Data Sharing Problem Types
A data sharing problem happens when two tasks access
the same memory location, and the behavior of the program depends on the order
of accesses. This group of topics describes two common data access patterns -
incidental sharing and independent updates - that result in data sharing
problems that are relatively easy to fix. The fixes are described in
Problem Solving
Strategies.
The task's code is called its
static extent
. You need to understand all the data accesses that
might be executed during the execution of the task. You are interested in
accesses to memory locations in the
dynamic extent
of a task, which
includes all functions called from the task's static extent, all functions the
called functions may in turn call, and so on.