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OS.h: add a note about B_ABSOLUTE_REAL_TIME_TIMEOUT.

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* B_ABSOLUTE_REAL_TIME_TIMEOUT is used for kernel timers, and
  must be used for absolute timeout values, rather than the
  B_ABSOLUTE_TIMEOUT flag. Discovered whilst implementing
  `pthread_timedjoin_np`.

Change-Id: I37ae057073ff5efeecc00406b132abf51bebbdc2
Reviewed-on: https://review.haiku-os.org/c/haiku/+/5100
Reviewed-by: Fredrik Holmqvist <[email protected]>
Tested-by: Commit checker robot <[email protected]>
This commit is contained in:
Jessica Hamilton
2024-07-13 14:41:34 +00:00
committed by waddlesplash
parent 48c3343960
commit bed49f85a4
1 changed files with 3 additions and 0 deletions
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headers/os/kernel/OS.h
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@@ -37,6 +37,9 @@ enum {
B_TIMEOUT_REAL_TIME_BASE = 0x40, B_TIMEOUT_REAL_TIME_BASE = 0x40,
B_ABSOLUTE_REAL_TIME_TIMEOUT = B_ABSOLUTE_TIMEOUT B_ABSOLUTE_REAL_TIME_TIMEOUT = B_ABSOLUTE_TIMEOUT
| B_TIMEOUT_REAL_TIME_BASE | B_TIMEOUT_REAL_TIME_BASE
/* fails after an absolute timeout
with B_TIMED_OUT based on the
real time clock */
}; };