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A bit more explanation for task variables per Eric Norum <eric@cls.usask.ca>.

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Joel Sherrill
2000-05-01 20:08:58 +00:00
parent 26212d3ba7
commit da874def6f
1 changed files with 7 additions and 0 deletions
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doc/user/task.t
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@@ -301,6 +301,13 @@ other tasks' modifications to that variable will not affect the value
seen by the task. This is accomplished by saving and restoring the
variable's value each time a task switch occurs to or from the calling task.
The value seen by other tasks, including those which have not added the
variable to their set and are thus accessing the variable as a common
location shared among tasks, can not be affected by a task once it has
added a variable to its local set. Changes made to the variable by
other tasks will not affect the value seen by a task which has added the
variable to its private set.
This feature can be used when a routine is to be spawned repeatedly as
several independent tasks. Although each task will have its own stack,
and thus separate stack variables, they will all share the same static and