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api: Remove deprecated Notepads

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Notepads where a feature of RTEMS' tasks that simply functioned in
the same way as POSIX keys or threaded local storage (TLS). They were
introduced well before per task variables, which are also deprecated,
and were barely used in favor of their POSIX alternatives.

In addition to their scarce usage, Notepads took up unnecessary memory.
For each task:

 - 16 32-bit integers were allocated.
 - A total of 64 bytes per task per thread.

This is especially critical in low memory and safety-critical applications.

They are also defined as uint32_t, and therefore are not guaranteed to
hold a pointer.

Lastly, they are not portable solutions for SMP and uniprocessor systems,
like POSIX keys and TLS.

updates #2493.
This commit is contained in:
Aun-Ali Zaidi
2015-12-23 14:44:02 -06:00
committed by Joel Sherrill
parent a48b7c442d
commit d5154d0f6a
128 changed files with 119 additions and 2595 deletions
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testsuites/tools/generic/sorttimes.in
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@@ -66,8 +66,6 @@ lookup rtems_task_mode: obtain current mode
lookup rtems_task_mode: no reschedule
lookup rtems_task_mode: reschedule -- returns to caller
lookup rtems_task_mode: reschedule -- preempts caller
lookup rtems_task_get_note
lookup rtems_task_set_note
lookup rtems_task_wake_after: yield -- returns to caller
lookup rtems_task_wake_after: yields -- preempts caller
lookup rtems_task_wake_when