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/* Simple Plugin API
*
* Copyright © 2018 Wim Taymans
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
#ifndef SPA_UTILS_RESULT_H
#define SPA_UTILS_RESULT_H
#ifdef __cplusplus
extern "C" {
#endif
/**
* \defgroup spa_result Result handling
* Asynchronous result utilities
*/
/**
* \addtogroup spa_result
* \{
*/
#include <spa/utils/defs.h>
#include <spa/utils/list.h>
#define SPA_ASYNC_BIT (1 << 30)
#define SPA_ASYNC_SEQ_MASK (SPA_ASYNC_BIT - 1)
#define SPA_ASYNC_MASK (~SPA_ASYNC_SEQ_MASK)
#define SPA_RESULT_IS_OK(res) ((res) >= 0)
#define SPA_RESULT_IS_ERROR(res) ((res) < 0)
#define SPA_RESULT_IS_ASYNC(res) (((res) & SPA_ASYNC_MASK) == SPA_ASYNC_BIT)
#define SPA_RESULT_ASYNC_SEQ(res) ((res) & SPA_ASYNC_SEQ_MASK)
#define SPA_RESULT_RETURN_ASYNC(seq) (SPA_ASYNC_BIT | SPA_RESULT_ASYNC_SEQ(seq))
#define spa_strerror(err) \
({ \
int _err = -err; \
if (SPA_RESULT_IS_ASYNC(err)) \
_err = EINPROGRESS; \
strerror(_err); \
})
/**
* \}
*/
#ifdef __cplusplus
} /* extern "C" */
#endif
#endif /* SPA_UTILS_RESULT_H */
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