - */ -extern uint8_t atomic_and_8_nv(volatile uint8_t *, uint8_t); -extern uchar_t atomic_and_uchar_nv(volatile uchar_t *, uchar_t); -extern uint16_t atomic_and_16_nv(volatile uint16_t *, uint16_t); -extern ushort_t atomic_and_ushort_nv(volatile ushort_t *, ushort_t); -extern uint32_t atomic_and_32_nv(volatile uint32_t *, uint32_t); -extern uint_t atomic_and_uint_nv(volatile uint_t *, uint_t); -extern ulong_t atomic_and_ulong_nv(volatile ulong_t *, ulong_t); -#if defined(_INT64_TYPE) -extern uint64_t atomic_and_64_nv(volatile uint64_t *, uint64_t); -#endif - -/* - * If *arg1 == arg2, set *arg1 = arg3; return old value - */ -extern uint8_t atomic_cas_8(volatile uint8_t *, uint8_t, uint8_t); -extern uchar_t atomic_cas_uchar(volatile uchar_t *, uchar_t, uchar_t); -extern uint16_t atomic_cas_16(volatile uint16_t *, uint16_t, uint16_t); -extern ushort_t atomic_cas_ushort(volatile ushort_t *, ushort_t, ushort_t); -extern uint32_t atomic_cas_32(volatile uint32_t *, uint32_t, uint32_t); -extern uint_t atomic_cas_uint(volatile uint_t *, uint_t, uint_t); -extern void *atomic_cas_ptr(volatile void *, void *, void *); -extern ulong_t atomic_cas_ulong(volatile ulong_t *, ulong_t, ulong_t); -#if defined(_INT64_TYPE) -extern uint64_t atomic_cas_64(volatile uint64_t *, uint64_t, uint64_t); -#endif - -/* - * Swap target and return old value - */ -extern uint8_t atomic_swap_8(volatile uint8_t *, uint8_t); -extern uchar_t atomic_swap_uchar(volatile uchar_t *, uchar_t); -extern uint16_t atomic_swap_16(volatile uint16_t *, uint16_t); -extern ushort_t atomic_swap_ushort(volatile ushort_t *, ushort_t); -extern uint32_t atomic_swap_32(volatile uint32_t *, uint32_t); -extern uint_t atomic_swap_uint(volatile uint_t *, uint_t); -extern void *atomic_swap_ptr(volatile void *, void *); -extern ulong_t atomic_swap_ulong(volatile ulong_t *, ulong_t); -#if defined(_INT64_TYPE) -extern uint64_t atomic_swap_64(volatile uint64_t *, uint64_t); -#endif - -/* - * Atomically read variable. - */ -#define atomic_load_char(p) (*(volatile uchar_t *)(p)) -#define atomic_load_short(p) (*(volatile ushort_t *)(p)) -#define atomic_load_int(p) (*(volatile uint_t *)(p)) -#define atomic_load_long(p) (*(volatile ulong_t *)(p)) -#define atomic_load_ptr(p) (*(volatile __typeof(*p) *)(p)) -#define atomic_load_8(p) (*(volatile uint8_t *)(p)) -#define atomic_load_16(p) (*(volatile uint16_t *)(p)) -#define atomic_load_32(p) (*(volatile uint32_t *)(p)) -#ifdef _LP64 -#define atomic_load_64(p) (*(volatile uint64_t *)(p)) -#elif defined(_INT64_TYPE) -extern uint64_t atomic_load_64(volatile uint64_t *); -#endif - -/* - * Atomically write variable. - */ -#define atomic_store_char(p, v) \ - (*(volatile uchar_t *)(p) = (uchar_t)(v)) -#define atomic_store_short(p, v) \ - (*(volatile ushort_t *)(p) = (ushort_t)(v)) -#define atomic_store_int(p, v) \ - (*(volatile uint_t *)(p) = (uint_t)(v)) -#define atomic_store_long(p, v) \ - (*(volatile ulong_t *)(p) = (ulong_t)(v)) -#define atomic_store_ptr(p, v) \ - (*(volatile __typeof(*p) *)(p) = (v)) -#define atomic_store_8(p, v) \ - (*(volatile uint8_t *)(p) = (uint8_t)(v)) -#define atomic_store_16(p, v) \ - (*(volatile uint16_t *)(p) = (uint16_t)(v)) -#define atomic_store_32(p, v) \ - (*(volatile uint32_t *)(p) = (uint32_t)(v)) -#ifdef _LP64 -#define atomic_store_64(p, v) \ - (*(volatile uint64_t *)(p) = (uint64_t)(v)) -#elif defined(_INT64_TYPE) -extern void atomic_store_64(volatile uint64_t *, uint64_t); -#endif - -/* - * Perform an exclusive atomic bit set/clear on a target. - * Returns 0 if bit was successfully set/cleared, or -1 - * if the bit was already set/cleared. - */ -extern int atomic_set_long_excl(volatile ulong_t *, uint_t); -extern int atomic_clear_long_excl(volatile ulong_t *, uint_t); - -/* - * Generic memory barrier used during lock entry, placed after the - * memory operation that acquires the lock to guarantee that the lock - * protects its data. No stores from after the memory barrier will - * reach visibility, and no loads from after the barrier will be - * resolved, before the lock acquisition reaches global visibility. - */ -extern void membar_enter(void); - -/* - * Generic memory barrier used during lock exit, placed before the - * memory operation that releases the lock to guarantee that the lock - * protects its data. All loads and stores issued before the barrier - * will be resolved before the subsequent lock update reaches visibility. - */ -extern void membar_exit(void); - -/* - * Make all stores and loads emitted prior to the the barrier complete before - * crossing it, while also making sure stores and loads emitted after the - * barrier only start being executed after crossing it. - */ -extern void membar_sync(void); - -/* - * Arrange that all stores issued before this point in the code reach - * global visibility before any stores that follow; useful in producer - * modules that update a data item, then set a flag that it is available. - * The memory barrier guarantees that the available flag is not visible - * earlier than the updated data, i.e. it imposes store ordering. - */ -extern void membar_producer(void); - -/* - * Arrange that all loads issued before this point in the code are - * completed before any subsequent loads; useful in consumer modules - * that check to see if data is available and read the data. - * The memory barrier guarantees that the data is not sampled until - * after the available flag has been seen, i.e. it imposes load ordering. - */ -extern void membar_consumer(void); -#endif /* __STDC__ */ - -#ifdef __cplusplus -} -#endif - -#endif /* _SYS_ATOMIC_H */ |