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52 lines
1 KiB
C
52 lines
1 KiB
C
/* Simple Plugin API */
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/* SPDX-FileCopyrightText: Copyright © 2018 Wim Taymans */
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/* SPDX-License-Identifier: MIT */
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#ifndef SPA_UTILS_RESULT_H
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#define SPA_UTILS_RESULT_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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/**
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* \defgroup spa_result Result handling
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* Asynchronous result utilities
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*/
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/**
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* \addtogroup spa_result
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* \{
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*/
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#include <spa/utils/defs.h>
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#include <spa/utils/list.h>
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#define SPA_ASYNC_BIT (1 << 30)
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#define SPA_ASYNC_SEQ_MASK (SPA_ASYNC_BIT - 1)
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#define SPA_ASYNC_MASK (~SPA_ASYNC_SEQ_MASK)
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#define SPA_RESULT_IS_OK(res) ((res) >= 0)
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#define SPA_RESULT_IS_ERROR(res) ((res) < 0)
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#define SPA_RESULT_IS_ASYNC(res) (((res) & SPA_ASYNC_MASK) == SPA_ASYNC_BIT)
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#define SPA_RESULT_ASYNC_SEQ(res) ((res) & SPA_ASYNC_SEQ_MASK)
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#define SPA_RESULT_RETURN_ASYNC(seq) (SPA_ASYNC_BIT | SPA_RESULT_ASYNC_SEQ(seq))
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#define spa_strerror(err) \
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({ \
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int _err = -(err); \
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if (SPA_RESULT_IS_ASYNC(err)) \
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_err = EINPROGRESS; \
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strerror(_err); \
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})
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/**
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* \}
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*/
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#ifdef __cplusplus
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} /* extern "C" */
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#endif
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#endif /* SPA_UTILS_RESULT_H */
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