critical_section_deinit() function

Pointer to critical_section structure

Enter a critical_section If the spin lock associated with this critical section is in use, then this method will block until it is released.

Release a critical_section

Initialise a critical_section structure assigning a specific spin lock number

Test whether a critical_section has been initialized

Initialise a critical_section structure allowing the system to assign a spin lock number The critical section is initialized ready for use, and will use a (possibly shared) spin lock number assigned by the system. Note that in general it is unlikely that you would be nesting critical sections, however if you do so you *must* use critical_section_init_with_lock_num to ensure that the spin locks used are different.