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92 lines
3.0 KiB
92 lines
3.0 KiB
/* |
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Copyright (c) 2012, Broadcom Europe Ltd |
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All rights reserved. |
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Redistribution and use in source and binary forms, with or without |
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modification, are permitted provided that the following conditions are met: |
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* Redistributions of source code must retain the above copyright |
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notice, this list of conditions and the following disclaimer. |
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* Redistributions in binary form must reproduce the above copyright |
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notice, this list of conditions and the following disclaimer in the |
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documentation and/or other materials provided with the distribution. |
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* Neither the name of the copyright holder nor the |
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names of its contributors may be used to endorse or promote products |
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derived from this software without specific prior written permission. |
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND |
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ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
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WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
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DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY |
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DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
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(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
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LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
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ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
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SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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*/ |
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/*============================================================================= |
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VideoCore OS Abstraction Layer - public header file |
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=============================================================================*/ |
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#ifndef VCOS_ATOMIC_FLAGS_H |
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#define VCOS_ATOMIC_FLAGS_H |
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#ifdef __cplusplus |
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extern "C" { |
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#endif |
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#include "interface/vcos/vcos_types.h" |
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#include "vcos.h" |
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/** |
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* \file vcos_atomic_flags.h |
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* |
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* Defines atomic flags API. |
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* |
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* 32 flags. Atomic "or" and "get and clear" operations |
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*/ |
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/** |
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* Create an atomic flags instance. |
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* |
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* @param atomic_flags Pointer to atomic flags instance, filled in on return |
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* |
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* @return VCOS_SUCCESS if succeeded. |
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*/ |
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VCOS_INLINE_DECL |
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VCOS_STATUS_T vcos_atomic_flags_create(VCOS_ATOMIC_FLAGS_T *atomic_flags); |
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/** |
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* Atomically set the specified flags. |
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* |
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* @param atomic_flags Instance to set flags on |
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* @param flags Mask of flags to set |
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*/ |
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VCOS_INLINE_DECL |
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void vcos_atomic_flags_or(VCOS_ATOMIC_FLAGS_T *atomic_flags, uint32_t flags); |
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/** |
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* Retrieve the current flags and then clear them. The entire operation is |
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* atomic. |
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* |
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* @param atomic_flags Instance to get/clear flags from/on |
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* |
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* @return Mask of flags which were set (and we cleared) |
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*/ |
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VCOS_INLINE_DECL |
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uint32_t vcos_atomic_flags_get_and_clear(VCOS_ATOMIC_FLAGS_T *atomic_flags); |
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/** |
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* Delete an atomic flags instance. |
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* |
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* @param atomic_flags Instance to delete |
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*/ |
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VCOS_INLINE_DECL |
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void vcos_atomic_flags_delete(VCOS_ATOMIC_FLAGS_T *atomic_flags); |
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#ifdef __cplusplus |
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} |
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#endif |
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#endif
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