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Clarify that timeout == 0 means wait forever

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goldsimon 2008-01-27 11:28:44 +00:00
parent c54777d957
commit 52e8ec03ba
1 changed files with 4 additions and 2 deletions
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6
doc/sys_arch.txt
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@ -58,7 +58,8 @@ The following functions must be implemented by the sys_arch:
Blocks the thread while waiting for the semaphore to be Blocks the thread while waiting for the semaphore to be
signaled. If the "timeout" argument is non-zero, the thread should signaled. If the "timeout" argument is non-zero, the thread should
only be blocked for the specified time (measured in only be blocked for the specified time (measured in
milliseconds). milliseconds). If the "timeout" argument is zero, the thread should be
blocked until the semaphore is signalled.
If the timeout argument is non-zero, the return value is the number of If the timeout argument is non-zero, the return value is the number of
milliseconds spent waiting for the semaphore to be signaled. If the milliseconds spent waiting for the semaphore to be signaled. If the
@ -96,7 +97,8 @@ The following functions must be implemented by the sys_arch:
Blocks the thread until a message arrives in the mailbox, but does Blocks the thread until a message arrives in the mailbox, but does
not block the thread longer than "timeout" milliseconds (similar to not block the thread longer than "timeout" milliseconds (similar to
the sys_arch_sem_wait() function). The "msg" argument is a result the sys_arch_sem_wait() function). If "timeout" is 0, the thread should
be blocked until a message arrives. The "msg" argument is a result
parameter that is set by the function (i.e., by doing "*msg = parameter that is set by the function (i.e., by doing "*msg =
ptr"). The "msg" parameter maybe NULL to indicate that the message ptr"). The "msg" parameter maybe NULL to indicate that the message
should be dropped. should be dropped.