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Update TODO again

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This commit is contained in:
Gregory Nutt 2016-12-08 13:34:18 -06:00
parent 7d750e4187
commit a692a4cc46
1 changed files with 12 additions and 3 deletions
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15
TODO
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@ -536,9 +536,18 @@ o pthreads (sched/pthreads)
functions that are cancellation points on OpenGroup.org. In functions that are cancellation points on OpenGroup.org. In
general: general:
- Remove asynchronous cancellation. All cancellations must - Two types of cancellation. DEFFERRED and ASYCNCHOOUS:
pend. PTHREAD_CANCEL_DEFERRED: A cancellation request is deferred
- Check if the thread is within cancellation region, then until the thread next calls a function that is a cancellation
point. This is the default cancelability type for all
threads.
PTHREAD_CANCEL_ASYNCHRONOUS: The thread can be canceled at
any time
DEFERRED should be the default but currently only
asyncrhononous is supported by NuttX
- To implement DEFERRED mode:
All cancellations must pend.
Check if the thread is within cancellation region, then
treat like a signal to wake up with -ECANCELED vs -EINTER treat like a signal to wake up with -ECANCELED vs -EINTER
For each function/cancellation point For each function/cancellation point