T-Kernel Specification (1.B0.02)

4.6. MEMORY POOL MANAGEMENT FUNCTIONS 147
4.6.1 Fixed-size Memory Pool
A fixed-size memory pool is an object used for dynamic management of fixed-size memory blocks.
Functions are provided for creating and deleting a fixed-size memory pool, getting and returning memory
blocks in a fixed-size memory pool, and referencing the status of a fixed-size memory pool. A fixed-size
memory pool is an object identified by an ID number called a fixed-size memory pool ID.
A fixed-size memory pool has a memory space used as the fixed-size memory pool (called a fixedsize
memory pool area or simply memory pool area), and a queue for tasks waiting for memory block
allocation. A task wanting to allocate a memory block from a fixed-size memory pool that lacks sufficient
available memory space goes to WAIT state for fixed-size memory block until memory blocks are returned
to the pool. A task in this state is put in the task queue of the fixed-size memory pool.
[Additional Notes]
When memory blocks of various sizes are needed from fixed-size memory pools, it is necessary to provide
multiple memory pools of different sizes.
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T-Kernel 1.B0.02