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core/thread: Add constant value to check custom flags against

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Co-authored-by: benpicco <benpicco@googlemail.com>
This commit is contained in:
chrysn 2022-01-05 19:40:49 +01:00
parent 4bbe0ec42d
commit b923fec952
1 changed files with 13 additions and 0 deletions
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13
core/include/thread_flags.h
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@ -101,6 +101,19 @@ extern "C" {
* @see xtimer_set_timeout_flag * @see xtimer_set_timeout_flag
*/ */
#define THREAD_FLAG_TIMEOUT (1u << 14) #define THREAD_FLAG_TIMEOUT (1u << 14)
/**
* @brief Comprehensive set of all predefined flags
*
* This bit mask is set for all thread flag bits that are predefined in RIOT.
* Flags within this set may be set on a thread by the operating system without
* the thread soliciting them (though not all are; for example, @ref
* THREAD_FLAG_TIMEOUT is not).
*
* When using custom flags, asserting that they are not in this set can help
* avoid conflict with future additions to the predefined flags.
*/
#define THREAD_FLAG_PREDEFINED_MASK (THREAD_FLAG_MSG_WAITING | THREAD_FLAG_TIMEOUT)
/** @} */ /** @} */
/** /**